JP2000291739A - Vibration isolating support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolating support device as a single part by reducing a cost while the device can be easily mounted in a short time with no troublesome screw tightening work required, in the vibration isolating support device connecting a support frame and a chassis of an optical recording and reproducing device. SOLUTION: This device comprises a damper 3 having elasticity interposed between a mounting part 1 in a support frame side and a mounting part 2 in a chassis side and a support body 6 positioning the damper 3. The support body 6 is provided with a shaft part 61, engaging part 62 fixed by only inserting to a mounting port 14 of the mounting part 1, and a brim part 63 holding the damper 3 interposed in cooperation with the mounting part 1. The damper 3 has hollow swollen parts 32, 33 and a hold part 34 for holding the mounting part 2. The support body 6 is formed by an integral molded unit of synthetic resin, or the damper and support body are formed by an integral molded body of rubber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration support device, and more particularly, to a method for connecting two members such as a support frame and a chassis of an optical recording / reproducing device (optical disc recording / reproducing device) to one side member. The present invention relates to an anti-vibration support device used to suppress transmission of vibration to another member.

[0002]

2. Description of the Related Art In an optical recording / reproducing apparatus for use in a vehicle or in a portable device, it is required that a reading error or a writing error caused by the vibration be prevented by suppressing the vibration of a functional section equipped with a pickup. You. For this reason, for example, the above-described anti-vibration support device is employed at a connection portion between an optical recording / reproducing device and a fixed side support frame forming a housing and a chassis to which a functional unit having a pickup is mounted.

A technique which can be used for the above-mentioned joint is disclosed in Japanese Patent Application Laid-Open
-37375, JP-A-8-63552, JP-A-9-303458, JP-A-10-47401
No., etc. The technology described in each of these publications uses a rubber damper.

Among them, Japanese Patent Application Laid-Open No. 7-37375,
JP-A-8-63552 and JP-A-10-4740
The technique described in Japanese Patent Publication No. 1 (1995) discloses a technique in which the vibration of the support member is hardly transmitted to the frame by holding the frame at an intermediate portion in the vertical direction of a damper sandwiched between upper and lower fixed side support members such as a casing. It is.
Further, the projection provided on the support member is inserted into the damper to position the damper. In contrast, Japanese Patent Application Laid-Open
Although the technology described in JP-A-303458 is common to the former three in that a frame is held at a longitudinally intermediate portion of the damper, the damper is added to the housing base and its base. The difference is that it is clamped by a resin damper fixing device attached to a metal pin that is fastened and fixed.

On the other hand, FIG. 9 is a sectional view showing an example of use of a conventional anti-vibration support device A, and FIGS. 10 and 11 show a mounting portion 1 of a support frame, which is one side member, and the other side member, respectively. The mounting part 2 of the chassis is shown.

[0009] The anti-vibration support device A of FIG. 9 has a rubber damper 3 and a metal mounting screw 5. The damper 3 includes a through hole 31, two hollow bulges 32 and 33 arranged in the longitudinal direction thereof, and a concave holding part formed between the upper and lower two bulges 32 and 33. 34, and a seat 35 formed by one end in the vertical direction. Then, the seat portion 35 is provided with the screw hole 12 provided in the mounting portion 1.
On the other hand, the holding portion 34
The engagement opening 21 provided in the mounting portion 2 is fitted to the outside, and the mounting portion 2 is held in a state of being sandwiched by the two bulging portions 32 and 33. Note that, as clearly shown in FIG. 11, the mounting portion 2 is formed with an insertion opening 22 that is connected to the engagement opening 21. On the other hand, the mounting screw 5 is attached to the shaft 5 inserted into the through hole 31 of the damper 3.
1 and a small-diameter screw portion 52 integrally connected to one end of the shaft portion 51 and screwed into the screw hole 12 of the mounting portion 1.
And a flange-shaped head 53 integrally connected to the other end of the shaft portion 51 and cooperating with the mounting portion 1 of the support frame to clamp the damper 3.

