JP2002286074A - Mounting structure of damper enclosing viscous liquid and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a film damper in which a flexible film is closed to make a container in which a viscous liquid is enclosed, which can be fitted and fixed to a companion member easily in a good workability. SOLUTION: A fixing member 24 having a neck 28 and a head 30 is fixedly provided in the condition that the neck 28 and the head 30 projects outside the container 20 of the film damper 16 and further, a fixing hole 34 axially passing the head 30 is formed and a part of the neck 28 and head 30 are axially inserted into the fixing hole 34. In this state, a separate locking member 36 having an engaging hole 42 is fitted orthogonal to the neck 28 with regard to the axis and the fixing member 24 is axially locked. In this way, the film damper 16 is fitted and fixed to the support frame 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a viscous fluid sealing damper in which a viscous fluid is sealed in a container formed by closing a flexible film in a bag shape, and a method of manufacturing the viscous fluid sealing damper. .

[0002]

2. Description of the Related Art When a disc player such as a CD player is mounted on a vehicle or the like, a conventional vibration sensor shown in FIG. As shown in (A), a viscous fluid-filled damper 206 is interposed between a main body mechanism unit 202 of a disc player supported via a spring 200 and a support member (support frame) 204. I have.

FIG. 13B shows a specific structure of a conventional viscous fluid-filled damper 206. As shown, the viscous fluid-filled damper 206 is composed of a container 208 and an inner portion thereof. And a highly viscous fluid 210 such as a silicone oil sealed in the fluid.

[0004] The container 208 has a bottom portion 212 (1.0 mm in thickness) and a cylindrical peripheral wall portion 214 (1.
0 mm) and a thin flexible portion 216 (thickness 0.3 mm)
And a stirring unit 218 that protrudes into the container 208, that is, into the viscous fluid 210 at the center of the flexible unit 216.

The stirring section 218 has an insertion hole 22 in the axial direction.
13A, a rigid shaft 222 made of metal or the like protruding from the main body mechanism unit 202 as a supported member is inserted into the shaft 222, as shown in FIG. The stirrer 218 is coupled to the supported member (or the supporting member) via the.

In the viscous fluid-filled damper 206, the agitating section 218 that has entered the viscous fluid 210 floats inside based on the relative displacement between the supporting member and the supported member, and the agitating action at that time, that is, the viscous fluid 210 Absorbs energy by viscous flow of, and interrupts or suppresses vibration transmission.

In the case of the viscous fluid-filled damper 206, the bottom portion 212, the peripheral wall portion 214, and the like are formed by the action of stirring the viscous fluid 210 due to the displacement of the stirring section 218, that is, because the vibration is absorbed based on the viscous flow. It is necessary to suppress deformation as much as possible.

Accordingly, for example, a viscous fluid-filled damper 2 shown in FIG.
In the case of 06, the bottom 212 is made of a hard resin (for example, polypropylene resin), the outer wall 214A is made of a hard resin such as polypropylene resin, and the inner wall 214B is made of a flexible resin 216. It is made of an elastomer such as rubber or soft resin and is made thick.

However, the viscous fluid-filled damper 206 having such a structure is provided at the center of the flexible portion 216 with the stirring portion 21.
8 is provided, and the stirring section 218 is further provided with an insertion hole 220.
In addition to this, the overall shape is complicated and the manufacturing cost is increased.

In addition, the viscous fluid-filled damper 206
In order to obtain high attenuation, it is necessary to increase the depth of the container 208 including the bottom portion 212, the peripheral wall portion 214, and the like. Therefore, the height of the container 208, that is, the viscous fluid-filled damper 20 is inevitably increased.
6 (h in FIG. 13A) becomes high,
In order to ensure the free movement of the stirrer 218, the shaft 222
Must be exposed to the outside over a certain dimension (1 in FIG. 13A), and as a result, there is a problem that the dimension of the mounting space H of the viscous fluid-filled damper 206 becomes large.

In recent years, the size and thickness of disc players, AV equipment, and the like for vehicles have been reduced, and a viscous fluid-filled damper 206 that supports vibration-proofing has been accompanying this.
In addition, the demand for miniaturization and thinning is increasing, but it is actually difficult for the conventional viscous fluid-filled damper 206 to cope with this.

Further, the conventional viscous fluid-filled damper 206 as shown in FIG. 13 has a particularly high damping effect when the agitating section 218 is displaced in the left-right direction (or the direction perpendicular to the plane of the paper) in the figure, and in the vertical direction in the figure. There is a problem that the damping characteristic has a directionality, such as a relatively low damping effect when displaced, and a problem that the shaft 222 is required for mounting.

