bracket

Abstract

This invention relates to a support that can suppress the reduction of properties and durability even when the elastic modulus of the spring portion is low. The support (1) includes: a sleeve (2); an elastomer portion (3) mounted on the sleeve (2) and formed of an elastomer; and a restraint ring (4), which is an annular member mounted on the elastomer portion (3). The elastomer portion (3) has a mounting portion (10), a stop portion (20), a spring portion (30), and a sleeve retaining portion (40). The stop portion (20) is located on the supported side compared to the mounting portion (10), and the sleeve retaining portion (40) is located on the inner circumferential side of the mounting portion (10) and the stop portion (20). The spring portion (30) extends between the stop portion (20) and the sleeve retaining portion (40). The restraint ring (4) is mounted on the stop portion (20).

Description

Technical Field

[0001] This invention relates to a support, and more particularly to a support for supporting objects. Background Technology

[0002] Brackets have long been used as devices for supporting objects. Some brackets have the function of absorbing or cushioning vibrations or forces from the device used for supporting or the supported device. In such brackets, brackets for supporting auxiliary equipment of automobiles or brackets for supporting small devices, since the supported object is light, there are brackets formed only of an elastomer or brackets formed of an elastomer and a sleeve mounted on the elastomer (for example, see Patent Document 1).

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Utility Model Application Publication No. 62-62043. Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] Due to the increasing prevalence of e-Mobility in recent years, devices mounted on vehicles and other vehicles have become lighter. In the brackets used to support these devices, to improve vibration damping, it is necessary to reduce the elastic modulus of the spring portion, which is responsible for vibration damping. On the other hand, for brackets, the mounting portion is pressed into a hole formed in the support body of the bracket and mounted on it. However, when the shape of the hole in the support body is elliptical or otherwise non-circular or not approximately circular, the stop portion near the mounting portion of the bracket may deform. For example, when the bracket is mounted on the support body, the stop portion may deform when the supported object, such as a pump, moves, or when a load is input from the support body based on the operation of the equipment or device on which the support body is mounted. For example, when the support body is mounted on a vehicle, as the vehicle moves, external forces are input from the support body to the bracket, and the stop portion may deform. The stop portion is connected to the spring portion; if the stop portion deforms, the spring portion, which has a low elastic modulus, may bend and deform. If the spring section bends and deforms, the dynamic or static spring constant of the elastic body will deviate from the desired value, causing the elastic body to deviate from the desired characteristics, and the support may fail to perform its intended function. Furthermore, when the spring section bends and deforms, stress concentration may occur in the spring section, potentially reducing its durability. Therefore, for existing supports, a structure is required that can suppress the reduction of support characteristics and durability even when the elastic modulus of the spring section is reduced.

[0008] The objective of this invention is to provide a support that can suppress the reduction of properties and durability even when the elastic modulus of the spring portion is low.

[0009] Methods for solving problems

[0010] To address the aforementioned issues, the bracket of the present invention is characterized by comprising: a sleeve, which is a cylindrical member extending along an axis; an elastomer portion mounted on the sleeve and formed of an elastomer; and a constraint ring, which is a member mounted on the elastomer portion and annular about the axis, the elastomer portion having: a mounting portion, an annular portion about the axis; a stop portion, an annular portion about the axis; a spring portion, an annular portion about the axis; and a sleeve retaining portion, which retains the sleeve, wherein the stop portion is located on one side of the axis direction compared to the mounting portion, the sleeve retaining portion is located on the inner periphery of the mounting portion and the stop portion, the spring portion extends between the stop portion and the sleeve retaining portion, and the constraint ring is mounted on the stop portion.

[0011] In one aspect of the bracket, the stop portion has a receiving portion, which is an annular recess capable of accommodating the constraint ring, the constraint ring being accommodated in the receiving portion.

[0012] In one aspect of the bracket, the constraint ring is fixed to the receiving portion of the stop portion.

[0013] In one aspect of the bracket, the constraint ring is detachably accommodated in the receiving portion of the stop.

[0014] In one aspect of the bracket, the spring portion has a bent portion, which is a portion that bends protruding toward one side in the axial direction. The spring portion forms an annular space on its outer peripheral side that opens toward one side in the axial direction between itself and the stop portion, and forms an annular space on its inner peripheral side that opens toward one side in the axial direction between itself and the sleeve retaining portion.

[0015] Invention Effects

[0016] According to the bracket of the present invention, even if the elastic modulus of the spring portion is low, the reduction in properties and durability can be suppressed. Attached Figure Description

[0017] Figure 1 This is an exploded perspective view of the bracket according to the first embodiment of the present invention, cut along a cross-section along the axis.

[0018] Figure 2 yes Figure 1 The cross-sectional view of the support along its axis is shown.

[0019] Figure 3 It is an enlarged representation Figure 1 The enlarged cross-sectional view of the stop and the vicinity of the spring portion of the bracket shown.

[0020] Figure 4 yes Figure 1 A three-dimensional view of the constraint ring of the bracket shown.

[0021] Figure 5 It means Figure 1 The diagram shows the usage status of the bracket.

[0022] Figure 6 It means in Figure 5 The diagram shows a cross-sectional view of the support in its bottom position during use.

[0023] Figure 7 It means Figure 5 A diagram showing an example of the shape of the through hole in the support body.

[0024] Figure 8 This is a diagram illustrating an example of deformation of an existing support structure.

[0025] Figure 9 This is an exploded perspective view of the bracket according to the second embodiment of the present invention, cut along a cross-section along the axis.

[0026] Figure 10 yes Figure 9 The cross-sectional view of the support along its axis is shown.

[0027] Figure 11 It is an enlarged representation Figure 9 The enlarged cross-sectional view of the stop and the vicinity of the spring portion of the bracket shown.

[0028] Figure 12 yes Figure 9 A three-dimensional view of the constraint ring of the bracket shown. Detailed Implementation

[0029] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0030] Figure 1 This is an exploded perspective view of the bracket 1 according to an embodiment of the present invention, cut along a cross section along axis x. Figure 2 This is a cross-sectional view of the bracket 1 according to an embodiment of the present invention, taken along the x-axis. The bracket according to the present invention is used, for example, for supporting a vehicle, and for supporting auxiliary equipment of a vehicle. The application of the bracket according to the present invention is not limited to vehicles.

[0031] For ease of explanation, arrow a (refer to) will be placed along the x-axis in the following direction. Figure 2 One side in the direction of the axis (the side in the axial direction) is taken as the supported side, and arrow b (refer to) is placed in the x-axis direction. Figure 2 One side in the direction of the axis x (the other side in the axial direction) is designated as the support side. More specifically, the supported side refers to the side of the auxiliary machine or other supported body supported by the bracket 1, while the supporting side refers to the side of the support body, such as the engine or vehicle frame, used to support the bracket 1. Furthermore, in the direction perpendicular to the axis x (hereinafter also referred to as "radial"), the direction away from the axis x ( Figure 2 The side with the direction of arrow c) is taken as the outer periphery, and the direction close to the axis x is ( Figure 2 The side of the arrow (in the direction of d) is taken as the inner circumference. Additionally, the axis x is an imaginary line.

[0032] like Figure 1 , 2 As shown, the bracket 1 includes: a sleeve 2, a cylindrical member extending along the axis x; an elastic body 3, mounted on the sleeve 2 and formed of an elastic body; and a constraint ring 4, a member mounted on the elastic body 3 and ring-shaped about the axis x. The elastic body 3 includes: a mounting portion 10, a ring-shaped portion about the axis x; a stop portion 20, a ring-shaped portion about the axis x; a spring portion 30, a ring-shaped portion about the axis x; and a sleeve retaining portion 40, a portion that retains the sleeve 2. The stop portion 20 is located further away from the supported side (the side in the x-axis direction) than the mounting portion 10. Figure 2 At the position (on one side in the direction of arrow a), the sleeve retaining part 40 is located on the inner circumference of the mounting part 10 and the stop part 20. The spring part 30 extends between the stop part 20 and the sleeve retaining part 40. The restraint ring 4 is mounted on the stop part 20. Hereinafter, the bracket 1 will be described in detail.

