JP5118519B2 - Viscous fluid filled damper - Google Patents

Description

  The present invention relates to a disk shape such as a digital versatile disk (DVD), a compact disk (CD), and a hard disk drive (HDD) used for audio equipment including in-vehicle use and consumer use, video equipment, information equipment, and various precision equipment. The present invention relates to a vibration damping technique for a disk device that reproduces a recording medium (hereinafter referred to as a disk) or a vehicle-mounted electronic control device, and more particularly to a viscous fluid-filled damper that attenuates vibrations of these devices.

  The disk device is a precision device that reproduces information on a disk that is rotated at high speed by a motor. For this reason, reproduction errors are likely to occur due to internal vibrations and external vibrations, and it is necessary to prevent malfunctions caused by these vibrations. Therefore, a coil spring and a viscous fluid-filled damper are provided in a vibration transmission path between a support body such as a housing and a supported body such as a mechanical chassis built in the housing and configured by a motor, a disk table, or the like. It is customary to attach and support the vibration isolation of the mechanical chassis.

  One conventional example of such a viscous fluid-filled damper 1 is, as shown in FIG. 13, for example, in which the flexible portion 3 of the sealed container 2 is fixed to a hard mounting shaft 5 provided in the mechanical chassis 4 and sealed. The lid portion 6 of the container 2 is fixed to the housing 7 with an attachment screw N and attached between the mechanical chassis 4 and the housing 7. On the other hand, the other end of the suspension spring 8 having one end attached to the housing 7 is attached to the mechanical chassis 4 and is supported in a floating state inside the housing 7. The disk device 9 elastically supports the mechanical chassis 4 in a floating state inside the housing 7 by using the viscous fluid-filled damper 1 and the suspension spring 8 together (Patent Documents 1 and 2).

  The viscous fluid-filled damper 1 has a configuration in which a viscous fluid 10 such as silicone oil is sealed in a sealed container 2 as shown in FIG. The sealed container 2 has one end side of a cylindrical peripheral wall portion 11 made of a hard thermoplastic resin sealed with a flexible portion 3 made of a thermoplastic elastomer, and the other end side with a flange is made of the same material as the peripheral wall portion 11. Sealed with a lid 6 made of thermoplastic resin. The flexible portion 3 is formed with a bottomed cylindrical stirring tube portion 12, and the stirring tube portion 12 is provided with an accommodation recess 13. The peripheral wall portion 11 and the flexible portion 3 are fixed by heat fusion by two-color molding, and the peripheral wall portion 11 and the lid portion 6 are fixed by ultrasonic fusion.

The vibration damping effect of the viscous fluid-filled damper 1 is such that when vibration is applied to the disk device 9, the stirring cylinder portion 12 integrated with the mounting shaft 5 inserted into the receiving recess 13 is interlocked in the vertical and horizontal directions (three-dimensional direction). It is exhibited by the viscous resistance generated by stirring the viscous fluid 10 enclosed in the closed container 2.
JP 2000-220681 A JP 2001-57068 A

  In such a viscous fluid-filled damper 1, since the thermoplastic material is used for the sealed container 2, the flexible portion 3, the peripheral wall portion 11, and the lid portion 6 can be formed in a short time. Since the peripheral wall portion 11, the peripheral wall portion 11 and the lid portion 6 are also fixed by heat fusion and ultrasonic fusion during molding as described above, there is an advantage that the production efficiency is high. However, the thermoplastic elastomer has a low degree of freedom in material selection, and it is difficult to select a material having properties such as vibration damping performance, vibration durability, gas permeation resistance, and temperature dependency.

  Therefore, there is a method in which the flexible portion 3, the peripheral wall portion 11, and the lid portion 6 constituting the sealed container 2 are formed of the same material thermosetting elastomer. Since the thermosetting elastomer does not require the members to be fused, a material having excellent vibration damping performance, vibration durability, gas permeation resistance, temperature dependency, and the like can be selected. However, since the adhesive is used for fixing the members, the production time is long and the cost is increased. In addition, if the viscous fluid 10 adheres to the fixing surface between the members when the viscous fluid 10 is filled in the sealed container 2, the peripheral wall portion 11 and the lid portion 6 cause poor adhesion and cause the viscous fluid 10 to leak. End up.

  The present invention has been made against the background of the prior art as described above. That is, the present invention has an object to provide a viscous fluid-filled damper that can expand the degree of freedom in selecting the material of the sealed container, can be manufactured with high production efficiency, and can avoid leakage of viscous fluid. .

  In order to achieve the above object, the present invention is configured as follows. That is, the present invention includes a sealed container composed of a container body and a lid that closes the open end of the container body, and a viscous fluid sealed in the sealed container, and the sealed container includes a support body and a supported body. A viscous fluid-filled damper that damps vibration of the supported body by the viscous resistance of the viscous fluid, and has a flange that protrudes outward at the opening end of the container body, and a lid on the outer periphery of the container body An annular sealing member that sandwiches the flange portion between the projection portion and the flange portion, and a projection portion that bulges in a circumferential shape is provided on the flange portion, and at least one of the sealing member or the cover body is provided on the flange portion. In addition, an engagement groove into which the protruding portion enters is provided, and the flange portion having the protruding portion is clamped in a compressed state by fixing the sealing member and the lid body, thereby sealing the opening end of the container body in a liquid-tight manner. A viscous fluid-filled damper is provided.

In the present invention, the flange provided at the open end of the container body is compressed and sandwiched between the sealing member and the lid, and the container body is fixed to the lid. For this reason, the opening end of the container body can be sealed with a lid without fixing by fusion as in the prior art, and it is not necessary to consider a combination that can be fused with respect to the material of the container body and the lid. it can. Therefore, the degree of freedom in selecting the material of the sealed container can be increased, and a sealed container corresponding to the performance required for the viscous fluid-filled damper can be realized.
Further, a protrusion that bulges in a circumferential shape is formed on the collar, and an engagement groove into which the protrusion is inserted is provided in at least one of the sealing member or the lid. If it does in this way, positioning of a collar with respect to a sealing member or a lid can be correctly performed by uneven projection engagement of a projection part of a collar and an engagement groove provided in a sealing member or a lid. In addition, the contact area between the collar portion and the sealing member or the lid can be increased by the concave-convex engagement, thereby making it difficult for the liquid to leak.
In the uneven engagement between the protrusion and the engaging groove, the protrusion is engaged when the depth of the engaging groove is shallower than the height of the protrusion, that is, when the sealing member and the lid are fixed. By providing the protrusion with a compression allowance that is only compressed from the groove, the contact pressure of the protrusion against the inner surface of the engagement groove can be increased by the compressed protrusion. Therefore, the liquid tightness of the sealed container can be further enhanced.

  Moreover, the opening end of the container main body can be sealed with a lid body with or without using an adhesive. For example, when the container main body is formed of a thermosetting elastomer, the container main body does not have to be fixed to the lid body with an adhesive, so that the production time can be shortened and the cost can be reduced. Furthermore, in the prior art, when a viscous fluid adheres to the adhesion surface when the opening end of the container body is sealed with a lid using an adhesive, the viscous fluid may leak due to poor adhesion. However, in the present invention, such an inconvenience does not occur because the open end of the container body is closed by the fixing of the sealing member and the lid.

