JP2005025930A - Vibration proofing device and its material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration isolation device and a material which has a small spring constant and excellent vibration isolation properties, which can be manufactured easily using an inexpensive material and which can be assembled easily and can improve the assembling. <P>SOLUTION: This vibration isolation device is provided with a vibration isolation material 50 between a mechanism deck 30 and a case body 20, and the mechanism deck 30 is supported elastically on the case body 20. The vibration isolation material 50 consists of a foam block plate punched at the outer peripheral edge with an engaging hole 51 to insert an arm material 60 provided at the mechanical deck 30. The block body is provided with a slit 82 on each surface of the bock body excluding planes in which the engaging hole 51 of the block body is provided. Further, penetrating holes 83, 84 are provided at the four corners of the surface at which the engaging hole 51 is pierced in the same direction as the piercing direction of the engaging hole. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a disk recording / reproducing apparatus for recording / reproducing a disk-shaped recording medium such as an optical disk or a magneto-optical disk, a vibration isolator suitable for use in other electronic devices, and a vibration isolating member thereof. .

Conventionally, as a vibration isolator generally used in this type of disk recording / reproducing apparatus, etc.,
For example, there are those shown in FIGS.

FIG. 8 is a cross-sectional view showing a vibration isolator used in an optical disc reproducing apparatus using an optical disc as an information recording medium. This vibration isolator has a hollow anti-vibration member 1 having a vertical cross-sectional shape of 8 in shape.
And a lower case 4 provided with a support shaft 3 penetrating through the central hole 2 of the vibration isolator 1 and a mechanical deck 6 provided with an arm member 5. A washer 7 is fixed to the tip of the support shaft 3 of the lower case 4 with an attachment screw 8, and the vibration isolator 1 is attached to the lower case 4 in a state compressed in the vertical direction by the washer 8. Further, the arm member 5 of the mechanical deck 6 is provided with an engagement groove 9 that opens to the front end side.
By engaging with the constricted portion 10, the mechanical deck 6 is elastically supported by the lower case 4 via the vibration isolation member 1.

FIG. 9 is a cross-sectional view showing another example of a vibration isolator that is also used in the optical disc reproducing apparatus. This vibration isolator is provided with a hollow vibration isolator member 11 provided with a boss portion at one axial end of the shape of a longitudinal section 8 and a support shaft 3 inserted from below into a central hole 12 of the vibration isolator member 11. The lower case 4, the upper case 14 provided with the support shaft 13 inserted from above into the central hole 12 of the vibration isolation member 11, and the mechanical deck 6 provided with the arm member 5. . The support shaft 3 of the lower case 4 and the support shaft 13 of the upper case 14 are arranged so that their axis lines coincide with each other, and the vibration isolation member 11 is mounted on these support shafts 3 and 13. The engagement groove 9 of the arm portion 5 is engaged with the constricted portion 15 of the vibration isolation member 11.

However, in the conventional vibration isolator as described above, the vibration isolating members 1 and 11 are made of an injection molding machine or the like using rubber as a material in any of the conventional examples shown in FIGS. Since it is three-dimensionally formed and has a structure having a space portion inside the vibration isolating members 1 and 11, a complicated mold for manufacturing this is required. There is a problem that it takes time and effort and becomes expensive.

Further, since rubber is used as the material of the vibration isolating members 1 and 11, the spring constant becomes too high and the vibration isolating characteristics are deteriorated, which makes it difficult to obtain desired vibration isolating characteristics.
Further, in the case of the example of FIG. 8, the washer 7 and the mounting screw 8 are required for the assembly, which not only is uneconomical due to an increase in the number of parts, but also increases the number of man-hours for the assembly work. There is also a problem that becomes worse.

Patent documents and the like related to the prior art include those shown in Patent Documents 1 to 3, for example.
Japanese Utility Model Publication No. 64-48791 JP-A-5-119618 JP-A-7-37375

The problem to be solved is that the mold for manufacturing the vibration isolating member becomes complicated, the manufacturing takes time and becomes expensive, the spring constant becomes too high, and the vibration isolating characteristics deteriorate. This is the point.

