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CN-224228846-U - High leakproofness brake pump piston assembly

CN224228846UCN 224228846 UCN224228846 UCN 224228846UCN-224228846-U

Abstract

The utility model relates to the technical field of automobile braking, in particular to a high-tightness brake pump piston assembly, which comprises a guide sleeve, wherein a piston is connected in the guide sleeve in a sliding way, one side of the piston is fixedly connected with a pushing rod, the outer wall of the piston is sleeved with a first sealing ring, the piston is provided with a self-adapting mechanism, the self-adapting mechanism comprises a sliding groove and a limiting ring, the inner part of the sliding groove is fixedly connected with a first magnet, the middle position of the inner part of the sliding groove is fixedly connected with a second magnet, the second magnets are fixedly connected with a pushing ring together, and the outer wall of the pushing ring is fixedly connected with a second sealing ring.

Inventors

  • MA WENHONG
  • YE HAI

Assignees

  • 衢州众森汽车配件有限公司

Dates

Publication Date
20260512
Application Date
20250627

Claims (5)

  1. 1. The high-tightness brake pump piston assembly comprises a guide sleeve (1), wherein a piston (2) is connected inside the guide sleeve (1) in a sliding manner, a pushing rod (3) is fixedly connected to one side of the piston (2), and a first sealing ring (4) is sleeved on the outer wall of the piston (2); The self-adaptive piston is characterized in that the piston (2) is provided with a self-adaptive mechanism (5), the self-adaptive mechanism (5) comprises a sliding groove (51) and a limiting ring (52), a first magnet (53) is fixedly connected inside the sliding groove (51), a second magnet (54) is fixedly connected to the middle position inside the sliding groove (51), a pushing ring (55) is fixedly connected with the second magnet (54), and a second sealing ring (56) is fixedly connected to the outer wall of the pushing ring (55).
  2. 2. A high tightness brake pump piston assembly according to claim 1, characterized in that the first sealing ring (4) is in sliding abutment with the inner wall of the guiding sleeve (1).
  3. 3. The high-tightness brake pump piston assembly of claim 1, wherein the sliding grooves (51) are formed in the piston (2) in an array, and the limiting rings (52) are fixedly connected to the outer wall of the piston (2) at positions corresponding to one side of the first sealing ring (4).
  4. 4. A high-tightness brake pump piston assembly according to claim 1, wherein one side of the first sealing ring (4) is abutted against the limiting ring (52), the outer wall of the second sealing ring (56) is slidably abutted against the inner wall of the guide sleeve (1), the pushing ring (55) is slidably connected to the piston (2), and one side of the pushing ring (55) is abutted against the other side of the first sealing ring (4).
  5. 5. A high-tightness brake pump piston assembly according to claim 1, wherein one side of the first magnet (53) is provided with a south pole, the second magnet (54) is provided with a north pole at the position corresponding to the south pole of the first magnet (53), and the first magnet (53) is magnetically connected with the corresponding second magnet (54).

Description

High leakproofness brake pump piston assembly Technical Field The utility model relates to the technical field of automobile braking, in particular to a high-tightness brake pump piston assembly. Background The master cylinder is also called as brake master oil, and the main function of the master cylinder is to push brake fluid to be transmitted into each brake cylinder to push pistons, and a piston assembly is a key component in a brake system. The piston is usually provided with a sealing ring, and the diameter of the sealing ring is reduced due to friction loss during long-term working, so that the sealing performance is reduced. Disclosure of utility model The present utility model is directed to a high tightness brake pump piston assembly that solves the above mentioned problems of the prior art. In order to achieve the aim, the utility model provides the technical scheme that the high-tightness brake pump piston assembly comprises a guide sleeve, wherein a piston is connected inside the guide sleeve in a sliding manner, one side of the piston is fixedly connected with a pushing rod, and the outer wall of the piston is sleeved with a first sealing ring; Be equipped with self-adaptation mechanism on the piston, self-adaptation mechanism includes spout and spacing ring, the inside equal fixedly connected with first magnet of spout, the inside intermediate position department of spout is equal sliding connection has the second magnet, the common fixedly connected with of second magnet promotes the ring, the outer wall fixedly connected with second sealing ring of promotion ring. Preferably, the first sealing ring is in sliding abutment with the inner wall of the guide sleeve. Preferably, the sliding groove array is arranged on the piston, and the limiting ring is fixedly connected to the outer wall of the piston at a position corresponding to one side of the first sealing ring. Preferably, one side of the first sealing ring is abutted with the limiting ring, the outer wall of the second sealing ring is in sliding abutment with the inner wall of the guide sleeve, the pushing ring is in sliding connection with the piston, and one side of the pushing ring is abutted with the other side of the first sealing ring. Preferably, one side of the first magnet is set to be a south pole, the second magnet is set to be a north pole at the position corresponding to the south pole of the first magnet, and the first magnet is connected with the corresponding second magnet through ferromagnetic attraction. Compared with the prior art, the self-adaptive compensation mechanism has the beneficial effects that when the piston moves, the self-adaptive mechanism can bear hydraulic thrust due to pushing brake fluid, so that the first sealing ring is pressed and deformed, at the moment, the diameter of the outer ring of the first sealing ring can be increased due to the pressing, and the problems of abrasion and diameter reduction of the sealing ring caused by long-term use can be effectively counteracted by the self-adaptive compensation mechanism, so that the piston assembly is ensured to always maintain excellent sealing performance. Drawings FIG. 1 is a schematic diagram of a front view of the present utility model; FIG. 2 is a schematic cross-sectional view of the present utility model; fig. 3 is a schematic structural view of the present utility model. In the figure, 1, a guide sleeve, 2, a piston, 3, a pushing rod, 4, a first sealing ring, 5, a self-adapting mechanism, 51, a chute, 52, a limiting ring, 53, a first magnet, 54, a second magnet, 55, a pushing ring, 56 and a second sealing ring. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Referring to fig. 1-3, the present utility model provides the following technical solutions: The high-tightness brake pump piston assembly comprises a guide sleeve 1, wherein a piston 2 is slidably connected inside the guide sleeve 1, a push rod 3 is fixedly connected to one side of the piston 2, a first sealing ring 4 is sleeved on the outer wall of the piston 2, and the first sealing ring 4 is slidably abutted to the inner wall of the guide sleeve 1; When the automobile brake pedal is used, when a driver presses a brake pedal, pedal force transmits power to the push rod 3 and the piston 2 through the automobile transmission mechanism, the piston 2 moves in the guide sleeve 1 to enable the front brake fluid pressure to rise, the first sealing ring 4 provides sealing for the piston 2, high-pressure brake fluid is conveyed