JP2591673Y2 - Stopper and extractor for rubber bushing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper and a removal tool for a cylindrical rubber bushing device used for a bus suspension device and the like, and more particularly to a technique for improving the productivity of the stopper and a removal tool. .

[0002]

2. Description of the Related Art Conventionally, in a bus suspension device or the like, a cylindrical rubber bush device interposed between a rod and a link has been known. As shown in FIG. 3, the rubber bush device 1 includes a cylinder 4 fitted on an outer peripheral surface of an end of a pin 3 provided at an end of a rod 2, and a cylindrical rubber mounted on the outer peripheral surface of the cylinder 4. It comprises a bush 5 and a cylindrical eyeball portion 6 provided at the link end and mounted on the outer peripheral surface of the rubber bush 5.

Conventionally, after the rubber bush device 1 is attached to the end of the pin 3, a stopper 7 is provided to prevent the rubber bush device 1 from being detached from the end of the pin 3. . As shown in FIG. 3, the stopper 7 is formed on a bottomed cylindrical stopper plate 8 which is screw-fitted to the outer periphery of the cylinder 4 at the end of the pin 3, and formed on the end wall of the stopper plate 8. A bolt 1 for fastening a stopper plate that is inserted into an insertion hole 9 and fitted into a screw hole 10 formed at an end of the pin 3.
The rubber bush device 1 is fixed to the end of the pin 3 by fixing the stopper plate 11, which is composed of the screw member 1 and screwed to the cylinder 4, and fixed to the end of the pin 3 with the bolt 11. I have.

[0004] Conventionally, a rubber bush device 1 has a pin 3
An extractor 12 for extracting from the end is provided.
As shown in FIG. 4, the extraction tool 12 is formed on a bottomed cylindrical extraction plate 13 which is screw-fitted around the end of the cylinder 4 at the end of the pin 3, and formed on an end wall of the extraction plate 13. For removing a stopper plate having a male screw part 15 fitted into the screw hole 14 on the head side and a small-diameter shaft part 16 locked on the bottom part of the screw hole 10 formed at the end of the pin 3 on the distal end side. And the removal plate 13 screw-fitted to the cylinder 4 is slid by the rotation of the bolt 17,
The rubber bush device 1 is pulled out from an end of the pin 3.

[0005]

However, as described above, the stopper 7 and the removal tool 1 of the rubber bush device 1 are as described above.
The configuration provided with 2 has the following problems. That is, in the conventional configuration, it is necessary to provide the stopper 7 and the extraction tool 12, which increases the number of parts, increases the manufacturing cost, and the like. When the rubber bush device 1 is extracted from the end of the pin 3, After removing the stopper 7, it is necessary to use the extraction tool 12, which is inferior in extraction workability.

In addition, in the conventional configuration, it is necessary to perform threading on the outer peripheral surface of the cylinder 4, which increases the manufacturing cost associated with the threading, and providing a screw fitting portion on the outer peripheral surface side of the cylinder 4 is also preferable from the viewpoint of rust prevention. Absent. In view of the above, the present invention has been made in view of the above, and aims to improve the manufacturability of a stopper and a removal tool of a cylindrical rubber bush device used for a bus suspension device and the like, and to reduce the manufacturing cost at a low cost. ,
The purpose is to improve the workability of sampling.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a cylinder fitted to an outer peripheral surface of a pin end, a cylindrical rubber bush mounted on the cylindrical outer peripheral surface, and an outer peripheral surface of the cylindrical rubber bush. A stopper for a rubber bushing device comprising a cylindrical eyeball portion mounted on a pin, a bottomed cylindrical stopper plate fitted on the outer periphery of the cylindrical end at the pin end, and a peripheral wall of the stopper plate A plurality of bolts which are screw-fitted into screw holes formed at a plurality of positions and are locked in peripheral grooves formed on the outer peripheral surface of the pin, and which are inserted through insertion holes formed in an end wall of a stopper plate; a bolt for fastening stopper plate to the screw hole formed in the pin end portion is threaded fitting <br/>, male thread that is screw-fitted into the female screw hole formed in the insertion hole inner peripheral surface of the stop plate Part is fixed to the bottom of the screw hole formed at the end of the pin. A bolt for preventing plate extraction with respectively a shaft portion to the distal end side and configured to include.

