JP2578016Y2 - Anti-vibration support mechanism for playback device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an anti-vibration system with a high degree of freedom in installing a magazine storage / reproducing apparatus for selecting an information recording disk such as a CD stored in multiple levels in a magazine, sending the selected information recording disk to a turntable, and reproducing the information. It relates to a support mechanism.

[0002]

2. Description of the Related Art A playback device such as a home CD disk playback device is designed on the premise that the playback device is placed horizontally. On the other hand, since the on-vehicle equipment is installed in a narrow space inside the vehicle, the installation form is appropriately changed to a horizontal or vertical installation according to the internal space of the trunk and the relationship of position with other items and the like. I have. Therefore, in-vehicle playback devices are required to have a high degree of freedom in installation form.

[0003] The present inventors have developed a CD player which can be used either horizontally or vertically, and which can pick up in accordance with the installation posture. As one of them, as shown in FIG. 1, a CD player in which a support frame 1 is floatingly supported in an outer casing 2 is provided.
It was proposed in Japanese Patent Application No. 1-109666.

In this floating support device,
The damper 2a ₁ to 2A region ₄ filled with viscous fluid such as silicon oil inside the four corners of the outer casing 2 is fixed, the one end of the supporting rod 2b ₁ ~2b ₄ are inserted into the damper 2a ₁ to 2A region _4. The other end of the support rod 2b ₁ ~2b ₄ is attached to the support plate 1a ₁ to 1A ₄ secured to the support frame 1.

[0005] A plurality of trays are vertically stacked on the magazine 3 housed in the support frame 1, and has a function as a disc changer for sending out an appropriate tray to a pickup section and exchanging a playback disc. Tray 3b _n equipped with the disk 3a _n to be reproduced
Is kicked out by an appropriate kicking mechanism and is positioned at the position shown in the figure. Disc 3a _n is held in this position by a clamper (not shown), information recorded on the disc 3a _n is reproduced by the pickup 3c.

The side surface of the support frame 1 and the outer casing 2
The anti-vibration mechanism 4 is provided between the inner side and the inner side. Anti-vibration mechanism 4 is provided with four vibration isolating springs 4a ₁ to 4A ₄ which is stretched between the inner surface of the outer casing 2 at both sides of the support frame 1. Vibration isolating springs 4a ₁ to 4A ₄ has a lower end pivotably mounted to the support shaft 4b ₁ ~4b ₄ attached to the side surface of the support frame 1, the rotary plate 4c ₁ ～4C projecting end of ₄ 4j ₁ upper end ～4J ₄ is rotatably mounted.

[0007] rotation plate 4c ₂ is pivotally mounted on the inner surface of the outer casing 2 by a support shaft 4d _2. The rotary plate 4c _2, arcuate openings 4e _2, 4f ₂ a central angle of 90 degrees is formed point-symmetrically about the support shaft 4d _2. Guide shafts 4g ₂ and 4h ₂ fixed to the side surface of the outer casing 2 are engaged with the arc-shaped openings 4e ₂ and 4f ₂ , respectively. The other rotating plates 4c ₁ , 4c ₃ and 4c ₄ have the same configuration.

[0008] In the state of FIG. 1 in which the CD player transversely, projecting end of each time rotation plate 4c ₁ ~4c ₄ 4j ₁ ~4j ₄
There located above, anti-vibration spring 4a ₁ to 4A ₄ it becomes closer to upright lowered from the upper side of the outer casing 2 hanging support frame 1. Accordingly, vibration generated when a vehicle or the like with a CD player is traveling, vertical force exerted by the impact or the like is absorbed by the elastic deformation of the vibration isolating springs 4a ₁ to 4A _4, giving a vibration to the support frame 1 Nothing.

