Left-right exchange structure of upper pump of oil pressure disc brake for bicycle and electric vehicle

Abstract

The utility model relates to a left / right interchangeable structure of an upper pump of an oil pressure disc brake, in particular to the left / right interchangeable structure of the upper pump of the oil pressure disc brake for bicycles and electric vehicles. Comprising an upper pump disc, a brake handle is arranged on one side of the upper end of the upper pump disc, a folding end cover is arranged at the lower end of the upper pump disc, and the upper pump disc and the folding end cover are fixedly riveted through knurled rivets and fixed to a bicycle handlebar transverse pipe through locking fixing screws. The upper pump disc is provided with a fine adjustment blocking piece, a brake pump shell is arranged on one side of the brake handle, a spring, an upper pump piston and a rotation stopping pin are sequentially arranged in the brake pump shell from left to right, and the spring, the upper pump piston and the rotation stopping pin are fixedly connected into the brake pump shell through an O-shaped fixing clamp spring. The stability and reliability of the brake system are improved, flexible use and maintenance options are provided, and the brake system is suitable for various different application scenes of bicycles and electric vehicles and can be used in a left-right switching mode.

Description

Technical Field

[0001] The utility model relates to a structure for left / right interchangeability of an oil pressure disc brake master cylinder, especially for the left / right interchangeable structure of an oil pressure disc brake master cylinder used in bicycles and electric vehicles. Background Art

[0002] The oil pressure disc brake master cylinder for bicycles and electric vehicles is a key braking component. Its function is to convert the force applied by the brake handle into hydraulic pressure to push the brake piston, so that the brake pads clamp the disc brake disc to achieve the effect of deceleration or stopping. When the left / right master cylinder needs to be interchanged for the oil pressure disc brakes sold in the market currently, it is necessary to completely remove the master cylinder or cut the oil pipe and then reassemble it. This wastes time and poor assembly will directly lead to the scrapping of the master cylinder. Content of the Utility Model

[0003] The left / right interchangeable structure of the oil pressure disc brake master cylinder for bicycles and electric vehicles provided by the utility model not only improves the stability and reliability of the braking system, but also provides flexible usage and maintenance options, is applicable to a variety of different application scenarios of bicycles and electric vehicles and can be used with left / right interchangeability.

[0004] In order to solve the above problems, the technical solution proposed by the utility model is: the left / right interchangeable structure of the oil pressure disc brake master cylinder for bicycles and electric vehicles, including a master cylinder disc. One side of the upper end of the master cylinder disc is provided with a brake handle, and the lower end of the master cylinder disc is provided with a folding end cover. The master cylinder disc and the folding end cover are fixedly riveted by a knurled rivet and fixed to the bicycle handlebar cross tube by a locking fixing screw. The brake handle is provided with a fine adjustment screw and is connected to the brake handle through a rotating shaft. The master cylinder disc is provided with a fine adjustment shim and a brake pump housing is arranged on one side of the brake handle. Inside the brake pump housing, a spring, a master cylinder piston and a anti-rotation pin are arranged in sequence from left to right, and the spring, the master cylinder piston and the anti-rotation pin are fixedly connected inside the brake pump housing by an O-shaped fixing snap ring.

[0005] Further, a through hole five is arranged on the master cylinder disc, and the brake handle is provided with a through hole six corresponding to the through hole five, and a brake handle fixing pin is arranged in the through hole five and the through hole six. The master cylinder disc is fixedly connected to the brake handle through the brake handle fixing pin.

[0006] Further, a boss one and a groove one are respectively arranged inside the master cylinder disc, and a boss two and a groove two are arranged on the outer wall of the brake pump housing. The boss one is placed inside the groove two, and the boss two is placed inside the groove one. The master cylinder disc is provided with an annular groove two.

[0007] Further, through hole three and a threaded hole corresponding to through hole three are provided on the upper pump disc. An opening is provided between through hole three and the threaded hole. A screw is provided between through hole three and through hole three and the threaded hole. The upper pump disc is fixed to the brake pump housing by the screw.

