JP2023039593A - Cylindrical vibration control device with a plurality of kinds of brackets and its manufacturing method - Google Patents

Abstract

To provide a cylindrical vibration control device with a plurality of kinds of new brackets and its manufacturing method, capable of efficiently manufacturing each cylindrical vibration control device by achieving positioning of a center shaft of each rubber mount to each mounting hole and positioning in a circumferential direction, while adopting various brackets according to difference in vehicle types and mounting positions in manufacturing each cylindrical vibration control device.SOLUTION: In cylindrical vibration control devices 10, 90 with a plurality of kinds of brackets, brackets 12, 92 and a rubber mount main body 16 have non-rotationally symmetrical structures around a shaft, and in each of the cylindrical vibration control devices 10, 90 with the plurality of kinds of brackets, uneven positioning portions 20, 96 around the shaft to a jig 100 for press-fitting assembly disposed on the brackets 12, 92 and an engagement positioning portion 132 around the shaft to respect to the jig 100 for press-fitting assembly disposed on the rubber mount main body 16 are configured to have a relatively same positional relationship around the shaft.SELECTED DRAWING: Figure 2

Description

The present invention relates to a plurality of types of bracket-equipped tubular vibration-damping devices used for, for example, engine mounts and motor mounts of automobiles, and methods of manufacturing the same.

2. Description of the Related Art Conventionally, as a vibration isolator applied to an automobile engine mount or a motor mount, for example, a bracket-equipped tubular vibration isolator is known in which a tubular rubber mount body is press-fitted into a mounting hole of the bracket. It is

By the way, various types of tubular vibration-damping devices with brackets are provided and employed according to various conditions such as required performance and mounting conditions. For example, different types of bracket-equipped tubular vibration-damping devices are used in different types of automobiles. A tubular vibration isolator with a bracket is used as the engine mount.

Utility Model Registration No. 2599196

In such a cylindrical anti-vibration device, when the rubber mount body is press-fitted into the attachment hole of the bracket, the anti-vibration device is designed to exhibit the desired anti-vibration effect against the input load from the assumed direction. It was necessary to align the central axes of the rubber mount bodies with the rubber mount bodies positioned in the circumferential direction and press-fit them into the mounting holes of the bracket supported by the tool.

However, conventionally, the shape and size of the bracket are different depending on the type of vehicle and the mounting position of the cylindrical anti-vibration device. A jig for aligning and press-fitting the respective central axes in a state of being positioned in the circumferential direction is required for each cylindrical vibration isolator. As a result, when manufacturing a plurality of types of tubular vibration-damping devices with brackets, a jig corresponding to each tubular vibration-damping device is required, leading to a complicated manufacturing process and an increase in cost.

Against the background of such circumstances, the present invention has been made. A new plurality of devices that can efficiently manufacture each cylindrical vibration isolator by achieving alignment of the central axis of each rubber mount body with respect to each mounting hole and positioning in the circumferential direction while employing a bracket. The object of the present invention is to provide a cylindrical vibration isolator with a bracket and a manufacturing method thereof.

Hereinafter, preferred embodiments for understanding the present invention will be described. can be recognized and employed as independently as possible, and can also be employed in combination with any of the components described in other aspects as appropriate. Accordingly, the present invention can be implemented in various alternatives without being limited to the embodiments described below.

A first aspect is a bracket-equipped tubular vibration isolator in which a tubular rubber mount body is press-fitted into an attachment hole of each bracket, and a plurality of types of the brackets are different from each other, Both the bracket and the rubber mount main body have a non-rotationally symmetrical structure about the axis, and in any of the plurality of types of bracket-equipped tubular vibration-damping devices, a press-fit assembly provided on the bracket The concave and convex positioning portion around the axis for the jig and the engagement positioning portion around the axis for the press-fitting jig provided on the rubber mount body are relatively in the same positional relationship around the axis. It is what is done.

According to this aspect, each bracket has an uneven positioning portion that is positioned around the axis with respect to the jig for press-fitting assembly, and each rubber mount main body is attached to the jig for press-fitting assembly. It has an engagement positioning portion that is positioned about the axis. As a result, in any of the plurality of types of bracket-equipped tubular vibration-damping devices, each rubber mount main body is positioned in the circumferential direction with respect to the mounting hole of each bracket via a common jig for press-fitting assembly. be able to. In addition, since the concave-convex positioning portion and the engagement positioning portion have the same relative positional relationship around the axis, any of the plurality of types of bracket-equipped tubular vibration-damping devices can be used in common for press-fit assembly. Each bracket and each rubber mount main body can be properly aligned with each other in the circumferential direction via the jig. Therefore, unlike the conventional structure, when constructing each cylindrical vibration isolator, there is no need to use a separate jig for press-fitting. It becomes possible to efficiently manufacture the bracket-equipped tubular vibration isolator.

A second aspect is the cylindrical vibration isolator with a bracket according to the first aspect, wherein the unevenness positioning portion provided on the bracket is located in the mounting hole in the press-fitting direction of the rubber mount main body. It is a through-hole or a pin-like projection extending in the axial direction.

According to this aspect, the bracket has a through-hole or a pin-shaped projection as the concave-convex positioning portion. By passing through the holes, the bracket and the jig for press-fit assembly can be aligned with each other. In this aspect, it is possible to compactly realize the concave-convex positioning portion that can correspond to various types of bracket-equipped tubular vibration-damping devices with excellent space efficiency. However, it becomes easier to set the concave-convex positioning portion to the corresponding position. Further, by inserting pin-like projections provided on either one of the bracket and the jig into the through-holes, it is possible to easily realize an effective concave-convex positioning portion even if the thickness and shape of the bracket are different.

A third aspect is the plurality of types of bracket-equipped tubular vibration isolator according to the first or second aspect, wherein the engagement positioning portion provided on the rubber mount main body is aligned in the press-fit direction in the rubber mount main body. The non-circular outer peripheral surface shape of the inner shaft member protruding in the axial direction of the mounting hole and/or the hollow hole provided in the rubber mount body.

According to this aspect, for example, a jig for press-fit assembly is provided with a concave portion corresponding to the inner shaft member of the rubber mount main body and/or a convex portion corresponding to the hollow hole of the rubber mount main body. The rubber mount main body and the jig for press-fit assembly are positioned in a state in which they cannot rotate around the axis (circumferential direction) by fitting the member with the concave portion and/or the hollow hole with the convex portion. can be matched. In this aspect, it is possible to provide the engagement positioning portion while avoiding adverse effects on the spring characteristics of the rubber mount body.

A fourth aspect is a method of manufacturing a tubular vibration isolator with a bracket, in which a tubular rubber mount body is press-fitted into an attachment hole of each bracket, and the brackets are different from each other to provide a plurality of types. Both the bracket and the rubber mount main body have a non-rotationally symmetrical structure around the axis, while each of the brackets constituting the plurality of types of tubular vibration-damping devices with brackets has a concave-convex positioning portion. The uneven positioning portion of each bracket is positioned in the circumferential direction of the mounting hole with respect to a common bracket positioning portion provided on a common jig for press-fitting assembly, and the bracket is mounted on the mounting hole. Each of the rubber mount main bodies, which are set to a jig for press-fitting assembly and constitute the plurality of types of tubular vibration-damping devices with brackets, is provided with an engagement positioning portion, and is commonly used for press-fitting assembly. The engagement positioning portion of each rubber mount body is positioned in the circumferential direction of the rubber mount body with respect to a common mount positioning portion provided on a jig for the press-fit assembly. and holds the concave/convex positioning portion of the bracket and the engagement positioning portion of the rubber mount main body in the same relative positional relation around the axis with respect to the jig for press-fitting assembly. This is achieved by press-fitting the rubber mount body into the bracket in a closed state.