[0009] When changing from Desktop the installation mode of the CD player in the upright position, the rotary plate 4c ₁ ~4c ₄ is rotated 90 degrees in the same direction. As a result, the anti-vibration spring 4a ₁ ~4a
₄ is extended in the depth direction of the outer casing 2, and the support frame 1 is hung in the outer casing 2 in the depth direction. Therefore, the vibration in the depth direction which occurs during running of the vehicle, external force such as shock is absorbed in a similar elastic deformation of the vibration isolating springs 4a ₁ to 4A _4, it is not to propagate the vibration to the supporting frame 1.

[0010]

The present invention is to provide a rotary plate 4c ₁ ~4c ₄
Rotation operation to the stretched direction of the vibration isolating springs 4a ₁ to 4A ₄ can be installed horizontal or vertical either CD player by return ores in free practice when installing the CD player to narrow interior space Greatly improve the degree. However, the anti-vibration spring 4a
It is necessary to work to change the stretched direction of _{1 ~4a 4.}

[0011] anti-vibration spring 4a ₁ to 4A stretched direction of change of _4, i.e., the rotational operation of the swing plate 4c ₁ ~4c ₄ is a Eteshite forget. In particular, in that there is a plurality of rotary plates 4c ₁ ~4c ₄ as shown in FIG. 1, one or more of which tend to set up the CD player in the vehicle in the state of intact. Moreover, after installed, it is impossible to confirm whether the stretched direction of the vibration isolating springs 4a ₁ to 4A ₄ are set correctly.

[0012] anti-vibration spring 4a ₁ to 4A ₄ is stretched in the wrong direction, the vibration generated during vehicle running, can not absorb the external force such as an impact, the damper 2a ₁ to 2A region ₄
Vibration propagating to the support frame 1 via the support member 1 increases.
As a result, deterioration of the damper 2a ₁ to 2A region ₄ is intense, the loading mechanism of the magazine 3 and the pickup 3c like incorporated in the supporting frame 1, a failure in reproduction mechanism and the like, which causes a trouble such as malfunction occurs.

The present invention has been devised in order to solve such a problem. By arranging the support frame in the outer casing via a vibration isolating spring stretched in two directions, the present invention can be used for horizontal and vertical positioning. The loading mechanism incorporated in the support frame, effectively absorbing the external force by the elastic deformation of the anti-vibration spring, without any need for replacement of the anti-vibration spring, regardless of the vertical installation mode. It is intended to protect functional units such as a reproducing mechanism.

[0014]

In order to achieve the object, a vibration isolating support mechanism for a reproducing apparatus according to the present invention has the reproducing apparatus main body inside an outer casing by vibrating mechanisms provided on both sides of the reproducing apparatus main body. A support device for elastically supporting, wherein the anti-vibration mechanism comprises: a locking protrusion protruding from a side surface of the playback device main body; two locking portions formed on an inner wall of an outer casing; and the locking protrusion. A pair of anti-vibration springs extending between the locking portions and extending in different directions, one of the anti-vibration springs absorbing vibration in the thickness direction of the playback apparatus main body; Is characterized by absorbing vibration in the depth direction of the playback apparatus main body.

The anti-vibration mechanism includes a locking projection protruding from a side surface of the reproducing apparatus main body, two locking portions formed on the inner wall of the outer casing, and a portion between the locking projection and the locking portion. It is also possible to use one provided with a pair of anti-vibration springs that are stretched over the other. In this case, the extension angle of the anti-vibration spring is set so that the region in which the locking projection connecting the two springs moves is reduced even if the load application direction is changed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described specifically with reference to the accompanying drawings. As shown in FIG. 2, the vibration isolating support mechanism for the reproducing apparatus according to the first embodiment includes two vibration isolating mechanisms on one side of the main body of the reproducing apparatus. The main body 10 of the reproducing apparatus is similar to the case of FIG.
The dampers 21 arranged at the four inner corners of the outer casing 20 are floatingly supported inside the outer casing 20. Further, an anti-vibration mechanism 30 is disposed between the playback device main body 10 and the outer casing 20.

