JP2006029549A - Damping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damping device capable of being easily and inexpensively manufactured. <P>SOLUTION: In the damping device provided with a mass member, a mounting member and an elastic member, it provides a retaining hole and a fitting part in the elastic member whereas providing a fitted part and a mounting part in the mounting member and at the same time mounts to a counterpart material at the mounting part and makes the elastic member in one piece with the mounting member by fitting the fitting part into the fitted part and makes the mass member in one piece with the elastic member by holding end of the mass member within the retaining hole. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vibration damping device called a so-called dynamic damper.

  Conventionally, various types of damping devices are known that are attached to a counterpart member serving as a vibration generation source and suppress the vibration of the counterpart member. One type of these damping devices is a so-called dynamic damper that includes a mass member, a mounting member, and an elastic member. A vibration damping device called a dynamic damper is one in which a mass member is attached to a mating member via an attachment member, and an elastic member that elastically contacts the mass member and the attachment member, respectively, between the mass member and the attachment member. It is inserted. Hereinafter, in this specification, a vibration damping device called a dynamic damper is simply abbreviated as a vibration damping device. A partially cutaway perspective view schematically showing an example of the vibration damping device is shown in FIG. 10, and a conventional vibration damping device will be described.

  A vibration damping device 100 shown in FIG. 10 includes a mass member 101 made of metal and having a substantially rectangular parallelepiped shape, an attachment member 102 attached to a counterpart material (not shown), a mass member 101 and an attachment member 102. And an elastic member 103 interposed between and elastically contacting both. A screwing hole 105 is formed in the mass member 101, and an assembly tool 106 made of a screw is screwed into the screwing hole 105. A rubber elastic member 103 is attached to an end of the assembly tool 106 opposite to the end screwed with the mass member 101, and this elastic member 103 is vulcanized and bonded to the attachment member 102 to be integrated. It has become. Further, the attachment member 102 is provided with a hole-like attachment portion 108. The vibration damping device 100 is attached to the mating member by inserting a screw member (not shown) through the mounting portion 108 and screwing the screw member into the mating member. In the vibration damping device 100, the mass body 101 resonates using the elastic body 103 as a support spring, thereby suppressing the vibration of the counterpart material. The resonance frequency is determined by the mass of the mass member and the spring constant of the elastic member.

  Incidentally, in the vibration damping device 100 as shown in FIG. 10, the mass member 101 is attached to the elastic body 103 via an assembly tool 106 made of screws. For this reason, when manufacturing the vibration damping device 100, a step of forming a screwing hole 105 to be screwed with the assembly tool 106 in the mass member 101, or a process of screwing the assembly tool 106 into the mass member 101. A process etc. are needed. Furthermore, in the vibration damping device 100 as shown in FIG. 10, the elastic member 103 and the mounting member 102 are integrated by vulcanization bonding. However, when bonding, the mounting member 102 is subjected to surface treatment. There was also a need for a state suitable for bonding. For these reasons, there is a problem that manufacturing of the vibration damping device 100 requires a complicated process and increases the manufacturing cost. For this reason, in recent years, various vibration damping devices that reduce manufacturing costs have been developed (for example, Patent Documents 1 to 3).

  The vibration damping device disclosed in Patent Document 1 fits and integrates an elastic body and a mounting member. By fitting and integrating the elastic member and the mounting member, the number of steps required for the surface treatment described above can be reduced. However, also in this vibration damping device, the mass member and the elastic member are assembled and integrated by the pin-shaped assembly tool. For this reason, a process of drilling a hole for inserting the assembly tool into the mass member and a process of assembling the assembly tool into the mass member and assembling the assembly tool into the elastic member are still required. There was a problem that needed.

  Similarly, the vibration damping device disclosed in Patent Document 2 is also one in which the mass member and the elastic member are assembled and integrated by the pin-shaped assembly tool, and there is still a problem that still requires a large number of manufacturing steps. there were. Furthermore, in this vibration damping device, the mass member does not fall off even when the elastic member is excessively deformed by controlling the positional relationship between the mounting portion of the mounting member and the assembly tool. There is a problem that versatility is poor because there are many restrictions on the positions and dimensions of the parts and the assembly tool.

