JP2020020378A - Vibration isolator with bracket and manufacturing method of vibration isolator with bracket - Google Patents

Abstract

To provide a vibration isolator of a novel structure capable of easily adjusting pre-compression amount of a body rubber elastic body while easily assembling a vibration isolator body to a first bracket.SOLUTION: In a vibration isolator 10, a fixing bolt 100 for fixing a first installation member 14 to a first bracket 20 is threaded to the first installation member 14 in a direction of pre-compression to a body rubber elastic body 18; and the length of the fixing bolt 100 is set so that a bolt head 103 protrudes outwardly away from the first bracket 20 in a state where the first installation member 14 and the first bracket 20 abut on and are overlapped each other; and a spacer 104 inserted, from the lateral side of the fixing bolt 100, into a gap 124 formed between overlapped surfaces of the first installation member 14 and the first bracket 20 separated from the first bracket 20 by making the bolt head 103 abut on the first bracket 20 is clipped and fixed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vibration isolator with a bracket in which a bracket is mounted on a vibration isolator main body, and a method of manufacturing the vibration isolator with a bracket.

  2. Description of the Related Art Conventionally, there has been known an anti-vibration device which is interposed between members constituting a vibration transmission system and which connects or supports vibration-damping members to each other, and is applied to an engine mount of an automobile or the like. . For example, as shown in Japanese Patent Application Laid-Open No. 2013-36581 (Patent Document 1), such a vibration isolator includes a first attachment member (boss member 11) and a second attachment member (outer cylinder member 12). ) Is connected with a main rubber elastic body (anti-vibration base 13), and a first mounting member of the anti-vibration apparatus main body is a first bracket (second anti-vibration device). The power unit is attached to the vehicle body via the bracket 30) and the second attachment member is attached to the power unit via the second bracket (the first bracket 20). ing.

  By the way, in Patent Document 1, the first bracket has a frame-shaped mounting portion, and the vibration isolator main body is attached to the mounting portion of the first bracket from the side. When the vibration isolator is mounted on the vehicle, the load supported by the power unit is applied, and the main rubber elastic body is compressed in a direction in which the first mounting member and the second mounting member approach each other. It is supposed to be. Thereby, a clearance having a size corresponding to the required spring characteristic is formed between the second mounting member and the first bracket. When adjusting the size of the clearance, as shown in FIGS. 19 and 26 of Patent Document 1, the main body rubber elastic body is preliminarily assembled by press-fitting the vibration isolator main body to the first bracket. It is preferable to appropriately adjust the amount of elastic deformation (precompression amount) of the main rubber elastic body before mounting on the vehicle, such as by compressing.

  However, it was difficult to assemble the vibration isolator main body from the side to the first bracket while maintaining the compressed state of the main rubber elastic body, and the first and second mounting members interfered with the first bracket. As a result, the vibration isolator body and the bracket may be damaged. In some cases, it is desired to adjust the pre-compression amount of the main rubber elastic body according to the required spring characteristics, stopper clearance, and the like. Such adjustment can be performed by, for example, changing the size of the first mounting member, the second mounting member, and the frame-shaped mounting portion of the first bracket. And it was difficult to respond.

JP 2013-36581 A

  Here, the present invention has been made in view of the above-described circumstances, and a problem to be solved is that the vibration isolator main body can be easily assembled to the first bracket and the main body rubber elasticity is improved. An object of the present invention is to provide a vibration damping device with a bracket having a novel structure and a method of manufacturing a vibration damping device with a novel bracket, which can easily adjust the amount of precompression of the body.

  According to a first aspect of the present invention, a first bracket is fixed to a first mounting member with respect to a vibration isolator main body in which a first mounting member and a second mounting member are connected by a main body rubber elastic body. In addition, the first bracket presses the first mounting member and the second mounting member in a direction in which a load is applied to approach each other, so that the main rubber elastic body is pre-compressed. In a vibration isolator with a bracket, a fixing bolt for fixing the first mounting member to the first bracket by being screwed and tightened to the first mounting member is used to pre-compress the main body rubber elastic body. The first mounting member is screwed to the first mounting member through the first bracket in the direction of, and the length of the fixing bolt screwed to the first mounting member is equal to the first mounting member. When the member and the first bracket are in contact with each other and The part is set so as to protrude outwardly away from the first bracket, and the head of the fixing bolt abuts on the first bracket so as to be separated from the first bracket. A spacer inserted from the side of the fixing bolt is sandwiched in a gap formed between the overlapping surfaces of the first mounting member and the first bracket, and the first mounting member of the fixing bolt is It is characterized by being fixed by tightening.

  According to the anti-vibration device with a bracket having the structure according to the present aspect, the thickness of the spacer is adjusted to adjust the pre-compression amount of the main rubber elastic body and, consequently, the anti-vibration device main body (second mounting member) when mounted on the vehicle. The amount of clearance between the first bracket and the first bracket can be easily adjusted.

  In addition, since the fixing bolt having a predetermined length is provided, for example, the fixing bolt screwed to the first mounting member is pressed so that the first mounting member is separated from the first bracket. By tightening the fixing bolt after inserting the spacer from above, it becomes possible to mount the spacer when screwing and tightening the fixing bolt.

  The present invention can be applied to various types of vibration isolators. In particular, the second aspect of the present invention, in the vibration damping device with a bracket according to the first aspect, the first mounting member mounted on the vehicle body side via the first bracket, The second mounting member attached to the power unit side via the second bracket is arranged, and a fluid chamber in which a part of a wall portion is formed of the main rubber elastic body and in which an incompressible fluid is sealed is provided. This is an inverted type fluid-filled type vibration damping device in which a fluid flow is generated in the fluid chamber at the time of vibration input.

  A third aspect of the present invention is the vibration damping device according to the first or second aspect, wherein the spacer extends from a through hole into which the fixing bolt is inserted toward an outer periphery and opens at an outer peripheral end. It has an input slit.

  According to the anti-vibration device with a bracket having the structure according to this aspect, for example, the spacer is externally inserted into the fixing bolt from the side through the insertion slit with respect to the fixing bolt screwed to the first mounting member. It is also possible to attach to.

  The specific shape and size of the spacer and the shape and size of the slit for insertion can be appropriately set. In particular, a fourth aspect of the present invention is the vibration damping device with a bracket according to the third aspect, wherein the through hole in the spacer is circular, and the insertion slit is formed in the through hole. From the opening toward the opening at the outer peripheral end.

  A fifth aspect of the present invention is the vibration damping device with a bracket according to the third or fourth aspect, wherein an opening width of the insertion slit in the spacer is larger than an outer diameter of the fixing bolt. A reduced constriction is provided.

