JP2893959B2 - Head devices such as tape recorders - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head device such as a tape recorder capable of reducing the size of an apparatus main body, and more particularly, to a tape recorder capable of adjusting the height and tilt angle of a magnetic head with a simple structure. And the like.

[0002]

2. Description of the Related Art Optimum adjustment of the height and tilt angle of a magnetic head in a tape recorder or the like is essential for improving the running stability of a magnetic tape.

Therefore, conventionally, the height and tilt angle of a magnetic head have been adjusted at the time of shipment or maintenance when a trouble occurs, but conventionally, the adjustment is performed as follows. Was. That is, the magnetic head mounted and fixed on the support member is set on the head substrate via an appropriate number of adjusting screws and adjusting springs, and the height and tilt of the magnetic head are adjusted by adjusting the screwing and retreating of the appropriate number of adjusting screws. The angle was being adjusted.

[0004]

However, in the above-mentioned adjustment, it is necessary to accurately adjust an appropriate number of adjustment screws, and there is a problem that the adjustment is troublesome. In addition, the adjustment by the above-mentioned means requires a large space in a plane, and there is a problem that the apparatus main body becomes large.

[0005] Therefore, such adjustments are made only in the stationary type, and are basically not performed in the small-sized type. The support of the magnetic head in a small machine is based on the method of bringing the magnetic head to the play position or the stop position with the arm, fixing the magnetic head at the play position, removing the tape pad during fast-forward or rewind, and removing the magnetic tape. The method can be roughly divided into two methods.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and makes it possible to easily and accurately adjust the height and tilt angle of a magnetic head in a head device such as a tape recorder with a simple configuration. It is an object of the present invention to provide a head device such as a tape recorder which can be applied to a small machine.

[0007]

In order to achieve the above object, a first head device such as a tape recorder according to the present invention is provided.

A head device such as a second tape recorder according to the present invention is characterized in that a base shaft supporting portion of an arm-shaped head holding member is provided.
Adjust the tilt angle direction of the magnetic head with respect to the magnetic tape surface.
Constitute the tilt angle adjusting mechanism for settling, the tilt angle adjustment device
The structure is such that the arm-shaped head starts from the base shaft support portion.
The tip of the holding member can be swung in the tilt angle direction,
The magnetic head arranged at the tip of the arm-shaped head holding member is configured to be able to swing a predetermined angle in the tilt angle direction with respect to the magnetic tape surface .

In the head device such as the third tape recorder according to the present invention, the tilt angle adjusting mechanism of the magnetic head in the head device such as the second tape recorder or the like can be tilted to the holding shaft in the tilt angle direction. A spring for urging the base end support portion of the head holding member, which is externally inserted as described above, in the tilt angle direction, and the above-described base for rocking the head holding member in the tilt angle direction against the urging force of the spring. A tilt angle adjustment member movable in the axial direction of the base end support provided with a protruding portion provided on the side opposite to the end end support to contact the outer peripheral surface of the base end support; The contact surface of the surface with the protruding portion has a frusto-conical shape.

[0010]

The present invention has the following functions by the above-described structure.

A head device such as a first tape recorder includes:
Since the base end supporting portion of the head holding member is configured such that the magnetic head installed at least near the distal end thereof can move in the width direction of the magnetic tape, the height of the magnetic head can be adjusted with a simple configuration.

A head device such as a second tape recorder includes:
Since the magnetic head in which the base end support of the head holding member is installed at least near the distal end thereof is configured to be able to swing at a predetermined angle in the tilt angle direction, the tilt angle of the magnetic head can be adjusted with a simple configuration.

A head device such as a third tape recorder includes:
The tilt angle adjusting mechanism of the magnetic head in the head device such as the second tape recorder is externally inserted so that the base end support of the head holding member can swing in the tilt angle direction with respect to the holding shaft, and the head holding member is inserted. A tilt angle adjusting member provided with a projection abutting on an outer peripheral surface formed in a frustoconical shape of the head holding member is biased by a spring in a tilt angle direction and is movable in the axial direction of the base shaft support. With this configuration, the size of the tilt angle adjusting mechanism can be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A head device such as a tape recorder of the present invention will be described below with reference to an embodiment shown in the accompanying drawings.

