JP3384356B2 - Anti-vibration support device - Google Patents

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 combination of two members such as a support frame and a chassis of an optical recording / reproducing device (optical disc recording / reproducing device) and a member on one side. The present invention relates to an anti-vibration support device used for suppressing the transmission of vibration to the other member.

[0002]

2. Description of the Related Art In an optical recording / reproducing apparatus for a vehicle or a portable device, it is required to prevent a read error or a write error from occurring due to vibration by suppressing a vibration of a functional unit having a pickup. It For this reason, the anti-vibration supporting device is adopted in a connecting portion of the optical recording / reproducing device, for example, a fixed side supporting frame forming a casing and a chassis to which a functional part mounting a pickup is assembled.

A technique that can be used for the above-mentioned connecting portion is disclosed in Japanese Laid-Open Patent Publication No.
-37375, JP-A-8-63952, JP-A-9-303458, and JP-A-10-47401.
It is described in the official gazette. The techniques described in each of these publications all use rubber dampers.

Among them, Japanese Patent Laid-Open No. 37375/1995,
JP-A-8-63952 and JP-A-10-4740.
The technique disclosed in Japanese Patent Publication No. 1 makes it difficult to transmit the vibration of the support member to the frame by holding the frame at an intermediate portion in the vertical direction of a damper sandwiched by upper and lower fixed side support members such as a casing. Is.
Further, the protrusion provided on the support member is inserted into the damper to position the damper. Against these,
Although the technique disclosed in Japanese Patent Laid-Open No. 303458 is common to the former three in that the frame is held at the longitudinal 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. 7 shows a cross-sectional view of an example of use of the conventional anti-vibration support device A, and FIGS . 8 and 9 show the mounting portion 1 and the other side member of the support frame which are one side member, respectively . The mounting portion 2 of the chassis is shown.

The anti-vibration support device A shown in FIG . 7 has a rubber damper 3 and a metal mounting screw 5. The damper 3 includes a through hole portion 31, two hollow bulging portions 32 and 33 arranged in the vertical direction, and a concave holding portion formed between the upper and lower two bulging portions 32 and 33. 34 and a seating portion 35 formed by one end portion in the vertical direction. The seat portion 35 has the screw hole 12 provided in the mounting portion 1.
While being placed on the rim 13 of the
The engagement opening portion 21 provided in the mounting portion 2 is externally fitted, and the mounting portion 2 is held in a state of being sandwiched by the two bulging portions 32 and 33. As clearly shown in FIG. 9 , the attachment portion 2 is formed with an insertion opening 22 connected to the engagement opening portion 21. On the other hand, the mounting screw 5 has the shaft portion 51 that is inserted into the through hole portion 31 of the damper 3.
And a small-diameter screw portion 52 that is integrally connected to one end portion of the shaft portion 51 and is screwed into the screw hole 12 of the mounting portion 1,
A collar-shaped head portion 53 is provided integrally with the other end portion of the shaft portion 51 and cooperates with the mounting portion 1 of the support frame to hold the damper 3 therebetween.

According to this anti-vibration support device A, the damper 3 is positioned through the shaft portion 51 of the mounting screw 5, and at the same time, the entire damper 3 is held by the holding structure between the mounting portion 1 and the collar portion 53 of the mounting screw 5. Since vertical movement is blocked,
Vibration of the support frame having the mounting portion 1 is absorbed by 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 frame is provided from the side of the supporting frame. Vibration is less likely to be transmitted to the chassis side equipped with 2. Therefore, even if the functional unit including the pickup is mounted on the chassis having the mounting unit 2, 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 device A described in FIG. 7 , in order to properly determine the distance between the mounting portion 1 and the head portion 53 of the mounting screw 5, that is, the overall height of the damper 3. In addition, since the relatively expensive mounting screw 5 having the regulation function of the screwing allowance is used, the price is high, and the troublesome screw tightening work of screwing the mounting screw 5 into the screw hole 12 is required. There is a problem in that it takes a long time to attach the anti-vibration supporting device A and it is difficult to reduce the weight because the attaching screw 5 is made of metal. These problems cannot be solved at all by the techniques described in the publications listed above.

The present invention has been made under the above circumstances.

An object of the present invention is to provide an anti-vibration support device which can be easily installed in a short time without requiring a troublesome screw tightening work such as screwing a mounting screw into a screw hole.

