JPH07186064A - Jig for changing vibration isolating device - Google Patents

Abstract

PURPOSE:To improve operability while facilitating the operation of changing a vibration isolating device by interconnecting a receiving member and press member applied to sandwich the vibration isolating device through a guide shaft piercing both members and displacing both members by rotating a nut screwed on the shaft. CONSTITUTION:In the test and change of a vibration isolating device, a guide shaft 23 is inserted into an inner tube 3 after a shaft, bolt or the like are removed from an inner tube 3 of the vibration isolating device incorporated in the car body side. After a receiving member 21 and press member 22 for sandwiching the vibration isolating device from both sides are fitted to the guide shaft 23, nuts 24 are screwed on the shaft 23 from both end sides, and the receiving member 21 and press member 22 are adapted to abut against an outer tube 2 respectively by the respective nuts 24 abutting against the receiving member 21 and press member 22. Both members 21, 22 are adapted to approach each other by screwing the nuts 24 with a spanner or the like to slide the vibration isolating device for drawing it out of a mounting part 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exchange jig for exchanging vibration damping devices such as mounts and bushes used in automobiles and general industrial machines, which are fitted to a cylindrical mounting portion of a bracket. The present invention relates to an exchange jig for exchanging the attached anti-vibration device.

[0002]

2. Description of the Related Art Generally, in an automobile, in order to block transmission of vibrations or noises from a drive system or a suspension system to a body on which a person rides, a body and a drive system are mounted via a vibration isolator made of rubber or the like. , It is connected to the suspension system. For example, as shown in FIG. 1, the vibration isolator 1 includes a cylindrical outer cylinder 2, and an inner cylinder 3 is arranged inside the outer cylinder 2 in parallel with the outer cylinder 2. A shaft, a bolt, and the like are inserted into the inner cylinder 3, and the inner cylinder 3 is connected to either one of the vibration generating portion and the vibration receiving portion (an example is an automobile engine). An elastic body 4 is laid between the outer cylinder 2 and the inner cylinder 3, and the elastic body 4 is vulcanized and bonded to the outer peripheral surface of the inner cylinder 3 and a part of the inner peripheral surface of the outer cylinder 2, respectively. There is. Reference numeral 5 denotes a bracket, which is formed of a cylindrical portion 6 and a mounting arm 7, and the vibration isolator main body 1 is press-fitted and fixed in the cylindrical portion 6. The mounting arm 7 is attached to the other of the vibration generating portion and the vibration receiving portion (the vehicle body of an automobile, for example) by a bolt hole 8.

By the way, in the development and trial production stage of such an antivibration device, the device is actually mounted on an automobile for testing in order to measure its characteristics and durability. This measurement is carried out by sequentially exchanging a plurality of devices on one automobile, and at the time of the exchange, the jig 10 shown in FIG. 2 is used. That is, the jig 10 presses the anti-vibration device 1 in order to extract the anti-vibration device 1 from the bracket 5 and the bottomed cylindrical receiving member 11 that houses the anti-vibration device 1 removed from the bracket 5. And a pressing member 12. Then, the antivibration device 1 and the mounting portion 6 of the bracket 5 are sandwiched between the antivibration device 1, and the receiving member 11 and the pressing member 12 are further sandwiched by the shrimp vise 13 to operate the shank vise 13. By doing so, the vibration isolation device 1 is pulled out. The shrimp vise 13 has a C-shaped main body 14, a female screw portion 15 formed at one end thereof is inserted with a shaft 16 formed in a male screw shape, and a handle 17 is provided at one end of the shaft 16.
Is provided. In addition, the other end of the shaft has a contact portion 18
The contact portion 18 and the contact portion 19 formed at the other end of the C-shaped main body 14 are brought into contact with the pressing member 12 and the receiving member 11, respectively. Then, when the handle 17 is rotated, the shaft 16 is screwed forward, and the abutting portion 18 pushes the pressing member 11 to remove the vibration isolator 1 from the mounting portion 6 of the bracket 5.

[0004]

However, in such a conventional technique, a shrimp vise 13 must be used in addition to the jig 10, and since the shrimp vise 13 is generally large, it is relatively small. There is a problem that workability is remarkably impaired in a workplace such as a measurement room and the workplace becomes complicated. Further, since the receiving member 11 and the pressing member 12 are simply applied to the vibration isolator 1 and the bracket 5 and abutted by the abutting portions 18 and 19 of the shrimp vise 13 to support them, the force of the operator can be adjusted. In some cases, the vise 13 or the members 11 and 12 come off and fall off. An object of the present invention is to solve the above-mentioned problems of the prior art, and to improve the workability with a simple structure, and to provide a replacement jig for an anti-vibration device that enables reliable replacement work. To provide.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a cup-shaped receiving member, a pressing member having a pressing portion arranged to face the opening of the receiving member, and a screw having the receiving member and the pressing member mounted thereon. A grooved guide shaft, and a nut screwed to at least one end of the guide shaft and configured to come into contact with one of the receiving member and the pressing member from the end of the guide shaft. It is a replacement jig for a vibration isolation device.