  According to the anti-vibration device with a bracket having the structure according to this aspect, the spacer attached to the fixing bolt in the state of being extrapolated to the fixing bolt may come out to the side unintentionally. Is prevented. Even when a narrowed portion having a slit width smaller than the outer diameter of the fixing bolt is provided, for example, by providing a small two-sided width portion on the outer peripheral surface of the fixing bolt, the two-sided width portion and the slit are aligned. Thus, insertion from the side of the spacer can be realized.

  According to a sixth aspect of the present invention, in the vibration damping device with a bracket according to any one of the first to fifth aspects, the spacer is partially located in a circumferential direction at an outer peripheral end and located on an outer peripheral side. An outer peripheral projection is provided to protrude.

  According to the anti-vibration device with a bracket having a structure according to this aspect, the outer peripheral projection of the spacer is used, for example, to grasp and handle the spacer, position the spacer, and make the spacer easily visible from outside. And the handling of the spacer can be facilitated.

  According to a seventh aspect of the present invention, there is provided a vibration isolator main body including a first mounting member and a second mounting member connected by a main rubber elastic body, and a frame provided on a first bracket. And the first mounting member is fixed to the first mounting member by a fixing bolt screwed into a screw hole of the first mounting member through an insertion hole of the first bracket. In the method for manufacturing a vibration isolator with a bracket to be fixed to a bracket, after assembling the vibration isolator main body from the side to the frame-shaped mounting portion provided on the first bracket, the first mounting member A pushing member is inserted into the screw hole through the insertion hole of the first bracket, and the bottom surface of the screw hole is pushed toward the body rubber elastic body side by the pushing member, thereby compressing the body rubber elastic body in the axial direction. To the pre-compressed state. Thereafter, a spacer is inserted from the side into a gap between the first mounting member and the first bracket separated by the pushing of the pushing member and between the first mounting member and the first bracket. Is maintained.

  According to the method of manufacturing the vibration isolator with the bracket according to this aspect, the precompression can be exerted by assembling the vibration isolator main body to the first bracket and then pushing in the pushing member to assemble the spacer. Therefore, it is possible to avoid a difficult press-fitting operation of the vibration isolator main body into the first mounting member and a risk of damage to the member accompanying the press-in operation.

  According to an eighth aspect of the present invention, in the method for manufacturing a vibration isolator with a bracket according to the seventh aspect, the fixing bolt screwed into a screw hole of the first mounting member as the pushing member, After inserting a spacer from the side into a gap between the first mounting member and the first bracket separated by the pressing of the fixing bolt and in the axial direction, the fixing bolt is tightened to fix the first mounting member. The first bracket and the first bracket are screwed to each other with the spacer interposed therebetween.

  According to the method of manufacturing the vibration isolator with the bracket according to this aspect, by using the fixing bolt as the pressing member, it is not necessary to subsequently remove the pressing member inserted into the screw hole of the first mounting member in the manufacturing process. In addition, the manufacturing process can be simplified.

  A ninth aspect of the present invention is the manufacturing method of the vibration isolator with the bracket according to the seventh aspect, wherein the pressing member is different from the fixing bolt screwed into a screw hole of the first mounting member. After inserting a spacer from the side into the axial gap between the first mounting member and the first bracket separated by the pushing of the pushing pin, the pushing pin is inserted into the screw hole. Then, the fixing bolt is screwed into the screw hole through the insertion hole of the first bracket and tightened, so that the first mounting member and the first bracket sandwich the spacer. The screws are fixed to each other.

  According to the method for manufacturing the vibration isolator with the bracket according to this aspect, it is avoided that an external force for separating the first mounting member and the first bracket is applied to the fixing bolt in the manufacturing process, and Unnecessary damage can be prevented. As the push pin, a rod or the like that can be inserted and removed without being screwed into the screw hole can be adopted, whereby the push pin can be quickly inserted into and removed from the screw hole, and damage to the screw hole can be prevented. .

  A tenth aspect of the present invention is the manufacturing method of the vibration isolator with the bracket according to the ninth aspect, wherein an outer diameter of the pushing pin is smaller than an outer diameter of the fixing bolt, The insertion slit provided in the spacer is provided with a constricted portion that is larger than the outer diameter of the pushing pin and smaller than the outer diameter of the fixing bolt.

  According to the method of manufacturing the vibration isolator with the bracket according to this aspect, it is possible to prevent the screw hole from being damaged when the push pin is inserted or removed. Further, in the manufacturing process, the spacer can be inserted from the side by passing the push pin inserted in the screw hole through the slit. Even if the fixing bolt is loosened, the fixing bolt is prevented from dropping through the narrowed portion by preventing the fixing bolt from passing through the slit of the spacer.

  According to the anti-vibration device with a bracket having the structure according to the present invention, for example, the fixing bolt is pressed by pressing the fixing bolt and inserting the spacer from the side in a state where the first mounting member is separated from the first bracket. By tightening, it becomes possible to easily attach the spacer when screwing and tightening the fixing bolt.

  Further, according to the method of the present invention, it is possible to exert pre-compression by assembling the spacer by pressing the first mounting member via the pushing member after assembling the vibration isolator main body to the first bracket. .

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the vibration isolator with a bracket as 1st embodiment of this invention in the screwing state of the fixing bolt. The left view of the vibration isolator with a bracket shown in FIG. III-III sectional drawing in FIG. IV-IV sectional drawing in FIG. The top view of the spacer which comprises the vibration isolator with a bracket shown in FIG. FIG. 6 is an exemplary front view of the spacer illustrated in FIG. 5; FIG. 4 is a longitudinal sectional view showing the anti-vibration device with a bracket shown in FIG. 1 before a fixing bolt is screwed, and is a view corresponding to FIG. 3. The top view of the spacer which comprises the vibration isolator with a bracket as 2nd embodiment of this invention. FIG. 9 is a front view of the spacer illustrated in FIG. 8.

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

  First, FIGS. 1 to 4 show an engine mount 10 for a vehicle as a first embodiment of a vibration isolator with a bracket according to the present invention. The engine mount 10 includes a vibration isolator main body 12. The vibration isolator main body 12 has a structure in which a first mounting member 14 and a second mounting member 16 are elastically connected by a main body rubber elastic body 18. Have. Then, as shown in FIG. 3, the first mounting member 14 is mounted to the vehicle body 22 which is a member to be damped via the first bracket 20, and the second mounting member 16 is The power unit 26 is mounted on the power unit 26 as a vibration source via the bracket 24 of the vehicle body, so that the power unit 26 is supported by the vehicle body 22 in a vibration-proof manner. 3 and 4 show a state in which the shared supporting load of the power unit 26 is not applied. In addition, in the following description, the up-down direction and the axial direction are the up-down direction in the vehicle mounted state and the up-down direction in FIGS. Furthermore, the left-right direction refers to the left-right direction in FIG. 1, and the front-rear direction refers to the left-right direction in FIG. However, the left-right direction and the front-back direction do not always match the left-right direction and the front-back direction when the vehicle is mounted.