In addition, a conventional viscous fluid-filled damper 20
In the case of 6, in order to form a damping action by the stirring action of the viscous fluid 210 based on the displacement of the stirring section 218 inside the fixed vessel 208 surrounded by the rigid bottom section 212 and the peripheral wall section 214,
It is difficult to sufficiently bring out the damping function of the viscous fluid 210, and there has been a problem that the viscous fluid-filled damper 206 has to be increased in size in order to have necessary damping characteristics.

In view of the above, the present inventor has proposed a substantially amorphous viscous fluid-filled damper in which a flexible film is closed in the shape of a bag to form a container and a viscous fluid is enclosed therein. (Film damper) was devised.

According to this film damper, it is possible to solve the above-mentioned various problems of the conventional viscous fluid-filled damper 206 shown in FIG. That is, in the case of this film damper, the flexible film is not made to viscously flow based on the stirring action of the stirring section 218 as in the related art, but the flexible film is formed into a bag-like shape based on the relative displacement between the supporting member and the supported member. Since the vibration is damped by deforming the entire container which is closed to the inside and forcibly flowing the viscous fluid inside by the deformation of the container, the stirring unit 218 is provided as in the related art. There is no need to lengthen the agitator 218 or make the inside of the container 208 deeper, and the shape is simple and compact, and the size of the mounting space H of the viscous fluid-filled damper (film damper) can be small, and the mounting can be performed. Also, a rigid shaft body 222 is not required.

As a result, the size and thickness of the damper can be significantly reduced. That is, by using such a film damper, the stirrer 218 or the shaft 222, which has been an obstacle to miniaturization and thinning, can be dispensed with, and thereby miniaturization of devices such as an in-vehicle disk player and AV equipment. In addition, it is possible to sufficiently cope with a reduction in thickness.

Further, since the damper can be made thinner and more compact, there is an advantage that the use of the viscous fluid-filled damper is greatly expanded. Specifically, for example, in a HDD (hard disk drive) of a personal computer (personal computer), a thin rubber sheet is conventionally simply used to prevent vibration, or a digital video using a disk is conventionally used. Cameras and the like merely support vibration isolation by using a lump of rubber, but since this film damper has an extremely compact overall shape and can be made extremely thin, it should also be used as a damper for these devices. Becomes possible. Alternatively, the present invention can be applied as a damper for various small precision devices which cannot be handled by the conventional viscous fluid-filled damper.

Further, since the container of the film damper can be deformed substantially uniformly in the three-dimensional direction, there is no directionality in the damping characteristic. In addition, since the container itself has substantially no rigidity, the internal viscous fluid Various functions such as high vibration damping efficiency can be obtained.

[0019]

However, this type of damper (film damper) is of an irregular shape as a whole, and there is a problem that when a force is applied, the damper is deformed in the direction of the force. Means for attaching and fixing the film damper to a mating member (supporting member or supported member) is a major problem. In other words, if a force is applied in the direction in which the film damper is pressed against the mounting surface of the mating member, the film damper is crushed by the applied force and the applied force is absorbed there and fixed. The force for fixing is not transmitted to the part. The present invention has been made to solve such a problem.

In the case of the conventional viscous fluid-filled damper 206 shown in FIG. 13, a support frame (support member) 204
The fixing is performed by fastening a fixing piece 224 extended to the bottom portion 212 with a fixing screw 226 while the shaft 222 is fixed to the main body mechanism unit (supported member) 202. This also serves as a member, which requires a lot of man-hours for mounting the shaft body 222 and requires a space for it, which hinders an increase in the cost of the viscous fluid-filled damper 206 and a reduction in the thickness of the disk player. The present invention also aims to solve such a problem.

[0021]

SUMMARY OF THE INVENTION The mounting structure of the viscous fluid-filled damper and the method of manufacturing the viscous fluid-filled damper of the present invention have been devised to solve such problems.
The first aspect of the present invention relates to a mounting structure of a viscous fluid-enclosed damper, wherein a viscous fluid is sealed in a container formed by closing a flexible film in a bag shape, and a supporting member and a supported member are provided. For deforming the container by following the relative displacement thereof, and for attaching and fixing a viscous fluid-filled damper that performs a vibration damping effect by causing the viscous fluid inside to viscously flow to a counterpart member. An attachment structure, wherein a fixing member having a thin neck portion and a head portion having a larger dimension in a direction perpendicular to the axis than the neck portion is fixed to the container with the neck portion and the head projecting outside the container. On the other hand, a fixing hole for passing the head in the axial direction is provided on the side of the counterpart member, and at least a part of the neck and the head are axially inserted into the fixing hole, In that state, the fixing hole on the side opposite to the insertion side In the above, the retaining member having a fitting hole in which a part in the circumferential direction is notched with respect to the neck portion, and which is separate from the damper and the mating member, is fitted in the direction perpendicular to the axis to release the fixing member. The damper is fixed to the mating member.

