Motorcycle brake lower pump assembly

Abstract

The utility model relates to a motorcycle brake lower pump assembly which comprises a pump body, an oil pipe joint and an oil inlet bolt, a threaded hole is formed in the pump body, a mounting hole is formed in the end of the oil pipe joint and communicated with an inner cavity of the oil pipe joint, and a first channel is formed in the oil inlet bolt and communicated with the inner cavity of the oil pipe joint. The oil inlet bolt penetrates through the mounting hole and then is in threaded connection with the interior of the threaded hole, so that the first channel is communicated with an inner cavity of the oil pipe joint and an inner cavity of the pump body, a threaded section connected with the oil inlet bolt is arranged on the side wall of the mounting hole, and the threaded section is located on the side, close to the pump body, of the inner cavity of the oil pipe joint. The oil inlet bolt and the oil pipe connector are connected into a whole, relative collision force generated by vibration of the oil inlet bolt and the oil pipe connector is weakened, and therefore abrasion of the connecting position of the oil inlet bolt and the oil pipe connector is weakened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of brake pump, in particular to a motorcycle brake lower pump assembly. BACKGROUND

[0002] The brake system is the important guarantee of motorcycle safe driving.

[0003] The prior art motorcycle brake lower pump is connected with the oil inlet pipe and the pump body through the oil inlet bolt and the oil pipe joint. When the motorcycle is running, the road surface may cause vibration. When the vibration of the motorcycle is transmitted to the oil inlet bolt and the oil pipe joint, the two may shake and collide and wear at the connection. The sealing of the two parts may be reduced, and the brake oil may leak from the connection, so that the motorcycle brake system cannot be used. SUMMARY

[0004] The motorcycle brake lower pump assembly provided by the application sets a new connection structure to make the oil inlet bolt and the oil pipe joint integrated after connection, so that the relative collision force caused by the vibration of the two is reduced, and the wear at the connection of the two is reduced.

[0005] The motorcycle brake lower pump assembly provided by the application adopts the following technical scheme:

[0006] The motorcycle brake lower pump assembly comprises a pump body, an oil pipe joint and an oil inlet bolt. The pump body is provided with a threaded hole. The end of the oil pipe joint is provided with a mounting hole. The mounting hole is connected with the inner cavity of the oil pipe joint. The oil inlet bolt is provided with a first channel. The oil inlet bolt passes through the mounting hole and is threadedly connected in the threaded hole, so that the first channel is connected with the inner cavities of the oil pipe joint and the pump body. The side wall of the mounting hole is provided with a threaded section connected with the oil inlet bolt. The threaded section is located on the side of the inner cavity of the oil pipe joint close to the pump body.

[0007] When the product is assembled, the mounting hole is first aligned with the threaded hole, then the oil inlet bolt is inserted into the mounting hole, and then the oil inlet bolt is threadedly connected to the threaded section and the threaded hole. After the oil inlet bolt is threadedly connected to the threaded end, the oil inlet bolt and the oil pipe joint are integrated. During the running of the motorcycle, the two vibrate together and have similar vibration frequencies, the collision and wear between the side wall of the mounting hole and the oil inlet bolt are reduced, the gap between the side wall of the mounting hole and the oil inlet bolt is controlled, and the leakage of brake oil from the gap is prevented.

[0008] Preferably, the two sides of the end of the oil pipe joint are respectively provided with a first sealing gasket and a second sealing gasket. The oil inlet bolt passes through the first sealing gasket and the second sealing gasket. The first sealing gasket is located between the end of the oil pipe joint and the head of the oil inlet bolt. The second sealing gasket is located between the end of the oil pipe joint and the pump body.

[0009] By adopting the technical scheme, two sealing pads are arranged to further improve the connection sealing performance among the pump body, the oil pipe joint and the oil inlet bolt. Meanwhile, the two sealing pads protect the connection between the pump body, the oil pipe joint and the oil inlet bolt, and prevent vibration wear of the connection.

[0010] Preferably, a first ring groove is arranged on the side wall of the pump body away from the pump body, a first sealing ring is arranged on the first sealing pad, and the first sealing ring is embedded in the first ring groove.

[0011] By adopting the technical scheme, the cooperation between the first sealing ring groove and the first sealing ring can reduce the possibility of brake oil leaking from the gap between the side wall of the mounting hole and the oil inlet bolt to the outside.

