JP2010174958A - Attachment structure of mass member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the man-hour or cost required for attachment of a mass member to a bracket in an attachment structure of mass member for attaching the mass member to the bracket having a cylindrical part into which a rubber bush is fitted. <P>SOLUTION: A recessed part 10a for housing the mass member 4 is formed on the inner circumferential surface of a cylindrical part 10. The mass member 4 is attached to the bracket 1 by fitting the rubber bush 2 to the cylindrical part 10 while housing the mass member 4 in the recessed part 10a. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mass member attachment structure for attaching a mass member to a bracket having a cylindrical portion into which a rubber bush is inserted.

Conventionally, in a torque rod, an engine mount, a suspension link, or the like formed by inserting a rubber bush into a cylindrical portion of a bracket, it is known to attach a mass member to the bracket in order to suppress resonance of a vehicle body side member. (See, for example, Patent Documents 1 and 2).
JP 2008-95821 A Japanese Patent Laid-Open No. 8-233030

  By the way, as a means for attaching the mass member to the bracket, bolt fastening or welding can be considered. However, if this is done, the number of man-hours increases, and bolts and the like are required, resulting in high costs.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a mass member mounting structure for attaching a mass member to a bracket having a cylindrical portion into which a rubber bush is inserted. It is to reduce the man-hours and costs required for installation.

  A first invention is a mass member mounting structure in which a mass member is attached to a bracket having a cylindrical portion into which a rubber bush is fitted, and a concave portion in which the mass member is accommodated is provided on an inner peripheral surface of the cylindrical portion. The mass member is formed and is attached to the bracket by accommodating the mass member in the concave portion and fitting the rubber bush into the cylindrical portion.

  Thereby, since the mass member is attached to the bracket by accommodating the mass member in the concave portion of the inner peripheral surface of the cylindrical portion of the bracket and fitting the rubber bush into the cylindrical portion, the bolt is used to attach the mass member to the bracket. There is no need for fastening or welding. For this reason, the man-hour and cost which are required for attaching a mass member to a bracket can be reduced.

  A second invention is characterized in that, in the first invention, a convex portion is formed on a portion corresponding to the concave portion on the outer peripheral surface of the cylindrical portion.

  As a result, since the convex portion is formed in the portion corresponding to the concave portion on the outer peripheral surface of the cylindrical portion, sufficient strength of the cylindrical portion is ensured even though the concave portion is formed on the inner peripheral surface of the cylindrical portion. can do.

  A third invention is characterized in that in the first or second invention, further provided is a displacement limiting means for limiting the displacement of the mass member in the cylinder axis direction.

  Thereby, the displacement of the mass member in the cylinder axis direction can be limited.

  In a fourth aspect based on the third aspect, the displacement limiting means has a pair of wall portions formed so as to extend outward in the cylindrical radial direction at both ends in the cylindrical axis direction of the mass member. The cylindrical portion is interposed between the both wall portions.

  Thereby, since the cylinder part is interposed between the pair of wall parts formed so as to extend outward in the cylinder radial direction at both ends in the cylinder axis direction of the mass member, the displacement of the mass member in the cylinder axis direction is limited. can do.

  According to a fifth invention, in the third invention, the displacement limiting means includes a flange portion formed so as to extend outward in the cylinder radial direction at an end portion on one side in the cylinder axis direction of the rubber bush, and the recess. And a lid portion that covers and closes the end portion on the other side in the cylinder axis direction, and the flange portion and the lid portion are configured to sandwich the mass member.

  As a result, the flange portion formed so as to extend outward in the cylinder radial direction at the end portion on the one side in the cylinder axis direction of the rubber bush, and the lid portion covering and closing the end portion on the other side in the cylinder axis direction of the recess portion. Since the member is sandwiched, the displacement of the mass member in the cylinder axis direction can be limited.

