Brake master cylinder convenient to replace

Abstract

The utility model relates to the field of brake master pumps, and discloses a brake master pump convenient to replace, which comprises a pump body shell, an oil delivery pipe is fixedly connected to the top of the pump body shell, an oil storage component is slidably connected in the oil delivery pipe, a sliding round sleeve is slidably connected to the periphery of the oil delivery pipe, and a limiting ring is fixedly connected to the periphery of the sliding round sleeve. A rotating ring is slidably connected to the periphery of the limiting ring, a threaded groove is formed in the bottom end of the interior of the rotating ring, a threaded ring is in threaded connection with the interior of the threaded groove, a slope groove is formed in the sliding round sleeve, and a trapezoidal block is in contact with the inner side of the slope groove. According to the oil tank assembly, the threaded ring, the sliding round sleeve and the rotating ring are arranged, the trapezoidal block moves inwards along the oil conveying pipe, the extrusion rubber strip is extruded, and the extrusion rubber strip is clamped into the inner fixing ring groove, so that the oil tank can be rapidly disassembled without disassembling a bolt, and meanwhile the sealing performance between the oil tank and the pump body is improved.

Description

Technical Field

[0001] The utility model relates to the field of brake master cylinders, in particular to a brake master cylinder which is easy to replace. Background Art

[0002] The master brake cylinder is the core component of the automobile braking system. It is responsible for converting the force of the driver's brake pedal into the pressure of the brake oil (or gas), and transmitting this pressure to the brake cylinders of each wheel, thereby pushing the brake pads to contact the brake disc (or brake drum), generating friction to slow down or stop the vehicle. The performance of the master brake cylinder directly affects the sensitivity and effect of the brakes, and is an important device to ensure driving safety.

[0003] During the long-term use of the current automobile brake master cylinder, oil residue will be generated inside. If the internal oil residue is not handled in time, it may block the oil delivery hole and the compensation hole, and it may also flow back into the oil tank, causing oil residue in the oil tank, resulting in a decrease in the brake oil flow rate. For this reason, the oil tank needs to be disassembled and the connection cleaned. The current oil tank is usually fixed to the pump body with bolts, which is troublesome to disassemble and assemble, affecting the maintenance efficiency. Therefore, a brake master cylinder that is easy to replace is proposed to solve the above problems. Utility Model Content

[0004] In order to remedy the above deficiencies, the utility model provides a brake master cylinder that is easy to replace, aiming to improve the problems in the prior art where the oil tank is usually fixed to the pump body by bolts, which makes disassembly and assembly more troublesome and affects maintenance efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a brake master cylinder that is easy to replace, comprising a pump body shell, an oil pipe is fixedly connected to the top of the pump body shell, an oil storage assembly is slidably connected to the inside of the oil pipe, and the oil storage assembly is used to store brake oil, a sliding sleeve is slidably connected to the outer periphery of the oil pipe, a limiting ring is fixedly connected to the outer periphery of the sliding sleeve, a rotating ring is slidably connected to the outer periphery of the limiting ring, a threaded groove is provided at the bottom end of the rotating ring, a threaded ring is threadedly connected to the inside of the thread groove, an inclined groove is provided inside the sliding sleeve, the inner side of the inclined groove contacts with a trapezoidal block, and the inner side of the trapezoidal block contacts with an extruded rubber strip.

[0006] As a further description of the above technical solution:

[0007] A piston rod is slidably connected to the left side of the pump body shell, and a threaded sleeve is threadedly connected to the outer periphery of the piston rod, a hexagonal block is fixedly connected to the outer periphery of the threaded sleeve, a limiting groove is provided on the outer periphery of the hexagonal block, and a hinge is rotatably connected to the outer periphery of the threaded sleeve, and a limiting seat is fixedly connected to the left side of the hinge, and a sliding rod is elastically connected to the inner wall of the top end of the limiting seat through a limiting spring, and a limiting column is fixedly connected to the bottom of the sliding rod.

