JPH09151974A - Cylindrical vibration controlling mount bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To moderate the strictness of dimensional precision between a mount body and a bracket holding part, and moderate also the strictness of dimensional precision for an opening part connecting structure for holding the mount in seamed state. SOLUTION: A seaming type cylindrical vibration controlling mount bracket has a holding part 2 into which a cylindrical vibration controlling mount body 40 is fitted, the holding part has an axially extending opening part 3 formed in one circumferential position, so that the holding part is openable in extended state in the opening part, and the inner circumferential surface of the holding part is closely fitted to the peripheral surface of the vibration controlling mount while holding the opening part in blocked state, whereby the vibration controlling mount body is fitted and fixed into the holding part. Connecting parts protruded onto the outside surface are arranged circumferentially opposite to each other on both opening edge parts of the opening or the vicinity thereof, and these connecting parts are mutually connected through a connecting structure utilizing plastic deformation to hold the opening part is blocked state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical anti-vibration mount bracket for use in an engine mount for an automobile or the like, which supports an outer peripheral surface of a main body of the anti-vibration mount in close contact.

[0002]

2. Description of the Related Art Cylindrical mounts are known as vibration mounts used to mount a vibrating body to a member to be mounted.

[0003] Such a cylindrical type vibration proof mount has been conventionally used.
The press-fit type was used exclusively. Such a press-fitting type cylindrical anti-vibration mount is made of aluminum (including its alloy) having a circular holding portion into which the anti-vibration mount body is fitted.
It is composed of a bracket made of metal or resin such as, and a mount body. Further, as the mount main body, a supporting shaft member located at the center and a rigid sleeve which is arranged around the supporting shaft member and whose outer diameter is set to be slightly larger than the inner diameter of the holding portion are provided between them. Those connected by a rubber elastic body inserted in are generally used. The rigid sleeve of the mount body is press-fitted into the holding portion of the bracket, so that the mount body is fitted and fixed to the bracket.

However, since the press-fit type cylindrical vibration-proof mount as described above is incompatible with the ease of press-fitting work and the close contact between the mount body and the bracket after press-fitting, the space between the mount body and the bracket holding portion is inconsistent. Strict dimensional accuracy is required, and special processing is required to finish the inner peripheral surface of the holding portion of the bracket to the required dimensional accuracy.

Therefore, the present applicant has proposed a bracket for a cylindrical anti-vibration mount of a winding type in order to eliminate the drawbacks of the conventional cylindrical anti-vibration mount (Japanese Patent Application No. 7-165839). issue).

As shown in FIG. 11, this winding type cylindrical vibration-damping mount bracket (101) comprises a holding portion (102) into which the cylindrical vibration-damping mount body is fitted.
An opening (103) extending in the axial direction is formed at one position in the circumferential direction of the holding part (102), and the holding part (102) can be opened in an expanded state in the opening (103). Is. Then, the opening (103) is expanded to substantially increase the inner peripheral length of the holding portion, and in this state, the vibration-proof mount main body (not shown) is loaded and arranged in the holding portion (102) and the opening (103) is formed. ) Is applied to bring the inner peripheral surface of the holding portion into close contact with the outer peripheral surface of the vibration isolating mount, whereby the vibration isolating mount body is fitted and fixed in the holding portion (102).

According to the winding type cylindrical vibration isolating mount bracket (101), the mount body can be easily inserted into the bracket holding portion (102) by expanding the opening (103), and then the bracket (101) Since 101) can be tightly fitted and fixed by winding it around the outer peripheral surface of the mount body, the strictness of dimensional accuracy between the mount body and the bracket holding part (102) can be eased compared to the conventional press-fitting method, and the bracket It is possible to expect an excellent effect that no special processing for finishing the inner peripheral surface of the holding portion to a required dimensional accuracy is required.

In the cylindrical vibration-proof mount bracket (101) according to the above-mentioned proposal, one opening edge is used as an opening coupling structure for holding the bracket in a tightened state on the outer peripheral surface of the mount body. Projecting locking part (104)
Are provided at the other edge of the opening so that the hook portions (105) are opposed to each other in the circumferential direction, and the locking portion (10
4) and the hook (105) were locked together.

However, the locking portion (104) and the hook portion (10
5) In order to firmly and firmly lock the lock part (104) and the lock part (104) and the hook part (105), it is necessary to have strict dimensional accuracy in the shape and positional relationship. It caused new problems such as being troublesome.

