Universal joint structure of oil pressure disc brake and oil pressure disc brake

Abstract

The utility model discloses an oil pressure disc brake universal joint structure and an oil pressure disc brake. The universal joint structure comprises a universal joint, a height limiting inner sleeve and a joint screw, the universal joint comprises a sleeve part and a joint part, the sleeve part is arranged on the periphery of the height limiting inner sleeve in a sleeving mode and is in running fit with the height limiting inner sleeve, and the joint screw is matched in the height limiting inner sleeve. The oil pressure disc brake comprises lower pump calipers, a pair of jacking pistons movably matched in an oil cavity of the lower pump calipers and a pair of brake pads located between the pair of jacking pistons, the pair of brake pads are supported by a U-shaped spring, and the U-shaped spring, the left brake pad, the right brake pad and the lower pump calipers are matched on the same shaft piece. The joint screw is in threaded connection with the lower pump calipers, and the universal joint is communicated with an oil cavity of the lower pump through the oil duct and the oil groove. The oil pipe universal joint is used for solving the problem that an oil pipe on the lower pump calipers interferes with a bicycle frame after an oil pressure disc brake is installed on a bicycle, and is convenient to install, stable in sealing, capable of rotating by 360 degrees, capable of avoiding interference with the bicycle frame, reliable and undamaged in a sealing structure in the life cycle, easy to machine and suitable for batch production.

Description

TECHNICAL FIELD

[0001] The utility model relates to non-motor vehicle field, concretely relates to brake device. BACKGROUND

[0002] The existing market bicycle riding activities are more and more pursued by young people, and many enthusiasts like to modify the bicycle, especially replace the oil pressure disc brake brake that reacts quickly and sensitively, the oil pressure disc brake on the market is assembled on the pump, and there is no problem, the pump oil pipe cannot be adjusted angle, and the pump assembly may interfere with the frame, resulting in that the oil pipe bending angle is too large, and the pipe may be cracked and oil may be leaked for a long time, and safety accidents are caused. UTILITARY MODEL CONTENT

[0003] The utility model solves the technical problem that the existing oil pressure disc brake pump oil pipe cannot be adjusted angle, and the pump assembly may interfere with the frame, resulting in that the oil pipe bending angle is too large, and the pipe may be cracked and oil may be leaked for a long time, and safety accidents are caused.

[0004] To solve the above technical problem, the utility model provides the following technical scheme: a kind of oil pressure disc brake universal joint structure, including height limiting inner sleeve and joint screw, universal joint includes sleeve portion and joint portion, first passageway is communicated sleeve portion and joint portion;The outer side wall of height limiting inner sleeve is provided with outer side annular oil guide groove, the inner side wall of height limiting inner sleeve is provided with inner side annular oil guide groove, and oil hole is communicated outer side annular oil guide groove and inner side annular oil guide groove;Joint screw is equipped with second passageway, and joint screw is fitted in height limiting inner sleeve, and second passageway is communicated with inner side annular oil guide groove;Height limiting inner sleeve is fitted in the sleeve portion, and outer side annular oil guide groove is communicated with first passageway.

[0005] Universal joint can rotate around height limiting inner sleeve 360 °, avoid interfering with frame.

[0006] Inner side annular oil guide groove and outer side annular oil guide groove are correspondingly arranged inside and outside, and the oil hole is a straight hole.

[0007] Sleeve portion is equipped with first recess, and first O-shaped sealing ring is fitted in first recess, and first O-shaped sealing ring is located between the head of joint screw and sleeve portion.

[0008] Joint screw is screwed with pump caliper, and pump caliper is equipped with second recess, and second O-shaped sealing ring is fitted in second recess, and second O-shaped sealing ring is located between sleeve portion and pump caliper.

