Main pump structure for vertical brake of oil transfer handlebar of road line

Abstract

The utility model discloses a road line oil transfer handle vertical brake main pump structure which comprises a pump body provided with a piston, a reset spring abutting against the inner end of the piston is arranged in a piston cavity, and the pump body is fixedly connected with a bicycle vertical handle and a bent handle. A lever is arranged in the pump body, one end of the lever abuts against the outer end of the piston, and the other end of the lever is connected with a pull wire which extends out of the pump body. A brake oil pipe is connected to the pump body and communicated with a piston cavity of the pump body. A pull wire is pulled through a bent handle, a lever pushes a piston, hydraulic pressure is transmitted to a brake caliper piston through a brake oil pipe, a brake disc is clamped through the Pascal principle, and braking force is generated to achieve braking. According to the linear oil transfer structure, the problem that flat handle hydraulic brake calipers cannot be assembled on a bent handle road vehicle is solved, and the universality of the road vehicle calipers during selection is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of non-motor vehicle, concretely relates to the brake system of bicycle. BACKGROUND

[0002] In recent years, the curved handle road bicycle is popular among the riders in the market, and the brake mechanism of this type of bicycle is mainly the online pull oil brake and mechanical brake at present. The hydraulic brake mechanism has become the market mainstream, but the brake mechanism is still mainly the online pull oil brake, which causes the flat handle hydraulic brake caliper to be unable to be assembled on the curved handle road bicycle. UTILITARY MODEL CONTENTS

[0003] The utility model solves the technical problem that the flat handle hydraulic brake caliper is unable to be assembled on the curved handle road bicycle.

[0004] In order to solve the above technical problem, the utility model provides the following technical scheme: a road bicycle line turns oil handle vertical brake master cylinder structure, including the pump body with piston, reset spring is arranged in the piston cavity and is in abutment with the inner end of piston, the pump body is fixedly connected with the vertical handle and the curved handle of bicycle;The pump body is provided with a lever, one end of the lever is in abutment with the outer end of piston, and the other end of the lever is connected with a pull wire, and the pull wire extends out of the pump body;Brake oil pipe is connected on the pump body, and the brake oil pipe is communicated with the piston cavity of pump body.

[0005] The handle of curved handle is pulled to pull the pull wire, the pull wire pulls the lever, the lever pushes the piston, the hydraulic pressure in the piston cavity rises, the hydraulic pressure is transmitted to the brake caliper piston through the brake oil pipe, the brake disc is clamped by using the Pascal principle, the braking force is generated to realize the brake.

[0006] The tail part of pump body is provided with vertical handle connecting hole position, and the front end of pump body is provided with curved handle mounting groove, the curved handle mounting groove is used in cooperation with curved handle clamping block, the curved handle is clamped, the fixed connection of curved handle and vertical handle is realized, the pump body acts as the connecting piece of curved handle and vertical handle, so that the line turns oil structure of the utility model does not affect the overall layout of vehicle.

[0007] The pump body is provided with lever chamber, the lever vertical shaft is installed in the lever chamber, the lever is pivoted on the lever vertical shaft, and the pull wire extends into the lever chamber through the perforation on the side wall of lever chamber and is connected with one end of the lever.

[0008] The pump body has a return chamber, which is connected to the high-pressure zone of the piston chamber via a main return hole. The return chamber is also connected to the low-pressure zone of the piston chamber via a return auxiliary hole. The piston is located in the low-pressure zone and has an annular oil groove that connects to the return auxiliary hole. A lever pushes the piston, compressing the oil in the high-pressure zone. Simultaneously, the oil is forced into the brake line and then into the return chamber through the main return hole. As the piston continues forward, it blocks the main return hole, which no longer connects the piston chamber and the return chamber. The return auxiliary hole connects the piston's annular oil groove to the return chamber. The oil in the return chamber acts on the sidewall of the annular oil groove, propelling the piston forward and assisting the operator's braking. When the operator releases the brake lever, the return spring releases its elastic potential energy, driving the piston backward. The pressure in the high-pressure zone decreases, and the oil in the brake line flows back into the piston chamber. The oil in the return chamber flows back into the piston chamber through the main return hole, and the oil in the annular oil groove flows back into the return chamber through the return auxiliary hole.

[0009] An annular seal is provided in front of the annular oil groove, and an O-ring is provided behind the annular oil groove. The annular seal and the O-ring are in close contact with the side wall of the piston chamber.