[0008] Further, through hole one is provided on the fine-tuning shim. Through hole two is provided in the middle part. The upper pump disc has through hole threads corresponding to through hole one and through hole two. The fine-tuning shim is fixedly connected to the upper pump disc by a shim fixing screw, and the fixing screw is placed in through hole one and the through hole thread. The fine-tuning screw is placed in through hole two.

[0009] Further, a plurality of anti-rotation pin fixing grooves are provided on the inner circumference of the brake pump housing cavity, and an annular groove one is provided at one end of the brake pump housing cavity.

[0010] Further, a pin fixing groove is provided on the outer wall of the upper pump piston, and an anti-rotation pin fixing groove corresponding to the pin fixing groove is provided inside the brake pump housing. The anti-rotation pin is placed in the pin fixing groove and the anti-rotation pin fixing groove. An annular groove one communicating with the anti-rotation pin fixing groove is provided at the end of the brake pump housing, and an O-ring fixing clip is placed in the annular groove one and on one side of the anti-rotation pin.

[0011] Advantages of the utility model:

[0012] 1. This structure allows the upper pump assembly to be interchangeably installed on the left and right sides of a bicycle or an electric vehicle. This design enables the brake system to be flexibly configured according to the positions of different handlebars and the needs of users, enhancing the convenience and adaptability of use.

[0013] 2. The upper pump disc and the folding end cover are firmly fixed by knurled rivets and locking fixing screws. This design improves the overall stability and ensures that the brake system will not loosen due to vibration or impact during use.

[0014] 3. The design of the fine-tuning screw and the fine-tuning shim allows users to precisely adjust the brake handle to adapt to personal operating habits and needs, thereby enhancing the comfort and control precision of braking.

[0015] 4. The setting of the through hole and the threaded hole ensures the firm connection between the upper pump disc and the brake pump housing, and the reliability of the structure is enhanced by the fixation of the screw. This design optimizes the installation process and makes the structure more compact and stable.

[0016] 5. The design of the anti-rotation pin and the related fixing grooves ensures the stability of the upper pump piston, prevents the piston from rotating during use, and guarantees the normal operation and long-term reliability of the brake system.

[0017] 6. The overall design takes into account the convenience of installation and maintenance. Through different hole and groove settings, each component can be precisely matched, and adjustments and maintenance can be conveniently carried out when necessary. Description of the Drawings

[0018] Figure 1 It is an exploded view of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0019] Figure 2 It is a cross-sectional view of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0020] Figure 3 It is an exploded view of the brake pump assembly of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0021] Figure 4 It is a cross-sectional view of the brake pump assembly of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0022] Figure 5 It is a partial view of the brake pump housing of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0023] Figure 6 It is a partial view of the master cylinder piston of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0024] Figure 7 It is a partial view of the master cylinder disc of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0025] Figure 8 It is a partial view of the brake handle of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0026] Figure 9 It is a partial view of the fine adjustment shim of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0027] Figure 10 It is a schematic diagram of the master cylinder disc assembled on the handlebar tube of the structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model that can be swapped left and right;

[0028] Figure 11Schematic diagram of the detachable structure with left - right interchangeability of the hydraulic disc brake master cylinder for bicycles and electric vehicles of the present utility model; 1. Master cylinder disc; 101. Fifth through - hole; 103. Third through - hole; 104. Threaded hole; 105. Opening; 106. First groove; 107. First boss; 108. Second annular groove; 2. Brake handle; 201. Sixth through - hole; 3. Folding end cap; 4. Knurled rivet; 5. Screw; 6. Brake handle fixing pin; 7. Rotating shaft; 8. Locking fixing screw; 9. O - type fixing circlip; 10. Anti - rotation pin; 11. Master cylinder piston; 1101. Pin fixing groove; 12. Spring; 13. Brake pump housing; 1301. Anti - rotation pin fixing groove; 1302. First annular groove; 1303. Second boss; 1304. Second groove; 14. Fine - tuning screw; 15. Fine - tuning shim; 1501. First through - hole; 1502. Second through - hole; 16. Fixing screw. Detailed implementation mode

[0029] The present utility model will be further described below with reference to the accompanying drawings.