The present invention has been made in view of the above technical background. Not only can the dimensional accuracy between the mount body and the bracket holding portion be relaxed, but the mount body can be tightened. It is an object of the present invention to provide a bracket for a cylindrical vibration-proof mount that can relax the strictness of the dimensional accuracy of the opening coupling structure for holding the state.

[0011]

In order to achieve the above object, a bracket according to the present invention basically adopts the above-mentioned winding-fastening type, and an opening portion for holding the mount body in a winding-fastened state. The purpose is to utilize the plastic deformation of the members as the joint structure.

That is, the present invention is provided with a holding portion into which the cylindrical vibration-damping mount main body is fitted, and an opening extending in the axial direction is formed at one position in the circumferential direction of the holding portion, and the holding portion is formed at the opening. Can be opened in an expanded state, and by holding the opening in a closed state and bringing the inner peripheral surface of the holding part into close contact with the outer peripheral surface of the anti-vibration mount, the anti-vibration mount main body is fitted and fixed in the holding part. A cylindrical type vibration-damping mount bracket of a winding type, wherein coupling portions projecting on the outer peripheral surface are provided in circumferentially opposed arrangement at both opening edges of the opening or in the vicinity thereof. The
It is characterized in that the joint portions are joined through a joint structure utilizing plastic deformation to hold the opening portion in a closed state.

As described above, since the joint portion is joined by utilizing the plastic deformation, even if the joint portion has an error in shape or size, it may be plastically deformed so as to absorb the error. Strict precision is not needed.

As a concrete connecting structure, one joint portion is provided with a crushed portion projecting toward the other joint portion, while the other joint portion is provided at a position corresponding to the crushed portion.
A biting recess having an enlarged portion having an opening area increased in the depth direction is formed, and the crushed portion is fitted into the biting recess and bites into the enlarged portion to be plastically deformed in a retaining state. In this case, there may be mentioned a case where both coupling parts are coupled with each other. When such a connecting structure is adopted, the connecting portions are directly connected to each other, and a strong connecting strength can be obtained by an efficient connecting operation.

As another example of the coupling structure, a crushed portion is provided so as to project from each coupling portion or a recessed portion is formed, and a recessed portion corresponding to the collapsed portion of the coupling portion is formed or the coupling portion is formed. A connecting body in which a crushed portion is formed corresponding to the biting concave portion is arranged between both coupling portions, and the biting concave portion has an enlarged portion having a large opening area in the depth direction. , The crushed portion of the coupling portion is fitted into the dented portion of the coupling body and bites into the enlarged portion to be plastically deformed to a retaining state, or the crushed portion of the coupling body is fitted into the dented portion of the coupling portion. In addition, a case may be cited in which both joints are coupled through a connector by biting into the enlarged portion and being plastically deformed in a retaining state. In this case, even if an error occurs in the size of the dented portion or the crushed portion provided in each coupling portion, this is absorbed by adjusting the position of the crushed portion or the dented portion provided in the connecting body, and the dimensional accuracy of the bracket is improved. Strictness becomes increasingly unnecessary.

Further, as still another example of the joint structure, there may be mentioned a case where both joint portions are superposed and part of them are deformed in the shearing direction to be joined. In this case, since it is not necessary to provide a bite groove or a crushed portion in the joint, it is possible to simplify the cross-sectional shape of the joint and reduce the wall thickness.

[0017]

1 to 4 show an embodiment of the present invention.

In these figures, (1) is a bracket, which is manufactured by cutting an aluminum extruded shape into a predetermined length in the axial direction. The bracket (1) includes a cylindrical holding portion (2) into which a cylindrical vibration-damping mount body is fitted, and the holding portion (2).
An opening (3) extending in the axial direction is formed by dividing one location in the circumferential direction of the. Therefore, the holding portion (2) can be opened in the expanded state at the opening portion (3).

Further, a pair of connecting portions (4) and (5) each having a rectangular cross section and projecting on the outer peripheral surface are circumferentially opposed to each other at both opening edge portions of the opening portion (3) in the axial direction. It is provided in the arrangement. Moreover, a crushed portion (6) having a rectangular cross section extending in the axial direction in two rows inside and outside is projected from one of the mutually facing surfaces of the coupling portions (4) and (5), and the other of the facing surfaces is A bite groove (7) extending in the axial direction in two rows of inner and outer sides is formed at a position corresponding to the crushed portion (6). The crushed portion (6) and the bite groove (7) are joined to both the joint portions (4) and (5) by filling the bite groove (7) while plastically deforming the crushed portion (6), As a result, it plays a role of holding the opening (3) in a closed state. For this reason, the biting groove (7) is formed with an enlarged portion (7a) having a groove width larger than the upper and lower ends in the depth direction, and thus a larger opening area, in the middle portion in the depth direction, while The protrusion height of the portion (6) is set to be larger than the depth of the bite groove (7) and the cross-sectional area is set to be substantially the same as the cross-sectional area of the bite groove (7), so that the opening (3) is closed. At
The deformed and filled crushed portion (6) sufficiently penetrates into the enlarged portion (7a) to strongly prevent separation of the joint portions (4) and (5).