The vibration damping device disclosed in Patent Document 3 has an assembly made of a cylindrical metal material, holds the end of the mass member inside the cylinder of the assembly, and has a cylindrical assembly. A columnar assembly tool is attached to the accessory via an elastic member, and the columnar assembly tool is fixed to the attachment member. In this vibration damping device, it is not necessary to form a screw hole or the like in the mass member, but it is necessary to attach the cylindrical assembly tool, the elastic body, and the columnar assembly tool in advance to the mating member. there were. Therefore, there is a problem in that the degree of freedom of the attachment position when attaching the vibration damping device to the counterpart material is reduced, and the manufacturing cost is increased. In addition, in order to assemble the assembly tool made of a cylindrical metal material to the mass member, there is a problem that a high dimensional system is required for the assembly tool and the mass member, resulting in an increase in manufacturing cost.
Japanese Patent Laid-Open No. 9-184538 Japanese Patent Laid-Open No. 10-252819 JP 11-325169 A

  An object of this invention is to provide the damping device which can be manufactured easily and cheaply.

In the vibration damping device of the present invention that solves the above-described problem, the mass member is attached to the mating member via the attachment member, and the elastic member that elastically contacts the mass member and the attachment member between the mass member and the attachment member, respectively. A vibration damping device that is inserted and suppresses vibration generated in the counterpart material,
The elastic member has a holding portion having a holding hole having a shape corresponding to the outer shape of the end portion of the mass member, and a fitting portion continuous to the end portion of the holding portion,
The mounting member has a fitted portion that fits into the fitting portion, and an attachment portion that extends from the fitted portion and is attached to the mating member,
The elastic member and the mounting member are integrated by fitting the fitting portion and the fitted portion, and the mass member and the elastic member are integrated by holding the end of the mass member in the holding hole. Features.

  Preferably, the fitted portion is formed in a groove shape, and the fitted portion and the fitted portion are slide-fitted.

  It is preferable that the fitting portion is formed in a hole shape, and the fitting portion is press-fitted and fitted into the fitting portion.

  Preferably, the fitted portion is formed in a hole shape, and the fitted portion and the fitted portion are fitted with the elastic member formed integrally with the mounting member by insert molding.

  It is preferable that the holding hole is formed in a through hole shape, and the holding portion is formed in a substantially frame shape.

  It is preferable that the attachment member has a stopper portion that is erected from the fitted portion and restricts excessive deformation of the holding portion.

  It is preferable that the holding part is interposed between the mass member and the stopper part.

  In the vibration damping device of the present invention, the elastic member and the mounting member are fitted and integrated with the fitting portion and the fitted portion, and the mass member and the elastic member are held at the end of the mass member in the holding hole. And integrated. For this reason, unlike the conventional vibration damping device, it is not necessary to provide a screwing hole for screwing or the like on the mass member or to perform a surface treatment on the mounting member, and it can be manufactured easily and inexpensively. .

  Furthermore, the mass member can be manufactured simply by cutting out the long material, and the resonance frequency can be set to a desired frequency by appropriately adjusting the length in the long direction. For this reason, it is possible to easily and inexpensively manufacture various damping devices that can suppress vibrations of various frequencies.

The fitting portion and the fitted portion can be fitted by various known mechanisms, but are preferably fitted by the following mechanisms (1) to (3), for example. In any case, the fitting portion and the fitted portion can be easily and firmly fitted.
(1) The fitted portion is formed in a groove shape, and the fitted portion and the fitted portion are slide-fitted.
(2) The fitted portion is formed in a hole shape, and the fitted portion is press-fitted into the fitted portion to be fitted.
(3) The fitting portion is formed in a hole shape, and the elastic member is formed integrally with the mounting member by insert molding, and the fitting portion and the fitting portion are fitted.