[0012] Preferably, a positioning hole is arranged on the pump body, the threaded hole is arranged on the bottom wall of the positioning hole, a second sealing ring is arranged on the second sealing pad, and the second sealing ring is embedded in the positioning hole.

[0013] By adopting the technical scheme, the leakage of brake oil from the connection between the oil inlet bolt and the threaded hole to the outside is prevented.

[0014] Preferably, a pressure plate is arranged on the head of the oil inlet bolt, the diameter of the pressure plate is greater than the diameter of the head of the oil inlet bolt, a first flat surface is arranged on the end of the oil pipe joint away from the pump body, the first sealing pad is arranged on the first flat surface, and the pressure plate presses the first sealing pad against the first flat surface.

[0015] By adopting the technical scheme, the pressure area of the first sealing pad is improved by the pressure plate and the first flat surface, the first sealing pad is uniformly pressed, the first sealing pad can better protect the oil inlet bolt and the oil pipe joint, the energy absorption and protection effect of the first sealing pad can be better played, the vibration during the motorcycle driving and transmission process is absorbed, thereby the vibration amplitude of the oil inlet bolt and the oil pipe joint is reduced, the wear of the contact surface of the two is reduced, and the service life of the two is prolonged.

[0016] Preferably, a first reference flat surface is arranged on the pump body, a second flat surface is arranged on the end of the oil pipe joint close to the pump body, the second sealing pad is arranged on the second flat surface, and the second sealing pad is pressed in the first reference flat surface.

[0017] By adopting the technical scheme, the cooperation between the second flat surface and the first reference flat surface can improve the pressure area of the second sealing pad, the second sealing pad is uniformly pressed, the energy absorption and protection effect of the second sealing pad can be better played, the vibration during the motorcycle driving and transmission process is absorbed, thereby the vibration amplitude of the oil inlet pipe joint and the pump body is reduced, the wear of the contact surface of the two is reduced, and the service life of the two is prolonged.

[0018] Preferably, the end of the oil pipe joint is spherical.

[0019] By adopting the above technical solution, the spherical end of the oil pipe joint can withstand greater pressure, allowing the oil inlet bolt to be screwed deeper into the threaded hole. This enables the oil inlet bolt to apply greater pressure, pressing the end of the oil pipe joint onto the pump body, thereby increasing the stability of the connection between the oil inlet bolt and the oil pipe joint, reducing vibration wear between the side wall of the mounting hole and the oil inlet bolt, and thus controlling the gap between the side wall of the mounting hole and the oil inlet bolt, preventing brake fluid from leaking from the gap.

[0020] Preferably, a connecting sleeve is fitted on the end of the oil pipe joint away from the oil inlet bolt, the connecting sleeve is provided with a plurality of annular protrusions, and a plurality of pressing grooves are provided on the surface of the connecting sleeve between the plurality of annular protrusions.

[0021] By adopting the above technical solution, when connecting the oil pipe connector to the oil pipe, the operator's fingers press between two adjacent annular protrusions and make the fingers contact the pressing groove. In this way, the installer can firmly grasp the oil pipe connector, making it very convenient to apply force for insertion and easily insert the oil pipe connector into the oil pipe, thereby reducing the difficulty of connecting the oil pipe connector to the oil pipe.

[0022] The main technical effects of this utility model are reflected in the following aspects:

[0023] 1. The present invention provides a new connection structure that integrates the oil inlet bolt and the oil pipe joint into one unit, thereby reducing the relative collision force generated by vibration and thus reducing wear at the connection point.

[0024] 2. This utility model incorporates two sealing gaskets to further enhance the sealing performance of the connection between the pump body, oil pipe joint, and oil inlet bolt. Simultaneously, the two sealing gaskets protect the connection points of the pump body, oil pipe joint, and oil inlet bolt, preventing vibration and wear at the pressure connection points.

[0025] 3. This utility model improves the energy absorption and protection effect of the two sealing gaskets by using the pressure plate and the cooperation of the first plane, the second plane and the first reference plane. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the motorcycle brake lower pump assembly of this application.

[0027] Figure 2 This is a schematic diagram of the pump body.

[0028] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0029] Figure 4 This is a structural diagram of the oil pipe joint and connecting sleeve.

[0030] Figure 5 This is a structural diagram of the oil inlet bolt.