  More specifically, the first mounting member 14 has a substantially circular block shape extending as a whole in the vertical direction, and is a highly rigid member made of metal, hard synthetic resin, or the like. At the lower end of the first mounting member 14, a flange portion 28 projecting outward is integrally formed, and on the lower surface, a screw hole 30 extending upward on the central axis and opening downward is provided. Is formed. A female screw is formed on the inner peripheral surface of the screw hole 30.

  On the other hand, the second mounting member 16 has a thin-walled, large-diameter, generally cylindrical shape extending in the vertical direction as a whole, and is formed of a material such as a metal or a hard synthetic resin similarly to the first mounting member 14. ing. A step portion 32 is provided at an intermediate portion in the axial direction of the second mounting member 16, and an upper portion of the second mounting member 16 is a small-diameter cylindrical portion 34, and a lower portion of the second mounting member 16 is a large-diameter cylindrical portion 36. ing.

  The second mounting member 16 is concentrically disposed above the first mounting member 14, and the first mounting member 14 and the second mounting member 16 are elastically connected by the main rubber elastic body 18. ing. The main rubber elastic body 18 has a generally frusto-conical shape in the opposite direction as a whole, and a small-diameter end (lower end) is vulcanized and bonded to the first mounting member 14 and a large-diameter side. The outer peripheral surface of the end (upper end) is vulcanized and bonded to the large-diameter cylindrical portion 36 of the second mounting member 16. The main rubber elastic body 18 of the present embodiment is formed as an integrally vulcanized molded product including the first mounting member 14 and the second mounting member 16. From the large diameter end of the main rubber elastic body 18, an integrally formed thin cylindrical seal rubber layer 38 protrudes upward, and the inner circumference of the small diameter cylindrical portion 34 of the second mounting member 16 is formed. The surface is substantially entirely covered with a seal rubber layer 38.

  Further, a large-diameter recess 40 is formed in the main rubber elastic body 18. The large-diameter recess 40 is a recess having a substantially mortar shape, and is open at the large-diameter end surface (upper end surface) of the main rubber elastic body 18.

  The flexible film 42 is attached to the second attachment member 16. The flexible film 42 has a thin, generally disk shape, and has a slack by bending in the vertical direction. Further, the outer peripheral end of the flexible film 42 is fixed to the fixing member 44. The fixing member 44 is a tubular or ring-shaped member, and the flexible film 42 is fixed so as to close the center hole thereof. In the present embodiment, the flexible film 42 is formed as an integrally vulcanized molded product including the fixing member 44. Then, after the integrally vulcanized molded product of the flexible film 42 is inserted and arranged in the upper opening of the small-diameter cylindrical portion 34 of the second mounting member 16, the small-diameter cylindrical portion 34 is subjected to diameter reduction processing. The flexible film 42 is disposed so as to close the upper opening of the second mounting member 16 in a liquid-tight manner.

  In this manner, the flexible film 42 is disposed to face the main rubber elastic body 18 at a distance above, so that the main rubber elastic body 18 and the flexible film 42 face each other in the axial direction. A fluid chamber 46 which is sealed with respect to the external space and in which an incompressible fluid is sealed is formed. That is, a part of the wall of the fluid chamber 46 is constituted by the main rubber elastic body 18. The incompressible fluid sealed in the fluid chamber 46 is not particularly limited, and for example, any of water, alkylene glycol, polyalkylene glycol, silicone oil, or a mixture thereof is preferably used. You. Furthermore, a low-viscosity fluid of 0.1 Pa · s or less is desirable in order to efficiently obtain an anti-vibration effect based on the fluid flow action described below.

  A partition member 48 is provided in the fluid chamber 46. The partition member 48 is a hard member formed of a synthetic resin, metal, or the like, has a disk shape as a whole, and has a thicker outer peripheral portion than an inner peripheral portion. A circumferential groove 50 extending in the circumferential direction is formed in the thick outer peripheral portion so as to open to the outer peripheral surface.

  The partition member 48 having such a structure is disposed in the fluid chamber 46. That is, the partition member 48 is inserted into the small-diameter cylindrical portion 34 of the second mounting member 16, and the outer peripheral surface of the partition member 48 is supported by being fitted to the inner peripheral surface of the second mounting member 16. Thus, it extends in a direction substantially perpendicular to the axis.

  The fluid chamber 46 is vertically divided into two parts by the provision of the partition member 48 with the partition member 48 interposed therebetween. Thus, below the partition member 48, a pressure receiving chamber 52 is formed in which a part of the wall portion is formed of the main rubber elastic body 18 and in which an internal pressure fluctuation is caused when a vibration is input. On the other hand, above the partition member 48, an equilibrium chamber 54 in which a part of the wall is formed of the flexible film 42 and whose volume change is easily allowed is formed. In other words, by covering the opening of the large-diameter recess 40 with the partition member 48, the pressure receiving chamber 52 is formed between the main rubber elastic body 18 and the partition member 48, and the small-diameter cylindrical portion 34 An equilibrium chamber 54 is formed between the flexible film 42 and the partition member 48 by covering the lower opening with the partition member 48. An incompressible fluid is sealed in the pressure receiving chamber 52 and the equilibrium chamber 54.

  Further, the outer peripheral surface of the partition member 48 is brought into close contact with the second mounting member 16 via the seal rubber layer 38, so that the outer peripheral opening of the peripheral groove 50 is covered by the second mounting member 16 in a fluid-tight manner, A tunnel-like flow path extending in the circumferential direction is formed. One end of the tunnel-shaped flow path is communicated with the pressure receiving chamber 52 through a communication hole (not shown), and the other end is communicated with the equilibrium chamber 54 through a communication hole (not shown). An orifice passage 56 communicating with the chamber 54 is formed. In the orifice passage 56, the resonance frequency (tuning frequency) of the flowing fluid is set by adjusting the ratio (A / L) of the passage cross-sectional area (A) to the passage length (L).

  The first bracket 20 and the second bracket 24 are attached to the vibration isolator main body 12 having such a structure.

