JP2007012228A - Rubber damper and disk apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber damper which provides a sufficient vibration attenuating effect without causing a potential difference in ground level between a recording/reproduction apparatus and a circuit board for processing a signal thereof, and a disk apparatus thereof. <P>SOLUTION: The rubber damper 6 comprises a damper body 7 and a conductive member 8 which are provided as different members. By the damper body 7, the recording/reproduction apparatus 2 is elastically supported with respect to a support 4 so that vibration is prevented. The support 4 and the recording/reproduction apparatus 2 are conductively connected with the conductive member 8 having a support conductive portion 8a conductively connected to a conductive portion of the support 4 and an apparatus conductive portion 8b conductively connected with a conductive portion of the recording/reproduction apparatus 2. Therefore, the vibration of the recording/reproduction apparatus 2 is reliably attenuated, and even if the damper main body 7 is affected by vibration to be elastically deformed, stable conductive connection can be achieved without a change in resistance value. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disk-shaped recording medium (hereinafter referred to as “disk”) such as a compact disk (CD) and a hard disk drive (HDD) used for audio equipment, video equipment, information equipment, etc. for in-vehicle use and consumer use. The present invention relates to a rubber damper and a disk device for attenuating vibration of a disk device that reproduces information recorded on the disk.

  A disk device is a precision device that records or reproduces information on a disk by bringing a magnetic head or an optical pickup close to the disk that rotates at high speed by a motor. Therefore, it is vulnerable to internal vibration caused by rotation of the eccentric disk and external vibration transmitted from the outside of the device, and it is necessary to prevent malfunction caused by them. Therefore, it is usual to dampen the vibration of the recording / reproducing apparatus by interposing a damper between the recording / reproducing apparatus mounted with the disc reproducing mechanism and the housing.

  For example, as shown in FIG. 11, the damper 1 according to the conventional example has a damper 1 made of a lump-like rubber-like elastic body with respect to a U-shaped damper fixing member 2 a provided in the recording / reproducing apparatus 2. In addition to being fixed, the fixing pin 3 is inserted into the insertion hole formed so as to pass through, and is fixed to the casing 4, and is attached between the recording / reproducing apparatus 2 and the casing 4. Thus, in the conventional disk device 5, the recording / reproducing device 2 is elastically supported inside the housing 4 by the damper 1 (see Patent Document 1).

  Specifically, as shown in FIG. 12, the damper 1 is formed in a substantially cylindrical shape made of an insulating rubber-like elastic body. A groove-like support portion 1a that is engaged with the damper fixing member 2a of the recording / reproducing apparatus 2 is formed on the periphery of the outer peripheral side surface.

  By the way, as described above, a recording / reproducing apparatus such as a hard disk drive or a CD drive is charged with static electricity to rotate the disk at a high speed. This static electricity is accumulated in the recording / reproducing apparatus 2 because the recording / reproducing apparatus 2 is elastically supported by the insulating damper 1 inside the housing 4. For this reason, between the ground level of the recording / reproducing apparatus 2 and the ground level of the circuit board (not shown) of the disk device 5 which is installed inside the housing 4 and processes signals sent from the recording / reproducing apparatus 2. There is a possibility that a potential difference occurs in the digital signal such as a sound or an image and the digital signal such as an image is not processed correctly on the circuit board.

Therefore, in order to avoid the above problems, the damper 1 is formed of a conductive rubber-like elastic body in which a conductive filler is blended with a base polymer, and this damper 1 is connected to the ground electrode of the recording / reproducing apparatus 2 and the ground electrode of the circuit board. Have been disclosed (see Patent Document 2 and Patent Document 3).
Japanese Patent Laid-Open No. 10-172272 JP-A-6-143485 JP-A-8-130848

However, the volume resistance value of the conductive rubber-like elastic body is about several hundred Ω · cm, and the conduction resistance value is higher than that of a normal earth path member, so that sufficient energization may not be performed.
In addition, when the conductive rubber-like elastic body undergoes elastic deformation due to vibration, the volume resistance value changes due to the change in the state of density between the conductive fillers dispersed in the base polymer. The conduction resistance value of the elastic body becomes unstable and sufficient energization may not be performed.

  The present invention has been made against the background of the prior art as described above. That is, an object of the present invention is to provide a rubber damper and a disk device that do not cause a potential difference between ground levels of a recording / reproducing apparatus and a circuit board that processes the signal, and that can obtain a sufficient vibration damping effect.

  And this invention which achieves the said objective is comprised as follows.

  That is, the present invention is a cylindrical rubber-like elastic body having a groove-shaped support portion on the outer peripheral surface and having a central hole along the axial direction, and a recording / reproducing apparatus for a disk-shaped recording medium in the groove-shaped support portion. A damper body that is fixed to the conductive portion of the support of the recording / reproducing apparatus by a fixing pin that is inserted through the central hole, and elastically supports the recording / reproducing apparatus with respect to the support, Provided on the end face of the damper body facing the support body, and provided on the support body conductive section that makes conductive contact with the conductive section of the support body, and on the groove-shaped support section of the damper body, and on the conductive section of the recording / reproducing apparatus There is provided a rubber damper having a conductive portion for a device that is in conductive contact with a conductive member that conductively connects a support and a recording / reproducing device.