[0008]

In this configuration, since the stopper and the removal tool of the rubber bushing device can be used in combination, the number of parts and the manufacturing cost can be reduced, and the rubber bushing device can be removed from the end of the pin. Is excellent in workability because only the bolt is replaced.

Conventionally, the stopper plate and the extraction plate were screw-fitted to the outer peripheral surface of the pin, so that there was a problem of an increase in cost due to the threading operation and rust of the screw fitting portion on the outer peripheral surface side of the cylinder. In the above configuration, the screw fitting portion between the stopper plate and the pin outer peripheral surface can be eliminated, so that the screw cutting operation can be eliminated, the cost can be reduced, and the problem of rust in the screw fitting portion can be solved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, a cylindrical rubber bush device 1 is shown.
Is a cylinder 4 fitted on an outer peripheral surface of an end of a pin 3 provided at an end of a rod 2, a cylindrical rubber bush 5 mounted on an outer peripheral surface of the cylinder 4, and a cylindrical bush 5 provided on a link end. It is the same as the related art in that the rubber bush 5 and the cylindrical eyeball portion 6 mounted on the outer peripheral surface are provided.

As shown in FIG. 1, a stopper / extractor 20 of the rubber bushing device 1 has a bottomed cylindrical stopper plate 21 fitted around the outer periphery of the end of the cylinder 4 at the end of the pin 3.
And screw holes 2 formed at a plurality of positions on the peripheral wall of the stopper plate 21.
2 and a plurality of bolts 24 which are engaged with a peripheral groove 23 formed on the outer peripheral surface of the pin 3 and which are inserted through an insertion hole 25 formed in an end wall of the stopper plate 21. a bolt 27 for fastening stop plate which is screw fitted into screw holes 26 formed in the end portion, as shown in FIG. 2, the stop plate 2
I into a female screw hole 25a formed in the inner peripheral surface 1 of the insertion hole 25
Flip a male screw portion 28 which is fitted on the head side, the small-diameter shaft portion 29 to be engaged into the screw hole 26 bottom portion formed on the pin 3 end
Bolts 30 for pulling out stop plates each having a front end side
And

The screw diameter of the bolt 24 is smaller than the inner width of the peripheral groove 23. In such a configuration, in order to fix the cylinder 4, that is, the rubber bush device 1 to the end of the pin 3 using the stopper plate 21, as shown in FIG. The bolt 24 is screwed into a screw hole 22 formed at a plurality of positions on the peripheral wall of the stopper plate 21 to be engaged with the peripheral groove 23 formed on the outer peripheral surface of the pin 3. Bolt 27 is inserted through an insertion hole 25 formed in the end wall of the stopper plate 21 and into a screw hole 26 formed at the end of the pin 3.
So as to screw fit. In this case, as shown in FIG. 1, a gap is formed between the outer peripheral surface of the screw portion of the bolt 24 and the inner peripheral surface of the peripheral groove 23, and the end surface of the cylinder 4 and the inner end surface of the stopper plate 21 are connected. Make contact.

In this manner, the rubber bush device 1 can be fixed to the end of the pin 3 by fixing the stopper plate 21 fixed to the cylinder 4 using the bolt 24 to the end of the pin 3 with the bolt 27. . On the other hand, to remove the cylinder 4, that is, the rubber bushing device 1 from the end of the pin 3 using the stopper plate 21, remove the bolt 27 from the stopper plate 21,
As shown in the figure, the small-diameter shaft portion 29 of the bolt 30 for removing the stopper plate is engaged with the bottom of the screw hole 26 formed at the end of the pin 3, and the male screw portion 28 is inserted into the insertion hole 25 of the stopper plate 21.
The inner peripheral surface which is formed in the female screw portion 25a is screw fitted, when rotating the bolt 30, stop plate 21 fixed by bolts 24 to the cylinder 4 is slid in the direction of the arrow in FIG. 2,
The rubber bush device 1 is withdrawn from the end of the pin 3.