The anti-vibration mechanism 30 is provided at two places on one side of the reproducing apparatus main body 10 (four places in total), and all have the same structure. The anti-vibration mechanism 30 includes the playback device main body 1
The anti-vibration springs 31a and 31b are provided to extend in the thickness direction and the depth direction, respectively.

A locking projection is provided on a side surface of the reproducing apparatus main body 10 so as to protrude laterally, and a hook portion 15 is formed at a tip of the locking projection. The hook portion 15 is provided with the vibration isolating spring 3.
Hook one end of 1a, 31b.

The outer casing 20 has an opening 23 formed in the chassis sheet metal 22 at a position facing the vibration isolating mechanism 30. The opening 22 is provided with the chassis sheet metal 2 as shown in FIG.
The locking projections 24a and 24b extending from the projection 2 protrude. The locking projection 24a extends in the depth direction of the reproducing apparatus main body 10, and the locking projection 24b extends in the thickness direction of the reproducing apparatus main body 10.

At the tips of the locking projections 24a and 24b, locking portions 25a and 25b for hooking the other ends of the vibration isolating springs 31a and 31b, respectively, are formed. Locking projection 24
At the base ends of the a and b, the deformation of the locking projections 24a and 24b due to the elasticity of the vibration isolating springs 31a and 31b is prevented,
In addition, the anti-vibration springs 31a, 31b are fixed to the locking projections 24a, 24.
Reinforcing ribs 26a and 26b are provided so that the spring hook portion does not interfere with the outer case when hung on b.

The antivibration spring 31a and 31b when to stretched respectively in the thickness direction and the depth direction of the reproducing apparatus main body 10, proof in rotation operation or the like of the rotating plate 4c ₁ ~4c ₄ described using Figure 1 switching the stretched direction of vibration springs 4a ₁ to 4A ₄ becomes unnecessary.

As shown in FIG. 2, when the magazine storage / reproduction device is placed horizontally and mounted in a vehicle, the reproduction device main body 10
Is suspended inside the outer casing 20 by a vibration-proof spring 31a. Vibration, impact, and the like due to running of the vehicle and the like act in the thickness direction of the reproducing apparatus main body 10. At this time, vibration, impact, and the like are absorbed by the elastic deformation of the vibration-proof spring 31a extending in the thickness direction. The other vibration isolating spring 31b is free in the depth direction.

When the magazine storage / reproduction device is installed vertically in the vehicle, the reproduction device main body 10 is suspended in the outer casing 20 in the depth direction by a vibration-proof spring 31b.
Vibration, impact, and the like due to running of the vehicle, etc.
Acts in the depth direction of the spring, but extends in the depth direction.
It is absorbed by the elastic deformation 1b. The other anti-vibration spring 31a
Are elastically deformed freely along the thickness direction of the reproducing apparatus main body 10.

As described above, the anti-vibration spring 31a or 31b works in accordance with the installation mode of the horizontal or vertical installation, and the vibration, impact, and the like generated during the running of the vehicle are reproduced.
Will not be propagated. Even if the magazine storage / reproduction device has to be installed at an angle due to the location of other devices arranged in the vehicle, the vibration isolating spring 31a can be used.
And 31b work together as a vibration absorber, and the propagation of vibration and the like to the reproducing apparatus main body 10 is suppressed.

The elastic deformation of the vibration isolating spring (31a in the installation configuration of FIGS. 2 and 3) which suspends the reproducing apparatus main body 10 may be restricted by the other vibration isolating spring 31b. To eliminate the restraint by the other anti-vibration spring 31b or 31a, for example, as shown in FIG. 4, each of the vibration-proof springs 31a, as 31b, mutually connecting the pair of springs 31a ₁ and 31a ₂ and 31b ₁ and 31b ₂ Can be used.