The present invention has been made in view of such a conventional problem, and has a small spring constant and excellent vibration-proof characteristics, and can be easily manufactured using an inexpensive member. It is an object of the present invention to provide a vibration isolator and a vibration isolator that can be easily improved and workability can be improved.

In order to solve the above-described problems and achieve the above object, the present invention provides a vibration isolator of the present invention having a vibration isolation member interposed between a mechanical deck and an exterior body, and the mechanical deck as an exterior body. In an anti-vibration device that is elastically supported and provided with a fixing member that prevents movement of the anti-vibration member on the exterior body, the anti-vibration member includes a foamed plate-like foam material and an arm member provided on the mechanical deck. The block body is provided with an engagement hole that is engaged so as to penetrate, and the block body is provided with slits on each surface of the block body excluding the surface on which the engagement hole is provided, and the engagement hole penetrates. A structure in which through holes that penetrate in the same direction as the through-holes of the engagement holes are provided at the four corners of the surface to be engaged, and the engagement holes are formed so as to surround the engagement holes at the four corners of the surface in which the engagement holes of the block body are provided. A structure in which an L-shaped through hole penetrating in the same direction as the penetrating direction is also included.

  The vibration isolating member of the present invention is a vibration isolating member interposed between the mechanical deck and the exterior body so that the arm member provided on the mechanical deck penetrates the foamed plate-like foam material. The block body is provided with an engagement hole to be engaged, and the block body is provided with a slit on each surface of the block body excluding the surface on which the engagement hole is provided, and on the surface through which the engagement hole is penetrated. A structure in which through holes that penetrate in the same direction as the through-holes of the engagement holes are provided at the four corners, and the same through-hole direction of the engagement holes so as to surround the engagement holes at the four corners of the surface where the engagement holes of the block body are provided. It also includes a structure provided with an L-shaped through hole penetrating in the direction.

Since the present invention is configured as described above, it is possible to form an anti-vibration member having the same small spring constant in all the block bodies described above, and to reliably elastically support the mechanical deck on the exterior body. Can effectively absorb or dampen the vibrations input from, thereby improving the anti-vibration characteristics.

Further, by processing from a plate-like foam material, a vibration isolating member having a small spring constant and excellent vibration isolating characteristics can be easily and inexpensively manufactured.

  An anti-vibration device and its anti-vibration member suitable for use in a disk recording / reproducing apparatus for recording / reproducing a disk-shaped recording medium and other electronic devices have been realized with a simple structure.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention. FIG. 1 is an external perspective view of an optical disk reproducing apparatus to which the present invention is applied, and FIG. 2 is a perspective view of a mechanical deck built in the optical disk reproducing apparatus of FIG. 3 is an enlarged perspective view showing the main part of FIG. 2, FIG. 4 is an enlarged cross-sectional view showing the main part of FIG. 2, and FIG. 5 is a perspective view showing a first embodiment of the vibration isolator of the present invention. FIG. FIG. 6 is a perspective view showing a second embodiment of the vibration isolator of the present invention, and FIG. 7 is a perspective view showing a third embodiment of the vibration isolator of the present invention.

The optical disk reproducing apparatus shown in FIG. 1 is a specific example of an electronic apparatus to which the vibration isolator of the present invention is applied, and exclusively reads information recorded on a disk-shaped recording medium made of an optical disk. This is a disc player device (product name: electronic book player) that can be used. This optical disk reproducing apparatus includes an exterior body 20 in which a mechanical deck 30 shown in FIG.
A lid 22 connected to the exterior body 20 by a hinge 21 so as to be opened and closed is provided.

The outer casing 20 of this optical disk reproducing apparatus has a detachable lower case 2 that is superposed vertically.
3 and the upper case 24, and a number of operation buttons 25 are exposed on the upper surface of the upper case 24. Hinge pieces 21a and 21a constituting one member of the hinge 21 are attached to both ends of one side of the upper surface of the upper case 24, and between the hinge pieces 21a and 21a,
A hinge portion 21b constituting the other member of the hinge 21 is interposed, and this hinge portion 21 is interposed.
b is integrally formed on one side of the lid 22.