  The first bracket 20 is a highly rigid member formed of metal or the like, and includes a connecting plate 58 fixed to the first mounting member 14, a portal member 60 fixed to the connecting plate 58, It has a pair of leg members 62, 62 fixed to both ends of the portal member 60.

  The connection plate 58 is a substantially plate-shaped member extending in the left-right direction. For example, by bending a metal base plate by press working or the like, the central portion in the longitudinal direction is located lower than both side portions. That is, a concave accommodation recess 64 is formed at the longitudinal center portion of the connection plate 58, and contact portions 66, 66 extending outward in the left-right direction from the opening of the accommodation recess 64 are formed at both side portions. Is formed. A through hole 68 is formed in the center of the bottom of the accommodation recess 64 so as to penetrate in the vertical direction.

  Further, the gate-shaped member 60 is a substantially inverted U-shaped member that opens downward and is formed by, for example, bending a metal plate extending in the left-right direction by pressing or the like, and opposes in the left-right direction. A pair of side walls 70, 70, and a top wall 72, which connects the upper end portions of the side walls 70, 70 to each other and extends in the left-right direction, are provided. In addition, one side in the width direction of the portal member 60 (one side in the front-rear direction and the rear side, rightward in FIG. 2) projects outward over substantially the entire length in the length direction of the portal member 60. Reinforcing ribs 74 are provided. In addition, a connecting portion between the side wall portion 70 (right side in FIG. 4) and the top wall portion 72 of the gate-shaped member 60, that is, one corner of the substantially U-shaped gate-shaped member 60 is A mounting piece 76 protruding in the other direction in the width direction (to the front in FIG. 2, leftward) is fixed by welding or the like. A bolt insertion hole (not shown) penetrating in the thickness direction is provided in a protruding tip portion (front end portion) of the mounting piece 76.

  At the lower end opening of the portal member 60, the connecting plate 58 is fixed by welding or the like. In other words, the projecting distal ends (lower ends) of the side walls 70, 70 of the gate-shaped member 60 and the longitudinal ends of the connecting plate 58 are fixed to each other, so that the lower-end openings of the gate-shaped member 60 are connected. It is closed by the plate 58. As a result, the first bracket 20 has a housing area 78 as a mounting portion surrounded by the connection plate 58, the side walls 70, 70, and the top wall 72 in a substantially rectangular frame shape. The region 78 is open on both sides in the front-rear direction.

  A substantially plate-like leg member 62 extending downward is fixed to the protruding distal end portion (lower end portion) of each of the side wall portions 70 of the gate-shaped member 60, that is, a fixing position with the connecting plate 58 on the side wall portion 70 by welding or the like. Have been. These leg members 62 extend downward and are bent outward in the left-right direction at their lower ends, and are provided with bolt insertion holes (not shown) penetrating in the thickness direction at the bent portions. Reinforcing ribs 80 protruding outward are continuously formed on both sides in the width direction (both sides in the front-rear direction) and lower ends of these leg members 62.

  On the other hand, the second bracket 24 is also a high-rigidity member formed of metal or the like similarly to the first bracket 20, and includes an annular mounting portion 82 mounted on the second mounting member 16, And a mounting portion 84 that protrudes laterally from a part of the circumference of 82.

  The mounting portion 82 is formed in an annular shape that is continuous in the circumferential direction and that opens in the vertical direction, and has an inner diameter approximately equal to the outer diameter of the large-diameter cylindrical portion 36 of the second mounting member 16. . A substantially annular stepped surface 86 extending in the direction perpendicular to the axis is provided on the inner peripheral surface of the mounting portion 82, and the inner diameter above the stepped surface 86 is slightly larger than the inner diameter below. Diameter. Further, the vertical dimension of the mounting portion 82 is different in the circumferential direction, and the vertical dimension of the front portion of the mounting portion 82 is substantially equal to the vertical dimension of the large-diameter cylindrical portion 36 of the second mounting member 16. At the same time, contact portions 88 projecting upward are provided on both left and right sides of the mounting portion 82. Thus, the vertical dimension of the mounting portion 82 at the position where the contact portion 88 is formed is made larger than the overall vertical dimension of the second mounting member 16. Further, a rear portion of the mounting portion 82 is formed integrally with the mounting portion 84, and the vertical dimension thereof is larger than the vertical dimension of the large-diameter cylindrical portion 36 of the second mounting member 16. Furthermore, lateral protruding portions 89 protruding outward in the left-right direction are provided at lower portions on both left and right sides of the mounting portion 82.

  A cushion rubber 90 is fixed to the outer peripheral surface of the mounting portion 82. That is, a substantially annular lower buffer rubber 92 is fixed to the lower surface of the mounting portion 82, and upper buffer rubbers 94, 94 are fixed above the contact portions 88, 88 in the mounting portion 82. . The lower cushioning rubber 92 and the upper cushioning rubber 94 are connected by side cushioning rubbers 96, 96 fixed to the outer peripheral surfaces on both left and right sides of the mounting portion 82. In short, the cushioning rubber 90 fixed to the outer peripheral surface of the mounting portion 82 is constituted by the lower cushioning rubber 92, the upper cushioning rubber 94, and the side cushioning rubber 96. In particular, in the present embodiment, a textured projection is formed on the lower surface of the lower buffer rubber 92.

  Further, the mounting portion 84 is formed integrally with a rear portion of the mounting portion 82, and extends in the left-right direction as shown in FIG. The mounting portion 84 is provided with a plurality of bolt insertion holes (not shown) extending in the up-down direction, and is provided with positioning pins 98 projecting downward.

  The first bracket 20 and the second bracket 24 having such a structure are attached to the vibration isolator main body 12. That is, the second mounting member 16 of the vibration isolator main body 12 is pressed into the mounting portion 82 of the second bracket 24 from above, and the second mounting member of the second bracket 24 and the vibration isolator main body 12 are 16 are fixed to each other. When the vibration isolator main body 12 is press-fitted into the mounting portion 82 of the second bracket 24, the lower end of the second mounting member 16 (the lower end of the large-diameter cylindrical portion 36) is pressed against the inner peripheral surface of the mounting portion 82. Is positioned by abutting the step surface 86 provided on the upper surface.

  Then, the assembled body of the vibration isolator main body 12 and the second bracket 24 is assembled from the rear to the accommodation area 78 of the first bracket 20 (see FIG. 7 described later). Thereby, the vibration isolator main body 12 is positioned in the accommodation area 78, and the mounting portion 84 of the second bracket 24 is positioned behind the first bracket 20.