  In the viscous fluid-filled damper according to the present invention, a plurality of locking holes arranged circumferentially in the collar portion are formed, and locking protrusions that lock the locking holes on at least one of a sealing member or a lid Can be provided. In this case, the container main body can be made difficult to come out of the sandwiched state between the sealing member and the lid body by the engagement between the locking hole and the locking projection. Moreover, positioning of the collar part with respect to the sealing member or the lid can be performed accurately by the locking of the locking hole and the locking projection. In particular, if the locking projections are provided on both the sealing member and the lid, and the locking projections are fixed in the locking holes of the collar, the container body, the sealing member, and the lid can be accurately positioned. At the same time, it can be firmly assembled by physical fitting between the three parties, making it difficult to remove the collar from between the sealing member and the lid.

  In the viscous fluid-filled damper according to the present invention, the locking hole can be provided on the outer edge side of the flange portion from the projection portion. In this way, since the protrusion provided on the inner edge side of the collar is compressed and held, it is possible to make it difficult for the viscous fluid to bleed outward along the collar and improve the liquid tightness of the sealed container. Can do.

  In the viscous fluid-filled damper according to the present invention, the protrusion can be provided on the outer edge side of the flange portion from the locking hole. If it does in this way, since it locks with a sealing member and a lid with the locking hole provided in the inner edge side of the collar part, when a container main part changes, it may make it difficult to shift a collar part inward. It is possible to make it difficult to remove the collar from between the sealing member and the lid.

  In the viscous fluid-filled damper according to the present invention, a pressing protrusion for further compressing the protrusion can be provided on at least one of the sealing member and the lid. If it does in this way, a projection part can be compressed strongly and the sealing pressure of an airtight container can be raised. Therefore, the liquid tightness of the sealed container is increased and the viscous fluid can be made difficult to leak.

In the viscous fluid-filled damper according to the present invention, the lid body can be provided with a protruding wall portion that protrudes to the side of the inner peripheral surface on the opening end side of the container body and that is separated from the inner peripheral surface. Thus, if a protruding wall part is provided in the inner peripheral surface by the side of the opening end in a container main body, a deformation | transformation to an inner side can be suppressed by a protruding wall part about the opening end side of a container main body. Therefore, the opening end side of the container main body can be hardly deformed inward, and the flange provided at the opening end can be reliably compressed and clamped.
When the container body, sealing member, and lid are assembled, if the inner peripheral surface of the container body and the protruding wall of the lid come into contact and rub, the container body is deformed and the collar is pulled inward. In some cases, the collar portion cannot be pinched accurately between the sealing member and the lid. However, since the protruding wall portion is separated from the inner peripheral surface of the container main body as in the present invention, the inner peripheral surface of the container main body and the protruding wall portion of the lid can be made difficult to rub when assembled. Can be accurately sandwiched between the sealing member and the lid.

  In the viscous fluid-filled damper having a protruding wall portion on the lid, the protruding wall portion can be formed in an annular shape and a deaeration gap can be provided on the protruding wall portion. In the manufacture of the viscous fluid-filled damper, after the viscous fluid is injected into the container body with the open end facing upward, the lid is placed over the open end and sealed. When the lid having the protruding wall portion is put on the opening end, if the air in the space surrounded by the annular protruding wall portion is also enclosed together, the vibration damping effect may be reduced. However, if a gap for deaeration is provided in the protruding wall as in the present invention, the lid can be covered on the opening end while releasing air in the space surrounded by the annular protruding wall from the gap. it can. Therefore, it is possible to make it difficult to enclose air when the cover body having the protruding wall portion is put on the opening end and sealed.

  In the viscous fluid-filled damper according to the present invention, the sealing member and the lid are formed of a hard resin material that can be ultrasonically welded, and are fixed to the sealing member and the lid by ultrasonic welding. Can be provided. In this way, the sealing member and the lid can be firmly fixed. In addition, since ultrasonic fusion can be performed in a short time, the production efficiency can be increased.

According to the viscous fluid-filled damper of the present invention, the protrusion of the flange portion is compressed and sandwiched between the sealing member and the lid body to fix the container body to the lid body. Such a fusionable combination can be eliminated. Therefore, the degree of freedom in selecting the material of the sealed container can be increased, and a sealed container corresponding to the performance required for the viscous fluid-filled damper can be realized.
Further, since the container body does not have to be fixed to the lid with an adhesive, the production time can be shortened and the cost can be reduced.
And by the uneven | corrugated engagement with the projection part of a collar part, and the engagement groove | channel provided in the sealing member or the cover body, the contact area of a collar part, a sealing member, or a cover body can be increased, and it is hard to leak. can do.

  Furthermore, if the locking protrusion of the sealing member or the lid is locked to the locking hole of the collar, the collar can be accurately positioned with respect to the sealing member or the lid, and the collar is sealed. It is possible to make it difficult to come out from between the stop member and the lid.

  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.

1st Embodiment [FIGS. 1-4 (A)]:
A viscous fluid-filled damper 14 according to the first embodiment is shown in FIG. 1, constituent members of the viscous fluid-filled damper 14 are shown in FIGS. 2 and 3, and a partially enlarged sectional view of the constituent members is shown in FIG. The viscous fluid-filled damper 14 according to the first embodiment has a structure in which the viscous fluid 10 is sealed in the sealed container 15. The sealed container 15 includes a container body 16, a sealing member 17, and a lid body 18.

The container body 16 is made of a rubber-like elastic body, more specifically, butyl rubber, and has a bowl-like shape that is hollow and has one end opened. A peripheral wall portion 19, a flexible portion 20, and a central attachment portion 21 are formed from the opening end 16 a side, and a flange portion 22 is provided at the lower end of the peripheral wall portion 19.
Of these, the flange portion 22 protruding outward at the lower end of the peripheral wall portion 19 is provided over the entire circumference of the peripheral wall portion 19, and the protrusion 19 a protruding outward is also provided over the entire periphery of the upper end portion. . An annular engagement groove portion 19b that engages with an engagement wall portion 17a of the sealing member 17 to be described later is formed between the flange portion 22 and the protrusion 19a. A flexible portion 20 thinner than the peripheral wall portion 19 is formed so as to close the upper end side of the peripheral wall portion 19. The flexible portion 20 is formed in a dome shape having a bellows cross section, and a central mounting portion 21 is provided at the center. The central attachment portion 21 is formed in a cylindrical shape with a bottom and protrudes toward the inside of the container body 16. The mounting shaft 5 protruding from the mechanical chassis 4 is inserted into the housing recess 21 a of the central mounting portion 21, and the container body 16 of the sealed container 15 is fixed to the mechanical chassis 4. Such a central attachment portion 21 also functions as an agitation portion for agitating the viscous fluid 10 in conjunction with the attachment shaft 5 inserted into the accommodating recess 21a. The vibration is attenuated by the viscous resistance generated by stirring the viscous fluid 10.
The above-mentioned collar portion 22 bulges in the thickness direction and has a plurality of circumferential protrusions 22a in plan view, and a plurality of circumferentially arranged plan views through the thickness on the outer edge side of the projections 22a. Eight) locking holes 22b are formed. The protruding portion 22a bulges upward from the upper surface of the flange portion 22 with a clearance from the peripheral wall portion 19, and the tip is formed in a semicircular shape in cross section. And the rib part 22c is provided in the lower surface of the collar part 22 on the same periphery as this protrusion part 22a, and this rib part 22c is formed in the cross-sectional semicircle shape same as the front-end | tip of the protrusion part 22a. In other words, the height of the protrusion 22a is set higher than the height of the rib 22c. Each locking hole 22b is formed in an equivalent arc shape.