[0009] The utility model discloses a hydraulic disc brake, including lower pump caliper, left side top pressure piston and right side top pressure piston, left side brake pad and right side brake pad, left side top pressure piston is fitted in the left side chamber of lower pump caliper, right side top pressure piston is fitted in the right side chamber of lower pump caliper, left side brake pad and right side brake pad are arranged between left side top pressure piston and right side top pressure piston, and U type spring props open left side brake pad and right side brake pad, and U type spring, left side brake pad, right side brake pad and lower pump caliper are fitted on the same axle spare. Third channel communicates left side chamber and right side chamber, and the import of third channel is screwed with the universal joint structure of hydraulic disc brake. The universal joint structure of hydraulic disc brake includes universal joint, height limit inner cover and joint screw, and the universal joint includes sleeve part and joint part, and first channel communicates sleeve part and joint part. The outside wall of height limit inner cover is provided with outside annular oil guide groove, and the inside wall of height limit inner cover is provided with inside annular oil guide groove, and oil hole communicates outside annular oil guide groove and inside annular oil guide groove. The import of third channel is screwed with joint screw, and joint screw is provided with second channel, and second channel communicates with third channel, and joint screw is fitted in height limit inner cover, and second channel communicates with inside annular oil guide groove. Height limit inner cover is fitted in sleeve part, and outside annular oil guide groove communicates with first channel.

[0010] The utility model discloses a hydraulic disc brake universal joint structure and hydraulic disc brake, which are used to solve the problem of interference between the oil pipe on the lower pump caliper and the frame after the hydraulic disc brake is installed on the bicycle, and are convenient to install, stable in sealing, can be rotated by 360 degrees, avoid interference with the frame, and are not damaged in the service life, simple to process and suitable for mass production. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be further described below with reference to the drawings:

[0012] Fig. 1 It is the schematic diagram of the universal joint structure of hydraulic disc brake;

[0013] Fig. 2 It is the sectional view of the universal joint structure of hydraulic disc brake;

[0014] Fig. 3 It is the explosion view of the universal joint structure of hydraulic disc brake;

[0015] Fig. 4 It is the schematic diagram of hydraulic disc brake;

[0016] Fig. 5 It is the schematic diagram of another view of hydraulic disc brake;

[0017] Fig. 6 It is the explosion view of hydraulic disc brake.

[0018] Explanation of symbols in the drawing:

[0019] 100. Oil pressure disc brake universal joint structure

[0020] 10. Universal joint; 11. First channel

[0021] 20. Height limiting inner sleeve; 21. Outer annular oil guide groove; 22. Inner annular oil guide groove; 23. Oil passage hole

[0022] 30. Joint screw; 31. Second channel

[0023] 41. First O-ring; 42. Second O-ring; 43. Third O-ring

[0024] 50. Lower pump caliper; 51. Left caliper; 52. Right caliper; 53. Bolt

[0025] 61. Left side pressing piston; 62. Right side pressing piston

[0026] 71. Left side brake pad; 72. Right side brake pad; 73. U-shaped spring DETAILED DESCRIPTION

[0027] In combination Figs. 1 to 3 An oil pressure disc brake universal joint structure includes a universal joint 10, a height limiting inner sleeve 20, and a joint screw 30. The universal joint includes a sleeve portion and a joint portion. A first channel 11 connects the sleeve portion and the joint portion.

[0028] An outer annular oil guide groove 21 is formed on an outer sidewall of the height limiting inner sleeve. An inner annular oil guide groove 22 is formed on an inner sidewall of the height limiting inner sleeve. An oil passage hole 23 connects the outer annular oil guide groove and the inner annular oil guide groove.

[0029] The joint screw 30 is provided with a second channel 31. The joint screw is fitted in the height limiting inner sleeve. The second channel is in communication with the inner annular oil guide groove 22. The height limiting inner sleeve is fitted in the sleeve portion. The outer annular oil guide groove 21 is in communication with the first channel 11.

[0030] The inner annular oil guide groove 22 and the outer annular oil guide groove 21 are arranged in a corresponding inner-outer relationship. The oil passage hole 23 is a straight hole.

[0031] The sleeve portion is provided with a first recess. A first O-ring 41 is fitted in the first recess. The first O-ring is located between the head of the joint screw and the sleeve portion.

[0032] In combination Figs. 4 to 6The oil pressure disc brake comprises a lower pump caliper 50, a left side pressing piston 61 and a right side pressing piston 62, a left side brake pad 71 and a right side brake pad 72, the left side pressing piston is matched in a left side chamber of the lower pump caliper, the right side pressing piston is matched in a right side chamber of the lower pump caliper, the left side brake pad and the right side brake pad are arranged between the left side pressing piston and the right side pressing piston, a U-shaped spring 73 is used to open the left side brake pad and the right side brake pad, and the U-shaped spring, the left side brake pad, the right side brake pad and the lower pump caliper are matched on the same shaft piece.

