KR19990035489A - Rear Disc Brake Piston Adjustable Jig - Google Patents

Abstract

The present invention relates to a rear disc brake piston adjusting jig that can easily mount a piston for compressing a pad to a disk, the handle 110 being able to be pushed while easily rotating the piston 10; A plate 120 installed at the handle 110 and having a fastening hole 121 formed at an edge thereof to form a distance corresponding to an interval of the hole 11 of the piston 10; A rear end 131 is fastened to the fastening hole 121 of the plate 120 and has a pointed tip 132 to facilitate insertion into the piston hole 11; Center rod 140 is installed in the center of the plate 120 so that the tip is in contact with the center of the piston 10 to the piston hole 11, the bar 130 can be fitted in the correct position. By inserting the bar into the piston hole to push the piston into the caliper housing, it can be easily rotated using the handle and pushed, and the correct use of the tool prevents damage to the piston due to pad maintenance and shortens working time. At the same time it is a very useful invention that can solve the difficulty of work.

Description

Rear Disc Brake Piston Adjustable Jig

The present invention relates to a rear disc brake, and more particularly, to a rear disc brake piston adjustment jig that can easily mount a piston for pressing a pad onto a disc.

In general, the rear disc brake has a caliper fixed to the backing plate through an adapter provided in the steering knuckle, and is also connected to the pad, the link and the lever to serve as the hand brake.

In the operation of the rear brake, when the brake pedal is first depressed, the hydraulic pressure generated in the master cylinder is transmitted to the caliber, and when the pressure is increased, the piston compresses the pad to the disk to generate braking force.

On the contrary, when the pedal is released, the piston is the elastic force of the seal so that the disc and the pad maintain the specified gap.

If the pad is worn and the amount of movement of the piston is greater than the limit of elastic deformation of the seal, perturbation deformation occurs between the seal and the piston and the piston sets a new position.

In other words, when the pedal is released, the pads and discs are always kept constant because the pistons return by the elastic deformation of the seal.

When the pad is worn as described above, the pad must be replaced, and after replacing the pad, the piston protruding from the caliper housing is pushed in.

Conventionally, when pushing the piston into the caliper housing, there was no separate tool for pushing the piston, and a long nose was used.

When the piston is pushed into the housing of the caliper using the long nose as described above, the long nose does not fit into the hole of the piston and opens, which causes the piston to be separated from the hole of the piston and damages the piston. There was a problem that takes a long time, and the difficulty of working.

An object of the present invention is to fasten the bar to both of the fastening holes of the plate installed in the handle that can be easily pushed while the piston is inserted into the piston hole, so that the bar can be fitted in the correct position when the piston hole is fitted The center rod is installed at the center of the plate. When the piston is inserted into the piston hole and the piston is pushed into the caliper housing, it can be easily rotated using the handle and pushed, and the correct use of the tool prevents damage to the piston due to pad maintenance. It is to provide a rear disc brake piston adjustment jig that can prevent, shorten the working time and solve the difficulty of the work.

1 is an exploded view of the rear disc brake;

Figure 2 is a side configuration of the rear disc brake piston adjustment jig according to the present invention.

3 is an exemplary embodiment of the present invention.

※ Explanation of symbols used in the main part of the drawing ※

110: handle 120: plate

121: fastener 130: bar

131: rear end 132: front end

140: center rod 141: guide rod

142: ball 143: movable rod

144: spring

The object of the present invention, the handle 110 to be pushed while easily rotating the piston 10;

A plate 120 installed at the handle 110 and having a fastening hole 121 formed at an edge thereof to form a distance corresponding to an interval of the hole 11 of the piston 10;

A rear end 131 is fastened to the fastening hole 121 of the plate 120 and has a pointed tip 132 to facilitate insertion into the piston hole 11;

Center rod 140 is installed in the center of the plate 120 so that the tip is in contact with the center of the piston 10 to the piston hole 11, the bar 130 can be fitted in the correct position. Is achieved by.

The fastening holes 121 of the plate 120 are formed in plural, and are formed in a quadrangular shape so as to be able to be adjusted at intervals corresponding to the holes of the piston 10 having different sizes according to the vehicle type.

The rear end 131 of the bar 130 is formed in a shape corresponding to the fastening hole 121 of the plate 120.

The center rod 140, the guide rod 141 is installed in the center of the plate 120, the ball 142 is installed at the tip of the movable rod 143 to be guided by the guide rod 141 Is installed, the rear end of the movable rod 143 is one end is coalesced in the spring 144 fixed to the plate 120.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a side configuration diagram of a rear disc brake piston adjustment jig according to the present invention, Figure 3 is an embodiment of the present invention.

As shown, after replacing the brake pad using the rear disc brake piston adjustment jig according to the present invention, the piston 10 pushed out of the caliper housing is pushed in.

When the operator grasps the handle 110 of the jig to the piston 10, the ball 142 installed at the tip of the movable rod 143 of the center rod 140 formed at the center of the plate 120 is in contact with the piston 10, When the jig is advanced in the piston 10 direction, the movable rod 143 is inserted into the guide rod 141 while receiving the elasticity of the spring 144.

As described above, at the same time as the movable rod 143 is inserted, the tip of the bar 130 fastened to the fastening hole 121 of the plate 120 is fitted to the piston hole 11.

The bar 130 is selectively fitted to the fastening hole 121 formed in the plate 120 according to the size of the piston.

In the state where the front end 132 of the bar 130 is fitted to the piston hole 11, while holding the handle 110, and is pushed at the same time.

The present invention as described above is not limited to the preferred embodiment of the above-described characteristics and various modifications can be made by those skilled in the art without departing from the gist of the present invention claimed in the claims. .

As described above, the rear disc brake piston adjustment jig according to the present invention is fastened to the piston hole by fastening the bars to both fastening holes of the plate installed in the handle that can be pushed while easily rotating the piston, and the bar is inserted into the piston hole. The center rod is installed at the center of the plate so that it can be inserted in the correct position when it is fitted. When the piston is inserted into the piston hole and the piston is pushed into the caliper housing, it can be easily rotated using the handle and pushed in. This is a very useful invention that can prevent the damage of the piston due to the pad maintenance, and to reduce the working time and at the same time solve the difficulty of the work.

Claims (4)

A handle 110 capable of being pushed while easily rotating the piston 10; A plate 120 installed at the handle 110 and having a fastening hole 121 formed at an edge thereof to form a distance corresponding to an interval of the hole 11 of the piston 10; A rear end 131 is fastened to the fastening hole 121 of the plate 120 and has a pointed tip 132 to facilitate insertion into the piston hole 11; Center rod 140 is installed in the center of the plate 120 so that the tip is in contact with the center of the piston 10 to the piston hole 11, the bar 130 can be fitted in the correct position. Rear brake piston adjustment jig characterized in that. The method of claim 1, wherein the fastening hole 121 of the plate 120 is formed in a plurality of quadrangular shape so as to be able to adjust at intervals corresponding to the piston 10 holes having different sizes according to the vehicle model Rear brake piston adjustment jig, characterized in that formed in. The rear brake piston adjustment jig according to claim 1, wherein the rear end (131) of the bar (130) is formed in a shape corresponding to the fastening hole (121) of the plate (120). According to claim 1, The center rod 140, the guide rod 141 is installed in the center of the plate 120, the ball 142 is installed at the tip to be guided by the guide rod 141 Movable rod 143 is provided, the rear end of the movable rod 143 is a rear brake piston adjustment jig, characterized in that the end is coalesced in the spring 144 fixed to the plate (120).