FIG. 1 is a rear view showing the tape cassette as viewed from the rear, and FIG. 2 is a partially enlarged view of FIG.
Is a magnetic head having the height closest to the holder main body side, (b) is also the one which is farthest from the holder main body side, FIG. 3 is a schematic plan view of a main part, and FIG. 4 is a head holding member. 5 is an enlarged plan view of the base end support, FIG. 5 is a cross-sectional view taken along line XX of FIG. 4, (a) shows the tilt angle adjusting member moved to the holder body side, and (b) shows the same from the holder body. FIG. 6 is a side view showing an example of a tape recorder to which the apparatus of the present invention is applied, and FIG.
7B is a plan view showing the state of the magnetic head and the like in a stopped state when the cassette is detached, FIG. 7B is a view taken in the direction of arrow A in FIG. 7A, and FIG. Alternatively, a plan view showing a recording state, and FIG.

In FIG. 1, reference numeral 1 denotes an upper substrate, which is provided along a storage portion (not shown) for storing a winding portion of the tape cassette 2 on which the magnetic tape 3 is wound, and a magnetic head 4 and a first head. A notch 1a is formed to allow a thicker insertion portion to escape from the storage portion having an opening (not shown) into which the second pinch rollers 5 and 6 are inserted.

Reference numeral 7 denotes a lower substrate, which is formed along the insertion portion, and which is fixed to the upper substrate 1 by supporting columns and a plurality of screws (not shown) so as to have a predetermined gap with the upper substrate 1. Fixed. Reference numerals 8 and 9 denote first and second cassette holder supports, which are fixed to the upper substrate 1 and rotatably support the holder main body 10 by a shaft 8a (9a) as shown in FIG. ing. The holder main body 10 is fixed to both ends by screws (not shown), and has first and second cassette holders 11 and 12 for accommodating the tape cassette 2.

The first and second pinch rollers 5 and 6 are
First and second pinch roller arms 15.1 which are externally inserted so as to be rotatable on first and second pinch roller arm shafts 13 and 14 erected on the holder body 10, respectively.
6 are rotatably provided on the shafts 17 and 18.

Reference numerals 19 and 20 denote first and second pinch roller springs, respectively.
16, the first pinch roller spring 19 has one end 19 a at the protrusion 1 of the first pinch roller arm 15.
5a, the other end 19b is connected to the protrusion 10a of the holder body 10.
And urges the first pinch roller arm 15 clockwise in FIG. On the other hand, the second pinch roller spring 20 has one end 20a on the projection 16a of the second pinch roller arm 16 and the other end 20b on the base support 21a of the head holding member 21 described later.
b, and urges the second pinch roller arm 16 in the counterclockwise direction in FIG.
Are urged in the tilt angle direction (leftward direction in FIG. 5) and the head holding member 21 in the clockwise direction in FIG.

Reference numeral 21 denotes an arm-shaped head holding member having the magnetic head 4 installed near its distal end, and a base shaft support 21a having a holding shaft 22 protruding from the holder body 10 as shown in FIG. Are fitted so that they can swing in the tilt angle directions (A and B in FIG. 5). That is, with respect to the columnar holding shaft 22, one side surface of the base shaft support portion 21 a is formed in a truncated conical cylindrical shape, and the contact between the contact portion 21 f and the outer peripheral surface of the holding shaft 22 is made at the tip And the contact part 21f is a magnetic tape 3
Are located almost on the center line in the width direction of.
Then, on the frustoconical side of the base shaft support 21a,
A tilt angle adjusting member 23 provided with a protruding portion 23a that comes into contact with this surface is provided so as to advance and retreat in the axial direction of the holding shaft 22 by forward and reverse rotation of a tilt angle adjusting screw 24 inserted from the holder main body 10 side. With this screw advance / retreat movement, the base shaft support 21a of the head holding member 21 can be swung at a predetermined angle in the tilt angle direction against or in the same order as the urging force of the second pinch roller spring 20. It is. Reference numeral 25 denotes a spring for preventing an error due to backlash of the screw when the tilt angle adjusting member 23 moves and for stabilizing the position of the tilt angle adjusting member 23.