[0033] A third channel is arranged to communicate the left side chamber and the right side chamber, and an inlet of the third channel is screwed with an oil pressure disc brake universal joint structure 100. A joint screw 30 is screwed with the lower pump caliper, the lower pump caliper is provided with a second recess, and a second O-shaped sealing ring 42 is matched in the second recess, and the second O-shaped sealing ring is located between a sleeve part and the lower pump caliper. The third channel is provided with a third O-shaped sealing ring 43 at a joint part of the left side caliper 51 and the right side caliper 52.

[0034] The above is only a preferred embodiment of the present application, and for those skilled in the art, the specific embodiment and application range can be changed according to the idea of the present application, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. An oil pressure disc brake universal joint structure comprising a universal joint (10), a height limiting inner sleeve (20) and a joint screw (30), characterized in that: The universal joint comprises a sleeve part and a joint part, and a first channel (11) is arranged to communicate the sleeve part and the joint part; An outer side wall of the height-limiting inner sleeve is provided with an outer side annular oil guide groove (21), and an inner side wall of the height-limiting inner sleeve is provided with an inner side annular oil guide groove (22), and an oil passing hole (23) is arranged to communicate the outer side annular oil guide groove and the inner side annular oil guide groove; The joint screw (30) is provided with a second channel (31), the joint screw is arranged in the height-limiting inner sleeve, the second channel is communicated with the inner side annular oil guide groove (22), the height-limiting inner sleeve is arranged in the sleeve part, and the outer side annular oil guide groove (21) is communicated with the first channel (11).

2. The oil hydraulic disc brake universal joint structure according to claim 1, characterized by: The inner side annular oil guide groove (22) and the outer side annular oil guide groove (21) are arranged in correspondence with each other, and the oil passing hole (23) is a straight hole.

3. The oil hydraulic disc brake universal joint structure according to claim 1, characterized by: The sleeve part is provided with a first recess, and a first O-shaped sealing ring (41) is arranged in the first recess and located between the head of the joint screw and the sleeve part.

4. The oil hydraulic disc brake universal joint structure according to claim 1, characterized by: The joint screw (30) is screwed with the lower pump caliper, the lower pump caliper is provided with a second recess, and a second O-shaped sealing ring (42) is arranged in the second recess and located between the sleeve part and the lower pump caliper.

5. An oil pressure disc brake, comprising a lower pump caliper (50), a left side pressing piston (61) and a right side pressing piston (62), a left side brake pad (71) and a right side brake pad (72), the left side pressing piston is arranged in a left side chamber of the lower pump caliper, the right side pressing piston is arranged in a right side chamber of the lower pump caliper, the left side brake pad and the right side brake pad are arranged between the left side pressing piston and the right side pressing piston, a U-shaped spring (73) is arranged to separate the left side brake pad and the right side brake pad, and the U-shaped spring, the left side brake pad, the right side brake pad and the lower pump caliper are arranged on the same shaft; A third channel is arranged to communicate the left side chamber and the right side chamber, and an inlet of the third channel is screwed with the oil pressure disc brake universal joint structure (100); The oil pressure disc brake universal joint structure comprises a universal joint (10), a height limiting inner sleeve (20) and a joint screw (30), characterized in that: The universal joint comprises a sleeve part and a joint part, and a first channel (11) is arranged to communicate the sleeve part and the joint part; an outer side wall of the height-limiting inner sleeve is provided with an outer side annular oil guide groove (21), and an inner side wall of the height-limiting inner sleeve is provided with an inner side annular oil guide groove (22), and an oil passing hole (23) is arranged to communicate the outer side annular oil guide groove and the inner side annular oil guide groove; the joint screw is screwed with the inlet of the third channel, the joint screw is provided with a second channel (31), the second channel is communicated with the third channel, the joint screw is arranged in the height-limiting inner sleeve, the second channel is communicated with the inner side annular oil guide groove; the height-limiting inner sleeve is arranged in the sleeve part, and the outer side annular oil guide groove is communicated with the first channel.

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