  In the present invention, since the recording / reproducing apparatus is elastically supported by the damper against the support, the vibration of the recording / reproducing apparatus can be reliably damped. In addition to this basic performance, the rubber damper of the present invention is provided on the end face of the damper main body facing the support, and has a conductive portion for support that makes conductive contact with the conductive portion of the support, and a groove-like shape of the damper main body. The apparatus includes a conductive member that is provided on the support unit and that is in conductive contact with the conductive unit of the recording / reproducing device, and that electrically connects the support and the recording / reproducing device. In other words, since the damper body for vibration damping and the conductive member serving as the conductive path are configured as separate members, as compared with the case where the conductive connection is performed by the conductive filler blended in the base polymer as in the conventional damper 1. Thus, the resistance value can be constantly reduced, and even if the damper main body is elastically deformed by vibration, the resistance value does not change and a stable conductive connection can be realized. Therefore, the potential difference of the ground level generated between the conductive portion of the support and the conductive portion of the recording / reproducing apparatus can be reliably and stably eliminated.

  In the rubber damper according to the present invention, the conductive portion for support is formed in an annular shape through which a fixing pin can be inserted.

  In the present invention, the support conductive portion is formed in an annular shape through which a fixing pin for fixing the damper main body to the support can be inserted. For this reason, by inserting the fixing pin, the support conductive portion can be easily fixed between the conductive portion of the support and the end face of the damper main body facing the support. Therefore, the conductive portion of the support and the conductive member can be simply and reliably conductively connected. Further, when the damper main body is subjected to vibration, it is assumed that the conductive member for support is displaced from the initial mounting state due to deformation or vibration of the damper main body. However, according to the present invention, even if it is displaced, it is caught by the inserted fixing pin and cannot be removed.

  In the present invention, the conductive portion for the device of the rubber damper is formed in an annular shape that can be attached to the groove-shaped support portion of the damper main body.

  In this invention, the electroconductive part for apparatuses is formed in the cyclic | annular form which can be attached to the groove-shaped support part of a damper main body. For this reason, the device conductive portion can be easily fixed between the conductive portion of the recording / reproducing device and the groove-shaped support portion to which the recording / reproducing device is attached. Therefore, the conductive portion of the recording / reproducing apparatus and the conductive member can be conductively connected easily and reliably. Further, even if the damper main body is subjected to vibration and elastically deformed, the device conductive portion does not come off from the support portion because it is an annular shape that surrounds the support portion.

  The present invention relates to the rubber damper, comprising a conductive member, a support conductive part at one end, a device conductive part at the other end, and a conductive connection connecting the support conductive part and the device conductive part. It was formed as a monolith having a part.

  In the present invention, since the conductive member is an integral member, a reliable conductive connection between the conductive portion for support and the conductive portion for apparatus is possible, and handling is easy even when the rubber damper is manufactured.

  According to the present invention, the rubber damper is provided with a rubber-like elastic body filling hole for forming a damper main body in the support conductive portion and the device conductive portion, and the rubber-like elastic body fills the filling hole. A conductive member was fixed to the surface.

  In the present invention, the rubber-like elastic body is filled in the filling holes of the support conductive portion and the device conductive portion, and the conductive member is fixed to the damper body. For this reason, the conductive part for support and the conductive part for apparatus can be integrally fixed to the damper main body at a desired position. Therefore, the rubber damper can be easily assembled, and a rubber damper can be realized in which the conductive member and the conductive portion of the support and the conductive portion of the recording / reproducing apparatus can be easily and reliably connected.

  In the present invention, for the rubber damper, the conductive member is formed as a thin plate, woven fabric, nonwoven fabric or resin film having flexibility and conductivity.

  According to the present invention, since the conductive member is formed of a flexible and conductive thin plate, woven fabric, non-woven fabric or resin film, the elastic coefficient of the conductive member as a whole is small, and vibration damping characteristics due to elastic deformation of the rubber damper. Does not adversely affect It should be noted that “being conductive” means that the material itself is conductive or the material is made conductive. Examples of the former include thin metal plates, woven fabrics or non-woven fabrics made of conductive fibers such as metal fibers and carbon fibers. An example of the latter is a resin film with a metal layer.

  Further, the present invention is a cylindrical rubber-like elastic body having a groove-shaped support portion on the outer peripheral surface and having a central hole along the axial direction, and a recording / reproducing apparatus for a disk-shaped recording medium in the groove-shaped support portion And a damper main body that is fixed to the conductive portion of the support of the recording / reproducing apparatus by a fixing pin that is inserted into the central hole and elastically supports the recording / reproducing apparatus with respect to the support. , Exposed in the hole of the central hole of the damper main body and exposed to the conductive support pin for conductive contact with the conductive fixing pin inserted through the central hole, and exposed in the groove-shaped support portion of the damper main body for recording There is provided a rubber damper having a conductive portion for device that is in conductive contact with a conductive portion of a reproducing device, and a conductive member that conductively connects the support and the recording / reproducing device.