When the anti-vibration spring 31a suspending the playback apparatus main body 10 is going to be elastically deformed, the elasticity of the anti-vibration spring 31a is fixed in a state where the distance between the hook portion 15 and the locking portion 25b is fixed. Deformation is restricted, which hinders vibration absorption. In this regard, the springs 31b ₁ , 3 connected to each other
When 1b ₂ is stretched between the hook portion 15 and the locking portion 25b, the connecting portion 32 between the springs 31b ₁ and 31b ₂
Move freely up and down as shown in FIG. Therefore, the vibration-proof spring 31a is elastically deformed without being restrained by the other vibration-proof spring 31b, and the propagation of vibration to the reproducing apparatus main body 10 is effectively suppressed.

Further, as shown in FIG.
The other anti-vibration spring 3 can also be formed by loosening the fitting between the locking portions 25a and 25b so that the anti-vibration springs 31a and 31b do not come off from the locking portions 25a and 25b.
Without being restricted by 1b, the vibration isolating spring 31a is elastically deformed in response to the applied external force.

In this case, deep cut grooves 27a, 27b are formed in the locking portions 25a, 25b, and the solid portions 28a, 28b are formed.
The size of the locking ring 3 for the vibration isolating springs 31a and 31b
It is smaller than the inner diameter of 3a, 33b. Solid part 28
In the state where there is an asobi in a or 28b, the locking ring 33
a or 33b is fitted, the playback device main body 1
When one of the anti-vibration springs 31a or 31b undergoes elastic deformation under a load of 0, the other anti-vibration spring 31b or 31a
The elastic ring of the anti-vibration spring 31a or 31b does not restrict the elastic deformation of the vibration isolating spring 31a or 31b. The fitting with asobi is the playback device body 1
The same applies to the locking between the hook portion 15 on the zero side and the vibration isolating springs 31a and 31b.

The anti-vibration support mechanism for the reproducing apparatus according to the second embodiment comprises:
As shown in FIG. 7, locking projections 24a and 24b are provided in the opening 23 of the outer casing 20, and the locking projections 24a and 2b are provided.
4b so that the anti-vibration springs 31a and 31b extended between the hooks 15a of the playback device main body 10 and the hooks 15a of the playback device main body 10 extend on one inclined line without load.
The positional relationship between 5a, 25b and hook 15 is determined.

When the magazine storage / reproduction device is installed in the horizontal installation state, the weight of the reproduction device main body 10 is reduced by the locking portion 25.
a and is mainly received by a vibration-proof spring 31a stretched between the hook portion 15 and the hook portion 15a. Therefore, the anti-vibration spring 31a
Extends as shown in FIGS. 7 and 8. The other anti-vibration spring 31b stretched between the locking portion 25b and the hook portion 15
Is slightly smaller in extension than the vibration isolating spring 31a due to the weight of the reproducing apparatus main body. The expansion and contraction of the vibration isolating springs 31a and 31b are integrated, and external force such as vibration and impact applied to the magazine storage / reproduction device is absorbed.

In the vertically installed state, the anti-vibration spring 31b is extended, and the anti-vibration spring 31a is in a state of being contracted more than the anti-vibration spring 31b. External forces such as vibration and impact applied to the magazine storage / reproduction device are mainly absorbed by the elastic deformation of the vibration isolation spring 31b.

With the playback apparatus main body 10 suspended, the position of the hook portion 15 deviates from the straight line connecting the locking portions 25a and 25b, and an angle is generated between the vibration isolating springs 31a and 31b. Therefore, the elastic deformation of one of the vibration-proof springs 31a or 31b is hardly hindered by the other vibration-proof spring 31b or 31a. In this way, the vibration propagation to the reproducing apparatus main body 10 is effectively suppressed regardless of whether the apparatus is installed horizontally or vertically.

A pair of anti-vibration springs 31a, 31 arranged in an inclined manner
In order to reduce the amount of movement with respect to the change of the installation posture at the time of horizontal installation and vertical installation by b, and to secure a range in which vibration is absorbed, it is preferable that the extension angles of the vibration isolation springs 31a and 31b be within a predetermined range. The stretching angle is determined as follows.