According to this aspect, in any one of the tubular vibration-damping devices, the bracket and the rubber mount main body are set in the same jig for press-fitting and assembly in a state in which they are properly positioned relative to each other in the circumferential direction. In this state, each cylindrical vibration isolator can be manufactured by press-fitting the rubber mount main body into the mounting hole of the bracket. As a result, when manufacturing multiple types of tubular vibration-damping devices with brackets, it is possible to adopt a common jig for press-fitting assembly, thereby improving press-fitting workability and reducing costs. A vibration isolator can be manufactured efficiently. In particular, in this aspect, even when brackets having different shapes and sizes are adopted, each bracket has a corresponding common position under each proper setting state to the jig, and there is no problem in the structure of the bracket. Since it is possible to find a position where the unevenness does not occur and to set the concave-convex positioning portion there, there is no need to fundamentally change the design of various bracket-equipped tubular vibration-damping devices.

A fifth aspect is the method for manufacturing a plurality of types of bracket-equipped tubular vibration-damping devices according to the fourth aspect, wherein the jig for press-fit assembly includes a mount for supporting the rubber mount main body in the press-fit direction. A support portion is provided, and the support surface of the rubber mount main body in the mount support portion is movable in the press-fitting direction together with the mount positioning portion.

According to this aspect, since the supporting surface of the mount support portion of the jig for press-fitting assembly is movable in the direction of press-fitting the bracket into the attachment hole of the rubber mount main body, the jig for press-fitting assembly is movable. The rubber mount main body can be press-fitted into the attachment hole of the bracket while maintaining the positioning state of the rubber mount main body in the circumferential direction with respect to the bracket.

A sixth aspect is the method for manufacturing a plurality of types of tubular vibration-damping devices with brackets according to the fourth or fifth aspect, wherein the plurality of It is intended to manufacture a variety of tubular vibration isolators with brackets.

According to this aspect, it is possible to efficiently manufacture a plurality of types of tubular vibration-damping devices with brackets described in any one of the first to third aspects.

According to the present invention and the method of the present invention, each rubber mount body can be more efficiently press-fitted into the attachment hole of each bracket in any of the plurality of types of tubular vibration-damping devices with brackets. .

FIG. 2 is a perspective view showing a first bracket-equipped cylindrical vibration-damping device, which is one of a plurality of types of bracket-equipped cylindrical vibration-damping devices as one embodiment of the present invention. FIG. 2 is a bottom view of the first bracket-equipped tubular vibration isolator shown in FIG. 1 ; FIG. 2 is an exploded perspective view of the first bracket-equipped cylindrical vibration isolator shown in FIG. Longitudinal cross-sectional view showing an enlarged IV-IV cross section in FIG. FIG. 2 is an enlarged plan view showing a rubber mount main body that constitutes the first bracket-equipped cylindrical vibration isolator shown in FIG. 1 ; FIG. 2 is a perspective view showing a second tubular vibration-damping device with a bracket, which is another one of a plurality of types of tubular vibration-damping devices with a bracket as one embodiment of the present invention. Bottom view of the second bracket-equipped tubular vibration isolator shown in FIG. FIG. 7 is an exploded perspective view of the second bracket-equipped cylindrical vibration isolator shown in FIG. FIG. 2 is a perspective view showing a jig for press-fit assembly used when manufacturing multiple types of tubular vibration-damping devices with brackets according to the method of the present invention; FIG. 10 is a perspective view showing a state in which the bracket and the rubber mount body constituting the second cylindrical vibration isolator with bracket shown in FIG. 6 are set in the jig for press-fit assembly shown in FIG. 9; FIG. 11 is a plan view of a jig for press-fit assembly in which the bracket and rubber mount main body shown in FIG. 10 are set; FIG. 12 is a vertical cross-sectional view of the jig for press fitting and assembling, showing the process for press fitting and assembling the rubber mount main body into the mounting hole of the bracket; a) is a cross section, and (b) is a diagram showing a state after the rubber mount main body is press-fitted into the attachment hole of the bracket; FIG. 10 is a perspective view showing a state in which a bracket and a rubber mount body constituting the first cylindrical vibration isolator with bracket shown in FIG. 1 are set in the jig for press-fit assembly shown in FIG. 9;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 4 show a first cylindrical vibration isolator with bracket, which is one of a plurality of types of cylindrical vibration isolator with bracket as one embodiment of the present invention, for an electric vehicle. A motor mount 10 with a bracket is shown. The first bracket-equipped motor mount 10 has a structure in which a cylindrical rubber mount body 16 is press-fitted into the mounting hole 14 of the first bracket 12 . The orientation of the first motor mount 10 with bracket when mounted on a vehicle is not limited, but in the following description, the up-down direction is the up-down direction in FIG. A direction and a left-right direction are directions perpendicular to the plane of FIG.

More specifically, as shown in FIG. 3, the first bracket 12 extends in a direction perpendicular to the left-right direction as a whole, and is made of a hard member such as metal or fiber-reinforced synthetic resin. is. A mounting hole 14 is formed in the front portion of the first bracket 12 , and the mounting hole 14 extends in the left-right direction through the first bracket 12 . The mounting hole 14 is a circular through hole and has a certain length dimension. That is, the peripheral wall portion 18 of the mounting hole 14 has a certain length dimension in the axial direction (horizontal direction) of the mounting hole 14, and the inner diameter dimension of the peripheral wall portion 18 is the axial direction (horizontal direction) of the mounting hole 14. is approximately constant. In the first bracket 12, the portion other than the mounting hole 14 has a structure suitable for mounting to a member on the power unit side such as a motor. Holes are appropriately provided. In this manner, the first bracket 12 is provided with mounting holes 14 biased to one side (forward), or with lightening holes, bolt insertion holes, or the like. The hole 14 has a non-rotationally symmetrical structure around the central axis L1.

In addition to lightening holes and bolt insertion holes, portions of the first bracket 12 other than the mounting holes 14 are provided with holes for mounting the first bracket 12 to a jig 100 for press-fit assembly described later. A through-hole 20 is provided as a concave-convex positioning portion for positioning around the central axis L1 of 14 . The through-hole 20 extends in the left-right direction, which is the direction in which the rubber mount body 16 is press-fitted into the mounting hole 14, and is slightly larger than the outer diameter of the pin-shaped projection 106 in the jig 100 for press-fitting assembly, which will be described later. It has an inner diameter dimension. In the first bracket 12, the mounting holes 14 and the through holes 20 are circular. In particular, in the first bracket 12, the central axis L2 of the through hole 20 is located behind the central axis L1 of the mounting hole 14 and separated by a predetermined distance A (see FIG. 2).

5, the rubber mount main body 16 has a structure in which an inner shaft member 22 and an outer cylindrical member 24 are elastically connected by a main rubber elastic body 26. As shown in FIG.

The inner shaft member 22 is made of a metal such as an aluminum alloy and has a rod shape as a whole. The inner shaft member 22 extends in the left-right direction, and both end portions in the left-right direction are formed into substantially rectangular block-shaped fastening portions 28, 28. Each fastening portion 28 is formed with a bolt hole 30 penetrating therethrough in the vertical direction. ing. Each fastening portion 28 has a shape in which one of the four corners (bottom left in FIG. 2) is notched when viewed in the axial direction (horizontal direction) shown in FIG. It has a non-circular outer peripheral shape. The fastening portions 28 , 28 of the inner shaft member 22 protrude on both sides of the mounting hole 14 in the axial direction (left-right direction) when the rubber mount main body 16 is press-fitted into the mounting hole 14 .

In addition, the inner shaft member 22 has an intermediate portion in the left-right direction that has a substantially elliptical cross-section, and the outer peripheral surface of the intermediate portion in the left-right direction with the substantially elliptical cross-section is located closer to the outer peripheral surface of the fastening portion 28 that is both end portions in the left-right direction. are also located on the outer periphery. That is, the outer peripheral surface of the inner shaft member 22 has an axially intermediate portion that protrudes further to the outer peripheral side than the axially both end portions, and the axially intermediate portion having a substantially oval cross section protrudes outwardly from the axially both end portions. A fitting protrusion 32 protrudes to the side and is fitted with an external fitting protrusion 76 to be described later. In particular, in the present embodiment, the fitting projection 32 is provided with a projection 34 that projects in the direction orthogonal to the axis (to the right in FIG. 4) and extends over substantially the entire length in the axial direction.