According to a second aspect of the present invention, a viscous fluid is sealed inside a container formed by closing a flexible film in a bag shape, and the viscous fluid is inserted between the supporting member and the supported member to form a bag. Deformation of the container following the relative displacement, and a mounting structure for mounting and fixing a viscous fluid-filled damper that performs a vibration damping action by viscously flowing an internal viscous fluid to a mating member. A fixing member having a thin neck portion and a head portion having a larger dimension in the direction perpendicular to the axis than the neck portion is fixedly mounted in a state where the neck portion and the head protrude outside the container, while the side of the counterpart member is fixed. A fixing hole having an insertion hole through which the head passes in the axial direction, and an engagement hole smaller in size than the head and larger than the neck, is provided with the head in the insertion hole. After passing in the axial direction, the neck is moved in the direction perpendicular to the axis to The head is engaged in the engaging hole in the axial direction and the head is axially engaged with the engaging hole to prevent the fixing member from coming off in the axial direction, thereby fixing the damper to the counterpart member. It is characterized by the following.

According to a third aspect of the present invention, a viscous fluid is sealed in a container formed by closing a flexible film in a bag shape, and is inserted between a supporting member and a supported member. Deformation of the container following the relative displacement, and a mounting structure for mounting and fixing a viscous fluid-filled damper that performs a vibration damping action by viscously flowing an internal viscous fluid to a mating member. A fixing member having a thin neck and a head having a larger dimension in the direction perpendicular to the axis than the neck,
While the neck and the head are fixed in a state of protruding outside the container, a fixing hole for passing the head in the axial direction is provided on the side of the counterpart member, and the head is moved in the axial direction with respect to the fixing hole. And the head is provided with a projection in the direction perpendicular to the axis at a predetermined location in the circumferential direction, while the fixing hole is provided with a corresponding notch at a predetermined location in the circumferential direction, and By passing the protrusion in the axial direction and rotating the fixing member in that state, the protrusion is axially engaged with the peripheral portion of the fixing hole to prevent the fixing member from being removed in the axial direction. Thus, the damper is attached and fixed to a mating member.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the fixing member is made of a hard resin and is welded and integrated with the flexible film. Features.

A fifth aspect of the present invention relates to a method of manufacturing a viscous fluid-enclosed damper, wherein a viscous fluid is enclosed in a container formed by closing a flexible film in a bag shape, and the container has a small thickness. A method for manufacturing a viscous fluid-filled damper, comprising: a fixing member having a neck and a head having a dimension larger in a direction perpendicular to the axis than the neck is fixedly mounted so that the neck and the head protrude out of the container. The flexible film is made of a resin film, and the flexible film is set in a molding die of the fixing member before the flexible film is closed in a bag shape. The molding of the fixing member and the welding to the flexible film are simultaneously performed by injecting into the cavity of the molding die, and then the flexible film to which the fixing member is welded is closed in a bag shape, and the viscous fluid is filled therein. To enclose And butterflies.

[0026]

According to the first aspect of the present invention, a fixing member having a thin neck portion and a larger head portion is fixedly mounted on the viscous fluid-filled damper (hereinafter, film damper) on the container side. On the other hand, a fixing hole is provided on the side of the mating member, at least a part of the head and the neck is inserted in the axial direction, and in this state, the retaining member is fitted in the direction perpendicular to the axis to prevent the fixing member from coming off, and the film The damper is mounted and fixed to a mating member.

In this mounting structure, no special resistance force acts on the damper when the fixing member is inserted into the fixing hole, so that the damper is not crushed. At this time, no special force acts on the damper, specifically on the viscous fluid in the container and the inside thereof. Therefore, according to this mounting structure, the film damper can be mounted and fixed to the mating member with good workability.