According to the anti-vibration support device A, the damper 3 is positioned via the shaft portion 51 of the mounting screw 5, and at the same time, the entire damper 3 is clamped by the mounting portion 1 and the flange 53 of the mounting screw 5. Since vertical movement is prevented,
The vibration of the support frame provided with the mounting portion 1 is absorbed by the expansion and contraction and elastic deformation of the upper and lower bulging portions 32 and 33 of the damper 3 in the vertical and horizontal directions. Vibration is less likely to be transmitted to the chassis provided with 2. Therefore, even if the functional unit having the pickup mounted on the chassis having the mounting unit 2 is mounted, the vibration of the functional unit is suppressed, and the reading error and the writing error are less likely to occur.

[0008]

However, in the conventional anti-vibration support apparatus A described with reference to FIG. 9, the distance between the mounting portion 1 and the head 53 of the mounting screw 5, that is, the overall height of the damper 3, is properly determined. In addition, since a relatively expensive mounting screw 5 having a function of restricting the screw-in allowance is used, the cost is high, and a cumbersome screw tightening operation of screwing the mounting screw 5 into the screw hole 12 is required. The mounting time of the anti-vibration support device A is longer, and the mounting screws 5 are made of metal, so that it is difficult to reduce the weight. These problems cannot be solved at all by the techniques described in the above publications.

The present invention has been made under the above circumstances.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an anti-vibration support device which can be easily mounted in a short time without requiring a troublesome screw tightening operation such as screwing a mounting screw into a screw hole.

Another object of the present invention is to provide an inexpensive anti-vibration support device in which an inexpensive synthetic resin support can be used in place of the mounting screw.

Further, according to the present invention, a damper and a support for positioning the damper are integrated,
It is an object of the present invention to provide an anti-vibration support device that can be handled as a single component.

Further, the present invention can be used not only for the connecting portion between the support frame of the optical recording / reproducing apparatus and the chassis on which the functional portion having the pickup is mounted, but also for the connecting portion of the other two members. It is an object to provide a vibration isolating support device that can be used.

[0014]

An anti-vibration support device according to the present invention is an anti-vibration support device used for connecting two members, and has elasticity interposed between one side member and the other side member. And an engaging portion which is fixed to the one-side member by positioning the damper and being inserted into the mounting hole of the one-side member to clamp the edge of the mounting port on both sides thereof. And a support. Here, for example, a support frame of an optical recording / reproducing device is selected as the one-side member, and a chassis to which a functional unit having a pickup of the optical recording / reproducing device is mounted is selected as the other-side member.

According to this vibration isolating support device, the engaging portion of the support for positioning the damper is inserted into the mounting opening of the one-side member, and the edge of the mounting opening is clamped on both sides thereof so as to be positioned on one side. Since it is fixed to the member, it is not necessary to perform a time-consuming and cumbersome screw tightening operation such as screwing a mounting screw into a screw hole as in the related art, and the mounting workability is improved accordingly.

The engaging portion includes a pair of engaging surfaces respectively overlapping on both sides of the rim of the mounting port, a recess formed between the engaging surfaces to receive the rim, It is possible to adopt a configuration having a split groove for dividing the engaging portion into a plurality of resilient claws. With this configuration of the engaging portion, the rim of the mounting opening received in the recess is sandwiched between the pair of engaging surfaces, so that high mounting reliability is obtained. Further, since the engaging portion is divided into a plurality of resilient claws by the split groove, the operation of inserting the engaging portion into the mounting opening can be performed easily and smoothly.

The support is provided with a shaft provided in a through hole provided in the damper, the engaging portion provided on one end of the shaft, and the other end provided on the other end of the shaft. Further, it is desirable to have a flange portion for holding the damper in cooperation with the one side member. If it looks like this,
The shaft portion helps to position the damper while preventing lateral displacement thereof, and the collar portion cooperates with the one-side member to help maintain the overall height of the damper properly.

