JPH03187088A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To securely absorb vibration at the time of operating by interposing at least two buffer means in an operating panel having an operating means for performing a mode changeover in a front face of the device main body. CONSTITUTION:One buffer means 37 is constituted of an oil damper 34 and a pinion 35 and a gear 36 on the operating panel 30, and the panel 30 is smoothly inclined forward at 90 deg. by the means 37. Then, the other buffer means 42 is constituted of a compression coil spring 40 and a projecting pin 41 close to the other side of a recessed part 30b formed on the back of the base end of the panel 30. The pin 41 of this means 42 is brought into contact with the front side of a base 31 when the panel 30 is inclined. By this method, the panel 30 is smoothly inclined forward at 90 deg., while vibration of the panel 30 is securely absorbed at the time of operating the operating means 33.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording/reproducing apparatus such as a VTR (video tape recorder) having a so-called jog/shuttle operation means.

[Summary of the Invention] The present invention provides an operation panel having an operation means for switching modes, etc. on the front side of the device main body, for example, about 90 degrees in the front and back direction.
In a recording and reproducing device rotatably supported so that the operation means can be seen and hidden by standing up and tilting within a range of 100°, at least two buffer means are interposed between the front surface of the device main body and the operation panel. This makes it possible to absorb vibrations when rotating the operation panel forward and folding it down, as well as absorb vibrations when operating the operation means of the operation panel.

[Prior Art] For example, a VTR (video tape recorder) is known that has operating means such as a jog dial and a shuttle ring on the front of the device main body. There are two types of operating means that are directly attached to the front of the device body, and a type that is freely rotatable so that the operating means can be seen and hidden by standing up and tilting within a range of about 90 degrees in the front and back direction on the front of the device main body. There is a type that is attached to a supported operation panel, and the latter type is popular due to its ease of use. These devices that have an operation panel with rotatably attached rotation dials and shuttle rings (operation means) are equipped with a buffering means such as an oil damper interposed between the operation panel and the front of the device body, so that when the device is tilted, it suddenly This prevents you from falling forward.

[Problems to be Solved by the Invention] However, in a conventional VTR having an operation panel provided with one buffer means, the operation panel is quite heavy, so it is difficult to stand up the operation panel in order to operate the operation means. When tilting forward 90 degrees from the state, the operation panel has a drawback that it bounces upward due to the recoil and tends to vibrate.

SUMMARY OF THE INVENTION Therefore, the present invention provides a recording/reproducing device that can reliably absorb vibrations of the operation panel when the operation panel is tilted forward.

[Means for Solving the Problems] In a recording and reproducing device, an operation panel having operation means for switching modes, etc. is rotatably supported on the front side of the device body so that the operation means can be seen and hidden. At least two buffer means are interposed between the front surface of the control panel and the operation panel.

[Function] At least two buffering means are interposed between the front of the device main body and the operation panel, so vibrations generated when the operation panel is rotated forward and brought down are reliably absorbed, and the operation panel is not affected by its weight or other factors. It does not jump up and falls down smoothly. Furthermore, even when operating the operating means of the operating panel, vibrations of the operating panel are reliably absorbed by the at least two buffering means.

[Example] Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, I is an M loading type VTR (recording/reproducing device). The device main body 2 of this VTR 1 is generally composed of a plane rectangular frame 10 made of synthetic resin, an outer casing 3 that covers the frame IO, and the like. A cassette insertion opening 4 for inserting and removing a tape cassette 70 is provided at the upper center of the front surface 2a of the main body 2 of the apparatus, and a digital display section 5 and the like are provided at the lower part thereof. Furthermore, recesses 2b and 2c are formed on both sides of the front surface 2a of the device main body 2, respectively.

The inner surface of one of the recesses 2b is used for rewinding and reproducing.