In addition, since this mounting structure does not require a shaft that also serves as a fixing member for stirring and flowing a viscous fluid, no man-hours and space for providing the shaft are required, and the cost and mounting cost of the damper are reduced. Cost can be reduced. Furthermore, since a shaft that also serves as a fixing member is not used, it is not necessary to secure a space for the shaft, and a small mounting space is required in combination with the thin film damper. I'm done.

In the second aspect, a fixing hole having an insertion hole and an engagement hole is provided on the mating member side, and the neck and the head provided on the damper side are inserted in the insertion hole in the axial direction. After letting
The head is moved in the direction perpendicular to the axis to engage the neck with the engagement hole, and the head is axially engaged with the engagement hole, so that the fixing member is prevented from coming off and the damper is attached and fixed to the mating member. In this case, even in this case, when the fixing member is fixed to the mating member, a force in a direction of pressing the damper against the mounting surface against the viscous fluid inside the container and the viscous fluid is not particularly applied. Therefore, the damper can be easily mounted and fixed to the mating member with good workability even in the mounting structure according to the second aspect.

According to a third aspect of the present invention, a projection in the direction perpendicular to the axis is provided on the head of the fixing member of the damper, while a corresponding notch is provided in the fixing hole on the side of the mating member, and the projection is formed. After the head is inserted into the fixing hole by passing the notch portion in the axial direction, the protruding portion is axially engaged with the peripheral portion of the fixing hole by rotating the head, whereby the fixing member is pivoted. In this mounting structure, the force for squeezing the damper does not act on the damper at the time of fixing the fixing member. Also in the structure, the damper can be attached and fixed to the mating member with good workability.

Here, the fixing member is made of a hard resin and can be integrated with the flexible film by welding. In this manner, such a fixing member can be easily fixed to the container of the film damper.

According to a fifth aspect of the present invention, in manufacturing the film damper, the flexible film is formed of a resin film, and is set in a mold of a fixing member at a stage before the flexible film is closed in a bag shape.
In this state, the resin material is injected into the cavity of the molding die to simultaneously perform the molding of the fixing member and the welding to the flexible film, and thereafter, the flexible film is closed in a bag shape, and the viscous fluid is filled therein. According to this manufacturing method, the film damper can be manufactured without waste and continuously with a small number of steps. Further, according to this manufacturing method, even when a hole is formed in the flexible film, the hole can be sealed at the same time when the fixing member is formed and integrated with the flexible film by welding, so that the viscous fluid does not leak. Are also obtained.

[0033]

An embodiment in which the present invention is applied to an anti-vibration support of an on-vehicle disk player will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a main body mechanism unit (supported member) of the disc player, and 12 denotes a support frame (support member). The main body mechanism unit 10 is elastically supported by a support frame 12 via a spring 14.

A viscous fluid-filled damper (hereinafter referred to as a film damper) 16 according to the present embodiment is interposed between the main body mechanism unit 10 and the support frame 12, and the main body mechanism unit 10 and the support frame 12 are provided. Are connected via a film damper 16. In this example, a film damper 16 is interposed between the side surface of the main body mechanism unit 10 and the support frame 12.

FIG. 2 specifically shows the structure of the film damper 16. As shown in the figure, the film damper 16 of the present embodiment has a form in which a flexible film 18 is closed in a bag shape to form a container 20 and a viscous fluid 22 is sealed therein. A rigid (here, hard resin) fixing member 24 is fixed to the surface. In this example, the flexible films 18 are joined to each other by heat sealing to form a bag-shaped container 20. The pair of fixing members 24 are fixed to the flexible film 18 by heat welding.

FIG. 2 shows the film damper 16 in a state before the film damper 16 is assembled to a vehicle-mounted disk player. In this state, the film damper 16 of this embodiment has the following shape, that is, FIG. ), The length L ₀ of one side is 1
It has a square shape of 5 mm, and the inside of the container 20 has a similar square shape. The fixing member 24
Has a thin plate-shaped fixing portion 26 to the flexible film 18, a narrow neck portion 28, and a head portion 30 having a larger diameter than the thin portion, and in this example, as shown in FIG. As shown, the dimension φA of the fixing portion 26 is 7.5 mm,
Is 3 mm. The fixing portion 26, the neck portion 28, and the head portion 30 are all circular in cross section.

The thickness of the flexible film 18 (t _{0 in} FIG. 2A) is very thin, 30 μm.
That is, the film damper 16 of this embodiment is extremely small and has a very small thickness.