The sealing member 17 is formed in a ring shape from a thermoplastic hard resin, more specifically, a polypropylene resin, and is a separate part from the container body 16 described above. On the inner edge of the upper end of the sealing member 17, an engaging wall portion 17 a that protrudes to the side of the outer peripheral surface of the peripheral wall portion 19 of the container body 16 is formed in an endless annular shape, and engages with the engaging groove portion 19 b described above. ing. Such engagement wall portion 17a and engagement groove portion 19b are merely in contact with each other and are not fixed by an adhesive or the like.
In addition, on the inner edge side of the lower end of the sealing member 17, a depressed step surface portion 17 b that sandwiches the flange portion 22 described above is provided, and the step size is formed to be equal to the thickness of the flange portion 22. An engagement groove 17c that engages with the protrusion 22a of the flange portion 22 is provided on the inner edge side of the stepped surface portion 17b. The depth dimension of the engaging groove 17c is smaller than the height dimension of the protrusion 22a. The lower end of the sealing member 17 excluding such a stepped surface portion 17b constitutes a fixing surface portion 17d that is fixed to the lid 18 described later. Both the protrusion 22a and the rib 22c are portions that protrude from the surface of the flange 22, but in the description of the present specification and the claims, the protrusions enter the engagement groove so that the liquid tightness and the container body It is a part that forms difficulty in removal, that is, a part that forms an uneven structure between the protrusion and the engagement groove, and the rib part is liquid-tight with respect to a general surface that does not have an engagement groove, and the container body is removed. It is a part that forms a wedge.

  The lid 18 is formed in a disk shape with a thermoplastic hard resin, more specifically, a polypropylene resin. A portion of the lid 18 facing the fixing surface portion 17d of the sealing member 17 constitutes a fixing surface portion 18a, and the fixing surface portions 17d and 18a are fixed together by ultrasonic fusion, and the container body 16 is fixed. The opening end 16a is closed. Furthermore, a locking projection 18b that locks with each locking hole 22b of the flange portion 22 is provided, and the height dimension of the locking projection 18b is formed to be equal to the thickness of the flange portion 22. An attachment piece 18c that protrudes outward in the shape of a tongue piece is formed on the lid body 18, and an attachment hole 18d through which the attachment screw N is inserted is formed in the attachment piece 18c. When the mounting screw N is inserted into the mounting hole 18 d and then screwed into the screw hole of the housing 7, the head of the mounting screw N is engaged with the lid body 18, and the lid body 18 of the sealed container 15 is secured to the housing 7. Fixed to.

  Here, the material of each member which comprises the viscous fluid enclosure damper 14 of this embodiment is demonstrated. In addition, the following description is common also to each below-mentioned embodiment.

  The “rubber-like elastic body” of the container body 16 is made of a material having a damping effect, and natural rubber and thermoplastic elastomer are preferable in addition to the synthetic rubber such as butyl rubber employed in this embodiment. For example, in addition to butyl rubber, synthetic rubber includes styrene butadiene rubber, chloroprene rubber, nitrile rubber, urethane rubber, silicone rubber, fluorine rubber, acrylic rubber, and the like. A thermoplastic elastomer, a urethane type thermoplastic elastomer, a vinyl chloride type thermoplastic elastomer, etc. are mentioned.

  The “hard resin” of the sealing member 17 and the lid 18 is a polypropylene employed in the present embodiment due to required performance such as mechanical strength, heat resistance, durability, dimensional accuracy, reliability, and weight reduction and workability. In addition to thermoplastic resins such as resins, thermosetting resins can be used. For example, in addition to the polypropylene resin employed as the sealing member 17 and the lid 18 of the present embodiment, polyethylene resin, polyvinyl chloride resin, polystyrene resin, acrylonitrile / styrene / acrylate resin, acrylonitrile / butadiene / styrene resin, polyamide Resin, polyacetal resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyphenylene oxide resin, polyphenylene ether resin, polyphenylene sulfide resin, polyurethane resin, liquid crystal polymer, etc. Thermosetting resin is epoxy resin, urethane resin Etc. Moreover, when the hard resin which has impact absorption property is used, the buffering effect by the member can be improved.

  The material of the viscous fluid 10 is preferably a liquid or a liquid to which solid particles that do not react and dissolve in the liquid are added. For example, liquids such as silicone oils, paraffinic oils, ester oils, liquid rubbers, or the like added with solid particles that do not react and dissolve in these liquids can be used. Of these, silicone-based oils are preferred as liquids due to required performance such as temperature dependency, heat resistance, and reliability. Specifically, dimethyl silicone oil, methyl phenyl silicone oil, methyl hydrogen silicone oil, fluorine-modified silicone are preferred. Oils can be used, and solid particles that do not react or dissolve in these silicone oils include silicone resin powder, polymethylsilsesquioxane powder, wet silica, dry silica, glass beads, glass balloons, etc. These surface-treated products can be used, and these can be used alone or in combination.

  An example of a method for manufacturing the viscous fluid-filled damper 14 as described above will be described. First, a container body 16 made of butyl rubber is formed. Then, while engaging the engaging wall portion 17a of the sealing member 17 made of polypropylene resin, which is separately injection-molded, and the engaging groove portion 19b of the peripheral wall portion 19 of the container body 16, the step surface portion 17b of the sealing member 17 is engaged. The protrusion 22a of the flange 22 in the container body 16 is engaged with the groove 17c. Next, the viscous fluid 10 is injected into the container body 16. Finally, the locking projection 18b of the lid 18 is placed on the opening end 16a of the container body 16 while being locked to the locking hole 22b of the flange 22, and ultrasonic fusion is performed while the protrusion 22a of the flange 22 is compressed and sandwiched. Thus, the sticking surface portion 17d of the sealing member 17 and the sticking surface portion 18a of the lid 18 are fixed to obtain the viscous fluid-filled damper 14.

Finally, the operation and effect of the viscous fluid-filled damper 14 will be described.
According to the viscous fluid-filled damper 14, the container body 16 is fixed to the lid body 18 by compressing and holding the collar portion 22 having the protrusion 22a between the sealing member 17 and the lid body 18, for example as in this embodiment. Furthermore, the opening end 16a of the container body 16 made of butyl rubber can be sealed with a lid 18 made of polypropylene resin. Therefore, the degree of freedom in selecting the material of the sealed container 15 can be increased, and the sealed container 15 corresponding to the performance required for the viscous fluid-filled damper 14 can be realized.
Furthermore, since the engagement groove 17c that engages with the protrusion 22a of the flange 22 is provided in the sealing member 17, the contact surface between the protrusion 22a and the engagement groove 17c is generated by the uneven engagement, and the sealing member 17 is sealed. The contact area between the stop member 17 and the flange portion 22 is increased, and liquid leakage can be made difficult. Further, it is possible to make it difficult for the container body 16 to come out of the sandwiched state between the sealing member 17 and the lid 18. Further, the engagement of the protrusion 22a and the engagement groove 17c enables the positioning of the flange 22 with respect to the sealing member 17 accurately.
And since the depth of the engaging groove 17c is made smaller than the height of the projection part 22a, a compression margin arises in the projection part 22a and the projection part 22a can be compressed strongly. The compressed protrusion 22a can increase the contact pressure of the protrusion 22a against the inner surface of the engagement groove 17c, further improving the liquid tightness of the sealed container 15 and making the container body 16 more difficult to come off. it can. Further, a rib portion 22c is provided on the lower surface of the flange portion 22 on the same circumference as the protrusion portion 22a, and the rib portion 22c is compressed by the flat surface of the lid 18 so that the protrusion portion 22a is also strongly compressed from the lower surface side. This increases the liquid tightness and the difficulty of removing the container body 16.

  Moreover, since the opening end 16a of the container main body 16 can be sealed with the lid 18 without using an adhesive, the production time can be shortened and the cost can be reduced.