Operation buttons 6 for stopping, etc., are provided, and these operation buttons 6 can be shown or hidden on the operation panel 30. Also,
On the inner surface of the other four parts 2c, there is a power button 7. A cassette eject button 8, terminals 9 such as a headphone input terminal, a line power terminal, etc. are provided, and these power button 7 and the like can be seen and hidden by a lid 80.

As shown in FIG. 2, a rectangular cylindrical mounting frame portion 2 is integrally molded to protrude from the substantially middle flame near the front of the frame IO. Recesses 11a and fib are provided at the front right side, left front side, and rear center of the mounting frame 11 in the figure.

11c are integrally molded. This 6-concave 11a
= 11c and the rubber elastic members 12 are respectively fitted.

As shown in FIG. 3, the lower edge 15a of the chassis 15 is placed on the upper surface of each rubber elastic member 12 via a spacer I3. These rubber elastic members 12 and spacers 13
A buffering means (damper mechanism) 14 is configured.

At a position near the recess 11c on the chassis 15, a rotary head drum I7 is rotatably supported via a drum mounting base (mounting member) +6, and the chassis 1
The inclined guide 1 pulls out the tape 71 in the tape cassette 70 around the rotary head drum 17 and loads it through a pair of slide bases (mounting members) 1818 etc. that slide around the rotary head drum 17 on the tape cassette 70.
9. A vertical guide 20 is provided respectively. A pair of reel stands 21.21 for mounting the tape cassette 70 are disposed on the front side of the chassis I5, and a cavistan 22.21 is provided on the right side of the chassis 15 in the figure. Pinch rollers 23 and the like are provided. In addition, the second
In FIG. 3, reference numeral 25 is a stopper member for stopping wire rods and the like.

The operation panel 30 has a base 3 whose protruding base end 30a is fixed to the lower part of the recess 2b of the front surface 2a of the device main body 2! It is rotatably supported via a shaft 32 so that it can stand up and tilt within a range of about 90° in the front-rear direction. Further, an operating means 3 consisting of a jog dial 33a and a shuttle ring 33b is provided approximately at the center of the inner surface of the operating panel 30.
3 is rotatably supported. This jog dial 33
A is slow playback from frame-by-frame to match the speed.

It allows you to freely move the image up to standard playback, and you can manipulate the image forward or backward depending on the direction you turn it.

Further, the shuttle ring 33b can change the playback speed according to the angle at which it is rotated. Then, by tilting the operation panel 30 forward about the shaft 32 by 90 degrees as shown in the dashed line in FIG. etc., and by raising the operation panel 30 as shown by the solid line in FIG. 8, the operation buttons 6, operation means 33, etc. can be hidden. There is.

As shown in FIGS. 4 to 7, a pinion 35 is attached to one side of the base 31 and rotates under constant load from an oil damper 34. Furthermore, a fan-shaped gear 36 that meshes with the pinion 35 is integrally formed and protrudes from a position of the operation panel 30 facing the pinion 35 . These oil damper 34, pinion 35, and gear 36 constitute one buffering means (damper mechanism) 37, and the buffering means 37 allows the operation panel 30 to be tilted forward by 90° smoothly. There is.

In addition, as shown in Fig. 4.5.8, the operation panel 3
On the other side of the concave portion 30b formed on the back side of the base end of 0, an inverted T-shaped protrusion pin 41 is protruded by a compression coil spring 40. The compression coil spring 40 and the protruding pin 41 provide the other buffering means (damper mechanism) 42.
is configured. Since the protruding pin 41 of the buffer means 42 comes into contact with the front side of the base 31 when the operation panel 30 is tilted, the operation panel 30 can be smoothly tilted forward by 90 degrees, and the operation means 33 etc. The vibration of the operation panel 30 can be absorbed when the operation panel 30 is operated.

A pair of magnet receiving plates 38 and 38 are embedded in both sides of the inner surface of the operation panel 30 on the tip side. The pair of magnet receiving plates 38.38 are a pair of magnets 28.2 embedded in the recess 2b of the front surface 2a of the device main body 2.
8, the operation panel 30 stands up and the concave portion 2b is maintained in a closed state. Further, on one side of the inner surface of the operation panel 30, operation buttons 39 such as a counter reset button are provided.