The damper is formed between the through hole, a plurality of hollow bulges arranged in the longitudinal direction thereof, and two adjacent bulges adjacent to each other. It is desirable to have a recessed holding portion for holding the portion by being sandwiched between the bulging portions, and a seating portion to be placed on the rim of the mounting port. Such a damper is shown in FIG.
The same action as that of the damper 3 described above is exerted. Therefore, a vibration damping action comparable to that of the conventional vibration damping support device A is exhibited.

It is desirable that the support is formed of an integrally molded synthetic resin having the shaft, the engagement portion, and the flange. Further, the damper and the support may be formed as an integral molded body of rubber. If the support is formed of a synthetic resin integrally molded body, the weight of the anti-vibration support device is reduced as compared with the case where a metal mounting screw is used as in the related art. In addition, if the damper and the support are formed as an integral molded body of rubber, the vibration isolating support device can be handled as a single component, and not only the damper but also the support is protected by the rubber elasticity. The vibration effect is exhibited, and as a whole, the vibration damping effect is remarkably exhibited.

In the case where the damper and the support are formed of an integrally molded body of rubber, one end of the damper is the seat portion mounted on the edge of the mounting port, and the seat portion is An inner peripheral portion and an outer peripheral surface on one end side of the shaft portion are continuously provided through a continuous portion thinner than the seat portion, and the other end portion of the damper overlaps a lower surface of the flange portion. Can be adopted. The anti-vibration support device having this configuration can be formed without difficulty in forming technology. This point will be specifically clarified by the description of the following embodiment.

[0021]

FIG. 1 is a front view, partially cut away, showing an embodiment of an anti-vibration support device A according to the present invention.

As shown in FIG. 1, the anti-vibration support device A includes a rubber damper 3 and a support 6 formed of an integrally molded synthetic resin. The damper 3 has the same shape and configuration as those used in the conventional anti-vibration support device A described in FIG. That is, a through hole 31, two upper and lower hollow bulges 32 and 33 arranged vertically,
It has a concave holding portion 34 formed between the two bulging portions 32 and 33, and a seating portion 35 formed by one end in the vertical direction. On the other hand, the support 6 is
1, an engaging portion 62 provided on one end of the shaft portion 61, and a flange portion 63 provided on the other end of the shaft portion 61. Since this support 6 is formed of an integral molded body of synthetic resin, it is lighter in weight than the metal mounting screw 5 described with reference to FIG.

As shown in FIG. 1 in a partially enlarged manner, the above-mentioned engaging portion 62 has an interval dimension which is the same as or slightly shorter than the thickness of the mounting portion 1 on the support frame side described in FIG. A pair of ring-shaped engaging surfaces 64 and 65 opposed to each other with a space therebetween.
And a ring-shaped recess 66 formed between the engagement surfaces 64, 65.
2 has a split groove 68 dividing the pair of claw pieces 67, 67. In this embodiment, the upper engagement surface 64
Is formed by the lower end surface of the shaft portion 61. Also,
The pair of claw pieces 67, 67 are formed as guide surfaces 69 whose outer surfaces are tapered and tapered.

The anti-vibration support device A is mounted on the mounting portion 1 of a support frame as one side member shown in a plan view in FIG. As shown in the drawing, the mounting portion 1 has only a mounting hole 14 formed of a round hole, and it is not necessary to form the screw hole 12 as in the mounting portion 1 described with reference to FIG. Therefore, the manufacture of the mounting portion 1 becomes easier accordingly. The diameter of the mounting opening 14 is equal to the diameter of the back wall of the recess 66 described with reference to FIG. Further, the mounting portion 2 of the chassis as the other side member has the same configuration as that described in FIG. The anti-vibration support device A is used to connect the mounting portion 1 of the support frame which is one side member and the mounting portion 2 of the chassis which is the other side member.

FIG. 2 is a longitudinal sectional front view showing a use state used for coupling the mounting portion 1 and the mounting portion 2.