[0008] As a further description of the above technical solution:

[0009] The oil storage assembly comprises a connecting pipe, the outer periphery of which is slidably connected to the inside of the oil delivery pipe, a fixed annular groove is provided on the outer periphery of the connecting pipe, and the top of the connecting pipe is fixedly connected to an oil tank.

[0010] As a further description of the above technical solution:

[0011] The inner side of the threaded ring is fixedly connected to the outer periphery of the oil pipeline, and the outer periphery of the trapezoidal block is slidably connected to the inside of the oil pipeline.

[0012] As a further description of the above technical solution:

[0013] The outer periphery of the extruded rubber strip is clamped in the interior of the oil delivery pipe, and the inner side of the extruded rubber strip is clamped in the interior of the fixed ring groove.

[0014] As a further description of the above technical solution:

[0015] One end of the limit spring is fixedly connected to the inner wall of the top end of the limit seat, and the other end of the limit spring is fixedly connected to the top end of the sliding rod. The outer periphery of the sliding rod is slidably connected to the inside of the limit seat.

[0016] As a further description of the above technical solution:

[0017] The bottom of the limiting column is clamped in the limiting groove.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, by setting a threaded ring and a sliding sleeve, the rotating ring is rotated to make the trapezoidal block move inward along the oil pipeline, squeeze the extruded rubber strip, and make the extruded rubber strip engage in the inner fixed ring groove, so that the oil tank can be quickly disassembled without removing the bolts, and the sealing performance between the oil tank and the pump body is improved.

[0020] 2. In the utility model, by setting a hexagonal block and a limit seat and lifting the limit column, the threaded sleeve can be easily rotated, and the limit column is loosened to prevent the threaded sleeve from rotating. As a result, the threaded sleeve is not easily rotated due to vibration during the movement of the car, and the position between the brake connecting rod and the piston rod is fixed, thereby ensuring the braking stroke and braking performance of the master brake cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall front view schematic diagram of a brake master cylinder that is easy to replace proposed by the utility model;

[0022] Figure 2This is a schematic diagram of the front separation of the oil delivery pipe of a brake master cylinder that is easy to replace proposed by the utility model;

[0023] Figure 3 This is a front cross-sectional schematic diagram of an oil delivery pipe of a brake master cylinder that is easy to replace proposed by the utility model;

[0024] Figure 4 The right side schematic diagram of the cross section of an articulated part of a brake master cylinder that is easy to replace proposed by the utility model;

[0025] Figure 5 The utility model provides a right side cross-sectional schematic diagram of a limit seat of a brake master cylinder which is easy to replace.

[0026] Legend:

[0027] 1. Pump body shell; 2. Oil delivery pipe; 3. Connecting pipe; 4. Fixed ring groove; 5. Oil tank; 6. Sliding sleeve; 7. Limiting ring; 8. Rotating ring; 9. Threaded groove; 10. Threaded ring; 11. Inclined groove; 12. Trapezoidal block; 13. Extruded rubber strip; 14. Piston rod; 15. Threaded sleeve; 16. Hexagonal block; 17. Limiting groove; 18. Hinge; 19. Limiting seat; 20. Limiting spring; 21. Sliding rod; 22. Limiting column. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 3, the utility model provides an embodiment: a brake master cylinder that is easy to replace, including a pump body shell 1 that fixes and supports the brake master cylinder and protects internal components, an oil delivery pipe 2 is fixedly connected to the top of the pump body shell 1, the oil delivery pipe 2 is provided with two groups of oil, the two groups of oil delivery pipes 2 are symmetrically arranged, the oil delivery holes and compensation holes are arranged inside the oil delivery pipe 2, so that the brake oil can be connected to the inside of the pump body, an oil storage component is slidably connected inside the oil delivery pipe 2, and the oil storage component is used to store brake oil. The oil storage component includes a connecting pipe 3, the connecting pipe 3 is provided with two groups, which are symmetrically arranged and opposite to the positions of the two groups of oil delivery pipes 2, the outer periphery of the connecting pipe 3 is slidably connected to the inside of the oil delivery pipe 2, and a fixed annular groove 4 for improving the connection stability is opened on the outer periphery of the connecting pipe 3, and an oil tank 5 for storing brake oil is fixedly connected to the top of the connecting pipe 3, a sliding circular sleeve 6 is slidably connected to the outer periphery of the oil delivery pipe 2, and the oil delivery pipe 2 limits the sliding circular sleeve 6 to only slide up and down along the outer wall of the oil delivery pipe 2, and a limiting ring 7 is fixedly connected to the outer periphery of the sliding circular sleeve 6, and the limiting ring 7 slides on the outer periphery The rotating ring 8 is dynamically connected, and the limit ring 7 enables the sliding sleeve 6 to move up and down with the rotating ring 8. A thread groove 9 is provided at the bottom end of the rotating ring 8. A thread ring 10 is threadedly connected inside the thread groove 9. The rotating ring 8 is rotated, and the rotating ring 8 can move up and down along the outer wall of the thread ring 10. The inner side of the thread ring 10 is fixedly connected to the outer periphery of the oil pipeline 2. An inclined groove 11 is provided inside the sliding sleeve 6. The inner side of the inclined groove 11 contacts a trapezoidal block 12. When the sliding sleeve 6 moves downward, the sliding sleeve 6 The inner inclined groove 11 will squeeze the trapezoidal block 12 along the inclined surface, causing the trapezoidal block 12 to move inward. The outer periphery of the trapezoidal block 12 is slidably connected to the inside of the oil pipeline 2. The inner side of the trapezoidal block 12 is in contact with an extruded rubber strip 13. The extruded rubber strip 13 has a certain elasticity. When squeezed, it will deform and generate elastic force, and improve the sealing performance. The outer periphery of the extruded rubber strip 13 is clamped into the inside of the oil pipeline 2, and the inner side of the extruded rubber strip 13 is clamped into the inside of the fixed ring groove 4, fixing the connecting pipe 3 and the oil pipeline 2 together.

[0030] Reference Figure 1 , Figure 4 and Figure 5The left side of the pump housing 1 is slidably connected with a piston rod 14, and the outer periphery of the piston rod 14 is threadedly connected with a threaded sleeve 15. The threaded sleeve 15 rotates and can slide left and right along the outer periphery of the piston rod 14. The outer periphery of the threaded sleeve 15 is fixedly connected with a hexagonal block 16 for easy rotation. The outer periphery of the hexagonal block 16 is provided with a limiting groove 17. The limiting groove 17 is provided with six groups, which are evenly distributed in an annular shape on the outer periphery of the hexagonal block 16. The outer periphery of the threaded sleeve 15 is rotatably connected with a hinge 18 hinged to the brake connecting rod. The left side of the hinge 18 is fixedly connected to a limiting seat 19, and the inner wall of the top of the limiting seat 19 is limited by a limiting spring The spring 20 is elastically connected to the sliding rod 21. When the sliding rod 21 is not subjected to force, the limit spring 20 will push the sliding rod 21 downward. One end of the limit spring 20 is fixedly connected to the inner wall of the top of the limit seat 19, and the other end of the limit spring 20 is fixedly connected to the top of the sliding rod 21. The outer periphery of the sliding rod 21 is slidably connected to the inside of the limit seat 19. The limit seat 19 limits the sliding rod 21 to only slide up and down along the inside of the limit seat 19. The bottom of the sliding rod 21 is fixedly connected to the limit column 22, and the bottom of the limit column 22 is clamped in the inside of the limit groove 17, so that the hexagonal block 16 is not easy to rotate.

