RU61659U1 - DEVICE FOR PUMPING HYDRAULIC DRIVE OF BRAKES AND CLUTCH OF THE VEHICLE - Google Patents

Abstract

Usage: for pumping the hydraulic brake drive system (clutch) of the car in garage and road conditions with one person (without an assistant) in order to remove air, pollution and restore the efficiency of the above systems.

The proposed device consists of a syringe, (adapter), a seal, a cap with a hole.

2 s.p. f-ly, 2 ill.

Description

The utility model relates to devices for servicing vehicles with hydraulic brake (clutch) in garage and road conditions.

Known devices for pumping brakes:

Copyright certificate No. 1588598 MPK B 60 S 5/00, B 60 T 11/30 (dated 10/10/1988) “Device for pumping hydraulic brakes of cars”,

Patent of the Russian Federation for the invention No. 2149782 IPC B 60 T 11/10 (dated 04/26/1999) "Method and device for removing air from hydraulic clutch and brake systems", US Patent No. 5410881 IPC B 60 T 11/30 (from 24.01. 1994) "A universal device for pumping a hydraulic brake system by one person."

All of the above devices are difficult to manufacture and operate. Despite the realization of the possibility of pumping the brakes by one person, they cannot be considered as close analogues and, especially, a prototype, since when comparing with the proposed device, they cannot see the parts common with the claimed device.

The author was faced with the task of creating a device that was easy to manufacture and operate, with which one person could pump the hydraulic system of the brakes and clutch of a car without an assistant.

In practice, two people are involved in pumping the brakes or clutching with a hydraulic actuator: one operates the brake pedal (clutch) and gives commands to another person who is with a key near the bypass valve of the brake (clutch) working cylinder and opens or closes it.

To solve this problem (to achieve the above technical result), a syringe was used that was hermetically installed in the neck of the storage tank of the hydraulic brake system (clutch) of the car.

Figure 1 and Figure 2 (southeastern isometry) shown in the context of a variant of the device.

Option 1.

The device (Fig. 1) consists of a syringe with a cylinder 1 and a piston 2, which is sealed with a conical nose inserted into the hole of the adapter 3, fixed in the neck of the accumulation tank 4 with brake fluid through the seal 5 using a cap with thread and aperture 6.

Option 2

The device (Figure 2) consists of a syringe with a cylinder 7 and a piston 9. The cylinder 7 in the lower part has an annular girdle 8, which serves as a stop when installing in the neck of the storage tank 4. The tightness of the syringe and storage tank provides a seal 5 and a cap with thread and hole 6.

First, one brake circuit is pumped, then another, starting each time from the wheel farthest from the main cylinder.

The sequence of operations is as follows: (consider option 1 using, in a particular case, a disposable syringe with a volume of 20 ml).

A pipe is put on the bypass valve of the pumped cylinder, which is lowered into the vessel. The standard cover of the storage tank is removed 4. Brake fluid is added to the tank so that it does not reach 5-7 mm to the top of the tank. Insert adapter 3 with seal 5 into the neck of the tank and tighten it with a cap with a thread and a hole 6. In this case, the brake fluid fills a certain volume inside the adapter 3 through the hole (there should be a small layer of brake fluid above the bottom of the adapter). The syringe is filled with brake fluid, from which air must be removed (turn the syringe upside down, tap the wall with your finger. And remove the air with the piston 2.). Insert the syringe nose into the hole in the bottom of the adapter 3.

Unscrew the bypass valve of the brake cylinder by 1 / 2-3 / 4 turns, and inject the brake fluid into the reservoir 4 with a syringe, pressing it to the bottom of the adapter 3. The volume of the syringe is enough to push out a portion of the brake cylinder fluid with air that has entered it (calculation was made for VAZ car).

To pump the entire line from the tank to the cylinder (inclusive), perform 5 times filling the syringe and injection (100 ml), which is enough to replace the brake fluid to the outermost cylinder (rear right wheel).

Take out the syringe. Screw on the bypass valve. Remove adapter 3. Pump out excess brake fluid from the reservoir with a syringe (3 cm from the top). Install the standard plug.

In the general case, the syringe can have an arbitrary volume (for example, 100 ml), so that for one injection it is possible to pump the entire line from tank 4 to the wheel working cylinder (clutch) at once. The pressure developed by a disposable syringe (up to 2 atm.) Is quite enough to remove air from the hydraulic brake system (clutch). The device has been used on a VAZ 21011 car for several years. Disposable syringes of 20 ml, in particular of the BD brand (Spain), are tested for leaks at a load of 8 kg, which corresponds to a piston pressure of 2.54 bar. The material from which this syringe is made - polypropylene and polyethylene - are resistant to brake fluid.

In the case of using the device according to option 2, the syringe is made with a stop band 8 and is shorter than in option 1 (with equal volumes), adapter 3 is no longer needed. The pumping process according to option 2 is similar to that described above, but is somewhat simpler:

The syringe is filled with brake fluid, from which air must be removed (turn the syringe upside down, tap the wall with your finger. And remove the air with the piston 9.). Insert a syringe with a seal 5 located under the belt 8 into the neck of the tank 4 and tighten with a cap with a thread and a hole 6. In this case, make sure that after installing the syringe, its nose is immersed in the brake fluid of the tank 4 (i.e. . ensure the absence of an air gap). Unscrew the bypass valve of the cylinder by 1 / 2-3 / 4 turns, and inject the brake fluid into the reservoir with a syringe 4. Remove the syringe. Screw on the bypass valve. Install the standard plug.

Similarly, the hydraulic clutch is pumped.

Claims (3)

1. A device for pumping the hydraulic brake and clutch of a vehicle, consisting of a syringe sealed in the neck of the storage tank of the hydraulic brake (clutch) of a vehicle. 2. The device for pumping the hydraulic brake and clutch of a vehicle according to claim 1, characterized in that the sealed installation of the syringe is performed using an adapter and a sealing element placed between the adapter and the neck of the storage tank. 3. The device for pumping hydraulic brakes and clutch of a vehicle according to claim 1, characterized in that the sealed installation of the syringe is performed using a stop band made in the lower part of the syringe barrel and a sealing element placed between the stop band of the syringe and the neck of the storage tank.