JPH0965057A - Image input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently house a cable inside and to miniaturize an image input device by forming an opening part for passing the cable through at the connecting part of the supporting member of a turn supporting mechanism for supporting a camera part. SOLUTION: Concerning the image input device, assuming that a main cable 25 is cut by bending and no image can not be outputted during its use, the cable 25 can be exchanged as follows. Namely, a rear lid 249 is detached, the connector of the cable 25 is pulled out of a main substrate 248, and a chassis 253 is detached perpendicularly downward from a main body base 14. Then, a metal clamp 247 is detached from a balast 245 and the section of the cable 25 exposed from a joint 7 is detached from a pull arm 6 in the direction of arrow 253. The cable 25 fixed on a camera head 2 and a head base 23 is detached, pulled from the section of the cable 25 exposed from the joint 7, and taken out of the arm 5. Thus, the cut cable 25 can be taken out and easily exchanged with the new cable.

Description

Detailed Description of the Invention

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image input apparatus for capturing an image of a subject such as various documents or a person.

[0002]

2. Description of the Related Art A conventional image input device of this type is described below.
This will be described with reference to FIGS. 36 and 37. In FIG. 36,
Reference numeral 301 denotes a lens, 302 denotes a camera head having a CCD element (not shown) and its substrate built therein, and 303 denotes an arm, which is formed of a bellows-shaped or spiral-shaped metal pipe. The arm 303 has a signal cable inserted therein and can be bent into an arbitrary shape. Reference numeral 304 denotes a base which incorporates a main board, which will be described later, and is combined with a chassis that also functions as a weight, 305 denotes a monitor connected via a cable 306, 307 denotes an original, and 30
Reference numeral 8 denotes an operator or a position thereof, and reference numeral 309 denotes an image of the operator as a subject displayed on the monitor 305.

In the conventional image input apparatus having the above-described structure, a typical method of photographing a person will be described. First, the operator turns on a power switch (not shown) provided on the base 304. Then, the subject (person) imaged by the camera head 302 is displayed on the monitor 3
It is projected on 05. In the case of FIG. 36, the camera head 30
2 captures the operator at position 308, so monitor 305
An image 309 of the operator is displayed on the screen. At this time, if necessary, the focus ring provided on the lens 301 is rotated to focus.

[0004] Next, a description will be given of a case of document photography in which the document 307 placed on a desk is imaged. When taking a document image, the operator holds the camera head 302 and moves the camera head 302 to a position 302a indicated by a broken line in FIG.
To move. Since the arm 303 is formed of a bellows-shaped metal pipe that can be bent to an arbitrary shape, the operator can easily move the camera head 302.

The camera head 3 moved to the position 302a
On the other hand, as shown in FIG. 36, the operator mounts the document 307 with the side of the base 304 facing down (upright when viewed from the base 304). The original 30 is placed with such a directivity because the CCD built in the camera head 302 is mounted so that it is vertically correct with respect to the time of photographing a person. , Manuscript 30
This is because the top and bottom of 7 must be as shown in FIG. As a result, the original 307 imaged by the camera head 302 at the position 302a is projected on the monitor 305 in the correct vertical direction, and the document is photographed. At this time,
If necessary, a focus ring provided on the lens 301 is turned to adjust the focus.

Next, an example of the internal structure of the base 304 will be described with reference to FIG. In FIG. 37, the base 30
4 is provided with a cylindrical portion 304a for holding the arm 303, and is fixed to the chassis 315 by a screw (not shown). A main board 316 is screwed to the chassis 315. Connector 32 for main board 316
0, 321, 322, the substrates 317, 318, 319
Are connected, thereby effectively utilizing the internal space of the base 304 to secure a substrate area.

The main board 316 is further provided with a connector 316a for connecting a cable (polyimide flexible board) for transmitting a signal from the camera head 302.
And an image output terminal for connecting to the cable 306 (FIG. 36). The chassis 315 is made of a zinc material and has a substantially rectangular parallelepiped block 315a.
It has. This block 315a is formed on the main board 3
16. Not only does it serve as a bottom plate for mounting the base 304, but also serves as a weight that stably supports the entire apparatus.

[0008]

However, the above-mentioned conventional example has the following problems. That is, first, particularly in the case of photographing a document, since the arm 303 to which the camera head 302a is fixed is composed of a bellows-shaped metal pipe that can be bent into an arbitrary shape, the camera head 302
It was difficult for a to move freely and to be fixed in a fixed position. Further, because of such a configuration, the camera head 302a is easily affected by external vibration and the like, which causes a problem that the image displayed on the monitor 305 is shaken and the image is extremely difficult to see.

In order for the operator to correctly display the image of the original 307 on the screen of the monitor 305, the original 307 is required.
While confirming the image quality, etc., the original 3
It was necessary to change the position of 07 or move the camera head 302a to perform a troublesome operation. When the document 307 is placed in this manner, the camera head 302a
Therefore, it takes a lot of time to perform the alignment, and there is a problem that the operability is extremely poor. In addition, in terms of assemblability, it is necessary to crawl a cable or the like inside a bellows-shaped metal pipe that can be bent into an arbitrary shape, resulting in poor assembly efficiency and high cost.

Further, also in terms of reliability, since no means for restricting the rotation angle of the bent portion is taken, an excessive load is applied to the cable, and as a result, there is a risk of disconnection, which is a problem. It was

Therefore, an object of the present invention is to reliably fix the position of the camera head and to accurately and easily position the camera head with respect to a document to improve the operability at the time of photographing a document. In addition to being excellent in environmental resistance against vibrations, etc., we provide an image input device that not only improves durability by optimally setting the crawling of the cable but also realizes low cost and high reliability. It is to be.

[0012]

An image input apparatus of the present invention includes a camera section for inputting an image, a cable for transmitting information from the camera section, a support section for supporting the camera section, and A base for rotatably supporting the support,
An image input device comprising: a rotation support mechanism provided between the support portion and the base, wherein the rotation support mechanism has a first support having two protrusions arranged to face each other. A second supporting member having a member, a plate-like member having a U-shaped cross section, and having two end portions respectively engaging with the two protrusions and a connecting portion connecting these two end portions; And a torque generating means provided between the first and second support members, and an opening for penetrating the cable is formed in the connecting portion.

Further, in the image input device of the present invention, the supporting portion is a pipe-shaped member, and the cable penetrates through the supporting portion.

Further, in the image input device of the present invention, the first supporting member is provided on the base and the second supporting member is provided on the supporting portion.

Further, in the image input device of the present invention, one of the two protrusions is a member attached to the first support member so as to be positionally adjustable.

Further, in the image input device of the present invention, the torque generating means includes a first sliding member arranged between a protrusion of the first supporting member and an end portion of the second supporting member. Member, a second sliding member arranged to hold the end of the second supporting member by the first sliding member, and a holding force between the first and second sliding members. And a clamping force generating means for generating.

Further, in the image input device of the present invention, the holding force generating means is a tightening means for tightening from the outside of the protrusion and the second sliding member of the first supporting member, and the tightening means. Urging means disposed between the means.

Further, in the image input device of the present invention, the urging means is disposed on the side of the second sliding member.

In the image input device of the present invention, the biasing means is a disc spring, the second sliding member is a sheet-like member, and the biasing means and the second sliding member are A metal plate is arranged between them.

Alternatively, in the rotation support mechanism of the present invention, it is arranged between the first member and the second member, and the first member and the second member are relatively rotatable. A rotation supporting mechanism for supporting, a first supporting member having two projecting portions arranged to face each other, and two plate-shaped members having a U-shaped cross section, which are respectively engaged with the two projecting portions. A second supporting member having an end portion and a connecting portion connecting these two end portions; and a torque generating means provided between the first and second supporting members. The means is
A first sliding member arranged between a protrusion of the first supporting member and an end of the second supporting member;
A second sliding member arranged so as to sandwich the end portion of the second supporting member by the sliding member, and the first and second sliding members.
A clamping force generating means for generating a clamping force between the sliding members,
have.

Further, in the rotation support mechanism of the present invention, the holding force generating means includes a tightening means for tightening from the outside of the protrusion and the second sliding member of the first supporting member, and the tightening means. Urging means disposed between the urging means.

Further, in the rotation support mechanism of the present invention, the urging means is arranged on the side of the second sliding member.

In the rotation support mechanism of the present invention, the urging means is a disc spring, the second sliding member is a sheet-like member, and the urging means and the second sliding member are the same. A metal plate is disposed between the two.

In the rotation support mechanism of the present invention, one of the two protrusions is a member attached to the first support member so as to be positionally adjustable.

[0025]

That is, according to the present invention, a camera section for inputting an image, a cable for transmitting information from the camera section, a support section for supporting the camera section, and the support section are rotatable. An image input device, comprising: a base that supports a plurality of protrusions; and a rotation support mechanism that is provided between the support portion and the base. A first supporting member having a portion, a plate-shaped member having a U-shaped cross section, and two end portions that respectively engage with the two protrusions and a connecting portion that connects these two end portions. Two
And a torque generating means provided between the first and second support members, and an opening for penetrating the cable is formed in the connecting portion.

With this structure, the camera section is stably supported by the base through the support section. In this case, an opening for penetrating the cable is formed in the connecting portion of the second supporting member in the rotation supporting mechanism, so that the cable can be efficiently stored inside, and thereby the device can be downsized. it can. Further, by optimally arranging the cables, it is possible to eliminate stress due to twisting and bending of the cables when operating the camera. As a result, durability can be improved and a highly reliable image input device can be realized.

Further, according to the present invention, the torque generating means includes a first sliding member arranged between the protrusion of the first supporting member and the end of the second supporting member, A sandwiching force is generated between the first and second sliding members and a second sliding member arranged to sandwich the end portion of the second supporting member by the first sliding member. Clamping force generating means. In the operation of the rotation support mechanism, by rotating while generating an appropriate rotation torque,
The camera head can be accurately positioned at a desired position, and a highly reliable rotation support mechanism can be realized.

Further, by constructing one of the torque generating means so that its position can be adjusted, a low-cost rotation supporting mechanism can be realized.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an image input device according to the present invention will be described below with reference to the drawings. FIG.
FIG. 3 is a perspective view that best illustrates the features of the present invention. In FIG. 1, reference numeral 1 denotes a lens, which includes a focus adjustment ring 1a and an aperture adjustment ring 1b, which will be described later, and an alternate long and short dash line in the drawing indicates an optical axis direction of the lens 1. Although not shown, a camera head 2 includes a CCD as an image sensor and an electronic circuit board for processing image signals.

Reference numeral 3 denotes a head base for supporting the camera head 2. The camera head 2 and the head base 3 are provided with arrows A1 and A2 about the axis 4a which is the same as the lens optical axis by the first rotating portion 4. It is rotatably supported in the direction. Reference numeral 5 denotes an arm serving as a first support for supporting the camera head 2, and reference numeral 6 denotes an arm serving as a second support. These arms 5, 6 are each formed of a hollow pipe, and joints 7, 8, 9 and 10 are connected to both ends by press fitting. The joint 7 and the head base 3 are rotatably supported by a hinge 11 as a first hinge part so as to be rotatable in the directions of arrows B1 and B2 around a central axis 11a indicated by a dashed line. The first rotating portion 4 and the hinge 11 form a first joint portion.