  The locking projection 18b of the lid 18 is locked to the locking hole 22b of the collar portion 22, and the sealing member 17 and the lid 18 face each other through the locking hole 22b. The wedge leading to the member 17 is driven into the container body 16. Therefore, it is difficult for the container body 16 to come off from the sandwiched state between the sealing member 17 and the lid 18. Further, since the locking projection 18b of the lid 18 is locked to the locking hole 22b of the flange 22, the positioning of the lid 18 with respect to the flange 22 can be performed accurately.

  Since the locking hole 22b of the flange portion 22 is provided on the outer edge side of the protrusion portion 22a, the protrusion portion 22a provided on the inner edge side of the flange portion 22 can be compressed and clamped, and the viscous fluid 10 is removed along the flange portion 22 It can be made difficult to bleed. Therefore, the liquid tightness of the sealed container 15 can be enhanced.

  The sealing member 17 and the lid 18 are formed of a hard resin material that can be ultrasonically fused, and the fixing surface portions 17d and 18a that are fixed to the sealing member 17 and the lid 18 by ultrasonic fusion are provided. The sealing member 17 and the lid 18 can be firmly fixed. In addition, since ultrasonic fusion can be performed in a short time, the production efficiency can be increased. The tip of the locking projection 18b can be fixed to the sealing member 17 by ultrasonic fusion.

First Modification of First Embodiment [FIG. 4B]:
In the viscous fluid-filled damper 14 of the first embodiment, an example in which the protrusion 22a is provided on the upper surface of the flange portion 22 and the rib portion 22c is provided on the lower surface is shown. However, in the viscous fluid-filled damper 23 of the first modification, FIG. As shown in FIG. 4, the projections 24a and 24a are provided on the upper and lower surfaces of the flange 24, and the locking hole 24b is formed on the outer edge side of the projection 24a. Further, a lid 25 is provided instead of the lid 18.

  Similarly to the lid body 18, the lid body 25 is configured such that a portion facing the fixing surface portion 17 d of the sealing member 17 constitutes the fixing surface portion 25 a, and a locking projection 25 b that locks with the locking hole 24 b of the flange portion 24. A mounting piece 25c that protrudes outward in the shape of a tongue piece and a mounting hole 25d through which the mounting screw N is inserted are provided. The difference from the lid 18 is that an engagement groove 25e that engages with the protrusion 24a of the flange 24 is provided inside the locking protrusion 25b. Similarly to the engagement groove 17c, the depth dimension of the engagement groove 25e is formed smaller than the height dimension of the protrusion 24a.

In this way, it is possible to realize the uneven engagement between the sealing member 17 and the flange 24 and the uneven engagement between the lid 25 and the flange 24.
Due to the uneven engagement, contact surfaces of the projections 24a and the engagement grooves 17c facing upward in the drawing and the projections 24a and the engagement grooves 25e facing downward in the drawing are generated, and the contact area between the sealing member 17 and the flange 22 increases. It can be made difficult to leak. Further, it is possible to make it difficult for the container main body to come out of the sandwiched state between the sealing member 17 and the lid body 25. Further, the engagement of the protrusion 24a with the engagement groove 17c and the engagement groove 25e makes it possible to accurately position the flange 24 with respect to the sealing member 17.
Since the depth of the engaging groove 25e is smaller than the height of the protruding portion 24a, that is, the compression margin is provided in the protruding portion 24a, the protruding portion 24a can be strongly compressed, and the engaging groove 25e The adhesion pressure of the protrusion 24a to the inner surface can be increased.

Second Modification of First Embodiment [FIG. 4C]:
In the viscous fluid-filled damper 14 of the first embodiment, an example in which the protrusion 22a is provided on the upper surface of the flange portion 22 and the rib portion 22c is provided on the lower surface is shown. However, in the viscous fluid-filled damper 26 of the second modification, FIG. As shown, a rib 27a is provided on the upper surface of the flange 27, and a protrusion 27b is provided on the lower surface, and a locking hole 27c is formed on the outer edge side of the protrusion 27b. Further, a lid 25 is replaced with the sealing member 17 instead of the lid 18, and a sealing member 28 is provided.

  In the same manner as the sealing member 17, the sealing member 28 has an endless annular engaging wall portion 28 a that engages with the engaging groove portion 19 b of the peripheral wall portion 19 on the inner edge of the upper end, and a flange portion 27 on the inner edge side of the lower end. The lower end of the sealing member 28 excluding the stepped surface portion 28b constitutes a fixed surface portion 28c that is fixed to the lid body 25. The difference from the sealing member 17 is that no engaging groove is provided in the stepped surface portion 28b.

  In this manner, the concave and convex engagement between the engagement groove 25e of the lid body 25 and the protrusion 27b of the flange 27 creates a contact surface between the protrusion 27b and the engagement groove 25e, and the sealing member 28 and the flange The contact area with the part 27 increases, and it can be made difficult to leak. Since the depth of the engaging groove 25e is shallower than the height of the protruding portion 27b, that is, because the protruding portion 27b is provided with a compression allowance, the protruding portion 27b can be strongly compressed, and the engaging groove 25e The adhesion pressure of the protrusion 27b to the inner surface can be increased. Further, since the rib portion 27a is compressed by the flat surface of the sealing member 28 on the upper surface of the flange portion 27, the protrusion 27b can be strongly compressed also from the upper surface side, and the liquid-tightness and the container main body are difficult to come off. Is increasing.

Third Modification of First Embodiment [FIG. 4D]:
In the viscous fluid-filled damper 14 of the first embodiment, the example in which the projecting portion 22a is provided on the upper surface of the flange portion 22 and the rib portion 22c is provided on the lower surface with a clearance from the peripheral wall portion 19 is shown. In the damper 29, as shown in FIG. 4D, a rib portion 30a is provided on the upper surface of the flange portion 30 without a gap from the peripheral wall portion 19, and a projection portion 30b is provided on the lower surface, and a locking hole 30c is provided on the outer edge side of the projection portion 30b. Forming. Further, a lid 31 is provided in place of the sealing member 17 in place of the sealing member 28 in place of the lid 18.

  The cover body 31 has a fixing surface portion 31 a that is opposite to the fixing surface portion 28 d of the sealing member 28, and has a locking protrusion 31 b that locks with the locking hole 30 c of the flange portion 30 and a tongue-like shape outward. And a mounting hole 31d through which the mounting screw N is inserted. The difference from the lid 18 is that an engagement groove 31e that engages with the protrusion 30b of the flange 30 is provided inside the locking protrusion 31b. The depth dimension of the engaging groove 31e is smaller than the height dimension of the protrusion 31b.

If it does in this way, it can make it hard to leak by the uneven | corrugated engagement with the engaging groove 31e of the cover body 31 and the projection part 30b of the collar part 30, and compresses the projection part 30b strongly by the compression margin of the projection part 30b. The protrusion 30b can be strongly compressed from the upper surface side by the rib 30a, and the liquid tightness can be improved. Further, since the rib portion 30a is provided on the upper surface of the flange portion 30 and the projection portion 30b is provided on the lower surface without any gap from the peripheral wall portion 19, the liquid tightness can be enhanced at the inner edge of the flange portion 30.
Further, since the rib portion 30a is provided on the upper surface of the flange portion 30 and the projection portion 30b is provided on the lower surface without any gap from the peripheral wall portion 19, the outer edge of the flange portion 30 can be brought closer to the opening end 16a side, and the flange portion 30 can be made smaller. can do. Therefore, the outer shape of the sealing member 28 and the lid 31 can be reduced, and the viscous fluid-filled damper 29 can be reduced in size.