[0033] Sleeve 2 is a cylindrical component extending along axis x, for example, made of metal. Figure 1 , 2 As shown, sleeve 2 is, for example, a cylindrical or approximately cylindrical component with axis x as its central axis or approximately its central axis. As described later, a fixing mechanism for securing the supported body to the bracket 1 is installed inside sleeve 2. The fixing mechanism is, for example, a bolt and a nut, with the bolt passing through the supported body and through the sleeve 2, and the nut screwed onto the bolt. The bolt and nut are fixed to sleeve 2, thereby securing the supported body to sleeve 2.

[0034] For example, such as Figure 1 , 2As shown, the mounting portion 10 is an annular portion with the axis x as its central axis or approximately its central axis, for example, extending along an imaginary line depicting a circle centered on the axis x. The mounting portion 10 has a conical surface 11 on the outer periphery of its supporting end, for example. The conical surface 11 is a surface that tapers towards the supporting side, for example, a conical surface or a substantially conical surface with the axis x as its central axis or approximately its central axis. The mounting portion 10 has an outer peripheral surface 12 and a clamping surface 13. The outer peripheral surface 12 is a cylindrical surface extending from the supported end of the conical surface 11 toward the supported side, and the clamping surface 13 is a surface extending from the supported end of the outer peripheral surface 12 toward the inner peripheral side. The clamping surface 13 is an annular surface, for example, parallel or substantially parallel to an imaginary plane perpendicular to the axis x.

[0035] In addition, such as Figure 1 , 2 As shown, the mounting portion 10 has a groove bottom surface 14, which is a cylindrical surface extending from the end of the clamping surface 13 on its inner circumferential side toward the supported side. For example, as... Figure 2 As shown, the bottom surface 14 of the groove is a cylindrical surface or approximately cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the mounting portion 10 has an inner circumferential surface 15, which is a surface facing the inner circumferential side. As... Figure 2 As shown, the inner circumferential surface 15 is a cylindrical surface extending along the axis x. The inner circumferential surface 15 is, for example, a cylindrical surface or a substantially cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the inner circumferential surface 15 is, for example, a surface that tapers towards the supported side, such as a conical surface or a substantially conical surface with the axis x as its central axis or approximately its central axis. An annular end face 16 extends from the end of the mounting portion 10 on the supported side.

[0036] For example, such as Figure 1 , 2 As shown, the stop portion 20 is an annular portion with the axis x as its central axis or approximately its central axis, for example, extending along an imaginary line depicting a circle centered on the axis x. The stop portion 20, for example, has a ground surface 21, which is an annular surface extending outward from the supported end of the groove bottom surface 14 of the mounting portion 10. The ground surface 21 is an annular surface, for example, parallel or approximately parallel to an imaginary plane perpendicular to the axis x. The portion of the ground surface 21 on the inner peripheral side faces the clamping surface 13 of the mounting portion 10, and the ground surface 21 extends outward more than the clamping surface 13 of the mounting portion 10. Furthermore, the stop portion 20 has: an outer peripheral surface 22, a cylindrical surface extending from the outer peripheral end of the ground surface 21 towards the supported side; and a stop surface 23, a surface extending inward from the supported end of the outer peripheral surface 22 towards the inner peripheral side. The stop surface 23 is an annular surface, for example, parallel or approximately parallel to an imaginary plane perpendicular to the axis x.

[0037] Furthermore, the stop portion 20 has an inner circumferential surface 24 extending from the inner circumferential surface 15 of the mounting portion 10, and the inner circumferential surface 24 is a surface facing the inner circumferential side. The inner circumferential surface 24 is smoothly connected to the inner circumferential surface 15. Figure 2 As shown, the inner circumferential surface 24 is a cylindrical surface extending along the axis x. The inner circumferential surface 24 is, for example, a surface that tapers towards the supported side, such as a conical surface or a substantially conical surface with the axis x as its central axis or approximately its central axis. Alternatively, the inner circumferential surface 24 is, for example, a cylindrical surface or a substantially cylindrical surface with the axis x as its central axis or approximately its central axis. Figure 2 As shown, in the stop portion 20, the inner circumferential surface 24 is a portion of the part that is radially opposite to the support side of the outer circumferential surface 22.

[0038] Furthermore, the stop portion 20 has an outer inner peripheral surface 25 extending from the end of the stop surface 23 on the inner peripheral side toward the support side, and the outer inner peripheral surface 25 is a surface facing the inner peripheral side. Figure 2 As shown, the outer inner circumferential surface 25 is a cylindrical surface extending along the axis x. The outer inner circumferential surface 25 is, for example, a surface that tapers towards the support side, such as a conical surface or a substantially conical surface with the axis x as its central axis or approximately its central axis. Alternatively, the outer inner circumferential surface 25 is, for example, a cylindrical surface or a substantially cylindrical surface with the axis x as its central axis or approximately its central axis. Figure 2 As shown, in the stop portion 20, the outer inner peripheral surface 25 is the portion that is radially opposite to the supported side of the outer peripheral surface 22.

[0039] As described above, the mounting part 10 is connected to the stop part 20. Figure 2 The boundary line L1, indicated by the double-dotted line, forms the boundary between the mounting portion 10 and the stop portion 20 in the cross-section. Furthermore, the boundary line L1 is an imaginary line. Specifically, the mounting portion 10 and the stop portion 20 are integrally connected in the portion between the supported end of the groove bottom surface 14 of the mounting portion 10 and the supported end of the inner circumferential surface 15, and in the portion between the inner circumferential end of the contact surface 21 of the stop portion 20 and the supported end of the inner inner circumferential surface 24.

[0040] As described above, a restraining ring 4 is mounted on the stop portion 20. The stop portion 20, for example, has a receiving portion 26, which is an annular recess capable of accommodating the restraining ring 4, within which the restraining ring 4 is housed. More specifically, the restraining ring 4 is fixed to the receiving portion 26. For example, the restraining ring 4 is bonded to and fixed to the receiving portion 26 by vulcanization. The vulcanization bonding of the restraining ring 4 to the receiving portion 26 is performed, for example, during the vulcanization molding of the elastomer portion 3. That is, the elastomer portion 20 and the restraining ring 4 become integral during the vulcanization molding of the elastomer portion 20.

[0041] Figure 3 This is an enlarged cross-sectional view showing a portion of the area near the stop portion 20 and the spring portion 30 of the bracket 1. For example, as shown... Figures 1-3 As shown, the receiving portion 26 is an annular groove recessed from the outer peripheral surface 22 of the stop portion 20 towards the inner peripheral side, forming a space corresponding to the constraint ring 4. The receiving portion 26 opens outwards from the outer peripheral surface 22. The receiving portion 26, for example, forms a quadrilateral or approximately quadrilateral space in its cross-section, such as... Figure 3 As shown, the accommodating portion 26 has: a supported side surface 26a and a supporting side surface 26b, which are opposite to each other in the x-axis direction; and a bottom surface 26c, which serves as the bottom of the accommodating portion 26 and is connected to the ends of the supported side surface 26a and the supporting side surface 26b on their respective inner circumferential sides. As described above, during the vulcanization molding of the elastomer portion 3, the elastomer portion 20 and the constraint ring 4 become an integral unit, and the constraint ring 4 is vulcanized and bonded to the elastomer portion 20. Therefore, the shape of the accommodating portion 26 becomes a shape corresponding to the shape of the constraint ring 4.

