JP2010065749A - Bracket for vibration absorbing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrict the movement of a stopper elastic body in two directions while reducing cost for a mold by eliminating the need for deep drawing. <P>SOLUTION: This bracket 1 is used for a vibration absorbing device which includes a vibration absorbing device body 5 having a body elastic body 5c mounted between an inner cylinder 5a and an outer cylinder 5b, and the stopper elastic body 7 joined to the inner cylinder. It includes a cylindrical part 2 which is formed by rounding a plate material into a cylindrical shape and welding both abutting ends of the plate material to each other and into which the outer cylinder is pressed and fixed, and a stopper part 3 which is formed from a plate material with two abutting portions 3a, 3b extending in parallel to each other in spaced relation and two grooved leg portions 3c, 3d joined to the abutting portions and extending in parallel to the extending direction of the abutting portions in mutually opposite directions, one abutting portion 3a out of the abutting portions being welded and fixed to one end of the cylindrical part 2, the stopper elastic body 7 being loosely inserted between the abutting portions. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bracket used in a vibration isolator having a vibration isolator body having a main body elastic body interposed between an inner cylinder and an outer cylinder, and a stopper elastic body coupled to the inner cylinder. It is about.

  As a conventional bracket for a bush, for example, the one described in Patent Document 1 is known. This bracket is formed by deep drawing a cylindrical portion that accommodates a bush into a part of a plate material and a hook-like shape at the remaining portion of the plate material. The arm part is formed by drawing, the peripheral part of the bowl-shaped arm part is welded and fixed to the side surface of the cylindrical part, and the reinforcing plate that connects the peripheral parts of the arm part is welded and fixed.

  Further, as a conventional bracket for an anti-vibration device having an elastic body for a stopper, for example, the one described in Patent Document 2 is known. This bracket is formed by bending a plate material into a U-shape, and a flat stopper portion. Two body plates that extend from the both ends at right angles to the stopper portion and face each other are formed, and the tip portions of the body plates are bent outward at right angles to form leg portions, The main body plates are formed with slits extending in the longitudinal direction, and the stopper portion is provided with a notch portion extending from the side end to the central portion.

And in this patent document 2, between the two main body plates, the board | plate material rounded into the cylindrical shape used as the outer cylinder of a vibration isolator is inserted, and the both ends which faced each other of the board | plate material are made into the position of the slit of a main body plate. In addition, by welding the inside of those slits, welding both ends of the plate material rounded into a cylindrical shape to form the outer cylinder of the vibration isolator, and at the same time, the outer cylinder is welded and fixed to the bracket, Then, the elastic body for the main body, the inner cylinder and the elastic body for the stopper are placed in the outer cylinder, and the elastic bodies are vulcanized to adhere the elastic body for the main body to the inner cylinder and the outer cylinder and for the stopper. The elastic body is coupled to the inner cylinder inside the flat stopper portion, and the liquid chamber is formed by attaching an orifice member and a diaphragm in the main body elastic body to form a liquid vibration isolator.
JP 63-219423 A Japanese Patent No. 365783

  However, the former bracket has the problem of increasing the cost of the deep drawing mold because it uses deep drawing, and it is necessary to provide a stopper portion for use in a vibration isolator having an elastic body for stopper. Furthermore, there was a problem that the cost increased.

  In the latter bracket, since it is formed by rounding, bending, punching, and welding, the cost of the deep drawing mold is not incurred, but there is only one stopper portion facing the elastic body for stopper. For this reason, there has been a problem that only one direction of movement of the stopper elastic body can be restricted.