[0031] Figure 6 yes Figure 1 Partial sectional view of the middle and lower pump assembly along line BB.

[0032] Reference numerals in the attached drawings: 1. Pump body; 11. Threaded hole; 12. Positioning hole; 13. First reference plane; 2. Oil pipe joint; 21. Mounting hole; 22. Threaded section; 23. First annular groove; 3. Oil inlet bolt; 31. First channel; 4. First sealing gasket; 41. First sealing ring; 5. Second sealing gasket; 52. Second sealing ring; 6. Pressure plate; 7. First plane; 8. Second plane; 9. Connecting sleeve; 91. Annular protrusion; 92. Pressing groove. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the accompanying drawings, so that the technical solution of the present application can be more easily understood and mastered.

[0034] Reference Figures 1-3 This embodiment of a motorcycle brake lower pump assembly includes a pump body 1, an oil pipe connector 2, an oil inlet bolt 3, a first sealing gasket 4, and a second sealing gasket 5. The pump body 1 has a first reference plane 13 and a positioning hole 12. The bottom wall of the positioning hole 12 has a threaded hole 11 that is threaded to the oil inlet bolt 3.

[0035] Reference Figure 1 and Figure 4 One end of the oil pipe connector 2 is spherical, and the other end of the oil pipe connector 2 is fitted with a connecting sleeve 9. Three annular protrusions 91 are fixed on the connecting sleeve 9. The three annular protrusions 91 are arranged along the length of the oil pipe connector 2, and multiple pressing grooves 92 are provided on the surface of the connecting sleeve 9 between the three annular protrusions 91.

[0036] Reference Figure 4 When connecting the oil pipe connector 2 to the oil pipe, the operator presses their fingers between the two adjacent annular protrusions 91 and makes their fingers contact the pressing groove 92. This allows the installer to firmly grasp the oil pipe connector 2, making it very convenient to apply force for insertion and easily insert the oil pipe connector 2 into the oil pipe, thereby reducing the difficulty of connecting the oil pipe connector 2 to the oil pipe.

[0037] Reference Figure 1 , Figure 4 and Figure 6Referring to the figure, a first plane 7 and a second plane 8 are provided on the opposite side walls of the spherical end of the oil pipe connector 2. The first plane 7 is located on the side of the second plane 8 away from the pump body 1. A mounting hole 21 is provided on the first plane 7, which penetrates the spherical end face of the oil pipe connector 2 and connects to the inner cavity of the oil pipe connector 2. A first sealing gasket 4 is attached to the first plane 7, and a second sealing gasket 5 is attached to the second plane 8. Both the first sealing gasket 4 and the second sealing gasket 5 have clearance holes, which are connected to the mounting hole 21. A threaded section 22 for connecting to the oil inlet bolt 3 is also provided on the side wall of the mounting hole 21. The threaded section 22 is located on the side of the inner cavity of the oil pipe connector 2 closer to the pump body 1.

[0038] Reference Figure 1 and Figure 5 The oil inlet bolt 3 has a first channel 31, and the head of the oil inlet bolt 3 has a pressure plate 6, the diameter of which is larger than the diameter of the head of the oil inlet bolt 3.

[0039] Reference Figure 1 , Figure 4 and Figure 6 A first annular groove 23 is formed on the side wall of the mounting hole 21 away from the pump body 1. A first sealing ring 41 is formed by a protrusion on the first sealing gasket 4 and is embedded in the first annular groove 23. A second sealing ring 52 is formed by a protrusion on the second sealing gasket 5 and is embedded in the positioning hole 12.

[0040] Reference Figures 1-6 During the installation of the lower pump assembly, first connect the oil pipe connector 2 to the oil pipe, then embed the second sealing ring 52 into the first ring groove 23, so that the second sealing gasket 5 abuts against the first reference plane 13. Then, hold the oil inlet bolt 3 so that it passes through the clearance hole of the first sealing gasket 4 and extends into the mounting hole 21. Next, rotate the oil inlet bolt 3 so that it is threaded into the threaded section 22 and the threaded hole 11 respectively, so that the first channel 31 connects the inner cavity of the oil pipe connector 2 and the inner cavity of the pump body 1. Finally, the pressure plate 6 will press the spherical end of the oil pipe connector 2 onto the pump body 1 through the first sealing gasket 4, and the second sealing gasket 5 will be pressed onto the pump body 1 by the spherical end of the oil pipe connector 2.