  Further, when the holding hole is provided in the shape of a through hole and the holding portion is formed in a substantially frame shape, the end of the mass member inserted into the holding hole can be visually recognized from the outside of the holding portion through the holding hole. it can. For this reason, it can be easily confirmed whether or not the end portion of the mass member is reliably inserted into the holding hole, and workability when attaching the mass member and the holding portion is improved.

  Furthermore, when the mounting member is provided with a stopper portion that is erected from the fitted portion and restricts excessive deformation of the holding portion, the holding portion is prevented from being excessively deformed to prevent the mass member from dropping from the holding portion. Is done.

  In this case, by providing the holding portion so as to be interposed between the mass member and the stopper portion, the contact between the stopper portion and the mass member is prevented, and the generation of interference noise is prevented. For example, when the mass member and the mounting member are made of metal, a loud interference sound (metal sound) is generated when the mass member and the mounting member come into contact with each other, but the holding portion is interposed between the mass member and the stopper portion. There is an advantage that it is possible to prevent the generation of interference sound by providing it so as to function as a buffer material.

  Hereinafter, an example of the vibration damping device of the present invention will be described as an embodiment of the present invention, and the vibration damping device of the present invention will be described. The vibration damping device of the present embodiment has a fitted portion formed in a groove shape, and the fitted portion and the fitted portion are slide-fitted. FIG. 1 is a perspective view schematically showing an example of the vibration damping device of the present invention, and FIG. 2 is a perspective view schematically showing a state in which the mass member and the elastic member are disassembled in the vibration damping device shown in FIG. Shown in FIG. 3 is a cross-sectional view schematically showing a state in which the vibration damping device shown in FIG. 1 is cut in the A-A ′ direction in FIG. 1. FIG. 4 is a perspective view schematically showing a state in which the mounting member and the elastic member are disassembled in the vibration damping device shown in FIG. 1, and the mounting member and the elastic member are cut in the BB ′ direction in FIG. FIG. 5 is a cross-sectional view schematically showing the state.

  The vibration damping device 1 according to the present embodiment is attached to a beam of a building, and attenuates vibration generated on the upper floor of the building, and suppresses vibration transmission to the lower floor to reduce noise. is there.

  As shown in FIG. 1, the vibration damping device 1 of the present embodiment includes a mass member 2, an attachment member 3, and an elastic member 5.

  The mass member 2 is made of a long metal material having a substantially rectangular parallelepiped shape.

  The elastic member 5 is made of rubber and has a substantially frame-shaped holding portion 6 and a fitting portion 7 that is continuous with an end portion of the holding portion 6. Of these, the holding portion 6 is a portion that connects the elastic member 5 and the mass member 2, and the fitting portion 7 is a portion that connects the elastic member 5 and the mounting member 3.

  A holding hole 10 is provided in the holding unit 6. As shown in FIGS. 2 and 3, the holding hole 10 communicates with the first hole portion 14 that opens to the front surface 9 side of the holding portion 6 that serves as the insertion end of the mass member 2, and the first hole portion 14. The holding part 6 is formed in a through-hole shape including a second hole part 24 opened on the back surface 19 side. The first hole portion 14 is formed in a shape corresponding to the outer shape of the end portion of the mass member 2, and the second hole portion 24 is formed with a smaller diameter than the first hole portion 14. Furthermore, the outer edge part of the holding hole 10 among the parts on the front surface 9 side of the holding part 6 is formed in a tapered shape as shown in FIG.

  As shown in FIGS. 4 and 5, the fitting portion 7 has a shape in which the holding portion 6 side portion (spring portion 15) is reduced in diameter and the end portion portion (fitting end portion 16) is increased in diameter. Yes. The fitting end portion 16 has a substantially plate-like shape in which both ends in the extending direction (clamping portion 17) are expanded in diameter and the central portion (groove portion 18) is once reduced in diameter. The groove portion 18 has a shape corresponding to an inner wall 21 of the fitted portion 20 described later, and the clamping portion 17 is larger than the fitted portion 20.