On the other hand, the tip 21c of the head holding member 21
As shown in FIG. 2A, the screw 26 is externally inserted into the head height adjusting screw 26 inserted from the holder main body 10 side, and the screw 26 moves forward and backward in the axial direction of the screw 26 by the forward and reverse rotation of the screw 26. The contact portion 21 between the base shaft support portion 21 a and the holding shaft 22 is
With the head f as a fulcrum, the head holding member 21 is shown in FIG.
As shown in (b), it swings in the width direction of the magnetic tape 3 so that the height of the magnetic head 4 can be adjusted.

Reference numeral 28 denotes a spring for preventing an error due to screw backlash during movement of the guide member 27 and for stabilizing the position of the guide member 27, and reference numeral 34 denotes a spring for moving the guide member 27 smoothly. It is a guide pin.

Reference numeral 29 denotes a head mounting member provided near the tip of the head holding member 21. Of the first and second tape guides 30 and 31 provided on both sides of the magnetic head 4 mounted on the head mounting member. The lower end surface of the second tape guide 31 abuts on the protrusion 21 d of the head holding member 21, penetrates the distal end side of the head mounting member 29, and fixes the adjustment screw 32 screwed into the head holding member 21. By the reverse rotation, it is possible to swing around the contact portion, and the screw 26
The inclination of the horizontal plane with respect to the running direction of the magnetic tape 3 of the magnetic head 4 generated when the height of the magnetic head 4 is adjusted by the forward / reverse rotation of the magnetic head 4 can be adjusted. Note that 33
Is a spring for adjusting the angle of the magnetic head 4.

Reference numerals 35 and 36 denote first and second capstans, which have first and second flywheels 37 and 38 integrally. In addition, these first and second capstans 3
Although not shown, 5.36 are rotatably mounted on bearings fixed to the lower substrate 7.

Reference numerals 39 and 40 denote first and second pinch roller control shafts, which are fixed to a control rod 41 slidably mounted on a shaft protruding from the lower substrate 7. The first and second pinch rollers 5.6 are pressed against and separated from the first and second capstans 35 and 36 by contacting the control portions 15b and 16b formed on the second pinch roller arms 15 and 16 respectively. 6 and the tape cassette 2 is in the first and second states when the tape cassette 2 is in the state shown in FIGS.
So that the pinch roller arms 15 and 16 do not come into contact with the inner wall 10a of the holder body 10, and the first and second pinch rollers 5.6 are connected to the first and second capstans 35 and 16.
Curved portions 39a and 40a for controlling the control portions 15b and 16b of the first and second pinch roller arms 15 and 16 are formed so as not to be in pressure contact with 36.

Reference numeral 42 denotes an operating shaft of the magnetic head 4, which is fixed to the control rod 41 and installed near the tip of the head holding member 21 according to a positional relationship with an operating portion 21e provided on the head holding member 21. The magnetic head 4 is moved to a reproduction position where it is in deep contact with the magnetic tape 3, a shallow contact or a separation position from the magnetic tape 3 to a stop position and the like.

Reference numeral 43 denotes a relay lever, which is a shaft 4 of the lower substrate 7.
4, one end 43a is engaged with the shaft 45 of the control rod 41, and the other end 43b is engaged with a bent portion of a play bar (not shown).
The switching operation is performed to rotate the first and second reel bases (not shown) in accordance with the reproduction state in the direction of.

The control rod 41 is moved by moving means 46.
Do with. These are performed using a well-known method and will not be described in detail here.

Next, the operation of the head device such as a tape recorder configured as described above will be described.

First, the operation of adjusting the tilt angle will be described. To adjust the tilt angle, the screw 24 shown in FIG. 5 is rotated forward and reverse to move the tilt angle adjusting member 23 forward and backward, and the projecting portion 23 a causes the biasing force of the second pinch roller spring 20 to move due to the forward and backward movement. This is performed by pressing the contact surface of the head holding member 21 with the base shaft support portion 21a against or in order, and swinging the magnetic head 4 installed near the distal end of the head holding member 21 in the tilt angle direction. . That is,
In the present invention, the tilt angle of the magnetic head can be optimally adjusted only by the forward / reverse rotation of the screw 24.