  Here, when the assembly of the vibration isolator main body 12 and the second bracket 24 is inserted into the housing area 78, the insertion of the assembly of the vibration isolator main body 12 and the second bracket 24 into the housing area 78 is performed. Since the vertical dimension a (see FIG. 7) of the portion accommodated in the housing area 78 is substantially the same (a ≒ b) or smaller (a <b) as the vertical dimension b (see FIG. 7) of the accommodation area 78. The assembly of the vibration isolator main body 12 and the second bracket 24 can be mounted in the housing area 78 without requiring a difficult press-fitting. That is, the main rubber elastic body 18 in the vibration isolator main body 12 can be inserted in the vertical direction without being manually compressed to the extent that it is difficult.

  Then, the assembled body of the vibration isolator main body 12 and the second bracket 24 is housed in the housing area 78, and the through hole 68 of the connection plate 58 in the first bracket 20 and the screw hole in the first mounting member 14 are provided. In a state where the first mounting member 14 and the first mounting member 14 in the vibration isolator main body 12 are aligned with each other, the fixing bolt 100 is inserted into the through hole 68 and screwed into the female screw in the screw hole 30, and further tightened. The one bracket 20 is mutually bolted.

  Here, in the present embodiment, as shown in FIG. 3, the length of the shaft portion (bolt length) of the fixing bolt 100 is c, and the fixing bolt 100 is screwed into the screw hole 30. A required specified screwing amount (a specified screwing depth dimension, which may be specified as, for example, 5 mm or more, or 1/3 or more of the bolt length c, or twice or more of the bolt outer diameter, etc.) is d, and will be described later. Assuming that the thickness of the spacer 104 is e and the thickness of the connecting plate 58 is f, a fixing bolt 100 that satisfies the condition of c> d + e + f is used.

  Specifically, for example, a state in which the first mounting member 14 and the connecting plate 58 of the first bracket 20 are in contact with each other and are directly superimposed (that is, the first mounting member 14 If the fixing bolt 100 is screwed into the screw hole 30 of the first mounting member 14 with at least the specified screwing amount d from the outer surface (lower surface) of the connection plate 58, The length c of the fixing bolt 100 is set so that it can protrude outward (downward) in length. In particular, the projecting length of the fixing bolt 100 from the connecting plate 58 is set such that the bolt head 103 of the fixing bolt 100 can be separated from the connecting plate 58 by a dimension larger than the thickness dimension e of the spacer 104. Is set.

  As a result, as described later in paragraph [0085], in a state where the vibration isolator main body 12 is housed in the housing area 78 of the first bracket 20, the specified amount of screwing d into the first mounting member 14 is performed. The first mounting member 14 is separated from the first bracket 20 using the screwed fixing bolt 100, that is, by applying an external force in the axial direction to the bolt head 103 of the fixing bolt 100 and connected to the bolt head 103. By pushing up until the plate 58 comes into contact, a gap 124 (described later) having an axial dimension larger than the thickness dimension e of the spacer 104 is formed between the first mounting member 14 and the connection plate 58. For this reason, it is also possible to apply pre-compression to the main rubber elastic body 18 and insert the spacer 104 from the side.

  5 and 6, between the first mounting member 14 and the connection plate 58 of the first bracket 20 in the state where the vibration isolator main body 12 is housed in the housing area 78 in this manner. A spacer 104 is provided.

  Although the outer peripheral shape of the spacer 104 is not limited, in the present embodiment, the spacer 104 is formed to have an outer peripheral shape substantially corresponding to the lower end surface of the first mounting member 14, and specifically, has a substantially rounded corner as a whole. It has a rectangular plate shape and is a highly rigid member such as a metal or a hard synthetic resin. The outer dimensions of the spacer 104 are set so as to be mountable on the bottom surface of the housing recess 64 in the connection plate 58 of the first bracket 20. In the central portion of the spacer 104, the diameter D (see FIG. 5) is slightly larger than the outer diameter g (see FIG. 3) of the shaft portion of the fixing bolt 100, and has a circular shape penetrating in the vertical direction. Are formed, and the periphery of the through-hole 106 is a peripheral plate-shaped portion 108 having a certain thickness dimension and extending slightly less than one circumference in the circumferential direction to the outer peripheral side.

  Here, a notch is provided in a part (upper part in FIG. 5) on the periphery of the peripheral plate-shaped part 108, and a slit-shaped space extending from the through hole 106 is formed at the outer peripheral end of the spacer 104. It has an opening 110. That is, the insertion slit 112 is formed in the spacer 104 so as to extend radially outward (outer peripheral side) from the through hole 106 and open at the opening 110 at the outer peripheral end.

  In the present embodiment, the opening width h (see FIG. 5) of the opening portion 110 of the slit 112 is made larger than the diameter D of the through hole 106, and the slit 112 is provided between the through hole 106 and the opening portion 110. And a tapered portion 114 whose opening width gradually increases. In the present embodiment, the inner peripheral surface of the slit 112 cuts and opens the through-hole 106 with a peripheral length shorter than a half circumference, so that the inner peripheral surface of the through-hole 106 extends with a peripheral length longer than a half circumference. It has been.

  In particular, in the present embodiment, the opening width i (see FIG. 5) of the slit 112 is larger than the outer diameter dimension j of the push pin 122 described later (j <i), and the outer width of the fixing bolt 100 at the shaft portion. A constricted portion 118 smaller than the diameter g (i <g) is provided. The constriction portion 118 has a constriction dimension (i) smaller than the inner diameter (diameter) D of the through hole, with the chord length of the through hole 106 at the connection portion between the through hole 106 and the slit 112.

  On the other hand, the spacer 104 of the present embodiment is provided with an outer peripheral projection 120 that partially protrudes to the outer peripheral side at the outer peripheral end at the radial position opposite to the slit 112. The size and shape of the outer peripheral protrusion 120 are not particularly limited. For example, it is preferable that the outer protrusion 120 has a size and shape that can be gripped by a finger or a jig when a spacer 104 described later is inserted.

  Then, in the vibration isolator body 12 in which the first bracket 20 and the second bracket 24 are assembled, a gap 124 (described later) between the connection plate 58 and the first mounting member 14 in the first bracket 20 is formed. The engine mount according to the present embodiment, in which the spacer 104 is inserted from the side and is tightened and fixed by the fixing bolt 100 to apply a pre-compression to the rubber elastic body 18 in the axial direction. 10 are configured.

  Hereinafter, a specific example of the method of manufacturing the engine mount 10 of the present embodiment will be described in detail with reference to FIG. 7 and the like. However, the method of manufacturing the engine mount 10 is not limited to the method described below. Absent.

