Electromagnetic brake upper pump assembly

Abstract

The utility model relates to the technical field of hand brake pumps, and discloses an electromagnetic brake upper pump assembly which comprises an upper pump assembly shell, a main cylinder is arranged in the upper pump assembly shell, a pressure reducing valve outlet is formed in the inner side of the main cylinder, and a pressure reducing valve mounting hole and a pressure increasing valve mounting hole are formed in the upper pump assembly shell. According to the electromagnetic brake upper pump assembly, the production cost, the material cost and the assembling cost are remarkably reduced through the design innovation, the novel electromagnetic hand brake design structure is more compact, the functions of the hand brake and the control unit are integrated, it means that the layout of the whole brake system can be more flexible, the limited space in a vehicle is saved, and meanwhile the electromagnetic brake upper pump assembly is convenient to use. Due to the fact that the system structure is simplified, inspection and maintenance can be conducted more quickly during maintenance, the service efficiency is improved, the electromagnetic valve is arranged on the side face of the main cylinder, the oil outlet is formed in the lower side of the hand brake, the total length of an oil way is shortened, the assembly structure is optimized, and the size of the upper pump is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of handbrake pump technology, specifically to an electromagnetic brake upper pump assembly. Background Technology

[0002] The electromagnetic brake booster assembly is a key component of an electromagnetic braking system. Its main function is to control the pressure delivery of brake fluid through electromagnetic action, thereby achieving vehicle braking. An electromagnetic brake booster assembly typically includes the following main parts: a solenoid valve, a piston and push rod, and a reservoir. The working principle of the electromagnetic brake booster assembly is as follows: When the driver presses the brake lever, the push rod and piston move, pressurizing the brake fluid into the brake lines. The pressure is regulated by a booster valve and a depressurizer valve, allowing brake fluid to flow to the wheel ends, generating braking force and preventing wheel lock-up.

[0003] However, in actual operation, the inventors found the following problems: In the prior art, the independent arrangement of the handbrake and hydraulic control block, although it ensures the effect of the braking system to a certain extent, also exposes several defects that urgently need to be improved. First, the existing arrangement leads to complex system connections, usually requiring four pipes to connect the handbrake to the hydraulic control block, and the control block to the front and rear wheel calipers. This not only increases the complexity of the system, but also significantly increases the difficulty of installation and maintenance. Moreover, as the number of pipes increases, the risk of leakage in the system also increases. During vehicle use, even a small leakage problem may lead to serious safety hazards, affecting the normal use and driving safety of the vehicle. Second, the independent hydraulic control unit requires additional materials and manufacturing processes, which increases the overall production cost.

[0004] Based on this, the present invention provides an electromagnetic brake upper pump assembly. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an electromagnetic brake upper pump assembly, which features the advantages of arranging the solenoid valve on the side of the master cylinder and the oil outlet on the lower side of the handbrake, thus shortening the total length of the oil circuit, optimizing the assembly structure, and further reducing the size of the upper pump, thereby solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: an electromagnetic brake upper pump assembly, including an upper pump assembly housing, a main cylinder is provided inside the upper pump assembly housing, a pressure reducing valve outlet is provided on the inner side of the main cylinder, a pressure reducing valve mounting hole and a pressure boosting valve mounting hole are provided inside the upper pump assembly housing, a pressure reducing valve is installed inside the pressure reducing valve mounting hole, a pressure boosting valve is installed inside the pressure boosting valve mounting hole, the right side of the pressure reducing valve is connected to the pressure reducing valve outlet, the bottom side of the pressure reducing valve is connected to the pressure reducing valve inlet, the other end of the pressure reducing valve inlet is connected to the pressure boosting valve, an oil outlet is provided at the bottom of the upper pump assembly housing, the oil outlet is connected to the pressure boosting valve, a piston cylinder is provided inside the upper pump assembly housing, a pressure boosting valve inlet is provided on the left side of the piston cylinder, the pressure boosting valve inlet is connected to the pressure boosting valve, two sets of coil mounting holes are provided on the right side of the upper pump assembly housing, the two sets of coil mounting holes are respectively connected to the pressure boosting valve and the pressure reducing valve.

[0007] Preferably, the front side of the upper pump assembly housing is provided with an exhaust port and an oil inlet, and the exhaust port is located to the right of the oil inlet.

[0008] Preferably, a brake handle connecting bracket is fixedly installed on the left side of the upper pump assembly housing, and the brake handle connecting bracket has a handle hinge end.

[0009] Preferably, a retaining ring mounting hole is provided on the left side of the upper pump assembly housing.

[0010] Preferably, a handbrake upper pump mounting bracket is fixedly installed on the top of the upper pump assembly housing.