[0042] The supported side surface 26a is, for example, an annular surface extending parallel or substantially parallel to a plane perpendicular to the axis x. Specifically, it is, for example, an annular or substantially annular surface centered or substantially centered on the axis x. Furthermore, the radial width of the cross-section of the supported side surface 26a is, for example, constant or substantially constant in the circumferential extension direction of the supported side surface 26a. The supporting side surface 26b is formed with the same shape as the supported side surface 26a. The supporting side surface 26b is, for example, an annular surface extending parallel or substantially parallel to a plane perpendicular to the axis x. Specifically, it is, for example, an annular or substantially annular surface centered or substantially centered on the axis x. Furthermore, the radial width of the cross-section of the supporting side surface 26b is, for example, constant or substantially constant in the circumferential extension direction of the supporting side surface 26b. Additionally, the bottom surface 26c is, for example, a cylindrical surface extending along the axis x. Specifically, it is, for example, a cylindrical or substantially cylindrical surface centered or substantially centered on the axis x. Furthermore, the width of the cross-section of the bottom surface 26c in the x-axis direction is constant or substantially constant, for example, in the circumferential extension direction of the bottom surface 26c.

[0043] The sleeve retaining part 40 is the portion that retains the sleeve 2 on the outer peripheral side, for example, as... Figure 2 As shown, it is mounted on the entire outer peripheral surface 2a of the sleeve 2. The sleeve retaining portion 40 may also be mounted on a portion of the outer peripheral surface 2a of the sleeve 2. The sleeve retaining portion 40 is mounted to the sleeve 2, for example, by adhesive bonding. The sleeve 2 may also be pressed into and fitted within the sleeve retaining portion 40. Furthermore, for example, as... Figure 2 As shown, the wall thickness of the sleeve retaining portion 40 increases towards the support side. Furthermore, the wall thickness refers to the radial thickness.

[0044] The spring portion 30, for example, has a curved portion 31 that bends toward the supported side, which is an annular, membrane-like portion that bends in a manner that protrudes toward the supported side. Furthermore, the spring portion 30, for example, has a curved portion 31 on the outer peripheral side ( Figure 2An outer peripheral space G1 is formed between the arrow c direction side and the stop part 20. The outer peripheral space G1 is an annular space that opens to the supported side. In addition, an inner peripheral space G2 is formed between the inner peripheral side and the sleeve holding part 40. The inner peripheral space G2 is an annular space that opens to the supported side.

[0045] For example, such as Figure 1 , 2 As shown, the spring portion 30 includes: an outer peripheral cylindrical portion 32, which is a cylindrical portion located on the outer peripheral side; and an inner peripheral cylindrical portion 33, which is a cylindrical portion located on the inner peripheral side compared to the outer peripheral cylindrical portion 32. The end of the outer peripheral cylindrical portion 32 on the supported side is integrally connected to the end of the outer peripheral side of the bent portion 31, and the end of the inner peripheral cylindrical portion 33 on the supported side is integrally connected to the end of the inner peripheral side of the bent portion 31. Furthermore, the end of the outer peripheral cylindrical portion 32 on the supported side is integrally connected to the stop portion 20, and the end of the inner peripheral cylindrical portion 33 on the supported side is integrally connected to the sleeve retaining portion 40.

[0046] Figure 2 The boundary line L2, indicated by a double-dotted line, forms the boundary between the stop portion 20 and the spring portion 30 in the cross-section. That is, for example, the stop portion 20 and the spring portion 30 are integrally connected at the portion between the supported end of the inner circumferential surface 24 of the stop portion 20 and the supported end of the outer circumferential surface 25, and at the supported end of the outer circumferential cylindrical portion 32 of the spring portion 30. Furthermore, Figure 2 The boundary line L3, indicated by a double-dotted line, forms the boundary between the sleeve retaining portion 40 and the spring portion 30 in the cross-section. For example, the end of the inner circumferential cylindrical portion 33 of the spring portion 30 on the support side is integrally connected to the outer circumferential surface 41 of the sleeve retaining portion 40 at the center in the x-direction relative to the axis of the sleeve retaining portion 40. Furthermore, as... Figure 2 As shown, for example, the boundary line L2 of the stop part 20 and the spring part 30 is radially opposite to the boundary line L3 of the sleeve retaining part 40 and the spring part 30, and their positions in the x-axis direction are the same or close. In addition, the boundary lines L2 and L3 are imaginary lines.

[0047] like Figure 3 As shown, the outer peripheral cylindrical portion 32 of the spring portion 30 tapers in diameter towards the supported side. For example, except for the transition portion 32a which serves as the part connecting to the stop portion 20, it becomes a conical or approximately conical cylindrical shape with the axis x as its central axis or approximately its central axis. This conical or approximately conical cylindrical portion (the upright portion 32b) has a constant or approximately constant thickness, for example, throughout its extension direction. Furthermore, the thickness of the upright portion 32b is... Figure 3 The width of the upright portion 32b in the cross-section shown, in a direction orthogonal to the extending direction of the upright portion 32b. For example... Figure 2 , 3As shown, in the cross-section, the upright portion 32b is inclined towards the supported portion and toward the axis x (inner circumference side). Furthermore, the shape of the upright portion 32b is not limited to the shape described above and can be other shapes. For example, the upright portion 32b may be parallel or substantially parallel to the axis x in the cross-section, or it may be inclined toward the supported portion and toward the outer circumference. Additionally, the upright portion 32b may extend along a curve in the cross-section.

[0048] like Figure 3 As shown, the inner circumferential cylindrical portion 33 of the spring portion 30 expands in diameter towards the supported side. For example, except for the transition portion 33a which serves as the part connecting to the sleeve retaining portion 40, it becomes a conical or substantially conical cylindrical shape with the axis x as its central axis or approximately its central axis. This conical or substantially conical cylindrical portion (the upright portion 33b) has a constant or substantially constant thickness, for example, throughout its extension direction. Furthermore, the thickness of the upright portion 33b is... Figure 3 The width of the upright portion 33b in the cross-section shown, in a direction orthogonal to the extending direction of the upright portion 33b. For example... Figure 2 , 3 As shown, in the cross-section, the upright portion 33b is inclined outward toward the supported side. Furthermore, the shape of the upright portion 33b is not limited to the shape described above and can be other shapes. For example, the upright portion 33b can be parallel or substantially parallel to the axis x in the cross-section, or it can be inclined inward toward the supported side. Additionally, the upright portion 33b can also extend along a curve in the cross-section.

[0049] like Figure 3 As shown, the transition portion 32a of the outer peripheral cylindrical portion 32 of the spring portion 30 is smoothly connected to the stop portion 20. For example, the inner peripheral surface of the transition portion 32a is coplanar with the inner peripheral surface 24 of the stop portion 20. Furthermore, for example, as... Figure 3 As shown, the outer peripheral surface 32c of the transition portion 32a, facing outwards, becomes a curved surface that depicts a curve concave towards the support side in the cross-section, and the curvature of the cross-section increases from the side of the raised portion 32b. For example, the outer peripheral surface 32c of the transition portion 32a... Figure 3 The curve depicted in the cross-section shown is formed by connecting multiple curves with different curvatures, with the curvature increasing from the upright portion 32b side. For example, the outer peripheral side surface 32c of the transition portion 32a... Figure 3 The curve depicted in the cross-section shown is composed of two curves with different curvatures. The curvature of the curve on the side of the upright portion 32b is less than the curvature of the curve on the side of the outer inner circumferential surface 25 of the stop portion 20. For example, the transition surface 25a, which is the portion of the outer inner circumferential surface 25 of the stop portion 20 that connects to the outer circumferential cylindrical portion 32... Figure 3 As shown, in the cross section, it becomes a surface that depicts a curve that is concave towards the support side.

[0050] like Figure 3As shown, the transition portion 33a of the inner circumferential side cylindrical portion 33 of the spring portion 30 is smoothly connected to the outer circumferential surface 41 of the sleeve retaining portion 40. For example, as Figure 3 As shown, the outer peripheral surface of the transition portion 33a becomes a curved surface that depicts a curve concave towards the supported side in cross-section, and smoothly connects with the outer peripheral surface 41 of the sleeve retaining portion 40. Furthermore, for example, as... Figure 3 As shown, the inner peripheral surface 33c of the transition section 33a, facing the inner peripheral side, becomes a curved surface that depicts a curve concave towards the support side in the cross section, and the curvature of the cross section is constant. The transition surface 41a is, for example, as shown... Figure 3 The surface shown is a curved surface that curves inward toward the support side in the cross section. The transition surface 41a is the part of the outer peripheral surface 41 of the sleeve retaining part 40 that connects with the inner peripheral cylindrical part 33.