  In the present invention, since the damper main body elastically supports the recording / reproducing apparatus with respect to the support, the vibration of the recording / reproducing apparatus can be reliably damped. In addition to this basic performance, the rubber damper of the present invention comprises a conductive part for a support member that is exposed in a hole of a central hole of a damper body and is in conductive contact with a conductive fixing pin inserted through the central hole, and a damper. The apparatus has a conductive part for device that is exposed to the groove-shaped support part of the main body and is in conductive contact with the conductive part of the recording / reproducing apparatus, and includes a conductive member that conductively connects the support and the recording / reproducing apparatus. In other words, since the damper body for vibration damping and the conductive member serving as the conductive path are configured as separate members, as compared with the case where the conductive connection is performed by the conductive filler blended in the base polymer as in the conventional damper 1. Thus, the resistance value can be constantly reduced, and even if the damper body is elastically deformed by vibration, the resistance value does not change and a stable conductive connection can be realized. Therefore, the potential difference of the ground level generated between the conductive portion of the support and the conductive portion of the recording / reproducing apparatus can be reliably and stably eliminated.

  The present invention relates to the rubber damper, the conductive member, the inner ring portion that forms the conductive portion for the support, the outer ring portion that forms the conductive portion for the device, the connecting portion that connects the inner ring portion and the outer ring portion, It was formed with a single conductive plate in an annular shape having a rubber-like elastic filling hole forming a damper main body opened between the ring portion and the outer ring portion.

In the present invention, since the conductive member is an annular, single conductive plate having an inner ring portion, an outer ring portion, and a connecting portion, the conductive portion for support and the conductive portion for device can be reliably conductively connected. Easy to handle when manufacturing rubber dampers. This conductive member can be easily manufactured at low cost by, for example, punching a conductive metal thin plate.
Further, since the conductive member is formed with a rubber-like elastic body filling hole forming the damper main body, the rubber-like elastic body forming the damper main body is not divided between the upper side and the lower side with the conductive member as a boundary. Therefore, reliable conductive connection can be realized while maintaining the vibration damping performance due to the deformation of the damper main body.

  In the present invention, the conductive member of the rubber damper is embedded in the damper body.

  In the present invention, since the conductive member is embedded in the damper main body, the conductive member can be handled as one component without being detached from the damper main body, and can be easily assembled to the disk device.

In order to achieve the above object, the present invention provides the following disk device.
According to a first aspect of the present invention, there is provided a disc apparatus comprising: a recording / reproducing apparatus for a disk-shaped recording medium; a circuit board that processes an output signal of the recording / reproducing apparatus; and a housing that accommodates the recording / reproducing apparatus and the circuit board. The rubber damper according to any one of the present invention is attached between the recording / reproducing device and the circuit board as the support, and the conductive portion for the device of the conductive member is connected to the ground electrode of the recording / reproducing device, while the conductive member The disk device is characterized in that the support conductive portion is connected to the ground electrode of the circuit board.

  According to a second aspect of the present invention, there is provided a recording / reproducing apparatus for a disk-shaped recording medium, a circuit board for processing an output signal of the recording / reproducing apparatus, a recording / reproducing apparatus and a circuit board, and conductive to a ground electrode of the circuit board. A disk device comprising a connected housing, wherein any of the rubber dampers according to the present invention is attached between the recording / reproducing device and the housing as the support, and the conductive portion for the device of the conductive member is attached to the recording / reproducing device. The disk device is characterized in that the conductive member for the support of the conductive member is conductively connected to the housing while being connected to the ground electrode.

  In these inventions, the rubber damper is attached between the recording / reproducing device and the circuit board or the housing, the conductive part for the device of the conductive member is connected to the ground electrode of the recording / reproducing device, and the conductive material for the support of the conductive member is provided. The part is connected to the ground electrode or casing of the circuit board. That is, since the damper body for vibration damping and the conductive member for the conductive path are separate members, the resistance value of the conductive member can be constantly reduced, and the resistance value does not change even when elastically deformed by vibration. For this reason, the potential difference of the ground level generated between the ground electrode of the recording / reproducing apparatus and the ground electrode of the circuit board can be reliably and stably eliminated. Therefore, output signals such as sound and images read from the disk-shaped recording medium by the recording / reproducing apparatus can be accurately processed by the circuit board of the circuit board.

  According to the rubber damper and disk device of the present invention, it is possible to sufficiently dampen the vibration of the recording / reproducing device by the damper main body that elastically supports the recording / reproducing device, and through the conductive member, It is possible to eliminate the ground level potential difference from the circuit board that processes the signal, and to keep the ground level of the recording / reproducing apparatus at an appropriate potential. Therefore, the output signal such as sound or image read from the disk-shaped recording medium by the recording / reproducing apparatus can be accurately processed without problems such as erroneous recognition by the signal processing system of the circuit board.

  Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. In addition, about the structure which is common in each embodiment, the same code | symbol is attached | subjected and duplication description is abbreviate | omitted.

First Embodiment [FIGS. 1 to 4]

A. Rubber dampers 6 embodiment first embodiment of the rubber damper, and a damper body 7 and the conductive member 8. The damper main body 7 is formed of a cylindrical rubber-like elastic body having a circumferential groove-shaped support portion 7a on the outer peripheral surface and a center hole 7b penetrating circularly along the axial direction. Yes. The conductive member 8 has an annular support conductive portion 8a at one end, an annular device conductive portion 8b at the other end, and a conductive connecting portion 8c that connects the two. It is configured as.

  The circumferential groove-shaped support portion 7 a in the damper main body 7 is formed at a substantially central portion in the axial direction of the damper main body 7. A recording / reproducing apparatus 2 for a disk-shaped recording medium such as a hard disk drive is formed with a conductive attachment portion 2a as a “conductive portion” that is electrically connected to a ground electrode of the recording / reproducing apparatus 2 (not shown). The conductive attachment portion 2a is formed with an engagement inner edge 2b having a relative shape with the arc of the support portion 7a. The engagement inner edge 2b is engaged with the support portion 7a so as to be sandwiched from the side surface. Further, the fixing pin 3 is inserted into the center hole 7 b of the damper main body 7. A screw is formed on the distal end side of the fixing pin 3. When this screw is fastened to a screw hole 4 a provided in the housing 4 as a “support” made of a metal conductor, the damper main body 7 is attached to the housing 4. Fixed. In the present embodiment, the recording / reproducing apparatus 2 is elastically vibration-proof supported with respect to the casing 4 by the four damper bodies 7 attached to the four corners of the recording / reproducing apparatus 2.

  In the conductive member 8, the support conductive portion 8 a at one end is formed in an annular shape through which the fixing pin 3 can be inserted. The support conductive portion 8 a is aligned with the housing (conductive portion) 4 on the end surface of the damper main body 7 facing the housing (conductive portion) 4 with the hole aligned with the center hole 7 b of the damper main body 7. Fixed to be in conductive contact. In this way, the support conductive portion 8 a is sandwiched between the end face of the damper main body 7 and the housing (conductive portion) 4 with the fixing pin 3 inserted. The device conductive portion 8 b at the other end is formed in an annular shape that can be attached to the groove-like support portion 7 a of the damper main body 7. The device conductive portion 8b is conductive with respect to the conductive mounting portion 2a of the recording / reproducing apparatus 2 attached to the groove-shaped support portion 7a of the damper main body 7 in a state of being circumferentially attached to the groove-shaped support portion 7a of the damper main body 7. Fixed to contact. Thus, the device conductive portion 8 b is sandwiched between the support portion 7 a of the damper main body 7 and the conductive attachment portion 2 a of the recording / reproducing apparatus 2. And the conductive connection part 8c which connects both has the flexibility which can become an arcuate curved shape between the electroconductive part 8a for support bodies, and the electroconductive part 8b for apparatuses in the attachment state of the electroconductive member 8. It is formed as.

  The conductive member 8 is formed of a thin plate-like conductor having a small elastic coefficient so as not to affect the vibration damping performance due to the elastic deformation of the damper main body 7. For example, a thin metal plate such as copper or aluminum, a woven or non-woven fabric made of metal fiber or carbon fiber, or a laminate in which a metal layer is fixed to a resin film can be used. Among these, as a specific example of the laminate, a resin film of PET, PEN, PC, polyimide, polyamide, etc. having a thickness of 10 μm to 100 μm is used as a base material, and a metal layer is fixed thereto by plating treatment, pressure bonding treatment, adhesion treatment, etc. Can be realized. Further, it is desirable that the width of the conductive connecting portion 8c be as narrow as possible in order to reduce the elastic modulus.

  Next, an example of the manufacturing method of the rubber damper 6 in this embodiment is demonstrated.

First, the conductive member 8 is formed. When the conductive member 8 is a metal thin plate or the above-mentioned woven or non-woven fabric, it is obtained by punching the metal thin plate into a shape in which the support conductive portion 8a and the device conductive portion 8b are connected by the conductive connecting portion 8c. Can do. Moreover, in the case of the above-mentioned laminated body, after forming a metal layer on a base material, it can obtain similarly.
Next, the damper main body 7 is molded, and the conductive member 8 is attached to the damper main body 7. For this purpose, the apparatus conductive portion 8b of the conductive member 8 is inserted into the molding die of the damper main body 7, and the rubber-like elastic body that becomes the damper main body 7 is cured and molded. When the damper main body 7 is removed from the mold, a rubber damper 6 is provided on the outer periphery of the circumferential groove-shaped support portion 7a so that the device conductive portion 8b of the conductive member 8 can rotate and move around and around the axis of the support portion 7a. Obtainable.