  The attachment member 3 is made of metal and has a fitted portion 20 that fits with the fitting portion 7 of the elastic member 5 and two attachment portions 25 that extend from two ends of the fitted portion 20. The fitted portion 20 is formed in a shape in which a substantially central portion of the metal plate is cut out in a groove shape opened to one side. Each mounting portion 25 is erected on both end sides of the opening 26 of the fitted portion 20 and faces each other. A through hole-like mounting hole 27 is provided at the extended end of each mounting portion 25. Reinforcing ribs 30 are provided at two predetermined locations on the base of each mounting portion 25. The reinforcing rib 30 prevents the mounting portion 25 from being deformed and ensures the strength of the mounting member 3.

  Further, the attachment member 3 is provided with a stopper portion 35 extending in the same direction as the attachment portion 25 from a position opposite to the opening 26 between the attachment portions 25 of the fitted portion 20. Has been. The attachment member 3 is formed by punching a plate material.

  As shown in FIG. 2, the mass member 2 and the elastic member 5 are integrated by holding the end portion 36 of the mass member 2 in the holding hole 10 of the holding portion 6. At this time, since the elastic member 5 holds the mass member 2 while the inner wall 37 of the holding hole 10 is in elastic contact with the end portion 36 of the mass member 2, the elastic member 5 is more firmly integrated with the mass member 2. Further, the outer edge portion of the holding hole 10 on the front surface 9 side of the holding portion 6 is formed in a tapered shape, and this tapered portion is used when the end portion 36 of the mass member 2 is inserted into the holding hole 10. Since it acts as a guide, the workability of inserting the end portion 36 of the mass member 2 into the holding hole 10 is improved.

  Further, as shown in FIG. 3, the end portion 36 of the mass member 2 is held in the first hole portion 14 of the holding hole 10, and a part of the end surface of the end portion 36 passes through the second hole portion 24 to hold the holding portion 6. It is visually recognized from the back 19 side. For this reason, the mass member 2 can be inserted into the holding hole 10 while viewing the end face of the mass member 2 inserted into the holding hole 10 from the back surface 19 side of the holding portion 6. Therefore, it can be easily confirmed whether or not the end portion 36 of the mass member 2 is reliably inserted into the holding hole 10, and the workability of inserting the end portion 36 of the mass member 2 into the holding hole 10 is improved. improves. Since the second hole portion 24 has a smaller diameter than the first hole portion 14, the end surface of the mass member 2 is in contact with and fixed to the peripheral edge portion of the second hole portion 24. For this reason, the malfunction of the end part 36 of the mass member 2 passing through the holding hole 10 to the back surface 19 side of the holding part 6 does not occur.

  Since the second hole portion 24 of the holding hole 10 opens to the back surface 19 side of the holding portion 6, when the end portion 36 of the mass member 2 is inserted into the holding hole 10, Air escapes to the outside through the second hole 24. For this reason, the workability | operativity at the time of inserting the edge part 36 of the mass member 2 in the holding hole 10 further improves.

  As shown in FIG. 4, the elastic member 5 and the attachment member 3 are integrated by the fitting portion 7 being slidably fitted into the fitted portion 20 from the opening 26. In the elastic member 5, the groove portion 18 of the fitting end portion 16 is in contact with the inner wall 21 of the fitted portion 20, and the two sandwiching portions 17 are in contact with the peripheral portion of the fitted portion 20 in the vertical direction. Further, as shown in FIG. 5, the elastic member 5 is more firmly integrated with the attachment member 3 in order that the two holding portions 17 are held in elastic contact with the peripheral portion of the fitted portion 20 in the vertical direction.

  The vibration damping device 1 of the present embodiment is attached to the mating member by inserting a mounting protrusion (not shown) provided on the mating member into the mounting hole 27 of the mounting member 3. When vibration occurs in the mating member, the vibration is transmitted to the mounting member 3 and further transmitted to the elastic member 5 integrated with the mounting member 3. And since the mass member 2 currently hold | maintained at the elastic member 5 resonates by using the spring part 15 of the elastic member 5 as a support spring, the vibration of a counterpart material is suppressed.

