JPH0142673Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a piston extractor for an automobile disk brake caliper.

[Conventional technology]

When disassembling and servicing automobile disc brakes, it is necessary to remove the piston stored in the caliper. Conventionally, the piston is removed by placing the caliper on the floor or other surface and applying external force using an appropriate method. Not only was the removal process very troublesome and time-consuming, but the caliper and piston placed on the floor could become contaminated or damaged by mud or dust, and the caliper could be damaged. There was a problem in that the work environment, such as the floor surface, was easily contaminated by the leaking brake fluid.

[The problem that the idea attempts to solve]

The object of this invention is to provide a piston removal device that can easily and safely remove the piston without contaminating or damaging the caliper or piston, and without causing environmental pollution due to brake fluid flowing out from the caliper. It is about providing.

[Means to solve the problem]

In order to solve the above-mentioned problems, the piston extractor of the present invention has a cylindrical body that doubles as a support and a recovery pipe for recovering brake fluid flowing out from the caliper of an automobile disc brake, erected in a container containing brake fluid. A saucer for placing the caliper is attached to the top of the cylindrical body, and these containers and the saucer are communicated through a filter provided on the cylindrical body, and brake fluid is poured into the container by operating a hand bar. The present invention is characterized in that a piston pump is provided for sucking and sending liquid, and a removable elastic tube is connected to a discharge port of the piston pump to a connection port for a brake hose in the caliper.

[Effect]

Place the caliper removed from the automobile disc brake on a saucer, connect the elastic tube to the brake hose connection port of the caliper, and operate the push rod to supply the brake fluid in the container to the caliper. The pressure forces the piston out of the caliper and onto the saucer. At this time, the brake fluid inside the caliper is also pushed out, but this brake fluid
It is filtered by a filter and collected into a container through a cylinder.

In this way, the caliper and piston can be removed without placing them directly on the floor, and therefore without contaminating or damaging the caliper and piston, and the brake fluid being forced out of the caliper can be removed. Therefore, it does not cause environmental pollution.

〔Example〕

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

In FIG. 1, reference numeral 1 denotes a container containing brake fluid 2, which has an opening 3 that can be opened and closed by a stopper 4.
On the top surface of the container 1, a cylindrical body 5 that serves as a brake fluid collection pipe and a support is erected, and on the top of the cylindrical body 5 is a caliper 6 of an automobile disc brake (see Fig. 2). A saucer 7 for placing the container 1 is attached, and the container 1 and the saucer 7 are communicated with each other via a filter 8 provided on the cylindrical body 5.

Inside the container 1 is a piston pump 10 that sucks and feeds brake fluid 2 by operating a push rod 9 whose one end 9a is rotatably supported on the container 1.
is provided. The piston pump 10 includes a pump piston 1 which is slidably disposed within a cylinder tube 11 and whose upper end is pivotally connected to a push rod 9.
2, and a spring 14 that is always in the direction of closing the suction port 13.
A suction valve 15 is biased by a spring 15, and a discharge valve 18 is always biased by a spring 17 in a direction to close a discharge port 16. A threaded portion 22 is formed at the distal end of the elastic tube 19 to be detachably attached to a connecting port 21 of the brake hose 20 in the caliper 6.

In addition, 23 in FIG. 1 is a cover that covers the saucer 7, 24 in FIG. 2 is a disc of a disc brake, and 25
26 is a piston, and 27 is an air vent opening.

The piston extractor having the above configuration is used in the following manner. First, the caliper 6 removed from the automobile disc brake is placed on the tray 7, and the elastic tube 19 is connected to the connection port 21 for the brake hose 20 of the caliper 6. Then, when the hand rod 9 is operated to supply the brake fluid 2 in the container 1 to the caliper 6 by the piston pump 10,
The piston 26 moves from the caliper 6 to the saucer 7 due to hydraulic pressure.
pushed upwards. At this time, the brake fluid in the caliper 6 is also pushed out, but after being filtered by the filter 8, the brake fluid is
It is collected through the tank 1 and reused for hydraulic purposes.

[Effect of idea]

As described above, according to the piston extraction device of the present invention, the piston can be extracted from the caliper very easily and reliably by using the hydraulic pressure from the piston pump, and moreover, the piston can be removed from the caliper by placing it on the tray. This not only prevents the caliper and piston from coming into direct contact with the floor surface and causing contamination or damage due to mud or dust, but also
This has the advantage that the brake fluid forced out from the caliper does not cause environmental pollution.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a front view of an automobile disc brake. 1... Container, 2... Brake fluid, 5... Cylindrical body,
6...Caliper, 7...Saucer, 8...Filter,
9...Hand bar, 10...Piston pump, 16...
...Discharge port, 19...Elastic pipe, 20...Brake hose, 21...Connection port.

Claims (1)

[Scope of utility model registration request] A cylindrical body serving as a recovery pipe and a column for recovering brake fluid flowing out from a caliper of an automobile disc brake is erected in a container containing brake fluid, and a receiving tray for placing the caliper is placed on the top of the cylindrical body. At the same time, these containers and the saucer are communicated through a filter provided in the cylindrical body, and a piston pump for sucking and feeding brake fluid by operating a push rod is provided in the container, and the piston A piston extractor for an automobile disc brake caliper, characterized in that a removable elastic tube is connected to a discharge port of the pump and to a connection port for a brake hose in the caliper.