  First, the vibration isolator main body 12, the first bracket 20, the second bracket 24, and the spacer 104 are separately manufactured and prepared. The manufacturing method of the vibration isolator main body 12 is not limited at all, and a conventionally known manufacturing method may be adopted. For example, an integrally vulcanized molded product of the main rubber elastic body 18, the partition member 48, and the flexibility By assembling the membrane 42 with the integrally vulcanized molded article in an incompressible fluid, the incompressible fluid can be sealed in the fluid chamber 46.

  Then, the second mounting member 16 of the vibration isolator main body 12 is pressed into the mounting portion 82 of the second bracket 24 from above and fixed.

  Thereafter, as shown in FIG. 7, the assembled body of the vibration isolator main body 12 and the second bracket 24 is inserted into the housing area 78 of the first bracket 20 from the side (rear) and assembled. At this time, the vertical dimension a of the portion of the assembled body of the vibration isolator main body 12 and the second bracket 24 that is accommodated in the accommodation area 78 is substantially the same as or smaller than the vertical dimension b of the accommodation area 78. Therefore, the main rubber elastic body 18 is inserted without being significantly compressed in the up-down direction, that is, without being pressed into the first bracket 20 with a large press-in allowance. Has become. In FIG. 7, the upper cushioning rubber 94, which is the upper end of the assembly of the vibration isolator main body 12 and the second bracket 24, and the top wall portion 72 of the first bracket 20 are in contact with each other. One attachment member 14 and the connection plate 58 of the first bracket 20 are shown separated from each other.

  Next, in a state where the screw hole 30 in the first mounting member 14 and the through hole 68 in the first bracket 20 are aligned with each other, the screw hole 30 is passed through the through hole 68 in FIG. A push pin 122 as a push member indicated by a chain line is inserted upward in the axial direction. The push pin 122 is, for example, a rod-shaped member made of a rigid material such as a metal. In this embodiment, the outer diameter dimension j (see FIG. 7) of the push pin 122 is equal to the outer diameter dimension of the fixing bolt 100. g and the inner diameter of the screw hole 30 of the first mounting member 14.

  Then, while the second bracket 24 is fixedly supported, the upper bottom surface 102 of the screw hole 30 is pushed up by the push pin 122 inserted into the screw hole 30 toward the main rubber elastic body 18, that is, upward in the axial direction. The main rubber elastic body 18 is compressed in the vertical direction to be in a pre-compressed state. Therefore, in the present embodiment, the vertical direction that is the substantially elastic main axis of the main rubber elastic body 18 is the direction of the pre-compression of the main rubber elastic body 18. The amount of pre-compression of the main rubber elastic body 18 depends on the shared support load of the power unit 26 when the engine mount 10 is mounted on the vehicle and the elasticity of the main rubber elastic body 18 caused by the applied shared load. Depending on the amount of deformation or the like, it can be appropriately set in consideration of the axial stopper clearance. However, the pushing amount of the pushing pin 122 may be larger than the designed pre-compression amount set for the main rubber elastic body 18, and the elastic restoring deformation of the main rubber elastic body 18 accompanying the removal of the pushing pin 122 may be reduced. May be taken into account.

  Further, by pushing the push pin 122 upward, the first mounting member 14 and the first mounting member 14 are located between the opposing surfaces of the first bracket 20 and the connecting plate 58 of the first bracket 20 (between the overlapping surfaces). A vertical gap 124 is formed by separating the connection plate 58 from each other. Then, the spacer 104 is inserted into the gap 124 from the side while the pushing state of the pushing pin 122 upward is maintained. The insertion of the spacer 104 from the side is performed by inserting the push pin 122 through the slit 112 of the spacer 104 until the push pin 122 is positioned in the through hole 106 of the slit 112. In particular, in the present embodiment, the push pin 122 can be easily guided into the through hole 106 by the tapered portion 114 of the slit 112.

  Further, after inserting the spacer 104, the push pin 122 is removed from the screw hole 30. Thereby, the main rubber elastic body 18 is elastically restored and deformed, and the spacer 104 is sandwiched between the first mounting member 14 and the connection plate 58 of the first bracket 20 in the vertical direction, and is caused by frictional force or the like. They are positioned and arranged. That is, since the elastic restoring force of the main rubber elastic body 18 is received by the spacer 104, the pre-compressed state of the main rubber elastic body 18 is maintained even after the push-in pin 122 is removed. In other words, the vibration isolator main body 12 is assembled into the housing area 78 of the first bracket 20 with the spacer 104 interposed therebetween, so that the connection plate 58 and the top wall 72 of the first bracket 20 cause the main body rubber The elastic body 18 is pressed through the spacer 104 in a load acting direction that causes the first mounting member 14 and the second mounting member 16 to approach each other, so that pre-compression is exerted.

  Then, in a state where the pre-compressed state of the main rubber elastic body 18 is maintained, the fixing bolt 100 is inserted upward from below through the through hole 68 of the first bracket 20 and the through hole 106 of the spacer 104, and It is screwed into the screw hole 30 of one mounting member 14 at a depth exceeding the design screwing length. Thus, the first mounting member 14 and the first bracket 20 are screwed (bolted) to each other with the spacer 104 interposed therebetween.

  By such a procedure, the engine mount 10 of the present embodiment can be manufactured. In the engine mount 10, a mounting bolt is inserted through a bolt insertion hole (not shown) provided in both leg members 62, 62 of the first bracket 20 and the mounting piece 76, and is screwed to the vehicle body 22. The power unit 26 is resiliently mounted on the vehicle body 22 via the engine mount 10 by inserting a mounting bolt into a bolt insertion hole (not shown) provided in the mounting portion 84 of the second bracket 24 and screwing it to the power unit 26. Will be supported.

  When the engine mount 10 is mounted on the vehicle in this manner, the shared support load of the power unit 26 is applied to the main rubber elastic body 18 and the second mounting member 16 is pulled downward, so that the main rubber elastic body 18 is pulled down. The body 18 is compressed and deformed in the axial direction. Here, since the main rubber elastic body 18 is pre-compressed in the axial direction between the first mounting member 14 and the second mounting member 16, an input load in the rebound direction is applied to the main rubber elastic body 18. When applied, the main rubber elastic body 18 can be prevented from being subjected to tensile deformation. As a result, a predetermined amount of stopper clearance in the rebound direction is formed between the upper cushioning rubbers 94 and 94 and the top wall portion 72 for satisfying the durability of the main rubber elastic body 18, and the lower cushioning rubber is formed. A stopper clearance in the bounding direction of a predetermined size is also formed between the rubber 92 and the contact portions 66, 66.