A liquid crystal display 26 that displays information such as characters, symbols, and images is attached to the inner surface of the lid 22. Although not shown, the liquid crystal display 26 is electrically connected to a printed circuit board on which the operation buttons 25 are supported through an electrical connection means that electrically connects the hinge portion 21b and the upper case 24. Yes. Therefore, by rotating the lid body 22 around the hinge 21, the lid body 22 can be opened and closed with respect to the exterior body 20 while maintaining the electrical connection between the liquid crystal display 26 and the printed circuit board. it can.

An opening window 27 through which the disk cartridge 70 is inserted and removed is provided on the side surface of the outer package 20, and the opening window 27 can be opened and closed by an opening / closing plate 28 that is rotatably supported by the upper case 24. ing. An insertion port 31 of the mechanical deck 30 is disposed inside the opening / closing plate 28, and the disk cartridge 70 is inserted into the exterior body 20 through the opening window 27 by pushing the opening / closing plate 28 with the disk cartridge 70. 7
0 is automatically installed in the mechanical deck 30. Below the opening window 27 is a mechanical deck 3.
A discharge button 29 for discharging the disk cartridge 70 loaded at 0 is provided so as to protrude sideways.

As shown in FIG. 2, the mechanical deck 30 includes a mechanical chassis 32 having a rectangular box shape whose upper surface and front surface are opened, and a slider 33 that is housed in the mechanical chassis 32 and is slidably held in the front-rear direction. And a cartridge holder 34 accommodated inside the slider 33 and supported so as to be movable in parallel with the mechanical chassis 32 in the vertical direction. Guide grooves 35 extending in the vertical direction are provided on the front and rear sides (total of four places) on both side surfaces of the mechanical chassis 32, and the cam pieces 3 provided on the cartridge holder 34 are provided in these guide grooves 35.
6 (a total of four) are engaged so as to be movable in the vertical direction. Further, the cartridge holder 34
Each of the cam pieces 36 is also engaged with cam grooves 37 (total of four locations) provided on the slider 33 and extending obliquely in the vertical direction.

Note that reference numeral 40 shown in FIG. 2 denotes a shutter release lever for opening the shutter 71 of the disk cartridge 70. The shutter release lever 40 has an engaging roller 41 that engages with a notch of the shutter 71 of the inserted disc cartridge 70 in the front portion 40 a, and the base portion on the opposite side is rotatable to the upper surface of the cartridge holder 34. It is supported by. The shutter release lever 40 is normally urged forward by the wire spring 42, and the engagement roller 41 is located at the insertion port 31. Reference numeral 43 denotes an arc groove for allowing the movement of the tip 40 a of the shutter release lever 40.

The mechanical deck 30 having such a configuration is in a position in which the slider 33 is retracted before the disc cartridge 70 is inserted, and in a position where the upper end portion of the cam groove 37 overlaps the guide groove 35 of the mechanical chassis 32. is there. Therefore, the cartridge holder 34 having the cam piece 36 whose position is regulated by the guide groove 35 and the cam groove 37 is pushed up by the slider 33 and is in the upper position. The opening on the front side of the cartridge holder 34 constitutes the insertion port 31 of the mechanical deck 30.

At this time, although not shown in the drawing, a return spring is stretched between the slider 33 and the mechanical chassis 32, and the slider 33 is supported by a stopper arm rotatably provided on the back surface of the mechanical chassis 32. It is detachably engaged and supported. Accordingly, the slider 33 is always urged forward by the spring force of the return spring, while the stopper arm prevents the slider 33 from moving forward.

From this state, when the disc cartridge 70 is inserted into the insertion slot 31 of the cartridge holder 34 and the engagement of the slider 33 is released by pressing the stopper arm at its tip and rotating it backward, the spring force of the return spring causes The slider 33 moves forward.
As a result, the cam groove 37 of the slider 33 moves forward, and the cam groove 37 overlapping the guide groove 35 of the mechanical chassis 32 moves to the lower end side. Therefore, the cam piece 36 is guided to the cam groove 37 to move to the lower end side, and thereby the cartridge holder 34 is moved in parallel so as to be pulled down to the mechanical chassis 32 side.