Fourth Modification of First Embodiment [FIG. 5 (A)]:
In the viscous fluid-filled damper 14 of the first embodiment, an example in which the protrusion 22a is provided on the upper surface of the flange portion 22 and the rib portion 22c is provided on the lower surface is shown. However, in the viscous fluid-filled damper 32 of the fourth modified example, FIG. As shown in FIG. 4, the projections 24a and 24a are provided on the upper and lower surfaces of the flange 24, and the locking hole 24b is formed on the outer edge side of the projection 24a. Further, the sealing member 17 is replaced with a lid 18 by replacing the sealing member 33 with the lid 18.

As with the sealing member 17, the sealing member 33 has an endless annular engagement wall 33 a that engages with the engagement groove 19 b of the peripheral wall 19 on the inner edge of the upper end and a flange 24 on the inner edge side of the lower end. The recessed stepped surface portion 33b has an engaging groove 33c that engages with the protruding portion 24a of the flange 24 on the inner edge side of the stepped surface portion 33b. The lower end of the sealing member 33 excluding the stepped surface portion 33b is An adhering surface portion 33d adhering to the lid 34 is configured. The difference from the sealing member 17 is that a pressing protrusion 33e for compressing the protrusion 24a is provided on the bottom surface of the engaging groove 33c.
Similarly to the lid 18, the lid 34 is configured such that a portion facing the fixing surface 33 d of the sealing member 33 constitutes a fixing surface 34 a, and a locking protrusion 34 b that locks with the locking hole 24 b of the flange 24. An attachment piece 34c that protrudes outward in the shape of a tongue piece, an attachment hole 34d through which the attachment screw N is inserted, and an engagement groove 34e that engages with the protrusion 24a of the flange 24 are provided. The difference from the lid 18 is that a pressing protrusion 34f for compressing the protrusion 24a is provided on the bottom surface of the engagement groove 34e.

  In this way, the concave / convex engagement between the engagement groove 33c of the sealing member 33 and the protrusion 24a of the flange 24 and the uneven engagement between the engagement groove 34e of the lid 34 and the protrusion 24a of the flange 24 are performed. As a result, the contact area between the flange 24 and the sealing member 33 or the lid 34 can be increased, and liquid leakage can be made difficult. Further, since the pressing protrusions 33e and 34f are provided, the protruding portion 24a can be partially and strongly compressed, and the sealing pressure of the viscous fluid 10 and the difficulty of removing the container body can be increased. Therefore, the liquid tightness is increased and the viscous fluid 10 can be made difficult to leak.

Fifth Modification of First Embodiment [FIG. 5B]:
In the viscous fluid-filled damper 14 of the first embodiment, an example in which the protrusion 22a is provided on the upper surface of the flange portion 22 and the rib portion 22c is provided on the lower surface is shown. However, in the viscous fluid-filled damper 35 of the fifth modification, FIG. As shown by the upper and lower surfaces of the projections 36a, 36a and the outer edge of the projection 36a on the upper and lower surfaces of the flange 36, the upper and lower surfaces of the locking hole 36b and the inner edge of the projection 36a (the gap between the peripheral wall 19 and the projection 36a). Ribs 36c and 36c are formed on the surface. Further, a lid 25 is provided instead of the lid 18.

  In this manner, the concave / convex engagement between the engagement groove 17c of the sealing member 17 and the protrusion 36a of the flange 36, and the uneven engagement between the engagement groove 25e of the lid 25 and the protrusion 36a of the flange 36 are achieved. As a result, the contact area between the flange 36 and the sealing member 17 and between the flange 36 and the lid 25 can be increased, and liquid leakage can be made difficult. Since the depth of the engagement grooves 17c and 25e is smaller than the height of the protrusion 36a, that is, the protrusion 36a is provided with a compression allowance that enters the engagement groove 17c and the engagement groove 25e and is crushed. The part 36a can be strongly compressed, and the adhesion pressure of the protrusion 36a to the inner surfaces of the engagement grooves 17c and 25e can be increased. Further, since the rib portions 36c are provided on the upper and lower surfaces of the flange portion 36, compression is performed on the flat surface of the sealing member 28, so that the liquid tightness and the difficulty of removing the container body can be increased even at the inner edge of the flange portion 36. .

Sixth Modification of First Embodiment [FIG. 6 (A)]:
In the viscous fluid-filled damper 14 of the first embodiment, an example in which the locking projection 18b of the lid 18 is locked to the locking hole 22b of the flange 22 is shown, but in the viscous fluid-filled damper 37 of the sixth modified example, FIG. As shown in FIG. 6 (A), the sealing member 17 is replaced with the sealing member 38 and the lid 18 is provided with a lid 39.

As with the sealing member 17, the sealing member 38 has an endless annular engagement wall 38 a that engages with the engagement groove 19 b of the peripheral wall 19 on the inner edge of the upper end, and a flange 22 on the inner edge side of the lower end. The recessed stepped surface portion 38b has an engaging groove 38c that engages with the protruding portion 22a of the flange portion 22 on the inner edge side of the stepped surface portion 38b. The lower end of the sealing member 38 excluding the stepped surface portion 38b is An adhering surface portion 38d adhering to the lid 39 is configured. A difference from the sealing member 17 is that a locking projection 38e is provided on the outer edge side of the engaging groove 38c in the stepped surface portion 38d. The height dimension of the locking projection 38e is formed to be equal to the thickness dimension of the flange portion 22.
Similarly to the lid body 18, the lid body 39 is configured such that a portion facing the fixing surface portion 38 d of the sealing member 38 constitutes a fixing surface portion 39 a, and an attachment piece 39 b and an attachment screw N protruding outward in the shape of a tongue piece are provided. And a mounting hole 39c to be inserted. The difference from the lid 18 is that no locking projection is provided.

  In this way, it is possible to realize the concavo-convex engagement between the engaging groove 38c of the sealing member 38 and the protrusion 22a of the flange 22, and the contact surface of the sealing member 38 with the flange 22 meanders. The contact area is increased, and it is possible to make liquid leakage difficult. Since the depth of the engaging groove 38c is smaller than the height of the protruding portion 22a, that is, the compression margin is provided in the protruding portion 22a, the protruding portion 22a can be strongly compressed, and the engaging groove 38c The adhesion pressure of the protrusion 22a to the inner surface can be increased. Furthermore, since the locking projections 38e of the sealing member 38 are locked to the locking holes 22b of the flange 22, the positioning of the flange 22 relative to the sealing member 38 can be performed accurately. Further, since the sealing member 38 and the lid body 39 face each other through the locking hole 22b, a wedge leading from the sealing member 38 to the lid body 39 is driven into the container body 16 so that the container body 16 is sealed. It is difficult for the member 38 and the lid 39 to be removed from the sandwiched state. Further, when the fixing surface portion 38 d of the sealing member 38 and the fixing surface portion 39 a of the lid 39 are fixed by ultrasonic fusion, or separately from such fixing, the tip of the locking projection 38 b is extended beyond the lid 39. It can also be fixed by sonic fusion.

Seventh Modification of First Embodiment [FIG. 6B]:
In the viscous fluid-filled damper 14 of the first embodiment, an example is shown in which the locking protrusion 18b of the lid 18 is locked to the locking hole 22b of the flange 22, but the viscous fluid-filled damper 40 of the seventh modification is illustrated in FIG. As shown in FIG. 6B, the sealing member 17 is replaced with the lid 18 and the lid 42 is provided instead of the sealing member 17.