  An object of the present invention is to advantageously solve the above-mentioned problems, and a vibration isolator bracket according to the present invention includes a main body elastic body interposed between an inner cylinder and an outer cylinder. In a bracket used in a vibration isolator having an apparatus main body and an elastic body for a stopper coupled to the inner cylinder, a plate material is rounded into a cylindrical shape, and both ends of the plate material butted against each other are welded together. A cylindrical portion in which the outer cylinder is press-fitted and fixed, two abutting portions that are spaced apart and extend in parallel, and are coupled to the abutting portions and are parallel to the extending direction of the abutting portions. And two groove-shaped leg portions extending in opposite directions to each other, and one of the contact portions is fixed by welding to one end of the tubular portion. The stopper elastic body is loosely inserted between the contact parts. A stopper portion that is characterized in that it comprises a.

  According to the bracket for a vibration isolator of the present invention, the cylindrical portion on which the outer cylinder of the vibration isolator body is press-fitted and fixed rounds the plate material into a cylindrical shape, and both end portions of the plate material that are butted against each other are welded to each other. The stopper part formed and loosely inserted into the stopper elastic body of the vibration isolator is connected to the two abutting parts which are spaced apart from each other and extend in parallel, and the abutting parts thereof. Formed from a plate material so as to have two groove-shaped leg portions extending in opposite directions in parallel to the extending direction of one of the contact portions. Since the die is not used for manufacturing this bracket, the cost of the mold can be reduced, and the stopper portion has two abutting portions. Can be controlled.

  In the vibration isolator bracket of the present invention, the stopper portion is formed by bending the plate material into a rectangular tube shape so that the two contact portions are positioned to face each other, and the end portions of the plate material that are butted against each other It is preferable that the end portions of the plate members that are butted against each other are positioned at the one contact portion. Since the one abutting portion is welded and fixed to one end of the cylindrical portion, in this way, the cylindrical portion reinforces the abutting portion, and the end portions of the abutting portion of the plate material that are abutted to each other It is possible to prevent peeling of welding.

  Further, in the vibration isolator bracket of the present invention, a hole through which a coupling portion that couples the inner cylinder and the stopper elastic body passes is formed in the one contact portion of the stopper portion. preferable. If it does in this way, since the elastic body for stoppers contacts the contact part around the through hole, it is possible to prevent peeling of the welded ends of the plate members of the contact part.

  Furthermore, in the vibration isolator bracket of the present invention, it is preferable that the plate member of the cylindrical portion is thinner than the plate member of the stopper portion. Since a force is applied to the cylindrical portion via the vibration isolator, the bracket is not required to be as strong as the stopper portion. In this way, the bracket can be manufactured lighter and at a lower cost.

  Further, in the vibration isolator bracket of the present invention, it is preferable that the stay portion extending from the tubular portion is welded and fixed at a position covering the both end portions of the plate portion of the tubular portion that face each other. . If it does in this way, a stay part will reinforce the both ends which the board | plate material of the cylindrical part faced | matched, and it can prevent peeling of the welding of the edge parts which faced each other of the board | plate material of a cylindrical part.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a vibration isolator bracket according to the present invention, and FIGS. 2 (a), (b), (c) and (d) are views of the bracket of the above embodiment. The top view which shows a contact part and a leg part, a front view, the perspective view seen from the front side, the perspective view seen from the back side, FIG. 3 is an expanded view of the contact part and leg part of the bracket of the said Example, FIG. 4 is a perspective view showing the bracket of the above-described embodiment in a state in which the vibration isolator is supported, and FIGS. 5A, 5B, 5C, and 5D are those in the state in which the vibration isolator is supported. BRIEF DESCRIPTION OF THE DRAWINGS It is the top view which shows the bracket of an Example, sectional drawing seen from the front side, side view, and sectional drawing seen from the side side, In the figure, the code | symbol 1 is the bracket for vibration isolator of this Example, 2 is the bracket 1 3 is a stopper portion of the bracket 1, 4 is a stay portion of the bracket 1, and 5 is a vibration isolator. Vibration apparatus main body, 6 arm member, 7 denotes a stopper rubber as a stopper elastic body of the anti-vibration device, respectively.