  Further, by mounting the engine mount 10 on the vehicle in this manner, when vibration is input from the power unit 26, the incompressible fluid flows through the orifice passage 56 that connects the pressure receiving chamber 52 and the equilibrium chamber 54. Fluid flow is generated, and a vibration damping effect based on the fluid flow action is also exerted. That is, in the present embodiment, the engine mount 10 is a fluid-filled type vibration damping device, and the first mounting member 14 mounted on the vehicle body 22 is replaced with the second mounting member 16 mounted on the power unit 26. It is an inverted type vibration isolator located below.

  Here, when a large load is input in the bounce direction (the direction in which the first mounting member 14 and the second mounting member 16 approach each other), the mounting portion 82 of the second bracket 24 moves downward. The first bracket 20 comes into contact with the contact portions 66, 66 of the connection plate 58 via the buffer rubber 92. Thus, the relative displacement between the first mounting member 14 and the second mounting member 16 is limited in a buffer manner. In the present embodiment, the mounting portion 82 and the contact portion 66, A bound stopper 126 is configured to include the 66 and the lower cushioning rubber 92.

  Similarly, when a large load is input in the rebound direction (the direction in which the first mounting member 14 and the second mounting member 16 are separated from each other), the contact portions 88, 88 of the second bracket 24 are input. Are in contact with the top wall 72 of the first bracket 20 via the upper cushioning rubbers 94, 94. Thus, in this embodiment, the rebound stopper 128 includes the contact portions 88, 88, the top wall portion 72, and the upper cushioning rubbers 94, 94. When a large load is input in the left-right direction, the side protruding portions 89, 89 of the second bracket 24 are connected to the side wall portions 70, 70 of the first bracket 20 via the side cushion rubbers 96, 96. To come into contact with. Thus, in the present embodiment, the left and right stoppers 130, 130 are configured to include the side protruding portions 89, 89, the side wall portions 70, 70, and the side cushioning rubbers 96, 96.

  In the engine mount 10 of the present embodiment having the above-described structure, the vibration isolator main body 12 can be assembled into the housing area 78 of the first bracket 20 without requiring a difficult press-fitting, and at the same time, a predetermined The stopper clearance can be set. Further, damage to members such as the first and second mounting members 14 and 16 and the first bracket 20 due to the press-fitting of the vibration isolator main body 12 into the bracket can be avoided. Further, by adjusting the thickness dimension of the spacer 104, the pre-compression amount of the main rubber elastic body 18 or the stopper clearance can be easily adjusted.

  In particular, in the present embodiment, the use of the push pins 122 that can be linearly inserted into and removed from the screw holes 30 can prevent the screw holes 30 from being damaged during the pre-compression due to the assembly of the spacer 104.

  Further, in the present embodiment, since the narrowed portion 118 whose opening width is smaller than the outer diameter dimension g of the fixing bolt 100 is provided in the slit 112 of the spacer 104, the spacer is fixed after the spacer 104 is mounted. Even when the bolt 100 is loosened or the spacer 104 is displaced, the fixing bolt 100 and the constricted portion 118 abut against each other, so that the spacer 104 can be prevented from dropping from the engine mount 10.

  Further, in the present embodiment, since the outer peripheral end portion of the spacer 104 is partially provided on the outer periphery, the outer peripheral protrusion portion 120 protruding to the outer peripheral side is provided. By gripping, the spacer 104 can be easily inserted between the first mounting member 14 and the connection plate 58 of the first bracket 20. Further, since the outer peripheral protrusion 120 can be easily confirmed, it contributes to prevention of forgetting to assemble the spacer 104 and the like.

  Next, FIGS. 8 and 9 show a spacer 132 used in an engine mount as a second embodiment of the vibration damping device with a bracket according to the present invention. The spacer 132 of the present embodiment is not provided with the constricted portion (118) of the above embodiment. That is, the slit 134 of the spacer 132 in the present embodiment linearly extends with an opening width substantially equal to the diameter D of the through hole 106 at the center portion, and then has an opening width toward the opening 110 at the tapered portion 114. It is getting bigger. In the engine mount of the present embodiment in which the spacer 132 has such a shape, the same effect as in the above embodiment can be exhibited.

  As described above, the embodiments of the present invention have been described in detail, but the present invention is not to be construed as being limited by the specific description in the embodiments.

  For example, in the above-described embodiment, a push pin 122 is employed as a push member separate from the fixing bolt 100, and the main rubber elastic body 18 is compressed by the push pin 122 to insert the spacer 104 from the side. However, the fixing bolt 100 can be used as a pushing member. Specifically, in the above-described embodiment, after the vibration isolator main body 12 is inserted into the housing area 78 of the first bracket 20, the screw hole 30 in the first mounting member 14 and the connection plate 58 in the first bracket 20 are connected. In a state where the through holes 68 are aligned with each other, the fixing bolt 100 is screwed into the screw hole 30 of the first mounting member 14 and screwed to a depth equal to or longer than the designed screwing length. In this state, the first mounting member is pressed upward by applying an external force directed upward to the bolt head 103 of the fixing bolt 100 until the bolt head 103 comes into contact with the connection plate 58 of the first bracket 20 so that the main body rubber is pressed. The elastic body 18 may be deformed in the pre-compression direction. In such a case, as described above, the vertical dimension c in the shaft portion of the fixing bolt is determined by the sum of the specified screwing amount d, the thickness e of the spacer 104 to be mounted, and the thickness f of the connection plate 58. Is larger (c> d + e + f), it is possible to separate the first mounting member 14 from the connection plate 58 of the first bracket 20 and leave a gap 124 for inserting the spacer 104 from the side. Will be possible.

  If the spacer 104 is mounted by using the fixing bolt 100 as a pushing member in this way, it is not only necessary to separately prepare a pushing member, but also, when assembling the spacer 104, the rubber elastic body 18 is used. It is not necessary to remove the fixing bolt 100, which is a pushing member used for compressively deforming in the axial direction, after assembling the spacer 104, and only by further tightening the fixing bolt 100 thereafter, the first bolt through the spacer 104 is used. Can be fixed to the first bracket 20 of the mounting member 14.

  Furthermore, the specific shape of the spacer is not particularly limited. For example, the outer peripheral projection projecting outward is not essential. Instead of or in addition to the outer peripheral protrusion, a guide rail for guiding insertion of the spacer may be provided on, for example, the first bracket or the first mounting member.