B. Disk apparatus 9 of Embodiment first embodiment of a disk apparatus has a recording and reproducing apparatus 2 and the circuit board 10 inside the metal housing 4. The rubber damper 6 according to the first embodiment is attached between the recording / reproducing apparatus 2 and the housing 4.

  The circuit board 10 is fixed to the housing 4 via a boss 12 by a metal screw 11, and the ground electrode of the circuit board 10 is conductively connected to the metal housing 4 through the metal screw 11. The circuit board 10 processes the output signal read from the disk-shaped recording medium by the recording / reproducing apparatus 2.

  The recording / reproducing apparatus 2 is elastically supported by the housing 4 via the rubber damper 6 of the first embodiment. That is, the conductive attachment portion 2 a of the recording / reproducing apparatus 2 is attached to the circumferential groove-shaped support portion 7 a of the damper main body 7. The lower surface of the conductive attachment portion 2a is in contact with the device conductive portion 8b of the conductive member 8, whereby the recording / reproducing apparatus 2 and the conductive member 8 are conductively connected. The support conductive portion 8 a of the conductive member 8 is attached to the end surface of the damper main body 7 facing the housing 4 and is in contact with the metal housing 4. As a result, the conductive member 8 and the metal casing 4 are conductively connected.

  As described above, in the disk device 9 according to the first embodiment, [conductive attachment portion 2a]-[conductive member 8]-[metal casing 4]-[metal screw 11]-[grounding the circuit board 10]. Electrode] is formed, and the recording / reproducing apparatus 2 and the ground electrode of the circuit board 10 are substantially conductively connected at a common ground potential.

C. Functions and Effects of the Rubber Damper 6 and the Disk Device 9 of the First Embodiment Next, functions and effects of the present embodiment will be described except for those already described.

  Since the damper main body 7 of the rubber damper 6 elastically supports the recording / reproducing apparatus 2 with respect to the housing 4, the disturbance vibration and disturbance vibration of the recording / reproducing apparatus 2 can be sufficiently damped.

  The metal housing (conductive portion) 4 and the conductive attachment portion 2 a of the recording / reproducing apparatus 2 are conductively connected by a conductive member 8, which is a separate member from the damper main body 7. That is, the vibration damping damper body 7 itself is not made conductive, but the conductive member 8 serving as a conductive path is a separate member from the damper body 7. For this reason, the resistance value of the conductive member 8 can be constantly reduced, and the conduction resistance value does not change even if the damper main body 7 undergoes elastic deformation due to vibration. Therefore, the potential difference of the ground level generated between the housing 4 and the conductive mounting portion 2a of the recording / reproducing apparatus 2 can be reliably and stably eliminated.

  The conductive member 8 includes a support conductive portion 8a, a device conductive portion 8b, and a conductive connecting portion 8c as an integrated body. For this reason, the conductive part for support 8a and the conductive part for device 8b can be reliably conductively connected. In addition, the rubber damper 6 can be easily handled.

  The support conductive portion 8 a of the conductive member 8 has an annular shape through which the fixing pin 3 can be inserted. For this reason, by inserting the fixing pin 3, the support conductive portion 8 a can be easily fixed between the housing 4 and the end face of the damper main body 7. Therefore, the housing 4 and the conductive member 8 can be simply and reliably conductively connected. In addition, if the damper main body 7 is deformed by receiving vibration, it is assumed that the support conductive portion 8a is displaced from the initial mounting state. .

  The device conductive portion 8 b of the conductive member 8 has an annular shape that can be attached to the circumferential groove-shaped support portion 7 a of the damper body 7. Therefore, the device conductive portion 8b can be easily fixed between the conductive mounting portion 2a of the recording / reproducing apparatus 2 and the support portion 7a. Therefore, the conductive attachment portion 2a of the recording / reproducing apparatus 2 and the conductive member 8 can be easily and reliably conductively connected. Even if the damper main body 7 is elastically deformed, the conductive portion 8b for the device does not come off from the support portion 7a because it is an annular shape that surrounds the support portion 7a.

  In the disk device 9, the damper main body 7 for vibration damping and the conductive member 8 for the conductive path are separate members. Therefore, the resistance value of the conductive member 8 can be constantly reduced, and even when elastically deformed by receiving vibrations. The conduction resistance value does not change. For this reason, the potential difference of the ground level generated between the ground electrode of the recording / reproducing apparatus 2 and the circuit board 10 conductively connected to the housing 4 and the ground electrode can be reliably and stably eliminated. Therefore, in this disk device 9, there is no problem of erroneously recognizing output signals such as sound and images read from the disk-shaped recording medium by the recording / reproducing device 2, and the signal processing system of the circuit board performs accurate processing. be able to.