The film damper 16 of this embodiment includes a viscous fluid 2 inside a container 20 in which a flexible film 18 is closed in a bag shape.
2 with the thickness of 2 mm is pulled up and down in FIG. 2 to deform the shape, and the thickness is reduced to about 4.5 mm.
As shown in FIG. 1 (H in FIG. 1B), it is inserted between the main body mechanism unit 10 and the support frame 12. Specifically, one of the pair of fixing members 24 is fixed to the main body mechanism unit 10 and the other is fixed to the support frame 12 so that the main body mechanism unit 10 and the support frame 12 are fixed.
Are connected via a film damper 16.

As shown in the enlarged views of FIGS. 1B and 2A, in this example, the flexible film 18
PP resin film 18A, L-LDPE resin film 1
8B, a three-layer laminated structure of the CPP resin film 18A. These CPP resin films 18A and L-LD
It is integrally formed with the PE resin film 18B by co-extrusion.

The CPP resin film 18A is an unstretched polypropylene resin film, and the L-LDPE resin film 18B is a linear low-density polyethylene resin film, which has less polymer molecules than the high-pressure method low-density polyethylene resin film. It is an unstretched resin film. The thickness of each of the resin films 18A, 18B and 18A is 1: 2: 1 (t ₁ : t ₂ : t _{1 in} FIG. 2A), and the thickness t of the flexible film 18 as a whole is ₀ is 30 μm as described above.

FIG. 5 shows the mounting structure of the film damper 16 of this embodiment and the mounting and fixing procedure in detail. In the figure, reference numeral 34 denotes a circular fixing hole formed in the support frame 12. The fixing hole 34 has a larger diameter than the head 30 of the fixing member 24, and the head 30 can pass through the head 30 in the axial direction.

Reference numeral 36 denotes a fixing member 2 inserted into the fixing hole 34.
4 is a retaining member for retaining the member 4 in the axial direction, and has a fitting portion 38 and a body portion 40 having a substantially C-ring shape. The fitting portion 38 is provided with a fitting hole 42 and a cutout portion 44 serving as a fitting opening. On the other hand, the torso 4 is
6 are provided.

In the case of this mounting structure, the fixing member 24 is inserted through the fixing hole 34 of the support frame 12 in the axial direction to expose the fixing member 24 to the outside. Can be prevented from coming off in the axial direction by fitting in the direction perpendicular to the axis. That is, the film damper 16 can be attached and fixed to the support frame 12 by the fixing member 24.

Similarly, the fixing member 24 on the opposite surface is provided.
The film damper 16 can be interposed between the main body mechanism unit 10 and the support frame 12 by fixing the film damper 16 to the main body mechanism unit 10. That is, the main body mechanism unit 10 and the support frame 12 are connected to the film damper 1.
6 can be connected.

The fixing member 24 can be fixed to the film damper 16 by the method shown in FIGS. In this example, in a state where the two flexible films 18 are put together, the peripheral parts of the square are closed by heat sealing to form a bag.
The fixing member 24 is attached before the two flexible films 18 are combined into a bag.

In FIG. 6, reference numeral 48 denotes a roll around which one flexible film 18 is wound, and 50 denotes a resin fixing member 24.
Is an injection machine for injecting a resin material that is a component of the fixing member 24, and 54 is a take-up roll. The molding die 50 has a cavity 56 for molding the fixing member 24 therein as shown in the enlarged view of FIG.

Here, the flexible film 1 is rolled from the roll 48.
8 is fed out, and this is inserted between the split molds 50A and 50B of the molding die 50. In this state, the feeding of the flexible film 18 is temporarily stopped, and in this state, the resin material is injected from the injection machine 52 into the cavity 56 of the molding die 50.

At this time, the injected resin material in the molten state melts a part of the flexible film 18 and penetrates the same, and fills the inside of the cavity 56, whereby the fixing portion 26, the neck portion 28 and the head At the same time that the fixing member 24 having the portion 30 is formed, the fixing portion 26 is thermally welded to the flexible film 18. That is, molding of the fixing member 24 and integration with the flexible film 18 are performed simultaneously.

As shown in FIG. 7, the above operation is intermittently performed one after another in response to the feeding of the flexible film 18, and the fixing member 24 is fixed to the continuous flexible film 18.
Are provided one after another at predetermined intervals as shown in FIG. On the other hand, the fixing member 24 taken out of the molding die 50
The attached flexible film 18 is taken up by the take-up roll 54.

Thereafter, the fixing member 2 obtained as described above is used.
The flexible film 18 provided with the four-pieces 4 is heat-sealed at a predetermined position with two sheets being put together, and at the same time, a viscous fluid is sealed in the inside of the flexible film 18 at the same time. Can be continuously obtained.

