JP2006070925A - Cylindrical mount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylindrical mount capable of easily manufacturing and easily separating an elastic body in the case of its scrapping. <P>SOLUTION: The cylindrical mount comprises an inner cylinder 1, a cylindrical bracket 2 arranged on its outer peripheral side of the inner cylinder 1, the elastic body 3 arranged on the outer periphery of the inner cylinder 1 and made of a rubbery elastic material which is press-fitted into an inner periphery of the cylindrical bracket 2, and a crimping member 4 movably mounted on the cylindrical bracket 2. Axial displacement of an elastic leg 32 of the elastic body 3 is controlled by projecting the elastic leg to the inner periphery of the cylindrical bracket 2 so that a side plate 43 formed on the crimping member 4 is crimped on the cylindrical bracket 2. Thus, assembly and disassembly of the elastic body 3 can be easily performed by displacing the crimping member 4 so that the side plate 43 is set to move to an outer peripheral side of the cylindrical bracket 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cylindrical mount that is used as, for example, an engine mount or a suspension bush of an automobile and supports a supported body in a vibration-proof manner.

  As an engine mount used as a means for vibration-proofing and supporting an automobile engine on a vehicle body frame, an inner cylinder connected to one of the engine side and the vehicle body side, and an outer cylinder arranged on the outer periphery thereof are arranged on the other side of the engine side and the vehicle body side. There is a cylindrical mount having a structure in which an elastic body made of a rubber-like elastic material is bonded and integrated between the connected cylindrical brackets. In other words, this cylindrical mount is such that, for example, the elastic body undergoes repeated deformation due to the relative displacement between the inner cylinder and the cylindrical bracket accompanying the input of engine vibration from the engine, thereby effectively insulating the transmission vibration and the inside of the elastic body. Vibration energy is consumed as heat by friction and is attenuated.

  However, a cylindrical mount in which an elastic body and a cylindrical bracket are bonded and integrated requires a bonding process using a vulcanized adhesive at the time of manufacturing, so that the manufacturing cost is high and after a long period of use. At the time of disposal, the cylindrical bracket that can be recycled as a resource and the elastic body that is difficult to recycle cannot be separated, and it is difficult to separate and recycle the resource.

Therefore, in recent years, a cylindrical mount has been proposed in which a cylindrical bracket and an elastic body are not bonded as described in Patent Document 1. That is, the mount of Patent Document 1 includes an inner cylinder connected to one of the engine side and the vehicle body side, an elastic body made of a rubber-like elastic material integrally fixed to an outer peripheral surface thereof, and the elastic body is non-adhered. And a bracket metal part fixed to the bracket cylinder part, and a side plate for sandwiching the elastic body from both sides in the axial direction is formed on the bracket metal part.
JP 2000-193004

  However, according to the cylindrical mount of Patent Document 1, in order to fix the elastic body to the inner periphery of the bracket cylinder part in the manufacturing process, it must be inserted so as to get over the side plate of the bracket fitting attached to the bracket cylinder part. Don't be. For this reason, it is necessary to compress the elastic body in advance so as to be smaller than the inner diameter of the side plate, and by releasing the compression of the inserted elastic body, the elastic body is pressed against the inner periphery of the bracket cylinder portion. It is difficult to control the repulsive force. For this reason, it is difficult to place the elastic body in a predetermined position.

  The present invention has been made in view of the above points, and its technical problem is to provide a cylindrical mount that is easy to manufacture and that can easily separate elastic bodies when discarded. It is to provide.

  As means for effectively solving the technical problem described above, the cylindrical mount according to the invention of claim 1 includes an inner cylinder, a cylindrical bracket disposed on the outer peripheral side of the inner cylinder, and the inner cylinder. An elastic body made of a rubber-like elastic material provided on the outer periphery and press-fitted into the inner periphery of the cylindrical bracket; and a crimping member attached to the cylindrical bracket so as to be displaceable. A side plate that protrudes toward the inner periphery of the cylindrical bracket and restricts the axial displacement of the elastic body is formed by being caulked and fixed to the bracket.

  According to a second aspect of the present invention, in the cylindrical mount according to the first aspect of the present invention, a circumferential stopper is formed on the cylindrical bracket at both sides in the circumferential direction of the pressure contact portion with the elastic body. It has been done.

