JPH07227724A - Method and device for mounting tubular elastic member on rod-shaped body - Google Patents

Abstract

(57) [Abstract] [Purpose] A rod-shaped body such as a footrest bar that can be easily and surely inserted into a tubular elastic member such as a trim, which can significantly reduce the burden on the operator and improve work efficiency. A method and apparatus for attaching a tubular elastic member to a body are provided. When the rod-shaped footrest bar 1 is inserted from one end of a trim 2 which is a tubular elastic member, air 10 from an air supply device 11 is press-fitted from the other end of the trim 2 so that the inner diameter of the trim 2 is reduced. The footrest bar 1 is pushed into the trim 2 by the pressing device 5 while slightly increasing the amount, and the trim 2 is attached to the footrest bar 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for mounting a tubular elastic member on a rod-shaped body.

[0002]

2. Description of the Related Art In automobiles, a passenger may be equipped with a footrest, and the footrest has a rod-shaped outer periphery of a footrest bar having a bracket fixed to the base end and a bolt portion formed at the tip. Attach a trim that is a tubular elastic member such as rubber to the surface, insert the bolt part at the tip of the footrest bar equipped with the trim into a bracket fixed to the floor of the passenger seat, and tighten it with a nut. It has a structure in which a bracket at the base end of the bar is attached to a required position on the floor of the passenger seat.

In general, when the trim rotates with respect to the footrest bar, the foot placed on the trim becomes unstable. Therefore, it is necessary to fit the trim to the footrest bar quite tightly. For this reason, the inner diameter of the trim is made slightly smaller than the outer diameter of the footrest bar.

Since the trim is a tubular elastic member made of rubber or the like and has a poor sliding property and a large frictional resistance, the work of mounting the trim on the footrest bar is performed by the operator on the outer peripheral surface of the footrest bar and the inner surface of the through hole of the trim. The footrest bar was inserted while being screwed into the trim with water applied and the frictional resistance of the footrest bar against the trim minimized.

[0005]

However, even if soap water is applied to the outer peripheral surface of the footrest bar and the inner surface of the through hole of the trim when the operator inserts the footrest bar into the trim while screwing the footrest bar into the trim as described above, it does not work against the trim. Although the frictional resistance of the footrest bar is small, the burden on the operator is very heavy and the labor is heavy and the working time is 3
It takes a very long time of about 0 minutes and work efficiency is poor, and in some cases it is impossible to screw the footrest bar into the trim on the way, so it is unavoidable to cut the trim and use a new trim again. Sometimes it disappeared.

In view of such circumstances, the present invention can easily and surely insert a rod-shaped body such as a footrest bar into a tubular elastic member such as a trim, which can significantly reduce the burden on the operator and improve the working efficiency. An object of the present invention is to provide a method and apparatus for mounting a tubular elastic member on a rod-shaped body that can be improved.

[0007]

According to the present invention, when a rod-shaped body is inserted from one end of a tubular elastic member, air is press-fitted from the other end of the tubular elastic member to increase the inner diameter of the tubular elastic member by a small amount. The present invention relates to a method for mounting a tubular elastic member on a rod-shaped body, characterized in that the tubular elastic member is mounted on the rod-shaped body by pushing the rod-shaped body into the tubular elastic member.

Further, according to the present invention, a fixing jig for supporting the tubular elastic member, and the rod-shaped body in the axial direction for inserting the rod-shaped body from one end of the tubular elastic member supported by the fixing jig. The present invention relates to a device for mounting a tubular elastic member on a rod-shaped body, which is equipped with a pressing device for moving and an air supply device for pressurizing air from the other end of the tubular elastic member.

[0009]

Therefore, in the method of mounting the tubular elastic member on the rod-shaped body according to the present invention, when the rod-shaped body is inserted from one end of the tubular elastic member, air is forced into the other end of the tubular elastic member to cause tubular elasticity. Since the pressure inside the member increases and the inner diameter of the tubular elastic member increases by a small amount, the frictional resistance of the rod-shaped body against the tubular elastic member is reduced, and at the same time the rod-shaped body is pushed into the tubular elastic member by the required amount, Air inside the tubular elastic member leaks from the slight gap created between the tubular elastic member and the rod-shaped body, the inner diameter of the tubular elastic member returns to its original value, and the frictional resistance of the rod-shaped body against the tubular elastic member increases, and the insertion operation Is stopped for a moment, but since air is continuously supplied to the tubular elastic member, the pressure in the tubular elastic member rises again,
The inner diameter of the tubular elastic member increases by a small amount, the frictional resistance of the rod-shaped body against the tubular elastic member is reduced, and the rod-shaped body is pushed into the tubular elastic member by a required amount, and at the same time, between the tubular elastic member and the rod-shaped body. Air in the tubular elastic member leaks from the slight gap generated in the, and the same operation as described above is repeated,
The insertion of the rod-shaped body into the tubular elastic member is completed.