The joint 8 and the joint 9 are rotatably supported in the directions of arrows C1 and C2 about a central axis 12a indicated by a chain line by a hinge 12 as a second hinge portion. The hinge 12 and the joint 9
It is covered by the outer case 13. Note that hinge 1
2 constitutes a second joint. Joint 10
The hinge 15 (FIG. 27) as the third hinge portion and the second
By the rotating portion 16 of the above, around the central axes 15a and 16a indicated by the one-dot chain lines, respectively, with respect to the main body base 14 as a base, the directions of the arrows D1 and D2 and the arrows E1 and E are shown.
It is rotatably supported in two directions. Note that a third joint portion is constituted by the second rotating portion 16 and the hinge 15.

Inside the main body base 14, an electronic circuit board, which is not shown in FIG. 1, as a signal processing unit for processing an image signal and controlling input / output, and a weight for improving the stability of the apparatus. It is equipped with a bird. Body base 14
Further includes a power switch 17 and a power LED lens 18 provided on the substrate for guiding the light of the power LED for lighting and displaying the ON / OFF state of the power supply to the outside.
And switches for various functions and an LED lens indicating the operating state of the switches. Reference numeral 19 denotes an automatic gain control switch (hereinafter referred to as an AGC switch) for automatically controlling the brightness of an image, reference numeral 20 denotes a negative / positive inversion switch, reference numeral 21 denotes a microphone mute switch, and reference numeral 22 denotes a white balance switch (hereinafter referred to as a WB switch).
The color tone can be adjusted by the WB volume 23. The switches 19, 21 and 22 are provided on the substrate.
An LED representing the operating state of the LED is turned on, and the light is guided to the outside by the LED lens 24.

Reference numeral 25 denotes a main cable, which connects the substrate inside the camera head 2 and the substrate inside the main body base 14. Main cable 2 as a cable in the present invention
5 is inserted through the inside of the arms 5 and 6. The main cable 25 is partially exposed between the head base 3 and the joint 7 and between the joints 8 and 9.
Although not shown, both ends are clamped at the head base 3 and the main body base 14, respectively. 26
Is a lens cap that protects the lens 1 when the device is not in use.

Further, 27 (FIG. 35) is provided on the bottom surface of the main body base 14 in FIG. 1, and is a rubber foot for preventing the device from slipping and improving stability, 28 is a hinge cover, and a hinge. It rotates with 16 around the central axis 16a. On the hinge cover 28, an index 28a that matches the power LED lens 18 when the camera head 2 is on the center line of the main body base 14 is displayed. Further, 30 is an AC adapter for converting an AC current into a DC current, and 31 and 32 are connection cords for outputting an image signal and a stereo audio signal to an external monitor 33 having a stereo speaker. It is connected to a DC input terminal, an image output terminal, and an audio output terminal provided on the back surface of 14. Reference numeral 34 denotes an external microphone that collects an operator's voice in stereo, and is connected to a microphone input terminal 29 provided on a side surface of the main body base 14. Reference numeral 35 denotes a document as a subject.

FIG. 2 shows an input / output terminal panel provided on the back surface of the main body base 14. In the figure, reference numeral 40 denotes a DC input terminal connected to the aforementioned AC adapter 30, reference numeral 41 denotes an S terminal as the aforementioned image output terminal, and reference numeral 42 denotes a video terminal as the aforementioned image output terminal. Reference numeral 43 denotes the above-mentioned audio output terminal, and two (R) and (L) for stereo use.
Consists of terminals. Reference numeral 44 denotes a switch for switching the shutter speed.

FIG. 3 is a block diagram illustrating an example of signal processing in this embodiment. In the figure, 50 is CP
U and 51 are image signal processing units, 52 is an audio signal processing unit, 5
3 is a timing generator, and 54 is an amplifier.

FIG. 4 shows a side view of the apparatus when photographing a document. Here, the apparatus main body and the document 35 are placed on a placement surface 36 such as a desk. In the figure, the camera head 2 and the arm 5, the arm 5 and the arm 6, and the arm 6 and the mounting surface 36 are substantially perpendicular to each other. In this configuration or posture, the entire original 35 can be photographed in the full screen of the monitor 33. For example, in the present embodiment, the original size at this time is set to A4 size (Japanese Industrial Standard A row No. 4). are doing. The symbol L in the drawing is the distance between the hinges 11 and 12, D is the radius of the body base 14 having a substantially circular shape, W1 is the width of the document 35, W2 is the photographing range of the CCD, d is the document 35 and the body base. 14
Is the interval. The reference numerals in the other drawings are the same as those described above, and thus the description thereof will be omitted.

FIGS. 5, 6 and 7 show preferable examples of the turning angles of the hinges and the turning portion. Figure 5 shows hinge 1
7, 12 is a side view of the rotation range of the first and second rotation parts 15, FIG. 6 is a top view of the second rotation part 16 of the rotation range, and FIG.
[Fig. 4] is a view of the rotation range of the first rotation unit 4 as seen from the lens 1 side. Here, FIG. 7 shows a state in which the camera head 2 is turned horizontally by the hinge 11 in the document image taking mode shown in FIG.

In FIGS. 5 to 7, the angle θ in the drawings represents the turning angle of each hinge and the turning portion with reference to the state shown in FIG. The reference numerals in the other drawings are the same as those described above, and the description is omitted. As will be described later, each hinge has a stopper that regulates the rotation angle, and the maximum rotation angle Ω set by this stopper is specifically as follows in this embodiment. Ω (A1) = 60 °, Ω (A2) = 190 ° Ω (B1) = 140 °, Ω (B2) = 15 ° Ω (C1) = 20 °, Ω (C2) = 90 ° Ω (D1) = 40 °, Ω (D2) = 24 ° Ω (E1) = 180 °, Ω (E2) = 180 ° It should be noted that each hinge and the rotating portion are required to maintain the rotation angle against their own weight. Generates holding torque. The generated holding torque is set to a value such that the camera head 2 does not fall under its own weight regardless of the angle of each hinge.

FIG. 8 is a partially enlarged view of the upper surface of the lens 1. The focus adjusting ring 1a is preferably made of hard rubber, and the index for focusing is formed by a convex character.
Since it is made of rubber, even if the lens 1 collides with the mounting surface during operation, the shock is absorbed, and the CCD and the substrate inside the lens 1 and the camera head 2 are prevented from being damaged. The aperture value is displayed on the aperture adjustment ring 1b by printing or the like.

Further, in both the focus adjustment ring 1a and the aperture adjustment ring 1b, such an index is 180 with respect to the optical axis.
° A pair is provided at opposite positions. That is, when viewed from the back side of the paper surface of FIG. 8, the same index as that shown in FIG. 8 is displayed. Therefore, the operator can see each display in both portrait photography and document photography. Further, the focus adjustment ring 1a and the aperture adjustment ring 1
In both b, the torque required for their rotation is set to be smaller than the rotation torque of the first rotation portion 4,
It is prevented that the camera head 2 is driven to rotate when each ring 1a or 1b is rotated.

FIG. 9 is a top view showing the rotating state of the camera head 2 when a part of the document 35 is enlarged and photographed. Since the reference numerals in the figure are the same as those described above, the description will be omitted.

FIG. 10 is a top view showing the rotating state of the camera head 2 when photographing the original 35 placed at a position displaced from the central axis of the main body base 14. Since the reference numerals in the figure are the same as those described above, the description will be omitted.

FIG. 11 is a side view showing an example of a case where a subject such as a person is photographed in the horizontal direction.

FIG. 12 is a side view showing an example of a case in which the apparatus is transported or stored. Symbol h in the figure
Is the distance between the tip of the lens 1 and the mounting surface 36.

FIG. 13 is a side view showing an example of the form of the apparatus for enlarging and photographing a part of the original 35. The symbol W1 in the figure represents the width of the document 35 as described above, and W3 represents the range for enlarged photographing.

FIG. 14 is a side view showing an example of the form of the apparatus for photographing the entire original document larger than the standard size original document 35. Here, the form represented by the two-dot chain line is the form of the apparatus for photographing an A4-size original 35 as in FIG. Symbols W1 and W2 in the figure represent the width of the document 35 and the photographing range of the CCD, respectively, as described with reference to FIG. 4, and W3 'represents an enlarged photographing range.

FIG. 15 shows how the main cable 25 bends as the hinge 11 rotates. In the figure, the dashed line indicates the shape of the main cable 25 when the sliding treatment is not performed on the main cable 25. The broken line indicates the main cable 25 when the sliding treatment is performed.
Represents the shape of.

FIG. 16 is a schematic top view for explaining the camera head 2. Note that, in FIG. 16, the camera case and the shield case are omitted. In the figure, reference numeral 201 denotes a low-pass filter having a substantially rectangular shape;
Reference numeral 2 denotes a cushioning material for sandwiching the low-pass filter 201 between the CCD 203 and the lens 1, and an elastic body having a substantially katakana "B" shape with a square hole in the center (as a material in this embodiment, Silicon rubber is suitable, but not limited to this material only), 204 is a lens chassis for holding the lens 1, CCD substrate 206, and video substrate 208, and 205 is the CCD substrate 206 touching the lens chassis 204. An insulating sheet for preventing a short circuit (vinyl chloride is suitable as the material in the present embodiment, but it is not limited to this as long as it is an insulator). The CCD 203 is soldered to the CCD substrate 206. The video board 208 includes a connector 209 that engages with the connector 207 on the CCD board 206 and a connector 2 that engages with the connector of the main cable 25.
10, 211 are mounted.

Reference numeral 212 is provided with a round hole 212a for engaging the head shaft 219 and a vertical plate 213, the head chassis screwed to the lens chassis 204 at three bent portions, and 214 is the main cable 25. Is a sheet (vinyl chloride is suitable as the material in the present embodiment, but is not limited to this) for preventing each signal line 25a from touching the edge or the like of the lens chassis 204. Vertical plate 213 with attached double-sided tape
It is fixed to. 215 is a substantially groove 2 of the vertical plate 213.
The mold clamp 216 for fixing each signal line 25a at the position 13a has a stopper 216a (not shown) which will be described later, and a boss 21 of the head shaft 219.
9a and 219b, arrows A1 and A2 around the head axis 219 of the head chassis 212.
This is a head pan plate that regulates the amount of rotation in the direction by a stopper 216a. The head pan plate 216 also serves as a restricting means for the amount of deflection of the wave washer 217.

The wave washer 217 is used for the head chassis 21.
A torque is generated during rotation in the directions of arrows A1 and A2. 218 is a washer for improving the sliding feeling during the rotation (the material and the sliding feeling will be described later), and the head shaft 219 is formed on the head chassis 21.
2 is the center when rotating in the directions of arrows A1 and A2.
Further, reference numeral 220 denotes a tilt chassis, and 221 denotes a metal clamp having a substantially sawtooth shape at one end for fixing the main cable 25.

FIG. 17 is a schematic perspective view for explaining the camera head 2. In the figure, reference numerals 225 and 226 denote camera cases fixed by screws 231 and 227 and 2
28 is a shield case, and 229 and 230 are head base cases fixed with screws 232.