On the other hand, the fitting protrusion 32 in the axially intermediate portion of the inner shaft member 22 is provided with an inner recess 36 that opens on the side opposite to the side on which the protrusion 34 is provided (left side in FIG. 4). there is The inner recess 36 has a certain degree of opening dimension (vertical dimension in FIG. 4) and depth dimension (horizontal dimension in FIG. 4). An inner recess 36 is formed with an opening dimension that does not reach .

The outer tubular member 24 is made of metal or the like, and has a substantially cylindrical shape extending in the left-right direction. The outer cylindrical member 24 can be inserted with the inner shaft member 22 and has a substantially constant inner diameter.

A fitting protrusion 32, which is an axially intermediate portion of the inner shaft member 22, is inserted through the outer tubular member 24, and a main rubber elastic body is provided between the fitting protrusion 32 of the inner shaft member 22 and the outer tubular member 24 in the radial direction. 26 are arranged. The main rubber elastic body 26 has a pair of rubber arms 38, 38 that interconnect the inner shaft member 22 and the outer cylindrical member 24, as shown in FIG. The rubber arms 38, 38 have their inner peripheral ends vulcanized and bonded to the fitting protrusion 32 of the inner shaft member 22, and their outer peripheral ends vulcanized and bonded to the inner peripheral surface of the outer tubular member 24. . The main rubber elastic body 26 having the rubber arms 38 , 38 covers the surface of the fitting protrusion 32 of the inner shaft member 22 at the central portion in the left-right direction. Both left and right ends at 32 are exposed from the main rubber elastic body 26 having rubber arms 38 , 38 . Further, the fitting protrusion 32 of the inner shaft member 22 and the outer cylindrical member 24 protrude outward in the left-right direction from the main rubber elastic body 26 at the left-right end.

In the radially intermediate portion of the main rubber elastic body 26, on the opposite side (the left side in FIG. 4) of the fitting protrusion 32 on which the protrusion 34 is provided, in the axial direction (lateral direction) A first hollow 40 is provided therethrough. The first hollow hole 40 extends in the circumferential direction for a length less than half the circumference. In addition, in the radially intermediate portion of the main rubber elastic body 26, the side of the fitting protrusion 32 where the protrusion 34 is provided (right side in FIG. 4) is provided with a second thread that penetrates in the axial direction (left-right direction). A pick hole 42 is provided. The second hollow hole 42 extends in the circumferential direction for a length less than half the circumference. A pair of rubber arms 38 , 38 are arranged between the circumferential ends of the first hollow hole 40 and the second hollow hole 42 . In this embodiment, as will be described later, the engagement positioning portion 132 for positioning the rubber mount main body 16 around the mount central axis M with respect to the jig 100 for press-fit assembly is an inner shaft member having a non-circular shape. 22 and a first hollow 40 in the main rubber elastic body 26 . The mount central axis M of the rubber mount main body 16 can be grasped as the central axis of the outer tubular member 24 .

The main rubber elastic body 26 is provided with a first outer stopper rubber 44 forming a wall portion on the side opposite to the inner shaft member 22 in the first hollow hole 40. It adheres to the inner peripheral surface of the cylindrical member 24 . The first outer stopper rubber 44 has a first abutment projection 46 protruding toward the inner shaft member 22 at a central portion in the circumferential direction. 40 protrudes toward the opening of the inner recess 36 of the inner shaft member 22 . The first contact protrusion 46 has a substantially rectangular block shape, and a second contact protrusion further protruding toward the inner shaft member 22 is provided at the central portion in the left-right direction of the projecting tip surface of the first contact protrusion 46 . A buffer projection 48 is provided.

The main rubber elastic body 26 has a second outer stopper rubber 50 forming a wall portion on the side opposite to the inner shaft member 22 in the second hollow hole 42 , and the second outer stopper rubber 50 It adheres to the inner peripheral surface of the cylindrical member 24 . The second outer stopper rubber 50 has a second abutment projection 52 protruding toward the inner shaft member 22 at the central portion in the circumferential direction. 42 protrudes toward the inner shaft member 22 . The second contact protrusion 52 has a substantially rectangular block shape, and a second contact protrusion 52 further protruding toward the inner shaft member 22 is provided at the central portion in the left-right direction of the protruding tip surface of the second contact protrusion 52 . Two damping projections 54 are provided.

A first inner stopper rubber 56 is fixed to the fitting projection 32 of the inner shaft member 22 on the side of the first hollow 40 (left side in FIG. 4). The first inner stopper rubber 56 is placed in the inner recess 36 in a filled state and protrudes from the opening of the inner recess 36 to the outer peripheral side. The first inner stopper rubber 56 and the first outer stopper rubber 44 face each other while being separated from each other in the horizontal direction in FIG. The first inner stopper rubber 56 is continuous with the circumferential end of each rubber arm 38 and provided integrally with the main rubber elastic body 26 .

A second inner stopper rubber 58 is fixed to the fitting protrusion 32 of the inner shaft member 22 on the side of the second hollow 42 (right side in FIG. 4). The second inner stopper rubber 58 covers the surface of the projecting portion 34 of the fitting projection 32, and faces the second outer stopper rubber 50 while being spaced apart in the left-right direction in FIG. . The second inner stopper rubber 58 is continuous with the circumferential end of each rubber arm 38 opposite to the first inner stopper rubber 56 , and is provided integrally with the main rubber elastic body 26 . there is

As described above, the inner shaft member 22 has different shapes in the circumferential direction around the mount central axis M of the rubber mount main body 16, and includes the shapes of the first hollow 40 and the second hollow 42. Since the shape of the main rubber elastic body 26 is different in the circumferential direction around the central axis M of the mount, the rubber mount main body 16 has a non-rotationally symmetrical structure around the central axis M of the mount.

In such a rubber mount main body 16, when a shocking large-amplitude vibration is input between the inner shaft member 22 and the outer cylindrical member 24 in the direction perpendicular to the axis (horizontal direction in FIG. A first axis-perpendicular stopper mechanism 60 and a second axis-perpendicular stopper mechanism 62 limit the amount of relative displacement with respect to the cylindrical member 24 in the axis-perpendicular direction.

That is, when the inner shaft member 22 is largely displaced to the left in FIG. A first outer stopper rubber 44 and a first inner stopper rubber 56 including 46 and a first cushioning projection 48 are in contact with each other. As a result, the first axis-perpendicular stopper mechanism 60 is formed, and the amount of relative displacement between the inner shaft member 22 and the outer cylindrical member 24 in the axis-perpendicular direction is limited. Further, when the inner shaft member 22 is largely displaced to the right in FIG. A second outer stopper rubber 50 and a second inner stopper rubber 58 including the contact protrusion 52 and the second cushioning protrusion 54 are in contact with each other. As a result, a second axis-perpendicular stopper mechanism 62 is formed, and the amount of relative displacement between the inner shaft member 22 and the outer cylindrical member 24 in the axis-perpendicular direction is limited.

The first motor mount with bracket 10 has a stopper member 64 attached to the first bracket 12 and the rubber mount main body 16 . As also shown in FIG. 3, the stopper member 64 has a groove shape as a whole, and has a pair of side portions 66, 66 arranged on both sides in the axial direction (lateral direction) of the mounting hole 14 of the first bracket 12. and an outer portion 68 arranged on the outer peripheral side of the first bracket 12 and connecting the pair of side portions 66, 66 to each other. The stopper member 64 is preferably formed of an elastic material such as rubber at least at a portion constituting an axial stopper mechanism 86 to be described later. It is made of elastic material.