  According to a sixth aspect of the present invention based on the third aspect, the displacement limiting means includes a flange portion formed at the end portion on one side in the cylindrical axis direction of the rubber bush so as to extend outward in the cylindrical radial direction, and the cylindrical portion. A flange portion formed so as to extend outward in the cylindrical radial direction at an end portion on one side in the cylindrical axis direction, and a wall formed so as to extend outward in the cylindrical radial direction at an end portion on one side in the cylindrical axial direction of the mass member And the both flange portions are configured to sandwich the wall portion.

  As a result, a flange portion formed so as to extend outward in the cylinder radial direction at the end portion on the one side in the cylinder axial direction of the rubber bush, and an outer end in the cylinder radial direction at the end portion on the one side in the cylindrical axis direction of the cylindrical portion. Since the formed flange portion sandwiches a wall portion formed so as to extend outward in the cylinder radial direction at the end portion on one side in the cylinder axis direction of the mass member, the displacement of the mass member in the cylinder axis direction is limited. be able to.

  According to the present invention, since the mass member is attached to the bracket by accommodating the mass member in the concave portion of the inner peripheral surface of the cylindrical portion of the bracket and fitting the rubber bush into the cylindrical portion, the mass member is attached to the bracket. However, it is not necessary to perform bolt fastening or welding, and the man-hours and costs required for attaching the mass member to the bracket can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
In the present embodiment, as shown in FIGS. 1 to 3, rubber bushes 2 and 3 as vibration isolator are applied to a torque rod R of an automobile, and this torque rod R is placed horizontally in an engine room of an automobile not shown. The lower end of the power plant mounted on the vehicle is connected to the vehicle body side member, so that a large driving reaction force acts, for example, during a sudden acceleration of an automobile, and the entire power plant may swing back and forth like a pendulum. This is to regulate this shaking.

  In this embodiment, the front end portion (left end portion in FIG. 1) of the torque rod R is connected to the power plant, while the rear end portion (right end portion in FIG. 1) of the torque rod R is connected to a member on the vehicle body side. Has been. That is, the torque rod R includes an aluminum alloy bracket 1 in which a hollow cylindrical large cylindrical portion 10 and a small cylindrical portion 11 are provided in parallel at both ends in the longitudinal direction, and the body of the two cylindrical portions 10 and 11 is a vehicle body. The first rubber bush 2 is press-fitted and fixed inside the large cylinder portion 10 disposed on the rear side, and the vehicle body frame is fastened by bolts (not shown) fitted into the inner cylinder 20 of the first rubber bush 2. To be concluded.

  On the other hand, at the end portion (front end portion) of the torque rod R disposed on the front side of the vehicle body, the second rubber bush 3 is fitted and fixed inside the small cylinder portion 11, and the inner cylinder body 30 of the second rubber bush 3 is attached. It is fastened to the power plant by an inserted bolt (not shown).

  The first rubber bush 2 includes a hollow cylindrical metal inner cylinder 20, a hollow cylindrical resin outer cylinder 21 provided coaxially with the inner cylinder 20 on the outer periphery of the inner cylinder 20, A rubber elastic body 22 is provided between the cylinders 20 and 21 and connects the cylinders 20 and 21 to each other. The inner cylinder 20 has a longer length in the cylinder axis direction than the outer cylinder 21, and both ends in the cylinder axis direction are located on the outer side in the cylinder axis direction than both ends in the cylinder axis direction of the outer cylinder 21. .

  The second rubber bush 3 includes a hollow cylindrical metal inner cylinder 30, a hollow cylindrical resin outer cylinder 31 provided coaxially with the inner cylinder 30 on the outer periphery of the inner cylinder 30, A rubber elastic body 32 is provided between the cylinders 30 and 31 and connects the cylinders 30 and 31 to each other. The inner cylinder body 30 has a longer length in the cylinder axis direction than the outer cylinder body 31, and both end parts in the cylinder axis direction are located outside the both end parts in the cylinder axis direction of the outer cylinder body 31. .

