Motorcycle brake lower pump

Abstract

The utility model discloses a motorcycle brake lower pump in the technical field of brake, which comprises a motorcycle brake lower pump, an oil inlet pipe is inserted into the side wall of the motorcycle brake lower pump, the oil inlet pipe is communicated with an oil storage cavity of the motorcycle brake lower pump, and internal threads are arranged on the inner side wall of the oil inlet pipe. The oil injection bolt is screwed into the end of the oil inlet pipe through threads, the outer side of the oil injection bolt is sleeved with the connecting ring, the oil conveying pipe is inserted into the side wall of the connecting ring, and the two sealing washers are installed on the outer side of the oil injection bolt and the outer side of the oil inlet pipe and arranged on the left side and the right side of the connecting ring respectively. According to the device, the sealing washer and the rubber ring are arranged on the two sides of the connecting ring, so that the two ends of the connecting ring can be blocked, the sealing performance of connection among the connecting ring, the oil injection bolt and the oil inlet pipe is guaranteed, external dust is prevented from entering the oil injection bolt, and the situation that an internal spring is polluted is prevented; and the situation of insensitive braking occurs.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a motorcycle brake lower pump. Background Technique

[0002] The motorcycle brake lower pump is installed outside the disc brake disc and connected to the brake pump through a fuel pipe. When the brake handle on the brake pump is pinched, the brake fluid in the brake pump will enter the brake lower pump through the fuel pipe and push the brake pads, making the brake pads fit and rub against the brake disc, thereby braking the motorcycle wheel;

[0003] However, for the existing motorcycle brake lower pump, the sealing performance of the inlet oil pipe is not good during installation, and external dust and other impurities are likely to enter the motorcycle brake lower pump, which easily causes the internal spring to be contaminated, resulting in insensitive braking. At the same time, there will also be a liquid leakage phenomenon, resulting in a decrease in the brake fluid and affecting the braking performance of the brake lower pump. Content of the Utility Model

[0004] The purpose of the utility model is to provide a motorcycle brake lower pump to solve the problems in the existing technology of the motorcycle brake lower pump mentioned in the above background technology, that is, the sealing performance of the inlet oil pipe is not good during installation, external dust and other impurities are likely to enter the motorcycle brake lower pump, which easily causes the internal spring to be contaminated, resulting in insensitive braking, and at the same time, there will also be a liquid leakage phenomenon, resulting in a decrease in the brake fluid and affecting the braking performance of the brake lower pump.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a motorcycle brake lower pump, including the motorcycle brake lower pump, the side wall of the motorcycle brake lower pump is inserted and installed with an inlet oil pipe, and the inlet oil pipe is communicated with the oil storage cavity of the motorcycle brake lower pump;

[0006] The inner side wall of the inlet oil pipe is provided with internal threads, a fuel injection bolt is screwed into the end of the inlet oil pipe, a connecting ring is sleeved outside the fuel injection bolt, a fuel delivery pipe is inserted and installed on the side wall of the connecting ring, sealing washers are installed on the outer sides of the fuel injection bolt and the inlet oil pipe, the two sealing washers are respectively arranged on the left and right sides of the connecting ring, a rubber ring is fitted on the side wall of the sealing washer, the cross section of the rubber ring is conical, the rubber ring can be inserted and installed in the connecting ring, and the side wall of the rubber ring is in contact with the inner wall of the connecting ring.

[0007] As a preference of the utility model, the fuel injection bolt includes a bolt body, an oil inlet and an empty groove. An empty groove is opened at the end of the bolt body, an oil inlet is opened on the outer side wall of the bolt body, the oil inlet is communicated with the empty groove, and the end of the bolt body with the empty groove is screwed into the inlet oil pipe.

[0008] Preferably, a convex ring is installed on the side wall of the sealing washer. A slot is formed on one side of the rubber ring close to the sealing washer. The cross-section of the slot is annular, and the convex ring can be inserted and installed in the slot.

[0009] Preferably, the oil delivery pipe includes a steel pipe, a connecting sleeve, a flexible rubber hose and a protective sleeve. One end of the steel pipe is inserted and installed on the side wall of the connecting ring. A connecting sleeve is installed at the other end of the steel pipe. One end of the flexible rubber hose is inserted and installed in the connecting sleeve. The other end of the flexible rubber hose is connected to an external brake pump. A protective sleeve is sleeved outside the connecting sleeve, and the protective sleeve can be sleeved outside the flexible rubber hose.

[0010] Preferably, the protective sleeve is a spiral steel strip.

[0011] Preferably, a fixing ring is installed on the outside of the flexible rubber hose, and one end of the protective sleeve located outside the flexible rubber hose is sleeved outside the fixing ring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By arranging the sealing washer and the rubber ring on both sides of the connecting ring of the device, the two ends of the connecting ring can be sealed, ensuring the sealing performance of the connection between the connecting ring, the oil injection bolt and the oil inlet pipe, preventing the entry of external dust, and preventing the internal spring from being contaminated, thus avoiding the situation of insensitive braking.