In this case, as shown in FIG. 2, a part of the outer peripheral surface of the threaded portion of the bolt 24 and a part of the inner peripheral surface of the peripheral groove 23 are brought into contact with each other, and the end surface of the cylinder 4 and the stopper plate 21 A state is created in which there is a gap between the inner end face. The configuration of the stopper / extractor 20 of the rubber bush device 1 having such a configuration has the following advantages.

That is, it is not necessary to provide the stopper and the removal tool independently, so that the number of parts and the manufacturing cost can be reduced, and when the rubber bush device 1 is to be removed from the end of the pin 3. The workability is excellent because it is only necessary to replace the bolt 27 with the bolt 30. Also, cylinder 4
Since it is not necessary to perform thread cutting on the outer peripheral surface, the manufacturing cost associated with the thread cutting is not required, and no screw fitting portion is provided on the outer peripheral surface side of the cylinder 4, it is preferable in terms of rust prevention.

As described above, the present invention has been described with reference to the specific embodiments. However, the present invention is not limited to these embodiments, and is attached to the present invention by a person skilled in the art. It should be noted that various changes and modifications can be made without departing from the scope of the claimed utility model registration claim.

[0017]

As described above, the present invention provides a bottomed cylindrical stopper plate fitted around the outer periphery of a cylindrical end of a pin end of a rubber bushing device into which a cylinder is fitted, and a peripheral wall of the stopper plate. A plurality of bolts, which are screw-fitted into screw holes formed at a plurality of positions and are locked in a circumferential groove formed on the outer peripheral surface of the pin, and an insertion hole formed in an end wall of the stopper plate. a bolt for fastening stop plate is inserted through the screw fitting into the threaded hole formed in the pin end, male thread that is screw-fitted into the female screw hole formed in the insertion hole inner peripheral surface of the stop plate Parts on the head side, and bolts for removing stopper plates each having a small-diameter shaft part on the tip side that is locked to the bottom of the screw hole formed at the end of the pin. Reduction and production cost can be achieved, and the workability of extraction is excellent.
In addition, the screw cutting operation can be eliminated, the cost can be reduced, and the problem of rust at the screw fitting portion can be solved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a rubber bush device according to the present invention, showing a state in which a stopper is used as an embodiment of a stopper and extractor.

FIG. 2 is a cross-sectional view showing a state where the extractor of the embodiment is used.

FIG. 3 is a cross-sectional view of a stopper of a conventional rubber bush device.

FIG. 4 is a cross-sectional view of a removal tool of a conventional rubber bush device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rubber bushing device 3 Pin 4 Cylindrical 5 Rubber bush 6 Eyeball 20 Stopper / extractor 21 Stopper plate 22 Screw hole 23 Peripheral groove 24 Bolt 25 Insertion hole 26 Screw hole 27 Bolt for tightening stop plate 28 Male screw 29 Small diameter Shaft 30 Bolt for removing stopper plate

Claims (1)

(57) [Scope of request for utility model registration] 1. A cylinder fitted on an outer peripheral surface of a pin end portion, a cylindrical rubber bush mounted on the outer peripheral surface of the cylinder, and a cylindrical eyeball portion mounted on the outer peripheral surface of the cylindrical rubber bush. A stopper and a removal tool for the rubber bushing device,
A cylindrical stopper plate with a bottom fitted into the outer periphery of the cylindrical end of the pin end, and a peripheral groove formed on the outer peripheral surface of the pin by being screwed into screw holes formed at a plurality of positions on the peripheral wall of the stopper plate a plurality of bolts and bolt for fastening stop plate which is screw fitted into a threaded hole formed in the pin end is inserted into an insertion hole formed in an end wall of the stop plate to be engaged in, the Since it is formed on the inner peripheral surface of the insertion hole of the stopper plate, it is screwed into the screw hole
A male screw portion that is if the head side, and configured to include a bolt for preventing plate extraction with respectively distally the small-diameter shaft portion to be engaged into the screw hole bottom portion formed on the pin ends A stopper and a removal tool for a rubber bushing device.