As with the sealing member 17, the sealing member 41 has an endless annular engagement wall portion 41 a that engages with the engagement groove portion 19 b of the peripheral wall portion 19 at the inner edge of the upper end, and a flange portion 22 at the inner edge side of the lower end. The recessed stepped surface portion 41b has an engaging groove 41c that engages with the protruding portion 22a of the flange portion 22 on the inner edge side of the stepped surface portion 41b, and the lower end of the sealing member 41 excluding the stepped surface portion 41b is An adhering surface portion 41d adhering to the lid 42 is configured. A difference from the sealing member 17 is that a locking projection 41e is provided on the outer edge side of the engaging groove 41c in the stepped surface portion 41d. The height dimension of the locking projection 41e is about half of the thickness dimension of the flange portion 22.
Similarly to the lid body 18, the lid body 42 is configured such that a portion facing the fixing surface portion 41 d of the sealing member 41 constitutes a fixing surface portion 42 a, and an attachment piece 42 c that protrudes outward in a tongue shape and an attachment screw N are provided. It has a mounting hole 42d to be inserted. What is different from the lid 18 is the height dimension of the locking projection 42b, which is formed to be about half the thickness dimension of the flange portion 22.

  In this way, it is possible to realize the concave-convex engagement between the engagement groove 41c of the sealing member 41 and the protrusion 22a of the flange 22, and the contact area between the flange 22 and the sealing member 41 increases. It can be made difficult to leak. Since the depth of the engaging groove 41c is smaller than the height of the protruding portion 22a, that is, because the protruding portion 22a is provided with a compression allowance, the protruding portion 22a can be strongly compressed. The adhesion pressure of the protrusion 22a to the inner surface can be increased, and the container body can be made difficult to come out liquid-tight. Furthermore, since it has the latching protrusion 41e provided in the sealing member 41 latched with respect to the latching hole 22b of the collar part 22, and the latching protrusion 42b provided in the cover body 42, the latching protrusion 41e in the latching hole 22b. And the locking projection 42b are locked, and the locking projection 41e and the locking projection 42b face each other through the locking hole 22b. And can be firmly assembled by physical fitting between the three parties, so that the flange portion 22 can be made difficult to come out between the sealing member 41 and the lid body 42. Note that the tips of the locking protrusions 41e and 42b can be fixed by ultrasonic fusion.

Second Embodiment [FIGS. 7 to 9]:
A viscous fluid-filled damper 43 according to the second embodiment is shown in FIG. 7, and components of the viscous fluid-filled damper 43 are shown in FIGS. The viscous fluid-filled damper 43 of the second embodiment is different from the viscous fluid-filled damper 14 of the first embodiment in the configuration of the sealed container 44. The remaining configuration and manufacturing method are the same as in the first embodiment.

The sealed container 44 includes a container body 45, a sealing member 46, and a lid body 47.
Similar to the container body 16, the container body 45 is made of a rubber-like elastic body, more specifically, butyl rubber, and has a bowl-like shape that is hollow and has one end opened. A peripheral wall portion 19, a flexible portion 20, and a central attachment portion 21 are formed from the opening end 45a side. Unlike the container main body 16, a flange 48 is provided at the lower end of the peripheral wall 19 in place of the flange 22.
The flange portion 48 has a plurality (eight in the drawing) of locking holes 48a that penetrate the wall thickness and are arranged in a plan view, and bulges in the thickness direction on the outer edge side of the locking holes 48a. The circumferential protrusion 48b
And are formed. The protrusion 48b bulges upward from the upper surface of the flange 48, and the tip is formed in a semicircular shape in cross section. A rib portion 48c is provided on the lower surface of the flange portion 48 on the same circumference as the protruding portion 48b, and the rib portion 48c is formed in the same semicircular shape as the tip of the protruding portion 48b. That is, in the flange portion 22 of the first embodiment, the locking hole 22b is provided on the outer edge side of the flange portion 22 from the projection portion 22a, but in the flange portion 48, the protrusion portion 48b is provided on the outer edge side of the flange portion 48 from the locking hole 48a. (FIG. 9).

  Similar to the sealing member 17, the sealing member 46 is formed in a ring shape from a thermoplastic hard resin, more specifically, a polypropylene resin, and is a separate component from the container body 16 described above. On the inner edge of the upper end of the sealing member 46, an engaging wall portion 46 a that protrudes to the side of the outer peripheral surface of the peripheral wall portion 19 of the container body 45 is formed in an endless annular shape, and is engaged with the engaging groove portion 19 b of the peripheral wall portion 19. Match. Such an engaging wall portion 46a and the engaging groove portion 19b are merely in contact with each other and are not fixed by an adhesive or the like. Further, a recessed step surface portion 46 b that sandwiches the flange portion 48 is provided on the inner edge side of the lower end of the sealing member 46, and the step size is formed to be equal to the thickness of the flange portion 48. The lower end of the sealing member 46 excluding the stepped surface portion 46b constitutes a fixing surface portion 46d that is fixed to a lid body 47 described later. The difference from the sealing member 17 is that an engagement groove 46c that engages with the protrusion 48b of the flange 48 is provided on the outer edge side of the step surface portion 46b. The depth dimension of the engaging groove 46c is smaller than the height dimension of the protrusion 48b.

  Similarly to the lid 18, the lid 47 is formed in a disk shape with a thermoplastic hard resin, more specifically, a polypropylene resin. A portion of the lid body 47 facing the fixing surface portion 46d of the sealing member 46 constitutes a fixing surface portion 47a. The fixing surface portions 46d and 47a are fixed together by ultrasonic fusion, and the container body 45 is fixed. The opening end 45a is closed. A mounting piece 47c protruding in the shape of a tongue piece is formed outward, and a mounting hole 47d through which the mounting screw N is inserted is formed in the mounting piece 47c. When the mounting screw N is inserted into the mounting hole 47 d and then screwed into the screw hole of the housing 7, the head of the mounting screw N engages with the lid body 47, and the lid body 47 of the sealed container 44 becomes the housing 7. Fixed to. What is different from the lid 18 is the position of the locking projection 47b. In order to be engaged with each locking hole 48 a of the flange 48, it is provided on the opening end side of the container body 45 from the locking projection 18 b of the lid 18. In addition, the height dimension of this latching protrusion 18b is formed equivalent to the thickness dimension of the collar part 48.

In the viscous fluid-filled damper 43 of the second embodiment, the opening end 45a of the container body 45 made of butyl rubber is sealed with a lid body 47 made of polypropylene resin, like the viscous fluid-filled damper 14 of the first embodiment. In addition, the degree of freedom in selecting the material of the sealed container 44 can be increased. Therefore, the hermetic container 44 corresponding to the performance required for the viscous fluid-filled damper 43 can be realized.
Further, the concave and convex engagement between the engaging groove 46 c of the sealing member 46 and the protrusion 48 b of the flange 48 allows the flange 48 to be accurately positioned with respect to the sealing member 46. In addition, this uneven engagement increases the contact area of the sealing member 46 with the flange portion 48, making it difficult for liquid leakage. Since the depth of the engaging groove 46c is smaller than the height of the protruding portion 48b, that is, because the protruding portion 48b is provided with a compression allowance, the protruding portion 48b can be strongly compressed. The adhesion pressure of the protrusion 48b to the inner surface can be increased. Therefore, the liquid tightness of the sealed container 44 can be further improved, and the container main body 45 can be made difficult to be removed from the sandwiching between the sealing member 46 and the lid body 47. Furthermore, since a rib part 48c is provided on the lower surface of the flange part 48 on the same circumference as the protrusion part 48b and this rib part 48c is compressed by the flat surface of the lid 47, the protrusion part 48b is also strongly compressed from the lower surface side. This increases the liquid tightness and the difficulty of removing the container body 45.