The stopper member 64 has a pair of side portions 66 , 66 that are generally rectangular as a whole. Mounting holes 70 are provided for mounting to 22 . The outer shape of the mounting hole 70 when viewed in the left-right direction corresponds to the outer shape of the fitting protrusion 32 of the inner shaft member 22 when viewed in the left-right direction. , and a protruding portion 74 protruding in a mountain shape corresponding to the protruding portion 34 at a part of the outer peripheral edge of the oval portion 72 . In the pair of side portions 66 , 66 , a substantially annular outer fitting protrusion 76 that continuously protrudes inward in the opposite direction over substantially the entire circumference in the circumferential direction is integral with the inner peripheral edge of each mounting hole 70 . is provided in An uneven portion 78 is provided between the mounting hole 70 and the outer portion 68 in the pair of side portions 66 , 66 . By providing the concave-convex portion 78, it is possible to improve the cushioning function of the axial stopper mechanism 86, which will be described later, and to reduce the hammering sound.

Around the mounting hole 70 in the side portion 66 is provided a projecting portion 80 that widens in the outer peripheral direction (to the left in FIG. 4). The overhanging portion 80 has a substantially semicircular shape when viewed in the left-right direction and bulges leftward in FIG. ing. In this embodiment, both of the pair of side portions 66, 66 are provided with the projecting portion 80, but for example, only one of the side portions 66 may be provided with the projecting portion 80. The exit portion 80 may not be provided.

The first bracket 12, the rubber mount main body 16, and the stopper member 64 configured as described above are installed after the rubber mount main body 16 is press-fitted into the mounting hole 14 of the first bracket 12. The stopper member 64 is positioned on the outer peripheral side of the first bracket 12 so that the pair of side portions 66 , 66 are positioned on both axial sides of the mounting hole 14 and the outer portion 68 of the stopper member 64 is positioned on the outer peripheral side of the first bracket 12 . It is attached to one bracket 12 and the rubber mount main body 16 . A detailed description of the method of press-fitting the rubber mount body 16 into the mounting hole 14 will be given later. First, the method of assembling the stopper member 64 to the first bracket 12 and the rubber mount body 16 will be described.

A pair of side portions 66 , 66 of the stopper member 64 are attached from the outside in the left-right direction to the inner shaft member 22 projecting to both sides in the left-right direction in the rubber mount body 16 assembled to the first bracket 12 . That is, the fastening portions 28, 28 at both left and right ends of the inner shaft member 22 are inserted into the mounting holes 70, 70 in the pair of side portions 66, 66, and the fitting protrusions of the inner shaft member 22 are fitted. 32 protrudes inward in the opposing direction (inward in the axial direction of the inner shaft member 22) from the pair of side portions 66, 66 with respect to the exposed portions that are not covered with the main rubber elastic body 26 at both left and right ends of 32. The stopper member 64 is assembled to the first bracket 12 and the rubber mount main body 16 by fitting the outer fitting protrusion 76 in a substantially close contact state. In the present embodiment, since substantially the entire stopper member 64 is made of an elastic material such as rubber, the pair of side portions 66, 66 that face each other are pushed apart so that the distance between them increases. By doing so, it becomes possible to insert both left and right end portions (fastening portions 28 ) of the inner shaft member 22 into the mounting holes 70 in the side portions 66 .

In the present embodiment, the fitting protrusion 32 has a generally oval shape as a whole, and the mounting hole 70 through which the fitting protrusion 32 is inserted is an oval having a shape corresponding to that of the fitting protrusion 32 . It has a portion 72 . Therefore, when the outer fitting protrusion 76 is fitted onto the fitting protrusion 32, the fitting protrusion 32 and the elliptical portion 72, which are formed in a non-circular shape, cause the stopper member 64 to be a rubber mount. It is circumferentially positioned with respect to the body 16 . Therefore, in the present embodiment, the fitting protrusion 32 and the oblong portion 72 of the mounting hole 70, which are non-circular, constitute a positioning mechanism 82 for positioning the rubber mount main body 16 and the stopper member 64 in the circumferential direction. It is In particular, in this embodiment, the projecting portion 34 is provided on a part of the outer peripheral surface of the fitting projection 32, and the mounting hole 70 is provided with a projecting portion 74 corresponding to the projecting portion 34. Therefore, the positioning mechanism 82 in the circumferential direction between the rubber mount main body 16 and the stopper member 64 is also constituted by these components, and a higher degree of positioning in the circumferential direction is achieved.

The positioning mechanism 82 assembles the stopper member 64 to the first bracket 12 and the rubber mount main body 16 in a state in which they are positioned in the circumferential direction. The outer portion 68 of the stopper member 64 is located between the side portions 66, 66 facing each other in the direction, and the outer portion 68 of the stopper member 64 extends a part of the circumference of the peripheral wall portion 18 of the mounting hole 14 from the outer peripheral side in a predetermined direction. covering.

In the first bracketed motor mount 10 constructed in this manner, for example, the first bracket 12 is attached to a power unit side member such as a motor (not shown) and is inserted through the bolt hole 30 of the inner shaft member 22 . The inner shaft member 22 is attached to a mating member 84 on the vehicle body side indicated by a two-dot chain line in FIG. In the first bracketed motor mount 10 , the mating member 84 fixed to the inner shaft member 22 extends leftward in FIG. As a result, a part of the circumference of the peripheral wall portion 18 of the mounting hole 14 is a mating member that is fixed to the inner shaft member 22 with each part of the side portion 66 and the projecting portion 80 of the stopper member 64 interposed therebetween. It faces 84 in the left-right direction.

In the first bracketed motor mount 10 constructed as described above, a shocking large-amplitude vibration is input between the inner shaft member 22 and the outer cylindrical member 24 in the axial direction (vertical direction in FIG. 4). Then, the amount of axial relative displacement between the inner shaft member 22 and the outer tubular member 24 is limited by the axial stopper mechanism 86 .

That is, when the inner shaft member 22 is largely displaced in the vertical direction in FIG. contact via the side portion 66 and the projecting portion 80 of the stopper member 64 . As a result, an axial stopper mechanism 86 is formed, and the amount of relative displacement between the inner shaft member 22 and the outer tubular member 24 in the axial direction is limited. Accordingly, in the first bracketed motor mount 10 , an axial stop mechanism 86 is formed including the side portion 66 and the overhang portion 80 of the stop member 64 .

Next, FIGS. 6 to 8 show a second bracket-equipped cylindrical vibration isolator, which is another one of the plurality of types of bracket-equipped cylindrical vibration isolator of the present embodiment, for an electric vehicle. Two bracketed motor mounts 90 are shown. The second bracket-equipped motor mount 90 has a cylindrical rubber mount body 16 press-fitted into a mounting hole 94 in the second bracket 92 in the same manner as the first bracket-equipped motor mount 10 described above. is considered a structure. In this embodiment, while the shape of the second bracket 92 is different from that of the first bracket 12, the rubber mount body 16 press-fitted into the mounting hole 94 is the same. Therefore, the mounting hole 14 in the first bracket 12 and the mounting hole 94 in the second bracket 92 have substantially the same inner diameter.

In the second bracketed motor mount 90, the structure other than the second bracket 92 is the same as the first bracketed motor mount 10 described above, and the same members and parts as the first bracketed motor mount 10 are used. In the figure, the same reference numerals as those of the first motor mount 10 with bracket are given, and detailed description thereof is omitted. The orientation of the second motor mount 90 with bracket when it is mounted on the vehicle is not limited, but in the following description, the up-down direction means the up-down direction in FIG. The direction and left-right direction are directions perpendicular to the plane of the paper in FIG.