The springs S ₁ and S ₂ having the same spring coefficient are
Are connected to each other at a connection point P ₀ as shown in FIG.
Locked to the ₁ and P _2. When the connecting point P ₀ no load is applied, the spring S ₁ and S ₂ is stretched on a straight line connecting the fulcrum P ₁ and P ₂ as shown in FIG. 9 (a), the initial length L ₁₀ and it has the L _20. The angle between the straight line connecting the fulcrums P ₁ and P ₂ and the horizontal line is defined as the tension angle α of the springs S ₁ and S ₂ .

When gravity mg is added to the connection point P ₀ , as shown in FIG. 9B, the length of the spring S ₁ receiving the gravity mg is slightly smaller than the length of the spring S _2. next _11, the length of the spring S ₂ is pulled by gravity mg becomes extension length L _21. Connection point P ₀ is moved from the straight line connecting the fulcrum P ₁ and P ₂ in a position shifted downward. When assuming an in-vehicle disc changer, it is weight to ensure a range in which the playback apparatus main body 10 can move by receiving vibration, that is, a vibration stroke in each direction. Horizontally placed or vertical magazine accommodating reproducing device, the direction of gravity mg is added is changed, it appears as a movement of the connecting point P _0. Therefore, by minimizing the movement distance of the connection point P _0, it is possible to ensure the vibration stroke of the reproduction apparatus main body 10.

Therefore, the influence of the extension angle α on the movement distance of the connection point P ₀ was examined as follows. First, FIG.
As shown at 0, the fulcrums P ₁ and P ₂ are set horizontally,
A pair of springs S ₁ and S ₂ connected to each other at a connection point P ₀
The is stretched between the support point P ₁ and P _2. The connection point P ₀ is located at the origin O in the no-load state. When a downward force F is applied to the connection point P ₀ , the springs S ₁ and S ₂ are extended, and the connection point P ₀
Moves downward from the origin O.

When the direction of the force F applied to the connection point P ₀ was changed by 15 degrees, the connection point P ₀ moved to the movement point P _{n according} to the distribution shown in FIG. From the distribution state of FIG.
It can be seen that _n has density. The moving point P _n are distributed in coarse illustrates that the connecting point P ₀ with the change in direction of the force F moves greatly. This means that the vibration stroke of the playback device main body 10 is reduced.

The dense distribution of the moving points P _n means that the connecting point P ₀ does not move much even if the applied angle of the force F changes slightly. Applying the condition _where a dense distribution of the moving points P _n is obtained as a change in the installation direction of the magazine storage / reproduction device, the amount of movement with respect to the change in the installation posture of the reproduction device main body 10 is small, and the predetermined vibration Stroke can be secured. In addition, when the installation mode of the magazine storage / reproduction device is changed from horizontal to vertical, the method of applying the force F changes by 90 degrees.

A region where the moving points P _n are densely distributed in the 90-degree angle range is a vertically symmetric moving point P _{n in} FIG.
At the upper (lower) part of the distribution of the above-mentioned distribution, the angle was obtained by setting the application angle of the force F to the right and left at 45 degrees each. That is, the supporting points P ₁ and P ₂ and the connecting point P ₀ are
When the anti-vibration springs 31a and 31b are stretched as the a and 25b and the hook portion 15 (see FIGS. 7 and 8), a force F _H is applied in a horizontally installed state, and a force F _{V in} a vertically installed state. Is added. In any case, the connection point P ₀ is located in a region where the movement points P _n are densely distributed. Therefore, even when the magazine storage / reproduction device is installed in the vehicle in either the horizontal or vertical configuration, the amount of movement with respect to the change in the installation posture of the reproduction device main body 10 is small, and the vibration stroke is secured. I was able to.

[0040] In the description using Figures 9-11, it is assumed that the use of springs S ₁ and S ₂ spring coefficient are equal. However, without being restricted to this, it is of course possible to use the vibration isolating springs 31a and 31b having different spring coefficients. In this case, based on the difference between the two spring coefficients, 9
The applied angle of the force F for obtaining a region where the moving points _Pn are densely distributed in the angle range of 0 degrees also changes. Therefore, the distribution density of the moving point _Pn is obtained in the same manner, the optimum application angle of the force F is determined in consideration of the difference in the spring coefficient, and the stretching angle α is set.