FIG. 18 is a schematic perspective view for explaining the rotation of the head base 3 in the directions of arrows B1 and B2. In FIG. 18, the head base cases 229 and 230 and the main cable 25 that form the head base 3 are omitted. In the figure, 235 is a disc spring for generating a rotational torque, 236 is a metal washer, 237 is a sliding washer, 238 is a tilt axis which serves as a rotation axis of the head base 3, and 239 serves as a rotation axis of the head base 3. ,
It is a tilt shaft that regulates its rotation angle by the groove 7c and the protrusion 239d.

FIG. 19 is a schematic exploded perspective view of the hinge 12 as the second hinge portion. Here, the outer case 1
3 and the main cable 25 are omitted. In the figure, a joint 8 that rotates around a central axis 12a
Is a rib portion 8 formed in an arc shape for restricting rotation.
a, a flat portion on both sides of the central portion, and a hole 8b for inserting a rotation shaft described later, and a sliding washer described later formed near the hole 8b. It has a positioning hole portion 8c. The joint 9 press-fitted into one end of the arm 6 serves as a fixed side base of the hinge 12.

Reference numeral 101 denotes a metal rotating shaft which is fitted into the hole 8b of the joint 8 and is driven to rotate. The rotating shaft 101 is composed of a collar portion, a shaft portion and a screw portion, and the shaft portion Flat portions 101a are formed on both sides. Reference numeral 102 denotes a sliding washer made of a resin material (preferably POM resin) which has excellent wear resistance and can be easily molded into an arbitrary shape, and has a tongue-shaped extension portion 102a formed at its tip end, and It has a protrusion 102b for fitting with the positioning hole 8c of the joint 8 for positioning, and a rotary shaft 102c as a rotary sliding part.

Reference numeral 103 is a sliding sheet made of, for example, an ultra-high molecular weight polyethylene sheet having excellent wear resistance, and 104 is a rotating washer made of a metal plate. Flat portions 104a are formed on both sides of the inner diameter of the rotating washer 104, and the rotating washer 102 is formed between the rotating washer 104 and the flat portion 101a.
The extension portion 102a is sandwiched and held. In this embodiment, the metal rotating washer 10 is used.
Reference numeral 4 is made of a stainless material having a thickness of 1.6 mm.

Reference numeral 105 designates a disc spring which generates a rotational torque by displacing in the axial direction, and 106 designates a metal rotary shaft 1.
A nut made of metal that is screwed with the screw portion 01 and is compressed with a predetermined torque to compress the disc spring 105,
Grooves 106a for rotation are formed at two locations on the outer periphery. Reference numeral 107 denotes a support plate that rotatably supports the joint 8 and the rotating shaft 101 and is fixed to the joint 9 by mounting screws. The support plate 107 has a protrusion 107a, and the protrusion 8107a is brought into contact with a rib 8a provided in a part of the joint 8 in an arc shape to restrict the rotation of the joint 8. . In this embodiment, the support plate 107 is made of the same material as the rotary washer 104, that is, a stainless steel material having a thickness of 1.6 mm. Further, 108 is a set screw for preventing loosening of the metal nut 106.

20 to 23 are views showing the order of assembling the hinge 12. Since the reference numerals in the figure are the same as those described above, the description thereof will be omitted.

FIG. 24 is a main sectional view of the hinge 12. Since the reference numerals in the figure are the same as those described above, the description thereof will be omitted.

FIG. 25 is a schematic side view of the hinge 12. As described above, the rotary washer 104 made of a metal plate
Shows a state in which the extension 102a of the rotary washer 102 is sandwiched between the flat surface 101a of the metal rotary shaft 101 and held.

FIG. 26 is a main side view of the hinge 12. Since the reference numerals in the figure are the same as those described above, the description thereof will be omitted. Here, the nut 106 and the disc spring 105 are omitted. Note that the description using FIGS. 20 to 26 will be described later in detail.

FIG. 27 is a schematic exploded perspective view of the hinge 15 as the third hinge portion. Although the specific configuration of the hinge 15 will be described later, the hinge 15 constitutes the rotation support mechanism of the present invention.

Here, the rotation support mechanism according to the present invention comprises a first support member having two projecting portions arranged to face each other, and a plate-shaped member having a U-shaped cross section. A second supporting member having two ends that engage with each other and a connecting portion that connects these two ends; and a torque generating means provided between the first and second supporting members. Have An opening for penetrating the cable is formed in the connecting portion. In this embodiment, the hinge 15 functions as the rotation support mechanism of the present invention.

In FIG. 27, 111 is the joint 10.
Is a rotating plate which is fixed around the center axis 15a and has a hole 111b provided on a flat surface bent on both sides as a sliding surface. The rotating plate 111 is partially provided with a protrusion 111a.
Of the joint 10 by bringing the tongue piece portion 112a of the base plate 112 and the tongue piece portion 113a of the base plate 113, which will be described later, into contact with each other. Rotation is restricted. In this embodiment, the rotating plate 111 is made of a stainless material having a thickness of 1.6 mm.

Reference numeral 112 denotes a base plate which rotatably supports the rotating plate 111, and is composed of a disk-shaped base flat surface portion and a rotation support flat surface portion rising from the base flat surface portion. As described above, the rotary support flat portion has a pair of tongue pieces 112a bent into a tongue shape, and has a circular protrusion 112b for positioning with respect to a metal support shaft described later. And a positioning hole 112c for positioning with respect to a sliding washer described later. In addition, even in the disc-shaped base flat part,
A protrusion 112d for performing positioning with respect to a base auxiliary plate described later is formed.

Reference numeral 113 denotes a base auxiliary plate which rotatably supports the rotary plate 111, and like the base plate 112, is composed of a base flat surface portion and a rotation support flat surface portion rising from the base flat surface portion. The cutout portion 113d provided in the flat base portion of the base auxiliary plate 113 and the base plate 112
Positioning is performed by the projection 112d of the above and is attached by a screw (not shown). In this case, the cutout 1
13d is preferably formed in a U shape, and by making it movable in the axial direction of the central shaft 15a at the time of attachment, the processing accuracy of the rotating plate 111 can be absorbed during assembly. ing.

The rotation support plane portion of the base auxiliary plate 113 is
As described above, the pair of tongue pieces 1 bent into a tongue shape.
13a, a circular protrusion 113b for positioning with respect to a metal support shaft described later, and a positioning hole 113c for positioning with respect to a sliding washer described later.

Here, the base plate 112 and the base auxiliary plate 1
13 functions as a first support member in the rotation support mechanism of the present invention. Further, the rotating plate 111 functions as a second supporting member in the rotating supporting mechanism of the present invention, and has a substantially U-shaped cross section. The projections 111a provided on both ends of the U-shape of the rotating plate 111 respectively come into contact with the tongue pieces 112a of the base plate 112 and the tongue pieces 113a of the base plate 113 as described above.
The connecting portion that connects the U-shaped ends of the rotating plate 111,
An opening for passing the cable 25 is formed.

Reference numeral 114 is a metal support shaft that pivotally supports the rotating plate, and is composed of a collar portion, a shaft portion, and a screw portion, and flat portions 114a are formed on both sides of the shaft portion. A U-shaped groove 114a is formed in a part of the flange portion, and the U-shaped groove 114a is fitted to the circular protrusions 112b and 113b provided on the base plate 112 and the base auxiliary plate 113, thereby performing positioning. Both are configured not to rotate.

Reference numeral 115 is a sliding washer made of a resin material (preferably POM resin) which has excellent wear resistance and can be easily molded into an arbitrary shape, and has a tongue-shaped extension 115 at its tip.
a is formed, and the positioning hole portion 112c of the base plate 112 and the positioning hole portion 11 of the base auxiliary plate 113 are formed.
Protrusions 1 for fitting and positioning with 3c respectively
It has 15b and the rotating shaft part 115c as a rotating sliding part.

Reference numeral 116 is a sliding sheet made of, for example, an ultra-high molecular weight polyethylene sheet having excellent wear resistance, and 117 is a rotating washer made of a metal plate. Flat portions 117a are formed on both sides of the inner diameter of the rotating washer 117, and the tongue-shaped extension portion 102a of the sliding washer 115 is sandwiched between the flat portion 114a of the metal support shaft 114 described above. It is configured to hold. In this embodiment, the metal rotation washer 117 is made of a stainless steel material having a thickness of 1.6 mm, like the rotation plate 111.

Reference numeral 118 is a disc spring that generates a rotational torque by displacing in the axial direction, and 119 is a metal support shaft 1.
A nut made of metal that is screwed into the screw portion of 14 and is compressed with a predetermined torque to compress the disc spring 118,
Grooves 119a for rotation are formed at two locations on the outer periphery. Reference numeral 120 is a blind lid that is locked by elastic claws provided on the hinge cover 28 and closes the opening of the hinge cover 28. Further, 121 is a set screw for preventing the loosening of the metal nut 119.

Here, the disc spring 118, together with the sliding washer 115, the sliding seat 116, the support shaft 114 and the nut 119, functions as a torque generating means in the rotation supporting mechanism of the present invention. That is, this torque generating means
Base plate 112, base auxiliary plate 113, and rotating plate 111
Of the sliding washer 115 that functions as a first sliding member that is arranged between the sliding washer 115 and the end of the rotating plate 111. A sliding sheet 116 that functions as a member, a support shaft 114 that functions as a clamping force generation unit that generates a clamping force between the sliding washer 115 and the sliding sheet 116, a disc spring 118, and a nut 119. .

28 to 31 are views showing the order of assembling the hinge 15. Since the reference numerals in the figure are the same as those described above, the description thereof will be omitted.

FIG. 32 is a main sectional view of the hinge 15. Since the reference numerals in the figure are the same as those described above, the description thereof will be omitted.

FIG. 33 is a main top view of the hinge 15. Since the reference numerals in the figure are the same as those described above, the description thereof will be omitted.

FIG. 34 shows a side view of the hinge 15 and a sectional view of the second rotating portion 16. Here, the metal nut 119, the disc spring 118, and the set screw 121 are omitted. Here, the structure around the hinge 15 will be described. In the figure, reference numeral 130 denotes a second resin which is made of a resin material having good slidability and which rotates about the central shaft 16a.
The sliding shaft serving as the center of rotation of the rotating unit 16, 131 is a wave washer for generating a torque at the time of rotation, 132 is a washer made of an ultra high molecular weight polyethylene sheet for improving a sliding feeling, and 133 is Equipped with a stopper and positioned by the boss of the sliding shaft 131,
It is a pan plate made of metal whose rotation amount in the 1 and E2 directions is regulated by its stopper. The bread plate 133 also serves as a regulation unit for the amount of bending of the wave washer 131.

FIG. 35 is a schematic sectional view for explaining the inside of the main body base 14. In the figure, reference numeral 245 denotes a ballast having substantially the same shape as the inside of the main body base 14 and fixed to the main body base 14 by screws (not shown). The ballast 245 includes a hole 245a for passing the central main cable 25, and a square hole 245b for a power LED in the front direction, and serves as a weight so that the image input device does not fall. Reference numeral 246 denotes a power LED that lights up when the power is turned on. 247 denotes a metal clamp for fixing the main cable 25 to the ballast 245.
Is a main board provided with a hole (not shown) through which the main cable 25 passes, and 249 is provided with a tripod screw portion 249a and a hole portion 249b into which a rotation preventing pin is inserted. It is a case back that plays a role.