D. Modified Example of First Embodiment Finally, a rubber damper 13 according to a modified example of this embodiment will be described. As shown in FIG. 4 (B), the conductive member 8a for the support member and the conductive member 8b for the device of the conductive member 8 may be formed with a rubber-like elastic filling hole 8d forming the damper body 7. . By doing so, since the rubber-like elastic body is filled in the filling hole 8d and hardened during the insert molding, the conductive member 8 can be firmly fixed to a predetermined position of the damper main body 7, and the damper main body 7 and the conductive member 8 are connected to each other. It will be integrally formed. Therefore, as in the first embodiment described above, the conductive portion 8a that is rotatable around the outer periphery of the support portion 7a and is movable in the axial direction is brought close to the end of the support portion 7a, and the conductive attachment portion 2a is inserted. In addition, when the rubber damper 6 is fixed to the housing 4, an assembling work for inserting the fixing pin 3 in a state in which the support conductive portion 8 a is bent is not required, and the assembling work to the disk device 9 is saved. Can be

  The conductive member 8 described above is formed of a flexible material having a small elastic modulus and is bent and attached to the conductive connecting portion 8c. However, the conductive member 8 is similar to the bent shape of the conductive connecting portion 8c in advance. It is good also as the electrically-conductive member in which the bending part of this is formed.

Second Embodiment [FIGS. 5 to 9]

A. Rubber dampers 14 embodiment the second embodiment of the rubber damper is different from the rubber damper 6 of the first embodiment, the structure of the conductive member 15. The remaining configuration is the same as that of the first embodiment, and a duplicate description is omitted.

  The conductive member 15 of this embodiment includes a support conductive portion 15a as an “inner ring portion”, a device conductive portion 15b as an “outer ring portion”, a conductive connecting portion 15c connecting them, and a damper main body. 7 is formed of a single conductive plate in a ring shape having a rubber-like elastic filling hole 15d. The material of the conductive member 15 can be the same as that of the first embodiment, but the bending deformation as in the conductive connecting portion 8c of the conductive member 8 of the first embodiment is not necessary. It can be used even if it is not flexible or has poor material.

  The filling hole 15 d of the conductive member 15 is filled and cured with a rubber-like elastic body and is embedded in the damper main body 7. Further, the support conductive portion 15a of the conductive member 15 is exposed in the hole of the center hole 7b of the damper body 7, and comes into conductive contact with the conductive fixing pin 3 inserted through the center hole 7b. ing. The device conductive portion 15b is exposed on the circumferential groove-shaped support portion 7a of the damper main body 7, and is in conductive contact with the conductive mounting portion 2a of the recording / reproducing device 2.

B. Disc Device Embodiment The disc device 16 of the second embodiment is different from the disc device 9 of the first embodiment in that the rubber damper 14 of the second embodiment is attached between the recording / reproducing device 2 and the housing 4. Structure. The rest of the configuration is the same as in the first embodiment, and redundant description is omitted including actions and effects.

  In the rubber damper 14 of the second embodiment, similarly to the rubber damper 6 of the first embodiment, the conductive mounting portion 2a of the recording / reproducing apparatus 2 is mounted on the groove-shaped support portion 14a of the damper main body 7, and the outer ring portion. The device conductive portion 15b is in contact with the conductive mounting portion 2a. Further, the conductive fixing pin 3 is inserted into the center hole 7 b of the damper main body 7, so that the support conductive portion 15 a as an inner ring portion comes into contact with the fixing pin 3. The fixing pin 3 is fastened to the screw hole 4 a of the metal housing 4. A circuit board 10 is attached to the housing 4 by a metal screw 11 that contacts a ground electrode of the board circuit.

  As described above, in the disk device 16 of the second embodiment, [conductive attachment portion 2a]-[conductive portion for device 15b (outer ring portion) of conductive member 15]-[conductive connection portion 15c of conductive member 15]. ]-[Conductive member 15a for support member (inner ring)]-[metal fixing screw 3]-[metal casing 4]-[metal screw 11]-[grounding the circuit board 10] Electrode] is formed, and the recording / reproducing apparatus 2 and the ground electrode of the circuit board 10 are substantially conductively connected at a common ground potential.

C. Actions and Effects of Rubber Damper 14 and Disk Device 16 of Second Embodiment Next, the actions and effects of the second embodiment will be described except those already described, but only those unique to the second embodiment will be described. The description common to the first embodiment is omitted.

  Since the conductive member 15 is a single conductive plate, the conductive member for support 15a and the conductive member for device 15b can be reliably conductively connected, and can be handled easily when the rubber damper 14 is manufactured. In addition, unlike the conductive member 8 of the first embodiment, since there is no configuration corresponding to the conductive connecting portion 8c protruding outside the damper main body 7 in use, space saving around the mounting location in the housing 4 can be achieved. Can respond to the request.

