Automatic sealing and quick detaching structure for oil pipe of oil pressure disc brake of bicycle

Abstract

The utility model discloses a bicycle oil pressure disc brake oil pipe automatic sealing quick release structure which comprises a female plug and a male plug, the female plug is connected with a pump body, and the male plug is connected with an oil pipe. A first valve part is arranged in the female plug, a radial flow channel is formed in the side wall of the front end of the first valve part, the first valve part is sleeved with the annular piston, the annular piston abuts against the first spring, and the annular piston can seal the radial flow channel. A cylindrical piston is arranged in the male plug and abuts against the second spring. A clamping spring is arranged on the female plug, and a clamping groove matched with the clamping spring is formed in the outer side wall of the male plug. When the male plug is inserted into the female plug and pushes the annular piston to retreat, the first valve is inserted into the male plug and pushes the cylindrical piston to retreat, a main flow channel of the first valve is communicated with an inner cavity of the male plug and a main flow channel of the second valve through a radial flow channel, and communication of the pump body and the oil pipe is achieved. And the clamping spring is clamped into the clamping groove for locking. The design is small in size, convenient and fast, oil leakage risks are reduced, and the oil pipe can be automatically sealed after being separated from the pump body.

Description

Technical Field

[0001] The utility model relates to the field of bicycles, in particular to a brake system of a bicycle. Background Art

[0002] With the rapid development of the bicycle and electric-assisted bicycle industries, the demand for brakes is becoming increasingly stringent. Many high-end models use hydraulic brakes. For aesthetic reasons, most hydraulic disc brakes use internal frame wiring. Brake manufacturers separate the brake pump and hose connector during shipment. During assembly at the assembly plant, the hose is threaded into the frame near the caliper and exits near the handlebars. The hose and pump are then secured with screws.

[0003] The connection between the existing hydraulic disc brake oil pipe and the pump body is mostly screw-locked. After the customer has put the oil pipe through, he puts the screw on the oil pipe and locks it into the pump body. Figure 1 If the oil pipe does not fully enter the pump body or the tightening torque does not meet the requirements, oil leakage can easily occur. Assembly is also cumbersome, wasting time and affecting production capacity. Utility Model Content

[0004] The technical problem solved by the utility model is that the connection between the existing hydraulic disc brake oil pipe and the pump body adopts a screw locking method. This method may cause the oil pipe to not completely enter the pump body or the locking torque does not meet the requirements, resulting in oil leakage. In addition, the assembly efficiency is low.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: an automatic sealing and quick-release structure for a hydraulic disc brake oil pipe of a bicycle, comprising a female plug and a male plug, the female plug being connected to a pump body, and the male plug being connected to an oil pipe, the female plug being provided with a first valve member, the front end of the first valve member being closed, a radial flow channel communicating with a main flow channel of the first valve member being provided on a front side wall of the first valve member, and the male plug being provided with a second valve member; an annular piston being provided in the female plug, the annular piston being sleeved on the first valve member, the annular piston being abutted against a first spring sleeved on the first valve member, and under the action of the first spring, the annular piston being capable of sealing the radial flow channel; a cylindrical piston being provided in the male plug, the cylindrical piston being clearance-matched with an inner wall of the male plug, the cylindrical piston being abutted against a second spring sleeved on the second valve member, the cylindrical piston being located in front of the second valve member with a spacing therebetween, a closing structure being provided at the front end of the male plug that is sealingly matched with the cylindrical piston, and the first valve member being capable of being inserted into the closing structure; a retaining spring being provided on the female plug, and a retaining groove being compatible with the retaining spring being provided on an outer side wall of the male plug.

[0006] According to the above technical solution, the male plug is inserted into the female plug, pushing the annular piston backward and compressing the first spring. Simultaneously, the first valve member is inserted into the male plug, pushing the cylindrical piston backward and compressing the second spring. As the annular piston retreats out of the radial flow channel, and the cylindrical piston retreats out of the closing structure, the main flow channel of the first valve member connects to the inner cavity of the male plug and the main flow channel of the second valve member through the radial flow channel, thus achieving communication between the pump body and the oil pipe. After the male and female plugs are properly mated, the retaining spring engages the retaining groove, locking the connection.