The method of using the cylindrical vibration-damping mount bracket shown in FIGS. 1 to 4 will be described. By expanding the holding portion (2) in the opening (3), the inner circumferential length of the holding portion is substantially increased. In the enlarged state, as shown in FIG. 2, the cylindrical vibration-damping mount body (40) is inserted into the holding portion (2). In this embodiment, the mount body (40) includes a support shaft member (41) located at the center and a cylindrical rigid sleeve (42) arranged around the support shaft member (41). A solid type is used which is connected by a rubber elastic body (43) interposed between the rigid sleeve (42) and the opening (3) of the holding portion (2) is closed. It is set to be slightly larger than the inner diameter of the holding portion when it is pressed. Thus,
Since the holding part (2) is expanded at the opening (3), the mount body (40) can be loaded into the holding part (2) very easily.

Next, when both joints (4) and (5) are pressed toward each other by a press or the like to close the opening (3), the crushed portion (6) of one joint (4) is brought into contact with the other. 3 is fitted into the biting groove (7) of the joint part (5), and as shown in FIG. 3, the tip of the crushing part (6) is on the bottom surface of the biting groove (7) before the opening (3) is closed. Abut. In this state, when the joint portions (4) and (5) are further pressed in the contact direction, the crushed portion (6) is plastically deformed into a crushed shape along the shape of the bite groove (7) as shown in FIG. Then, the bite groove (7) including the enlarged portion (7a) is filled, the mutually facing surfaces of the joint portions (4) and (5) approach each other in the contact direction, and the opening portion (3) is reduced and eventually becomes a closed state. . At the same time, the inner peripheral surface of the holding portion (2) of the bracket (1) is in close contact with the outer peripheral surface of the mount body (40), and the mount body (40) is firmly wound.

In this state, even if the pressure applied to the joint portions (4) and (5) is released, the crushed portion (6) deformed and filled in the bite groove (7) becomes the enlarged portion (7a) of the bite groove. When the mount body (40) is sufficiently bited, the separation of the two coupling portions is strongly prevented, and the fixed state of the mount main body (40) in the holding portion (2) is held.

The anti-vibration mount manufactured in this manner is attached to the member to be attached by utilizing both connecting portions (4) and (5) of the bracket (1). In order to attach to the member to be attached, one of the connecting portions (4) and (5) may be extended radially outward to provide the attaching portion, or the attaching portion may be attached to the outer peripheral surface of the bracket separately from the attaching portion. Parts may be provided.

Further, the crushed portion (6) does not necessarily have to fill the entire inside of the digging groove (7), and the crushed portion (6) is plastically deformed and the enlarged portion (7a) inside the digging groove (7). ) As long as it is possible to prevent the crushed part (6) from coming off.

5 to 7 show another embodiment of the present invention. In this embodiment, both connecting parts of the bracket are connected via a connecting body made of aluminum.

In the cylindrical vibration-damping mount bracket (11) shown in these figures, (12) is a holding portion and (13) is an opening portion, which have the same constructions as shown in FIGS. Is. A pair of connecting portions (14) (15) having a rectangular cross section that protrudes on the outer peripheral surface over the entire axial direction is provided at a position slightly circumferentially separated from both opening edges of the opening (13).
Are provided to face each other in the circumferential direction. Each connection (14)
On the mutually opposing surfaces of (15), one crushed portion (16) having a rectangular cross section is provided at the central portion in the radial direction so as to extend in the axial direction. On the other hand, (18) is a connecting body, and the connecting body (18) is formed in a rectangular cross section having substantially the same width and length as the facing surfaces of the coupling portions (14) and (15). In addition, a biting groove (17) extending in the axial direction is formed at a position corresponding to the crushed portion (16) on both surfaces of the coupling body (18) facing both coupling portions. The crushed part (16) and the bite groove (17) are filled with the bite groove (17) while plastically deforming the crushed part (16) to fill both connecting parts (14) through the connecting body (18). )
It plays a role in binding (15) and holding the opening (13) in a closed state. For this purpose, the gutter (17)
Is formed in a dovetail groove shape in which the groove width increases continuously (the opening area increases) from the upper portion to the bottom portion in the depth direction, and the enlarged portion (17a) is formed in the entire depth direction. There is. On the other hand, the crushed part (16) has a protrusion height (1)
The depth is set larger than 7), and when the opening (13) is closed, the plastically deformed crushed part (16) bites into the enlarged part (17a) and separates the two joint parts (14) (15). It is said that this will be strongly discouraged. Further, the height of the coupling body (18) is set so that the coupling body (18) and the facing surfaces of the coupling portions (14) and (15) are in close contact with each other in the closed state of the opening (3). .