Further, 250 is a negative / positive changeover switch button, 251 is a coil spring for urging the negative / positive changeover switch button 250 vertically upward, and 252 is a groove portion provided in the negative / positive changeover switch button 250. A ring for fitting and preventing the switch button 250 from coming out of the main body base 14 (in the present embodiment, a C-shaped resin sheet material is preferable, but a general E
(A ring or the like may be used.) Reference numeral 253 denotes a chassis on which a main board is attached and a square hole for attaching and detaching a connector is provided at the center. Note that the description using FIGS. 28 to 35 will be described later in detail.

Next, the operation of the image input apparatus configured as described above will be described step by step. First, a basic signal processing flow will be described with reference to FIG. When the power switch 17 is turned on at the beginning, the lens 1 causes C
The light focused on the CD 203 is converted into an electric signal at regular intervals. Then, the amplifier 54 and the image signal processing unit 5
After 1, the image signal is output to the S output terminal 41 or the video output terminal 42 as an image signal, and the image is displayed on the monitor 33 connected via the connection cord 31.

When the microphone 34 is connected to the microphone input terminal 29, the electrical signal from the microphone 34 is output to the audio output terminal 43 in stereo after passing through the audio signal processing section 52. Then, the sound is output as stereo sound from the speaker of the monitor 33 connected via the connection cord 32. Note that a monaural speaker may be used, and there is no problem except that the sense of realism is reduced.

Next, the operation for photographing a document image will be described. In this embodiment, the most commonly used document size, A4 size, is used as the standard document. First, as shown in FIG. 1, a document 35 as a subject is placed on the mounting surface 3
Place on top of 6. At this time, the power LED lens 18 of the main body base 14 is used as a guide, and the center line of the main body base 14 and the center line of the original 35 are aligned with each other. Then, the angle formed by the camera head 2, the arm 5 and the arm 6 is set to about 90 °. In the present embodiment, at this time, the A4 size original document 35 is set to be able to be photographed in the full monitor screen.

Next, the second rotating portion 1 is adjusted so that the index 28a of the hinge cover 28 matches the power LED lens 18.
When 6 is rotated, the camera head 2 is positioned substantially at the center of the original 35. That is, in the image input apparatus according to the present embodiment that does not include the document table, it is difficult to understand where the document 35 should be placed as it is. In the apparatus of the present invention, the power LED lens 18 of the main body base 14 is disposed in the center of the apparatus, and the original 35 is placed in accordance with the power LED lens 18, so that the usability is extremely improved. Since the standard A4 size document 35 can be photographed by such a simple operation, the trouble of moving the document or the camera head while looking at the screen of the monitor 33 is eliminated. By effectively using the display section, such as the power LED lens 18, that indicates the operating state of the device as a mark when the document 35 is placed, the operability at the time of photographing a document is improved and the device design is uncomfortable. Get rid of

Finally, the focus adjusting ring 1a of the lens 1
After rotating the camera head 2 to focus, the camera head 2 is rotated by the first rotation unit 4, whereby the monitor 3 is rotated.
The inclination of the image of the original 35 on the screen 3 is corrected. After the original 35 is set as described above, the photographing is performed.

At this time, the relationship as shown in FIG. 4 is established between the apparatus form and the document size. That is, when the angle formed by the camera head 2 and the arm 5, the angle formed by the arm 5 and the arm 6, and the angle formed by the arm 6 and the mounting surface 36 are approximately 90 °, respectively, the image is projected sideways on the monitor 33. The A4 size original 35 is set so that it will fit on the entire screen. Further, the main body base 14 and the original 3 are set so that the main body base 14 does not enter the screen.
The interval d of 5 is set as follows. d = L-D-W2 / 2> 0 In this embodiment, the standard document size is A4 size, but of course the size is not limited to this.

By the way, as shown in FIG.
Is divided into two parts facing each other on both sides of the main cable 25.
It crosses the central axis 11a. This eliminates the need to slacken and detour the main cable 25 to avoid the hinge 11, thus providing a natural crawling of the main cable 25.

Further, as shown in FIG. 5, when the rotation angle θ (B1) of the hinge 11 is close to 0 °, that is, the camera head 2
And when the arm 5 is almost vertical, the main cable 25
Is bent at a right angle, and a large stress is locally applied to the main cable 25, and there is a risk of disconnection. The shape of the main cable 25 bent in such a manner is shown by a chain line in FIG. So the main cable 2
By winding a resin tube or the like having good slidability around a part of 5, the inner wall of the arm 5 and the main cable 25 become slippery with respect to each other. By subjecting the main cable 25 to the sliding treatment, the main cable 25 can be moved by the arrow F in FIG.
You will slip in the direction. As a result, the main cable 25
Has a large arc shape (having a large radius of curvature) as shown by the broken line in FIG. 15, so that it is possible to avoid local concentration of stress and prevent disconnection. At this time, the hinge 12
Since the main cable 25 is exposed and bent at, the main cable 25 is easily slipped in the F direction.

In order to make the main cable 25 slide well, a tube having good slidability is used in this embodiment, but a lubricant such as grease is used, or it is slid on the inner wall of the arm 5. The same effect can be expected by applying a paint having good dynamic properties, for example, fluorine coating.

Here, the functions of various switches will be described. AGC switch 19 The AGC is turned on when the power switch 17 is turned on. In FIG. 3, the amplifier 54 operates according to a signal from the CPU 50 to appropriately adjust the brightness of the image of the original 35 on the monitor 33. You. However, depending on the surrounding illumination, the gloss of the document surface, and the like, a high-brightness portion, so-called “overexposure” may occur. In such a case, first, the aperture adjustment ring 1b of the lens 1 is opened. Then C
Since the subject has high luminance, the PU 50 sets the gain to the lowest and tries to lower the luminance. Here, when the AGC switch 19 is pressed, the gain is fixed at the lowest value because the AGC switch 19 is a switch for fixing the gain at that time. Since the brightness of the screen of the monitor 33 is reduced as the aperture adjustment ring 1b is reduced, the operator can narrow down the aperture adjustment ring 1b while looking at the screen of the monitor 33 so that appropriate brightness can be obtained. .

In addition, for example, when a person is photographed against a background of a window, the background may be brighter than the subject. In this case, the CPU 50 lowers the gain due to the influence of the background brightness, and the subject is It gets dark. In such a case, the aperture adjustment ring 1b is first fully stopped down.
Then, since the CPU 50 sets the gain to the maximum, if the AGC switch 19 is pressed here, the gain is fixed at the maximum value. Therefore, the operator can open the aperture adjustment ring 1b while watching the screen of the monitor 33 so that an appropriate brightness can be obtained. Usually, AGC is O
Since it is used at N, the LED near the aperture adjustment switch is turned off. When the AGC is OFF, that is, when the gain is fixed, the light is turned on.

WB (white balance) switch 22 When the operator desires to change the tint of the subject on the monitor 33 to the one desired, the WB switch 22 is pressed. Then C
The PU 50 sends a signal to the image signal processing unit 51 to perform white balance on the subject. While the white balance is being taken, the LED near the WB switch 22 blinks, thereby notifying the operator that adjustment is being performed.
When the adjustment is completed, the LED is turned off, so that the operator turns the volume 23 to adjust the color to a desired color.

In this embodiment, turning from the neutral position to the right increases the blue tint, and turning to the left increases the red tint.
That is, when the volume switch 23 is turned, the CPU 50 detects the direction of rotation and the amount of rotation from the neutral position, determines either red or blue based on the direction of rotation, and determines the amount of change in color from the amount of rotation. I do. The CPU 50 sends a signal to the image signal processing unit 51, and the image signal processing unit 51
The color of the image signal from D can be changed.

Shutter changeover switch 44 Since the illumination of an ordinary fluorescent lamp or the like blinks repeatedly at the frequency of the commercial power source, if the blinking frequency of the illumination does not coincide with the shutter speed of the CCD or is not an integral multiple, Flicker, that is, flicker occurs. For example, in the eastern Japan region such as Tokyo, the commercial power supply is 50 Hz, so flicker occurs when the shutter speed is 1/60 sec. Therefore, in this embodiment, the shutter speed is set to 1 /
It can be selected in 60 sec or 1/100 sec, and can be switched and used according to the frequency of the commercial power source. For example, in Tokyo, the shutter speed is 1/1
By switching to 00 sec, flicker can be prevented. At this time, the CPU 50 controls the timing generator 53 according to the state of the shutter changeover switch 44.
To control the CCD shutter speed.

Negative / Positive inversion switch 20 When photographing a negative film such as a still photograph, place the negative film on a light box as a light source,
Press the positive reversing switch 20. Then, the CPU 50 sends a signal to the image signal processing unit 51, and the image signal processing unit 51 performs a predetermined process on the image signal from the CCD, thereby
The negative image can be inverted and output as a normal positive image.

Microphone mute switch 21 For example, when the device of the present invention is used for a video conference, the voice of the operator is collected by the external microphone 34. To temporarily cut off the sound while using the microphone, the operator presses the microphone mute switch 21. Then, the CPU 50
Sends a signal to the audio signal processing unit 52, and the audio processing unit stops the output of the audio signal to the audio output terminal 43. At this time, the LED near the microphone mute switch 21 is turned on, so that the operator can easily recognize that the sound is cut. On the other hand, when it is desired to collect sound again, the sound processing unit 52 outputs to the sound output terminal 43 by pressing the microphone mute switch 21 again. At this time, the LED is turned off, so that the operator can easily recognize that sound is being collected.

Next, the case of photographing a person will be described with reference to FIGS. 7, 8 and 11. In photographing a person, first, the arm 6 is rotated in the D1 direction, and then the arm 5 and the camera head 2 are oriented substantially horizontally. The camera head 2 is separated from the subject by rotating in the D1 direction, and adjustment is performed so that the camera head 2 has an optimum size on the monitor 33. Therefore, the maximum rotation angle Ω (D1) of the hinge 15 in the D1 direction is set to a large value of 40 ° as described above. Next, in FIG. 7, the camera head 2 is rotated 180 ° in the A2 direction.
This is because simply turning the camera head 2 horizontally from the document shooting state in FIG. 1 would cause the vertical direction of the person to be reversed.

In the conventional image input device, since the camera head cannot rotate 180 ° as described in the conventional example, the top and bottom of the CCD of the image pickup unit are set with reference to a person.
When shooting a document, the operator had to turn the camera upside down to shoot. As described above, the operator has difficulty in reading a document or the like as described above. However, in the present embodiment, the camera head 2 can be rotated by 190 °, so that it is easy to use even when photographing a document. Has improved. That is, the erect manuscript and its image can be viewed on the monitor 33 from the operator's side.

By the way, as described above, the index shown in FIG. 8 is displayed at a position opposed to the focus adjusting ring 1a and the diaphragm adjusting ring 1b of the lens 1 by 180 °. Thus, even when the camera head 2 is rotated by 180 °, the operator can adjust the focus and the aperture while viewing the index, as in the case of photographing a document. In the present embodiment, the color of the aperture adjustment ring 1b is changed between the near side and the 180 ° opposite side. This is because the camera head 2 is facing the person's direction or the document's direction without checking the monitor screen, such as when the power is off or not connected to the monitor ( This is so that the image is displayed as an upright image when it is displayed on the monitor). In this embodiment, the operability is improved by the above configuration.