Further, in the apparatus for mounting the tubular elastic member on the rod-shaped body of the present invention, when the tubular elastic member is mounted on the rod-shaped body, the tubular elastic member is supported by the fixing jig and the rod-shaped member is pushed by the pressing device. When the tip of the body is inserted from one end of the tubular elastic member and air of a required pressure is supplied into the tubular elastic member from the air supply device, the pressure in the tubular elastic member rises and the inner diameter of the tubular elastic member increases. The frictional resistance of the rod-shaped body to the tubular elastic member is reduced by a small amount, and the rod-shaped body is pushed into the tubular elastic member by a required amount, and at the same time, a small amount of force is generated between the tubular elastic member and the rod-shaped body. The air inside the tubular elastic member leaks through such a gap, the inner diameter of the tubular elastic member returns to its original value, the frictional resistance of the rod-shaped body against the tubular elastic member increases, and the insertion operation stops momentarily, but there is no empty space in the tubular elastic member. Since the air is continuously supplied from the supply device, the pressure in the tubular elastic member rises again, the inner diameter of the tubular elastic member increases by a small amount, and the frictional resistance of the rod-shaped body against the tubular elastic member is reduced. At the same time that the body is pushed into the tubular elastic member by a required amount, air in the tubular elastic member leaks from a slight gap formed between the tubular elastic member and the rod-shaped body, and the same operation as described above is repeated. The insertion of the rod-shaped body into the tubular elastic member is completed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show one embodiment of the present invention, in which 1 is a footrest bar which is a rod-like member having a bracket 1a fixed to the base end and a bolt 1b formed at the tip. It is a trim that is a tubular elastic member such as rubber,
A fixing jig 4 for supporting the trim 2 is installed on the processing table 3, and the footrest bar 1 is attached to the footrest bar 1 in order to insert the footrest bar 1 from one end of the trim 2 supported by the fixing jig 4. A pressing device 5 such as an air cylinder that moves in the direction is installed.

The fixing jig 4 comprises a clamp base 4a fixed on the working table 3 and a holding member 4b pivotally attached to the clamp base 4a so as to be opened and closed by operating a clamp lever 6. The clamp base 4a and the pressing member 4b each have a concave groove 4c that substantially conforms to the outer diameter shape of the trim 2 so that the trim 2 can be accommodated when the pressing member 4b is closed. , 4d are formed.

At the end of the clamp base 4a of the fixing jig 4, an attachment nozzle 7 which can be airtightly connected to the other end of the trim 2 is attached, and a regulator 8 is attached to the attachment nozzle 7. An air supply device 11 for connecting a pressure source 9 such as an air tank via the other end of the trim 2 to press-in the air 10 is formed.

In the figure, 12 is a regulator provided in the middle of the air pipe connecting the pressing device 5 and the pressure source 9 and for adjusting the pressure of the air supplied to the pressing device 5, 13
Is a supporting tool that can be switched between a position projecting on the working table 3 to support the footrest bar 1 and a position buried in the working table 3, and 14 is an operating piece 15 attached to the tip of the pressing device 5. Is a limit switch, which is turned on when the actuating piece 15 passes through so as to bury the support tool 13 in the working table 3, 16 is a start switch, and 17 is a stop switch.

When mounting the trim 2 on the footrest bar 1, the footrest bar 1 is set on the support 13 while the pressing device 5 is contracted, and the clamp base of the opened fixing jig 4 is mounted. The trim 2 is set on the 4a so that its end is connected to the attachment nozzle 7, and the pressing member 4b is closed and locked by the clamp lever 6, and then the start switch 16 is pressed. Air of a required pressure is supplied to the pressing device 5 through the pressurizing device 5 and the pressing device 5 is extended, the tip end portion of the footrest bar 1 is inserted from one end portion of the trim 2, and the pressure source 9 and the regulator 8 and the attachment are attached. Air 10 having a required pressure is supplied into the trim 2 through the nozzle 7.