[0030] According to Figures 1-11 As shown: The present utility model provides a left - right interchangeable structure of the hydraulic disc brake master cylinder for bicycles and electric vehicles, including a master cylinder disc 1. On one side of the upper end of the master cylinder disc 1, there is a brake handle 2. At the lower end of the master cylinder disc 1, there is a folding end cap 3. The master cylinder disc 1 and the folding end cap 3 are fixedly riveted by a knurled rivet 4 and fixed to the handlebar cross - tube of the bicycle by a locking fixing screw 8. A fine - tuning screw 14 is arranged on the brake handle 2 and is connected to the brake handle 2 through a rotating shaft 7. The master cylinder disc 1 is provided with a fine - tuning shim 15, and on one side of the brake handle 2, there is a brake pump housing 13. Inside the brake pump housing 13, a spring 12, a master cylinder piston 11, and an anti - rotation pin 10 are arranged in sequence from left to right, and the spring 12, the master cylinder piston 11, and the anti - rotation pin 10 are fixedly connected inside the brake pump housing 13 by an O - type fixing circlip 9.

[0031] A fifth through - hole 101 is arranged on the master cylinder disc 1. The brake handle 2 is provided with a sixth through - hole 201 corresponding to the fifth through - hole 101, and a brake handle fixing pin 6 is arranged in the fifth through - hole 101 and the sixth through - hole 201. The master cylinder disc 1 is fixedly connected to the brake handle 2 through the brake handle fixing pin 6.

[0032] A first boss 107 and a first groove 106 are respectively arranged inside the master cylinder disc 1. On the outer wall of the brake pump housing 13, there are a second boss 1303 and a second groove 1304. The first boss 107 is placed inside the second groove 1304, and the second boss 1303 is placed inside the first groove 106. The master cylinder disc 1 is provided with a second annular groove 108.

[0033] A through hole three 103 and a threaded hole 104 corresponding to the through hole three 103 are provided on the upper pump disc 1. An opening 105 is provided between the through hole three 103 and the threaded hole 104. A screw 5 is provided in the through hole three 103 and between the through hole three 103 and the threaded hole 104. The upper pump disc 1 is fixed to the brake pump housing 13 by the screw 5.

[0034] The fine-tuning shim 15 is provided with a through hole one 1501 and a through hole two 1502 in the middle part. The upper pump disc 1 has a through hole thread 109 corresponding to the through hole one 1501 and the through hole two 1502. The fine-tuning shim 15 is fixedly connected to the upper pump disc 1 by a shim fixing screw 16, and the fixing screw 16 is placed in the through hole one 1501 and the through hole thread 109. The fine-tuning screw 14 is placed in the through hole two 1502.

[0035] A plurality of anti-rotation pin fixing grooves 1301 are provided on the inner circumference of the brake pump housing 13 cavity, and an annular groove one 1302 is provided at one end of the brake pump housing 13 cavity.

[0036] A pin fixing groove 1101 is provided on the outer wall of the upper pump piston 11, and an anti-rotation pin fixing groove 1301 corresponding to the pin fixing groove 1101 is provided inside the brake pump housing 13. The anti-rotation pin 10 is placed in the pin fixing groove 1101 and the anti-rotation pin fixing groove 1301. An annular groove one 1302 communicating with the anti-rotation pin fixing groove 1301 is provided at the end of the brake pump housing 13, and an O-ring fixing clip is placed in the annular groove one 1302 and on one side of the anti-rotation pin 10.