  Since the locking projection 47b of the lid body 47 is locked to the locking hole 48a of the flange portion 48, the positioning of the lid body 47 with respect to the flange portion 48 can be performed accurately, and the container main body 45 can be hardly pulled out. it can.

  Moreover, since the opening end 45a of the container main body 45 can be sealed with the lid 47 without using an adhesive, the production time can be shortened and the cost can be reduced.

  The sealing member 46 and the lid 47 are formed of a hard resin material that can be ultrasonically fused, and the fixing surface portions 46d and 47a that are fixed to the sealing member 46 and the lid 47 by ultrasonic fusion are provided. The sealing member 46 and the lid body 47 can be firmly fixed. In addition, since ultrasonic fusion can be performed in a short time, the production efficiency can be increased. Note that the tip of the locking protrusion 47b can be fixed to the sealing member 46 by ultrasonic fusion.

Further, in the viscous fluid-filled damper 43, since the protrusion 48b of the flange 48 is provided on the outer edge side of the locking hole 48a, the sealing member 46 and the lid body 47 are provided by the locking hole 48a provided on the inner edge of the flange 48. When the container main body 45 is deformed, it is possible to make the flange portion 48 difficult to shift inward, and to prevent the flange portion 48 from coming off between the sealing member 46 and the lid body 47. be able to.
In addition, the characteristic structure in each modification of 1st Embodiment is applicable also to 2nd Embodiment.

Third Embodiment [FIGS. 10 to 12]:
A viscous fluid-filled damper 49 according to the third embodiment is shown in FIG. 10, and constituent members of the viscous fluid-filled damper 49 are shown in FIGS. The viscous fluid-filled damper 49 of the third embodiment is different from the viscous fluid-filled damper 14 of the first embodiment in the configuration of the sealed container 50. The remaining configuration and manufacturing method are the same as in the first embodiment.

The sealed container 50 includes a container body 16, a sealing member 17, and a lid body 51.
The lid 51 is formed in a disc shape with a thermoplastic hard resin, more specifically, a polypropylene resin, like the lid 18. A portion of the lid 51 facing the fixing surface portion 17d of the sealing member 17 constitutes a fixing surface portion 51a. The fixing surface portions 17d and 51a are fixed together by ultrasonic fusion, and the container body 16 is fixed. The opening end 16a is closed. Furthermore, a locking projection 51b that locks with each locking hole 22b of the flange portion 22 is provided, and the height dimension of the locking projection 51b is formed to be equal to the thickness of the flange portion 22. The lid 51 is formed with a mounting piece 51c that protrudes outward in the shape of a tongue, and the mounting piece 51c has a mounting hole 51d through which a mounting screw N is inserted. When the mounting screw N is inserted into the mounting hole 51 d and then screwed into the screw hole of the housing 7, the head of the mounting screw N is engaged with the lid body 51, and the lid body 51 of the sealed container 50 is attached to the housing 7. Fixed to. The difference from the lid 18 is that a protruding wall portion 51e is provided which protrudes to the side of the inner peripheral surface on the opening end 16a side of the container body 16 and separates (distance t) from the inner peripheral surface. The protruding wall portion 51e is formed in an annular shape, and the protruding wall portion 51e is provided with four deaeration gap portions 51f.

Similarly to the viscous fluid-filled damper 14 of the first embodiment, the viscous fluid-filled damper 49 of the third embodiment can seal the open end 16a of the container body 16 made of butyl rubber with a lid 51 made of polypropylene resin. The degree of freedom in selecting the material of the sealed container 50 can be increased. Therefore, the hermetic container 50 corresponding to the performance required for the viscous fluid-filled damper 49 can be realized.
Further, the concave / convex engagement between the engagement groove 17c of the sealing member 17 and the protrusion 22a of the flange portion 22 enables the positioning of the flange portion 22 with respect to the sealing member 17 and makes it difficult for liquid to leak. This makes it difficult for the container body 16 to come off.

  Moreover, since the opening end 16a of the container body 16 can be sealed with the lid 51 without using an adhesive, the production time can be shortened and the cost can be reduced.

  Since the locking projection 51b of the lid 51 is locked with the locking hole 22b of the flange 22, the positioning of the lid 51 with respect to the flange 22 can be performed accurately. Further, since the sealing member 17 and the lid 51 face each other through the locking hole 22b, the container main body 16 is sealed with the wedge leading from the lid 51 to the sealing member 17 being driven into the container main body 16. It is difficult for the member 17 and the lid 51 to be separated from the sandwiched state.

  Since the locking hole 22b of the flange portion 22 is provided on the outer edge side of the protrusion portion 22a, the protrusion portion 22a provided on the inner edge side of the flange portion 22 can be compressed and clamped, and the viscous fluid 10 is removed along the flange portion 22 It can be made difficult to bleed. Therefore, the liquid tightness of the sealed container 50 can be enhanced.

  The sealing member 46 and the lid 47 are formed of a hard resin material that can be ultrasonically fused, and the fixing surface portions 46d and 47a that are fixed to the sealing member 46 and the lid 47 by ultrasonic fusion are provided. The sealing member 46 and the lid body 47 can be firmly fixed. In addition, since ultrasonic fusion can be performed in a short time, the production efficiency can be increased. The tip of the locking projection 51b can be fixed to the sealing member 17 by ultrasonic fusion.

  Furthermore, in the viscous fluid-filled damper 49, the lid 51 is provided with a protruding wall portion 51e that is separated from the inner peripheral surface of the container main body 16, so that the inner wall of the container body 16 is deformed by the protruding wall portion 51e. Therefore, it is possible to make it difficult to deform the opening end 16a side of the container body 16 inward. Therefore, the collar part 22 provided in the opening end 16a can be reliably compressed and clamped. Further, when the container main body 16, the sealing member 17, and the lid 51 are assembled, the protruding wall portion 51 e is separated from the inner peripheral surface of the container main body 16, so that the inner peripheral surface of the container main body 16 and the lid 51 are The protruding wall portion 51e can be hardly rubbed, and the flange portion 22 can be accurately sandwiched between the sealing member 17 and the lid body 51.

Since the degassing gap 51f is provided in the protruding wall 51e, the lid 51 can be covered over the opening end 16a while releasing air in the space surrounded by the annular protruding wall 51e from the gap 51f. In addition, it is possible to make it difficult to enclose air when the cover body 51 having the protruding wall portion 51e is covered with the opening end 16a and sealed.
In addition, the characteristic structure in each modification of 1st Embodiment is applicable also to 3rd Embodiment.

In the modified viscous fluid-filled dampers 14, 43, 49 common to the respective embodiments , the locking holes 22c, 48a are formed in the flange portions 22, 48, and the locking protrusions 18b, 47b, Although an example in which 51b is provided is shown, a viscous fluid-filled damper that does not have these locking holes and locking projections may be used.

Sectional drawing which shows the viscous fluid enclosure damper of 1st Embodiment. Sectional drawing which shows the structural member of the viscous fluid enclosure damper in 1st Embodiment. It is explanatory drawing which shows the structural member of the viscous fluid enclosure damper in 1st Embodiment, A divided figure (A) is a top view of a container main body, and a divided figure (B) is a top view of a cover body. The partial expansion explanatory drawing of the viscous fluid enclosure damper in this invention. The partial expansion explanatory drawing of the viscous fluid enclosure damper in this invention. The partial expansion explanatory drawing of the viscous fluid enclosure damper in this invention. Sectional drawing which shows the viscous fluid enclosure damper of 2nd Embodiment. Sectional drawing which shows the structural member of the viscous fluid enclosure damper in 2nd Embodiment. It is explanatory drawing which shows the structural member of the viscous fluid enclosure damper in 2nd Embodiment, A part view (A) is a top view of a container main body, and a part view (B) is a top view of a cover body. Sectional drawing which shows the viscous fluid enclosure damper of 3rd Embodiment. Sectional drawing which shows the structural member of the viscous fluid enclosure damper in 3rd Embodiment. The top view which shows the structural member of the viscous fluid enclosure damper in 3rd Embodiment. An explanatory view of a disk device to which a viscous fluid-filled damper of a conventional example is attached. Explanatory drawing of the viscous fluid enclosure damper of one prior art example.