The second bracket 92 has a shape suitable for attachment to a member on the power unit side, such as a motor, and has a mounting hole 94 formed in the front portion thereof, and a portion other than the mounting hole 94 is hollowed out. Holes and insertion holes through which mounting bolts are inserted are appropriately provided. Thereby, the second bracket 92 has a non-rotationally symmetrical structure around the central axis L3 of the mounting hole 94 . The second bracket 92 has a through-hole 96 as an uneven positioning portion for positioning the second bracket 92 around the central axis L3 of the mounting hole 94 with respect to a jig 100 for press-fit assembly, which will be described later. is provided. In the second bracket 92, both the mounting hole 94 and the through hole 96 are circular and pass through in the left-right direction. In the second bracket 92 as well, the central axis L4 of the through hole 96 is positioned rearwardly of the central axis L3 of the mounting hole 94 and separated by a predetermined distance B (see FIG. 7). The inner diameter of the through-hole 96 is substantially equal to the inner diameter of the through-hole 20 in the first bracket 12, and is slightly larger than the outer diameter of the pin-shaped projection 106 in the jig 100 for press-fit assembly, which will be described later. It is

Here, the separation distance A between the central axis L1 of the mounting hole 14 in the first bracket 12 and the central axis L2 of the through hole 20 is equal to the center axis L3 of the mounting hole 94 in the second bracket 92 and the center of the through hole 96. It is substantially equal to the separation distance B from the axis L4. That is, although the first bracket 12 and the second bracket 92 have different overall shapes, the positional relationship of the through hole 20 with respect to the mounting hole 14 and the positional relationship of the through hole 96 with respect to the mounting hole 94 are are the same as each other.

Also in the second motor mount with bracket 90, the rubber mount main body 16 is press-fitted into the mounting hole 94 in the second bracket 92, and the same stopper member 64 as in the first motor mount with bracket 10 is mounted. is assembled to the second bracket 92 and the rubber mount main body 16 . As a result, the stopper member 64 is assembled while being positioned in the circumferential direction with respect to the second bracket 92 and the rubber mount main body 16 by the circumferential positioning mechanism 82 . The upper part is located between the side parts 66, 66 facing each other in the left-right direction, and the outer part 68 of the stopper member 64 is arranged to partially cover the peripheral wall part 18 of the mounting hole 94. It covers from the outer peripheral side in the direction of

Although illustration is omitted, the second bracketed motor mount 90 having such a configuration has, for example, a second bracket 92 attached to a member such as a motor on the power unit side in the same manner as the first bracketed motor mount 10. At the same time, the inner shaft member 22 is attached to a mating member on the vehicle body side by a bolt inserted through the bolt hole 30 of the inner shaft member 22 . As a result, in the second motor mount with bracket 90 as well, when a shocking large-amplitude vibration is input between the inner shaft member 22 and the outer cylindrical member 24 in the axial direction (horizontal direction), mutual vibration occurs in the lateral direction. The second bracket 92 facing the inner shaft member 22 and the mating member fixed to the inner shaft member 22 are in contact with each other via the side portion 66 and the projecting portion 80 of the stopper member 64 . As a result, a stopper mechanism in the axial direction similar to that of the first motor mount 10 with bracket is formed, and the amount of relative displacement in the axial direction between the inner shaft member 22 and the outer cylindrical member 24 is limited. Therefore, in the second bracketed motor mount 90 as well, the stopper member 64 including the lateral portion 66 and the projecting portion 80 constitutes an axial stopper mechanism.

As described above, in the first motor mount with bracket 10 and the second motor mount with bracket 90 in which the brackets (the first bracket 12 and the second bracket 92) have different shapes, the mounting holes 14 and 94 are fitted with rubber. A specific example of the method of press-fitting and assembling the mount body 16 will be described with reference to FIGS. In this embodiment, a common press-fitting jig 100 shown in FIG. 9 is used when press-fitting the rubber mount main body into the mounting hole of the bracket in a plurality of types of tubular vibration-damping devices with brackets. can do. In the following description, the front-rear direction refers to the left-right direction in FIG. 9, and the vertical direction refers to the up-down direction in FIG. The jig 100 for press-fit assembly is made of a rigid material such as metal.

As shown in FIG. 9, a jig 100 for press-fit assembly has a substantially rectangular plate-like base plate portion 102 extending in the front-rear direction at its lower end portion. At the rear end portion of the base plate portion 102, a plurality of pedestal portions 104a, 104a, and 104a protrude upward in accordance with the shapes of the assumed brackets (in this embodiment, the first bracket 12 and the second bracket 92). 104b is provided. The projection height dimensions of the plurality of pedestal portions 104a and 104b are appropriately set according to the assumed shape of the bracket. A pin-shaped protrusion 106 protruding upward is provided on the rear portion of the base plate portion 102 . The pin-like projection 106 is provided at an appropriate position on the base plate portion 102 in accordance with the assumed shape of the bracket. ing.

Further, at the front end portion of the base plate portion 102, there is provided a cylindrical accommodation portion for accommodating the mount support portion 112 when the rubber mount main body 16 is press-fitted into brackets (the first bracket 12 and the second bracket 92) to be described later. 108 is provided so as to protrude upward. In this embodiment, the cylindrical housing portion 108 has a bottomed cylindrical shape with a bottom plate portion 110, and as shown in the plan view of FIG. , and is separated by a predetermined distance C (see FIG. 11). The separation distance C between the central axis L5 of the cylindrical housing portion 108 and the central axis L6 of the pin-shaped projection 106 is the distance between the central axis L1 of the mounting hole 14 in the first bracket 12 and the central axis L2 of the through hole 20. The distance A and the separation distance B between the central axis L3 of the mounting hole 94 and the central axis L4 of the through hole 96 in the second bracket 92 are substantially equal. In addition, the center axis L5 of the cylindrical housing portion 108 is biased upward in the vertical direction in FIG. It bulges out farther than the

The jig 100 for press-fit assembly has a mount support portion 112 for supporting the rubber mount main body 16 in the press-fit direction (vertical direction). The mount support portion 112 has a bottomed cylindrical shape as a whole, and has a circular bottom wall portion 114 and a peripheral wall portion 116 protruding upward from the outer peripheral edge portion of the bottom wall portion 114 . An inner shaft accommodating portion 118 protruding upward is provided in the central portion of the bottom wall portion 114 , and the inner shaft accommodating portion 118 corresponds to the fastening portion 28 at the axial end of the inner shaft member 22 . A shaped housing recess 120 is provided opening upward. That is, in this embodiment, the accommodation recess 120 is substantially rectangular in plan view, and has a shape in which one of the four corners is notched. The inner shaft accommodating portion 118 is formed with a protrusion height that does not reach the upper end of the peripheral wall portion 116 .

Further, in the mount support portion 112 , a positioning pin 122 that protrudes upward is provided between the inner shaft accommodating portion 118 and the peripheral wall portion 116 in the radial direction. In this embodiment, two positioning pins 122, 122 are provided so as to be spaced apart from each other in the circumferential direction. The positioning pins 122 , 122 are adapted to be inserted through both circumferential ends of the first hollow hole 40 in the rubber mount body 16 . These positioning pins 122 , 122 protrude upward from the bottom plate portion 110 of the cylindrical housing portion 108 , pass through the bottom wall portion 114 of the mount support portion 112 , and protrude above the peripheral wall portion 116 . ing.