With the tip of the footrest bar 1 inserted from one end of the trim 2 and the one end of the trim 2 being closed, air of a required pressure is supplied from the pressure source 9 through the regulator 8 and the attachment nozzle 7. When 10 is supplied into the trim 2, the pressure in the trim 2 increases and the trim 2
Since the inner diameter of the footrest bar increases by a small amount, the frictional resistance of the footrest bar 1 to the trim 2 is reduced, and the footrest bar 1 is pushed into the required amount of the trim 2, and at the same time, the footrest bar 1 is generated between the trim 2 and the footrest bar 1. The air in the trim 2 leaks through the slight gap.

Therefore, the inner diameter of the trim 2 is returned to its original value, and the frictional resistance of the footrest bar 1 with respect to the trim 2 is increased,
Although the inserting operation is stopped for a moment, the pressure 10 inside the trim 2 continues to be supplied with the air 10 of the required pressure from the pressure source 9 through the regulator 8 and the attachment nozzle 7, so that the pressure inside the trim 2 rises again. However, the inner diameter of the trim 2 is slightly increased, the frictional resistance of the footrest bar 1 to the trim 2 is reduced, and the footrest bar 1 is pushed into the required amount of the trim 2, and at the same time, the trim 2 and the footrest bar 1 are separated from each other. Air in the trim 2 leaks from a slight gap generated therebetween, and thereafter, the same operation as described above is repeated, and the insertion of the footrest bar 1 into the trim 2 is completed.

During the insertion of the footrest bar 1 into the trim 2, the bracket 1a attached to the base end of the footrest bar 1 is
When reaching the position projecting on the processing table 3, the limit switch 14 is pressed by the operating piece 15 attached to the tip of the pressing device 5, and the support tool 13 is moved to the processing table 3
Since it is buried inside, the bracket 1a does not interfere with the support 13, and the footrest bar 1 can be smoothly inserted into the trim 2.

After the insertion of the footrest bar 1 into the trim 2 is completed, when the stop switch 17 is pressed, the pressing device 5 is contracted, the air supply to the trim 2 is stopped, and the clamp lever 6 fixes the fixing. When the holding member 4b of the tool 4 is opened, the trim 2 having the footrest bar 1 inserted therein can be taken out.

In this embodiment, the footrest bar 1
The work time required to attach the trim 2 to the
Very short, about 5 seconds.

Thus, the footrest bar 1 is attached to the trim 2.
Can be easily and surely inserted, the burden on the operator can be greatly reduced, and the working efficiency can be improved.

The method and apparatus for mounting the tubular elastic member on the rod-shaped body of the present invention are not limited to the above-mentioned embodiments, and various modifications can be made without departing from the scope of the present invention. Of course.

[0024]

As described above, according to the method and apparatus for mounting the tubular elastic member on the rod-shaped body of the present invention, the rod-shaped body such as the footrest bar can be easily and surely inserted into the tubular elastic member such as trim. Therefore, it is possible to significantly reduce the burden on the operator and to improve the working efficiency.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the principle of an embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of the device of the present invention.

[Explanation of symbols]

 1 Footrest bar (bar-shaped body) 2 Trim (tubular elastic member) 4 Fixing jig 5 Pressing device 10 Air 11 Air supply device

Claims (2)

[Claims] 1. When the rod-shaped body is inserted from one end of the tubular elastic member, air is press-fitted from the other end of the tubular elastic member to increase the inner diameter of the tubular elastic member by a small amount, while the rod-shaped member is rod-shaped. A method for mounting a tubular elastic member on a rod-shaped body, comprising: mounting a tubular elastic member on the rod-shaped body by pushing the body. 2. A fixing jig for supporting the tubular elastic member, and a pressing device for moving the rod-shaped body in its axial direction to insert the rod-shaped body from one end of the tubular elastic member supported by the fixing jig. And a device for mounting a tubular elastic member on a rod-shaped body, comprising: an air supply device for pressurizing air from the other end of the tubular elastic member.