  A mass member (dead weight) 4 is attached and fixed to the bracket 1 in order to suppress resonance of the body frame. Hereinafter, the mounting structure of the mass member 4 will be described.

  A concave portion 10a into which the mass member 4 is fitted and accommodated is formed on the rear side of the vehicle body on the inner peripheral surface of the large cylinder portion 10, and the concave portion 10a penetrates the large cylinder portion 10 in the cylinder axis direction. On the outer peripheral surface of the large cylinder portion 10, a convex portion 10b is formed in a portion corresponding to the concave portion 10a in order to ensure sufficient strength of the large cylinder portion 10.

  The mass member 4 is formed so as to extend in the cylinder axis direction and substantially match the shape of the recess 10 a, and the inner peripheral surface thereof is substantially the same curved surface as the inner peripheral surface of the large cylindrical portion 10. Wall portions 40, 40 extending outward in the cylinder radial direction are formed at both ends in the cylinder axis direction of the mass member 4, and the mass member 4 is attached to the bracket 1 between the both wall portions 40, 40. In this state, the bottom of the concave portion 10a and the convex portion 10b of the large cylinder portion 10 are interposed, thereby restricting the displacement of the mass member 4 in the cylinder axis direction (the mass member 4 is fixed in the cylinder axis direction). It has become. That is, both wall portions 40, 40 constitute a displacement limiting means.

  Then, after the mass member 4 is fitted and accommodated in the recess 10a (see FIGS. 2 and 3), the first rubber bush 2 is fitted and fixed to the large cylinder portion 10 (see FIG. 1). It is fixedly attached to the bracket 1. Thus, the displacement of the mass member 4 in the direction perpendicular to the cylinder axis is limited by press-fitting the first rubber bush 2 into the large cylinder portion 10.

-Effect-
As described above, according to the present embodiment, the mass member 4 is accommodated in the concave portion 10 a on the inner peripheral surface of the large cylinder portion 10 in the bracket 1 and the first rubber bush 2 is fitted into the large cylinder portion 10. Since it is attached to the bracket 1, it is not necessary to perform bolt fastening or welding to attach the mass member 4 to the bracket 1. For this reason, the man-hour and cost which are required for attaching the mass member 4 to the bracket 1 can be reduced.

  Moreover, since the convex part 10b is formed in the part corresponding to the recessed part 10a in the outer peripheral surface of the large cylinder part 10, although the recessed part 10a is formed in the inner peripheral surface of the large cylinder part 10, the large cylinder part 10 Sufficient strength can be ensured.

  Furthermore, since the large cylinder part 10 is interposed between a pair of wall parts 40 and 40 formed so as to extend outward in the cylinder radial direction at both ends in the cylinder axis direction of the mass member 4, the cylinder axis of the mass member 4 Directional displacement can be limited.

  Furthermore, since the outer cylinders 21 and 31 of the rubber bushes 2 and 3 are made of resin, tolerances are absorbed when the rubber bushes 2 and 3 are fitted into the cylinder portions 10 and 11 of the bracket 1. Can do.

  In addition, in this embodiment, although the mass member 4 is attached to the large cylinder part 10, you may attach to the small cylinder part 11, and may attach to both. The mounting structure is substantially the same as described above.

  In the present embodiment, the outer cylinders 21 and 31 are made of resin. However, the present invention is not limited to this, and may be made of metal, for example. However, from the viewpoint of absorbing tolerances, resin is better.

(Embodiment 2)
In this embodiment, as shown in FIGS. 4 to 6, a rubber bush 5 as a vibration isolator is applied to an automobile engine mount M, and this engine mount M is provided between an automobile power plant (not shown) and the vehicle body. In order to support the load of the power plant and absorb or attenuate the vibration from the power plant, the transmission of vibration to the vehicle body is suppressed.