The outer diameter dimension of the mount support portion 112 having such a shape is slightly smaller than the inner diameter dimension of the cylindrical housing portion 108 , and the mount support portion 112 is arranged coaxially with the cylindrical housing portion 108 . Thus, the mount support portion 112 can be accommodated on the inner peripheral side of the tubular accommodation portion 108 . Here, a spring 124 is provided between the bottom plate portion 110 of the cylindrical housing portion 108 and the bottom wall portion 114 of the mount support portion 112, and the biasing force of the spring 124 causes the mount support portion 112 to move to the bottom plate. It is biased upward, away from the portion 110 . In this embodiment, the natural length of the spring 124 is substantially equal to the vertical dimension of the inner space of the cylindrical housing portion 108, and as shown in FIG. In this case, substantially the entire mount support portion 112 is located above the cylindrical housing portion 108 . Further, in the present embodiment, the outer diameter dimension of the mount support portion 112 is slightly larger than the outer diameter dimension of the mounting holes 14 and 94 in the brackets 12 and 92 and the rubber mount main body 16 (the outer diameter dimension of the outer cylindrical member 24). is reduced to

In addition, a relief portion 126 is provided at the rear portion of the cylindrical housing portion 108, which is formed by cutting out a portion of the peripheral wall. The escape portion 126 is provided over a certain circumferential length in the cylindrical housing portion 108, and the position of the upper end of the escape portion 126 in the central portion in the circumferential direction is higher than the upper end positions of the other portions in the circumferential direction. has been lowered. As a result, when the rubber mount main body 16 is press-fitted into the brackets (the first bracket 12 and the second bracket 92), which will be described later, the air inside the cylindrical housing portion 108 is released through the escape portion 126, The action of the spring prevents troubles in the press-fitting operation.

A method of press-fitting the rubber mount main body 16 into the brackets (the first bracket 12 and the second bracket 92) using the jig 100 for press-fitting assembling configured as described above will be described. FIG. 10 shows a mode of press-fitting the rubber mount main body 16 into the second bracket 92 using a jig 100 for press-fit assembly. That is, in FIG. 10, the second bracket 92 and the rubber mount main body 16 are set on the jig 100 for press-fit assembly.

Here, in the second bracket 92, the center axis L3 of the mounting hole 94 and the center axis L4 of the through hole 96 are separated from each other in the front-rear direction with a separation distance B, and the jig 100 for press-fit assembly The center axis L5 of the cylindrical housing portion 108 (mount support portion 112) and the center axis L6 of the pin-shaped projection 106 are separated from each other in the front-rear direction by a separation distance C, and these separation distances B and C are different from each other. are approximately equal. As a result, when the second bracket 92 is placed on the jig 100 for press-fit assembly, the mount support portion 112 is inserted into the mounting hole 94 and the pin is inserted into the through hole 96 . shaped projection 106 is inserted. The rear end portion of the second bracket 92 is supported by the pedestal portion 104 a of the rear end portion of the jig 100 for press-fit assembly, and the peripheral wall portion 18 forming the mounting hole 94 is attached to the mount support portion 112 . It is supported on the upper end surface of the cylindrical housing portion 108 located on the outer peripheral side.

That is, in FIG. 10 , two portions of the jig 100 for press-fit assembly that are separated from each other in the front-rear direction are inserted into the second bracket 92 . A second bracket 92 is positioned around the central axis L3 of the mounting hole 94 . Therefore, the bracket positioning portion of the jig 100 for press-fit assembly is composed of a pin-like projection 106 inserted through the through hole 96 of the second bracket 92 , and the second bracket 92 is positioned relative to the mounting hole 94 . With the uneven positioning portion (through hole 96) positioned in the circumferential direction (in this embodiment, the through hole 96 is positioned behind the mounting hole 94), the second bracket 92 is inserted into the jig for press-fit assembly. It is designed to be set in the tool 100 .

Also, the rubber mount main body 16 is supported by the mount support portion 112 of the jig 100 for press-fit assembly. Specifically, the positioning pins 122, 122 are inserted into the first hollows 40 in the rubber mount main body 16, and one (lower in FIG. 12) fastening portion 28 of the inner shaft member 22 is attached to the inner shaft It is housed in the housing recess 120 in the housing portion 118 . As a result, the outer tubular member 24 of the rubber mount main body 16 is placed on the peripheral wall portion 116 of the mount support portion 112 . That is, in this embodiment, the support surface 131 that supports the rubber mount main body 16 in the mount support portion 112 is formed by the upper surface of the peripheral wall portion 116 .

Furthermore, in this aspect, the housing recess 120 has a shape corresponding to the fastening portion 28 of the inner shaft member 22 . Here, the outer peripheral surface shape of the fastening portion 28 and the inner peripheral surface shape of the housing recess 120 of the inner shaft member 22 are each a non-circular, substantially rectangular shape, and in particular, one of the four corners is notched. It has a shape like As a result, the rubber mount main body 16 is supported while being positioned in the circumferential direction with respect to the mount support portion 112 . In addition, the positioning pins 122, 122 protruding upward from the mount support portion 112 are inserted into the first hollows 40 of the rubber mount body 16, so that the rubber mount body 16 is positioned relative to the mount support portion 112. It is supported while being positioned in the circumferential direction.

Therefore, in this aspect, the engagement positioning portion 132 for positioning the rubber mount main body 16 around the mount central axis M with respect to the mount support portion 112 of the jig 100 for press-fit assembly is an inner shaft member having a non-circular shape. 22 and the first hollows 40 through which the positioning pins 122, 122 are inserted. A mount positioning portion 133 for positioning the engagement positioning portion 132 in the circumferential direction is formed by the inner peripheral surface shape of the housing recess 120 and the positioning pins 122 , 122 .

That is, in the second bracket 92 , the pin-shaped projection 106 of the jig 100 for press-fitting assembly is inserted so that the second bracket 92 is attached to the jig 100 for press-fitting assembly by the center axis L 3 of the mounting hole 94 . A concave-convex positioning portion for positioning around is constituted by the through hole 96 . Further, the engagement positioning portion 132 provided on the rubber mount main body 16 for positioning the rubber mount main body 16 with respect to the jig 100 for press-fitting assembly around the mount center axis M is an inner shaft member having a non-circular shape. 22 and the first counterbore 40 . In the second motor mount with bracket 90 , the concave-convex positioning portion (through hole 96 ) and the engagement positioning portion 132 are separated in the front-rear direction. It can be grasped as the separation distance B from the central axis L3.

In this manner, the second bracket 92 and the rubber mount main body 16 are set in a state in which they are positioned in the circumferential direction with respect to the jig 100 for press-fit assembly. Further, by setting the rubber mount main body 16 on the mount support portion 112, the central axis L3 of the mounting hole 94 and the mount central axis M of the rubber mount main body 16 are aligned with each other. From this state, as shown in FIG. 12(a), the second jig 134 is pressed against the rubber mount main body 16 from above to move the rubber mount main body 16 to the position shown in FIG. 12(b) against the biasing force of the spring 124. The press-fitting operation is completed by press-fitting the rubber mount body 16 downward into the mounting hole 94. That is, in a state in which the rubber mount body 16 is supported on the support surface 131, the entire mount support portion 112 having the accommodating recess 120 in the support surface 131 and the mount positioning portion 133 described above is in the press-fitting direction in FIG. It moves downward. In addition, by providing the second jig 134 at a position separated from the pin-shaped projection 106 or setting the final pushing position of the second jig 134 to a position higher than the pin-shaped projection 106, the pin-shaped projection 106 interference with the press-fitting operation by the second jig 134 is avoided. Also, during such a press-fitting operation, the air inside the cylindrical housing portion 108 is released to the outside through the relief portion 126, so that the air inside the cylindrical housing portion 108 is prevented from affecting the press-fitting operation. .

FIG. 13 also shows a mode in which the rubber mount main body 16 is press-fitted into the first bracket 12 using a jig 100 for press-fit assembly. That is, when the rubber mount main body 16 is press-fitted into the first bracket 12, the first bracket 12 and the rubber mount main body 16 are set to the jig 100 for press-fitting and assembly, which is shared with the second bracket 92. do.