In the case of the film damper 16 of the present embodiment, the film damper 16 is substantially indefinite and can be deformed evenly in the three-dimensional direction. Film damper 16 in the displacement direction
The whole transforms itself. Strictly speaking, the internal viscous fluid 2
The container 20 made of the flexible film 18 is deformed following the direction of relative displacement between the main body mechanism unit 10 and the support frame 12 while forcibly flowing the viscous fluid 2. Vibration is attenuated by the energy absorption by.

FIG. 3 and FIG. 4 schematically show the operation of the film damper 16. First, FIG. 3 shows an operation of the film damper 16 when the main body mechanism unit 10 and the support frame 12 are relatively displaced in a direction away from each other (horizontal direction in the drawing).

As shown in FIG. 3 (I), when the main body mechanism unit 10 and the support frame 12 are displaced relative to the film damper 16 in a direction to open the film damper 16 right and left.
As shown by the arrows, the viscous fluid 22 inside the container 20 flows so as to gather at the upper and lower central portions in the figure, and the film damper 16 is deformed in a direction in which the film damper 16 opens right and left with the flow. FIG. 3 (II) shows the state when the film damper 16 is most opened in the horizontal direction in the drawing.

Next, in this state, when the main body mechanism unit 10 and the support frame 12 are relatively displaced in a direction approaching each other (left and right directions in the figure), the viscous fluid 22 inside the container 20 is conversely moved upward from the center. The film damper 16 is deformed in the direction in which the film damper 16 closes left and right with the flow, and finally reaches the state shown in FIG. 3 (IV). Through these movements, the viscous fluid 22 effectively absorbs externally applied energy based on the viscous flow of the viscous fluid 22 to attenuate vibration.

On the other hand, FIG. 4 shows a state in which a force is applied to the film damper 16 in the shearing direction, that is, the main body mechanism unit 10
4 shows the operation of the film damper 16 when the support frame 12 and the support frame 12 are relatively displaced in the vertical direction in FIG. As shown in the figure, at this time, the viscous fluid 22 inside the container 20 flows mainly in the shearing direction as shown by the arrow in the figure and allows the deformation of the container 20, that is, the deformation of the film damper 16, The relative displacement between the main body mechanism unit 10 and the support frame 12 is absorbed. At that time, energy applied from the outside is absorbed based on the viscous flow of the viscous fluid 22, and the vibration is attenuated.

The above description shows a case where the main body mechanism unit 10 and the support frame 12 are relatively displaced in the horizontal direction or the vertical direction, and the main body mechanism unit 10 and the support frame are three-dimensionally and in all directions. 12 is also displaced, the deformation of the container 20, that is, the film damper 16, is allowed with the viscous flow of the viscous fluid 22, and the main body mechanism unit 10 and the support frame 12
Vibration damping effect is achieved by energy absorption when deforming following the relative displacement of.

As described above, the film damper 16 of the present embodiment
When the fixing member 24 is inserted into the fixing hole 34, no special resistance force acts on the film damper 16 so that the damper 16 is not crushed. During the fitting operation, no special force acts on the damper 16, specifically the container 20 and the viscous fluid 22 therein. Therefore, according to this mounting structure, the film damper 16 can be mounted and fixed to the mating member with good workability.

The mounting structure of this embodiment does not require a shaft which also serves as a fixing member for stirring and flowing the viscous fluid, so that no man-hour and space for providing the shaft are required, and the damper 16 is not required. Costs and installation costs can be reduced. Furthermore, since a shaft that also serves as a fixing member is not used, it is not necessary to secure a space for the shaft, and the mounting space required is small with the thin film damper 16 being able to be configured. I can do it.

Further, according to the manufacturing method of this embodiment, the fixing member 24 made of a hard resin can be easily integrated with the flexible film 18 by welding, and thus the film damper 16 can be easily formed.
The fixing member 24 can be fixed to the container 20. Furthermore, according to the manufacturing method of this example, the film damper 16 can be manufactured without waste and continuously with a small number of steps.

FIGS. 9 and 10 show another embodiment of the present invention. As shown in these figures, in this example, the fixing hole 34 on the support frame 12 side is provided with an insertion hole 58 through which the head 30 and the neck 28 of the fixing member 24 are inserted in the axial direction.
And an engagement hole 60 formed following the insertion hole 58. Here, the size of the insertion hole 58 in the direction perpendicular to the axis is larger than that of the head 30, and the size of the engaging hole 60 in the direction perpendicular to the axis is smaller than that of the head 30.