Further, as shown in FIG. 2.9.10, the slide base 18 disposed on the tape inlet side A of the rotary head drum 17 rotatably supports a T-shaped tape stabilizer 50. At the same time, the drum mounting base 16 disposed on the tape exit side B rotatably supports an H-shaped tape stabilizer 60.

The T-shaped tape stabilizer 50 includes a support shaft 51 erected on the slide base 18, and a sleeve-like shaft rotatably supported on the support shaft 51 via a pair of ring-shaped oil bearings 52, 52. It is composed of a guide roller 53, a disc-shaped annular weight 54 fitted to the upper part of the guide roller 53, and a washer 55 for preventing removal, which is locked to the upper end of the support shaft 51.

The H-shaped tape stabilizer 60 is rotatably supported by a support shaft 61 erected on the drum mounting base 16 and a pair of ring-shaped oil-impregnated bearings 62 and 62 on the support shaft 61. Thick sleeve-shaped guide roller 63
The guide roller 63 is composed of a resin-made, disc-shaped, annular lid 64 fitted onto the upper part of the guide roller 63, and a washer 65 for preventing removal, which is secured to the upper end of the support shaft 61. And the equivalent quality of the above T-shaped tape stabilizer 50 on the tape entrance side A! (g-sec”7cm) is the equivalent quality 1 of the above H-shaped tape stabilizer 60 on the tape exit side B.
3 (rsec2/c+1).

When the tape cassette 70 is inserted through the cassette insertion port 4, it is held by a cassette holder (not shown) and mounted on the pair of reel stands 21, 21 of the chassis I5. The lid body 80 also has a power button 7.
and phases 81 and 82 for operating the cassette eject button 8. Further, similarly to the operation panel 30, a lid body 80
A pair of magnet receiving plates 8 are installed on both sides of the inner surface of the tip side.
3°83 is buried. This pair of magnet receiving plates 8
3.83 is magnetically attached to a pair of magnets 29, 29 buried on both sides of the recess 2C in the front surface 2a of the device main body 2, so that the lid 80 stands up and maintains the recess 2c closed. It is now possible to do so.

According to the VTR 1 of the above embodiment, the front surface 2a of the device main body 2
When operating the jog dial 33a, shuttle ring 33b, etc. of the operation panel 30 rotatably supported on one side of the device, first, a pair of magnets 28. The upper part of the operation panel 30, which is magnetically attached via the pair of magnet receiving plates 38 and 38, is pulled forward. As a result, the operation panel 30 rotates about 90'' about the shaft 32, and the inner surface of the operation panel 30, where the jog dial 33a and the like are provided, becomes horizontal as shown in FIG. Two buffer means 37 and 42 are interposed between the front surface 2a and the operation panel 30 via the base 31, so that vibrations caused when the operation panel 30 is rotated forward about the shaft 32 and brought down are prevented. can be reliably absorbed,
The operation panel 30 does not jump up due to its weight or the like as in the conventional case, and falls down smoothly. Further, the jog dial 33a shuttle ring 3 of the operation panel 30
3b, etc., the vibrations of the operation panel 30 can be reliably absorbed by the two buffer means 37 and 42.

In addition, as shown in FIG. 2, the chassis 15 including the rotating head drum 17, which is the heaviest part of the VTR 1, is installed approximately in the center of the frame IO of the device main body 2 via three buffer means I4. The left and right balance can be equalized, and the occurrence of twisting etc. can be suppressed. Furthermore, when comparing the vibration level, which greatly affects image and sound quality, with that of a conventional VTR whose mechanical chassis is biased to one side, the test results shown in Figure 12.13 were obtained. No. 12゜13
The figure shows the vibration level of the chassis 15 detected near the rotating head drum 17 in the playback (PB) state.
FIG. 12 shows the case where the rubber elastic member 12 of the buffer means (4) has a rubber hardness of 50 degrees, and FIG. 13 shows the case where the rubber elastic member I
The case where the rubber hardness of No. 2 is 100 degrees is shown. Further, in the figure, the horizontal axis shows frequency (Hz), and the vertical axis shows amplitude (dB), and the present case is shown by a solid line ■, and the conventional one is shown by a dotted line ■. As is clear from the comparison diagram of the test data, it was found that the vibration characteristics of the chassis I5 were able to suppress vibrations in the low frequency range (125 Hz or less) more than the conventional chassis in all cases.