  In the vibration damping device 1 of the present invention, the elastic member 5 functions as an assembly tool for holding the mass member 2 and also functions as a support spring when the mass member 2 resonates. For this reason, the number of parts required for the vibration damping device 1 is reduced, and the cost required for manufacturing is reduced.

  In addition, the elastic member 5 and the attachment member 3 are integrated by fitting the fitting portion 7 and the fitted portion 20, and the mass member 2 and the elastic member 5 have the end portion 36 of the mass member 2 at the holding hole 10. It is held inside and integrated. Thus, since the mass member 2, the elastic member 5, and the attachment member 3 are easily integrated with a simple structure, the mass member 2 and the attachment member 3 do not require special processing. Therefore, the cost required for manufacturing the vibration damping device 1 is further reduced. Further, in the vibration damping device 1 of the present embodiment, the fitting between the fitting portion 7 and the fitted portion 20 is a slide fitting, and the assembly for fitting the fitting portion 7 and the fitted portion 20 together. The operation is very easy. For this reason, the cost required for manufacturing the vibration damping device 1 is further reduced. Furthermore, since the mass body is held by the elastic member 5, a high dimensional system is not required for the elastic member 5 and the mass body, and the manufacturing cost is further reduced.

  Furthermore, if the length of the mass member 2 in the longitudinal direction is changed, it is possible to cope with vibrations of various frequencies.

  In the vibration damping device 1 of the present embodiment, since the mounting member 3 is provided with the stopper portion 35, even when the counterpart material vibrates excessively, the holding portion 6 is restricted from being excessively deformed, and the holding portion The falling off of the mass member 2 due to the excessive deformation of 6 is prevented. In the vibration damping device 1 of the present embodiment, the attachment portion 25 and the stopper portion 35 are erected in the same direction. When the attachment member 3 and the elastic member 5 are integrated, the elastic member 5 The holding part 6 is surrounded by the attachment part 25 and the stopper part 35 from three directions. For this reason, in the vibration damping device 1 of the present embodiment, the mounting portion 25 also exhibits the same effect as the stopper portion 35.

  Furthermore, the holding part 6 is interposed between the stopper part 35 and the mass member 2 and between the attachment part 25 and the mass member 2, and the stopper part 35 and the attachment part 25 are made of metal. It does not come into contact with the mass member 2. For this reason, it is prevented that the stopper part 35 and the attachment part 25 contact the mass member 2, and an interference sound (metal sound) is produced.

  The shape of the stopper portion 35 is not limited to this, and may be a shape that can restrict the holding portion 6 from being deformed excessively. For example, the stopper part 35 may be formed in a shape that extends from a part of the attachment part 25 and surrounds the holding part 6 together with the attachment part 25, or is configured to restrict excessive deformation of the holding part 6 only by the stopper part 35. Also good.

  In the vibration damping device 1 of the present embodiment, two mounting portions 25 are provided on each mounting member 3 so as to face each other, so the mounting direction to the mating member can be selected from two directions. For this reason, the damping device 1 of this embodiment is excellent in versatility.

  In the vibration damping device 1, the attachment portion 25 is provided with the through-hole-like attachment hole 27, but the shape of the attachment portion 25 is not limited to this. For example, the vibration damping device 1 may be attached to the counterpart material by providing a projection on the attachment portion 25, providing a through hole in the counterpart material, and inserting the projection of the attachment portion 25 into the through hole of the counterpart material. The part 25 may be provided in other shapes, and the vibration damping device 1 may be attached to the counterpart material by other methods.