As shown in the figure, the seating portion 35 of the damper 3 is placed on the rim 15 of the mounting opening 14 of the mounting portion 1. The shaft portion 61 of the support 6 is inserted into the through hole 31 of the damper 3, and is provided in the engaging portion 62 of the support 6 inserted into the mounting opening 14 of the mounting portion 1. A pair of engaging surfaces 64 and 65 are respectively overlapped on the upper and lower sides of the lip 15 so that the lip 15 is held between the upper and lower sides without play. The edge 15 is in contact with the back wall of the recess 66 without rattling. Further, the damper 3 is held in a state in which the damper 3 does not rattle in the vertical direction due to the cooperation of the attachment portion 1 of the support frame and the flange 63 of the support 6.

In this way, the vibration isolating support device A is
, The damper 3 is positioned by the support 6 so as not to be displaced in the vertical and horizontal directions. Holding part 3 of damper 3 positioned in this way
4, the engagement opening 21 provided in the mounting portion 2 is fitted to the outside, and the mounting portion 2 is held by the two bulging portions 32 and 33 without being rattled.

The mounting structure described with reference to FIG.
Is attached to the mounting portion 1 and the holding portion 3 of the damper 3
4, the lower bulging portion 32 of the damper 3 is interposed between the mounting portion 1 on the support frame side and the mounting portion 2 on the chassis side. Part 33
Is interposed between the mounting portion 2 on the chassis side and the flange 63 of the support 6. Therefore, the vibration of the support frame is absorbed by the expansion and contraction and elastic deformation of the upper and lower bulging portions 32 and 33 of the damper 3 in the vertical and horizontal directions, and the mounting portion 2 is provided from the support frame side having the mounting portion 1. Vibration is hardly transmitted to the chassis side. Therefore, the mounting portion 2
Even if a functional unit having a pickup is mounted on a chassis equipped with the above, vibration of the functional unit is suppressed, and reading errors and writing errors are less likely to occur.

Next, an example of a mounting procedure will be described. When mounting the anti-vibration support device A on the mounting portion 1, the damper 3
After placing the seating portion 35 on the rim 15 of the mounting opening 14 of the mounting portion 1 and inserting the shaft portion 61 of the support 6 into the through hole 31 of the damper 3 in an arbitrary order, , Support 6
Insert the engaging portion 62 into the mounting opening 14 and
The edge 15 of the damper 3 is overlapped with the flange 63 of the support 6 by holding the edge 15. Further, the holding portion 34 of the damper 3 is engaged with the engagement opening 21 through the opening 22 of the mounting portion 2. According to this procedure, it is not necessary to perform time-consuming and troublesome work such as screw tightening. In addition, since the engaging portion 62 is divided into a pair of elastic claws 67, 67, the operation of inserting the engaging portion 62 into the mounting opening 14 utilizes the elasticity of the claws 67, 67. It is performed easily, smoothly and in a short time. Nail pieces 67, 6
The fact that the guide surface 69 is provided on 7 also helps to perform the insertion work reliably in a short time.

FIG. 3 is a longitudinal sectional front view showing another embodiment of the anti-vibration support device A according to the present invention, FIG. 4 is a plan view of the anti-vibration support device A, and FIG. FIG.

In this anti-vibration support apparatus A, the support 7 is formed of rubber, and the support 7 is provided with a damper 8.
1 and 2 in that they are formed as an integral molded body of rubber.

The support 7 has the same elements as those of the support 6 described in FIG. 1 in the same form. That is, the support 7 includes the shaft 71 and the engaging portion 72.
, A flange 73, a pair of engagement surfaces 74 and 75, and a recess 76.
, A pair of claw pieces 77, 77, a split groove 78, and guide surfaces 79, 79 are provided in the same form. The damper 8 also has the same elements as those provided in the damper 3 described with reference to FIG. That is, the damper 8
Has a through hole 81 and two bulging portions 8 arranged in the vertical direction.
2, 83, a holding portion 84, and a seating portion 85. Of these, the bulging portions 82, 83, the holding portion 84, and the seating portion 85 are provided in the damper 3 described with reference to FIG. Although they have the same form as those described above, the through-hole portion 81 is formed by the seating portion 85 that continuously connects the inner peripheral portion of the seating portion 85 and the outer peripheral surface on one end side of the shaft portion 71 of the support 7. Is also closed by a thin ring-shaped connecting portion 86. The other end of the damper 3 overlaps the lower surface of the flange 73 of the support 7.