Next, the height adjusting operation will be described. The height of the magnetic head 4 is adjusted by rotating the screw 26 shown in FIG. 2 in the normal and reverse directions to move the tip end 21c of the head holding member 21 forward and backward through the guide member 27. The head holding member 2 has a contact portion 21f between the base shaft support portion 21a and the holding shaft 22 as a fulcrum.
This is done by rocking 1.

That is, in the present invention, the height of the magnetic head can be optimally adjusted only by the forward / reverse rotation of the screw 26.

Next, the operation of correcting the inclination of the horizontal plane with respect to the running direction of the magnetic head 4 generated when the height is adjusted will be described.

The inclination of the magnetic head 4 is adjusted by rotating the adjusting screw 32 shown in FIG. 2 in the normal and reverse directions so that the head mounting member 29 is connected to the lower end surface of the second tape guide 31 and the protrusion 21 d of the head holding member 21. This is performed by swinging with the contact portion as a fulcrum. That is, in the present invention, the tilt adjustment of the magnetic head 4 can be optimally performed only by the forward / reverse rotation of the adjustment screw 32. In addition, since this tilt adjustment is performed using the substantially center position of the second tape guide 31 as a fulcrum,
The height of the tape guide 31 does not substantially change, and the height adjustment may be performed with reference to the second tape guide 31, and the adjustment can be performed with high accuracy and easily.

In the above-described tilt angle / height / tilt adjustment, in the present invention, the tilt angle adjusting member 23, the guide member 27 and the magnetic member are provided to prevent an error caused by screw backlash in order to improve the adjustment accuracy. Springs 25, 28, and 33 are provided to stabilize the position of the head 4.

As described above, according to the present embodiment, the magnetic head 4 installed near the distal end of the arm-shaped head holding member 21 is provided with the screws 24 and 26 by improving the structure of the base end support 21a. In addition, the tilt angle, height, and inclination can be easily and accurately adjusted only by the forward and reverse rotation of the adjusting screw 32, and the configuration can be made extremely small. In addition, since the contact portion 21f of the base shaft support 21 is located near the center line of the magnetic tape 3, the position change of the magnetic head 4 due to the adjustment of the tilt angle can be reduced.

[0037]

According to the present invention as described above, according to the present invention, group
With the end shaft support as the base point, the vicinity of the tip is up and down with respect to the body
An arm-shaped head holding member which is swingably configured countercurrent, on
The arm is connected to a part of the arm-shaped head holding member.
Adjusts the vertical height near the tip of the head holder
Possible height adjusting means and the arm-shaped head holding member
Swing with respect to the arm-shaped head holding member near the tip
A head mounting member installed so as to be capable of being mounted, and the head mounting portion
Magnetic head mounted on a member, and the head mounting member
Tilt adjustment hand that can adjust the tilt of the magnetic head with respect to
And a stage, the earth by the adjustment of the height adjustment mechanism
The tip of the tape-shaped head holding member in the width direction of the magnetic tape.
By moving together with the magnetic head is movable in the width direction of the magnetic tape, the magnetic tape by the slope adjusting means
The inclination of the horizontal plane of the magnetic head with respect to the
Since it is configured to be an integer, a magnetic head for magnetic tape
The height and height of the horizontal plane can be easily adjusted with a simple configuration .

[0038] According to the present invention, the magnetic tape surface of the magnetic head at the base end axis supporting portion of the arm-like head holding member
Constitute the tilt angle adjusting mechanism for adjusting the tilt angle direction, the upper
The tilt angle adjusting mechanism is moved upward with the base shaft support portion as a base point.
The tip of the arm-shaped head holding member is swung in the tilt angle direction.
Movable and arranged at the tip of the arm-shaped head holding member.
Since location is magnetic head is composed as possible a predetermined angle swing in the tilt angle direction with respect to the magnetic tape surface, the magnetic tape
The tilt angle of the magnetic head with respect to the surface can be adjusted with high accuracy with a simple configuration .