[0014] In addition, the device also has a convex ring arranged on the outside of the sealing washer. The rubber ring can be extruded by the convex ring, so that the rubber ring can be closely attached to the inner wall of the connecting ring, further improving the sealing performance of the connection between the connecting ring, the oil injection bolt and the oil inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of this patent;

[0016] Figure 2 is a schematic cross-sectional structural diagram of the connecting ring of this patent;

[0017] Figure 3 is a schematic cross-sectional structural diagram of the oil delivery pipe of this patent.

[0018] In the figure: 1 motorcycle brake lower pump, 2 oil inlet pipe, 3 oil injection bolt, 4 connecting ring, 5 oil delivery pipe, 6 sealing washer, 7 rubber ring, 8 convex ring, 9 slot, 10 fixing ring, 31 bolt body, 32 oil inlet, 33 empty slot, 51 steel pipe, 52 connecting sleeve, 53 flexible rubber hose, 54 protective sleeve. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0021] In this technical solution, a motorcycle brake lower pump includes a motorcycle brake lower pump 1. An oil inlet pipe 2 is inserted and installed on the side wall of the motorcycle brake lower pump 1, and the oil inlet pipe 2 is communicated with the oil storage cavity of the motorcycle brake lower pump 1;

[0022] The inner side wall of the oil inlet pipe 2 is provided with internal threads. At the end of the oil inlet pipe 2, an oil injection bolt 3 is screwed in through the threads. A connecting ring 4 is sleeved on the outer side of the oil injection bolt 3. An oil delivery pipe 5 is inserted and installed on the side wall of the connecting ring 4. Sealing washers 6 are installed on both the outer sides of the oil injection bolt 3 and the oil inlet pipe 2. The two sealing washers 6 are respectively arranged on the left and right sides of the connecting ring 4. A rubber ring 7 is fitted on the side wall of the sealing washer 6. The cross section of the rubber ring 7 is conical. The rubber ring 7 can be inserted and installed in the connecting ring 4, and the side wall of the rubber ring 7 is in contact with the inner wall of the connecting ring 4;

[0023] In this technical solution, the motorcycle brake lower pump 1 proposed in this article is a prior art. Its working principle is that by squeezing the brake handle inward, the piston in the brake pump pushes the brake fluid forward, thereby generating pressure in the oil circuit. This pressure is transmitted through the brake fluid to the piston in the motorcycle brake lower pump 1, and the piston then pushes the brake pads outward, causing the brake pads to rub against the inner surface of the brake disc, generating sufficient frictional force to reduce the rotational speed of the wheel and achieve the purpose of braking;

[0024] By arranging the sealing washers 6 and the rubber ring 7 on both sides of the connecting ring 4, it can seal the two ends of the connecting ring 4, ensure the sealing performance of the connection between the connecting ring 4, the oil injection bolt 3 and the oil inlet pipe 2, prevent the entry of external dust, and at the same time prevent the leakage of brake fluid, thereby avoiding the situation of insensitive braking due to the contamination of the internal spring or the lack of brake fluid.

[0025] In some technical solutions, the oil injection bolt 3 includes a bolt main body 31, an oil inlet 32 and an empty groove 33. An empty groove 33 is opened at the end of the bolt main body 31. An oil inlet 32 is opened on the outer side wall of the bolt main body 31. The oil inlet 32 is communicated with the empty groove 33. One end of the bolt main body 31 with the empty groove 33 is screwed into the oil inlet pipe 2.

[0026] In this technical solution, the brake fluid in the oil delivery pipe 5 will enter the connecting ring 4, then enter the empty groove 33 through the oil inlet 32 on the oil filling bolt 3, and then enter the inner cavity of the oil inlet pipe 2 and the motorcycle brake lower pump 1 through the empty groove 3.

[0027] In some technical solutions, a convex ring 8 is installed on the side wall of the sealing gasket 6, and a slot 9 is opened on one side of the rubber ring 7 close to the sealing gasket 6. The cross section of the slot 9 is annular, and the convex ring 8 can be inserted and installed in the slot 9.

[0028] In this technical solution, the rubber ring 7 can be extruded by the convex ring 8, so that the rubber ring 7 can be closely attached to the inner wall of the connecting ring 4, further improving the sealing performance of the connection between the connecting ring 4, the oil filling bolt 3 and the oil inlet pipe 2.

[0029] In some technical solutions, the oil delivery pipe 5 includes a steel pipe 51, a connecting sleeve 52, a flexible rubber hose 53 and a protective sleeve 54. One end of the steel pipe 51 is inserted and installed on the side wall of the connecting ring 4, and the other end of the steel pipe 51 is installed with a connecting sleeve 52. One end of the flexible rubber hose 53 is inserted and installed in the connecting sleeve 52. The other end of the flexible rubber hose 53 is connected to an external brake pump. A protective sleeve 54 is sleeved on the outside of the connecting sleeve 52, and the protective sleeve 54 can be sleeved on the outside of the flexible rubber hose 53.

