Novel brake pump for electric vehicle

Abstract

The novel brake pump comprises an upper pump body and a lower pump body, the upper pump body is installed on a handlebar, the lower pump body is installed at a tire of a frame, and the upper pump body and the lower pump body are communicated through an oil pipe; the upper pump comprises a handle, a pump body, an oil box and a mounting rack, the pump body is mounted on the mounting rack, the handle is rotatably mounted on the mounting rack, and the oil box is arranged on the pump body and communicates with the pump body; the oil pump further comprises a connecting assembly, the connecting assembly comprises a connector and a fixing sleeve, one end of the connector is fixedly connected with the pump body and communicated with the interior of the pump body, first internal threads are arranged on the outer circumferential face of the other end of the connector, first external threads matched with the first internal threads are arranged in an inner hole in one end of the oil pipe, and the oil pipe is sleeved with the fixing sleeve. A second internal thread is arranged on the outer circumferential face of the oil pipe, and a second external thread matched with the second internal thread is arranged on the inner ring of the fixing sleeve. Oil leakage at the joint of the oil pipe and the pump body can be effectively prevented, and the brake performance is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of brake pumps, and particularly to a new type of electric vehicle brake pump. Background Art

[0002] The braking system consists of a control system, a hydraulic system, and an assist system. The control system includes pedals, handbrakes, etc. The hydraulic system consists of hydraulic oil, a brake pump, and hydraulic hoses. Hydraulic oil is the hydraulic medium used in a hydraulic system that utilizes the pressure energy of a liquid and plays roles such as energy transfer, system lubrication, anti-corrosion, rust prevention, and cooling in the hydraulic system. For hydraulic oil, it should first meet the requirements for the liquid viscosity at the working temperature and starting temperature of the hydraulic device. Since the viscosity change of the oil is directly related to hydraulic actions, transmission efficiency, and transmission accuracy, it is also required that the viscosity-temperature performance and shear stability of the oil should meet various requirements put forward for different uses.

[0003] Currently, most electric vehicle oil pressure brake upper pumps and lower pumps on the market are connected through hoses. When braking, the upper pump squeezes the hydraulic oil in the pump body into the lower pump through the hose to achieve braking. However, since there is a certain pressure when the hydraulic oil is squeezed from the pump body into the hose during braking, it will cause the connection between the hose and the pump body to be prone to oil leakage, affecting the braking performance. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a new type of electric vehicle brake pump. By providing a connection assembly, the connection assembly includes a connection head and a fixing sleeve. The hose is connected to the connection head by a threaded connection method, and then the fixing sleeve further fixes the connection between the hose and the connection head by a threaded connection method, which can effectively prevent oil leakage at the connection between the hose and the pump body and ensure the braking performance.

[0005] The technical solution provided by the present invention to solve the above problems is: a new type of electric vehicle brake pump, including an upper pump and a lower pump. The upper pump is installed on the handlebar of the vehicle, and the lower pump is installed at the tire of the vehicle frame. The upper pump and the lower pump are connected through a hose. The upper pump includes a handle, a pump body, an oil box, and a mounting bracket. The pump body is installed on the mounting bracket, the handle is rotatably installed on the mounting bracket, and the oil box is arranged on the pump body and communicated with the pump body. It further includes a connection assembly. The connection assembly includes a connection head and a fixing sleeve. One end of the connection head is fixedly connected to the pump body and communicated with the inside of the pump body. An internal thread one is provided on the outer circumferential surface of the other end of the connection head. An external thread one that cooperates with the internal thread one is provided in the inner hole of one end of the hose. The fixing sleeve is sleeved on the hose. An internal thread two is provided on the outer circumferential surface of the hose, and an external thread two that cooperates with the internal thread two is provided on the inner ring of the fixing sleeve.

[0006] Preferably, both the first internal thread and the first external thread are square threads.

[0007] Preferably, both the second internal thread and the second external thread are square threads.

[0008] Preferably, a limit ring is provided on the connector, and one end of the limit ring can abut against the oil pipe.

[0009] Preferably, an installation groove is provided on the connector, a sealing ring is provided in the installation groove, and the outer circumferential surface of the sealing ring cooperates with the inner circle of the oil pipe for sealing.