In order to identify the person direction / writing direction, a logo such as “person” is attached to one side of the exterior of the camera head 2 and a logo such as “writing” is attached to the opposite side to make a similar effect. Can also be obtained. For example, as shown in FIG. 1, a display unit M for displaying a logo in the document imaging mode is provided at an appropriate position on the exterior of the camera head 2, and a display unit M 'for displaying a logo in the person imaging mode on the back side of the display unit M. Is provided.

Further, even if the main body base 14 is placed on a tilted surface, the camera head 2 is prevented from tilting the image.
The maximum rotation angle Ω (A2) of the (first rotation unit 4) is set to 190 ° as described above. This allows up to 10
Even when the main body base 14 is placed on a surface inclined to ゜,
The image can be corrected horizontally by rotating only the camera head 2 as appropriate. Further, by setting the angle to 190 °, it is possible to solve a problem in terms of component accuracy or assembly accuracy. This is the inclination error of the CCD imaging surface with respect to the mounting part on the CCD, the inclination error of the CCD mounting with respect to the camera head,
The rotation angle necessary to absorb the accumulated tilt error of the rotation stopper with respect to the camera head may not be 180 ° in some cases. From this point as well, a margin for the rotation angle is required, and The angle is 190 °. Thereafter, the position of the camera head 2 is finely adjusted while looking at the monitor 33, and further the focus is adjusted, the brightness and color are adjusted, or the shutter speed is switched, thereby completing the shooting preparation.

It is needless to say that, in the person photographing mode described above, photographing on a vertical surface such as a drawing attached to a wall surface or a blackboard can be similarly performed.

Next, based on FIGS. 9 and 13, the original 35
The partial enlargement shooting of will be described. When it is desired to enlarge a part of the document 35, the lens 1 may be brought close to the document 35 as shown in FIG. The shooting range at this time is W3,
Since this range is displayed on the monitor 33, enlarged photography is performed. At this time, in this embodiment, the maximum rotation angle Ω of the hinge 15 is set so that the lens 1 reaches the corner of the A4 size document 35.
(D2) is 24 °.

Further, when enlarging the right corner of the original 35 as shown in FIG. 9, the camera head 2 is rotated by the angle Ω (E2) with the second pivot 16 as the pivot. Then, the angle Ω is set with the first turning portion 4 as a turning fulcrum.
It is necessary to rotate only (A1) as shown in the figure. In this way, the two heads are rotated by the camera head 2.
If only is rotated by Ω (E2) around the second rotation unit 16, the corner of the document 35 is projected on the monitor 33 in an oblique manner (not an upright image), which is extremely difficult to see. This is to prevent such an inconvenience, but to obtain an erect image on the monitor 33, although it becomes an image.

Although Ω (A1) is set to 60 ° in the present embodiment, basically, Ω (E2) = Ω (A1) is set at any position in a predetermined rotation range in which the original 35 is projected. This problem can be solved by configuring the device so that the above can be performed. Similarly, when photographing the left corner in FIG. 9, the camera head 2 is rotated in the A2 direction.
As described above, the maximum rotation angle Ω of the camera head 2 in the A2 direction
Since (A2) is set to 190 °, it is possible to take a magnified image even at the corner even for a large document of A4 size or more. Further, since the camera head 2 rotates in the A1 and A2 directions in this way, the entire document 35 can be photographed even in the case of the document 35 placed away from the center line of the main body as shown in FIG.

Next, a case where the apparatus is transported and a case where it is stored will be described with reference to FIG. First, place the arm 6 on the mounting surface 3
6 is arranged almost perpendicularly. Next, camera head 2
Is rotated in the B1 direction by the hinge 11 until it is regulated by a rotation stopper of the hinge 11 described later. Next, the arm 5 is moved by the hinge 12 in the C2 direction,
Until it is regulated by the rotation stopper. At this time, the stopper of the hinge 12 is set so that the arms 5 and 6 are substantially parallel.

By folding the columns and the like through the joints in this way, the entire apparatus becomes a compact form as shown in the drawing, and when the apparatus is not used, it can be placed on the desk without disturbing. There is an advantage. Further, when transporting the apparatus, the arm 5 and the arm 6 can be easily carried by grasping them together. In this manner, the maximum rotation angle Ω of the hinge 12 is set so that the device can be compact.
(C2) is set to 90 °.

In other words, in the device of the present invention, as shown in FIG. 12, the arms 5 and 6 are made substantially parallel to each other so that they can be folded, thereby greatly improving the transportability and the storability. When folded in this manner, the main cable 25 is exposed and bent at the hinge 12 as shown in FIG. Therefore, even if the form of FIG. 12 is adopted, no unreasonable force is applied to the main cable 25, and there is no fear of breakage. In addition, the maximum rotation angle Ω (B1) of the hinge 11 in the B1 direction such that a space of h is formed between the tip of the lens 1 and the mounting surface 36 in such a compact form.
Is set to 140 °. Since such an interval h is generated, there is no risk of the lens 1 hitting the mounting surface and being damaged when folded as shown in FIG. 12 or placed on the mounting surface after being conveyed in the state of FIG.

As described above, the standard original 35 is A4 size in the present embodiment, but a case of photographing an entire original larger than this is described with reference to FIG. The form shown by the chain double-dashed line in FIG. 14 corresponds to the form shown in FIG. From the shape of the two-dot chain line described above, the arm 6 is moved in the D2 direction by the hinge 15 to
Is rotated in the C1 direction by the hinge 12, and the camera head 2 is rotated in the B2 direction by the hinge 11. As a result, since the position of the camera head 2 is raised, the photographing range is expanded from W3 to W3 ', and a larger original can be photographed as a whole. In order to take such a form, the maximum rotation angle Ω (B2) of the hinge 11 in the B2 direction is 1
05 °, the maximum rotation angle Ω (C
1) is set to 20 °.

Next, the main cable 25 connected to the camera head 2 will be described. In FIG. 16, the main cable 25 is a 19-core composite cable including, for example, three 75Ω coaxial wires. A shield material (a single braid winding of tin-plated annealed copper wire is preferable in the present embodiment, but is not limited to this) is provided inside the outer skin of the main cable 25, and the shield material covers the outer skin. The conductive copper foil tape 25b is folded back and wound. The metal clamp 221 includes a substantially arcuate portion 221a and a substantially sawtooth portion 221b. The substantially arcuate portion 221a presses the tape 25b portion of the main cable 25, and the substantially sawtooth portion 221b causes the outer surface of the main cable 25 to be covered. The main cable 25 is securely fixed to the tilt chassis 220 by biting into. By fixing in this manner, it is possible to prevent the main cable 25 from being pulled in the direction of the arrow 223 and coming out of the camera head 2 to break the internal cable.

Furthermore, the main cable 25 is a tape 25
After being released from the restraint of b, the signal lines 25a are separated, and after passing through the head shaft 219, they are fixed by the mold clamp 215. This is to make the main cable 25 correspond when rotating in the directions of the arrows A1 and A2 with the head shaft 219 of the head chassis 212 as the rotation axis. That is, the video board 208 also rotates with this rotation, so that the main cable 25 fitted with the connector of the video board 208 is similarly twisted. In this case, arrow A
Although the main cable 25 is rotated in two directions by 190 °, the outer skin of the main cable 25 with the outer skin twisted only up to 60 ° in the circumferential direction against the twist. Therefore, as described above, the outer skin is removed to separate the signal lines 25a, and the signal lines 25a are bound by the mold clamp 215, so that the rotation can be smoothly performed by 190 °.

Each signal line 25a fixed by the mold clamp 215 is then inverted by the vertical plate 213 and fitted with the connectors 210 and 211 on the video board 208. Each signal line 25a that is not covered with the shield material becomes a noise source for the CCD 203 as it is, but the vertical plate 213 shields noise from each signal line 25a. On the other hand, each signal line 25a itself is susceptible to noise because there is no shield material. Therefore, in this embodiment, the following measures are taken.

That is, the tape 25 of the main cable 25
A GND line 25c is soldered to b, and the GND line 25c is connected to GND of the video board 208 by a connector. The GND of the video board 208 is grounded to the lens chassis 204, and as shown in FIG.
7, 228 are screwed to the lens chassis 204. Therefore, the shield cases 227 and 228 are grounded to the shield material of the main cable 25 via the video board 208, the GND line 25c, and the tape 25b. As a result, each signal line 25a is shielded from noise by the shield cases 227 and 228.

Next, the camera head 2 is moved to the arrows A1 and A2.
The case of rotating in the direction will be described. As shown in FIG. 16, in the camera head 2, the lens chassis 204 is screwed to the head chassis 212 to form its skeleton.
With respect to this skeleton, as shown in FIG. 17, the shield case 22
7 and 228 and the camera cases 225 and 226 to form the camera head 2.
The rotation of the camera head 2 is realized by the rotation in the directions of the arrows A1 and A2 at twelve.

Therefore, in FIG. 16, the head chassis 212 is rotatably supported by the head shaft 219 in the round hole 212a, and is urged by the urging force of the wave washer 217 through the washer 218 in the direction of the arrow 223. There is. In the present embodiment, the washer 218 is formed of an ultra-high molecular weight polyethylene sheet having a small friction coefficient and excellent wear resistance. When the head chassis 212 rotates, the washer 218 rotates together with the head chassis 212, while the washer 218 and the wave washer 217 slide. This is because when the frictional force between the head pan plate 216 and the wave washer 217 is a, the frictional force between the wave washer 217 and the washer 218 is b, and the frictional force between the washer 218 and the head chassis 212 is c. This is because the relationship between the magnitudes of the frictional forces is a> b, c> b, and the frictional force of the washer 218 and the wave washer 217 is the smallest.

The washer 218 and the wave washer 21 are also included.
In the sliding that occurs between 7, since both materials are a resin sheet and a metal, a smoother sliding feeling can be obtained than in the case of sliding performed between metals. And the wave washer 217
When the head chassis 212 rotates in the directions of the arrows A1 and A2 due to the urging force of the camera head 2, the rotation torque T is generated, and even if the operator stops the rotation of the camera head 2 at an arbitrary position, the camera head 2 loses its own weight. It is possible to prevent accidental rotation due to inertia. Further, the rotation torque T is
Are larger than the rotational torques of the focus adjustment ring 1a and the aperture adjustment ring 1b provided in the camera head 2, so that the camera head 2 itself does not rotate even if the operator turns these rings.

As described above, the camera head 2 has the arrow A
Although it rotates in the 1 and A2 directions, when the head chassis 212 rotates in the direction of the arrow A1 by about 60 ° in FIG.
The rotation thereof is restricted by contacting the sixteen stoppers 216a. Similarly, in the direction of the arrow A2, when the head chassis 212 is rotated by approximately 190 °, the claw portion 212b of the head chassis 212 contacts the stopper 216a (not shown) of the head pan plate 216, and the rotation is restricted.