Further, the present invention is to so may use inexpensive supporting lifting member in place of the mounting screws, and an object thereof is to provide a Price Low vibration isolation support system.

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

[0013]

A vibration-isolating support device according to the present invention is a chassis to which a one-sided member as a support frame of an optical recording / reproducing device and a functional part having a pickup of the optical recording / reproducing device are assembled. And the other member of
Consisting of an elastic damper interposed between and a support for positioning this damper, wherein the support is
A shaft portion provided in the through hole portion provided in the damper,
An engaging portion provided on one end side of the shaft portion, inserted into the mounting opening of the one side member, and fixed to the one side member,
The damper is provided on the other end side of the shaft portion and
And a flange portion that cooperates with the side member to clamp the damper.
Is the above-mentioned through hole and a plurality of hollow bulging parts lined up in the vertical direction
And formed between the two adjacent bulges.
The mounting part of the other side member is clamped by those bulges.
And holding it in a concave shape and the mounting edge
A vibration-damping support device and a seat portion which is location, the
The damper and the support are made of a rubber molded body,
One end of the damper is used as the seating part, and the seating part
The inner peripheral portion and the outer peripheral surface on one end side of the shaft portion are closer to each other than the seating portion.
Is also connected through a thin connecting part, and the other end of the damper
Part overlaps the lower surface of the collar part, and
The one-piece molded body is turned upside down at the lower end of the support through the above-mentioned connecting portion.
I will wrap the support with the above dampers that are arranged in a row
And then place the other end of the damper on the lower surface of the collar.
It will come together .

[0014] According to the vibration-damping support device, the engaging portion of the support for positioning the damper, inserted into the mounting opening of one side member of the support frame of the optical recording and reproducing apparatus
Since so as to be fixed to one side member of that, it is not necessary to the conventional mounting screws as performing such troublesome screwing operation of time such as screwing into the threaded hole,
The workability of mounting is improved accordingly. Also,
The support body is provided with a shaft portion provided in a through hole portion provided in the damper, the engagement portion provided on one end side of the shaft portion, and the other end side of the shaft portion. the damper cooperates with the one side member of and a flange portion for clamping
Thus, the shaft portion helps prevent lateral displacement of the damper for positioning, and the collar portion cooperates with the one side member to help maintain the overall height of the damper appropriately.

Further, the damper includes the through hole portion,
A plurality of hollow bulging portions arranged in the vertical direction and two adjacent bulging portions are formed between the two adjacent bulging portions, and the mounting portion of the other-side member is sandwiched and held by the bulging portions. Since it has the recessed holding portion and the seating portion placed on the edge of the mounting opening, the same operation as the damper 3 described in FIG. 7 is exhibited. Therefore, the conventional anti-vibration support device A
Demonstrate the same anti-vibration effect.

Further, since the damper and the support are formed as an integrally molded body of rubber , the vibration-proof support device can be handled as a single part, and
Not only the damper but also the support body exerts a vibration damping effect due to its rubber elasticity, so that the vibration damping effect becomes remarkable as a whole.

[0017] Then, the the present invention, is formed with a damper and a support integrally molded body of rubber, its integrally formed
The shape is turned upside down on the lower end of the support through the above-mentioned connecting portion.
The dampers connected to the
Roll it over and place the other end of the damper on the lower surface of the collar.
Therefore, molding can be performed without difficulty in molding technology.
Wear. Moreover, vibration-damping support device compared with the case of using a conventional metal mounting screws as is lightweight, addition, it is possible to provide a Price Low vibration isolation support system.

In the present invention, the engaging portion is the mounting port.
Overlap each side of the lip and separate the lip of the mounting opening.
A pair of engaging surfaces that are sandwiched on both sides of the
A recess formed between them to receive the rim,
First, it is desirable to have a split groove that divides the engaging portion into a plurality of elastic claw pieces .

According to this, the rim of the mounting opening received in the recess is clamped by the pair of engaging surfaces, and high mounting reliability is obtained. Further , the engaging portion has a split groove for dividing the engaging portion into a plurality of elastic claw pieces .
Thus, the work of inserting the engaging portion into the mounting port can be performed easily and smoothly.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG . 1 is a vertical sectional front view showing an embodiment of an anti-vibration support device A according to the present invention, FIG. 2 is a plan view of the anti-vibration support device A, and FIG. It is a bottom view of A.