  Further, in the spacer 104 of the first embodiment, a narrowed portion 118 having a reduced opening width is formed by providing a portion that protrudes inward in the facing direction from the wall on both sides opposed to each other with the slit 112 interposed therebetween. However, a constricted portion having a reduced opening width may be formed by providing a portion protruding from one opposing wall portion toward the other wall portion. Furthermore, in order to prevent the spacer 104 from coming out, instead of or in addition to such a constricted portion, an uneven engagement portion may be provided between the overlapping surface of the spacer 104 and the first mounting member 14. It is possible. Note that the insertion slit does not need to be tapered and need not extend linearly.

  Furthermore, specific structures of the vibration isolator main body, the first bracket, the second bracket, and the like are not limited at all. That is, in the above-described embodiment, the engine mount 10 is an inverted type fluid-filled vibration damping device. However, the bracket-mounted vibration damping device according to the present invention is a so-called solid vibration damping device that is not a fluid-filled vibration damping device. It may be an upright type anti-vibration device in which the first attachment member attached to the power unit is located above the second attachment member attached to the vehicle body. Also, none of the bound stopper 126, the rebound stopper 128, and the lateral stoppers 130, 130 in the above embodiment are essential. Furthermore, the first bracket only needs to have a mounting portion to which the vibration isolator main body is mounted, but the mounting portion does not need to be the substantially rectangular housing area 78 as in the above-described embodiment.

  In the above-described embodiment, the anti-vibration device with a bracket according to the present invention is shown as an engine mount 10 for a vehicle. However, the anti-vibration device with a bracket according to the present invention is a member mount or a body mount for an automobile. For example, the present invention may be applied to vibration damping devices other than automobiles.

10: engine mount (anti-vibration device with bracket), 12: anti-vibration device body, 14: first mounting member, 16: second mounting member, 18: rubber elastic body, 20: first bracket, 22 : Vehicle body, 24: second bracket, 26: power unit, 46: fluid chamber, 78: housing area (mounting portion), 100: fixing bolt (push member), 102: upper bottom surface (bottom surface), 103: bolt head Part, 104, 132: spacer, 106: through hole, 110: opening, 112, 134: insertion slit, 118: constriction, 120: outer peripheral projection, 122: push pin (push member), 124: Gap

Claims (10)

A first bracket is fixed to the first mounting member with respect to the vibration isolator main body in which the first mounting member and the second mounting member are connected by the main rubber elastic body, and the first bracket is fixed to the first mounting member. In a vibration isolator with a bracket, wherein a bracket presses the first mounting member and the second mounting member in a direction of a load acting close to each other to pre-compress the main body rubber elastic body,
The fixing bolt for fixing the first mounting member to the first bracket by being screwed and tightened to the first mounting member, the first mounting member is fixed in the direction of pre-compression to the main rubber elastic body. While being screwed to the first mounting member through the bracket,
When the length of the fixing bolt screwed to the first mounting member is such that the first mounting member and the first bracket are in contact with each other and overlap with each other, the bolt head is attached to the first bracket. Is set to protrude outward away from the
A gap formed between the overlapping surfaces of the first mounting member and the first bracket separated from the first bracket by bringing the head of the fixing bolt into contact with the first bracket. A spacer inserted from a side of the fixing bolt, and the fixing bolt is fixed to the first mounting member by tightening the fixing bolt.   Above the first attachment member attached to the vehicle body side via the first bracket, the second attachment member attached to the power unit side via the second bracket is arranged, and the wall A part of the portion is formed of the main rubber elastic body to form a fluid chamber in which an incompressible fluid is sealed, and an inverted-type fluid-filled type in which fluid flow is generated in the fluid chamber when vibration is input. The anti-vibration device with a bracket according to claim 1, wherein the anti-vibration device is a vibration device.   The anti-vibration device with a bracket according to claim 1 or 2, wherein the spacer has an insertion slit extending from a through hole through which the fixing bolt is inserted toward an outer periphery and opening at an outer peripheral end.   4. The spacer according to claim 3, wherein the through hole in the spacer has a circular shape, and the insertion slit has an opening width that gradually increases from the through hole toward the opening at the outer peripheral end. Anti-vibration device with bracket.   The anti-vibration device with a bracket according to claim 3 or 4, wherein the insertion slit in the spacer is provided with a constricted portion having an opening width smaller than an outer diameter of the fixing bolt.   The anti-vibration device with a bracket according to any one of claims 1 to 5, wherein the spacer is provided with an outer peripheral projection that is partially located in an outer peripheral end in a circumferential direction and protrudes toward the outer periphery. The vibration isolator main body including the first mounting member and the second mounting member connected by the main body rubber elastic body is laterally moved with respect to the frame-shaped mounting portion provided on the first bracket. And a bracket for fixing the first mounting member to the first bracket by a fixing bolt screwed into a screw hole of the first mounting member through an insertion hole of the first bracket. In the manufacturing method of
After assembling the anti-vibration device body from the side to the frame-shaped mounting portion provided in the first bracket,
Inserting a pushing member into the screw hole of the first mounting member through the insertion hole of the first bracket, and pushing the bottom surface of the screw hole into the rubber elastic body side of the main body with the pushing member. The elastic body is compressed in the axial direction to a pre-compressed state,
A spacer is inserted from the side into a gap between the first mounting member and the first bracket separated by the pushing of the pushing member and in the axial direction, and the pre-compressed state of the main rubber elastic body is maintained by the spacer. A method of manufacturing a vibration isolator with a bracket, comprising:   Using the fixing bolt screwed into the screw hole of the first mounting member as the pushing member, between the axial direction between the first mounting member and the first bracket separated by pushing the fixing bolt. The bracket with the bracket according to claim 7, wherein after the spacer is inserted into the gap from the side, the fixing bolt is tightened to screw the first mounting member and the first bracket to each other with the spacer interposed therebetween. A method for manufacturing a vibration device.   As the pushing member, a pushing pin different from the fixing bolt screwed into the screw hole of the first attaching member is used, and the first attaching member and the first bracket separated by pushing the pushing pin are separated. After inserting the spacer from the side into the gap between the screw and the axial direction, the push pin is removed from the screw hole, and then the fixing bolt is screwed into the screw hole through the insertion hole of the first bracket. The method for manufacturing a vibration isolator with a bracket according to claim 7, wherein the first mounting member and the first bracket are screwed to each other with the spacer interposed therebetween by tightening together.   The outer diameter of the pushing pin is smaller than the outer diameter of the fixing bolt, and the insertion slit provided in the spacer has a larger diameter than the outer diameter of the pushing pin, and The method for manufacturing a vibration isolator with a bracket according to claim 9, wherein a constricted portion smaller than the outer diameter of the bracket is provided.

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