[0041] After the oil inlet bolt 3 is threaded to the threaded end, the oil inlet bolt 3 and the oil pipe connector 2 will become one. In this way, during the motorcycle's operation, the two will vibrate together and have similar vibration frequencies, which will reduce the collision and wear between the side wall of the mounting hole 21 and the oil inlet bolt 3, thereby controlling the gap between the side wall of the mounting hole 21 and the oil inlet bolt 3 and preventing brake fluid from leaking from the gap.

[0042] Meanwhile, the first sealing gasket 4 and the second sealing gasket 5 can further improve the sealing performance of the connection between the pump body 1, the oil pipe joint 2, and the oil inlet bolt 3. They also absorb the vibration during motorcycle operation, further reduce the vibration wear between the side wall of the mounting hole 21 and the oil inlet bolt 3, and further control the gap between the side wall of the mounting hole 21 and the oil inlet bolt 3, preventing brake fluid from leaking out of the gap.

[0043] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A motorcycle brake lower pump assembly, comprising a pump body (1), an oil pipe joint (2), an oil inlet bolt (3), a threaded hole (11) is formed in the pump body (1), an installation hole (21) is formed in the end of the oil pipe joint (2), the installation hole (21) is communicated with the inner cavity of the oil pipe joint (2), a first channel (31) is formed in the oil inlet bolt (3), the oil inlet bolt (3) passes through the installation hole (21) and is then screwed into the threaded hole (11), so that the first channel (31) is communicated with the inner cavity of the oil pipe joint (2) and the inner cavity of the pump body (1), characterized in that: The side wall of the mounting hole (21) is provided with a threaded section (22) connected with the oil inlet bolt (3), and the threaded section (22) is located at the side of the inner cavity of the oil pipe joint (2) close to the pump body (1).

2. A motorcycle brake caliper assembly according to claim 1, wherein: The two sides of the end of the oil pipe joint (2) are respectively provided with a first sealing gasket (4) and a second sealing gasket (5), the oil inlet bolt (3) passes through the first sealing gasket (4) and the second sealing gasket (5) respectively, the first sealing gasket (4) is located between the end of the oil pipe joint (2) and the head of the oil inlet bolt (3), and the second sealing gasket (5) is located between the end of the oil pipe joint (2) and the pump body (1).

3. A motorcycle brake caliper assembly according to claim 2, wherein: The side wall of the mounting hole (21) away from the pump body (1) is provided with a first ring groove (23), the first sealing gasket (4) is provided with a first sealing ring (41), and the first sealing ring (41) is embedded in the first ring groove (23).

4. A motorcycle brake caliper assembly according to claim 2, wherein: The pump body (1) is provided with a positioning hole (12), the threaded hole (11) is arranged on the bottom wall of the positioning hole (12), the second sealing gasket (5) is provided with a second sealing ring (52), and the second sealing ring (52) is embedded in the positioning hole (12).

5. A motorcycle brake caliper assembly according to claim 2, wherein: The head of the oil inlet bolt (3) is provided with a pressure plate (6), the diameter of the pressure plate (6) is greater than that of the head of the oil inlet bolt (3), the end of the oil pipe joint (2) away from the pump body (1) is provided with a first plane (7), the first sealing gasket (4) is arranged on the first plane (7), and the pressure plate (6) is arranged on the first plane (7). The first sealing gasket (4) is pressed tightly.

6. A motorcycle brake caliper assembly according to claim 2, wherein: The pump body (1) is provided with a first reference plane (13), the end of the oil pipe joint (2) close to the pump body (1) is provided with a second plane (8), the second sealing gasket (5) is arranged on the second plane (8), and the second sealing gasket (5) is pressed in the first reference plane (13).

7. A motorcycle brake caliper assembly as defined in claim 1 wherein: The end of the oil pipe joint (2) is spherical.

8. A motorcycle brake caliper assembly according to claim 1, wherein: The end of the oil pipe joint (2) away from the oil inlet bolt (3) is provided with a connecting sleeve (9), the connecting sleeve (9) is provided with a plurality of annular protrusions (91), and the surface of the connecting sleeve (9) between the plurality of annular protrusions (91) is provided with a plurality of pressing grooves (92).

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