In this anti-vibration support device A, the support 7 is made of rubber, and the support 7 has a damper 8
Together with this, it is formed as an integrally molded body of rubber .

The damper 8 has the same shape or configuration as that used in the conventional vibration-damping support device A described in Fig. That is, the damper 8 has a through hole 81.
And two bulging portions 82 and 83 arranged in the vertical direction, a holding portion 84, and a seating portion 85. Of these, the bulging portions 82 and 83, the holding portion 84, and the seating portion 85 are Although it has the same form as those provided in the damper 3 described with reference to FIG.
5 is different in that it is closed by a ring-shaped connecting portion 86 that is thinner than the seating portion 85 that connects the inner peripheral portion of 5 and the outer peripheral surface on one end side of the shaft portion 71 of the support body 7. There is. Further, the other end of the damper 3 overlaps the lower surface of the flange 73 of the support 7. On the other hand, the support body 7 includes a shaft portion 71,
The engaging portion 72 provided on one end side of the shaft portion 71 , and the shaft portion 71
Is integrally provided with the collar portion 73 provided on the other end side of the .
As shown partially enlarged in FIG.
Is the same as the wall thickness of the mounting part 1 on the support frame side
A pair of phosphorus facing each other with a spacing dimension slightly shorter than
Engaging surfaces 74, 75 and the engaging surfaces 74, 75
And a ring-shaped recess 76 formed between the
And the engaging portion 72 is divided into a pair of claw pieces 77, 77.
It has a dividing groove 78 for dividing. In this embodiment
The upper engagement surface 74 is formed by the lower end surface of the shaft portion 71.
Has been formed. Also, the pair of claw pieces 77, 77 is
The surface is formed as a tapered guide surface 79.
It The support 7 is lighter than the metal mounting screw 5.
It

FIG . 4 is a vertical sectional front view showing a state in which the anti-vibration supporting device A described with reference to FIGS. 1 to 3 is used for connecting the mounting portion 1 on the supporting frame side and the mounting portion 2 on the chassis side. is there.

As shown in FIG . 5, the mounting portion 1 is only provided with a mounting hole 14 which is a round hole, and it is necessary to open the screw hole 12 like the mounting portion 1 described in FIG. There is no. Therefore, the manufacturing of the mounting portion 1 becomes easier accordingly. The diameter of the mounting port 14 is the same as the diameter of the inner wall of the recess 76 described in FIG. The mounting portion 2 of the chassis as the other-side member has the same structure as that described in FIG. The anti-vibration supporting 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.

When the anti-vibration support device A is attached to the mounting portion 1 on the support frame side, the engaging portion 72 projecting downward of the damper 8 is inserted into the mounting opening 14 of the mounting portion 2 and the engaging portion 72 is used. both the edge 15 is clamped, taken
The holding portion 84 of the damper 8 is engaged through the opening 22 of the attachment portion 2.
Engage with the abutment portion 21. Follow this procedure to tighten the screws
There is no need to perform time-consuming and troublesome work such as. Shi
Also, the engaging portion 72 has a pair of elastic claw pieces 77, 77.
Since it is divided into
The elasticity of these claw pieces 77, 77 is utilized for the work of inserting.
Easy, smooth and reliable in a short time. Claw 77,
77 is equipped with a guide surface 69, so it is possible to insert
Help to do in a short time and surely.

In this way, the seating portion 8 of the damper 8 is
5 is placed on the rim 15 of the mounting opening 14, and at the same time, the damper 8 is mounted on the mounting portion 1 of the support frame and the collar portion 73 of the support body 7.
It is clamped in a state that it does not rattle in the vertical direction in cooperation with.

[0027] Thus the vibration-damping support device A is attached, is interposed between each other and the mounting portion 2 protruding portion 82 of the lower side of the mounting portion 1 and the chassis side of the support frame side of the dampers 8, The bulged portion 83 on the upper side is in a state of being interposed between the mounting portion 2 on the chassis side and the collar portion 73 of the support body 7. Therefore, the vibration of the support frame provided with the mounting portion 1 is absorbed by the vertical and horizontal expansion and contraction and elastic deformation of the upper and lower bulging portions 82, 83 of the damper 8, and from the side of the support frame provided with the mounting portion 1. Vibration is less likely to be transmitted to the chassis side having the mounting portion 2. Therefore, even if the functional unit including the pickup is mounted on the chassis having the mounting unit 2, the vibration of the functional unit is suppressed, and the reading error and the writing error are less likely to occur.