[0030] In this technical solution, one end of the oil delivery pipe 5 connected to the connecting ring 4 uses a steel pipe 51, which can improve the connection stability between the two, and avoid the disconnection of the connection between the two due to external force. The steel pipe 51 and the external brake pump are connected through a flexible rubber hose 53, which can facilitate the arrangement of the pipeline and make it look neater. At the same time, a protective sleeve 54 is also provided on the outside of the flexible rubber hose 53, which can protect the connection between the flexible rubber hose 53 and the connecting pipe 52 and avoid the fracture of the connection between the flexible rubber hose 53 and the connecting pipe 52.

[0031] In some technical solutions, the protective sleeve 54 is a spiral steel strip.

[0032] In some technical solutions, a fixing ring 10 is installed on the outside of the flexible rubber hose 53, and one end of the protective sleeve 54 located outside the flexible rubber hose 53 is sleeved on the outside of the fixing ring 10.

[0033] In this technical solution, the setting of the fixing ring 10 can separate the protective sleeve 54 from the flexible rubber hose 53, avoiding damage to the flexible rubber hose 53 caused by the end of the protective sleeve 54.

[0034] Working principle: First, the connecting ring 4 is sleeved outside the oil injection bolt 3, and the rubber ring 7 outside the oil injection bolt 3 is inserted into the connecting ring 4. Then, by screwing the oil injection bolt 3 into the oil inlet pipe 2, the rubber ring 7 outside the oil inlet pipe 2 is also inserted into the connecting ring 4. At this time, both sides of the connecting ring 4 are closely attached to the two sealing washers 6, ensuring the sealing of the connection among the connecting ring 4, the oil injection bolt 3, and the oil inlet pipe 2. While preventing the entry of external dust, it can also prevent the leakage of brake fluid, thus avoiding the situation of insensitive braking due to the contamination of the internal spring or the lack of brake fluid.

[0035] When braking through this device, by squeezing the external motorcycle brake handle inward, the piston in the brake pump pushes the brake fluid forward, thus generating pressure in the oil circuit. This pressure is transmitted through the brake fluid to the piston in the motorcycle brake slave cylinder 1, and the piston then pushes the brake pads in the motorcycle brake slave cylinder 1 outward, causing the brake pads to rub against the inner surface of the brake disc, generating sufficient frictional force to reduce the rotational speed of the wheel and achieve the purpose of braking.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0037] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way. The reason for not exhaustively describing the situations of these combinations in this specification is only to save space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A motorcycle brake pump, comprising a motorcycle brake pump (1), characterized in that: An oil inlet pipe (2) is inserted into the side wall of the motorcycle brake pump (1), and the oil inlet pipe (2) is connected to the oil storage chamber of the motorcycle brake pump (1); The inner wall of the oil inlet pipe (2) is provided with an internal thread. An oil injection bolt (3) is screwed into the end of the oil inlet pipe (2) through the thread. A connecting ring (4) is sleeved on the outer side of the oil injection bolt (3). An oil delivery pipe (5) is inserted and installed on the side wall of the connecting ring (4). Sealing gaskets (6) are installed on the outer sides of the oil injection bolt (3) and the oil inlet pipe (2). Two sealing gaskets (6) are respectively arranged on the left and right sides of the connecting ring (4). A rubber ring (7) is fitted on the side wall of the sealing gasket (6). The cross section of the rubber ring (7) is conical. The rubber ring (7) can be inserted and installed in the connecting ring (4). The side wall of the rubber ring (7) is in contact with the inner wall of the connecting ring (4).

2. A motorcycle brake pump according to claim 1, characterized in that: The oil filling bolt (3) comprises a bolt body (31), an oil inlet (32) and an empty groove (33); the empty groove (33) is provided at the end of the bolt body (31); the oil inlet (32) is provided on the outer wall of the bolt body (31); the oil inlet (32) is communicated with the empty groove (33); and one end of the bolt body (31) provided with the empty groove (33) is screwed into and installed in the oil inlet pipe (2).

3. The motorcycle brake pump according to claim 1, characterized in that: A convex ring (8) is installed on the side wall of the sealing gasket (6), and a slot (9) is provided on the side of the rubber ring (7) close to the sealing gasket (6). The cross section of the slot (9) is annular, and the convex ring (8) can be inserted and installed in the slot (9).

4. The motorcycle brake pump according to claim 1, characterized in that: The oil delivery pipe (5) comprises a steel pipe (51), a connecting sleeve (52), a flexible rubber hose (53) and a protective sleeve (54). One end of the steel pipe (51) is inserted and installed on the side wall of the connecting ring (4). The other end of the steel pipe (51) is installed with a connecting sleeve (52). One end of the flexible rubber hose (53) is inserted and installed in the connecting sleeve (52). The other end of the flexible rubber hose (53) is connected to an external brake pump. The outer side of the connecting sleeve (52) is sleeved with a protective sleeve (54), and the protective sleeve (54) can be sleeved on the outer side of the flexible rubber hose (53).

5. A motorcycle brake pump according to claim 4, characterized in that: The protective sleeve (54) is a spiral steel belt.

6. A motorcycle brake pump according to claim 4, characterized in that: A fixing ring (10) is installed on the outer side of the flexible rubber hose (53), and one end of the protective sleeve (54) located on the outer side of the flexible rubber hose (53) is sleeved on the outer side of the fixing ring (10).

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