  An anti-vibration device including the anti-vibration device body 5 and the stopper rubber 7 is provided, for example, between an engine (not shown) which is a vibration generating part of an automobile and a vehicle body (not shown) of the automobile. The vibration isolator bracket 1 of this embodiment for supporting the vibration isolator body 5 of the anti-vibration device, which prevents the transmission of vibration from the engine to the vehicle body while supporting the engine, is the above-described cylindrical shape. Part 2, stopper part 3 and stay part 4, wherein cylindrical part 2 is formed by rolling a plate material into a cylindrical shape by, for example, roll molding, and joining both end portions 2 </ b> A and 2 </ b> B of the plate material to each other by welding. And formed.

  The stopper portion 3 is connected to two contact portions 3a and 3b extending in parallel and spaced apart from each other, and an extending direction of the contact portions 3a and 3b coupled to the contact portions 3a and 3b. It has two groove-shaped leg portions 3c and 3d extending in opposite directions in parallel. When manufacturing the stopper portion 3, for example, by punching with a mold or cutting by laser cutting, etc. 3 of the plate member 3P formed in the shape shown in the development view in FIG. 3, the portions 3H and 3I each having a semicircular notch are perpendicular to the paper surface of the drawing along the broken lines with respect to the portions 3F and 3G. Then, the portions 3F and 3G are bent along the alternate long and short dash line with respect to the portions 3B and 3D, as shown by the arrows, at a right angle with respect to the drawing sheet, and then the portions 3B, 3C, 3D and 3E are As shown by the arrows along the dashed line for part 3A To the paper surface by bending at a right angle upward, assembled as shown in FIG. 2 (a) ~ (d).

  Next, as shown in FIG. 1, the end portions of the semicircular cutouts of the portions 3H and 3I that are butted against each other by the above-mentioned bending are welded together to form a flat contact portion 3b, A rectangular tube having two contact portions with another flat contact portion 3a extending in parallel with the contact portion 3b and having a circular through hole 3e is formed, and an end 3J of the portion 3F is further formed. And the end portion 3K of the portion 3C are welded and joined, and the end portion 3L of the portion 3G and the end portion 3M of the portion 3E are welded and joined. The leg portions 3c and 3d are integrally coupled to each other.

  In FIG. 1 of the stopper portion 3 manufactured in this way, the welded portions of the plate material both ends 2A and 2B of the cylindrical portion 2 are oriented laterally on the upper contact portion 3a in the longitudinal direction of the stopper portion 3. In addition, one end in the axial direction of the cylindrical portion 2 is brought into contact so that the cylindrical portion 2 is concentric with the through hole 3e of the contact portion 3a, and the axial end of the cylindrical portion 2 is stoppered. The stay part 4 is fixed to the outer peripheral surface of the cylindrical part 2 so as to be welded and fixed to the abutting part 3a of the part 3 and to cover the welded part of the cylindrical part 2 across the welded parts 2A and 2B. The base part 4a is brought into contact, and the base part 4a is welded and fixed to the outer peripheral surface of the cylindrical part 2, whereby the vibration isolator bracket 1 of this embodiment is manufactured. The plate material of the cylindrical portion 2 is thinner than the plate material of the stopper portion 3.

  On the other hand, as shown in FIG. 5, the vibration isolator main body 5 has a cup-shaped inner cylinder 5 a and a diameter larger than that of the inner cylinder 5 a and is positioned concentrically with respect to the inner cylinder 5 a and shifted in the axial direction. An inverted cup-shaped main body rubber 5c as an elastic body for the main body is disposed between the outer cylinder 5b, the main body rubber 5c is vulcanized and bonded to the inner cylinder 5a and the outer cylinder 5b, and is attached to the inner cylinder 5a. On the other hand, a pipe 5d as a coupling portion is arranged concentrically with the inner cylinder 5a on the outer cylinder 5b side, one end in the axial direction of the pipe 5d is welded to the inner cylinder 5a, and the inner circumference of the other end of the pipe 5d When the anti-vibration device body 5 is supported by the anti-vibration device bracket 1 of this embodiment, as shown in FIG. 5 (b), the outer cylinder 5b is formed. While press-fitting into the cylindrical portion 2, the other end of the pipe 5d is loosely inserted into the through hole 3e of the stopper portion 3. On the other hand, the base portion 6a of the arm member 6 surrounded by the stopper rubber 7 is loosely inserted into the rectangular tube of the stopper portion 3 in the axial direction thereof and contacted. The arm member 6 is positioned between the portions 3a and 3b, and the bolt 5e inserted through the base portion 6a of the arm member 6 is screwed to the female screw at the other end of the pipe 5d. It binds to 5a.