[0006]

According to the above configuration of the present invention, the receiving member and the pressing member, which are sandwiched by the vibration isolator, are connected to the guide shaft by being annularly mounted, and the nut screwed to the guide shaft is attached. By rotating with a spanner or the like, the receiving member and the pressing member are relatively displaced along the guide shaft.

[0007]

EXAMPLES Hereinafter, more specific examples will be described.

FIG. 3 shows an embodiment of the present invention. In FIG. 3, the vibration isolator 1 is fitted to the mounting portion 6 of the bracket 5, and is fixed to the vehicle body side via a mounting arm 7. The jig 20 has a cup-shaped receiving member 21 having a bottomed cylindrical peripheral wall, and the receiving member 21 can accommodate the vibration isolator 1 removed from the bracket 5. Further, the pressing member 22 is arranged at a position facing the receiving member 21 with the vibration isolator 1 interposed therebetween. This pressing member 22 is a bracket 5
The vibration isolator 1 can be pressed to remove the pressing member 22 fitted to the. Central through holes are formed in the receiving member 21 and the pressing member 22, and a guide shaft 23 is arranged so as to penetrate these central through holes. The guide shaft 23 is provided with a screw groove, and the nut 24 is screwed from both short side portions of the guide shaft 24. When the nut 24 abuts the receiving member 21 and the pressing member 22 from the end side, both members are applied to the vibration isolator 1 and the mounting portion 6 of the bracket 5. The receiving member 21 has a larger inner diameter than the outer cylinder 2 of the vibration isolator 1, and is configured to be capable of contacting the end surface of the cylindrical portion 6 of the bracket 5. Further, the pressing member 22 is the cylindrical portion 6 of the bracket 5.
The inner diameter of the outer cylinder 2 is smaller than the inner diameter of the outer cylinder 2.

The operation of this exchange jig will be described below.
From the inner cylinder 3 of the vibration isolator 1 mounted on the vehicle body side, the shaft and bolts inserted therein are removed. In this state,
The guide shaft 23 is passed through the inner cylinder 3, and the vibration isolation device 1
A receiving member (21) and a pressing member (22) are mounted on a guide shaft (23) from both sides by sandwiching. From this further end side nut 2
Screw 4 and 24. By contacting the nuts 24, 24 with the receiving member 21 and the pressing member 22, the receiving member 21 is brought into contact with the mounting portion 6 and the pressing member 22 is brought into contact with the outer cylinder 2. Then, when the nuts 24, 24 are further tightened and screwed with a wrench or the like, the receiving member 21 and the pressing member 22 relatively come close to each other. Therefore, the pressing member 22 that is in contact with the outer cylinder 2 enters the mounting portion 6, and accordingly, the vibration damping device 1 is slid and removed from the mounting portion 6.

FIG. 4 shows another embodiment of the exchange jig according to the present invention. In this example, the jig 30 is
A cup-shaped receiving member 31 capable of accommodating the anti-vibration device 1 removed from the bracket 5, a pressing member 32 arranged so as to face the receiving member 31, and a guide shaft that surrounds the receiving member 31 and the pressing member 32. It has 33 and. Here, the guide shaft 33 is formed integrally with the receiving member 31, and is erected from the center of the bottom surface of the receiving member 31. Then, the central through hole of the pressing member 32 is inserted, and the nut 34 is screwed from the tip side thereof. Also in this example, the nut 24 is rotated by a spanner or the like to be screwed, the pressing member 34 is pushed into the mounting portion 6, and the vibration isolator 1 is removed.

The present invention is not limited to the above-mentioned embodiment. For example, the present invention can be used not only for removing the vibration isolator but also for fitting the vibration isolator to the bracket. It is possible.

[0012]

As described above, the present invention provides a replacement jig which has a simple structure, is small in size, improves workability, and enables reliable replacement work by the structure described in the claims. it can.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of a background art of the present invention.

FIG. 2 is a vertical sectional view of a vibration isolator and a jig in a conventional example.

FIG. 3 is a vertical cross-sectional view of a vibration isolator and a jig showing an embodiment of the present invention.

FIG. 4 is a vertical sectional view of a vibration isolator and a jig showing another embodiment of the present invention.

[Explanation of symbols]

 1 Anti-vibration device 5 Bracket 21,31 Receiving member 22,32 Pressing member 23,33 Guide shaft 24,34 Nut

Claims (1)

[Claims] 1. A cup-shaped receiving member, a pressing member having a pressing portion arranged to face an opening of the receiving member, a guide shaft with a screw groove in which the receiving member and the pressing member are mounted, and the guide. A vibration-damping device including a nut that is screwed onto at least one end of the shaft and is configured to come into contact with one of the receiving member and the pressing member from the end of the guide shaft. Replacement jig.