[0007] To disassemble the pump body and the oil pipe, remove the retaining spring from the retaining spring groove in the female connector. This releases the retaining spring from locking the male and female connectors, allowing the male connector to be removed from the female connector. Once removed, the first and second springs return to their original positions, and the annular and cylindrical pistons return to their original positions accordingly. The annular piston recloses the radial flow passage, while the cylindrical piston seals the front end of the male connector opening.

[0008] The female plug is screwed onto the pump body, and the first valve component is screwed into the female plug, which is convenient for installation and disassembly.

[0009] A first sealing ring groove is provided on the inner wall of the female plug, and a first sealing ring is installed in the first sealing ring groove. Under the action of the first spring, the front end of the annular piston abuts against the first sealing ring. The first sealing ring can limit the annular piston and seal the oil in the female plug.

[0010] The inner wall of the annular piston is provided with a second sealing ring groove and a third sealing ring groove. The second sealing ring groove is provided with a second sealing ring, and the third sealing ring groove is provided with a third sealing ring. When the annular piston seals the radial flow channel, the radial flow channel is located between the second sealing ring and the third sealing ring. In this way, the annular piston can effectively seal the radial flow channel.

[0011] The front end of the first valve member is provided with a bowl-shaped recess, and the front end of the cylindrical piston is provided with a ball head structure that matches the bowl-shaped recess. When the first valve member pushes the cylindrical piston backward, the bowl-shaped recess positions the cylindrical piston to maintain linear displacement.

[0012] A limiting step is provided on the cylindrical piston, and the limiting step is located behind the ball head structure, and the limiting step abuts against the side wall of the closing structure.

[0013] A fourth sealing ring groove is formed on the inner wall of the closing structure, and a fourth sealing ring is arranged in the fourth sealing ring groove. The fourth sealing ring can seal the oil in the male plug.

[0014] The male plug is tightly sleeved on the outer wall of the oil pipe, and the second valve component is tightly inserted in the oil pipe.

[0015] This new disc brake oil hose automatic sealing quick-release structure is compact and allows for internal wiring connections. To assemble the vehicle, simply insert the male plug of the oil hose directly into the female plug of the pump body and snap it into place. This is quick and convenient, reducing the risk of oil leaks. If parts need to be replaced after-sales, simply remove the retaining spring to disconnect the oil hose from the pump body. Furthermore, both the oil hose and the pump body automatically seal, eliminating the need for plugs to seal them. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 Schematic diagram of the prior art in which the connection between the hydraulic disc brake oil pipe and the pump body is tightened with screws;

[0018] Figure 2 This is a schematic diagram of the connection between the female plug 10 and the male plug 20 of the hydraulic disc brake oil pipe automatic sealing quick-release structure of the present invention;

[0019] Figure 3 It is a cross-sectional view of a pump body 80 provided with a female plug 10;

[0020] Figure 4 for Figure 3 Schematic diagram of the middle female plug 10;

[0021] Figure 5 A cross-sectional view of an oil pipe 90 having a male plug 20 , wherein the oil pipe is connected to a caliper 92 ;

[0022] Figure 6 for Figure 5 A partial enlarged view of

[0023] Figure 7 Schematic diagram of the female plug 10 and the male plug 20 being plugged together;

[0024] Figure 8 for Figure 7 sectional view of

[0025] Figure 9 for Figure 8 Enlarged view of point A in the middle.