  The anti-vibration device bracket 1 according to this embodiment, which supports the anti-vibration device main body 5 as described above, attaches the two legs 3c and 3d to, for example, a side member in the engine room of the vehicle body. At the same time, the tip of the arm member 6 can be mounted on the vehicle body by attaching the tip of the stay 4 to, for example, an inner panel in the engine room, and the tip of the arm member 6 having the base 6a coupled to the inner cylinder 5a of the vibration isolator main body 5 As a result, vibration transmission from the engine to the vehicle body can be prevented while supporting the engine.

  Therefore, according to the vibration isolator bracket 1 of this embodiment, the cylindrical portion 2 into which the outer cylinder 5b of the vibration isolator main body 5 is press-fitted and fixed rounds the plate material into a cylindrical shape, and both ends of the plate material abut each other. The stopper portions 3 formed by welding the portions 2A, 2B to each other and loosely inserted into the stopper elastic body 7 of the vibration isolator are two abutting portions 3a, 3b that are spaced apart from each other and extend in parallel. Are formed from a plate material so as to have two groove-shaped legs 3c and 3d which are coupled to the abutting portions 3a and 3b and extend in opposite directions in parallel to the extending direction thereof. Since one of the contact portions 3a and 3b is fixed by welding to one end of the cylindrical portion 2, the manufacturing cost of the bracket 1 can be reduced because the deep drawing is not used. In addition, the stopper portion 3 has two contact portions 3a. 3b, the stopper rubber 7 can be restricted from moving in two directions along the axial direction of the inner and outer cylinders 5a, 5b of the vibration isolator body 5, and the stopper portion 3 has two side walls. The movement of the stopper rubber 7 in two directions perpendicular to the axial direction of the inner and outer cylinders 5a and 5b of the vibration isolator body 5 can also be restricted.

  Further, according to the vibration isolator bracket 1 of this embodiment, the stopper portion 3 bends the plate material into a rectangular tube shape so that the two abutting portions 3a and 3b face each other, and the plate materials are mutually connected. The abutted end portions are formed by welding to each other, and the abutted end portions of the plate material are located at one abutting portion 3a, and the one abutting portion 3a is the cylindrical portion 2 Since the cylindrical portion 2 reinforces the abutting portion 3a, it is possible to prevent peeling of the welded end portions of the plate members of the abutting portion 3a.

  In addition, according to the vibration isolator bracket 1 of this embodiment, the through hole 3e through which the pipe 5d connecting the inner cylinder 5a and the stopper rubber 7 passes is formed in one abutting portion 3a of the stopper portion 3. Therefore, the stopper rubber 7 comes into contact with the contact portion 3a around the through hole 3e, so that the contact force can be evenly received around the through hole 3e, and the plate of the contact portion 3a It is possible to prevent peeling of the welds between the end portions butted against each other.

  Furthermore, since force is applied to the cylindrical portion 2 through the vibration isolator, the strength of the stopper portion 3 is not required, and according to the vibration isolator bracket 1 of this embodiment, the plate material of the cylindrical portion 2 is Since the stopper 3 is thinner than the plate member, the bracket 1 can be manufactured lighter and at a lower cost.