Here, in the first bracket 12, the center axis L1 of the mounting hole 14 and the center axis L2 of the through hole 20 are separated from each other in the front-rear direction by a separation distance A, and the separation distance A The separation distance C between the central axis L5 of the cylindrical housing portion 108 (mount support portion 112) and the central axis L6 of the pin-like projection 106 in the jig 100 for the mounting is substantially equal. As a result, the mount support portion 112 is inserted into the mounting hole 14 and the pin-like projection 106 is inserted into the through hole 20, so that the first bracket 12 is attached to the jig 100 for press-fit assembly. is placed. In this case, the rear end portion of the first bracket 12 is supported by a pedestal portion 104b different from the pedestal portion 104a on which the second bracket 92 is supported in the jig 100 for press-fit assembly. At the same time, the peripheral wall portion 18 forming the mounting hole 14 is supported on the upper end surface of the cylindrical housing portion 108 positioned on the outer peripheral side of the mount support portion 112 .

That is, also in this aspect, the two portions of the jig 100 for press-fit assembly that are separated from each other in the front-rear direction are inserted into the first bracket 12, and the jig 100 for press-fit assembly is inserted into the first bracket 12. One bracket 12 is positioned around the central axis L<b>1 of the mounting hole 14 . In short, the state in which the concave-convex positioning portion (through hole 20) of the first bracket 12 is positioned in the circumferential direction with respect to the mounting hole 14 (in this embodiment, the state in which the through hole 20 is positioned behind the mounting hole 14). , the first bracket 12 is set on a jig 100 for press-fit assembly.

Also, when the rubber mount main body 16 is press-fitted into the first bracket 12 as in the case of press-fitting the rubber mount main body 16 into the second bracket 92 shown in FIGS. The rubber mount main body 16 is supported by the mount support portion 112 of the tool 100 . As a result, the rubber mount main body 16 is supported while being positioned in the circumferential direction with respect to the mount support portion 112 . The positioning of the rubber mount main body 16 and the mount support portion 112 in the circumferential direction is such that the outer peripheral surface shape of the fastening portion 28 and the inner peripheral surface shape of the housing recess 120 of the inner shaft member 22 are non-circular shapes corresponding to each other. and/or the locating pins 122 , 122 are inserted through the first slotted holes 40 in the rubber mount body 16 .

That is, in the first bracket 12 , the through hole 20 constitutes an uneven positioning portion for positioning the first bracket 12 with respect to the jig 100 for press-fit assembly around the central axis L1 of the mounting hole 14 . The engagement positioning portion 132 in the rubber mount main body 16 is formed by the non-circular outer peripheral surface shape of the inner shaft member 22 and the first hollow hole 40 . In the first motor mount with bracket 10 , the concave-convex positioning portion (through hole 20 ) and the engagement positioning portion 132 are separated in the front-rear direction. It can be grasped as the separation distance A from the central axis L1. Therefore, in a plurality of types of bracket-equipped tubular vibration-damping devices (first and second bracket-equipped motor mounts 10, 90) having different brackets (first and second brackets 12, 92), it is possible to engage with the concave-convex positioning portion. The positional relationship with the positioning portion 132 is relatively the same around the axes (the central axes L1 and L3 of the mounting holes 14 and 94 and the central axis M of the mount).

When the rubber mount main body 16 is press-fitted into the first bracket 12, the rubber mount main body 16 is positioned in the circumferential direction by the mount positioning portion 133 as in the case of the second bracket 92 described above. In this way, by setting the first bracket 12 and the rubber mount body 16 while being positioned in the circumferential direction with respect to the jig 100 for press-fit assembly, the central axis L1 in the mounting hole 14 and the rubber mount body The mount central axes M at 16 are aligned with each other. From this state, the rubber mount body 16 of the first bracket 12 is press-fitted into the mounting hole 14 by the second jig 134 in the same manner as the second bracket 92 shown in FIG. 12(a). By doing so, the press-fitting operation is completed. That is, in the first and second bracketed motor mounts 10, 90, when the rubber mount main body 16 is press-fitted into the mounting holes 14, 94, the shapes of the brackets (first and second brackets 12, 92) are different. However, by adopting the common jig 100 for press-fit assembly, the uneven positioning portions (through holes 20 and 96) of the brackets 12 and 92 and the engagement positioning portion 132 are aligned with the axes (center axes L1 and L3). and the mount center axis (M), the respective press fittings are achieved in a state in which they are held in relatively the same positional relationship.

In the plurality of types of tubular vibration isolator with brackets (the first motor mount 10 with the bracket and the second motor mount 90 with the bracket) of the present embodiment constructed as described above, the bracket (the first bracket 12 and second bracket 92) are different from each other, but the uneven positioning portions (through holes 20, 96) of each bracket 12, 92 are common to the bracket positioning portion ( The mounting holes 14 and 94 are positioned with respect to the pin-like projections 106 in the circumferential direction, and the engagement positioning portion 132 of the rubber mount main body 16 is positioned with respect to the mount positioning portion 133 of the common jig 100 for press-fit assembly. positioned in the circumferential direction. When the brackets 12, 92 and the rubber mount body 16 are set on the jig 100 for press-fit assembly, the central axes L1, L3 of the mounting holes 14, 94 in the brackets 12, 92 and the rubber The mount main body 16 and the mount center axis M are aligned with each other. As a result, even when the brackets 12 and 92 have different shapes, the common jig 100 for press-fitting assembly can be used, and different jigs 100 for press-fitting assembly can be used for each cylindrical vibration isolator. Compared to the case where a tool is employed, the efficiency of the press-fitting work can be improved and the cost can be reduced.

In this embodiment, each bracket 12, 92 is penetrated as an uneven positioning portion for positioning each bracket 12, 92 around the central axes L1, L3 of the mounting holes 14, 94 with respect to the jig 100 for press-fit assembly. Through holes 20, 96 are provided. On the other hand, the jig 100 for press-fit assembly is provided with pin-shaped projections 106 that are inserted through the through-holes 20 and 96. The pin-shaped projections 106 are inserted through the through-holes 20 and 96. By a simple operation, each bracket 12, 92 is set in a state of being positioned with respect to the jig 100 for press-fit assembly. In particular, by providing the through holes 20, 96 in the respective brackets 12, 92, it is possible to configure the concave-convex positioning portion without providing a portion protruding outward from the brackets.

Further, in this embodiment, the outer peripheral surface of the inner shaft member 22 having a non-circular shape serves as the engagement positioning portion 132 for positioning the rubber mount main body 16 with respect to the jig 100 for press-fit assembly around the mount central axis M. A shape and a first hollow 40 are provided. On the other hand, in the mount support portion 112 of the jig 100 for press-fit assembly, a housing recess 120 having an inner peripheral surface shape corresponding to the outer peripheral surface shape of the inner shaft member 22 and a positioning hole 40 inserted through the first hollow hole 40 are provided. Pins 122, 122 are provided. Therefore, by setting the rubber mount main body 16 to the mount support portion 112 of the jig 100 for press-fit assembly in which the brackets 12 and 92 are set, the central axes L1 and L3 of the mounting holes 14 and 94 are adjusted. and the mount center axis M of the rubber mount main body 16, the rubber mount main body 16 can be positioned with respect to the mount support portion 112 in the circumferential direction.

When the rubber mount main body 16 is set on the mount support portion 112, the support surface 131 of the rubber mount main body 16 can move in the press-fitting direction together with the housing recess 120 in the mount positioning portion 133. The rubber mount main body 16 can be press-fitted into the mounting holes 14, 94 of the brackets 12, 92 while maintaining the positioned state.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited by the specific descriptions.

In the above embodiment, in the first and second bracketed motor mounts 10, 90, the respective brackets (first and second brackets 12, 92) are different and attached to the respective brackets 12, 92. Although the same rubber mount main body 16 is employed, for example, different rubber mount main bodies may be attached to brackets of different shapes to configure a plurality of types of bracket-equipped tubular vibration-damping devices. In the present invention, there is no limitation on the mounting target of each cylindrical vibration isolator that constitutes a plurality of types of cylindrical vibration isolator by being combined with each other. That is, the object of the present invention may be, for example, a plurality of types of cylindrical vibration-damping devices mounted on one automobile, or a plurality of types of cylindrical vibration-damping devices mounted on a plurality of different automobiles. It may be a device.