As a result, the disk cartridge 70 is mounted in the mechanical deck 30, and at this time, the shutter 71 is opened, and the disk accommodated therein is loaded into the mechanical chassis 32. The loading operation is completed. At this time, an optical pickup similarly mounted on the mechanical chassis 32 faces the opening of the disk cartridge 70, thereby enabling reproduction of information recorded on the optical disk.

On the other hand, when the disk cartridge 70 is removed from the mechanical deck 30, the eject button 29
You can press. In this case, when the discharge button 29 is pressed, the slider 33 located behind the push button 29 is pushed in the depth direction by the discharge button 29, and the cam groove 37 moves rearward by the movement of the slider 33, so that the guide groove of the mechanical chassis 32 is moved. A cam groove 37 that overlaps 35 moves to the upper end side.
Therefore, the cam piece 36 is guided to the cam groove 37 and moves to the upper end side, whereby the cartridge holder 34 is pushed up and moved parallel to the mechanical chassis 32.

At the same time, the stopper arm rotates forward to engage and hold the slider 33, and
Due to the biasing force of the shutter release lever 40 due to the spring force of the wire spring 42, the disk cartridge 70 is pushed forward to such an extent that the tip can be picked, and the tip protrudes from the opening window 27.

The mechanical deck 30 having such a configuration is elastically supported by the exterior body 20 via a plurality of vibration isolation members. 1st Example of this vibration isolator is expanded and shown in FIGS. The vibration isolator 50 of the first embodiment is manufactured by punching a foamed plate-like foam material. As a material of the vibration isolator 50, any material including foam may be used.
Plastic foam (for example, polyurethane foam, epoxy resin foam, silicone foam, etc.) and rubber foam (for example, natural rubber foam, styrene-butadiene rubber foam, nitrile rubber foam, etc.) can be applied.

The anti-vibration member 50 formed by punching from such a foam material is composed of a block body slightly elongated in the lateral direction, and the engagement hole 5 extending in the lateral direction for attaching to the mechanical deck 30 at the center.
1 is formed. The four surfaces excluding the front and rear surfaces of the vibration isolator 50, that is, the upper and lower surfaces and the left and right side surfaces are allowed to elastically deform in the front and rear, left and right and up and down directions of the vibration isolator 50, and the spring constant is set to a desired value. Arc-shaped notches 52, 53, 54, 55 are provided for setting the values. Furthermore, the lower end of each of the vibration-proof members 50 in the lateral direction is rounded into a circular arc shape to further adjust the spring constant.

In order to attach the vibration isolating member 50 having such a configuration to the mechanical deck 30, arm members 60 are provided on both front and rear sides of the mechanical chassis 32 as shown in FIG.
As shown in FIGS. 3 and 4, the arm member 60 includes a positioning portion 61 for positioning the vibration isolating member 50 at a predetermined position, and an engaging portion 6 provided continuously at the tip of the positioning portion 61.
2 and an insertion portion 63 provided continuously at the tip of the engaging portion 62.
And the engaging part 62 is formed in the shape and magnitude | size corresponding to the said engagement hole 51 so that it may fit in the engagement hole 51 of the vibration proof member 50, and each surface of the insertion part 63 on the upper and lower sides and right and left Are provided with retaining claws 64, 65, 66, 67.

Further, the lower case 23 and the upper case 24 are provided with a vibration isolating member 5 fixed to the mechanical chassis 32.
A fixing member 56 for preventing the movement of 0 and elastically supporting the mechanical chassis 32 on the exterior body 20 is provided. The fixing member 56 includes a pair of lower frame members 57 and 57 provided on the lower case 23, and a pair of upper frame members 58 and 58 provided on the upper case 24 so as to face the lower frame members 57 and 57. It is composed of Each of the lower frame body 57 and the upper frame body 58 has a U-shape, and is disposed so that the concave sides thereof face each other, thereby accommodating the vibration isolating member 50 inside them. A space is formed.

  As a material of the mechanical chassis 32, for example, a synthetic resin such as ABS resin or polyacetal (POM) is suitable, but a metal material such as a steel plate or an aluminum alloy can also be used.