Next, the joint 7 including the camera head 2
Rotate in the directions of arrows B1 and B2. In FIG. 18, the tilt shaft 238 is an arc-shaped protrusion 23.
8b, 238c are positioned in the arc-shaped holes 220a, 220b of the tilt chassis 220, and the screws 240
Is fixed to the tilt chassis 220. Shaft 23
8a engages with the hole 7a of the joint 7, the washer 237, the metal washer 236, and the disc spring 235, and serves as a rotation axis in the directions of arrows B1 and B2. The washer 237, the metal washer 236, and the disc spring 235
20 and the joint 7. Further, the disc spring 235 generates an urging force in the direction of the arrow 242, and urges the washer 237 to the joint 7 via the metal washer 236. The metal washer 236 has a function of transmitting the urging force of the disc spring 235 to the entire surface of the washer 237. Assuming that there is no metal washer 236,
The disc spring 235 bites into the washer 237, and the required amount of bending of the disc spring 235 cannot be obtained. As a result, correct biasing force is not generated.

Therefore, when the metal washer 236 obtains an appropriate biasing force of the disc spring 235, a predetermined rotational torque is generated when the tilt chassis 220 rotates in the directions of arrows B1 and B2. With this rotational torque, it is possible to hold the camera head 2 and the joint 7 at a position intended by the operator. In the present embodiment, the washer 237 is formed of an ultra-high molecular weight polyethylene sheet having a small coefficient of friction and excellent wear resistance. Therefore, when the tilt chassis 220 rotates, the disc spring 235, the metal washer 236, and the washer 237 rotate together with the tilt chassis 220, and the washer 237 and the joint 7 slide. This is washer 23
This is because the frictional force between the joint 7 and the joint 7 is the smallest as compared with other parts.

Regarding the sliding feeling of the washer 237 and the joint 7, since the materials of the both are the resin sheet and the metal, a smoother sliding feeling can be obtained than in the case of sliding between metals. The tilt shaft 239 is provided with holes 220c and 220 of the tilt chassis 220 by cylindrical protrusions 239a and 239b and an arc-shaped protrusion 239c.
d, 220 e and fixed to the tilt chassis 220 by screws 241. The shaft portion 239c is engaged with the hole 7b of the joint 7, and serves as a rotation axis in the directions of arrows B1 and B2. In addition, the protrusion 239 of the tilt shaft 239
d is engaged with the arc-shaped long hole 7c of the joint 7, and when the tilt chassis 220 is rotated by 50 ° in the direction of arrow B1 and 105 ° in the direction of arrow B2 with respect to the horizontal axis, the protrusion 239d is The rotation is restricted by contacting the end face of the elongated hole 7c. Thus, the joint 7 including the camera head 2 can rotate in the directions of the arrows B1 and B2.

Next, the assembly order of the hinge 12 will be described with reference to FIGS. As shown in FIG. 20, first, the sliding washer 102 is attached in alignment with the hole 8b of the joint 8 (at this time, the protrusion 102b of the sliding washer 102 is inserted into the positioning hole 8c of the joint 8 so that the sliding washer 102 is slid. The movable washer 102 and the joint 8 are positioned relative to each other and are in a state in which they cannot rotate relative to each other. After that, the rotary shaft portion 1 of the sliding washer 102 is inserted into the hole portion of the support plate 107 which is fixed to the joint 9 in advance by mounting screws or the like.
Insert 02c.

Next, as shown in FIG. 21, the sliding sheet 103 and the rotating washer 104 are attached to the protruding extension portion 102a.
Is inserted, and is further inserted into a hole penetrating the metal rotation shaft 101. This constitutes the bearing portion on one side.

Next, as shown in FIG. 22, the sliding washer 102 on the opposite side is similarly attached to the joint 8 (at this time, the shaft portion of the metal rotary shaft 101 is necessarily the hole portion of the sliding washer 102. Will be inserted into). Support plate 1
By mounting 07 with a mounting screw or the like, the bearing portion on the opposite side is formed.

Then, as shown in FIG. 23, the sliding sheet 1
03, the rotary washer 104, and the disc spring 105 are attached to the protruding shaft portion of the metal rotary shaft 101, and the metal nut 106 is tightened with a predetermined torque to generate an axial force in the rotary shaft thrust direction. Further, by tightening the set screw 108 at one end of the central portion of the metal nut 106, the frictional force between the female screw portion of the metal nut 106 and the male screw portion of the metal rotating shaft 101 is always stabilized. And the metal nut 106 is prevented from loosening.

The mechanism of torque generation of the hinge 12 will be described with reference to FIG. A groove 106a for rotation, which is accessed by a driver tool or the like (a crab eye tool in this embodiment), at two locations on the outer periphery of the metal nut 106.
There is. When the nut 106 is rotated clockwise by the crab tool, the disc spring 105 gradually bends. Then, the joint 8 is pressed from both sides by the repulsion of the disc spring 105. Here, the rotating washer 104 is a metal plate having a rigidity (in this embodiment, a stainless steel material having a thickness of 1.6 mm), but this prevents the rotating washer 104 from being bent by the repulsive force generated by the disc spring 105. The frictional force is further increased by preventing it and by dispersing the force of the disc spring 105 over the entire uniform circumferential surface.

Friction force is generated in the joint 8 at two points as described below, and a holding torque is generated. First, as described above, the sliding washer 102 is formed by the protrusion 102b and the positioning hole 8c of the joint 8 so that the joint 8
Since the support plate 107 and the sliding washer 102 are slidably fixed to each other, a frictional force is generated at the contact surface between them. Next, since the rotary washer 104 is fitted to the metal rotary shaft 101 by the flat surface portion 104a and rotates integrally, the sliding sheet 103 sandwiched between them.
Generates a frictional force by sliding on either the support plate 107 or the rotating washer 104.

At this time, since the sliding sheet 103 is freely rotatable and the support plate 107 and the rotating washer 104 are made of the same material (stainless steel), they have substantially the same friction coefficient. Therefore, the frictional forces generated on both sides of the sliding sheet 103 are almost equal. As a result, depending on a slight difference in roughness of the sliding surface and environmental conditions such as temperature and humidity, the sliding surface may be between the support plate 107 and the sliding washer 102, or between the sliding sheet 103 and the rotating washer 104. However, in any case, the holding torque generated at that time is not significantly affected.

The holding torque thus generated depends on the pressing force in the axial direction. The pressing force depends on the amount of compression of the disc spring 105. Therefore, in order to obtain a desired holding torque, the rotation amount of the nut 106 may be adjusted. Further, in this embodiment, the disc spring 105 is incorporated on the right side in FIG. 24 to generate a holding torque. It is also possible to incorporate a second disc spring between the flange portion of the rotary shaft 101 on the left side in FIG. 24 and the rotary washer 104. By doing so, the spring constant at the hinge portion decreases, and it becomes much easier to perform torque adjustment by tightening rotation of the metal nut 106, and fine adjustment becomes possible.

The sliding washer 102 has an L-shaped cross section, and the rotary shaft portion 102c is inserted between the circular hole of the support plate 107 and the rotary shaft 101. This is the support plate 107
This is to prevent the rotating shaft 101 from directly touching and sliding to wear the metals. Also, the metal nut 10
When the 6 is rotated, the rotating means is not limited to the crab-eye tool, and a dedicated jig or tool using a hexagon wrench or a driver may be used. Similarly, the set screw has a configuration (not shown) that is tightened by a hexagonal wrench in this embodiment, but a structure that is fastened by using a general screwdriver or a dedicated jig may be used.

Next, the loosening prevention of the hinge 12 will be described with reference to FIGS. 24 and 25. In this case, the structure on the right side of the center line is particularly relevant to the drawing in FIG. 24, and therefore the following description is limited to the right side of the center line.

In the flat surface portion 101a formed on the shaft portion of the metal rotary shaft 101 and the flat surface portions 104a formed on both inner surfaces of the central portion of the rotary washer 104, the width of the flat surface portion 101a is larger than that of the rotary shaft 101. The width of the plane portion of the dynamic washer 104 is larger. The tongue-shaped extension 102a of the slide washer 102 is sandwiched in the gap formed by the shaft and the hole, in order to prevent the nut 106 from loosening and rotating as described below.

When the joint 8 rotates, the rotating shaft 101
As a result, the rotating washer 104 is driven to rotate. Here, assuming that the rotating washer 104 has a structure that does not follow the joint 8, the rotating washer 104 is stationary, and the metal nut 106 has a frictional force to make the nut 106 stand still through the disc spring 105 and the rotating shaft. A frictional force that rotates the nut 106 acts through the threaded portion 101. If the frictional force that keeps the nut 106 stationary is larger than the other, the nut 106 and the rotating shaft 101 are relatively easy to rotate,
As the rotation is repeated, the nut 106 may rotate in a direction in which it gradually loosens, and as a result, the holding torque may decrease.

When the rotation of the metal nut 106 and the rotation washer 104 is started via the disc spring 105,
Since the disc spring 105 is made of metal, the sliding surface may be easily damaged depending on the mutual surface precision, and the friction coefficient may gradually increase, resulting in an increase in torque change. Therefore, it is configured to forcibly avoid sliding between metal surfaces.

However, in general, the rotating washer 104
In the method in which the hole is formed with a flat surface and the flat surface of the rotary shaft 101 is fitted to prevent the rotary washer 104 from rotating, the hole and the shaft to be fitted with each other are limited in terms of machining accuracy. There is a slight gap. Due to the fitting backlash generated from the slight gap, a frictional force that tries to make the metal nut 106 stand still is transmitted, and as a result, the nut 106 rotates in the loosening direction as described above. In view of this, in this embodiment, utilizing the fact that the sliding washer 102 is a resin molded product as described above, a part thereof is extended to form the extension portion 102a. Then, by adopting a structure in which the rotary washer 104 is press-fitted,
Such fitting backlash is eliminated to prevent loose rotation of the metal nut 106 (FIG. 25).

Next, the rotation angle of the hinge 12 will be described with reference to FIG. The above-mentioned joint 8 has an arc-shaped rib portion 8a, and constitutes a stopper that restricts the rotation angle by coming into contact with the protruding portion 17a of the support plate 17. That is, when the joint 8 rotates, the rib portion 8a and the protruding portion 17a come into contact with each other, and the joint 8 does not rotate any more.
The rotation angle at this time is the maximum rotation angle Ω (C1) and Ω.
(C2). It goes without saying that a desired maximum rotation angle can be obtained by appropriately changing the position of the rib portion 8a or the protruding portion 17a.

Next, the hinge 15 will be described with reference to FIGS.
The assembling order of will be described. As shown in FIG. 28, first, the support shaft 114 is inserted from the inside into a hole provided in the rotation support flat surface portion of the base plate 112. And the sliding washer 11
The joint 10 is inserted into the hole of the flat portion bent on both sides of the rotary plate 111 to which the joint 10 is fixed. At this time, as described above, the support shaft 114 and the base plate 112 have the U-shaped groove 114 formed in a part of the flange portion of the support shaft 114.
b and the circular protrusion 11 provided on the base plate 112.
Positioning is performed by fitting with 2b, and both are configured not to rotate. Similarly to the hinge 12, the sliding washer 115 is configured so that the sliding washer 115 and the base plate 112 are positioned relative to each other by inserting the protrusion 115b into the hole 112c of the base plate 112 and do not rotate. ing.

Next, as shown in FIG. 29, the sliding washer 1
15 protruding extensions 115a (support shaft 114 in the figure)
The sliding sheet 116, the fixed washer 117, and the disc spring 118 are fitted into the rear side of the support shaft 114, and the metal nut 119 is attached to the threaded portion of the support shaft 114. In this case, a nut made of metal is tightened with a predetermined torque, and a predetermined holding torque is generated by the bearing portion on one side. afterwards,
The set screw 121 is tightened on one end of the metal nut 119 to prevent loosening. This constitutes the bearing portion on one side.