[0031] Working principle: When you want to disassemble the oil tank 5 conveniently, rotate the rotating ring 8, and the rotating ring 8 moves upward along the threaded ring 10, while driving the sliding sleeve 6 to move upward, and the sliding sleeve 6 drives the inclined groove 11 to move upward. At this time, the elastic force of the extruded rubber strip 13 pushes the trapezoidal block 12 to move outward, and the extruded rubber strip 13 also breaks away from the fixed ring groove 4, so that the oil tank 5 can be easily removed from the pump body shell 1, so that the oil tank 5 can be easily replaced and the oil residue at the connection can be cleaned. When you want to prevent the threaded sleeve 15 from rotating, first lift the limit column 22 upwards. The limit column 22 moves upward, driving the sliding rod 21 to move upward and squeezing the limit spring 20. Then, screw the threaded sleeve 15 to the specified position, loosen the limit column 22, and the limit spring 20 releases the compression and pushes the limit column 22 downward. The limit column 22 is clamped into the inside of the limit groove 17, so that the threaded sleeve 15 is not easy to rotate, and the position between the brake connecting rod and the piston rod 14 is not easy to change, which will not affect the braking stroke and braking performance of the master brake cylinder.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A brake master cylinder that is easy to replace, comprising a pump housing (1), characterized in that: The top of the pump body shell (1) is fixedly connected to an oil delivery pipe (2), and an oil storage component is slidably connected inside the oil delivery pipe (2). The oil storage component is used to store brake oil. The outer periphery of the oil delivery pipe (2) is slidably connected to a sliding sleeve (6), and the outer periphery of the sliding sleeve (6) is fixedly connected to a limit ring (7), and the outer periphery of the limit ring (7) is slidably connected to a rotating ring (8). The bottom end of the rotating ring (8) is provided with a threaded groove (9), and the threaded groove (9) is threadedly connected to a threaded ring (10). The sliding sleeve (6) is provided with an inclined groove (11), and the inner side of the inclined groove (11) contacts a trapezoidal block (12), and the inner side of the trapezoidal block (12) contacts an extruded rubber strip (13).

2. The easily replaceable brake master cylinder according to claim 1, characterized in that: The left side of the pump body shell (1) is slidably connected to a piston rod (14); the outer periphery of the piston rod (14) is threadedly connected to a threaded sleeve (15); the outer periphery of the threaded sleeve (15) is fixedly connected to a hexagonal block (16); a limiting groove (17) is provided on the outer periphery of the hexagonal block (16); the outer periphery of the threaded sleeve (15) is rotatably connected to a hinge (18); the left side of the hinge (18) is fixedly connected to a limiting seat (19); the inner wall of the top end of the limiting seat (19) is elastically connected to a sliding rod (21) via a limiting spring (20); the bottom of the sliding rod (21) is fixedly connected to a limiting column (22).

3. The easily replaceable brake master cylinder according to claim 1, characterized in that: The oil storage assembly comprises a connecting pipe (3), the outer periphery of which is slidably connected to the inside of the oil delivery pipe (2), a fixed annular groove (4) is provided on the outer periphery of the connecting pipe (3), and the top of the connecting pipe (3) is fixedly connected to an oil tank (5).

4. The easily replaceable brake master cylinder according to claim 1, characterized in that: The inner side of the threaded ring (10) is fixedly connected to the outer periphery of the oil delivery pipe (2), and the outer periphery of the trapezoidal block (12) is slidably connected to the inside of the oil delivery pipe (2).

5. The easily replaceable brake master cylinder according to claim 1, characterized in that: The outer periphery of the extruded rubber strip (13) is clamped into the interior of the oil delivery pipe (2), and the inner side of the extruded rubber strip (13) is clamped into the interior of the fixed ring groove (4).

6. The easily replaceable brake master cylinder according to claim 2, characterized in that: One end of the limit spring (20) is fixedly connected to the inner wall of the top end of the limit seat (19), and the other end of the limit spring (20) is fixedly connected to the top end of the sliding rod (21), and the outer periphery of the sliding rod (21) is slidably connected to the inside of the limit seat (19).

7. The easily replaceable brake master cylinder according to claim 2, characterized in that: The bottom of the limiting column (22) is clamped inside the limiting groove (17).

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