[0011] Preferably, the front side of the upper pump assembly housing is provided with three sets of main cylinder cover fixing holes, and the three sets of main cylinder cover fixing holes are distributed in a triangular pattern.

[0012] Preferably, the top of the upper pump assembly housing is provided with two sets of handbrake upper pump fixing holes, and the two sets of handbrake upper pump fixing holes are symmetrically distributed.

[0013] Preferably, the back of the upper pump assembly housing is provided with a brake sensor mounting hole one and a brake sensor mounting hole two.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This electromagnetic brake upper pump assembly integrates the electromagnetic handbrake control unit directly into the handbrake assembly. This design effectively reduces the number of connection joints between the hydraulic control block and the control unit. The four pipelines used in the existing technology can be simplified to only two in the new layout, thus significantly reducing the connection points between components. This change not only simplifies the system structure but also effectively reduces the risk of leakage at the joints, improving the reliability of the braking system. In the existing technology, the hydraulic control unit is a separate component, which increases material and manufacturing costs. The new technology integrates the control unit with the electromagnetic handbrake, eliminating the need for a separate hydraulic control unit. This design innovation significantly reduces production, material, and assembly costs. The new electromagnetic handbrake design is more compact, combining the functions of the handbrake and control unit. This means that the layout of the entire braking system can be more flexible, saving limited space inside the vehicle. At the same time, due to the simplification of the system structure, maintenance can be carried out more quickly, improving service efficiency. Placing the solenoid valve on the side of the master cylinder and the oil outlet on the lower side of the handbrake shortens the total length of the oil circuit, optimizes the assembly structure, and further reduces the size of the upper pump. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the bottom structure;

[0018] Figure 3 This utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 4 This utility model Figure 1 A top-view structural diagram.

[0020] In the diagram: 1. Upper pump assembly housing; 2. Oil outlet; 3. Brake handle connecting bracket; 4. Handle hinge end; 5. Exhaust port; 6. Oil inlet; 7. Handbrake upper pump mounting bracket; 8. Master cylinder cover fixing hole; 9. Coil mounting hole; 10. Pressure reducing valve inlet; 11. Pressure reducing valve mounting hole; 12. Pressure reducing valve outlet; 13. Master cylinder; 14. Snap ring mounting hole; 15. Piston cylinder; 16. Booster valve inlet; 17. Booster valve mounting hole; 18. Brake sensor mounting hole one; 19. Brake sensor mounting hole two; 20. Handbrake upper pump fixing hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] The electromagnetic brake booster assembly is a key component of an electromagnetic braking system. Its main function is to control the pressure delivery of brake fluid through electromagnetic action, thereby achieving vehicle braking. An electromagnetic brake booster assembly typically includes the following main parts: a solenoid valve, a piston and pushrod, a reservoir, and a coil.

[0024] Solenoid valves: Solenoid valves are actuators that regulate brake fluid pressure. They can adjust brake pressure and prevent wheel lock-up. Solenoid valves include pressure boosting valves and pressure reducing valves. The valves only have two states: on and off. The pressure boosting valve is a normally open valve, which is open by default. It is only energized to close when the wheel tends to lock up due to braking pressure, so as to maintain the braking pressure in the brake line. The pressure reducing valve is a normally closed valve, which is closed by default. When the wheel is about to lock up, it is energized to open, so that the brake fluid in the pressure boosting line is discharged through the outlet of the pressure reducing valve, the braking pressure is reduced, and the wheel speed begins to recover.

[0025] Piston and pushrod: The piston and pushrod are pushed by the brake handle to deliver brake fluid pressure to the wheel end. When the brake handle is pressed, the piston transmits force through the pushrod to deliver brake fluid pressure to the wheel cylinder, thereby achieving vehicle braking.

[0026] The brake fluid reservoir is used to store brake fluid, ensuring that the braking system has a sufficient supply of braking medium. When the braking system needs to brake, the brake fluid in the master cylinder enters the brake lines through the push rod.

[0027] Coil: The main function of the coil is to generate magnetic force, thereby controlling the operation of the braking system. Specifically, the coil in the electromagnetic brake pump assembly generates electromagnetic force to control the flow and pressure of the brake fluid, thus achieving the braking function. In an electromagnetic brake system, the coil generates magnetic force when energized. This magnetic force can close the pressure booster valve and open the pressure relief valve, thereby controlling the flow and pressure of the brake fluid.

[0028] Electromagnetic brake upper pump assemblies are used in various two-wheeled vehicles requiring anti-lock braking systems, such as electric bicycles and motorcycles. Their advantages include fast response, strong braking force, and short braking distance.