Further, as shown in FIG. 30, another supporting shaft 114 is inserted into the hole provided in the rotation supporting flat surface portion of the base auxiliary plate 113, and the base auxiliary plate 113 is positioned through the sliding washer 115. Projection 112d and notch 1 for
13d is used to roughly position and attach. In addition,
The longitudinal dimension (axial direction) of the support shaft 114 is such that the base plate 113 and the sliding washer 11 in the state where the bearing portion on one side is configured.
In order to be able to assemble 5, the length is set to be approximately 1/2 of the width of the plane portion bent on both sides of the rotating plate 111.

Also, the support shaft 114 and the base auxiliary plate 113
Similarly to the bearing portion on the opposite side, the U-shaped groove 114b provided in a part of the collar portion of the support shaft 114 and the base auxiliary plate 113
Positioning is performed by fitting the circular protruding portion 113b provided on the above to the both, and both are configured not to rotate. In addition, with respect to the sliding washer 115, the protrusion 115 b has the hole 113 of the base auxiliary plate 113.
By being inserted into c, the sliding washer 115 and the base auxiliary plate 113 are positioned relative to each other and are in a state in which they cannot rotate.

Next, as shown in FIG. 31, the sliding washer 1
15 protruding extensions 115a (support shaft 114 in the figure)
The sliding sheet 116, the fixed washer 117, and the disc spring 118 are fitted to the back side of the support shaft 114, and the metal nut 119 is attached to the threaded portion of the support shaft 114. At this time, the metal nut 119 is tightened with a predetermined torque to generate a predetermined holding torque. After that, tighten the set screw 121 on one end of the metal nut 119,
Prevent loosening. This is because by tightening the set screw 121 on one end of the metal nut 119, a large frictional force between the female screw portion of the metal nut 119 and the male screw portion of the metal support shaft 114 is constantly generated. This prevents the metal nut 119 from loosening.

Thus, the bearings on both sides are configured, and the torque of the hinge is determined by the combined torque of both. Furthermore,
In this state, the base plate 112 and the base auxiliary plate 113 are fixed to each other with screws (not shown) to ensure the fixed fixation. As described above, in this embodiment, the cutout portion 113d has a U-shaped cutout shape, and when mounted, the central shaft 15a
Move in the direction (arrow direction in the figure). As a result, the processing accuracy of the rotary plate 111 can be absorbed during assembly (see FIG. 33).

In other words, the bearing torque on one side is set first, and then the bearing portion on the other side is assembled and attached, thereby making the structure independent of the bending accuracy of the rotary plate 111. As a result, the machining accuracy of the rotary plate 111 is relaxed, so that a low-priced hinge portion can be provided.

Further, as a function of the hinge portion of the arm base, a rotation function in both a tilt direction (a rotation direction having the central axis 15a as a rotation axis) and a pan direction (a rotation direction having the center axis 16a as a rotation axis) are provided. Need to have. Hinge 1
As described above, the structure in which the bearing 5 has the bearing portions at both ends thereof can provide an appropriate space in the substantially central portion of the rotating plate 111, which facilitates the crawling of the cable. As a result, it is possible to improve the durability due to the rotation of the cable and reduce the size of the hinge portion, and it is possible to provide a highly reliable device.

Next, the mechanism of torque generation of the hinge 15 will be described with reference to FIG. A groove 119a for rotation to allow a driver tool or the like (in this embodiment, a claw-eye tool) to access two locations on the outer periphery of the metal nut 119.
(See FIG. 27)). When the metal nut 119 is rotated clockwise, the disc spring 118 gradually bends.
Then, the revolving plate 111 is pressed from both sides by the repulsion of the disc spring 118. Here, the fixed washer 117 is a rigid metal plate (a stainless steel plate having a thickness of 1.6 mm in the present embodiment), which prevents the fixed washer 117 from bending due to the repulsive force generated by the disc spring 118, Moreover, the frictional force is further increased by dispersing the force of the disc spring 118 over the entire uniform circumferential surface.

As described below, the rotary plate 111 generates a frictional force at two places to generate a holding torque. First, since the sliding washer 115 is non-rotatably fixed to the base plate 112 as described above, the rotating plate 111 and the sliding washer 115 slide, and a frictional force is generated at the contact surface between them. To do.

Next, since the sliding sheet 116 is freely rotatable and the rotating plate 111 and the fixed washer 117 are made of the same material (stainless steel), they have substantially the same friction coefficient. Therefore, the frictional forces generated on both sides of the sliding sheet 116 are almost equal. As a result, depending on a slight difference in roughness of the sliding surface and environmental conditions such as temperature and humidity, the sliding surface may be between the rotating plate 111 and the sliding sheet 116 or between the sliding sheet 116 and the fixed washer 117. However, in any case, the holding torque generated at that time is not significantly affected.

The holding torque thus generated depends on the pressing force in the axial direction. The pressing force depends on the amount of compression of the disc spring 118. Therefore, to obtain the desired holding torque,
The rotation amount of the nut 119 may be adjusted. The sliding washer 115 has an L-shaped cross section,
c enters between the circular hole of the rotating plate 111 and the metal support shaft 114. This is the rotating plate 111 and the support shaft 11.
This is to prevent the metals 4 from being worn by sliding while 4 is in direct contact.

Although the above description is for the bearing portion on one side, the same description will be made for the other bearing portion.

Next, the loosening prevention of the hinge 15 will be described with reference to FIG. As described above, the flat portion 114a formed on the shaft portion of the support shaft 114 and the fixed washer 117
The flat surface 117a formed on both inner surfaces of the central portion of the
In the reference), the width of the fixed washer 117 is larger than that of the metal support shaft 114. The sliding washer 1 is inserted in the gap formed by the shaft and the hole.
The tongue-shaped extension 115a of 15 is sandwiched in order to prevent loose rotation of the nut 119 as described below.

When the rotating plate 111 rotates, the frictional force is transmitted to the fixed washer 117 through the sliding sheet 116,
This is to be rotated. Here the fixed washer 117
Is rotated freely, a frictional force is transmitted to the nut 119 through the disc spring 118. A frictional force is also generated in the nut 119 and the threaded portion of the support shaft 114. However, if the frictional force transmitted from the rotating plate 111 is slightly larger than this frictional force, the nut 119 will move as the rotation is repeated. It rotates in a direction that loosens little by little. As a result, the holding torque may decrease. Therefore, it is configured to forcibly avoid sliding between metal surfaces.

However, in general, the fixed washer 117
In the method in which the hole is formed with a flat surface and the flat surface of the support shaft 114 is fitted to prevent the fixed washer 117 from rotating, the hole and the shaft to be fitted with each other are not a little from the limit of machining accuracy. There will be a gap in. Due to the fitting backlash generated from the slight gap, a frictional force that tries to stop the nut 119 made of metal is transmitted, resulting in the problem that the nut 119 rotates in the loosening direction as described above. obtain. In view of this, in this embodiment, the sliding washer 115 is a resin molded product as described above, a part of the sliding washer 115 is extended and the fixed washer 117 is lightly press-fitted, so that the fitting backlash is eliminated and the metal is eliminated. Made nut 1
It is designed to prevent the loose rotation of 19.

If a torque drop occurs,
There is a removable blind cover 120, and after removing the blind cover 120, the holding torque can be increased again by tightening the nut 119 with a crab tool. Further, when the nut 119 is rotated, the rotating means is not limited to the claw-eye tool, and a dedicated jig or tool using a hexagonal wrench or a driver may be used.

Next, the rotation angle of the hinge 15 will be described with reference to FIG. Projection 1 of rotating plate 111 described above
11a, the tongue-shaped piece 112a of the base plate 112 and the tongue-shaped piece 113a of the base auxiliary plate 113 constitute a stopper for restricting the rotation angle. That is, when the rotating plate 111 rotates, the protruding portion 111a and the tongue pieces 112a and 113a come into contact with each other. The rotation angles at this time are the maximum rotation angles Ω (D1) and Ω (D2). Needless to say, a desired maximum rotation angle can be obtained by appropriately changing the position of the protruding portion 111a or the tongue-shaped pieces 112a and 113a.

Next, the rotation of the rotating portion 16 will be described with reference to FIG. The base plate 112 of the aforementioned hinge 15
Is fixed to the round hole of the main body base 14 so as to be freely rotatable around the shaft 16a, and the pan plate 1 is sandwiched between the washer 131 and the wave washer 132 from below.
33 is fixed. Here, when the wave washer 132 bends, the sliding shaft 130 is pressed against the main body base 14 by a repulsive force to generate a frictional force, thereby generating a torque at the time of rotation. Note that, as described in the description of the camera head 2, the washer 131 is used due to the frictional force.
Since the wave washer 132 slides, a smooth sliding feeling can be obtained.

By the way, the bottom surface of the base plate 112 of the hinge 15 is circular. Although not shown, a part thereof projects in the plane direction. The main body base 14 also has a part of the sliding surface protruding from the sliding shaft 130 (14a), and the base plate 1
When the pivot 4 rotates, the above-mentioned protrusions come into contact with each other and serve as a stopper for restricting the pivot. In the present embodiment, the positions of the both protruding portions are arranged so that the rotation angle of the hinge 16 is 180 °, but of course, the present invention is not limited to this.

There is a through hole at the center of the support shaft 130, and the main cable 25 passing through the inside of the arm 6 passes through this through hole. Further, since the hinge 15 also has a space at the center and does not obstruct the path of the main cable 25 as described above, a structure in which an excessive force is not applied to the cable at the hinge 15 and the second rotating portion 16 is provided. It has become.

Next, the inside of the main body base 14 will be described with reference to FIG. In FIG. 35, the main cable 25 includes an arm 6, a joint 10 and a ballast 245.
The hole 245a is inserted into the ballast 245 and is fixed to the ballast 245 by the metal clamp 247. Metal clamp 247
Includes a substantially arcuate portion 247a and a substantially sawtooth portion 247b. The substantially arcuate portion 247a holds down the conductive copper foil tape 25d portion of the main cable 25.
The substantially serrated portion 247b bites into the outer cover of the main cable 25 so that the main cable 25 does not come off even if it is pulled in the direction of arrow 253.

Further, the main cable 25 is the tape 25
The signal line 25e is released from the restraint of d and passes through a hole (not shown) of the main board 248,
It is connected to a connector provided on the solder surface of 48. On the solder surface of the main board 248, other adjustment connectors (not shown) are provided. Then, in a final form in which everything except the back cover 249 is attached, it is possible to make final electrical adjustments such as signal synchronization and image tint by using this adjustment connector.

By separating the main cable 25 from the tape 25d to each signal line 25e, it is possible to fold it back in a narrow space as shown in FIG. In this case, each signal line 25e is not particularly shielded, and is susceptible to noise as it is. Therefore, in the present embodiment, the foot portion 245c of the ballast 245 is screwed to the chassis 253. The chassis 253 is connected to the power supply ground via the main board 248,
The ballast 245 is made of a zinc material so as to function as a weight. Therefore, the ballast 245 is connected to the power ground via the screw.