  That is, the rubber bush 5 includes a hollow cylindrical metal inner cylinder 50, a hollow cylindrical metal outer cylinder 51 provided coaxially with the inner cylinder 50 on the outer periphery of the inner cylinder 50, A rubber elastic body 52 is provided between the cylinders 50 and 51 and connects the cylinders 50 and 51 to each other. The inner cylinder 50 is longer in the cylinder axis direction than the outer cylinder 51, and both ends in the cylinder axis direction are located on the outer side in the cylinder axis direction than both ends in the cylinder axis direction of the outer cylinder 51. . Two metal mounting members are integrally attached to the outer periphery of the metal bracket 6 having a hollow cylindrical tube portion 60 in which the rubber bush 5 is press-fitted and fixed. While the inner cylinder 50 is connected to a body frame (not shown) on the vibration receiving side by 61, 61, the inner cylinder 50 is vibrated by brackets (not shown) whose both ends in the cylinder axis direction are coupled by bolts or the like. It is connected to the power plant on the source side.

  A flange portion 51a extending outward in the cylinder radial direction is formed at substantially one half in the cylinder circumferential direction so as not to interfere with the mounting members 61, 61 at the end portion on the one side in the cylinder axis direction of the outer cylinder body 51. A rubber stopper 53 is formed on the end surface of the flange portion 51a on one side in the cylinder axis direction.

  The bracket 6 includes, in addition to the tube portion 60, a first flange portion 62 formed by bending an end portion of the tube portion 60 on one side in the tube axis direction (front side in FIG. 5) 90 degrees outward in the tube diameter direction. The second flange portion 63 is formed by bending the end of the tube portion 60 on the other side in the tube axis direction (the back side in FIG. 5) 90 degrees inward in the tube diameter direction. Thus, the rubber bush 5 is received by the second flange portion 63 by projecting the second flange portion 63 inward in the cylinder radial direction.

  A mass member 4 is attached and fixed to the bracket 6 in order to suppress resonance of the body frame. Hereinafter, the mounting structure of the mass member 4 will be described.

  A concave portion 60a into which the mass member 4 is fitted and accommodated is formed on the upper side of the inner peripheral surface of the cylindrical portion 60. The concave portion 60a has an end portion on the other side in the cylindrical axis direction (the rear side in FIG. 5). A lid 60b is formed to cover and close the cover.

  The mass member 4 is formed so as to extend in the cylinder axis direction and substantially match the shape of the recess 60 a, and the inner peripheral surface thereof is substantially the same curved surface as the inner peripheral surface of the cylindrical portion 60. When the mass member 4 is attached to the bracket 6, the mass member 4 is sandwiched by the flange portion 51 a of the outer cylinder body 51 and the lid portion 60 b of the cylinder portion 60 from both sides in the cylinder axis direction, and the displacement in the cylinder axis direction is limited. It is like that. That is, the flange part 51a and the cover part 60b constitute a displacement limiting means.

  Then, after the mass member 4 is fitted and accommodated in the concave portion 60a (see FIGS. 5 and 6), the rubber bush 5 is fitted and fixed to the cylindrical portion 60 (see FIG. 4), thereby the bracket 6 It is attached and fixed to. In this way, by pressing the rubber bush 5 into the cylindrical portion 60, the displacement of the mass member 4 in the direction perpendicular to the cylindrical axis is limited.

-Effect-
As described above, according to the present embodiment, the flange portion 51a formed to extend outward in the cylinder radial direction at the end portion on the one side in the cylinder axis direction of the rubber bush 5, and the end portion on the other side in the cylinder axis direction of the recess 60a. Since the mass member 4 is sandwiched between the lid portion 60b that covers and closes the mass member 4, the displacement of the mass member 4 in the cylinder axis direction can be limited.

  About the other point, the effect similar to Embodiment 1 is acquired.

(Embodiment 3)
The present embodiment is different from the second embodiment in the configuration of the mass member 4 and the recess 60a, and is the same as the second embodiment in other respects. Hereinafter, the difference will be described with reference to FIGS.