  Further, according to the vibration isolator bracket 1 of this embodiment, the stay portion 4 extending from the cylindrical portion 2 is welded and fixed at a position covering both end portions 2A and 2B of the plate portion of the cylindrical portion 2 which are abutted with each other. Therefore, the stay portion 4 reinforces both end portions 2A and 2B where the plate material of the cylindrical portion 2 is abutted, and the end portions 2A and 2B of the plate portion of the cylindrical portion 2 which are abutted with each other are peeled off. Can be prevented.

  Although the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described examples, and can be appropriately changed within the scope of the claims. For example, the vibration isolator main body 5 is a known one. The stopper 3 may be a U-shaped member in which one end of the two abutting portions 3a and 3b is connected by a connecting portion instead of a rectangular tube-shaped member. But it ’s okay.

  Thus, according to the bracket for vibration isolator of the present invention, the cylindrical portion to which the outer cylinder of the vibration isolator main body is press-fitted and fixed rounds the plate material into a cylindrical shape, and both end portions of the plate material which are butted against each other are welded to each other. And a stopper part loosely inserted into the stopper elastic body of the vibration isolator is connected to the two abutting parts which are spaced apart from each other and extend in parallel, and to the abutting parts. Formed from a plate material so as to have two groove-shaped legs extending in opposite directions in parallel to the extending direction of the portion, and one of the abutting portions of the cylindrical portion is Since it is welded to one end, the cost of the mold can be reduced because deep drawing is not used to manufacture this bracket, and the stopper part has two abutting parts. Can be controlled.

It is a perspective view which shows one Example of the bracket for vibration isolator of this invention. (A), (b), (c) and (d) are a plan view, a front view, a perspective view seen from the front side, and a rear view seen from the contact part and the leg part of the bracket of the above embodiment. It is a perspective view. It is an expanded view which shows the contact part and leg part of the bracket of the said Example. It is a perspective view which shows the bracket of the said Example of the state which supported the vibration isolator. (A), (b), (c) and (d) are a plan view showing the bracket of the above embodiment in a state in which the vibration isolator is supported, a cross-sectional view seen from the front side, a side view and a side view. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bracket for vibration isolator 2 Cylindrical part 3 Stopper part 3a, 3b Contact part 3c, 3d Leg part 3e Through-hole 4 Stay part 4a, 6a Base part 5 Anti-vibration apparatus main body 5a Inner cylinder 5b Outer cylinder 5c Rubber for main body 5d Pipe 6 Arm member 7 Rubber for stopper

Claims (5)

In a bracket used for a vibration isolator body having a main body elastic body interposed between an inner cylinder and an outer cylinder, and a stopper elastic body coupled to the inner cylinder,
A cylindrical portion that is formed by rounding a plate material into a cylindrical shape and welding and joining both end portions of the plate material that are butted against each other.
Two abutting portions extending parallel to each other at a distance from each other, and two groove-shaped portions coupled to the abutting portions and extending in opposite directions in parallel to the extending direction of the abutting portions It is formed of a plate material so as to have a leg portion, and one of the contact portions is fixed by welding to one end of the cylindrical portion, and the stopper elastic body is interposed between the contact portions. A stopper part to be loosely inserted;
A bracket for an anti-vibration device, comprising:   The stopper portion is formed by bending a plate material into a rectangular tube shape so that the two abutting portions are opposed to each other, and welding and joining the end portions of the plate materials that are abutted to each other. The bracket for an anti-vibration device according to claim 1, wherein the end portions butted against each other are located at the one contact portion.   The anti-vibration device according to claim 1, wherein a hole through which a coupling portion for coupling the inner cylinder and the stopper elastic body passes is formed in the one abutting portion of the stopper portion. Bracket for.   The anti-vibration device bracket according to claim 1, wherein the plate member of the cylindrical portion is thinner than the plate member of the stopper portion.   The anti-vibration device according to claim 1, wherein a stay portion extending from the cylindrical portion is welded and fixed at a position covering both end portions of the plate portion of the cylindrical portion that face each other. bracket.

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