[0029] While the independent arrangement of the handbrake and hydraulic control block in the existing technology ensures the effectiveness of the braking system to a certain extent, it also exposes several shortcomings that urgently need improvement. First, the existing arrangement leads to complex system connections, typically requiring four pipelines to connect the handbrake to the hydraulic control block, and the control block to the front and rear wheel calipers. This not only increases the complexity of the system but also significantly increases the difficulty of installation and maintenance. Moreover, with the increase in the number of pipelines, the risk of leakage within the system also increases. During vehicle use, even minor leakage problems can lead to serious safety hazards, affecting the normal use and driving safety of the vehicle. Second, the independent hydraulic control unit requires additional materials and manufacturing processes, which invisibly increases the overall production cost.

[0030] Please see Figure 1-4An electromagnetic brake upper pump assembly includes an upper pump assembly housing 1. A master cylinder 13 is housed inside the upper pump assembly housing 1. A pressure reducing valve outlet 12 is opened on the inner side of the master cylinder 13. Two sets of coil mounting holes 9 are opened on the right side of the upper pump assembly housing 1. The two sets of coil mounting holes 9 respectively have a pressure reducing valve mounting hole 11 and a pressure boosting valve mounting hole 17. A pressure reducing valve is installed inside the pressure reducing valve mounting hole 11, and a pressure boosting valve is installed inside the pressure boosting valve mounting hole 17. The right side of the pressure reducing valve is connected to the pressure reducing valve outlet 12. A pressure reducing valve inlet 10 is connected to the bottom side of the pressure reducing valve. The other end of the pressure reducing valve inlet 10 is connected to the pressure boosting valve. An outlet 2 is provided at the bottom of the upper pump assembly housing 1, and the outlet 2 is connected to the pressure boosting valve. The upper pump assembly housing 1 houses a piston cylinder 15. A booster valve inlet 16 is located on the left side of the piston cylinder 15, connected to a booster valve. When the brake lever is pressed, it rotates along the lever hinge end 4, activating the brake sensor. The vehicle system receives the brake signal. Pressing the lever pushes the piston rod to move along the axis of the piston cylinder 15. The Y-shaped piston pressurizes the brake fluid in the cylinder, causing it to flow through the booster valve inlet 16 and through the outlet 2 to the caliper end, achieving braking. The pressure relief valve switches between open and closed states depending on the vehicle status. When open, the brake fluid can flow back to the master cylinder through the pressure relief valve outlet 12, achieving pressure relief at the wheel end. The coil mounting hole 9... The coil is powered by an external lead, thereby controlling the opening and closing of the solenoid valve. When braking ends and the handle is released, the return spring pushes the piston rod back to its original position. At this time, a negative pressure is generated in the cylinder, and brake fluid can be replenished to the piston cylinder 15 through the inlet 6. At the end point, the retaining ring in the retaining ring mounting hole 14 can limit the piston rod. By directly integrating the control unit of the electromagnetic handbrake into the handbrake assembly, this design effectively reduces the number of connection joints between the electromagnetic handbrake and the hydraulic control block. The four pipelines used in the prior art can be simplified to only two in the new layout. Therefore, the connection points between the components are significantly reduced. This change not only simplifies the system structure but also effectively reduces the risk of leakage at the joints. The new technology improves the reliability of the braking system. In existing technologies, the hydraulic control unit is a separate component, which increases material and manufacturing costs. The new technology integrates the control unit with the electromagnetic handbrake, eliminating the need for a separate hydraulic control unit. This design innovation significantly reduces production, material, and assembly costs, enabling manufacturers to maintain stronger price competitiveness in a highly competitive market. The new electromagnetic handbrake design is more compact, integrating the functions of the handbrake and control unit. This means that the layout of the entire braking system can be more flexible, saving limited space inside the vehicle. At the same time, due to the simplified system structure, maintenance can be carried out more quickly, improving service efficiency.

[0031] The upper pump assembly housing 1 has an exhaust port 5 and an oil inlet 6 on its front side, with the exhaust port 5 located to the right of the oil inlet 6. A brake handle connecting bracket 3 is fixedly installed on the left side of the upper pump assembly housing 1, and the brake handle connecting bracket 3 has a handle hinge end 4. A snap ring mounting hole 14 is provided on the left side of the upper pump assembly housing 1. A handbrake upper pump mounting bracket 7 is fixedly installed on the top of the upper pump assembly housing 1. Three sets of master cylinder upper cover fixing holes 8 are provided on the front side of the upper pump assembly housing 1, and the three sets of master cylinder upper cover fixing holes 8 are distributed in a triangular pattern. Two sets of handbrake upper pump fixing holes 20 are provided on the top of the upper pump assembly housing 1, and the two sets of handbrake upper pump fixing holes 20 are symmetrically distributed. A brake sensor mounting hole 18 and a brake sensor mounting hole 29 are provided on the back side of the upper pump assembly housing 1.

