JPS5816187Y2 - Support device for magnetic recording and reproducing devices - Google Patents

Description

[Detailed description of the invention] The present invention relates to a support device for a magnetic recording/reproducing device using a recording medium such as a rotating magnetic sheet, and its purpose is to support the magnetic recording/reproducing device with an elastic member such as a spring. A simple structure that eliminates vibrations transmitted to the magnetic recording/reproducing device and prevents image distortion or color shift that occurs on the playback screen, and also allows the device to be fixed when transporting the device or other times as necessary. The present invention provides a support device for a magnetic recording/reproducing device.

Conventional general vibration isolation structures include those that support the device by fixing an elastic member such as rubber between the device and its support, but in this case, even if the device is moved together with the support, it will not be affected by shocks, etc. In order to prevent damage to the device due to this, it is necessary to strengthen the elastic member, that is, to increase the spring constant, which has the disadvantage of reducing the vibration-proofing effect.

Furthermore, if the elasticity of the elastic member is simply weakened, that is, the spring constant is lowered, in order to enhance the vibration-proofing effect, the button may be damaged as the device is moved during transportation or the like.

For this reason, when a strong impact is applied to the device during transportation, a separate fixing device is provided for the device, but this fixing device not only has a complicated structure but is also inconvenient to handle.

In view of this, the present invention has a substantially integral structure of the elastic member and the fixing device, which can completely absorb external vibrations during normal use of the device. The object of the present invention is to provide a supporting device for a magnetic recording/reproducing device having a simple structure, which can reduce the fluctuation of the device and completely fix the device if necessary.

The device of the present invention will be explained below with reference to FIGS. 1 to 4, in terms of how a part of the device is assembled. A motor 3 is attached to the shaft 4 of the motor to provide rotation, and a control gear 5 for controlling the rotation and a seat base 6 for placing the magnetic sheet 2 are attached to the shaft 4 of the motor.
Install.

γ is a stabilizing plate that gives stable floating rotation to the magnetic sheet 2,
This stabilizing plate T is fixed to a plurality of support rods 8 erected on the substrate 1 with screws 9.

Further, a head mounting plate 11 is attached to a plurality of support rods 10 erected on the stabilizing plate T with screws 12.

Furthermore, a head base 1 with a magnetic head 13 attached to the tip
4 is attached to the head support 16 at a predetermined height with screws 15.

The head support 16 is attached to the head mounting plate 11 with screws 17.
Fixed.

18 is a cover for dustproofing, etc., and this cover has screws 19
is fixed on the substrate 1.

Note that since the recording and reproducing apparatus a is of the Y and C separation type, the two magnetic heads 13 are arranged at different radii from the center of rotation.

In the recording/reproducing apparatus a, when the magnetic sheet 2 is rotated at a constant speed by the motor 3, the magnetic sheet 2 rotates in a state slightly floating above the stabilizing plate T, and at the same time, the magnetic head 9 comes into contact with the magnetic sheet 2, and a signal is generated. It is possible to record or play back.

However, when this magnetic recording and reproducing device a is used in a state where it is incorporated into a television receiver, etc., vibrations from the speakers caused by the sound on the TV side are transmitted from the TV cabinet to the magnetic recording and reproducing device a, which causes uneven rotation of the motor 3. This causes distortion and color shift on the reproduced screen, and this deterioration phenomenon of reproduced images is caused not only by vibrations caused by the sound of the TV but also by other external vibrations. This requires equipment.

Next, the supporting device for the magnetic recording/reproducing apparatus a will be explained. Reference numeral 20 indicates a side plate of a television cabinet, and reference numeral 21 indicates a bottom plate of this cabinet.

A stepped rod 24 consisting of a large diameter portion 22 and a small diameter portion 23 has a concave groove portion 25 in the small diameter portion 23 approximately at the center thereof, and a threaded portion 26 at the tip thereof.

The support plate 27 is fixed to the bottom plate 21 of the cabinet with screws 28.

Further, a retaining ring 29 is fitted into the groove 25 to prevent the stepped rod 24 from coming out from the support plate 2T.

A hole 30 having a diameter larger than the small diameter portion 23 of the stepped rod 24 and smaller than the large diameter portion 22 is provided in the support plate 27 at a position corresponding to the stepped rod 24.