[0026] Explanation of symbols in the figure:

[0027] 01. Screws in the prior art;

[0028] 10. Female plug; 11. Circlip;

[0029] 20. Male plug; 21. Closure structure; 22. Card slot;

[0030] 30. First valve member; 31. Main flow channel of the first valve member; 32. Radial flow channel; 33. Bowl-shaped depression;

[0031] 40. Second valve member; 41. Main flow channel of the second valve member;

[0032] 50. annular piston; 51. first spring;

[0033] 60. Cylindrical piston; 61. Second spring; 62. Ball head structure; 63. Limiting step;

[0034] 71, first sealing ring; 72, second sealing ring; 73, third sealing ring; 74, fourth sealing ring;

[0035] 80. Pump body;

[0036] 90. Oil pipe; 91. Protective cover; 92. Caliper. DETAILED DESCRIPTION

[0037] Combine Figure 4 、 Figure 6 A bicycle hydraulic disc brake hose automatic sealing and quick-release structure comprises a female plug 10 and a male plug 20. The female plug is connected to a pump body 80, and the male plug is connected to a hose 90. The female plug is provided with a first valve member 30, the front end of which is closed. A radial flow channel 32 communicating with the main flow channel of the first valve member is defined on the front sidewall of the first valve member. The male plug is provided with a second valve member 40. The female plug 10 is provided with an annular piston 50, which is sleeved on the first valve member and abuts against a first spring 51 sleeved on the first valve member. Under the action of the first spring, the annular piston can seal the radial flow channel 32. The male plug 20 is provided with a cylindrical piston 60, which is clearance-fitted with the inner wall of the male plug and abuts against a second spring 61 sleeved on the second valve member 40. The cylindrical piston is located in front of the second valve member with a gap between them. The front end of the male plug is provided with a closing structure 21 that seals with the cylindrical piston, and the first valve member can be inserted into the closing structure. A retaining spring 11 is provided on the female plug, and a retaining groove 22 that cooperates with the retaining spring is provided on the outer side wall of the male plug.

[0038] like Figure 3 The female plug 10 is screwed onto the pump body 80 , and the first valve member 30 is screwed into the female plug.

[0039] like Figure 4 The inner wall of the female connector 10 is provided with a first sealing ring groove, in which a first sealing ring 71 is located. Under the action of the first spring 51, the front end of the annular piston 50 abuts against the first sealing ring. The first sealing ring 71 serves to position the annular piston 50 and to seal the oil within the female connector 10.

[0040] A second sealing ring groove and a third sealing ring groove are provided on the inner wall of the annular piston 50. A second sealing ring 72 is provided in the second sealing ring groove, and a third sealing ring 73 is provided in the third sealing ring groove. When the annular piston closes the radial flow channel 32, the radial flow channel is located between the second sealing ring and the third sealing ring, and the annular piston 50 can effectively close the radial flow channel 32.

[0041] A bowl-shaped recess 33 is defined at the front end of the first valve member 30 , and a ball head structure 62 that cooperates with the bowl-shaped recess is provided at the front end of the cylindrical piston 60 .

[0042] like Figure 6 A limiting step 63 is provided on the cylindrical piston 60 , and the limiting step is located behind the ball head structure 62 , and the limiting step abuts against the side wall of the closing structure 21 .

[0043] A fourth sealing ring groove is formed on the inner wall of the closing structure 21, and a fourth sealing ring 74 is provided in the fourth sealing ring groove. The fourth sealing ring can seal the oil in the male plug 20.

[0044] Combine Figure 5 、 Figure 6 The male plug 20 is tightly sleeved on the outer wall of the oil pipe 90, and the second valve member 40 is tightly inserted into the oil pipe.