The method of using the cylindrical vibration-damping mount bracket (11) shown in FIGS. 5 to 7 will be described. The opening (13)
In the state in which the holding portion (12) is expanded to substantially increase the inner circumferential length of the holding portion, the holding portion of the cylindrical vibration-damping mount body (40) having the same configuration as that shown in FIGS. Insert in (12).

Next, as shown in FIG. 6, after inserting the connecting body (18) between the connecting portions (14) and (15) in a predetermined direction, the opening (13) is closed. Both connecting parts (14, 15) are pressed in the approaching direction by a press or the like. Then
The crushed portions (16) of both joints are fitted into the respective digging grooves (17) of the connecting body (18), and the tip of the crushed portion (16) before the opening (13) is closed, the digging groove (17). Abut the bottom surface of. In this state, when the joint portions (14) and (15) are further pressed in the contact direction, the crushed portion (16) is plastically deformed into a crushed inclined shape as shown in FIG. While biting into 17a), the mutual facing surfaces of the coupling parts (14) (15) and the coupling body (18) approach each other in the close contact direction, and the opening part (13) is reduced and eventually becomes a closed state. At the same time, the inner peripheral surface of the holding portion (12) of the bracket (11) is in close contact with the outer peripheral surface of the mount body (40), and the mount body (40) is firmly wound.

In this state, even if the pressure applied to the joints (14) and (15) is released, the plastically deformed crushed part (16) bites into the enlarged part (17a) of the bite groove (17) and both Coupling (14) (1
The separation of 5) is strongly prevented, and the fixed state of tightening in the holding portion (12) of the mount body (40) is maintained.

In the above embodiment, the connecting part (14) is used.
The crushed part (16) is inserted into the connection body (18) in the (15) groove (17).
Although the case where the crushed portion is provided in the connecting portion (14) (15) may be provided in the connecting body (18), the crushed portion may be provided in one connecting portion and the other connecting portion. While the biting groove is provided, the connecting body may be provided with the corresponding biting groove and the crushed portion. Further, the crushed portion (16) may be plastically deformed so as to fill the entire groove (17).

8 to 10 show still another embodiment of the present invention. In this embodiment, shear joining is adopted as the joining structure by plastic deformation of the joining portion.

In the cylindrical vibration-damping mount bracket (21) shown in these figures, (22) is a holding part, and (23) is an opening part, which have the same structure as those shown in FIGS. Is. Relatively thin coupling portions (24) (25) projecting on the outer peripheral surface are provided in circumferentially opposed arrangements on both opening edge portions of the opening portion (23) over the entire axial direction.

This cylindrical type anti-vibration mount bracket (2
In 1), the cylinder shown in FIGS. 1 to 3 has the same configuration as that shown in FIGS. Insert the anti-vibration mount body (40) of the mold into the holding part (22). Then, the coupling parts (24) (25) are pressed in the close contact direction to close the opening part (23), and the inner peripheral surface of the holding part (22) is closely adhered to the outer peripheral surface of the mount body (40) to wind it. Tighten.

Next, the connecting portions (24) (25) in the superposed state.
As shown in FIG. 10A, a plastic deformation force in the thickness direction, that is, a shearing force is applied to the portion to be deformed (26) in FIG. Deformation is shown in FIG.
As shown in (c), a part of the wall thickness of the joint portion (25) behind the shearing direction (upper side in FIGS. 8 and 10) in the deformed portion (27) slightly remains in the shear hole (28) generated by shearing. Do to a degree. Then, this deformed portion (27) is shown in FIG.
By compressing in the thickness direction with a shearing punch (29a) and an anvil (29b) provided in the lower mold as shown in
As shown in FIG. 10 (c), the radial width of the rear (upper) shearing direction coupling portion (27 b) in the deformed portion (27) is enlarged so that the side wall portion of the shearing hole (28) is bitten. By increasing the burr at the joint (27a) on the front side (lower side) in the shearing direction, the width in the radial direction is made larger than the width of the shearing hole (28) to prevent slippage in the direction opposite to the shearing direction. . In this way, the joining force of the coupling portions (24) (25) is increased, and the fixed state of the mount main body (40) in the bracket holding portion (22) is fixed by winding.