  In this embodiment, the elastic member is made of rubber. However, the elastic member is not limited to this, and various elastic materials having a spring constant corresponding to a desired resonance frequency can be used. Further, in the present embodiment, the holding hole of the elastic member is formed in a through-hole shape having a small diameter on the back side, but is provided in a through-hole shape having a substantially uniform cross section in which the front side and the back side have substantially the same shape. Also good. In this case, the end face of the mass member does not contact the holding portion, and the holding portion is not interposed between the stopper portion and the mass member, but the end face of the mass member is seen from the back side of the holding portion through the holding hole. Visible. For this reason, workability | operativity which inserts the edge part of a mass member in a holding hole improves.

  And in this embodiment, although the holding | maintenance part is formed in the substantially frame shape, it can also be formed in another shape. For example, the holding hole may be provided in a dead end shape and the holding portion may be formed in a substantially box shape. In this case, the end face of the mass member cannot be visually recognized from the back side of the holding portion through the holding hole, but the holding portion is interposed between the stopper portion and the mounting portion and the mass member. For this reason, a stopper part and an attaching part do not contact a mass member, and generation | occurrence | production of an interference sound is prevented.

  Furthermore, although the damping device 1 of this embodiment is attached to the beam of a building, the damping device 1 of this invention is not restricted to this, It can also be used for another use. For example, it can be attached to a pillar or joist of a building, or can be attached to a body frame of an automobile.

Hereinafter, a vibration damping device of the present invention will be described with reference to the drawings.

Example 1
The vibration damping device of the present embodiment is the same as that of the above-described embodiment except for the shapes of the fitting portion and the fitted portion. FIG. 6 is a perspective view schematically showing a state in which the mounting member and the elastic member are disassembled in the vibration damping device of the present embodiment, and the mounting member and the elastic member are the same as BB ′ shown in FIG. FIG. 7 is a cross-sectional view schematically showing the state cut in the direction.

  In the vibration damping device of the present embodiment, the fitted portion 20 is formed in a through hole shape. And the fitting part 7 is formed in the same shape as the thing of embodiment except the protrusion-shaped knob part 40 being provided in the front-end | tip of the fitting end part 16. As shown in FIG.

  In the vibration damping device of the present embodiment, when attaching the elastic member 5 to the attachment member 3, first, the knob portion 40 is passed through the fitted portion 20. And the fitting part 7 is press-fitted in the to-be-fitted part 20 by pulling the knob part 40 from the back surface side, and fitting is integrated. In the vibration damping device of the present embodiment, the elastic member 5 and the attachment member 3 are fitted and integrated by press-fitting, so that the integration of the elastic member 5 and the attachment member 3 becomes stronger, and the elastic member 5 There is an advantage that the mounting member 3 is difficult to be detached from each other.

  Further, similarly to the vibration damping device of the embodiment, the elastic member 5 functions as an assembly tool for holding the mass member and also as a support spring, and thus the effect of reducing the number of parts and reducing the manufacturing cost is exhibited. The Further, like the vibration damping device of the embodiment, the mass member, the elastic member 5 and the attachment member 3 are easily integrated with a simple structure, so that the manufacturing cost of the vibration damping device is further reduced.

(Example 2)
The vibration damping device of the present embodiment is the same as that of the above-described embodiment except for the shapes of the fitting portion and the fitted portion. FIG. 8 is a perspective view schematically showing the mounting member of the vibration damping device of the present embodiment, and a mold for insert-molding the mounting member and the elastic member, and FIG. 1 shows the mounting member and the elastic member in FIG. FIG. 9 is a cross-sectional view schematically showing a state cut in the same direction as BB ′ shown.

  In the vibration damping device of the present embodiment, the attachment member 3 is formed in the same shape as that of the first embodiment. The elastic member 5 is formed in the same shape as that of the embodiment except that the holding hole 10 of the holding portion 6 is formed in a dead end hole shape and the holding portion 6 is formed in a box shape. The elastic member 5 and the attachment member 3 are integrally formed and fitted by insert molding. In the vibration damping device of the present embodiment, the elastic member 5 and the attachment member 3 are formed as follows.