The vibration-damping support device A described with reference to FIG . 1 can be molded without any difficulty in molding technology by adopting the molding method described below. FIG. 6 is a vertical sectional front view showing the shape of the anti-vibration supporting device A which has been released from the mold after completion of molding. As can be seen in the figure, when the molding is completed, the damper 8 in the upside-down state is continuously provided to the lower end of the support body 7 through 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 superposed on the lower surface of the collar portion 73 of the support 7 as shown in FIG. Anti-vibration support device A shown in FIG.
The shape is suitable for integral molding of rubber, and taking into account that the whole is molded with rubber, the situation where release becomes difficult does not occur.

[0029] The anti-vibration supporting device A described above, in the case of employing the coupling of the support frame of the optical recording reproducing apparatus, a chassis function unit equipped with pickup optical recording reproducing apparatus is assembled, The anti-vibration support device A
Mounting portions 1 provided at three or four points on the support frame
It is desirable to use it at the connecting points of the mounting portions 2 provided at three or four positions of the chassis, and if it is so configured, three or four chassis are provided for the support frame.
Only the anti-vibration supporting device A is connected. Therefore, the vibration transmission path from the support frame to the chassis is blocked by the plurality of anti-vibration support devices A that exhibit a vibration absorbing action.

[0030]

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

[Brief description of drawings]

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

2 is a plan view of the anti-vibration support device of FIG . 1. FIG.

3 is a bottom view of the anti-vibration support device of FIG . 1. FIG.

FIG. 4 is a vertical cross-sectional front view of the anti-vibration support device of FIG . 1 in use.

FIG. 5 is a plan view of an attachment portion on the side of a support frame, which is a member on one side.

FIG. 6 is a vertical cross-sectional front view showing the shape immediately after releasing the mold when the vibration-damping support device of FIG . 1 is molded from rubber.

FIG. 7 is a cross-sectional view of a usage example of a conventional anti-vibration support device.

8 is a plan view of a mounting portion on the side of a support frame, which is a one-side member used in combination with the anti-vibration support device of FIG . 7 .

FIG. 9 is a plan view of a mounting portion on the chassis side which is the other side member.

[Explanation of symbols]

A anti-vibration support device 1 Mounting part (mounting part of one side member) 2 Mounting part (mounting part of the other side member) 8 damper 7 Support 14 Mounting port 15 lips 81 through hole 82,83 bulge 84 holding part 85 Seat 71 Shaft 72 Engagement part 73 Tsubabe 74,75 Engaging surface 76 recess 77 claw pieces 78 Split groove 86 consecutive parts

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Claims (2)

(57) [Claims] 1. Elasticity interposed between a member on one side as a support frame of an optical recording / reproducing apparatus and a member on the other side as a chassis to which a functional part having a pickup of the optical recording / reproducing apparatus is assembled. Equipped with a damper,
A support body for positioning the damper, wherein the support body is provided with a shaft portion provided in a through hole portion provided in the damper, and a mounting port of the one side member provided at one end side of the shaft portion. The engaging part fixed to the one side member and the other end of the shaft part.
With a collar that holds the par in cooperation with the one-sided member.
And, the damper, and the through holes, a plurality of aligned longitudinally
Between the hollow bulge and the two adjacent bulges mentioned above
Are formed on the other side of the mounting portion of the member
Recessed holding part that is clamped and held by the
An anti-vibration support device having a seating portion mounted on the rim of the mouth , wherein the damper and the support body are integrally formed of rubber.
One end of the damper is used as the seating part,
The inner peripheral portion of the seat portion and the outer peripheral surface on the one end side of the shaft portion are seated as described above.
The dampers are connected to each other via a connecting portion that is thinner than the damper portion.
If the other end of the
In addition, the integrally molded body is attached to the lower end of the support through the continuous portion.
Wrap the support with the above dampers that are serially turned upside down
So that the other end of the damper is attached to the underside of the collar.
The anti-vibration support device is characterized by being superposed on . 2. The engaging portion is on both sides of a rim of the mounting opening.
On top of each other and sandwich the rim of the mounting port on both sides.
Formed between a pair of engaging surfaces to be held and those engaging surfaces
The anti-vibration support device according to claim 1, further comprising: a recess for receiving the rim, and a split groove that divides the engaging portion into a plurality of elastic claw pieces.