[0010] Preferably, a sealing assembly is further included, and the sealing assembly is used to improve the sealing effect between the connector and the oil pipe.

[0011] Preferably, the sealing assembly includes a flexible deformation ring, a pressing ring and a driving mechanism. The driving mechanism is in transmission connection with the handle. The flexible deformation ring is sleeved on the oil pipe, the pressing ring is sleeved on the flexible deformation ring, and the driving mechanism is used to drive the pressing ring to press the flexible deformation ring so that the flexible deformation ring deforms to press the oil pipe, thereby improving the sealing effect between the oil pipe and the connector.

[0012] Preferably, the driving mechanism includes a driving ring, a connecting ring, a connecting rope and a plurality of connecting rods. The driving ring is sleeved on the oil pipe and is in transmission connection with the pressing ring. The connecting rods are installed on the outer circumferential surface of the driving ring. One end of the connecting rod away from the driving ring is connected to the inner circle of the connecting ring. One end of the connecting rope is connected to the connecting ring, and the other end is connected to the handle.

[0013] Preferably, the outer circumferential surface of the flexible deformation ring is a first conical surface, and the inner circle of the pressing ring is a second conical surface that cooperates with the first conical surface.

[0014] Preferably, the driving mechanism further includes a spring. The spring is sleeved on the oil pipe, one end of the spring is fixedly connected to the driving ring, and the other end is fixedly connected to the pressing ring.

[0015] Compared with the prior art, the advantages of the present invention are as follows: By providing a connection assembly, the connection assembly includes a connector and a fixed sleeve. The oil pipe and the connector are connected by a threaded connection method, and then the fixed sleeve further fixes the connection between the oil pipe and the connector by a threaded connection method, which can effectively prevent oil leakage at the connection between the oil pipe and the pump body and ensure the braking performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a sectional view of the present invention; Figure 3 is Figure 2 an enlarged schematic view of part A in Figure 4 is Figure 3 an enlarged schematic view of part B in Figure 5 is a sectional view showing the cooperation of the flexible deformation ring and the extrusion ring of the present invention; Figure 6 is a schematic diagram of the driving mechanism of the present invention.

[0018] Reference numerals in the drawings: 1. Pump body, 2. Handle, 3. Mounting bracket, 4. Connecting ring, 5. Oil pipe, 6. Connecting rope, 7. Oil box, 8. Connecting rod, 9. Driving ring, 10. Spring, 11. Connecting head, 12. Fixed sleeve, 13. Second external thread, 14. First external thread, 15. Extrusion ring, 16. First conical surface, 17. Sealing ring, 18. Flexible deformation ring, 19. Second conical surface, 20. Limiting ring. Detailed implementation manners

[0019] The following will, in conjunction with the drawings and embodiments, elaborate in detail on the implementation manners of the present invention, so as to fully understand the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects and implement accordingly.

[0020] In the description of the present invention, it should be noted that for orientation terms, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present invention.

[0021] In addition, for the terms "first" and "second", they are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise specifically defined.

[0022] In the present invention, unless otherwise clearly specified and defined, terms such as "assembled", "connected", and "joined" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or connected through an intermediate medium, and can be internally connected and communicated between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0024] It should also be understood that the terms used in the specification of the embodiments of the present invention are merely for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0025] A specific embodiment of the present invention is shown in the accompanying drawings. A new type of brake pump for an electric vehicle includes an upper pump and a lower pump. The upper pump is installed on the handlebar 2, and the lower pump is installed at the frame tire. The upper pump and the lower pump are connected through an oil pipe 5; the upper pump includes a handle 2, a pump body 1, an oil box 7, and a mounting bracket 3. The pump body 1 is installed on the mounting bracket 3, the handle 2 is rotatably installed on the mounting bracket 3, and the oil box 7 is arranged on the pump body 1 and communicated with the pump body 1. It further includes a connection assembly. The connection assembly includes a connection head 11 and a fixed sleeve 12. One end of the connection head 11 is fixedly connected to the pump body 1 and communicated with the inside of the pump body 1. An internal thread one is provided on the outer circumferential surface of the other end of the connection head 11. An external thread one 14 that cooperates with the internal thread one is provided in the inner hole of one end of the oil pipe 5. The fixed sleeve 12 is sleeved on the oil pipe 5. An internal thread two is provided on the outer circumferential surface of the oil pipe 5, and an external thread two 13 that cooperates with the internal thread two is provided on the inner ring of the fixed sleeve 12.