  Further, the rubber-like elastic body is filled and cured in the filling hole 15d of the conductive member 15, and the rubber-like elastic bodies on both sides with the conductive member 15 as a boundary can be used even if the conductive member 15 is embedded in the damper main body 7. Is not divided. Therefore, a reliable conductive connection can be realized while maintaining the vibration damping performance due to the elastic deformation of the damper main body 7, and the conductive member 15 is not detached from the damper main body 7.

  The conductive member 15 is exposed in the hole of the central hole 7b of the damper main body 7 in the conductive body 15a for the support body, and comes into contact if the fixing pin 3 is inserted into the central hole 7b. Thus, the conductive fixing pin 3 can be shared for (1) fixing the damper main body 7 and (2) forming the conductive path.

D. Modification of Second Embodiment A modification of the present embodiment will be described. In the conductive member 15, the support conductive portion 15a as the "inner ring portion" is exemplified as an annular shape. However, in this case, the entire circumference of the support conductive portion 15a is in contact with the fixed pin 3 to be inserted. The contact resistance may affect the mounting property of the fixing pin 3. The conductive member 15 in FIG. 9 is an improvement on this.
In the conductive member 15 of this modified example, the inner peripheral edge is embedded in the thickness of the damper main body 7, and instead, a tongue-shaped support conductive part that protrudes inward from two locations on the inner peripheral edge 15e is formed. Since this support conductive part 15e partially protrudes from two locations on the inner periphery and the protruding form is cantilevered and elastic, it can relax the contact resistance with the fixed pin 3 inserted, and is good Can be easily mounted. In addition, although the example which protrudes in 2 places was shown in FIG. 9, 1 place or 3 places or more may be sufficient.

Third Embodiment [FIGS. 1, 2, and 10]

  The rubber damper of the third embodiment is an embodiment relating to a disk device using the rubber dampers 6 and 14 of the first embodiment or the second embodiment described above. Here, an example in which the rubber damper 6 of the first embodiment is used will be described.

  The disc device 17 of the third embodiment is different from the disc device 9 of the first embodiment in that the rubber damper 6 of the first embodiment is attached between the recording / reproducing device 2 and the circuit board 10. The remaining configuration is the same as that of the first embodiment, and a duplicate description is omitted.

  In the disk device 17 according to the present embodiment, the circuit board 10 is fixed and accommodated to the housing 4 via the boss 12 together with the rubber damper 6 by the conductive fixing pin 3 inserted through the center hole 7 b of the damper main body 7. The Between the circuit board 10 and the end face of the damper main body 7 facing the circuit board 10, a support conductive portion 8a of the conductive member 8 is sandwiched. As a result, the support conductive portion 8 a of the conductive member 8 is in direct conductive contact with the ground electrode of the circuit board 10. The conductive fixing pin 3 is in contact with the ground electrode of the circuit board 10, and the tip thereof is screwed into the screw hole 4 a of the conductive housing 4.

  As described above, in the disk device 17 of the third embodiment, the conductive mounting portion 2a of the recording / reproducing device 2 and the ground electrode of the circuit board 10 are directly conductively connected, and the conductive fixing pin 3 is connected to the common conductive member. A ground connection to the housing 4 is achieved as a path. Therefore, the conductive fixing pins 3 are (1) for fixing the damper body 7, (2) grounding path for the recording / reproducing apparatus 2, (3) grounding path for the circuit board 10, (4) for fixing the circuit board, It can be used for the four applications, and the number of parts can be reduced.

Modification common to each embodiment

  Although the damper main body 7 in the above embodiment illustrated the cylindrical shape, it may be a rectangular tube shape. In addition, when the shape of the support section 7a having a circular cross section is changed to a polygonal cross section, the shape of the device-side conductive section 8b can also be changed to an annular polygon that matches the shape. Furthermore, although the conductive member 8a for the support member and the conductive portion 8b for the device of the conductive member 8 are endless ring-shaped ones, as long as it is difficult to disengage from the fixing pin 3 or the support portion 7a of the damper main body 7, It may be a ring with an end.

Explanatory drawing of the disc apparatus of 1st Embodiment. Explanatory drawing of the rubber damper of 1st Embodiment. The principal part expansion explanatory drawing of the attachment structure of the rubber damper shown in FIG. Explanatory drawing of the electrically-conductive member with which the rubber damper of FIG.1 and FIG.2 is equipped. Explanatory drawing of the disc apparatus of 2nd Embodiment. Explanatory drawing of the rubber damper of 2nd Embodiment. The principal part expansion explanatory drawing of the attachment structure of the rubber damper shown in FIG. Explanatory drawing of the electrically-conductive member with which the rubber damper of FIG.5 and FIG.6 is equipped. The principal part expansion explanatory drawing which shows the modification of an electrically-conductive member. The principal part expansion explanatory drawing of the attachment structure of the rubber damper by 3rd Embodiment. 1 is an explanatory diagram of a disk device according to a conventional example. Explanatory drawing of the rubber damper of FIG.