  The concave portion 60a is formed so as to be narrowed from the outer side in the cylinder radial direction toward the inner side. The mass member 4 is formed so as to extend in the cylinder axis direction and substantially match the shape of the recess 60 a, and the inner peripheral surface thereof is substantially the same curved surface as the inner peripheral surface of the cylindrical portion 60. By forming the mass member 4 and the recess 60a in this way, the displacement of the mass member 4 in the direction perpendicular to the cylinder axis is restricted by the recess 60a.

  Then, after the mass member 4 is fitted and accommodated in the recess 60a (see FIGS. 8 and 9), the rubber bush 5 is fitted and fixed to the cylindrical portion 60 (see FIG. 7), so that the bracket 6 It is attached and fixed to.

-Effect-
As described above, according to the present embodiment, since the displacement of the mass member 4 in the direction perpendicular to the cylinder axis is limited by the recess 60a, the workability of inserting the rubber bush 5 into the cylinder portion 60 can be improved.

  About the other point, the effect similar to Embodiment 2 is acquired.

(Embodiment 4)
The present embodiment is different from the second embodiment in the configuration of the mass member 4 and the recess 60a, and is the same as the second embodiment in other respects. Hereinafter, the difference will be described with reference to FIGS.

  A through hole 60c that penetrates in the cylinder axis direction is formed in the lid portion 60b of the recess 60, and the mass member 4 is attached to the bracket 6 in the through hole 60c in the cylinder axis direction of the mass member 4. The end of the other side (the back side in FIG. 11) is inserted. By inserting the mass member 4 into the through hole 60c in this way, the displacement of the mass member 4 in the direction perpendicular to the cylinder axis is limited.

  The mass member 4 is formed so as to extend in the cylinder axis direction and have a gap between the side surface and the bottom surface of the recess 60a, and the inner peripheral surface thereof is substantially the same curved surface as the inner peripheral surface of the cylindrical portion 60. ing. A wall 40 extending outward in the cylinder radial direction is formed at the end of the mass member 4 on one side in the cylinder axis direction (front side in FIG. 11). In the attached state, it is sandwiched by the flange portion 51a of the outer cylinder body 51 and the first flange portion 62 of the bracket 6 from both sides in the cylinder axis direction, so that the displacement of the mass member 4 in the cylinder axis direction is limited. It has become. That is, the wall part 40, the flange part 51, and the 1st flange part 62 comprise the displacement limiting means.

  Then, after the mass member 4 is fitted and accommodated in the recess 60a (see FIGS. 11 and 12), the rubber bush 5 is fitted and fixed to the cylindrical portion 60 (see FIG. 10), so that the bracket 6 It is attached and fixed to. In this way, by pressing the rubber bush 5 into the cylindrical portion 60, the displacement of the mass member 4 in the direction perpendicular to the cylindrical axis is limited.

-Effect-
As described above, according to the present embodiment, the flange portion 51a formed to extend outward in the cylinder radial direction at the end portion on the one side in the cylinder axis direction of the rubber bush 5, and the end on the one side in the cylinder axis direction of the cylinder portion 60. The wall portion 40 formed so as to extend outward in the cylindrical radial direction is sandwiched between the end of the mass member 4 on one side in the cylindrical axial direction and the first flange portion 62 formed so as to extend outward in the cylindrical radial direction. Therefore, the displacement of the mass member 4 in the cylinder axis direction can be limited.

  About the other point, the effect similar to Embodiment 2 is acquired.

(Embodiment 5)
In the present embodiment, the configuration of the engine mount M is different from that of the second embodiment.