[0026] In the above solution, by providing a connection assembly, the connection assembly includes a connection head and a fixed sleeve. The oil pipe and the connection head are connected by a threaded connection method, and then the fixed sleeve further fixes the connection between the oil pipe and the connection head by a threaded connection method, which can effectively prevent oil leakage at the connection between the oil pipe and the pump body and ensure the braking performance.

[0027] It should be noted that, in order to reduce damage to the hose, the internal thread 1 and the external thread 1 14 are both square threads; the internal thread 2 and the external thread 2 13 are both square threads. The square thread positioning process has good stability and can effectively reduce damage to the hose.

[0028] In this embodiment, in order to limit the axial position of the oil pipe, a limiting ring 20 is provided on the connector 11 , and one end of the limiting ring 20 can abut against the oil pipe 5 .

[0029] As another embodiment of the present invention, a mounting groove is provided on the connector 11 , a sealing ring 17 is provided in the mounting groove, and the outer circumferential surface of the sealing ring 17 cooperates with the inner ring of the oil pipe 5 for sealing.

[0030] As another embodiment of the present invention, a sealing assembly is further included, and the sealing assembly is used to improve the sealing effect between the connector 11 and the oil pipe 5 .

[0031] In this embodiment, specifically, the sealing assembly includes a flexible deformation ring 18, an extrusion ring 15 and a driving mechanism, the driving mechanism is connected to the handle 2 in a transmission manner, the flexible deformation ring 18 is sleeved on the oil pipe 5, the extrusion ring 15 is sleeved on the flexible deformation ring 18, and the driving mechanism is used to drive the extrusion ring 15 to squeeze the flexible deformation ring 18 so that the flexible deformation ring 18 is deformed to squeeze the oil pipe 5, thereby improving the sealing effect between the oil pipe 5 and the connector 11. Further, the driving mechanism includes a driving ring 9, a connecting ring 4, a connecting rope 6 and a plurality of connecting rods 8, the driving ring 9 is sleeved on the oil pipe 5 and is connected to the extrusion ring 15 in a transmission manner, the connecting rod 8 is installed on the outer circumferential surface of the driving ring 9, the end of the connecting rod 8 away from the driving ring 9 is connected to the inner ring of the connecting ring 4, one end of the connecting rope 6 is connected to the connecting ring 4, and the other end is connected to the handle 2.

[0032] The matching mode between the flexible deformation ring and the extrusion ring is as follows: the outer circumferential surface of the flexible deformation ring 18 is a conical surface 16, and the inner ring of the extrusion ring 15 is a conical surface 2 19 matching the conical surface 16. When the extrusion ring extrudes the flexible deformation ring, the conical surface 1 and the conical surface 2 are relatively displaced, so that the flexible deformation ring is deformed. It should be noted that the flexible deformation ring can be made of rubber material.

[0033] In this embodiment, further, the driving mechanism further includes a spring 10, which is sleeved on the oil pipe 5, one end of which is fixedly connected to the driving ring 9, and the other end of which is fixedly connected to the extrusion ring 15. The spring can buffer the tension of the pull rope and reduce the probability of damage to the sealing assembly.

[0034] Among them, it should be noted that the position of the flexible deformation ring corresponds to the position of the sealing ring, that is, when the flexible deformation ring deforms, it squeezes the oil pipe, and the sealing ring deforms more greatly, thereby improving the sealing effect between the connector 11 and the oil pipe 5.

[0035] In the above solution, when the electric vehicle brakes, first, the handle is rotated. During the rotation of the handle, on the one hand, the hydraulic oil in the pump body is squeezed into the lower pump through the oil pipe, and on the other hand, the pull rope is driven to pull the connecting ring towards the direction of the handle. The connecting ring then drives the driving ring to compress the spring, and the spring drives the extrusion ring to squeeze the flexible deformation ring to make the flexible deformation ring deform. When the flexible deformation ring deforms, it squeezes the oil pipe, and the sealing ring deforms more greatly, thereby improving the sealing effect between the connector and the oil pipe. When the handle is released, the extrusion ring loses the driving force and returns to its original state; in this solution, when braking, the sealing effect of the sealing component can be improved following the rotation of the handle. After braking is completed, the sealing effect of the component returns to the initial state. On the one hand, it can ensure the sealing effect and effectively prevent oil leakage, and on the other hand, it can effectively prevent the sealing ring from failing due to being in a large deformation state for a long time.