As a result, each signal line 25e is shielded by the ballast 245 and the chassis 253. This is the same for the main board 248, that is, the main board 2
48 is shielded from noise. Also, the tape 25
Since d secures the shield material inside the outer skin of the main cable 25, the shield material of the main cable 25 is connected to the ballast 245 via the tape 25d, and is grounded to the power ground. Thereby, the main cable 2
5 as a whole is shielded, making the cable strong against noise. The ballast 245 serves not only as a weight but also as a shield material as described above and has a silver surface. Therefore, in the square hole 245b, the ballast itself serves as a reflection surface to amplify the light amount of the power LED 246 so that the power LED lens 18 can emit bright light with good visibility.

The main body base 14 has an AGC switch 1
9, a negative / positive changeover switch 20, a microphone mute switch 21, and a WB switch 22 are provided. Here, the negative / positive changeover switch 20 will be described. The negative / positive changeover switch 20 includes a negative / positive changeover switch button 250, a coil spring 251, and a ring 252. The operator is negative /
When the positive switch button 250 is pressed, the main board 2
48, the tact switch 248a is turned on, and the negative /
Positive switching can be performed.

The image input device also includes a hole 24 for receiving a tripod screw 249a of the back cover 249 and a rotation preventing pin.
9b allows it to be mounted on a camera or video camera tripod. This not only on the desk,
The tripod makes it possible to install the camera at a place desired by the operator.

Further, in the present image input apparatus, if the main cable 25 is broken due to bending during use and an image cannot be output, the main cable 25 can be replaced as follows. That is, first, the back cover 249
And connect the connector of the main cable 25 to the main board 2
48, and the chassis 253 is removed vertically downward from the main body base 14. Then, the metal clamp 247 is removed from the ballast 245, and the metal clamp 247 is pulled out from the portion of the main cable 25 exposed from the joint 7 in the direction of arrow 253 from the arm 6. Next, the main cable 25 fixed to the camera head 2 and the head base 3 is detached, and the main cable 25 is taken out from the portion of the main cable 25 exposed from the joint 7 from the pull arm 5. Thereby, the broken main cable 25 can be taken out and can be easily replaced with a new cable.

The specific numerical values such as the angle in the above embodiment can be appropriately changed within the scope of the present invention, and the optimum one can be selected according to the actual use. In addition, in particular, the structure around the joints connecting the columns and the cable routing structure or method in the above embodiment can be effectively applied to, for example, electronic devices or electronic devices that can adopt this kind of structure. It is. As an example, in a lighting device such as a desk lamp, or a medical device, a distal end member is set at a desired position via a support with respect to a proximal end member, and both members are connected by a cable. Can be.

[0164]

As described above, according to the present invention, a camera section for inputting an image, a cable for transmitting information from the camera section, a support section for supporting the camera section, and a support section for rotating the support section. In an image input device including a movably supporting base and a rotation support mechanism provided between the support and the base, the camera unit is stably supported on the base via the rotation support mechanism. Supported. In this case, an opening for penetrating the cable is formed in the connecting portion of the supporting member in the rotation support mechanism, so that the cable can be efficiently housed inside, and thus the device can be downsized. Further, by optimally arranging the cables, it is possible to eliminate stress due to twisting and bending of the cables when operating the camera. As a result, durability can be improved and a highly reliable image input device can be realized. Also,
In the operation of the rotation support mechanism of the present invention, by rotating while generating an appropriate rotation torque, the camera head can be accurately positioned at a desired position, and a highly reliable rotation support mechanism is realized. can do. Furthermore, by arranging one of the torque generating means so that the position can be adjusted,
A low-cost rotation support mechanism can be realized.

[Brief description of drawings]

FIG. 1 is an external perspective view of an image input device that best illustrates an embodiment of the present invention.

FIG. 2 is a schematic rear view for explaining the rear panel according to the embodiment of the present invention.

FIG. 3 is a block diagram for explaining signal transfer in the embodiment of the present invention.

FIG. 4 is a schematic side view for explaining a document image capturing mode according to the embodiment of the present invention.

FIG. 5 is a schematic side view for explaining rotation of the hinge according to the embodiment of the present invention.

FIG. 6 is a schematic top view for explaining rotation of the hinge according to the embodiment of the present invention.

FIG. 7 is a schematic front view for explaining rotation of the hinge according to the embodiment of the present invention.

FIG. 8 is a schematic top view for explaining the lens unit according to the embodiment of the present invention.

FIG. 9 is a schematic top view for explaining photographing of a document peripheral portion according to the embodiment of the present invention.

FIG. 10 is a schematic top view for explaining misalignment document portion photographing according to the embodiment of the present invention.

FIG. 11 is a schematic side view for explaining person shooting according to the embodiment of the present invention.

FIG. 12 is a schematic side view for explaining a transportation mode according to the embodiment of the present invention.

FIG. 13 is a schematic side view for explaining the partially enlarged image capturing according to the embodiment of the present invention.

FIG. 14 is a schematic side view for explaining shooting of a large original according to the embodiment of the invention.

FIG. 15 is a schematic side view for explaining the cable bending of the embodiment of the present invention.

FIG. 16 is a schematic top view for explaining the camera head unit according to the embodiment of the present invention.

FIG. 17 is a schematic perspective view for explaining the camera head unit according to the embodiment of the present invention.

FIG. 18 is a schematic perspective view illustrating the rotation of the head base according to the embodiment of the invention.

FIG. 19 is a schematic exploded perspective view of a second hinge portion according to the embodiment of the present invention.

FIG. 20 is a view showing an assembling sequence of the second hinge part according to the embodiment of the present invention.

FIG. 21 is a view showing the assembling order of the second hinge part according to the embodiment of the present invention.

FIG. 22 is a view showing the assembling order of the second hinge part according to the embodiment of the present invention.

FIG. 23 is a view showing the assembling order of the second hinge part according to the embodiment of the present invention.

FIG. 24 is a main cross-sectional view of a second hinge part according to the embodiment of the present invention.

FIG. 25 is a schematic side view of a second hinge portion according to the embodiment of the present invention.

FIG. 26 is a main side view of a second hinge portion according to the embodiment of the present invention.

FIG. 27 is a schematic exploded perspective view of a third hinge portion as a rotation support mechanism in the embodiment of the present invention.

FIG. 28 is a view showing the assembling order of the third hinge part in the embodiment of the present invention.

FIG. 29 is a view showing the assembling order of the third hinge part in the embodiment of the present invention.

FIG. 30 is a view showing the assembling order of the third hinge part in the embodiment of the present invention.

FIG. 31 is a view showing the assembling order of the third hinge part in the embodiment of the present invention.

FIG. 32 is a main cross-sectional view of a third hinge part in the embodiment of the present invention.

FIG. 33 is a main top view of the third hinge part according to the embodiment of the present invention.

FIG. 34 is a partially cutaway side view of a third hinge portion according to the embodiment of the present invention.

FIG. 35 is a schematic cross-sectional view for explaining the inside of the main body base in the embodiment of the present invention.

FIG. 36 is a schematic perspective view showing a conventional example.

FIG. 37 is a schematic sectional view showing a conventional example.

[Explanation of symbols]

1 lens, 2 camera head, 3 head base,
4,16 rotating part, 5,6 support, 7,8,9,10 joint, 11,12,15 hinge, 14 body base, 18 LED lens, 25 main cable, 28
Hinge cover, 30 AC adapter, 33 monitor,
34 external microphone, 35 originals, 36 original mounting surface, 5
0 CPU, 51 image signal processing unit, 52 audio signal processing unit, 53 timing generator, 54 amplifier, 1
01 rotating shaft, 102 sliding washer, 103 sliding sheet, 104 rotating washer, 105 disc spring, 106
Metal nut, 107 support plate, 111 rotating plate, 11
2 base plate, 113 base auxiliary plate, 114 support shaft,
115 sliding washer, 116 sliding sheet, 119
Metal nut, 201 low-pass filter, 202 cushioning material, 203CCD, 204 lens chassis, 205
Insulation sheet, 208 Video board, 210, 211
Connector, 212 head chassis, 215 mold clamp, 216 head pan plate, 217 wave washer, 220 tilt chassis, 221 metal clamp,
229, 230 Head base case, 235 Disc spring, 236 Metal washer, 238, 239 Tilt axis.

Claims (13)

[Claims] 1. A camera section for inputting an image, a cable for transmitting information from the camera section, a support section for supporting the camera section, and a base for rotatably supporting the support section. An image input device comprising: a rotation support mechanism provided between the support portion and the base, wherein the rotation support mechanism has a first protrusion having two protrusions arranged to face each other. A supporting member; and a second supporting member which is a plate-shaped member having a U-shaped cross section, and which has two end portions that respectively engage with the two protrusions and a connecting portion that connects these two end portions, An image inputting device, comprising: a torque generating unit provided between the first and second supporting members, and an opening for penetrating the cable in the connecting portion. apparatus. 2. The support portion is a pipe-shaped member,
The image input device according to claim 1, wherein the cable penetrates through the support portion. 3. The image input device according to claim 2, wherein the first supporting member is provided on the base, and the second supporting member is provided on the supporting portion. 4. The image input device according to claim 1, wherein one of the two protrusions is a member attached to the first support member so as to be positionally adjustable. 5. The torque generating means includes a first sliding member arranged between a protrusion of the first supporting member and an end of the second supporting member, and the first sliding member. A second sliding member arranged so as to sandwich the end portion of the second supporting member by a moving member; and a sandwiching force generating means for generating a sandwiching force between the first and second sliding members. The image input device according to claim 1, further comprising: 6. The clamping force generating means includes a tightening means for tightening from the outside of the protrusion and the second sliding member of the first supporting member, and an attaching member arranged between the tightening means. The image input device according to claim 5, further comprising a biasing unit. 7. The image input device according to claim 6, wherein the urging means is disposed on the side of the second sliding member. 8. The biasing means is a disc spring, and the second
The image input device according to claim 7, wherein the sliding member is a sheet-shaped member, and a metal plate is disposed between the biasing means and the second sliding member. 9. A rotation support mechanism which is disposed between a first member and a second member and which supports the first member and the second member so as to be relatively rotatable, A first supporting member having two projecting portions arranged to face each other, a plate-shaped member having a U-shaped cross section, and two end portions engaging with the two projecting portions and connecting these two end portions. A second supporting member having a connecting portion for connecting to the first supporting member, and a torque generating unit provided between the first and second supporting members, wherein the torque generating unit is configured such that the first supporting member is A first sliding member arranged between the projecting portion and an end portion of the second supporting member, and arranged so as to sandwich the end portion of the second supporting member by the first sliding member. And a clamping force generating means for generating a clamping force between the first and second sliding members. Rotation support mechanism, characterized in that it is. 10. The clamping force generating means includes a tightening means for tightening from the outside of the protrusion and the second sliding member of the first supporting member, and an attaching member arranged between the tightening means. The rotation support mechanism according to claim 9, further comprising a biasing means. 11. The rotation support mechanism according to claim 10, wherein the urging means is disposed on the second sliding member side. 12. The biasing means is a disc spring, the second sliding member is a sheet-shaped member, and a metal plate is disposed between the biasing means and the second sliding member. The rotation support mechanism according to claim 11, wherein: 13. The rotation support mechanism according to claim 9, wherein one of the two protrusions is a member attached to the first support member so as to be positionally adjustable.