[0010] The return chamber contains a hollow hydraulic pressure regulator, open at only one end. An airflow regulator mates with this open end, and the airflow regulator has an air hole communicating with the inner cavity of the hydraulic pressure regulator. A threaded locking mechanism secures both the airflow regulator and the hydraulic pressure regulator within the return chamber. The threaded locking mechanism also has a through hole connecting the airflow regulator to the outside of the pump body. When the piston advances, the hydraulic fluid in the piston chamber enters the return chamber through the main return hole, compressing the hydraulic pressure regulator and causing it to elastically deform, accumulating elastic potential energy. After the main return hole is closed by the piston, the hydraulic fluid in the return chamber is forced into the piston's annular oil groove through the auxiliary return hole. When the piston retracts and returns to its original position, the elastic potential energy of the hydraulic pressure regulator is released, and the hydraulic fluid in the return chamber is forced into the high-pressure zone of the piston chamber through the main return hole. The hydraulic pressure regulator functions to regulate and balance the hydraulic pressure, ensuring smooth braking.

[0011] This invention's cable-to-hydraulic brake caliper structure solves the problem of flat-bar hydraulic brake calipers being unable to be assembled on drop-bar road bikes, improving the versatility of road bike caliper selection. Furthermore, this cable-to-hydraulic brake caliper structure does not affect the overall layout of the vehicle. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 A schematic diagram of the master cylinder structure for a highway bike's throttle-handle brake.

[0014] Figure 2 for Figure 1 AA section view;

[0015] Figure 3 for Figure 1 Top view;

[0016] Figure 4 A 3D view of the structure of the master cylinder for the throttle-handle brake on a highway bike.

[0017] Figure 5 Exploded view of the main brake pump structure for a highway bike with a throttle handlebar;

[0018] Figure 6 This is a schematic diagram of the airflow regulator 61;

[0019] Figure 7 This is a schematic diagram of a lever of 40.

[0020] Figure 8 This is a schematic diagram showing the connection between the stem handlebar 31 and the drop handlebar 32 for the main brake pump structure of the road bike's throttle shifter.

[0021] Explanation of symbols in the diagram:

[0022] 10. Pump body; 11. Vertical handle connection hole; 12. Bent handle mounting groove; 13. Bent handle clamping block; 14. Lever chamber; 15. Return chamber; 150. Oil filling hole; 151. Sealing screw; 16. Main return hole; 17. Return auxiliary hole;

[0023] 20. Piston; 21. Return spring; 22. Annular oil groove; 23. Annular seal; 24. O-ring seal;

[0024] 31. Stand handlebars; 32. Bend handlebars;

[0025] 40. Lever; 41. Pull wire; 42. Lever shaft; 43. Hole that mates with the lever shaft; 44. End that abuts against the piston; 45. Hole for connecting the pull wire;

[0026] 50. Brake hose;

[0027] 60. Hydraulic pressure regulating component; 61. Airflow regulating component; 610. Air hole; 62. Threaded locking component; 620. Through hole. Detailed Implementation

[0028] Combination Figure 2 , Figure 5 , Figure 8 A master cylinder structure for a road bike handlebar-mounted brake includes a pump body 10 with a piston 20, a return spring 21 in the piston chamber that abuts against the inner end of the piston, and the pump body is fixedly connected to the bicycle handlebar 31 and the drop handlebar 32; the pump body has a lever 40, one end of which abuts against the outer end of the piston, and the other end of the lever is connected to a pull cable 41 that extends outward from the pump body; a brake oil pipe 50 is connected to the pump body and communicates with the piston chamber of the pump body.

[0029] The pump body 10 has a handle connection hole 11 at the tail end and a handle mounting groove 12 at the front end. The handle mounting groove is used in conjunction with the handle clamping block 13.

[0030] The pump body 10 is provided with a lever chamber 14, in which a lever shaft 42 is installed, and a lever 40 is pivotally connected to the lever shaft.

[0031] like Figure 2 The pump body 10 is provided with a return chamber 15. The high-pressure zone of the return chamber and the piston chamber are connected through a main return hole 16, and the low-pressure zone of the return chamber and the piston chamber are connected through a return auxiliary hole 17. The piston 20 is located in the low-pressure zone and is provided with an annular oil groove 22, which can communicate with the return auxiliary hole. The return chamber 15 is provided with an oil injection hole 150, and the oil injection hole is provided with a sealing screw 151.