  First, a mold 45 is prepared in which a shape in which the mounting member 3 and the elastic member 5 are integrated is formed on the mold surface 46. Next, the mounting member 3 is placed in the molding die 45, and an unvulcanized rubber material is injected into the molding die 45 on which the mounting member 3 is placed. Thereafter, the unvulcanized rubber material is vulcanized and solidified to form the elastic body integrally with the mounting member 3. Since the obtained elastic member 5 is molded into a shape fitted with the mounting member 3, the molding process of the elastic member 5 and the integration process of the elastic member 5 and the mounting member 3 can be performed simultaneously. The elastic member 5 and the mounting member 3 can be firmly integrated, and the number of manufacturing steps can be further reduced and the manufacturing cost can be further reduced.

  And the damping device of a present Example also reduces a manufacturing cost by the elastic member 5 acting as an assembly tool holding a mass member and also as a support spring, like the damping device of the embodiment. Since the mass member, the elastic member 5 and the mounting member 3 are easily integrated with a simple structure, the manufacturing cost is reduced.

It is a perspective view showing typically an example of a vibration damping device of the present invention. It is a perspective view which represents typically a mode that the mass member and the elastic member were decomposed | disassembled among the damping devices of this invention shown in FIG. It is sectional drawing which represents typically the damping device of this invention shown in FIG. It is a perspective view which represents typically a mode that the attachment member and the elastic member were decomposed | disassembled among the damping devices of this invention shown in FIG. It is sectional drawing which represents typically the cross section of an attachment member and an elastic member among the damping devices of this invention shown in FIG. It is a perspective view which represents typically a mode that the attachment member and the elastic member were decomposed | disassembled among the damping devices of Example 1. FIG. It is sectional drawing which represents typically the cross section of an attachment member and an elastic member among the damping devices of Example 1. FIG. It is a perspective view which represents typically the attachment member of the damping device of Example 2, and the shaping | molding die for insert-molding an attachment member and an elastic member. It is sectional drawing which represents typically the cross section of the attachment member 3 and the elastic member 5 among the damping devices of Example 2. FIG. It is a partially cutaway perspective view schematically showing a conventional vibration damping device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100: Damping apparatus 101: Mass member 102: Mounting member 103: Elastic member 105: Screwing hole 106: Assembly tool 1: Damping apparatus 2: Mass member 3: Mounting member 5: Elastic member 6: Holding part 7: Fitting part 10: Holding hole 20: Fitted part 25: Mounting part 35: Stopper part

Claims (7)

The mass member is attached to the mating member via the mounting member, and an elastic member elastically contacting the mass member and the mounting member is inserted between the mass member and the mounting member, A damping device that suppresses vibrations generated;
The elastic member has a holding portion having a holding hole having a shape corresponding to the outer shape of the end portion of the mass member, and a fitting portion continuous to the end portion of the holding portion,
The mounting member has a fitted portion that fits with the fitting portion, and an attachment portion that extends from the fitted portion and is attached to the mating member,
The elastic member and the mounting member are integrated by fitting the fitting portion and the fitted portion, and the mass member and the elastic member are held by the end of the mass member in the holding hole. The vibration damping device is characterized by being integrated.   The vibration damping device according to claim 1, wherein the fitted portion is formed in a groove shape, and the fitting portion and the fitted portion are slide-fitted.   The vibration damping device according to claim 1, wherein the fitted portion is formed in a hole shape, and the fitting portion is press-fitted into and fitted into the fitted portion.   The said fitting part is formed in hole shape, and the said elastic member is integrally formed with the said attachment member, and the said fitting part and the said to-be-fitted part are fitted by the insert molding. Vibration damping device.   The vibration damping device according to claim 1, wherein the holding hole is provided in a through hole shape, and the holding portion is formed in a substantially frame shape.   2. The vibration damping device according to claim 1, wherein the attachment member has a stopper portion that is erected from the fitted portion and restricts excessive deformation of the holding portion.   The vibration damping device according to claim 6, wherein the holding portion is interposed between the mass member and the stopper portion.

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