  That is, as shown in FIGS. 13 to 15, the rubber bush 7 includes a hollow substantially cylindrical metal inner cylinder 70 and a hollow provided coaxially with the inner cylinder 70 on the outer periphery of the inner cylinder 70. A cylindrical resin outer cylindrical body 71 and a rubber elastic body 72 provided between the cylindrical bodies 70 and 71 and connecting the cylindrical bodies 70 and 71 to each other are provided. The inner cylindrical body 70 has a longer length in the cylinder axial direction than the outer cylindrical body 71, and both ends in the cylindrical axis direction are positioned on the outer side in the cylindrical axis direction from both ends in the cylindrical axis direction of the outer cylindrical body 71. . A bracket 8 having a hollow cylindrical tubular portion 80 into which the rubber bush 7 is press-fitted and fixed is provided on the vibration receiving side by a metal leg portion 81 having a U-shaped cross section that supports the tubular portion 80 from below. While being connected to a vehicle body frame (not shown), the inner cylinder 70 is connected to a power plant on the vibration source side by brackets (not shown) whose both ends in the cylinder axis direction are respectively connected by bolts or the like. It has become so.

  In addition to the inner cylinder 70, the outer cylinder 71, and the rubber elastic body 72, the rubber bush 7 is an intermediate cylinder embedded in an intermediate portion of both the cylinders 70 and 71 inside the rubber elastic body 72, although not shown. And a main fluid chamber and a subfluid chamber formed in the lower portion and the upper portion of the inner cylindrical body 70 inside the rubber elastic body 72, respectively, and an orifice passage communicating these both fluid chambers. . Then, the liquids in the main fluid chamber and the sub-fluid chamber are circulated through the orifice passage so that the low-frequency and large-amplitude vibration acting on the rubber elastic body 72 from the inner cylinder 70 is attenuated. ing.

  A mass member 4 is attached and fixed to the bracket 8 in order to prevent the body frame from resonating. Hereinafter, the mounting structure of the mass member 4 will be described.

  A concave portion 80 a into which the mass member 4 is fitted and received is formed on the lower side of the inner peripheral surface of the cylindrical portion 80. The mass member 4 is formed so as to extend in the cylinder axis direction and substantially match the shape of the recess 80 a, and the inner peripheral surface thereof is substantially the same curved surface as the inner peripheral surface of the cylindrical portion 80. Wall portions 40, 40 extending outward in the cylinder radial direction are formed at both ends of the mass member 4 in the cylinder axis direction, and the mass member 4 is attached to the bracket 8 between the both wall portions 40, 40. In this state, the bottom of the concave portion 80a and the leg portion 81 are interposed, thereby restricting the displacement of the mass member 4 in the cylinder axis direction. That is, both wall portions 40, 40 constitute a displacement limiting means.

  Then, after the mass member 4 is fitted and accommodated in the recess 80a (see FIGS. 14 and 15), the rubber bush 7 is fitted and fixed to the cylindrical portion 80 (see FIG. 13), thereby the bracket 8 It is attached and fixed to. By pressing the rubber bush 7 into the cylindrical portion 80 in this way, the displacement of the mass member 4 in the direction perpendicular to the cylindrical axis is limited.

  As described above, according to the present embodiment, substantially the same effects as those of the first embodiment can be obtained.

  In the present embodiment, the outer cylinder 71 is made of resin, but is not limited thereto, and may be made of metal, for example. However, from the viewpoint of absorbing tolerances, resin is better.

(Other embodiments)
In each of the above embodiments, the present invention is employed in the torque rod R and the engine mount M. However, as long as the rubber bush is fitted into the cylindrical portion of the bracket, the present invention may be employed in other things. For example, you may employ | adopt as a suspension link.

  Moreover, in each said embodiment, although the displacement limiting means is provided, this does not need to be provided. However, it is better to provide from the viewpoint of reliably restricting the displacement of the mass member 4 in the cylinder axis direction.

  Furthermore, in each said embodiment, although the rubber bush is provided with the outer cylinder, it does not need to be provided with this. However, from the viewpoint of reliably restricting the displacement of the mass member 4 in the direction perpendicular to the cylinder axis, it is better to provide it.

  The present invention is not limited to the embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof.

  As described above, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is defined by the claims, and is not limited by the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the mass member mounting structure according to the present invention can be applied to applications that require reducing the number of steps and cost required to mount the mass member to the bracket.