Explanation of symbols

1 Damper (conventional example)
DESCRIPTION OF SYMBOLS 1a Support part 2 Recording / reproducing apparatus 2a Conductive attachment part (conductive part)
3 Fixing pin 4 Case (support, conductive part)
4a Screw hole (conductive part)
5 Disc device 6 Rubber damper (first embodiment)
7 damper body 7a support portion 7b central hole 8 conductive member 8a support conductive portion 8b device conductive portion 8c conductive connecting portion 8d filling hole 9 disk device (first embodiment)
DESCRIPTION OF SYMBOLS 10 Circuit board 11 Metal screw 12 Boss 13 Rubber damper (Modification of 1st Embodiment)
14 Rubber damper (second embodiment)
DESCRIPTION OF SYMBOLS 15 Conductive member 15a Conductive part for support body 15b Conductive part for apparatus 15c Connection part 15d Filling hole 15e Conductive part for support body 16 Disk apparatus (2nd Embodiment)
17 disk device (third embodiment)

Claims (11)

It is a cylindrical rubber-like elastic body having a groove-shaped support portion on the outer peripheral surface and having a center hole along the axial direction, and a conductive portion of a recording / reproducing apparatus for a disk-shaped recording medium is attached to the groove-shaped support portion A damper body fixed to the conductive portion of the support of the recording / reproducing apparatus by a fixing pin inserted through the center hole, and elastically vibration-proofing the recording / reproducing apparatus with respect to the support;
Provided on the end face of the damper body facing the support body, and provided on the support body conductive section that makes conductive contact with the conductive section of the support body, and on the groove-shaped support section of the damper body, and on the conductive section of the recording / reproducing apparatus A rubber damper, comprising: a conductive portion for a device that is in conductive contact with the conductive member; and a conductive member that conductively connects the support and the recording / reproducing device.   The rubber damper according to claim 1, wherein the conductive portion for support is formed in an annular shape through which a fixing pin can be inserted.   The rubber damper according to claim 1 or 2, wherein the conductive portion for the device is formed in an annular shape that can be attached to the groove-like support portion of the damper main body.   The conductive member is formed as an integrated body having a conductive part for a support at one end, a conductive part for a device at the other end, and a conductive connecting part connecting the conductive part for the support and the conductive part for the device. The rubber damper according to any one of claims 1 to 3.   A rubber-like elastic body filling hole forming a damper main body is formed in the support conductive portion and the device conductive portion, and the conductive elastic member is fixed to the damper main body by filling the filling hole with the rubber-like elastic body. The rubber damper according to any one of claims 1 to 4.   The rubber damper according to any one of claims 1 to 5, wherein the conductive member is formed as a flexible, conductive thin plate, woven fabric, non-woven fabric, or resin film. It is a cylindrical rubber-like elastic body having a groove-shaped support portion on the outer peripheral surface and having a center hole along the axial direction, and a conductive portion of a recording / reproducing apparatus for a disk-shaped recording medium is attached to the groove-shaped support portion A damper body fixed to the conductive portion of the support of the recording / reproducing apparatus by a fixing pin inserted through the center hole, and elastically vibration-proofing the recording / reproducing apparatus with respect to the support;
Recording / playback by exposing the conductive part for the support that is exposed in the hole of the central hole of the damper body and conductively contacting the conductive fixing pin inserted through the central hole, and the groove-shaped support part of the damper body A rubber damper, comprising: a conductive portion for device that is in conductive contact with the conductive portion of the device; and a conductive member that conductively connects the support and the recording / reproducing device.   The conductive member includes an inner ring portion that forms a conductive portion for a support, an outer ring portion that forms a conductive portion for a device, a connecting portion that connects the inner ring portion and the outer ring portion, and an inner ring portion and an outer ring portion. The rubber damper according to claim 7, wherein the rubber damper is formed of a single conductive plate having an annular shape and a filling hole of a rubber-like elastic body forming a damper main body that is opened therebetween.   The rubber damper according to claim 7 or 8, wherein the conductive member is embedded in the damper main body. A recording / reproducing apparatus for a disk-shaped recording medium;
A circuit board for processing the output signal of the recording / reproducing apparatus;
In a disk device comprising a recording / reproducing device and a housing for accommodating a circuit board,
The rubber damper according to any one of claims 1 to 9 is attached between the recording / reproducing device and the circuit board as the support, and the conductive portion for the device of the conductive member is connected to the ground electrode of the recording / reproducing device. On the other hand, a disk device characterized by connecting a conductive part for a support of a conductive member to a ground electrode of a circuit board. A recording / reproducing apparatus for a disk-shaped recording medium;
A circuit board for processing the output signal of the recording / reproducing apparatus;
In a disk device comprising a recording / reproducing device and a circuit board, and a housing electrically conductively connected to the ground electrode of the circuit board,
The rubber damper according to any one of claims 1 to 9 is attached between the recording / reproducing device and the casing as the support, and the conductive portion for the device of the conductive member is connected to the ground electrode of the recording / reproducing device. On the other hand, a disk device characterized in that a conductive part for a support of a conductive member is conductively connected to a casing.

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