  Therefore, in the manufacturing process of the cylindrical mount, when the elastic body is incorporated into the inner periphery of the cylindrical bracket, the caulking member attached to the cylindrical bracket is positioned on the outer peripheral side of the cylindrical bracket. If it is displaced in advance as described above, it is not necessary to greatly compress the elastic body, so that it can be easily assembled by press-fitting. After the elastic body is assembled, the displacement of the elastic body is restricted in the axial direction by displacing the caulking member so that the side plate protrudes to the inner peripheral side of the cylindrical bracket and caulking and fixing the side plate to the cylindrical bracket. It is fixed to the state.

  Further, the circumferential displacement of the elastic body is regulated by forming circumferential stoppers located on both sides in the circumferential direction of the pressure contact portion of the elastic body on the cylindrical bracket as in claim 2. You can also. Moreover, in the case of disposal, if the caulking of the side plate is released, the elastic body can be easily removed.

  According to the cylindrical mount according to the first or second aspect of the present invention, in the manufacture thereof, the elastic body can be easily incorporated at a predetermined position in the cylindrical bracket, and thus the manufacture is facilitated. In addition, since the elastic body can be easily removed at the time of disposal, resource recycling by separating and collecting the cylindrical bracket and the caulking member becomes possible.

  1 is a perspective view showing a preferred embodiment of a cylindrical mount according to the present invention, FIG. 2 is a partial cross-sectional view taken along the position of arrow II in FIG. 1, and FIG. 3 is a cylindrical mount of FIG. FIG. 4 is a perspective view for explaining the movement of the caulking member, and FIG. 5 is a perspective view showing a state in which an elastic body is press-fitted into the cylindrical bracket of FIG. is there.

  The cylindrical mount of this embodiment is used as, for example, an engine mount of an automobile. As shown in FIG. 1, an inner cylinder 1 connected to the engine side which is a supported body, and the inner cylinder 1 A cylindrical bracket 2 that is disposed on the outer peripheral side of the inner cylinder 1 and connected to the vehicle body frame side that is a support, an elastic body 3 that is provided on the outer periphery of the inner cylinder 1 and press-fitted into the inner periphery of the cylindrical bracket 2, and a cylindrical shape And a caulking member 4 attached to the bracket 2 so as to be displaceable.

  The inner cylinder 1 is manufactured by cutting a metal pipe such as a steel pipe. On the other hand, the cylindrical bracket 2 is made of an iron-based metal material such as stainless steel, and is integrally formed with the cylindrical main body 21 and the outer peripheral surface of the cylindrical main body 21 by welding (not shown). The first flange 22 is provided, and a pair of second flanges 23 are integrally provided by welding Wd at both axial ends of the cylindrical main body 21. The first flange 22 and the second flange 23 are provided with mounting holes 22a and 23a for inserting mounting bolts (not shown), respectively.

  The elastic body 3 is made of a rubber-like elastic material, and is integrally vulcanized (vulcanized and bonded) to the outer peripheral surface of the inner cylinder 1. Specifically, the elastic body 3 includes a base portion 31 in which the inner cylinder 1 is joined and integrated in an embedded state, and extends from the base portion 31 to both sides of the inner cylinder 1 in a direction perpendicular to the axis thereof, and a tip is a cylindrical bracket. A pair of elastic legs 32 that are press-contacted to the inner peripheral surface of the inner cylinder 1, and extend from the base 31 to both sides of the inner cylinder 1 in a direction perpendicular to the axis and the elastic legs 32, and the tip is inside the cylindrical bracket 2. It has a pair of elastic stoppers 33 facing the peripheral surface with an appropriate distance.

  The elastic leg 32 extends in a direction intersecting with the vibration input direction Vb shown in FIG. 1 at a predetermined angle, and the protruding direction of the elastic stopper 33 substantially coincides with the vibration input direction Vb.

  As shown in FIGS. 3 and 4, the caulking member 4 is formed continuously from the first flange 22, that is, made of an iron-based metal material, such as stainless steel, and the like. It is integrally attached to the cylindrical bracket 2 (cylindrical main body 21) via the flange 22. The caulking member 4 extends from the first flange 22 and can be elastically deformed (or plastically deformed), and substantially corresponds to the outer peripheral surface of the tubular body 21 of the tubular bracket 2 extending from the neck 41. It consists of a curved plate 42 extending with a curvature and a pair of side plates 43 extending from both sides in the axial direction to the inner peripheral side.