Explanation of symbols

1 Damper filled with viscous fluid (One conventional example)
DESCRIPTION OF SYMBOLS 2 Airtight container 3 Flexible part 4 Mechanical chassis 5 Mounting shaft 6 Lid part 7 Case 7a Through-hole 8 Hanging spring 9 Disk apparatus (one conventional example)
DESCRIPTION OF SYMBOLS 10 Viscous fluid 11 Peripheral wall part 12 Stirring cylinder part 13 Storage recessed part 14 Viscous fluid enclosure damper (1st Embodiment)
DESCRIPTION OF SYMBOLS 15 Airtight container 16 Container main body 16a Open end 17 Sealing member 17a Engagement wall part 17b Step surface part 17c Engagement groove 17d Adhering surface part 18 Lid 18a Adhering surface part 18b Locking protrusion 18c Attachment piece 18d Attachment hole 19 Peripheral wall part 19a Protrusion 19b Engaging groove portion 20 Flexible portion 21 Central mounting portion 21a Housing recess portion 22 Gutter portion 22a Protruding portion 22b Locking hole 22c Rib portion 23 Viscous fluid-filled damper (first modification of the first embodiment)
24 flange part 24a protrusion part 24b locking hole 25 lid body 25a fixing surface part 25b locking protrusion 25c mounting piece 25d mounting hole 25e engagement groove 26 viscous fluid-filled damper (second modification of the first embodiment)
27 flange part 27a rib part 27b projection part 27c locking hole 28 sealing member 28a engagement wall part 28b step surface part 28c fixing surface part 29 viscous fluid-filled damper (third modification of the first embodiment)
30 flange part 30a rib part 30b protrusion part 30c locking hole 31 lid body 31a fixing surface part 31b locking protrusion 31c attachment piece 31d attachment hole 31e engagement groove 32 viscous fluid sealing damper (fourth modification of the first embodiment)
33 sealing member 33a engaging wall portion 33b stepped surface portion 33c engaging groove 33d fixing surface portion 33e pressing projection 34 lid 34a fixing surface portion 34b locking projection 34c mounting piece 34d mounting hole 34e engaging groove 34f pressing projection 35 viscous fluid sealing damper 35 (Fifth Modification of First Embodiment)
36 collar part 36a protrusion part 36b locking hole 36c rib part 37 viscous fluid enclosure damper (6th modification of 1st Embodiment)
38 Sealing member 38a Engagement wall portion 38b Stepped surface portion 38c Engagement groove 38d Fixing surface portion 38e Locking projection 39 Lid 39a Fixing surface portion 39b Mounting piece 39c Mounting hole 40 Viscous fluid sealing damper (seventh modification of the first embodiment) )
41 sealing member 41a engaging wall portion 41b stepped surface portion 41c engaging groove 41d fixing surface portion 41e locking projection 42 lid 42a fixing surface portion 42b locking projection 42c mounting piece 42d mounting hole 43 viscous fluid sealing damper (second embodiment)
44 Sealed container 45 Container body 45a Open end 46 Sealing member 46a Engagement wall part 46b Stepped surface part 46c Engagement groove 46d Fixing surface part 47 Lid 47a Fixing surface part 47b Locking protrusion 47c Mounting piece 47d Mounting hole 48 Ling part 48a Locking Hole 48b Protrusion 48c Rib 49 Viscous fluid-filled damper (third embodiment)
50 Sealing Container 51 Lid 51a Adhering Surface 51b Locking Projection 51c Mounting Piece 51d Mounting Hole 51e Projecting Wall 51f Clearance N Mounting Screw

Claims (7)

A sealed container composed of a container body and a lid that closes the open end of the container body, and a viscous fluid sealed in the sealed container, and the sealed container is fixed to the support body and the supported body. In the viscous fluid-filled damper that attenuates the vibration of the supported body by the viscous resistance of the viscous fluid,
Provided with a flange projecting outward at the open end of the container main body, and provided with an annular sealing member that sandwiches the collar between the lid and the outer periphery of the container main body,
The flange is provided with a protrusion that bulges in a circumferential shape, and an engagement groove into which the protrusion enters is provided at a portion of the sealing member or lid that contacts the protrusion. fixed by sealingly liquid-tight the open end of the container body is sandwiched between the flange portion in a compressed state with the protrusions,
A viscous fluid-filled damper , wherein a lid wall is provided with a projecting wall portion protruding to the side of an inner peripheral surface on the opening end side of the container body and spaced from the inner peripheral surface . A sealed container composed of a container body and a lid that closes the open end of the container body, and a viscous fluid sealed in the sealed container, and the sealed container is fixed to the support body and the supported body. In the viscous fluid-filled damper that attenuates the vibration of the supported body by the viscous resistance of the viscous fluid,
Provided with a flange projecting outward at the open end of the container main body, and provided with an annular sealing member that sandwiches the collar between the lid and the outer periphery of the container main body,
The flange is provided with a protruding portion that bulges in a circumferential shape, and an engaging groove into which the protruding portion enters is provided at a portion of the sealing member or lid that contacts the protruding portion. A pressing protrusion for further compressing the container , and a sealing member and the lid are fixed to each other so that the flange having the protrusion is sandwiched in a compressed state to seal the opening end of the container body in a liquid-tight manner. Viscous fluid filled damper. A sealed container composed of a container body and a lid that closes the open end of the container body, and a viscous fluid sealed in the sealed container, and the sealed container is fixed to the support body and the supported body. In the viscous fluid-filled damper that attenuates the vibration of the supported body by the viscous resistance of the viscous fluid,
Provided with a flange projecting outward at the open end of the container main body, and provided with an annular sealing member that sandwiches the collar between the lid and the outer periphery of the container main body,
The one surface of the flange portion provided with a projection portion which bulges circumferentially, a rib portion that bulges to the opposite side circumferentially with said protrusions on the other surface of the flange portion provided at the same peripheral on the protrusion portion the engaging groove the protrusion enters provided in the region in contact with the protrusion portion of the sealing member or the lid member, as contacting site flat surface to the rib portion of the sealing member or the lid member, the sealing member A viscous fluid-filled damper characterized in that the flange portion having the protrusion is sandwiched in a compressed state by adhering the lid and the lid, and the opening end of the container body is liquid-tightly sealed. A plurality of locking holes arranged circumferentially in the collar portion are formed, and locking protrusions that lock the locking holes are provided on at least one of the sealing member or the lid . viscous fluid-sealed damper according (1). The viscous fluid-filled damper according to claim 4, wherein the locking hole is provided on the outer edge side of the flange portion from the protruding portion. The viscous fluid-filled damper according to claim 4, wherein the protruding portion is provided on the outer edge side of the flange portion from the locking hole.   The sealing member and the lid are formed of a hard resin material that can be ultrasonically fused, and a fixing surface portion that is fixed to the sealing member and the lid by ultrasonic fusion is provided. The viscous fluid-filled damper according to claim 1.

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