[0037] Principle of the structure of the oil pressure disc brake upper pump for bicycles and electric vehicles of the present utility model that can be swapped left and right

[0038] A return spring 12 is provided inside the brake pump housing 13 cavity. An upper pump piston 11, an anti-rotation pin 10, and an O-ring fixing clip 9 are sequentially provided at one end of the return spring. As Figure 4 shown. A plurality of anti-rotation pin fixing grooves 1301 are provided on the inner circumference of the brake pump housing 13 cavity, and an annular groove 1302 is provided at one end of the brake pump housing 13 cavity as Figure 5 shown; a pin fixing groove 1101 is provided on the outer circle of the upper pump piston 11. After the return spring 12, the upper pump piston 11, and the anti-rotation pin 10 are installed inside the brake housing cavity, they are fixed with an O-ring fixing clip 9. The anti-rotation pin 10 is matched with the anti-rotation pin fixing groove 1301 and the pin fixing groove 1101 and fixed with an O-ring fixing clip 9. The O-ring fixing clip is matched with the annular groove 1302 for fixation. All the above-mentioned fittings are fixed inside the brake pump housing cavity to form an integral body, as Figure 4 shown. As Figure 7 shown, a through hole 101 is provided on the upper pump disc 1, as Figure 8As shown, a through-hole 201 is provided on the brake handle 2, and the two are fixed by a brake handle fixing pin 6. As Figure 9 shown, a through-hole 1501 is provided on the fine-tuning shim 15, and a through-hole 1502 is provided in the middle part. As Figure 7 shown, a through-hole thread 109 is provided on the upper pump disc 1. The fine-tuning shim 15 is fixed to the disc 1 using a shim fixing screw 16. The fine-tuning screw 14 can pass through the through-hole 1502 of the fine-tuning shim 15. As Figure 10 shown. The upper pump disc 1 and the folding end cap 3 are fixed and riveted by a knurled rivet 4, and are fixed to the bicycle handlebar cross tube by a locking fixing screw 8. As Figure 10 shown. As Figure 7 shown, a boss 107 and a corresponding groove 106 are provided on the upper pump disc 1. Similarly, as Figure 5 shown, a boss 1303 and a corresponding groove 1304 are provided on the brake pump housing 13. The boss 107 can pass through the groove 1302, and similarly, the boss 1303 can pass through the groove 106. In addition, an annular groove 108 is also provided on the upper pump disc 1. As Figure 7 shown, a through-hole 103 and a threaded hole 104 are provided on the upper pump disc 1, and an opening 105 is provided. After the brake pump housing 13 is installed in the upper pump disc 1 and rotated by a certain angle, the boss 107 on the upper pump disc 1 coincides with the boss 1303 on the brake pump housing 13, and is locked and fixed by a screw 5.

[0039] As Figure 11 shown, when it is necessary to swap the left and right parts of the brake upper pump, loosen the screw 5 and rotate the brake pump housing 13 by a certain angle so that the boss 1303 on the brake pump housing corresponds to the groove 106 on the upper pump disc, then the brake pump housing can be completely removed, and the upper pump disc on the other side that needs to be swapped can be installed to achieve the action of swapping the left and right of the hydraulic disc brake upper pump. When actually used, squeeze the handbrake, the brake handle 2, and the brake handle 2 rotates through the rotating shaft 7, squeezing the spring 12 and the upper pump piston 11 to achieve braking.

[0040] The present utility model not only improves the stability and reliability of the brake system, but also provides flexible usage and maintenance options, is applicable to a variety of different bicycle and electric vehicle application scenarios, and can be used with left and right swapping.

[0041] The above has described the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative concept of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present utility model.