In such a shear joint structure, the size and position of the shear deformable portion (27) are not particularly limited, but a joint force that does not create a gap between the joint portions can be generated. So you should set them. Further, the wall thickness t of each joint (24) (25) is appropriately determined in consideration of the rigidity of the joint, shear load, and the like.

In the embodiment described above, as the mount main body (40) fitted and fixed to the mounting brackets (1) (11) (21), the support shaft member (41) located at the center,
A cylindrical elastic sleeve (42) arranged around the support shaft member and a rubber elastic body (43) interposed therebetween.
I used the solid type connected by
As the mount body, there is no outer rigid sleeve (43),
In addition, it is also possible to use a type in which a liquid is enclosed in the rubber elastic body (43) from an injection port provided on the outer peripheral surface and the vibration damping function is exhibited by the enclosed liquid. In this case, the connecting parts (4) (5) (14) (15) (24) (2) by pressing
If the joining work of 5) is performed in a liquid, the liquid filling into the rubber elastic body and the fastening work of the joining portion can be performed at the same time, and the steps can be omitted.

In the embodiments shown in FIGS. 1 to 4 and 5 to 7, as the biting recesses for biting the crushed portions (6) (16), the brackets (1) (11) are axially moved. The case where the bite grooves (7) and (17) are provided over the entire area is shown, but it is not always necessary to provide over the entire area in the axial direction of the bracket, and one or a plurality of penetrating or non-penetrating shapes are provided. It may be formed as a bite hole (bite hole).

Although aluminum extruded materials are used as the brackets (1), (11) and (21), die cast products or the like may be used.

[0039]

As described above, the present invention is provided with the holding portion into which the cylindrical vibration-damping mount body is fitted, and the opening portion is formed at one circumferential position of the holding portion so as to extend in the axial direction. The holding part can be opened in the expanded state, and the opening part is held in a closed state so that the inner peripheral surface of the holding part is brought into close contact with the outer peripheral surface of the anti-vibration mount. Since it is a winding type cylindrical anti-vibration mount bracket that is supposed to be fitted and fixed to, compared to a press-fit type cylindrical anti-vibration mount bracket in which the mount body is press-fitted into the holding portion of the bracket, Strict dimensional accuracy between the mount body and the bracket holding portion may be unnecessary, and special processing for finishing the inner peripheral surface of the holding portion of the bracket to the required dimensional accuracy may be unnecessary.

In addition, at both opening edges of the opening or in the vicinity thereof, connecting portions projecting on the outer peripheral surface are provided in a circumferentially opposed arrangement, and these connecting portions are connected via a connecting structure utilizing plastic deformation. As a result, the opening is held in a closed state. Therefore, even if there is an error in the shape or size of the connecting portion, it may be plastically deformed to absorb the error. The strict dimensional accuracy required for the joint structure by locking the stop portion and the hook portion can be eliminated, and the joint portion can be easily processed.

In addition, one joint portion is provided with a crushed portion projecting toward the other joint portion, while the opening area in the depth direction is provided at a position corresponding to the crushed portion of the other joint portion. A biting recess having a large enlarged portion is formed, and the crushed portion is fitted into the biting concave portion and bites into the enlarged portion to be plastically deformed in a retaining state so that both connecting portions are joined. In such a case, the joint portions can be directly joined to each other, so that the joining work can be efficiently performed and a stronger joining strength can be obtained.

In addition, a crushed portion is formed so as to project or a dented recess is formed in each joint, and a dented recess is formed corresponding to the crushed portion of the joint or a corresponding dented recess of the joint is formed. A connecting body in which a crushed portion is formed is disposed between both coupling portions, and the biting concave portion has an enlarged portion whose opening area is increased in the depth direction, and the biting concave portion of the coupling body is formed. The crushed portion of the coupling portion is fitted and bites into the enlarged portion and is plastically deformed in a retaining state, or the crushed portion of the coupling body is fitted into the biting recess of the coupled portion and bites into the enlarged portion. If both joints are to be joined together via a connecting body by being plastically deformed in the retaining state, an error may occur in the size of the bite recess or the crushed portion provided in each joint. Also, there is a crushed part provided in the connection body The effect of can absorb this by adjusting the position of the recesses bite, can be made increasingly required strict of dimensional accuracy of the bracket.