Further, a compression spring 31 is provided around the large diameter portion 220 and separated from the spring by some distance, and the compression spring 31 is attached to the support plate 27 by a method such as gluing so that it is concentric with the hole 30 on the support plate 27. It is positioned by a first positioning member 32 fixed to.

Further, the second positioning member 33 is fitted and fixed at the upper end of the large diameter portion 22 of the stepped rod 24, and its outer circumference is made to substantially match the inner diameter of the compression spring 31.

Two mounting plates 35 to which the magnetic recording/reproducing device a is fixed with screws 34 are each fixed on the four stepped rods 24 with screws 36.

The height and strength (spring constant) of the compression spring 31 are arbitrarily set in consideration of the stacking of the magnetic recording/reproducing apparatus a, the nature of vibration to be damped, etc.

When using the magnetic recording and reproducing device a, press the button and press the stepped rod 2.
4 and the upper surface of the support plate 2T or the retaining ring 29 and the support plate 2
The lower surface of T, the small diameter part 23 of the stepped rod 24 and the support plate 2
The positional relationship is initially set so that the T holes 30 do not come into contact with each other.

Furthermore, an escape hole 3T is provided in the bottom plate 21 of the cabinet to prevent contact with the retaining ring 29 provided on the stepped rod 24.

Next, the operation of the support device, which is the essential part of the present invention, will be explained.

In other words, when the buttons in Figures 2 and 3 are pressed, and when the magnetic recording/reproducing device a is in use, when vibrations due to audio from the television receiver are transmitted to the bottom plate 21 of the cabinet, the magnetic recording/reproducing device a is supported by the compression spring 31 of the support device. Therefore, the effect of this vibration on the magnetic recording/reproducing device a can be eliminated by being attenuated by the compression spring 31 of the vibrating box of the cabinet, and the buttons that cause curvature and color shift on the reproduced screen are eliminated.

In order to completely eliminate the influence of this vibration, support plate 2
It is necessary to support the magnetic recording and reproducing device a on the support plate 7 using only elastic members such as springs that do not come into contact with the support plate. Also, the compression spring 31 and the stepped rod 24 are supported by the first positioning member 32 and the second positioning member 33, and the small diameter portion 23 of the stepped rod 24 follows the free deformation of the compression spring 31. is hole 30 of support plate 2T
Therefore, the magnetic recording/reproducing device a can be supported completely floating above the support plate 27 by the compression spring 31, and vibrations from the cabinet are almost completely eliminated. Can be absorbed.

Also, the first positioning member 32 and the second positioning member 3
If 3 is made of an elastic material such as rubber, the vibration-proofing effect will be even better.

Furthermore, it is clear that the structure of the support device b of the present invention has the same effect as described above against vibrations from outside, not just vibrations from the sound of the television receiver.

When moving a television receiver with a built-in magnetic recording/reproducing device, the receiver may be tilted or subjected to some impact. A retaining ring 29 is provided to prevent removal, and the hole 30 on the housing support plate 2T prevents unnecessary movement of the stepped rod 24, so that the above-mentioned inclination and impact may occur. Therefore, the television receiver can be moved without damaging the magnetic recording/reproducing device a.

Next, to explain the case of fixing the magnetic recording/reproducing device a to the bottom plate 21 of the cabinet, in FIG.
On the other hand, when the wing nut 39 is tightened through the flat washer 38, the compression spring 31 is compressed to some extent, and the stepped portion of the stepped rod 24 and the support plate 27 come into contact with each other and become fixed.

Therefore, if there is a risk that a large impact will be applied to a television set with a built-in magnetic recording/reproducing device a, etc., during transportation, etc., the magnetic recording/reproducing device a can be attached to a television receiver, etc. Can be fixed.

i1 The device of the present invention is provided with a support plate 2T on the bottom plate 21 of a television receiver, etc., but this is only possible when a material with low mechanical strength such as a wooden board is used as the bottom plate 21 of the television receiver. If a mechanically strong dog is used as the bottom plate, the support plate 27 may be omitted.

As shown in FIGS. 1 to 9, the fixing means described above includes an L-shaped elastic plate 42 having a groove 40 at the tip of the small diameter portion 23 of the stepped rod 24 and having a U-shaped notch 41 in the groove. may be fitted.