It is a perspective view of the torque rod concerning Embodiment 1 of the present invention. It is a perspective view which shows the state before attaching the mass member and 1st rubber bush to a bracket of the torque rod which concerns on Embodiment 1. FIG. It is a perspective view which shows the state after accommodating the mass member in a bracket of the torque rod which concerns on Embodiment 1, and before attaching a 2nd rubber bush to a bracket. 6 is a perspective view of an engine mount according to Embodiment 2. FIG. It is a perspective view which shows the state before attaching the mass member and the rubber bush to the bracket of the engine mount which concerns on Embodiment 2. FIG. It is a perspective view which shows the state of the engine mount which concerns on Embodiment 2 after accommodating a mass member in a bracket and before attaching a rubber bush to a bracket. FIG. 5 is a view corresponding to FIG. 4 of an engine mount according to a third embodiment. FIG. 6 is a view corresponding to FIG. 5 of an engine mount according to a third embodiment. FIG. 7 is a view corresponding to FIG. 6 of an engine mount according to a third embodiment. FIG. 5 is a view corresponding to FIG. 4 of an engine mount according to a fourth embodiment. FIG. 6 is a view corresponding to FIG. 5 of an engine mount according to a fourth embodiment. FIG. 6 is a view corresponding to FIG. 6 of an engine mount according to a fourth embodiment. FIG. 10 is a perspective view of an engine mount according to a fifth embodiment. It is a perspective view which shows the state before attaching the mass member and the rubber bush to the bracket of the engine mount which concerns on Embodiment 5. It is a perspective view which shows the state before attaching the rubber bush to a bracket of the engine mount which concerns on Embodiment 5. FIG.

R Torque rod M Engine mount 1 Bracket 10 Large tube portion 10a Concave portion 10b Convex portion 2 First rubber bush 4 Mass member 40 Wall portion 5 Rubber bush 51a Flange portion 6 Bracket 60 Tube portion 60a Concavity 60b Lid portion 62 First flange portion 7 Rubber Bush 8 Bracket 80 Tube 80a Recess

Claims (6)

A mass member mounting structure for attaching a mass member to a bracket having a cylindrical portion into which a rubber bush is inserted,
A concave portion for accommodating the mass member is formed on the inner peripheral surface of the cylindrical portion,
The mass member mounting structure, wherein the mass member is attached to the bracket by accommodating the mass member in the concave portion and fitting the rubber bush into the cylindrical portion. In the mass member mounting structure according to claim 1,
A mass member mounting structure, wherein a convex portion is formed on a portion corresponding to the concave portion on the outer peripheral surface of the cylindrical portion. In the mass member mounting structure according to claim 1 or 2,
The mass member mounting structure further comprising displacement limiting means for limiting displacement of the mass member in the cylinder axis direction. In the mass member mounting structure according to claim 3,
The displacement limiting means has a pair of wall portions formed so as to extend outward in the cylinder radial direction at both ends in the cylinder axis direction of the mass member, and the cylinder portion is interposed between the both wall portions. A mass member mounting structure characterized in that the mass member is configured to be configured as follows. In the mass member mounting structure according to claim 3,
The displacement limiting means includes a flange portion formed at one end of the rubber bush in the cylinder axial direction so as to extend outward in the cylinder radial direction, and a lid that covers and covers the end of the concave portion in the cylinder axial direction on the other side The mass member mounting structure is characterized in that the flange portion and the lid portion sandwich the mass member. In the mass member mounting structure according to claim 3,
The displacement limiting means includes a flange portion formed at one end in the cylinder axial direction of the rubber bush so as to extend outward in the cylinder radial direction, and a cylinder radial direction at one end in the cylinder axial direction of the cylinder portion. A flange portion formed so as to extend outward, and a wall portion formed so as to extend outward in the cylinder radial direction at an end portion on one side in the cylinder axis direction of the mass member, and the both flange portions are A mass member mounting structure configured to sandwich the wall portion.

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