On the other hand, the slot 30 is provided on the head 30 and the neck 28.
2, the head 30 and the neck 28 are slightly elastically deformable in the direction perpendicular to the axis. In the case of this example, as shown in FIGS. 10 (I) and (II), the head 30 and a part of the neck 28 of the fixing member 24 are axially inserted into the insertion hole 58 of the fixing hole 34.

Thereafter, as shown in (III), the entire film damper 16 is moved along the mounting surface of the support frame 12 in the direction perpendicular to the axis. That is, the fixing member 24 is fixed to the fixing hole 3.
4 in the direction perpendicular to the axis. Thus, the neck 28 is engaged with the fixing hole 60 and the head 3
0 is axially engaged with the engaging hole 60.

Thus, the fixing member 24 is prevented from coming off in the axial direction. That is, the film damper 16 is fixed to the support frame 12 by the fixing member 24. Similarly, the fixing member 24 provided on the opposite surface is attached to the main body mechanism unit 10.
Fixed to. Here, the film damper 16 is inserted between the main body mechanism unit 10 and the support frame 12.

Also in the case of the mounting structure of this embodiment, when the fixing member 24 is fixed to the support frame 12, the fixing member 24 is attached to the film damper 16, specifically, the container 20 and the viscous fluid 22 therein. Therefore, the film damper 16 can be easily attached and fixed to the support frame 12 with good workability.

FIG. 11 and FIG. 12 show still another embodiment of the present invention. In this example, a plurality of locations in the circumferential direction of the head 30 in the fixing member 24 (here, 4
(A portion) is provided with a claw (projecting portion) 32 projecting in the direction perpendicular to the axis, while notches 64 corresponding to the claw 32 are provided at four positions in the circumferential direction in the fixing hole 34 on the support frame 12 side.

In the case of this mounting structure, the head 30 is fixed to the fixing hole 3
12, the position of the claw 32 and the position of the notch portion 64 are aligned as shown in FIG. Pass in the axial direction (II). And the claw 34 is the fixing hole 34
After passing through and outside it, rotate this,
The claw 34 is engaged with the periphery of the fixing hole 34 (III). Here, the fixing member 24 is in a state of being prevented from coming off in the axial direction.

In the mounting structure of this embodiment, the fixing member 24
When the film damper 16 is fixed, no force acts on the film damper 16 in the direction of crushing the film damper 16. Therefore, even in this mounting structure, the film damper 16 can be mounted and fixed to the support frame 12 with good workability.

The embodiment of the present invention has been described in detail, but this is merely an example. For example, in the above example, the case where the present invention is applied to a vibration-proof support of a disk player has been described as an example. However, the film damper 16 of the present invention can be applied to various small precision devices. It has applications to various things, such as being applicable as a damper or as a film damper for a small video camera.

In the above example, the flexible film 18 is constituted by a three-layer laminate of the resin films 18A, 18B and 18A. However, the flexible film 18 may be constituted by a single-layer film depending on the case. It can also be composed of a plurality of laminates of layers or more. In the case where a flexible film is formed by laminating resin films, the present invention does not depart from the gist of the present invention, such as various combinations of the materials of the resin film different from the above examples. The present invention can be configured and implemented in forms and aspects with various changes within the scope.

[Brief description of the drawings]

FIG. 1 is a view showing a state in which a film damper according to an embodiment of the present invention is used for vibration-proof support of a disk player.

FIG. 2 is a diagram specifically showing a configuration of a film damper of FIG.

FIG. 3 is an operation explanatory view of a film damper of the same embodiment.

FIG. 4 is an operation explanatory view different from FIG. 3 of the film damper of the same embodiment.

FIG. 5 is a view showing a procedure for mounting a film damper of the same embodiment.

FIG. 6 is a diagram illustrating a main part of a method of manufacturing a film damper of the same embodiment.

FIG. 7 is an explanatory diagram of a further main part of FIG. 6;

FIG. 8 is a view showing a state in which a fixing member is attached to the film damper by the method shown in FIGS. 6 and 7.

FIG. 9 is a diagram showing a main part of another embodiment of the present invention.

FIG. 10 is a view showing a procedure for mounting a film damper of the same embodiment.

FIG. 11 is a diagram showing a main part of another embodiment of the present invention.