[0032] The handbrake pump mounting bracket 7 can fix the assembly to the two-wheeled vehicle. The brake handle connecting bracket 3 and the brake handle are hinged by bolts. The brake sensor is fixed in the brake sensor mounting hole 18 and the brake sensor mounting hole 29. The master cylinder 13 is connected to the piston cylinder 15 through the exhaust port 5 and the oil inlet 6. The piston cylinder 15 is connected to the booster valve mounting hole 17 through the booster valve inlet 16. The booster valve mounting hole 17 is connected to the oil outlet 2 and the pressure reducing valve mounting hole 11. The pressure reducing valve mounting hole 11 is connected to the master cylinder 13 through the pressure reducing valve outlet 12. The oil outlet 2 is connected to the wheel end brake through the connecting pipe. The coil mounting hole 9 and the electronic valve mounting hole are coaxial.

[0033] Working principle: When the brake lever is pressed, it rotates along the hinge end 4, activating the brake sensor. The vehicle system receives the brake signal. Pressing the lever pushes the piston rod to move along the axis of the piston cylinder 15. The Y-shaped piston pressurizes the brake fluid in the cylinder, causing it to flow in through the inlet 16 of the pressure booster valve and through the outlet 2 to the caliper end, thus achieving braking. The pressure reducing valve switches between open and closed states depending on the vehicle status. When open, the brake fluid can flow back to the master cylinder through the outlet 12 of the pressure reducing valve, thus reducing pressure at the wheel end. The coil in the coil mounting hole 9 is powered by an external lead, thereby controlling the opening and closing of the solenoid valve. When braking ends and the lever is released, the return spring pushes the piston rod back to its original position. At this time, a negative pressure is generated in the cylinder, and the brake fluid can be replenished to the piston cylinder 15 through the inlet 6. At the end point, the retaining spring in the retaining spring mounting hole 14 can limit the piston rod.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic brake on pump assembly, characterized by, The system includes an upper pump assembly housing (1), inside which a main cylinder (13) is disposed. A pressure reducing valve outlet (12) is provided on the inner side of the main cylinder (13). Two sets of coil mounting holes (9) are provided on the right side of the upper pump assembly housing (1). Each set of coil mounting holes (9) has a pressure reducing valve mounting hole (11) and a pressure boosting valve mounting hole (17). A pressure reducing valve is installed inside the pressure reducing valve mounting hole (11), and a pressure boosting valve is installed inside the pressure boosting valve mounting hole (17). The right side of the pressure reducing valve is connected to the pressure reducing valve outlet (12). The bottom side of the pressure reducing valve is connected to the pressure reducing valve inlet (10). The other end of the pressure reducing valve inlet (10) is connected to the booster valve. The bottom of the upper pump assembly housing (1) is provided with an oil outlet (2). The oil outlet (2) is connected to the booster valve. The interior of the upper pump assembly housing (1) is provided with a piston cylinder (15). The left side of the piston cylinder (15) is provided with a booster valve inlet (16). The booster valve inlet (16) is connected to the booster valve.

2. An electromagnetic brake on pump assembly according to claim 1, wherein: The front of the upper pump assembly housing (1) is provided with an exhaust port (5) and an oil inlet (6), and the exhaust port (5) is located to the right of the oil inlet (6).

3. An electromagnetic brake on pump assembly as claimed in claim 1, wherein: A brake handle connecting bracket (3) is fixedly installed on the left side of the upper pump assembly housing (1), and the brake handle connecting bracket (3) has a handle hinge end (4).

4. An electromagnetic brake on pump assembly as claimed in claim 1, wherein: The upper pump assembly housing (1) has a retaining ring mounting hole (14) on the left side.

5. An electromagnetic brake on pump assembly as claimed in claim 1, wherein: The top of the upper pump assembly housing (1) is fixedly installed with a handbrake upper pump mounting bracket (7).

6. An electromagnetic brake on pump assembly as claimed in claim 1, wherein: The front of the upper pump assembly housing (1) is provided with three sets of main cylinder upper cover fixing holes (8), and the three sets of main cylinder upper cover fixing holes (8) are distributed in a triangular pattern.

7. An electromagnetic brake on pump assembly as claimed in claim 1 wherein: The top of the upper pump assembly housing (1) is provided with two sets of handbrake upper pump fixing holes (20), and the two sets of handbrake upper pump fixing holes (20) are symmetrically distributed.

8. An electromagnetic brake on pump assembly as claimed in claim 1, wherein: The back of the upper pump assembly housing (1) is provided with a brake sensor mounting hole one (18) and a brake sensor mounting hole two (19).

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