Claims

1. The upper pump of hydraulic disc brake for bicycles and electric vehicles can be switched left and right, and its characteristics are: The invention comprises an upper pump disc (1), a brake handle (2) is arranged on one side of the upper end of the upper pump disc (1), a folding end cover (3) is arranged on the lower end of the upper pump disc (1), the upper pump disc (1) and the folding end cover (3) are fixedly riveted by knurled rivets (4) and fixed to the handlebar cross tube of the bicycle by locking screws (8), a fine-tuning screw (14) is arranged on the brake handle (2) and is connected to the brake handle (2) by a rotating shaft (7), the upper pump disc (1) is provided with a fine-tuning baffle (15) and a brake pump housing (13) is arranged on one side of the brake handle (2), a spring (12), an upper pump piston (11) and a stop pin (10) are arranged in sequence from left to right inside the brake pump housing (13), and the spring (12), the upper pump piston (11) and the stop pin (10) are fixedly connected to the inside of the brake pump housing (13) by an O-type fixing retaining ring (9).

2. The left-right swappable structure of the hydraulic disc brake upper pump for bicycles and electric vehicles according to claim 1, characterized in that: The upper pump disc (1) is provided with a fifth through hole (101), the brake handle (2) is provided with a sixth through hole (201) corresponding to the fifth through hole (101), and brake handle fixing pins (6) are provided in the fifth through hole (101) and the sixth through hole (201), and the upper pump disc (1) is fixedly connected to the brake handle (2) via the brake handle fixing pin (6).

3. The left-right swappable structure of the hydraulic disc brake upper pump for bicycles and electric vehicles according to claim 2, characterized in that: The upper pump disc (1) is provided with a boss 1 (107) and a groove 1 (106) respectively on its interior, and the outer wall of the brake pump housing (13) is provided with a boss 2 (1303) and a groove 2 (1304), wherein the boss 1 (107) is placed in the groove 2 (1304), and the boss 2 (1303) is placed in the groove 1 (106), and the upper pump disc (1) is provided with an annular groove 2 (108).

4. The left-right interchangeable structure of the hydraulic disc brake upper pump for bicycles and electric vehicles according to claim 3, characterized in that: The upper pump disc (1) is provided with a through hole three (103) and a threaded hole (104) corresponding to the through hole three (103); an opening (105) is provided between the through hole three (103) and the threaded hole (104); the through hole three (103) and the through hole three (103) and the threaded hole (104) are provided with screws (5); the upper pump disc (1) is fixed to the brake pump housing (13) by the screws (5).

5. The left-right swappable structure of the hydraulic disc brake upper pump for bicycles and electric vehicles according to claim 4, characterized in that: The fine-tuning baffle (15) is provided with a through hole 1 (1501), and a through hole 2 (1502) is provided in the middle part; the upper pump disc (1) has a through hole thread (109) corresponding to the through hole 1 (1501) and the through hole 2 (1502); the fine-tuning baffle (15) is fixedly connected to the upper pump disc (1) by a baffle fixing screw (16), and the fixing screw (16) is placed in the through hole 1 (1501) and the through hole thread (109); the fine-tuning screw (14) is placed in the through hole 2 (1502).

6. The left-right interchangeable structure of the hydraulic disc brake upper pump for bicycles and electric vehicles according to claim 5, characterized in that: A plurality of anti-rotation pin fixing grooves (1301) are arranged on the circumference of the inner cavity of the brake pump housing (13), and an annular groove (1302) is arranged at one end of the inner cavity of the brake pump housing (13).

7. The left-right interchangeable structure of the hydraulic disc brake upper pump for bicycles and electric vehicles according to claim 1, characterized in that: A pin fixing groove (1101) is provided on the outer wall of the upper pump piston (11) and a stop pin fixing groove (1301) corresponding to the pin fixing groove (1101) is provided inside the brake pump housing (13); the stop pin (10) is placed in the pin fixing groove (1101) and the stop pin fixing groove (1301); an annular groove (1302) communicating with the stop pin fixing groove (1301) is provided at the end of the brake pump housing (13) and an O-shaped fixing retaining ring is placed in the annular groove (1302) and is located on one side of the stop pin (10).

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