[0051] In the spring portion 30, as described above, the curved portion 31 is connected to the upright portion 32b of the outer peripheral cylindrical portion 32 on its outer peripheral side, and further connected to the upright portion 33b of the inner peripheral cylindrical portion 33 on its inner peripheral side. Furthermore, the thickness of the upright portion 32b on the outer peripheral side is greater than the thickness of the upright portion 33b on the inner peripheral side. Therefore, the thickness of the outer peripheral end of the curved portion 31 is greater than the thickness of the inner peripheral end of the curved portion 31. For example, the thickness of the curved portion 31 gradually increases from the inner peripheral end to the outer peripheral end. Specifically, for example, the inner surface 31a, which is the surface of the curved portion 31 facing the support side, is as follows... Figure 3 As shown, the surface becomes a curve depicting a constant curvature in the cross-section. Similarly, the outer surface 31b of the curved portion 31 facing the supported side is as follows: Figure 3 As shown, this becomes a surface that depicts a curve with constant curvature in the cross-section. Furthermore, the curvature of the cross-section of the inner side 31a is greater than the curvature of the cross-section of the outer side 31b.

[0052] As described above, the inner surface 31a of the curved portion 31 of the spring portion 30 is recessed towards the supported side, and the spring portion 30 forms a spring portion space G3 as an annular space open to the supported side. Furthermore, the inner peripheral surface 24 of the stop portion 20 faces the outer peripheral surface 41 of the sleeve holding portion 40, forming an annular space G4 between them. Additionally, the inner peripheral surface 15 of the mounting portion 10 faces the outer peripheral surface 41 of the sleeve holding portion 40, forming an annular space G5 between them. The spring portion space G3 communicates with space G4, and space G4 communicates with space G5. The spring portion space G3, space G4, and space G5 form an annular space open to the supported side.

[0053] In addition, such as Figure 3 As shown, the end (front end 31c) of the outer surface 31b of the curved portion 31 of the spring portion 30 on the supported side in the x-direction is located on the supported side in the x-direction compared to the stop surface 23, which is the end of the stop portion 20 on the supported side. Furthermore, as... Figure 2 As shown, the supported end (front end 2b) of the sleeve 2 in the x-axis direction is located on the supported side compared to the front end 31c of the outer surface 31b of the bent portion 31 of the spring portion 30. Thus, the spring portion 30 is surrounded by the stop portion 20 and the sleeve retaining portion 40, and an outer peripheral space G1 is formed between the stop portion 40 and the spring portion 30. The outer peripheral space G1 is an annular space that opens to the supported side. In addition, an inner peripheral space G2 is formed between the spring portion 30 and the sleeve retaining portion 40. The inner peripheral space G2 is an annular space that opens to the supported side.

[0054] like Figures 1-3 As shown, in the bracket 1 in its free state without external force applied, the rear end 2c of the end of the sleeve 2 that serves as the support side does not protrude towards the support side, for example, but is located within the space G5. Alternatively, in the bracket 1 in its free state, the rear end 2c of the end of the sleeve 2 that serves as the support side may protrude further towards the support side than the end face 16 of the mounting portion 10.

[0055] As described above, a clamping surface 13 and a groove bottom surface 14 are formed on the mounting portion 10, and a contact surface 21 is formed on the stop portion 20. The end of the contact surface 21 on the inner circumferential side is connected to the end of the groove bottom surface 14 on the supported side. Thus, the clamping surface 13, the groove bottom surface 14, and the contact surface 21 form a mounting groove 5, which is an annular groove recessed inward. The mounting groove 5 is formed on the bracket 1 between the mounting portion 10 and the stop portion 20. As will be described later, the mounting groove 5 allows the components supporting the bracket 1 to enter the mounting groove 5, thereby fixing the bracket 1 to the support body.

[0056] As described above, in the free state of support 1, such as Figure 2 As shown, the front end 2b of the sleeve 2 is located on the supported side in the x-axis direction compared to the front end 31c of the spring portion 30. Furthermore, the front end 31c of the spring portion 30 is located on the supported side in the x-axis direction compared to the stop surface 23 of the stop portion 20. The spring portion 30 is configured such that, in the use state of the bracket 1 described later, when the supported body supported by the bracket 1 is in contact with the stop surface 23 of the stop portion 20 at its bottom, the supported end of the spring portion 30 in the x-axis direction does not contact the supported body. For example, as... Figure 2As shown, in the bracket 1 in its free state, the distance in the x-axis direction between the end g1 of the outer peripheral space G1 between the spring part 30 and the stop surface 23 of the stop part 20 is set as distance a, the distance in the x-axis direction between the front end 31c of the spring part 30 and the end g1 of the outer peripheral space G1 is set as distance b, and the distance in the x-axis direction between the front end 2b of the sleeve 2 and the stop surface 23 of the stop part 20 is set as distance S. Distances a, b, and S are respectively set to satisfy the following formula (1). Furthermore, end g1 is the end of the support side in the x-axis direction of the outer peripheral space G1, for example, the portion where the outer peripheral side surface 32c of the transition portion 32a of the outer peripheral cylinder part 32 connects to the transition surface 25a of the outer inner peripheral surface 25.

[0057] (number 1)

[0058] b < S / 2 + a (1)

[0059] When the support 1 is in use, when the sleeve 2 and the sleeve retaining portion 40 move towards the support side due to the load from the supported body, the transition portion 33a of the spring portion 30 is stretched towards the support side, and the spring portion 30 deforms to generate an elastic force. The elastic force generated by the deformation of the spring portion 30 acts on the load from the supported body, playing a buffering function and suppressing the displacement of the supported body. The spring portion 30 has the above-described shape, that is, it is deformed in the following way: starting from the sleeve retaining portion 40 side, it is continuous with the cylindrical inner peripheral cylindrical portion 33, the curved portion 31 that bends towards the supported side, and the cylindrical outer peripheral cylindrical portion 32. When the transition portion 33a is stretched, the curved portion 31 bends further first. Thus, for example, the inner surface 31a of the curved portion 31... Figure 3 The curvature of the cross section shown increases, and the front end of the bent portion 31 in the x-axis direction shifts radially outward from the position of the front end 31c in the free state, and shifts towards the support side in the x-axis direction.

[0060] Assuming the bend 31 of the spring portion 30 is a 180° bend, when the sleeve 2 moves s towards the support side in the x-axis direction, the front end of the bend 31 in the x-axis direction moves s / 2 towards the support side in the x-axis direction. Under this assumption, when the sleeve 2 moves a distance S towards the support side in the x-axis direction to the bottom state, the front end of the bend 31 in the x-axis direction becomes a position that has moved S / 2 towards the support side in the x-axis direction. Under this assumption, in the bottom state, in order to prevent the spring portion 30 from contacting the supported body, in the natural state of the bracket 1, bS / 2 < a. That is, it is necessary to satisfy the above equation (1). Based on the condition for preventing the spring portion 30 from contacting the supported body in the bottom state under this assumption, in this bracket 1, in the natural state of the bracket 1, it also becomes a shape that satisfies equation (1). In addition, in the bracket 1 that satisfies equation (1) in the natural state, the curvature of the bend 31 and the shape of the bend 31 are such that the spring portion 30 does not contact the supported body in the bottom state.