  The side plates 43 of the caulking member 4 are located on both sides in the axial direction of the pressure contact portion with the one elastic leg portion 32 of the elastic body 3 in the cylindrical main body 21 of the cylindrical bracket 2, and the inner peripheral portion 43a thereof is As shown in FIG. 2, the cylindrical main body 21 protrudes to the inner peripheral side and is crimped to the elastic leg 32 side. As a result, the crimping member 4 is fixed in a state where the curved plate 42 is superposed on the outer peripheral surface of the cylindrical main body 21 of the cylindrical bracket 2, and the elastic leg portion 32 of the side plate 43 is fixed by the inner peripheral portion 43 a. The tip is fixed from both axial sides.

  A pair of cutout portions 21a and 21b are formed at both ends in the axial direction of the cylindrical main body 21 of the cylindrical bracket 2, and the side plate 43 of the caulking member 4 and the fixed side plate 24 of the second flange 23 are The cutout portions 21a and 21b are fitted.

  Each of the pair of second flanges 23 in the cylindrical bracket 2 has a fixed side plate 24 integrally therewith. The fixed side plates 24 are located on both sides in the axial direction of the pressure contact portion with the other elastic leg portion 32 of the elastic body 3 in the cylindrical main body 21 of the cylindrical bracket 2, that is, facing the side plate 43 of the caulking member 4. The inner peripheral edge 24a of the cylindrical bracket 2 protrudes toward the inner peripheral side of the cylindrical main body 21. The inner peripheral edge 24a of the cylindrical bracket 2 protrudes toward the inner peripheral side.

  The cylindrical main body 21 of the cylindrical bracket 2 is provided with a pair of circumferential stoppers 25 which are driven out to the inner circumferential side at positions where the pressure contact portions with the elastic leg portions 32 of the elastic body 3 are sandwiched from both circumferential sides. A total of four protrusions are provided (only a part is shown in the figure). The circumferential stopper 25 may be configured not by such a projecting projection shape but by making the cylindrical body 21 bend at both sides in the circumferential direction of the pressure contact portion with the elastic leg portion 32. .

  In the cylindrical mount configured as described above, the elastic body 3 is integrally vulcanized (vulcanized and bonded) to the inner cylinder 1 with a rubber-like elastic material. The elastic leg portion 32 in the elastic body 3 is formed to have a required tightening margin with respect to the inner peripheral surface of the cylindrical main body 21 of the cylindrical bracket 2. On the other hand, as shown in FIG. 3, the cylindrical bracket 2 includes a cylindrical main body 21, a first flange 22, a caulking member 4 extending to the first flange 22, and a second flange 23 integrated by welding or the like. Manufactured in a state.

  When assembling, as shown in FIG. 3, the caulking member 4 is previously separated from the outer peripheral surface of the cylindrical main body 21 of the cylindrical bracket 2 and the inner peripheral portion 43a of the side plate 43 is cylindrical. It is displaced to a position that does not hang on the inner periphery of the main body 21. In this state, as shown in FIG. 5, the elastic body 3 integrally having the inner cylinder 1 is inserted into the inner periphery of the cylindrical main body 21.

  In the process of incorporating the elastic body 3 into the inner periphery of the cylindrical main body 21 of the cylindrical bracket 2, first, the fixed side plate 24 of the second flange 23 fixed integrally with the cylindrical main body 21 is overtaken, and FIG. Between the pair of circumferential stoppers 25 located on the lower side in FIG. 5, which are formed between the fixed side plates 24, 24 by being punched into the cylindrical main body 21. insert. Next, the upper elastic leg portion 32 in FIG. 5 is positioned between the pair of circumferential stoppers 25 located on the upper side in FIG. insert.

  At this time, the distal end portion of the upper elastic leg portion 32 in FIG. 5 does not interfere with the inner peripheral portion 43 a of the side plate 43 in the caulking member 4, so that it is not necessary to greatly compress the elastic leg portion 32. For this reason, it can be easily press-fitted into the inner periphery of the cylindrical main body 21 of the cylindrical bracket 2 and is positioned between the circumferential stoppers 25, so that it can be incorporated with high accuracy.