Thereby, image quality and sound quality can be further improved compared to conventional ones.

In this way, the negative effects on image quality and sound quality can be minimized, so more stable tape running can be realized, and jitter components that appear as image shaking can be reduced as much as possible.

Furthermore, as shown in FIG. 2, tape stabilizers 50 and 60 are placed on the tape loading side A and the tape exit side B of the rotary head drum 17, respectively, so that the conventional tape stabilizer 50 and 60 are provided only on the tape loading side. The longitudinal vibration of the tape 7I relative to the rotary head drum 17 can be suppressed compared to the conventional case. The test results of the vibration characteristics of this tape 71 are shown in FIG. In the figure, the horizontal axis indicates frequency (kHz) and the vertical axis indicates amplitude (dB), and the present case is shown by a solid line ■, and the conventional one is shown by a dotted line ■. As is clear from the comparative explanatory diagram of this test data, it was found that tape vibration could be attenuated to a maximum of 10 dB more than the conventional one in the frequency range of 1.4 kHz. This makes it possible to minimize the occurrence of jitter due to unnecessary vibrations caused by the tape 7I, and to reproduce sharp images.

Although the embodiment described above is applied to an M-loading type VTR, the present invention is not limited to this, and can be applied to various recording and reproducing apparatuses such as a U-loading type VTR. Further, it goes without saying that the operation means provided on the operation panel is not limited to a jog dial or the like.

[Effects of the Invention] As described above, according to the recording/reproducing device of the present invention, at least two buffer means are interposed between the front surface of the main body of the device and the operation panel having the operation means for switching the mode, so that the above-mentioned operation is possible. It is possible to reliably absorb vibrations when rotating the panel forward and folding it down, and also reliably absorb vibrations when operating the operating means of the operation panel.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a VTR showing an embodiment of the present invention, FIG. 2 is a plan view of a resin frame used in the VTR,
Figure 3 is a sectional view taken along line III-III in Figure 2;
The figure is a plan view of the operation panel of the same VTR, Figure 5 is a rear view of the operation panel, Figure 6 is a side view of the operation panel, Figure 7 is a sectional view of the operation panel, and Figure 8 is the same operation. An explanatory diagram showing the tilting operation of the panel, Fig. 9 is a cross-sectional view of the tape stabilizer on the tape input side, Fig. 1O is a cross-sectional view of the tape stabilizer on the tape exit side, and Fig. 11 is a data comparison explanation of the tape frequency analysis results. Figure 12 is an explanatory diagram comparing data of vibration characteristics when the rubber hardness of the rubber elastic member is 50 degrees, and Figure 13 is an explanatory diagram comparing data of vibration characteristics when the rubber hardness of the rubber elastic member is 100 degrees. be. l...VTR (recording/reproducing device), 2...device main body,
2a...Front surface, 30...Operation panel, 33...Operation means, 37.42...Buffer means. Fig. 2 mm-m latitude cross-section Fig. 3 Fig. 6 Fig. 7 Fig. 11 Illustration panel tilt vJ construction f explanation sentry drawing Fig. 8

Claims (1)

[Claims] (1) In a recording/reproducing device in which an operation panel having operation means for switching modes, etc. is rotatably supported on the front side of the apparatus body so that the operation means can be seen and hidden, the front side of the apparatus body and the operation panel at least 2 between
1. A recording/reproducing device characterized by having two buffering means interposed therebetween.