[0061] As described above, the spring portion 30 has a bent portion 31. Furthermore, the spring portion 30 is connected to an annular outer peripheral space G1 on its outer peripheral side and to an annular inner peripheral space G2 on its inner peripheral side. Therefore, the spring portion 30 can reduce its elastic force. For example, compared to a support with a spring portion that differs from the spring portion 30 in that it does not have an outer peripheral cylindrical portion 32 and the bent portion 31 extends from the stop surface 23 of the stop portion 20, the support 1 can reduce its elastic modulus. Furthermore, the thickness of the bent portion 31 increases on the outer peripheral side, and the thickness of the outer peripheral cylindrical portion 32 also increases. Therefore, in the bottom state, the outer peripheral portion of the spring portion 30, which has a strong elastic force, undergoes elastic deformation, suppressing creep in the inner peripheral portion of the spring portion 30, such as the inner peripheral cylindrical portion 33.

[0062] In addition, as described above, the elastomer part 3 has a mounting part 10, a stop part 20, a spring part 30, and a sleeve holding part 40. The elastomer part 3 is integrally formed from the same material, and the mounting part 10, the stop part 20, the spring part 30, and the sleeve holding part 40 are each part of the elastomer part 3 integrally formed.

[0063] Figure 4 This is a 3D view of constraint loop 4. (See diagram below.) Figure 4 As shown, the constraint ring 4 is a cylindrical component extending along the axis x, for example, a cylindrical or approximately cylindrical component with the axis x as its central axis or approximately its central axis. Furthermore, the constraint ring 4 is, for example, a metal component. The constraint ring 4 is not limited to metal and may also be made of other materials such as resin. Figure 4As shown, the constraint ring 4 has, for example, an inner peripheral side surface 4a, which is a surface facing the inner peripheral side; an outer peripheral side surface 4b, which is a surface facing the outer peripheral side; a supported side surface 4c, which is a surface connected to the respective supported end of the inner peripheral side surface 4a and the outer peripheral side surface 4b; and a supporting side surface 4d, which is a surface connected to the respective supporting end of the inner peripheral side surface 4a and the outer peripheral side surface 4b.

[0064] The inner circumferential surface 4a is, for example, a cylindrical surface extending along the axis x, specifically, a cylindrical or approximately cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the width of the cross-section of the inner circumferential surface 4a in the x-direction is constant or approximately constant, for example, throughout the entire circumferential extension direction of the inner circumferential surface 4a. The outer circumferential surface 4b has the same shape as the inner circumferential surface 4b. In the constraint ring 4, the inner circumferential surface 4a and the outer circumferential surface 4b face away from each other. The outer circumferential surface 4b is, for example, a cylindrical surface extending along the axis x, specifically, a cylindrical or approximately cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the width of the cross-section of the outer circumferential surface 4b in the x-direction is constant or approximately constant, for example, throughout the entire circumferential extension direction of the outer circumferential surface 4b.

[0065] The supported side surface 4c is, for example, an annular surface extending parallel or substantially parallel to a plane perpendicular to the axis x. Specifically, it is, for example, an annular or substantially annular surface centered or substantially centered on the axis x. Furthermore, the radial width of the cross-section of the supported side surface 4c is constant or substantially constant, for example, throughout its circumferential extension direction. The supporting side surface 4d has the same shape as the supported side surface 4c, and in the constraint ring 4, the supported side surface 4c and the supporting side surface 4d face away from each other. The supporting side surface 4d is, for example, an annular surface extending parallel or substantially parallel to a plane perpendicular to the axis x. Specifically, it is, for example, an annular or substantially annular surface centered or substantially centered on the axis x. Furthermore, the radial width of the cross-section of the supporting side surface 4d is constant or substantially constant, for example, throughout its circumferential extension direction.

[0066] As described above, the restraining ring 4 is vulcanized and bonded to the elastomer portion 20, and is embedded in the receiving portion 26 of the stop portion 20, being at least partially covered by the receiving portion 26. For example, within the receiving portion 26, the inner peripheral side surface 4a of the restraining ring 4 contacts the bottom surface 26c of the receiving portion 26, the supported side surface 4c of the restraining ring 4 contacts the supported side surface 26a of the receiving portion 26, and the supporting side surface 4d of the restraining ring 4 contacts the supporting side surface 26b of the receiving portion 26. Furthermore, for example, in the restraining ring 4 housed within the receiving portion 26, the outer peripheral side surface 4b is coplanar or substantially coplanar with the outer peripheral surface 22 of the stop portion 20.

[0067] The cross-sectional shape of the constraint ring 4 is, for example, quadrilateral or approximately quadrilateral. As described above, the cross-sectional shape of the space formed by the receiving portion 26 of the stop portion 20 corresponds to the cross-sectional shape of the constraint ring 4, becoming quadrilateral or approximately quadrilateral. However, the cross-sectional shape of the constraint ring 4 is not limited to the above-described shape. The cross-sectional shape of the constraint ring 4 can also be other shapes. Similarly, the cross-sectional shape of the space formed by the receiving portion 26 of the stop portion 20 is not limited to quadrilateral or approximately quadrilateral, but is a shape corresponding to the cross-sectional shape of the constraint ring 4. Furthermore, the constraint ring 4 is installed on the stop portion 20 such that its outer peripheral side surface 4b protrudes from the stop portion 20, but the entire constraint ring 4 can also be embedded within the stop portion 20.

[0068] like Figure 4 As shown, the thickness of the constraint ring 4 is T1, and its height is H1. Thickness T1 is the radial dimension of the constraint ring 4, and height H1 is the dimension along the x-axis of the constraint ring 4. As described later, the constraint ring 4 enhances the reaction force of the stop portion 20. The magnitude of the reaction force of the stop portion 20 enhanced by the constraint ring 4 can be adjusted according to the shape of the constraint ring 4. For example, by adjusting the thickness T1 and height H1 of the constraint ring 4, the magnitude of the reaction force of the stop portion 20 enhanced by the constraint ring 4 can be adjusted. Furthermore, the reaction force of the stop portion 20 refers to the force exerted by the stop portion 20 on the supported body when the supported body contacts the stop surface 23 of the stop portion 20 in the usage state described later, overcoming the force received by the stop portion 20 from the supported body.

[0069] As described above, a constraint ring 4 is installed on the stop portion 20 of the bracket 1, which increases the rigidity of the stop portion 20. Therefore, deformation of the stop portion 20 when an external force is applied to the mounting portion 10 or the stop portion 20 can be suppressed, thereby preventing deformation of the spring portion 30. In addition, the constraint ring 4 increases the reaction force of the stop portion 20, suppressing deformation of the stop portion 20 relative to the external force applied to the stop surface 23.

[0070] Next, the function of the support 1 with the above structure will be explained. Figure 5 This diagram illustrates the usage state of the bracket 1, where the bracket 1 is fixed to the support body 60 and the support body 50 is supported by the bracket 1. The support body 50 is, for example, a device such as a vacuum pump used in a vehicle, and the support body 60 is, for example, a frame of a vehicle body or other component. The support body 50 is not limited to devices such as vacuum pumps used in vehicles, and the support body 60 is not limited to a frame of a vehicle body or other component.

[0071] The mounting portion 10 of the bracket 1 is pressed into the through hole 63 of the support body 60. The through hole 63 enters the mounting groove 5 of the bracket 1, and the portion of the support body 60 near the through hole 63 is accommodated in the mounting groove 5, thereby fixing the bracket 1 to the support body 60. Since a conical surface 11 is formed on the support side of the mounting portion 10, the conical surface 11 becomes a guide for pressing the mounting portion 10 into the through hole 63, making it easier to press the mounting portion 10 into the through hole 63. Figure 5 As shown, in the usage state where the bracket 1 is fixed to the support body 60, the ground surface 21 of the stop portion 20 of the bracket 1 contacts the support surface 61, and the bracket 1 is supported on the support body 60. The support surface 61 is the supported side surface of the support body 60. Furthermore, the clamping surface 13 of the mounting portion 10 faces the back surface 62, which is the supporting side surface of the support body 60. This prevents the bracket 1 mounted on the support body 60 from detaching from it. The clamping surface 13 of the mounting groove 5 can press against the back surface 62 of the support body 60, and the clamping surface 13 can also face the back surface 62 with a gap. As described above, the ground surface 21 of the mounting groove 5 extends further outward than the clamping surface 13, and the surface area of ​​the ground surface 21 is larger than that of the clamping surface 13. This ensures the stability of the bracket 1 supported by the support body 60. On the other hand, by reducing the surface area of ​​the clamping surface 13, the insertion of the mounting portion 10 into the through hole 63 is facilitated.