In the above embodiment, the common stopper member 64 is employed in the first and second motor mounts 10, 90 with brackets, but such a stopper member is not essential. Even when stopper members are provided in the first and second motor mounts 10 and 90 with brackets, stopper members having different shapes may be provided.

The shape of the rubber mount main body is not limited as long as it has a non-rotationally symmetrical structure around the central axis M of the mount. For example, in the above-described embodiment, the non-circular outer peripheral surface shape of the inner shaft member 22 and the first pick-up holes 40 through which the positioning pins 122, 122 of the jig 100 for press-fit assembly are inserted engage and position. Although the portion 132 is configured, for example, the shape of the outer peripheral surface of the inner shaft member may be circular, and depending on the required anti-vibration characteristics, the first and second hollow holes may not be provided. may Furthermore, the inner shaft member may have a cylindrical shape or a polygonal cylindrical shape, and may be fixed to the mating member with a mounting bolt or the like inserted through the inner shaft member. The mating member to which the inner shaft member is fixed may be a member on the vehicle body side, or may be a member on the power unit side such as a motor.

In the above embodiment, the through holes 20, 96 are provided in the first and second brackets 12, 92, and the pin-shaped projections 106 corresponding to the through holes 20, 96 are provided in the jig 100 for press-fit assembly. However, the first and second brackets may be provided with pin-shaped projections, and the jig for press-fit assembly may be provided with through-holes corresponding to the pin-shaped projections. Note that the recess corresponding to the pin-shaped projection does not have to be a through hole, and may be a bottomed recess. Also, these through-holes (or recesses with bottoms) and pin-like projections do not need to have circular cross-sections, and may be non-circular in cross-section.

Also, the shape of the jig for press fitting is not limited. For example, in the above embodiment, the pedestals 104a and 104b provided at the rear end portion of the jig 100 for press-fit assembly are not essential. Alternatively, only the peripheral portion of the mounting hole may be supported on the upper end surface of the tubular receiving portion.

In the above-described embodiment, a bracket-equipped motor mount for an electric vehicle was exemplified as a bracket-equipped cylindrical vibration isolator. A differential mount, a tubular vibration isolator with a bracket for use other than automobiles, or the like may be used.

In the above embodiment, two types of bracket-equipped tubular vibration-damping devices (first and second bracket-equipped motor mounts 10 and 90) were shown as a plurality of types of bracket-equipped cylindrical vibration-damping devices. The tubular vibration isolator may be of three or more types, and in any tubular vibration isolator with bracket, the same jig for press-fit assembly is used to attach the rubber mount body to the mounting hole of the bracket. should be press-fitted.

10 Motor mount with first bracket (cylindrical anti-vibration device with multiple types of brackets, cylindrical anti-vibration device with first bracket)
12 First bracket 14 Mounting hole 16 Rubber mount main body 18 Peripheral wall portion 20 Through hole (protrusion/recess positioning portion)
22 inner shaft member 24 outer cylindrical member 26 main rubber elastic body 28 fastening portion 30 bolt hole 32 fitting protrusion 34 protrusion 36 inner recess 38 rubber arm 40 first hollow 42 second hollow 44 first Outer stopper rubber 46 First contact protrusion 48 First buffer protrusion 50 Second outer stopper rubber 52 Second contact protrusion 54 Second buffer protrusion 56 First inner stopper rubber 58 Second inner Stopper rubber 60 First axis-perpendicular stopper mechanism 62 Second axis-perpendicular stopper mechanism 64 Stopper member 66 Side portion 68 Outer portion 70 Mounting hole 72 Oval portion 74 Protruding portion 76 Outer fitting projection 78 Concavo-convex portion 80 Tension Protruding portion 82 Positioning mechanism 84 (in the circumferential direction) Mating member 86 Stopper mechanism 90 Motor mount with second bracket (cylindrical anti-vibration device with multiple types of brackets, cylindrical anti-vibration device with second bracket)
92 second bracket 94 mounting hole 96 through-hole (protrusion/recess positioning portion)
100 Jig for press-fit assembly 102 Base plate portions 104a, 104b Pedestal portion 106 Pin-shaped projection (bracket positioning portion)
108 cylindrical housing portion 110 bottom plate portion 112 mount support portion 114 bottom wall portion 116 peripheral wall portion 118 inner shaft housing portion 120 housing recess portion 122 positioning pin 124 spring 126 relief portion 131 support surface 132 engagement positioning portion 133 mount positioning portion 134 second Jig L1 Central axis of mounting hole (in first bracket) L2 Central axis of through hole (in first bracket) L3 Central axis of mounting hole (in second bracket) L4 (in second bracket) Central axis L5 of through-hole Central axis L6 of cylindrical peripheral wall (in jig for press-fitting assembly) Central axis M of pin-like projection (in jig for press-fitting assembly) Mount central axis (in rubber mount main body)

Claims (6)

A cylindrical vibration isolator with a bracket, in which a cylindrical rubber mount body is press-fitted into a mounting hole of each bracket, and a plurality of types of the brackets are different from each other,
Both the bracket and the rubber mount main body have non-rotationally symmetrical structures about an axis, and
In any of the plurality of types of bracket-equipped tubular vibration-damping devices, there is provided an uneven positioning portion around an axis for a jig for press-fitting assembly provided on the bracket, and a press-fitting assembly provided on the rubber mount main body. A plurality of types of bracket-equipped tubular vibration-damping devices, in which the engagement positioning portion around the axis with respect to the jig for use is relatively in the same positional relationship around the axis. 2. A plurality of types of bracket-equipped cylinders according to claim 1, wherein the concave-convex positioning portion provided on the bracket is a through hole or a pin-shaped projection extending in the axial direction of the mounting hole, which is the press-fitting direction of the rubber mount body. type anti-vibration device. The engagement positioning portion provided on the rubber mount main body has a non-circular outer peripheral surface shape of the inner shaft member projecting in the axial direction of the mounting hole, which is the press-fitting direction in the rubber mount main body, and/or the rubber mount main body. 3. A cylindrical vibration isolator with a plurality of types of brackets according to claim 1 or 2, which is a hollow hole provided in the bracket. A method for manufacturing a bracket-equipped cylindrical vibration isolator in which a cylindrical rubber mount body is press-fitted into a mounting hole of each bracket, and the brackets are different from each other to provide a plurality of types,
Both the bracket and the rubber mount main body have non-rotationally symmetric structures about the axis,
Each of the brackets constituting the plurality of types of bracket-equipped tubular vibration-damping devices is provided with a concave-convex positioning portion. Positioning the concave-convex positioning portion of each bracket in the circumferential direction of the mounting hole and setting the bracket to the jig for press-fit assembly,
Each of the rubber mount bodies constituting the plurality of types of bracket-equipped tubular vibration-damping devices is provided with an engagement positioning portion, and a common mount positioning portion provided in the common jig for press-fit assembly. positioning the engagement positioning portion of each rubber mount body with respect to the portion in the circumferential direction of the rubber mount body, and setting the rubber mount body on the jig for press-fit assembly,
In a state in which the concave-convex positioning portion of the bracket and the engagement positioning portion of the rubber mount main body are held in the same relative positional relationship around the axis with respect to the jig for press-fit assembly, By press-fitting the rubber mount body,
A method for manufacturing a plurality of types of bracket-equipped cylindrical vibration isolator. The jig for press-fit assembly is provided with a mount supporting portion for supporting the rubber mount main body in the press-fitting direction, and the supporting surface of the rubber mount main body in the mount supporting portion is press-fitted together with the mount positioning portion. 5. The method for manufacturing a plurality of types of bracket-equipped tubular vibration-damping devices according to claim 4, wherein the bracket-equipped tubular vibration-damping device is movable in any direction. Manufacturing the plurality of types of bracket-equipped tubular vibration-damping devices according to any one of claims 1 to 3. Production method.

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