FIG. 6 is a longitudinal sectional front view showing a use state in which the anti-vibration support device A described with reference to FIGS. 3 to 5 is used for coupling the mounting portion 1 on the support frame and the mounting portion 2 on the chassis. is there. Each of the mounting portions 1 and 2 has the same configuration as that described in FIG.

When attaching the vibration isolating support device A to the mounting portion 1 on the support frame side, the engaging portion 72 protruding downward from the damper 8 is inserted into the mounting opening 14 of the mounting portion 2 and the opening is formed by the engaging portion 72. The edge 15 is clamped. In this way, the seating portion 85 of the damper 8 is placed on the rim 15 of the mounting opening 14, and at the same time, the damper 8 is vertically moved by the cooperation of the mounting portion 1 of the support frame and the flange 73 of the support 7. It is pinched without rattling in the direction. The procedure for attaching the attachment section 2 to the holding section 84 of the damper 8 is the same as that described with reference to FIG.

When the anti-vibration support device A is mounted in this manner, the lower bulging portion 82 of the damper 8 is connected to the mounting portion 1 on the support frame side and the mounting portion on the chassis side in the same manner as described above with reference to FIG. The upper bulging portion 83 is interposed between the mounting portion 2 on the chassis side and the flange portion 73 of the support 7. Therefore, the vibration of the support frame having the mounting portion 1 is absorbed by the expansion and contraction and elastic deformation of the upper and lower bulging portions 82 and 83 of the damper 8 in the vertical and horizontal directions, and from the support frame side having the mounting portion 1. Vibration is hardly transmitted to the chassis provided with the mounting portion 2. Therefore, even if the functional unit having the pickup mounted on the chassis having the mounting unit 2 is mounted, the vibration of the functional unit is suppressed, and the reading error and the writing error are less likely to occur. Other items are the same as those described in FIG.

The anti-vibration support device A described with reference to FIG. 3 can be molded without any difficulty in molding technology by employing the molding method described below. FIG. 8 is a longitudinal sectional front view showing the shape of the vibration isolating support device A which has been released after the molding is completed. As can be seen from the figure, at the time of completion of the molding, the damper 8 in the inverted state is continuously provided at the lower end of the support 7 via the continuous portion 86. In the anti-vibration support device A formed in this shape, after the mold release, the damper 8 is inverted as shown by the arrow a so as to wrap the support 7, and the anti-vibration support device A having the shape shown in FIG. 3 is obtained. Therefore, the other end of the damper 8 may be overlapped with the lower surface of the flange 73 of the support 7 as shown in FIG. Anti-vibration support device A shown in FIG.
Has a shape that is compatible with the integral molding of rubber, and taking into account that the entirety is molded of rubber does not cause a situation in which mold release becomes difficult.

The anti-vibration support device A described in the two embodiments described above is connected to the support frame of the optical recording / reproducing device and the chassis to which the functional unit having the pickup of the optical recording / reproducing device is mounted. In the case of adoption, the anti-vibration support device A is provided with mounting portions 1 provided at three or four positions of the support frame and three or four positions of the chassis.
It is desirably used at a connection point with the mounting portion 2 provided at the position. In such a case, the chassis is connected to the support frame by only three or four vibration isolation support devices A. Therefore, the vibration transmission path from the support frame to the chassis is interrupted by the plurality of vibration isolation support devices A that exhibit a vibration absorbing effect. The anti-vibration support device A is not limited to the case where the chassis is coupled to the support frame of the optical recording / reproducing device, and can be adopted for use in interrupting a vibration transmission path in other electric devices and the like. is there.