[0072] A constraint ring 4 is installed on the stop part 20, which increases the rigidity of the stop part 20 and makes it difficult for the stop part 20 to deform. Therefore, even if a large load is applied from the supported body 50 to the bracket 1, the stop part 20 is unlikely to fall off from the through hole 63 of the support body 60.

[0073] For the supported body 50, a bolt 70, as an example of a fixing mechanism, is inserted into the through hole 53 of the supported body 50. The bolt 70 is inserted into the sleeve 2 from the supported side, and a nut 71, as an example of a fixing mechanism, is screwed onto the bolt 70 on the supporting side. Thus, the bolt 70 and the nut 71 are fixed to the sleeve 2, and the supported body 50 is fixed to the sleeve 2. Figure 5 As shown, in the use state, the support side surface 51 of the supported body 50 contacts the front end 2b of the sleeve 2, the fastening surface of the bolt 70 contacts the support side surface 52 of the supported body 50, the supported body 50 is pressed between the bolt 70 and the sleeve 2, and the supported body 50 is fixed on the bracket 1.

[0074] Figure 6 This is a cross-sectional view showing the shape of the bracket 1 in its bottom state, where the support body 50 is in contact with the stop surface 23 of the stop portion 20, during the use of the bracket 1. As described above, the stop portion 20, spring portion 30, and sleeve retaining portion 40 of the bracket 1 satisfy the relationship of the above formula (1), therefore even in the bottom state, such as Figure 6As shown, the spring portion 30 will not come into contact with the surface 52 of the supported body 50 and will not be pushed towards the support side. Therefore, it is possible to prevent large stresses from occurring at the connection between the outer peripheral cylindrical portion 32 of the spring portion 30, the stop portion 20 and the spring portion 30, thus preventing large deformations and suppressing creep at the connection between the outer peripheral cylindrical portion 32 of the spring portion 30, the stop portion 20 and the spring portion 30. Furthermore, it is possible to prevent large stresses from occurring at the connection between the outer peripheral cylindrical portion 32 of the spring portion 30, the stop portion 20 and the spring portion 30, thus preventing large deformations and suppressing cracking at the connection between the outer peripheral cylindrical portion 32 of the spring portion 30, the stop portion 20 and the spring portion 30.

[0075] Furthermore, as described above, the spring portion 30 has a bent portion 31 and an outer peripheral cylindrical portion 32, with an outer peripheral space G1 formed between the outer peripheral cylindrical portion 32 and the stop portion 20. Therefore, the spring portion 30 easily deforms in the bent portion 31 by further bending as the sleeve 2 moves towards the support side, and also easily bends and deforms in the outer peripheral cylindrical portion 32 as the sleeve 2 moves further towards the support side. Thus, the spring portion 30 of the bracket 1 has a low elastic modulus. Therefore, it is possible to prevent large stresses from occurring in the inner peripheral cylindrical portion 33 of the spring portion 30 and the connection between the sleeve holding portion 40 and the spring portion 30 as the sleeve 2 moves towards the support side, preventing large deformations and suppressing creep in the inner peripheral cylindrical portion 33 of the spring portion 30 and the connection between the sleeve holding portion 40 and the spring portion 30. Furthermore, it can prevent large stress from being generated at the connection between the inner circumferential cylindrical portion 33 of the spring portion 30 and the sleeve retaining portion 40 and the spring portion 30, and can prevent large deformation and suppress cracking at the connection between the inner circumferential cylindrical portion 33 of the spring portion 30 and the sleeve retaining portion 40 and the spring portion 30.

[0076] Furthermore, as described above, the transition portion 32a of the outer peripheral cylindrical portion 32 of the spring portion 30 is located on the support side in the x-axis direction compared to the stop surface 23 of the stop portion 20, and an outer peripheral space G1 exists between the stop portion 20 and the spring portion 30. This allows for a bottom state where the supported body 50 contacts the stop surface 23 but not the spring portion 30. Therefore, a limit can be set for the supported body 50's movement towards the support side without contacting the spring portion 30. Thus, even under conditions of large impacts, the movement of the supported body 50 can be restricted without contacting the spring portion 30, and the stress applied to the spring portion 30 can be limited. Furthermore, as described above, by enhancing the reaction force of the stop portion 20 through the constraint ring 4, even under conditions of large impacts, the movement of the supported body 50 can be restricted without contacting the spring portion 30.

[0077] Furthermore, as described above, it is possible to prevent large stresses from being generated in the outer peripheral cylindrical portion 32 of the spring portion 30 and the connection portion between the stop portion 20 and the spring portion 30 as the sleeve 2 moves towards the support side, thus preventing large deformations. Therefore, deformation of the stop portion 20 can be suppressed, the edge portion between the support surface 61 of the support body 60 and the through hole 63 can be prevented from sinking into the ground surface 21, and large stresses can be suppressed in the ground surface 21 of the stop portion 20 and other parts of the stop portion 20. Therefore, cracking in the stop portion 20 can be suppressed.

[0078] Furthermore, as described above, the spring portion 30 has a bent portion 31, which allows for further bending deformation. Additionally, the spring portion 30 has an outer peripheral cylindrical portion 32 and an inner peripheral cylindrical portion 33. Therefore, it is possible to suppress wear caused by the spring portion 30 contacting the sleeve retaining portion 40 and the stop portion 20 when the sleeve 2 moves radially. In this way, the bracket 1 can suppress contact wear.

[0079] The through hole 63 of the support body 60 has, for example, a through hole 63 for easy pressing into the mounting portion 10 of the bracket 1. Figure 7 The shape shown is not a perfect circle, but rather an approximately elliptical shape with a major axis and a minor axis. Therefore, if a bracket, which serves as a support for reducing the elastic modulus of the spring portion and does not have a component like the constraint ring 4, is installed as... Figure 7 In the through hole 63 of the support body 60 shown, the bracket is as follows: Figure 8 As shown, the stop portion is sometimes deformed into an elliptical shape, mimicking the shape of the through hole 63 of the support body 60. For example, when the bracket is mounted on the support body, when the supported body moves, and when a load is input from the support body based on the movement of equipment or devices such as vehicles on which the support body is mounted, such as... Figure 8 As shown, the stop portion of the bracket can sometimes deform. When the stop portion deforms, the spring portion, which has a low modulus of elasticity, may sometimes bend and deform. For example, as... Figure 8 As shown, the spring portion bends and deforms at its end along its long axis. When the spring portion bends and deforms, its characteristics deviate from the desired characteristics, and the support may sometimes fail to perform its intended function. Furthermore, when the spring portion bends and deforms, stress concentration may sometimes occur in the spring portion, thereby reducing its durability.

[0080] In contrast, as described above, the bracket 1 has a constraint ring 4 installed on the stop portion 20, which increases the rigidity of the stop portion 20. Furthermore, since the stop portion 20 is mounted on the constraint ring 4 via vulcanization bonding, this also increases the rigidity of the stop portion 20. Therefore, even when external forces are applied to the mounting portion 10, the stop portion 20, and the spring portion 30, deformation of the stop portion 20 can be suppressed, thereby preventing deformation of the spring portion 30. Therefore, even when mounted on... Figure 7Unlike brackets without the aforementioned constraint ring, the stop portion 20 in the through hole 63 of the support body 60 does not deform, or is difficult to deform. Therefore, the elastic modulus of the spring portion 30 of the bracket 1 decreases. However, for example, when the bracket 1 is mounted on the support body 60, when the support body 50 moves, and when a load is input from the support body 60 based on the movement of a vehicle or other mechanism on which the support body 60 is mounted, the spring portion 30 will not deform as... Figure 8 The spring part 30 is difficult to bend and deform as shown. Figure 8 It bends and deforms as shown.