Further, according to the present invention, the tilt angle adjusting mechanism of the magnetic head is provided with a base end support portion of the head holding member which is externally fitted to the holding shaft so as to be swingable in the tilt angle direction. And a projection that abuts the outer peripheral surface of the base end support on the side opposite to the base end support to swing the head holding member in the tilt angle direction against the urging force of the spring. A tilt angle adjusting member that is movable in the axial direction of the base shaft supporting portion provided with a portion, and the contact surface with the protruding portion on the outer peripheral surface of the base shaft supporting portion has a frusto-conical shape. In addition, the size of the apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is a rear view showing a state of a tape cassette viewed from a rear direction.

FIGS. 2A and 2B are partially enlarged views of FIG. 1, wherein FIG. 2A shows the magnetic head at the height closest to the holder main body, and FIG. 2B shows the magnetic head at the maximum distance from the holder main body. .

FIG. 3 is a schematic plan view of a main part.

FIG. 4 is an enlarged plan view of a base end support of the head end member.

5 is a cross-sectional view taken along line XX of FIG. 4, in which (a) shows the tilt angle adjusting member moving toward the holder main body, and (b) shows the tilt angle adjusting member separated from the holder main body.

FIGS. 6A and 6B are side views showing an example of a tape recorder to which the apparatus of the present invention is applied, wherein FIG. 6A shows a state when a cassette is mounted, and FIG.

FIG. 7A is a plan view showing the state of the magnetic head and the like in a stopped state, and FIG.

FIG. 8A is a plan view showing a normal rotation reproduction or recording state;
(B) is an arrow view of (b).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 4 Magnetic head 20 2nd pinch roller spring 21 Head holding member 21a Base end support 22 Holding shaft 23 Tilt angle adjusting member 24 Screw 26 Screw 27 Guide member

Claims (3)

(57) [Claims] 1. An area near the distal end with respect to the base axial support is a book.
An arm-shaped head holding member configured to be vertically swingable with respect to the body, and a part of the arm-shaped head holding member;
Up and down near the tip of the arm-shaped head holding member.
Height adjustment means that can adjust the height in the direction, and the above-mentioned arm shape
The arm-shaped head holding near the tip of the head holding member
A head mounting member installed to be swingable with respect to the member,
A magnetic head mounted on the head mounting member;
The inclination of the magnetic head with respect to the head mounting member can be adjusted
And a tilt adjusting means for the said arm-shaped head retention by the adjustment of the height adjustment mechanism
Swinging the tip of the holding member in the width direction of the magnetic tape
The magnetic head is movable in the width direction of the magnetic tape by
And how the magnetic tape runs using the tilt adjustment means.
A head device such as a tape recorder, wherein the inclination of a horizontal plane of a magnetic head with respect to the direction is adjustable . Wherein adjusting the tilt angle direction to the base end axis supporting portion of the arm-like head holding member with respect to the magnetic tape surface of <br/> magnetic head
A tilt angle adjustment mechanism , wherein the tilt angle adjustment mechanism is based on the base shaft support.
Move the tip of the arm-shaped head holding member in the tilt angle direction.
Swingable to the tip of the arm-shaped head holding member.
2. A head device such as a tape recorder according to claim 1, wherein the disposed magnetic head is configured to swing at a predetermined angle in a tilt angle direction with respect to the magnetic tape surface . 3. A spring for urging a tilt angle adjustment mechanism of a magnetic head in a tilt angle direction at a base end support portion of a head holding member which is externally fitted to a holding shaft so as to be swingable in the tilt angle direction. And a projecting portion provided on the side opposite to the base end support to contact the outer peripheral surface of the base end support to swing the head holding member in the tilt angle direction against the urging force of the spring. The tilt angle adjusting member movable in the axial direction of the end shaft support portion, and the contact surface of the base shaft support portion with the protruding portion on the outer peripheral surface is a truncated cone. Head devices such as tape recorders.