FIG. 12 is a view showing a procedure for attaching a film damper of the same embodiment.

FIG. 13 is a diagram showing an example of a conventional viscous fluid-filled damper and its mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body mechanism unit 12 Support frame (support member) 16 Viscous fluid sealing damper (film damper) 18 Flexible film 20 Container 22 Viscous fluid 24 Fixing member 28 Neck 30 Head 32 Claw (projection) 34 Fixing hole 36 Stop Member 42 Fitting hole 50 Molding die 56 Cavity 60 Engagement hole 64 Notch

Claims (5)

[Claims] A viscous fluid is sealed in a container formed by closing a flexible film in a bag shape, and is inserted between a supporting member and a supported member to follow a relative displacement therebetween. And a viscous fluid-filled damper that causes a viscous fluid inside to vibrate and vibrate and dampen the viscous fluid to a mating member. The container has a thin neck portion. And a fixing member having a head having a size larger in the direction perpendicular to the axis than the neck is fixedly mounted in a state where the neck and the head protrude out of the container, while the head is provided on the side of the counterpart member. A fixing hole for passing in the axial direction is provided, and at least a part of the neck portion and the head are inserted in the fixing hole in the axial direction, and in this state, a surface of the fixing hole opposite to the insertion side. In the above, a part of the circumferential direction was cut out with respect to the neck portion The damper and the mating member having a state of fitting are formed separately from the damper and the mating member in a direction perpendicular to the axis so as to prevent the fixing member from coming off, thereby fixing the damper to the mating member. A mounting structure for a viscous fluid-filled damper, characterized in that: 2. A viscous fluid is sealed in a container formed by closing a flexible film in a bag shape, and is inserted between a supporting member and a supported member to follow their relative displacement. And a viscous fluid-filled damper that causes a viscous fluid inside to vibrate and vibrate and dampen the viscous fluid to a mating member. The container has a thin neck portion. And a fixing member having a head whose dimension in the direction perpendicular to the axis is larger than the neck is fixedly mounted with the neck and the head protruding outside the container, while the head is provided on the side of the counterpart member. And a fixing hole having an engagement hole smaller in size than the head and larger than the neck portion, and the head is axially inserted into the insertion hole. After that, the neck is moved in the direction perpendicular to the axis to engage the neck in the engagement hole. And the head is axially engaged with the engagement hole to prevent the fixing member from coming off in the axial direction, so that the damper is fixedly attached to the mating member. Viscous fluid-filled damper mounting structure. 3. A container formed by closing a flexible film in a bag-like shape and having a viscous fluid sealed therein. The container is interposed between a supporting member and a supported member to follow relative displacement therebetween. And a viscous fluid-filled damper that performs a vibration damping action by viscously flowing an internal viscous fluid to a counterpart member, and the container has a thin neck portion. And a fixing member having a head having a larger dimension in the direction perpendicular to the axis than the neck is fixedly mounted with the neck and the head protruding outside the container, while the head is provided on the side of the counterpart member. A fixing hole for passing in the axial direction is provided to allow the head to pass in the axial direction with respect to the fixing hole, and the head is provided with a protruding portion in a direction perpendicular to the axis at a predetermined circumferential position. A corresponding notch is provided in the hole at a predetermined location in the circumferential direction. The projecting portion is axially passed through the cutout portion, and the fixing member is rotated in this state so that the projecting portion is axially engaged with the peripheral portion of the fixing hole, thereby fixing the fixing member. Stop in the axial direction,
Thus, the mounting structure of the viscous fluid-filled damper is characterized in that the damper is mounted and fixed to a mating member. 4. The viscous fluid according to claim 1, wherein the fixing member is made of a hard resin, and is welded to and integrated with the flexible film. Mounting structure of enclosed damper. 5. A viscous fluid is sealed in a container formed by closing a flexible film in a bag shape, and the container has a thin neck portion and a dimension in a direction perpendicular to the axis larger than that of the neck portion. A method for manufacturing a viscous fluid-filled damper comprising a fixing member having a head and a neck and a head fixed to a state in which the head projects outside the container, wherein the flexible film is formed of a resin film. In addition, before the flexible film is closed in a bag shape, it is set in a mold of the fixing member, and in this state, a resin material of the fixing member is injected into a cavity of the molding die to form the fixing member. Manufacturing of a viscous fluid-filled damper characterized in that molding and welding to a flexible film are performed simultaneously, and then the flexible film in which the fixing member is welded is closed in a bag shape and a viscous fluid is sealed inside. Method.