[0081] As described above, the spring portion 30 of the bracket 1, through the constraint force of the stop portion 20 based on the action of the constraint ring 4, suppresses deformation when external forces are applied to the mounting portion 10, the stop portion 20, and the spring portion 30. Therefore, it prevents the dynamic and static spring constants of the spring portion 30 of the bracket 1 from deviating from their desired values, thus preventing its characteristics from deviating from their desired characteristics and the bracket 1 from failing to perform its intended function. Furthermore, it prevents stress concentration in the spring portion 30, which could reduce its durability. Thus, the stability of the characteristics of the bracket 1 is improved, and its durability is also improved.

[0082] As described above, the bracket 1 according to the first embodiment of the present invention can suppress the reduction of the characteristics and durability of the bracket even if the elastic modulus of the spring portion is reduced.

[0083] Next, the support 6 according to the second embodiment of the present invention will be described. Figure 9 This is an exploded perspective view of the support 6, cut along the x-axis. Figure 10 This is a cross-sectional view along the axis x of support 6. For example... Figure 9 and Figure 10 As shown, the difference between bracket 6 and bracket 1 lies in the structure of the constraint ring and the receiving part of the constraint ring. Hereinafter, regarding bracket 6, structures having the same or similar functions as bracket 1 will be labeled with the same reference numerals and their descriptions will be omitted; the different structures will be described.

[0084] like Figure 9 and Figure 10 As shown, the stop portion 20 of the bracket 6 includes a receiving portion 27, which serves as a receiving portion for the constraint ring 7, instead of a receiving portion 26. Furthermore, the constraint ring 7 of the bracket 6 differs from the constraint ring 4 of the bracket 1, and is detachably received in the receiving portion 27 of the stop portion 20. The bracket 6 and the receiving portion 27 will be described in detail below.

[0085] like Figure 9 , 10As shown, the receiving portion 27 is formed on the stop surface 23 of the stop portion 20, and is an annular groove recessed from the stop surface 23 toward the support side, forming a space corresponding to the constraint ring 7. The receiving portion 27 is open to the supported side on the stop surface 23. The receiving portion 27 is, for example, formed in a quadrilateral or approximately quadrilateral space in cross-section, such as... Figure 11 As shown, it has: an inner peripheral side surface 27a and an outer peripheral side surface 27b, which are radially opposed surfaces; and a bottom surface 27c, which forms the bottom of the receiving portion 27 and is connected to the inner peripheral side surface 27a and the outer peripheral side surface 27b at their respective supporting ends.

[0086] The inner circumferential side surface 27a is, for example, a cylindrical surface extending along the axis x, specifically, a cylindrical or substantially cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the width of the cross-section of the inner circumferential side surface 27a in the x-direction is constant or substantially constant, for example, throughout the entire circumferential extension direction of the inner circumferential side surface 27a. The outer circumferential side surface 27b is opposite the inner circumferential side surface 27a on the outer circumferential side, and is, for example, a cylindrical surface extending along the axis x, specifically, a cylindrical or substantially cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the width of the cross-section of the outer circumferential side surface 27b in the x-direction is constant or substantially constant, for example, throughout the entire circumferential extension direction of the outer circumferential side surface 27b. Additionally, the bottom surface 27c is, for example, an annular surface with a curve convex toward the support side in its cross-section. The shapes of the inner circumferential side surface 27a, the outer circumferential side surface 27b, and the bottom surface 27c are not limited to the shapes described above. For example, the inner peripheral side surface 27a can also be a conical cylindrical surface or a substantially conical cylindrical surface with the axis x as its central axis or approximately its central axis, which narrows in diameter towards the supported side in the x-direction. Similarly, the outer peripheral side surface 27b can also be a conical cylindrical surface or a substantially conical cylindrical surface with the axis x as its central axis or approximately its central axis, which widens in diameter towards the supported side in the x-direction. Furthermore, the bottom surface 27c can be, for example, an annular surface extending along a plane orthogonal to the axis x, or a surface whose cross-section depicts a curve convex towards the supported side.

[0087] Figure 12 This is a 3D view of constraint loop 7. (See diagram below.) Figure 12 As shown, the constraint ring 7 is a cylindrical component extending along the axis x, for example, a cylindrical or approximately cylindrical component with the axis x as its central axis or approximately its central axis. Furthermore, the constraint ring 7 is, for example, a metal component. The constraint ring 7 is not limited to metal and may also be made of other materials such as resin. Figure 12 As shown, the constraint ring 7 has, for example, an inner peripheral side surface 7a, which is a surface facing the inner peripheral side; an outer peripheral side surface 7b, which is a surface facing the outer peripheral side; a supported side surface 7c, which is a surface connected to the end of the supported side of the inner peripheral side surface 7a and the outer peripheral side surface 7b respectively; and a supporting side surface 7d, which is a surface connected to the end of the supporting side of the inner peripheral side surface 7a and the outer peripheral side surface 7b respectively.

[0088] The inner circumferential side surface 7a is, for example, a cylindrical surface extending along the axis x, specifically, a cylindrical or approximately cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the width of the cross-section of the inner circumferential side surface 7a in the x-direction is constant or approximately constant, for example, throughout the entire circumferential extension direction of the inner circumferential side surface 7a. The outer circumferential side surface 7b has the same shape as the inner circumferential side surface 7a. In the constraint ring 7, the inner circumferential side surface 7a and the outer circumferential side surface 7b face away from each other. The outer circumferential side surface 7b is, for example, a cylindrical surface extending along the axis x, specifically, a cylindrical or approximately cylindrical surface with the axis x as its central axis or approximately its central axis. Furthermore, the width of the cross-section of the outer circumferential side surface 7b in the x-direction is constant or approximately constant, for example, throughout the entire circumferential extension direction of the outer circumferential side surface 7b.

[0089] The supported side surface 7c is, for example, an annular surface extending parallel or substantially parallel to a plane perpendicular to the axis x. Specifically, it is, for example, an annular or substantially annular surface centered or substantially centered on the axis x. Furthermore, the radial width of the cross-section of the supported side surface 7c is constant or substantially constant, for example, throughout its circumferential extension. The supporting side surface 7d has the same shape as the supported side surface 7c, and in the constraint ring 7, the supported side surface 7c and the supporting side surface 7d face away from each other. The supporting side surface 7d is, for example, an annular surface whose cross-section depicts a curve convex toward the supporting side. The radial width of the cross-section of the supporting side surface 7d is constant or substantially constant, for example, throughout its circumferential extension. The shapes of the inner circumferential side surface 7a, the outer circumferential side surface 7b, the supported side surface 7c, and the supporting side surface 7d are not limited to the shapes described above. For example, the inner circumferential side surface 7a may also be a conical or substantially conical surface centered or substantially centered on the axis x, tapering in diameter toward the supported side. Furthermore, the outer peripheral side surface 7b may, for example, be a conical surface or a substantially conical surface that expands in diameter along the x-axis direction toward the supported side, with the x-axis as its central axis or approximately its central axis. Furthermore, the supporting side surface 7d may, for example, be an annular surface extending along a plane perpendicular to the x-axis, or a surface that depicts a curve convex toward the supported side in its cross-section.

[0090] As described above, the restraining ring 7 is housed within the receiving portion 27 of the stop portion 20. The shape of the receiving portion 27 corresponds to that of the restraining ring 7. For example, within the receiving portion 27, the inner peripheral side surface 27a of the receiving portion 27 faces the inner peripheral side surface 7a of the restraining ring 7, the outer peripheral side surface 27b of the receiving portion 27 faces the outer peripheral side surface 7b of the restraining ring 7, and the bottom surface 27c of the receiving portion 27 faces the supporting side surface 7d of the restraining ring 7. More specifically, for example, within the receiving portion 27, the inner peripheral side surface 27a of the receiving portion 27 contacts the inner peripheral side surface 7a of the restraining ring 7, the outer peripheral side surface 27b of the receiving portion 27 contacts the outer peripheral side surface 7b of the restraining ring 7, and the bottom surface 27c of the receiving portion 27 contacts the supporting side surface 7d of the restraining ring 7. Furthermore, for example, in the restraining ring 7 housed within the receiving portion 27, the supported side surface 7c is coplanar or substantially coplanar with the stop surface 23 of the stop portion 20.