  After the elastic body 3 is assembled as shown in FIG. 5, the caulking member 4 is oscillated and displaced so that the curved plate 42 is in close contact with the outer peripheral surface of the cylindrical body 21 of the cylindrical bracket 2. The inner peripheral portions 43a of the side plates 43 on both sides in the axial direction are projected to the inner periphery through the notches 21a of the cylindrical main body 21. Then, by bending and caulking the inner peripheral portion 43a of the side plate 43 toward the elastic leg portion 32 side of the elastic body 3 as shown in FIG. 2, the axial displacement of the tip of the elastic leg portion 32 is restricted. The assembly of the cylindrical mount shown in FIG. 1 is completed.

  The cylindrical mount according to this embodiment fixes the inner cylinder 1 to the engine side via a bolt (not shown) or the like inserted through the inner periphery thereof, and the cylindrical bracket 2 to the first flange 22 and the second flange. The engine is elastically supported on the vehicle body frame as an engine mount by being fixed to the vehicle body frame side via bolts (not shown) inserted through the mounting holes 22a and 23a of the flange 23.

  When engine vibration in the direction of the arrow Vb in FIG. 1 is input from the engine to the inner cylinder 1, the elastic leg portion 32 of the elastic body 3 is elastically repeatedly deformed thereby, so that the cylindrical bracket 2 side (vehicle body Transmission of vibration to the frame side) is effectively insulated, and vibration energy is converted into thermal energy by the internal friction of the rubber-like elastic material in the elastic leg 32, whereby the vibration is absorbed and damped.

  When the amplitude of the input vibration in the Vb direction becomes larger than a predetermined value, the elastic stopper 33 protruding in the Vb direction in the elastic body 3 comes into contact with the inner peripheral surface of the cylindrical main body 21 of the cylindrical bracket 2. Excessive deformation of the leg portion 32 is prevented, whereby the durability of the elastic leg portion 32 is maintained. Moreover, since the elastic stopper 33 is a part of the elastic body 3, the collision sound with the cylindrical main body 21 is effectively reduced.

  Further, when the cylindrical mount is to be discarded after long-term use, the bent inner peripheral portion 43a of the side plate 43 of the caulking member 4 is extended with an appropriate tool as shown by the broken line in FIG. Then, after the caulking state of the cylindrical bracket 2 to the cylindrical main body 21 is released, the caulking member 4 is placed on the outer periphery of the cylindrical main body 21 of the cylindrical bracket 2 as shown in FIG. While moving away from the surface, the inner peripheral portion 43a of the side plate 43 is displaced to a position where it does not hook on the inner periphery of the cylindrical main body 21. If it does in this way, since the elastic body 3 is non-adhesive with respect to the cylindrical bracket 2, it can remove easily. Therefore, it consists of the cylindrical bracket 2 (the cylindrical main body 21, the first flange 22, the second flange 23, and the caulking member 4) made of metal that can be recycled as a resource, and a rubber-like elastic material that is difficult to recycle. By separating the elastic body 3, waste reduction and resource recycling can be promoted.

It is a perspective view which shows preferable embodiment of the cylindrical mount which concerns on this invention. It is the fragmentary sectional view cut | disconnected by the arrow II position in FIG. It is a perspective view which shows the cylindrical bracket and the crimping member in the cylindrical mount of FIG. It is a perspective view for demonstrating the movement of a crimping member. It is a perspective view which shows the state which press-fit the elastic body in the cylindrical bracket of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner cylinder 2 Cylindrical bracket 21 Cylindrical main body 21a, 21b Notch 22 1st flange 23 2nd flange 24 Fixed side plate 25 Circumferential direction stopper 3 Elastic body 31 Base part 32 Elastic leg part 33 Elastic stopper 4 Caulking member 41 Neck part 42 Curved plate 43 Side plate

Claims (2)

  An inner cylinder (1), a cylindrical bracket (2) disposed on the outer peripheral side of the inner cylinder (1), and an inner periphery of the cylindrical bracket (2) provided on the outer periphery of the inner cylinder (1) An elastic body (3) made of a rubber-like elastic material press-fitted into the cylinder, and a crimping member (4) attached to the cylindrical bracket (2) so as to be displaceable. The crimping member (4) includes the cylinder A side plate (43) that protrudes into the inner periphery of the cylindrical bracket (2) and restricts the axial displacement of the elastic body (3) is formed by being caulked and fixed to the shaped bracket (2). Cylindrical mount.   The cylindrical mold according to claim 1, characterized in that a circumferential stopper (25) is formed on the cylindrical bracket (2) on both sides in the circumferential direction of the pressure contact portion with the elastic body (3). mount.

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