[0032] An annular seal 23 is provided in front of the annular oil groove 22, and an O-ring 24 is provided behind the annular oil groove. The annular seal and the O-ring are in close contact with the side wall of the piston chamber.

[0033] Combination Figure 2 , Figure 5 , Figure 6 The return cavity 15 is provided with a hollow oil pressure regulating component 60. The oil pressure regulating component is open at only one end. An airflow regulating component 61 is fitted to the open end of the oil pressure regulating component. The airflow regulating component is provided with an air hole 610 that communicates with the inner cavity of the oil pressure regulating component. A threaded locking component 62 locks the airflow regulating component and the oil pressure regulating component in the return cavity. The threaded locking component is provided with a through hole 620 that connects the airflow regulating component to the outside of the pump body.

[0034] The operator pulls the cable 41 via the handlebar, which pulls the lever 40. The lever pushes the piston 20, causing the hydraulic pressure in the piston chamber to rise. The high-pressure oil is forced into the brake line 50, and the hydraulic pressure is transmitted to the brake caliper piston through the brake line. Using Pascal's principle, the brake disc is clamped, generating braking force to achieve braking. Simultaneously, the oil is forced into the brake line 50 and then into the return chamber 15 through the main return hole 16, compressing the hydraulic pressure regulating component 60. The hydraulic pressure regulating component elastically deforms, accumulating elastic potential energy. The advancing piston 20 blocks the main return hole 16, and the main return hole no longer connects the piston chamber and the return chamber 15. Instead, the return auxiliary hole 17 connects the piston's annular oil groove 22 to the return chamber 15. The oil in the return chamber acts on the sidewall of the annular oil groove, propelling the piston 20 forward and assisting the operator's braking.

[0035] When the operator releases the brake handle, the return spring 21 releases its elastic potential energy, driving the piston 20 to move backward. The pressure in the high-pressure zone decreases, and the oil in the brake oil pipe 50 flows back into the piston chamber. The elastic potential energy of the oil pressure regulating component 60 is released, and the oil in the return chamber 15 flows back into the piston chamber through the main return hole 16.

[0036] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A master cylinder structure for a road bike throttle stand brake, comprising a pump body (10) with a piston (20), and a return spring (21) abutting against the inner end of the piston in the piston chamber, characterized in that: The pump body is fixedly connected to the bicycle handlebars (31) and the drop handlebars (32); the pump body is provided with a lever (40), one end of which abuts against the outer end of the piston, and the other end of the lever is connected to a pull cable (41), which extends outward from the pump body; the pump body is connected to a brake oil pipe (50), which is connected to the piston chamber of the pump body.

2. The highway bike lever-operated throttle stand brake master cylinder structure as described in claim 1, characterized in that: The pump body (10) has a handle connection hole (11) at the tail end and a handle mounting groove (12) at the front end. The handle mounting groove is used in conjunction with the handle clamping block (13).

3. The highway bike throttle stem brake master cylinder structure as described in claim 1, characterized in that: The pump body (10) is provided with a lever chamber (14), in which a lever shaft (42) is installed, and the lever (40) is pivotally connected to the lever shaft.

4. The highway bike throttle stem brake master cylinder structure as described in claim 1, characterized in that: The pump body (10) is provided with a return chamber (15). The high pressure zone of the return chamber and the piston chamber are connected through the main return hole (16). The low pressure zone of the return chamber and the piston chamber are connected through the return auxiliary hole (17). The piston (20) is located in the low pressure zone. The piston is provided with an annular oil groove (22). The annular oil groove can be connected to the return auxiliary hole.

5. The highway bike lever shifter brake master cylinder structure as described in claim 4, characterized in that: An annular seal (23) is provided in front of the annular oil groove (22), and an O-ring (24) is provided behind the annular oil groove. The annular seal and the O-ring are in close contact with the side wall of the piston chamber.

6. The highway bike throttle stem brake master cylinder structure as described in claim 4, characterized in that: The return cavity (15) is provided with a hollow oil pressure regulating component (60). The oil pressure regulating component is open at only one end. An airflow regulating component (61) is fitted to the open end of the oil pressure regulating component. The airflow regulating component is provided with an air hole (610) that communicates with the inner cavity of the oil pressure regulating component. A threaded locking component (62) locks the airflow regulating component and the oil pressure regulating component in the return cavity. The threaded locking component is provided with a through hole (620) that connects the airflow regulating component to the outside of the pump body.

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