Furthermore, as a support device, a mounting plate 3 as shown in FIG.
5, a hole 30 into which the small diameter portion 23 of the stepped rod 24 is inserted.
Alternatively, one end of the stepped rod 24 may be fixed by a supporting plate 27, and the magnetic recording/reproducing apparatus a may be suspended and supported by a compression spring 31.

In this case, the magnetic recording/reproducing device a can be easily fixed by tightening a cap-shaped fixing fitting 43 from above, as shown in FIG.

As a means for positioning the twisted compression spring 31, as shown in FIG. Further, the second positioning member 33 may be fixed on the mounting plate 35 by means of adhesive or the like so as to correspond to the hole 30 and substantially match the outer diameter of the compression spring 31.

Another method is to position the first positioning member 32 on the support plate 27 concentrically with the hole 30 and approximately in line with the inner diameter of the compression spring 31, as shown in FIG. and then insert the second positioning member 33 into the hole 3.
0 and may be fixed on the mounting plate 35 so as to substantially match the outer diameter of the compression spring 31.

Furthermore, as shown in FIG. 12, the compression spring 31 and the stepped rod 24 may be arranged at independent positions.

No matter which of the above-mentioned means is used, the compression spring 31 and the stepped Lloyd 24, the first positioning member 32 and the second positioning member 33 prevent the magnetic recording/reproducing apparatus a from moving in the lateral direction. Support plate 27 or mounting plate 3
The hole 30 on the stepped rod 24 and the small diameter portion 23 of the stepped rod 24 can be kept in a non-contact state against minute vibrations of the magnetic recording/reproducing device a.

The supporting device for a magnetic recording/reproducing device according to the present invention has the following advantages.

(1) Since the magnetic recording/reproducing device can be supported by an elastic member having an arbitrary spring constant, vibrations transmitted to the magnetic recording/reproducing device can be almost completely blocked.

(2) The magnetic recording/reproducing device can be prevented from falling off the support device, and the magnetic recording/reproducing device can be easily fixed onto the support device as needed.

(3) Since the elastic member and the stepped rad can be constructed substantially integrally, the device can be downsized.

[Brief explanation of drawings]

Fig. 1 is a plan view of one embodiment of the device of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a sectional view taken along line A and A in Fig. 1, and Fig.
The figure is a side view of a part of the above embodiment when it is fixed; The figures are a side view and a perspective view of another embodiment of the fixing means for the magnetic recording/reproducing device and its support device, FIGS. 10 and 11 are side views of other different embodiments of the positioning member, and FIG. It is a sectional view of a part of other embodiments of the present invention.a...Magnetic recording/reproducing device, 35...Mounting plate, 21...
・Support stand, 24...Stepped rod, 31...Elastic member, 23...Small diameter part of stepped rod, 22...Large diameter part,
30... Hole, 29... Do not remove, 32.33...
Two positioning members, 38.40...engaging portion, 39,
42...Fixing tool.

Claims (2)

[Scope of utility model registration request] (1) The large diameter end of the stepped rod is fixed to the first member of either the mounting plate of the magnetic recording and reproducing device and the support base that supports the magnetic recording and reproducing device, and the large diameter end of the stepped rod is fixed to the second member of the other one. A through hole having a diameter smaller than the large diameter part of the stepped rod and larger than the small diameter part is provided in the stepped rod, and the small diameter part of the stepped rod is passed through the through hole, and the stepped rod is not pulled out through the small diameter part. A stop is provided between the mounting plate and the support base, and an elastic member is provided between the mounting plate and the support base so as to bias the mounting plate and the support base in a direction that separates the support base, and so that the 744 part and the through hole are concentric. Both ends of the elastic member are attached to predetermined positions on the mounting plate and the support base, respectively, and are engaged with an engaging portion provided on the small diameter portion of the stepped rod, so that the stepped rod is connected to the large diameter portion of the stepped rod. A fixture is fixed to the second member in a state in which the part is in contact with the second member against the elastic force of the elastic member, and the stepped rod and the second member are fixed and loosened OT. 1. A support device for a magnetic recording/reproducing device, characterized in that the support device is provided in such a manner that the support device can be used in a magnetic recording and reproducing device. (2) The support device for a magnetic recording and reproducing device according to claim 1, wherein the elastic member is a compression spring fitted to the outer periphery of the stepped rod.