[0036] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A new brake pump for an electric vehicle, comprising an upper pump and a lower pump, wherein the upper pump is mounted on a handlebar (2), and the lower pump is mounted on a frame tire, and the upper pump and the lower pump are connected via an oil pipe (5); characterized in that: The upper pump comprises a handle (2), a pump body (1), an oil box (7) and a mounting frame (3); the pump body (1) is mounted on the mounting frame (3); the handle (2) is rotatably mounted on the mounting frame (3); and the oil box (7) is arranged on the pump body (1) and is in communication with the pump body (1); The invention also comprises a connection assembly, wherein the connection assembly comprises a connection head (11) and a fixed sleeve (12); one end of the connection head (11) is fixedly connected to the pump body (1) and communicates with the interior of the pump body (1); an inner thread (1) is arranged on the outer circumferential surface of the other end of the connection head (11); an outer thread (14) matching with the inner thread (1) is arranged in the inner hole of one end of the oil pipe (5); the fixed sleeve (12) is sleeved on the oil pipe (5); an inner thread (2) is arranged on the outer circumferential surface of the oil pipe (5); and an outer thread (13) matching with the inner thread (2) is arranged on the inner ring of the fixed sleeve (12).

2. A new type of brake pump for electric vehicles according to claim 1, characterized in that: The internal thread 1 and the external thread 1 (14) are both square threads.

3. A new type of brake pump for electric vehicles according to claim 2, characterized in that: The second internal thread and the second external thread (13) are both square threads.

4. The new brake pump for electric vehicles according to claim 1, characterized in that: A limit ring (20) is provided on the connector (11), and one end of the limit ring (20) can abut against the oil pipe (5).

5. The new brake pump for electric vehicles according to claim 1, characterized in that: The connector (11) is provided with a mounting groove, a sealing ring (17) is provided in the mounting groove, and the outer circumferential surface of the sealing ring (17) cooperates with the inner ring of the oil pipe (5) to perform sealing.

6. The new brake pump for electric vehicles according to claim 5, characterized in that: It also comprises a sealing component, which is used to improve the sealing effect between the connecting head (11) and the oil pipe (5).

7. The new brake pump for electric vehicles according to claim 6, characterized in that: The sealing assembly comprises a flexible deformable ring (18), an extrusion ring (15) and a driving mechanism, wherein the driving mechanism is in transmission connection with the handle (2), the flexible deformable ring (18) is sleeved on the oil pipe (5), the extrusion ring (15) is sleeved on the flexible deformable ring (18), and the driving mechanism is used to drive the extrusion ring (15) to squeeze the flexible deformable ring (18), so that the flexible deformable ring (18) is deformed to squeeze the oil pipe (5), thereby improving the sealing effect between the oil pipe (5) and the connector (11).

8. The new brake pump for electric vehicles according to claim 7, characterized in that: The driving mechanism comprises a driving ring (9), a connecting ring (4), a connecting rope (6) and a plurality of connecting rods (8); the driving ring (9) is sleeved on the oil pipe (5) and is drivingly connected to the extrusion ring (15); the connecting rods (8) are mounted on the outer circumferential surface of the driving ring (9); one end of the connecting rods (8) away from the driving ring (9) is connected to the inner ring of the connecting ring (4); one end of the connecting rope (6) is connected to the connecting ring (4) and the other end is connected to the handle (2).

9. The new brake pump for electric vehicles according to claim 8, characterized in that: The outer circumferential surface of the flexible deformation ring (18) is a first conical surface (16), and the inner ring of the extrusion ring (15) is a second conical surface (19) that matches the first conical surface (16).

10. The new brake pump for electric vehicles according to claim 8, characterized in that: The driving mechanism further comprises a spring (10), wherein the spring (10) is sleeved on the oil pipe (5), one end of the spring (10) is fixedly connected to the driving ring (9), and the other end of the spring (10) is fixedly connected to the extrusion ring (15).

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