The vibration isolating member 50 having the above configuration can be easily attached to the mechanical deck 30 by performing the following assembling work. That is, the engagement hole 51 of the vibration isolating member 50 is formed in the arm member 6.
It is inserted so as to face the insertion portion 63 of 0, and is engaged with the engaging portion 62. Thereby, the vibration isolating member 5
0 is fitted and held on the arm member 60 in a state where the positioning portion 61 is positioned, and the claw bodies 64 to 67 provided on the four surfaces of the insertion portion 63 prevent the arm member 60 from coming off.

After attaching the necessary number of vibration isolating members 50 to the necessary portions (four in this embodiment) of the mechanical deck 30 in this way, the lower portions of the respective vibration isolating members 50 are fitted into the lower frame body 57 of the lower case 23. .
Next, the upper case 24 is overlaid on the lower case 23, so that each upper frame body 58 is fitted into the upper portion of the vibration isolation member 50. Accordingly, the vibration isolating member 50 is positioned with respect to the exterior body 20 by the fixing member 56 composed of the lower frame body 57 and the upper frame body 58, and is fixed in all directions of the front-rear direction, the left-right direction, and the up-down direction. . As a result, the mechanical deck 30 is supported in a state of being floated from below by the lower case 23 via the four vibration isolation members 50.
And the fluctuation | variation by the bending of the upper part of the vibration isolator 50 is prevented by the upper frame body 58 of the upper case 24. FIG.

In such an anti-vibration structure of the mechanical deck 30, when an external force is applied to the exterior body 20, the anti-vibration member 50 absorbs or attenuates external vibrations to prevent the vibrations from being transmitted to the mechanical deck 30. Can be reduced.

In this case, in the present embodiment, a plate-like foam material that is foam-molded is used as the material of the vibration isolation member 50. Therefore, the spring constant of the vibration isolation member 50 is made as much as possible while maintaining a certain degree of hardness. Can be small. Therefore, it is possible to reliably absorb external vibrations and reliably prevent the influence of the vibrations from being exerted on the mechanical deck 30 or to effectively suppress the transmitted vibrations. Moreover, since the vibration isolating member 50 is formed by punching, it can be manufactured at a lower cost than conventional rubber molded products, and its assemblability can be improved.

6 and 7 show another embodiment of the vibration isolator of the present invention. The anti-vibration member 80 of the second embodiment shown in FIG. 6 is provided with slits 82, 82 directed toward the engagement hole 81 provided in the center portion at approximately the center of the upper and lower surfaces and the left and right side surfaces of the block body, Adjacent slits 82,
In this structure, rectangular through holes 83 and 84 are provided at four corners partitioned by 82.
In this case, since the engaging hole 81 of the vibration isolating member 80 is formed slightly offset toward the upper surface side, the height of the through hole 84 positioned on the lower side is slightly higher than the height of the through hole 83 positioned on the upper side. Is set.

In the vibration isolator 80 of the second embodiment, a slit 82 is provided at the center of each surface and through holes 83 and 84 are provided at the four corners, so that the slit 82 and the through holes 83 and 84 allow the vertical direction, the left and right direction, and The elastic deformation in the front-rear direction is allowed, and adjustment is made so as to obtain a predetermined spring constant while lowering the rigidity of the entire block body.

Further, the vibration isolating member 90 of the third embodiment shown in FIG. 7 is provided with L-shaped through grooves 92 and 93 at the four corners of the block body so as to surround the engagement hole 91 in the center portion. In this case, the shape of the through-grooves 92 and 93 allows elastic deformation in the vertical direction, the horizontal direction, and the longitudinal direction, and is configured to reduce the rigidity of the entire block body to a predetermined spring constant. .

As described above, the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, reproduction of information recorded in advance on an information recording medium as a specific example of an electronic device is dedicated. Although the example applied to the optical disk reproducing apparatus has been described, it is needless to say that the present invention can also be applied to a magneto-optical disk recording / reproducing apparatus that can freely record and reproduce information on an information recording medium, and other electronic devices. As described above, the present invention can be variously modified without departing from the spirit of the present invention.