[0091] As described above, the cross-sectional shape of the space formed by the receiving portion 27 of the stop portion 20 corresponds to the cross-sectional shape of the restraining ring 7, and is quadrilateral or approximately quadrilateral. Furthermore, the shapes of the restraining ring 7 and the receiving portion 27 of the stop portion 20 are not limited to the shapes described above. The shape of the restraining ring 7 can also be other shapes. Similarly, the shape of the receiving portion 27 of the stop portion 20 can be any shape that can accommodate the restraining ring 7 internally, and can also be other shapes. Furthermore, if the restraining ring 7 can be detachably accommodated in the receiving portion 27, then, for example, the restraining ring 7 and the receiving portion 27 can also have engaging portions that can engage with each other. Specifically, for example, a radially protruding convex portion or a radially recessed recess may be formed on one or both of the inner peripheral side surface 7a and the outer peripheral side surface 7b of the restraining ring 7; on the other hand, a radially recessed recess or a radially protruding convex portion may be formed corresponding to one or both of the inner peripheral side surface 27a and the outer peripheral side surface 27b of the receiving portion 27. In this case, the protrusion can be accommodated in the recess, and the protrusion is accommodated in the recess, so that the restraining ring 7 and the receiving portion 27 engage with each other. By enabling the restraining ring 7 and the receiving portion 27 to engage with each other, it is possible to prevent the restraining ring 7 accommodated in the receiving portion 27 from falling out of the receiving portion 27.

[0092] like Figure 12As shown, the thickness of the constraint ring 7 is T2, and its height is H2. Thickness T2 is the radial dimension of the constraint ring 7, and height H2 is the dimension along the x-axis of the constraint ring 7. The constraint ring 7, like the constraint ring 4, enhances the reaction force of the stop 20. The magnitude of the reaction force of the stop 20 enhanced by the constraint ring 7 can be adjusted according to the shape of the constraint ring 7. For example, the magnitude of the reaction force of the stop 20 enhanced by the constraint ring 7 can be adjusted by adjusting the thickness W2 or the height H2 of the constraint ring 7. For example, the heights H1 and H2 of the constraint rings 4 and 7 are the same or approximately the same, and the thickness T2 of the constraint ring 7 is smaller than the thickness T1 of the constraint ring 4. Therefore, the reaction force of the stop 20 of the bracket 6 is less than the reaction force of the stop 20 of the bracket 1.

[0093] Similar to supports 1 and 6, in supports with spring sections having a low elastic modulus, for example, when an excessive load is input from the support 60 causing the supported body 50 to move with a large acceleration towards the support, the supported body 50 is stopped by the stop portion 20. That is, the supported body 50 is stopped by the reaction force of the stop portion 20 against the load applied from the supported body 50. The reaction force generated by the stop portion 20 is set to a desired value, which can be adjusted to the desired value by adjusting the heights H1 and H2 and the thicknesses T1 and T2 of the constraint rings 4 and 7.

[0094] The bracket 6 has the above-described structure and functions in the same way as the bracket 1 in use. Furthermore, the restraint ring 7 is detachably housed in the receiving portion 27 and, unlike the restraint ring 4, can be removed from the elastic body portion 3. Therefore, when the bracket 6 is installed on the support body 50, by removing the restraint ring 7 from the bracket 6, the resistance of the restraint ring 7 can be eliminated, and the bracket 6 can be easily installed on the support body 50.

[0095] As described above, the support 6 according to the second embodiment of the present invention can suppress the reduction of the support's properties and durability even if the elastic modulus of the spring portion is reduced.

[0096] The embodiments of the present invention have been described above, but the present invention is not limited to the supports 1 and 6 involved in the embodiments described above, and includes all the aspects contained in the concept and claims of the present invention. Furthermore, the various structures can be appropriately and selectively combined to achieve at least a portion of the above-mentioned problems and effects. For example, the shape, material, configuration, size, etc., of each structure in the above embodiments can be appropriately modified according to the specific usage of the present invention.

[0097] Symbol Explanation

[0098] 1, 6… Bracket, 2… Sleeve, 2a… Outer peripheral surface, 2b… Front end, 2c… Rear end, 3… Elastomer part, 4, 7… Restraint ring, 4a, 7a… Inner peripheral side, 4b, 7b… Outer peripheral side, 4c, 7c… Supported side, 4d, 7d… Supporting side, 5… Mounting groove, 10… Mounting part, 11… Conical surface, 12… Outer peripheral surface, 13… Clamping surface, 14… Groove bottom surface, 15… Inner peripheral surface, 16… End face, 20… Stop part, 21… Grounding surface, 22… Outer peripheral surface, 23… Stop surface, 24… Inner inner peripheral surface, 25… Outer inner peripheral surface, 25a… Transition surface, 26, 27… Receiving part, 26a… Supported side, 26b… Supporting side, 26c… Bottom surface, 27a… Inner peripheral side, 27b… Outer peripheral side, 27c… Bottom surface, 30… Spring Part, 31…bending part, 31a…inner side, 31b…outer side, 31c…front end, 32…outer peripheral cylindrical part, 32a…transition part, 32b…standing part, 32c…outer peripheral side, 33…inner peripheral cylindrical part, 33a…transition part, 33b…standing part, 33c…inner peripheral side, 40…sleeve retaining part, 41…outer peripheral surface, 41a…transition surface, 50…supported body, 51, 52…face, 53…through hole, 60…support body, 61…support surface, 62…back side, 63…through hole, 70…bolt, 71…nut, G1…outer peripheral space, G2…inner peripheral space, G3…spring part space, G4, G5…space, g1…end, H1, H2…height, L1, L2, L3…boundary line, T1, T2…height, x…axis.

Claims

1. A stent, characterized by, include: A sleeve is a cylindrical component that extends along an axis. An elastomer portion is mounted on the sleeve and is formed of an elastomer; as well as The constraint ring is a component installed on the elastic body portion and forming a ring around the axis. The elastomer portion includes: a mounting portion, which is annular about the axis; a stop portion, which is annular about the axis; a spring portion, which is annular about the axis; and a sleeve retaining portion, which retains the sleeve. The stop portion is located on one side of the axial direction compared to the mounting portion. The sleeve retaining part is located on the inner circumferential side of the mounting part and the stop part. The spring portion extends between the stop portion and the sleeve retaining portion. The constraint ring is installed on the stop portion.

2. The bracket according to claim 1, characterized in that, The stop portion has a receiving portion, which is an annular recess capable of accommodating the constraint ring. The constraint ring is housed in the receiving portion.

3. The bracket according to claim 2, characterized in that, The constraint ring is fixed to the receiving portion of the stop portion.

4. The bracket according to claim 2, characterized in that, The constraint ring is detachably accommodated in the receiving portion of the stop.

5. The stent according to any one of claims 1 to 4, characterized in that, The spring portion has a curved portion, which is a portion that bends outward toward one side in the direction of the axis. The spring portion has an annular space on its outer peripheral side that opens to one side in the axial direction between itself and the stop portion, and an annular space on its inner peripheral side that opens to one side in the axial direction between itself and the sleeve retaining portion.

6. The bracket according to claim 1, characterized in that, The bracket is fixed to the support body and is used to support the supported body. The stop portion is a part used to restrict the movement of the supported body, and can contact the supported body to restrict its movement. The mounting part is used to fix the bracket to the support body.

7. The stent according to claim 6, characterized in that, When the stop part is in contact with the supported body, the spring part is not in contact with the supported body.

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