[0041]

[Effect of the Invention] As described above, in the present invention, regardless of whether the horizontal or vertical installation mode is adopted, external force such as vibration and impact generated by running the vehicle is prevented. The vibration is efficiently absorbed by the elastic deformation of the vibration spring, and the vibration propagation to the floating-supported playback apparatus main body is suppressed. And horizontal or vertical,
Furthermore, since it is not necessary to change the direction in which the vibration isolating springs are stretched in accordance with a free installation angle in the range of 0 to 90 degrees, the installation operation itself is simple and reliable. In this way, according to the present invention, a magazine storage / reproducing apparatus capable of performing high-quality reproduction for a long period of time without causing a trouble such as a failure or a malfunction is obtained.

[Brief description of the drawings]

FIG. 1 is an anti-vibration support mechanism of a magazine storage / reproduction device proposed by the present inventors.

FIG. 2 is a schematic side view of a magazine storage / reproduction device having a vibration isolating support mechanism according to the first embodiment of the present invention.

FIG. 3 shows the vibration-proof support mechanism

FIG. 4 is an anti-vibration support mechanism incorporating an anti-vibration spring in which a pair of springs are connected.

FIG. 5 shows a state where the connecting point of the spring of FIG. 4 is displaced;

[FIG. 6] A locking portion that holds an anti-vibration spring by holding an asobi.

FIG. 7 is a schematic side view of a magazine storage / reproduction device provided with a vibration isolation support mechanism according to a second embodiment.

FIG. 8 shows the vibration-proof support mechanism.

FIG. 9 is a diagram for explaining the determination of the stretching angle α.

FIG. 10 shows a state where a force is applied to a connection point of a horizontally arranged spring.

FIG. 11 is a diagram showing a distribution of coarse and fine movement points.

[Explanation of symbols]

10 reproduction apparatus main body 15 (the tip of the locking projection) hook 20 the outer casing 25a, 25b engaging section 30 vibration isolation mechanism 31a, 31b vibration isolating springs _{31a 1, 31a 2, 31b 1} , 31b 2 springs α Zhang angle at which

Continuing on the front page (72) Inventor Fumiya Yamada 25-1, Nishimachi, Yamada-shi, Kawagoe-shi, Saitama Prefecture Pioneer Corporation Kawagoe Factory (72) Inventor Kiyoto Kajiwara 25-1, Nishi-machi, Yamato, Kawagoe-shi, Saitama Pioneer stock (56) References JP-A-4-103089 (JP, A)

Claims (2)

(57) [Scope of request for utility model registration] 1. A supporting device for elastically supporting the playback device main body inside an outer casing by vibration isolation mechanisms provided on both sides of the playback device main body, wherein the vibration isolation mechanism protrudes from a side surface of the playback device main body. Locking projections, two locking portions formed on the inner side wall of the outer casing, and a pair of anti-vibration springs extending between the locking projections and the locking portions and extending in different directions from each other. Wherein one of the vibration-proof springs absorbs vibration in the thickness direction of the reproducing apparatus main body, and the other vibration-proof spring absorbs vibration in the depth direction of the reproducing apparatus main body. Anti-vibration support mechanism. 2. A supporting device for elastically supporting the playback device main body inside an outer casing by vibration isolation mechanisms provided on both sides of the playback device main body, wherein the vibration isolation mechanism projects from a side surface of the playback device main body. A locking projection, two locking portions formed on the inner side wall of the outer casing, and a pair of anti-vibration springs stretched between the locking projection and the locking portion. An anti-vibration support mechanism for a reproducing apparatus, wherein an extension angle of the anti-vibration spring is set so that a region where the locking projection moves when the direction changes is reduced.