Further, in the case where both joints are overlapped with each other and part of the joints is deformed in the shearing direction so as to be joined, it is necessary to provide a bite groove or a crushed portion in the joint. Since it is not present, the cross-sectional shape of the joint portion can be simplified and the wall thickness can be reduced, the manufacture of the bracket can be simplified, the material used can be reduced, and the cost can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bracket according to an embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view showing a state where the vibration-proof mount main body is mounted on the bracket of FIG.

FIG. 3 is a cross-sectional view showing a state in which the openings are being closed after the vibration-isolating mount body is loaded.

FIG. 4 is an enlarged cross-sectional view showing a joined state of a joining portion.

5A is a cross-sectional view of a bracket according to another embodiment of the present invention, and FIG. 5B is a cross-sectional view of a connecting piece.

6 is a transverse cross-sectional view showing a state where the vibration-proof mount main body is mounted on the bracket of FIG. 5 and the openings are being closed.

FIG. 7 is an enlarged cross-sectional view showing a connected state of a connecting portion.

FIG. 8 shows still another embodiment of the present invention,
It is a cross-sectional view showing a state in which the vibration-proof mount main body is loaded on the bracket and the openings are closed.

FIG. 9 is a plan view of FIG.

FIG. 10A is a perspective view showing a state in which a joint portion is plastically deformed by a shearing force, FIG. 10B is a perspective view showing a state before the deformed portion is pressed after the deformation, and FIG. It is a cross-sectional view of the vicinity of the rear deformation portion.

FIG. 11 is a cross-sectional view showing a bracket coupling structure according to the prior art.

[Explanation of symbols]

 1, 11, 21 ... Bracket 2, 12, 22 ... Holding part 3, 13, 23 ... Opening part 4, 14, 24 ... Coupling part 5, 15, 25 ... Coupling part 6, 16 ... Crushing part 7, 17 ... Biting Grooves (bite recesses) 7a, 17a ... Enlarged portion 18 ... Linked body 27 ... Deformed portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaharu Tochigi 6-224 Kaiyamacho, Sakai City Showa Aluminum Co., Ltd.

Claims (4)

[Claims] 1. A holding part into which a cylindrical vibration-damping mount main body is fitted, an opening extending in the axial direction is formed at one location in the circumferential direction of the holding part, and the holding part is in an expanded state in the opening. The antivibration mount main body is fitted and fixed in the holding part by holding the opening part in a closed state and bringing the inner peripheral surface of the holding part into close contact with the outer peripheral surface of the antivibration mount. In the bracket for a cylindrical anti-vibration mount made of a wound type, coupling portions projecting on an outer peripheral surface are provided in a circumferentially opposed arrangement at both opening edge portions of the opening portion or in the vicinity thereof. A bracket for a cylindrical vibration-proof mount, characterized in that the opening is held in a closed state by joining the portions via a joining structure utilizing plastic deformation. 2. A crushed portion projecting toward the other coupling portion is provided on one coupling portion, and an opening area in the depth direction is provided at a position corresponding to the crushed portion of the other coupling portion. By forming a biting concave portion having a large enlarged portion, the crushed portion is fitted into the biting concave portion and bites into the enlarged portion to be plastically deformed in a retaining state,
The cylindrical vibration-isolating mount bracket according to claim 1, wherein both coupling portions are coupled. 3. A crushed portion is projected or a dented recess is formed in each joint, and a dented recess is formed corresponding to the crushed part of the joint or a dented recess is formed in the joint. A connecting body in which a crushed portion is formed is disposed between both coupling portions, and the biting concave portion has an enlarged portion whose opening area is increased in the depth direction, and the biting concave portion of the coupling body is formed. By the crushed portion of the coupling portion is fitted and bites into the enlarged portion and is plastically deformed in a retaining state,
Alternatively, the crushed portion of the coupling body is fitted into the recessed portion of the coupling portion and bites into the enlarged portion to be plastically deformed in a retaining state, whereby both coupling portions are coupled through the coupling body. The cylindrical vibration-isolating mount bracket according to claim 1. 4. The bracket for a cylindrical vibration-damping mount according to claim 1, wherein the two coupling portions are joined together by being partially deformed in the shearing direction in a superposed state.