[0045] Combine Figure 2 、 Figures 7 to 9 When connecting the oil pipe 90 to the pump body 80, the male plug 20 is inserted into the female plug 10. The male plug pushes the annular piston 50 backward, compressing the first spring 51. Simultaneously, the first valve member 30 is inserted into the male plug 20. The bowl-shaped recess 33 at the front end of the first valve member 30 engages with the ball-shaped structure 62 at the front end of the cylindrical piston 60, pushing the cylindrical piston 60 backward and compressing the second spring 61. As the annular piston 50 retreats out of the radial flow passage 32, and the cylindrical piston 60 retreats out of the closing structure 21, the main flow passage 31 of the first valve member communicates with the inner cavity of the male plug 20 and the main flow passage 41 of the second valve member through the radial flow passage 32, thereby establishing communication between the pump body 80 and the oil pipe 90. After the male plug 20 and the female plug 10 are properly connected, the retaining spring 11 engages with the retaining groove 22, locking the male and female plugs in place. A protective cover 91 is provided on the oil pipe 90. After the male plug 20 and the female plug 10 are connected, the protective cover is provided on the outer periphery of the male plug and the female plug.

[0046] To disassemble the pump body 80 and oil pipe 90, remove the retaining spring 11 from the retaining spring groove of the female connector. This releases the retaining spring 11 from locking the male connector 20 and the female connector 10, allowing the male connector to be removed from the female connector. After removal, the first spring 51 and the second spring 61 return to their original positions, and accordingly, the annular piston 50 and the cylindrical piston 60 return to their original positions. The annular piston recloses the radial flow passage 32, while the cylindrical piston 60 closes the open front end of the male connector 20.

[0047] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation method and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A bicycle hydraulic disc brake oil pipe automatic sealing quick-release structure, comprising a female plug (10) and a male plug (20), wherein the female plug is connected to a pump body (80), and the male plug is connected to an oil pipe (90), a first valve member (30) is provided in the female plug, the front end of the first valve member is closed, a radial flow channel (32) is provided on the front end side wall of the first valve member, and the second valve member (40) is provided in the male plug; Its characteristics are: An annular piston (50) is provided in the female plug (10), and the annular piston is sleeved on the first valve member. The annular piston abuts against a first spring (51) sleeved on the first valve member. Under the action of the first spring, the annular piston can close the radial flow channel (32); The male plug (20) is provided with a cylindrical piston (60), the cylindrical piston is in clearance with the inner wall of the male plug, the cylindrical piston is in contact with a second spring (61) sleeved on the second valve member (40), the cylindrical piston is located in front of the second valve member and there is a distance between the two, the front end of the male plug is provided with a closing structure (21) that is in sealing cooperation with the cylindrical piston, and the first valve member can be inserted into the closing structure; The female plug is provided with a clamping spring (11), and the outer side wall of the male plug is provided with a clamping groove (22) matched with the clamping spring.

2. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 1, characterized in that: The female plug (10) is screwed onto the pump body (80), and the first valve member (30) is screwed into the female plug.

3. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 1, characterized in that: A first sealing ring groove is provided on the inner wall of the female plug (10), a first sealing ring (71) is provided in the first sealing ring groove, and under the action of the first spring (51), the front end of the annular piston (50) abuts against the first sealing ring.

4. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 1, characterized in that: A second sealing ring groove and a third sealing ring groove are provided on the inner wall of the annular piston (50), a second sealing ring (72) is provided in the second sealing ring groove, and a third sealing ring (73) is provided in the third sealing ring groove. When the annular piston closes the radial flow channel (32), the radial flow channel is located between the second sealing ring and the third sealing ring.

5. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 1, characterized in that: A bowl-shaped recess (33) is provided at the front end of the first valve member (30), and a ball head structure (62) matching the bowl-shaped recess is provided at the front end of the columnar piston (60).

6. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 5, characterized in that: A limiting step (63) is provided on the cylindrical piston (60), and the limiting step is located behind the ball head structure (62). The limiting step abuts against the side wall of the closing structure (21).

7. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 6, characterized in that: A fourth sealing ring groove is provided on the inner wall of the closing structure (21), and a fourth sealing ring (74) is provided in the fourth sealing ring groove.

8. The automatic sealing and quick-release structure for a bicycle hydraulic disc brake hose according to claim 1, characterized in that: The male plug (20) is tightly sleeved on the outer wall of the oil pipe (90), and the second valve component (40) is tightly inserted in the oil pipe.

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