As described above, according to the vibration isolator of the present invention, the vibration isolating member is formed by processing from the foamed plate-like foam material, and therefore has the same anti-vibration characteristics as the conventional anti-vibration member. The vibration isolation member can be manufactured easily and inexpensively, and the mechanical deck can be reliably elastically supported on the exterior body by a vibration isolation member with a small spring constant, effectively absorbing or attenuating vibration input from the outside. Thus, it is possible to provide a vibration isolator capable of improving the vibration isolating characteristics.

In addition, according to the vibration isolator of the present invention, since the foam-molded plate-shaped foam material is processed and molded, a vibration isolator having a small spring constant and excellent vibration isolating characteristics can be obtained easily and inexpensively. Can be manufactured.

1 is an external perspective view of an optical disc reproducing apparatus to which a vibration isolator according to an embodiment of the present invention is applied. It is a perspective view which shows one Example of the mechanical deck incorporated in the optical disk reproducing | regenerating apparatus of FIG. It is a perspective view which shows the state which mounts | wears with the vibration proof member on the arm member of the mechanical deck which concerns on this invention. It is sectional drawing which expands and shows the principal part of FIG. It is a perspective view which shows 1st Example of the vibration isolator of this invention. It is a perspective view which shows 2nd Example of the vibration isolator of this invention. It is a perspective view which shows 3rd Example of the vibration isolator of this invention. It is sectional drawing which shows an example of the conventional vibration isolator. It is sectional drawing which shows the other example of the conventional vibration isolator.

Explanation of symbols

20 exterior body, 22 lid body, 23 lower case, 24 upper case, 27 opening window, 30 mechanical deck, 31 insertion slot, 32 mechanical chassis, 33 slider, 34
Cartridge holder, 40 Shutter release lever, 50, 80, 90 Anti-vibration member, 5
1, 81, 91 engagement hole, 56 fixing member, 60 arm member, 62 engagement portion, 7
0 disc cartridge, 82 slit, 83, 84 through hole

Claims (4)

In a vibration isolating apparatus in which a vibration isolating member is interposed between a mechanical deck and an exterior body, the mechanical deck is elastically supported by the exterior body, and a fixing member is provided on the exterior body to prevent the vibration isolating member from moving. ,
The vibration-proof member comprises a block body provided with an engagement hole that is engaged so that an arm member provided on the mechanical deck passes through a foamed plate-like foam material.
Through holes that are provided with slits on each surface of the block body excluding the surface on which the engagement holes are provided, and that pass through the four corners of the surface through which the engagement holes are penetrated in the same direction as the penetration direction of the engagement holes. An anti-vibration device characterized by comprising: An anti-vibration device in which a vibration isolating member is interposed between the mechanical deck and the exterior body, the mechanical deck is elastically supported by the exterior body, and the exterior body is provided with a fixing member that prevents the vibration isolating member from moving. In
The vibration-proof member comprises a block body provided with an engagement hole that is engaged so that an arm member provided on the mechanical deck passes through a foamed plate-like foam material.
An anti-vibration device comprising L-shaped through holes penetrating in the same direction as a through direction of the engagement holes so as to surround the engagement holes at four corners of a surface of the block body where the engagement holes are provided. apparatus. A vibration isolating member interposed between the mechanical deck and the exterior body,
It consists of a block body provided with an engagement hole that engages so that the arm member provided in the mechanical deck penetrates the foamed plate-like foam material,
Through holes that are provided with slits on each surface of the block body excluding the surface on which the engagement holes are provided, and that pass through the four corners of the surface through which the engagement holes are penetrated in the same direction as the penetration direction of the engagement holes. An anti-vibration member characterized by comprising: A vibration isolating member interposed between the mechanical deck and the exterior body,
It consists of a block body provided with an engagement hole that engages so that the arm member provided in the mechanical deck penetrates the foamed plate-like foam material,
An anti-vibration device comprising L-shaped through holes penetrating in the same direction as a through direction of the engagement holes so as to surround the engagement holes at four corners of a surface of the block body where the engagement holes are provided. Element.

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