[0038]

As described above, according to the present invention, it is possible to provide an anti-vibration support device which can be easily mounted in a short time and which can achieve a reduction in cost and weight.
Further, according to the present invention, it is possible to provide an anti-vibration support device that can be handled as a single component. Further, according to the present invention, it can be used not only for the connecting portion between the support frame of the optical recording / reproducing apparatus and the chassis on which the functional portion having the pickup is mounted, but also for the connecting portion of the other two members. Thus, it is possible to provide a vibration isolating support device.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of an anti-vibration support device according to the present invention.

FIG. 2 is a longitudinal sectional front view of the use state of the anti-vibration support device of FIG. 1;

FIG. 3 is a vertical sectional front view showing another embodiment of the vibration isolating support device according to the present invention.

FIG. 4 is a plan view of the anti-vibration support device of FIG. 3;

FIG. 5 is a bottom view of the anti-vibration support device of FIG. 3;

6 is a vertical sectional front view of the use state of the vibration isolating support device of FIG. 3;

FIG. 7 is a plan view of a mounting portion on a support frame side which is one side member.

8 is a vertical sectional front view showing a shape immediately after release when the anti-vibration support device of FIG. 3 is molded from rubber.

FIG. 9 is a cross-sectional view of a usage example of a conventional anti-vibration support device.

FIG. 10 is a plan view of a mounting portion on a support frame side which is one side member used in combination with the anti-vibration support device of FIG. 9;

FIG. 11 is a plan view of a mounting portion on the chassis side, which is the other side member.

[Explanation of symbols]

 A Vibration-proof support device 1 Mounting portion (mounting portion for one side member) 2 Mounting portion (mounting portion for other side member) 3,8 Damper 6,7 Support body 14 Mounting port 15 Edge 31,81 Through hole 32, 33, 82, 83 Swelling part 34, 84 Retaining part 35, 85 Seating part 61, 71 Shaft part 62, 72 Engaging part 63, 73 Flange part 64, 65, 74, 75 Engaging surface 66, 76 Recess 67 , 77 Claw piece 68, 78 Split groove 86 Continuous portion

Claims (8)

[Claims] 1. An anti-vibration support device used for connecting two members, comprising: a damper having elasticity interposed between one side member and the other side member; A support having an engagement portion which is fixed to the one-sided member by being inserted into the mounting opening of the member and sandwiching the rim of the mounting opening on both sides thereof. apparatus. 2. A pair of engagement surfaces, each of which overlaps on both sides of an edge of the mounting opening, and a recess formed between the engagement surfaces to receive the edge. The anti-vibration support device according to claim 1, further comprising a split groove for dividing the engaging portion into a plurality of resilient claws. 3. A shaft provided in the through hole provided in the damper, the engaging portion provided at one end of the shaft, and the other end of the shaft. The vibration isolating support device according to claim 1, further comprising a flange portion provided on the first member to hold the damper in cooperation with the one side member. 4. The damper is formed between the through hole, a plurality of hollow bulges arranged in a vertical direction, and two adjacent bulges, and the other side member has The anti-vibration support device according to claim 3, further comprising: a concave holding portion that holds the mounting portion by being sandwiched by the bulging portions; and a seating portion that is mounted on an edge of the mounting port. 5. The anti-vibration support device according to claim 3, wherein the support is an integrally molded synthetic resin having the shaft, the engagement portion, and the flange. 6. The anti-vibration support device according to claim 1, wherein the damper and the support are formed of an integrally molded body of rubber. 7. The damper and the support are integrally formed of rubber, and one end of the damper is the seat portion mounted on the edge of the mounting port, and the inner periphery of the seat portion. 4. An outer peripheral surface on one end side of the shaft portion and an outer peripheral surface on one end side of the shaft portion are connected to each other via a connecting portion thinner than the seating portion, and the other end portion of the damper overlaps a lower surface of the flange portion. Alternatively, the anti-vibration support device according to claim 4. 8. The optical recording / reproducing apparatus according to claim 1, wherein the one side member is a support frame of an optical recording / reproducing apparatus, and the other side member is a chassis to which a functional unit having a pickup of the optical recording / reproducing apparatus is mounted. An anti-vibration support device according to claim 7.