Brake master cylinder with brake fault prompting function

Abstract

The utility model relates to the technical field of automobile brake devices, and particularly discloses a brake master cylinder with a brake fault prompt function. A first Hall sensor and a first push rod are fixedly installed, and a connecting rod is fixedly installed at the end, away from the first push rod, of the first Hall sensor; the end, away from the first Hall sensor, of the connecting rod is fixedly installed with the second Hall sensor, the magnet is arranged in the brake master cylinder body, when oil leakage occurs, the pressure in the brake master cylinder body will be reduced, the second spring and the third spring will stretch, the magnet will pass through the first Hall sensor, and the first Hall sensor is connected with the second Hall sensor. The first Hall sensor prompts a driver that the internal oil quantity of the brake master pump body is insufficient, the brake oil cannot be transmitted into the transmission pipe during braking, the magnet passes through the second Hall sensor, and the second Hall sensor prompts the driver that the internal part of the brake master pump body breaks down; therefore, the function of reminding a driver of internal abnormity of the brake master cylinder body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile brake devices, in particular to a brake master cylinder with a self-contained brake fault prompt. Background Art

[0002] The master brake cylinder is a key component in the automobile braking system. Its main function is to push the piston in the master cylinder forward through the action of the pedal force, so that the pressure chamber of the master brake cylinder generates hydraulic pressure, and then transmits hydraulic pressure to the braking system of the entire vehicle through the oil outlet of the master brake cylinder, thereby realizing the braking function of the vehicle.

[0003] As disclosed in a Chinese patent: brake master cylinder, patent number: CN217892804U, after braking, the pressure on the push rod disappears, the fifth spring and the fourth spring push the front cylinder piston to reset, the front cylinder piston and the third spring push the middle cylinder piston to reset, the oil inlet valve seat connection port and the oil outlet connection hole are closed, the middle cylinder piston and the second spring drive the rear cylinder piston to reset, the rear cylinder piston and the first spring simultaneously drive the push rod to reset, the multiple springs between the pistons drive the movement and reset of the piston and the push rod, and prevent the problem of spring elastic force reduction caused by long-term use of a single spring, thereby ensuring normal braking of the brake master cylinder.

[0004] However, during the implementation of the above technical solution, it was found that there are at least the following technical problems: as mentioned above, when the master brake cylinder leaks oil or the sealing ring ruptures, and the driver is not prompted, the master brake cylinder will not be able to be used normally during emergency braking, making it difficult to ensure the driver's life safety. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the deficiencies in the existing technology, the utility model provides a brake master cylinder with built-in brake fault prompt, which solves the technical problem that when the brake master cylinder leaks oil or the sealing ring ruptures, no prompt is given to the driver, and the brake master cylinder will not be able to be used normally during emergency braking, making it difficult to ensure the driver's life safety.

[0007] (2) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A brake master cylinder with built-in brake fault prompt includes a brake master cylinder body, a detection mechanism is provided on the side wall of the brake master cylinder body, the detection mechanism includes a transmission pipe, a first push rod, a first Hall sensor, a connecting rod, a second Hall sensor and a magnet, the transmission pipe is fixedly installed on the side wall of the brake master cylinder body, the first push rod is slidably installed inside the transmission pipe, the first Hall sensor is slidably installed on the side wall of the brake master cylinder body, the first Hall sensor is fixedly installed on the first push rod, the connecting rod is fixedly installed on the end of the first Hall sensor away from the first push rod, the end of the connecting rod away from the first Hall sensor is fixedly installed on the second Hall sensor, and the magnet is provided inside the brake master cylinder body.

[0010] Preferably, a first sealing ring is fixedly mounted on one end of the first push rod away from the first Hall sensor, and an oil reservoir is fixedly mounted on the top of the master brake cylinder body.

[0011] Preferably, an oil outlet pipe is fixedly mounted on the side wall of the master brake cylinder body, and a mounting block is fixedly mounted on the side wall of the master brake cylinder body.

[0012] Preferably: a support ring is fixedly mounted on one end of the mounting block away from the brake master cylinder body, a first spring is fixedly mounted on one end of the support ring away from the mounting block, and a mounting ring is fixedly mounted on one end of the first spring away from the support ring.

[0013] Preferably, a second push rod is fixedly mounted inside the mounting ring, a first piston rod is fixedly mounted on a side wall of the second push rod, a second sealing ring is fixedly mounted on a side wall of the first piston rod, and a second spring is sleeved on the side wall of the first piston rod.

[0014] Preferably: a third sealing ring is fixedly installed on the end of the first piston rod away from the second push rod, the second piston rod is fixedly installed on the end of the third sealing ring away from the first piston rod, a fourth sealing ring is fixedly installed on the side wall of the second piston rod, and a third spring is sleeved on the side wall of the second piston rod.

[0015] (3) Beneficial effects

[0016] 1. When oil leakage occurs, the pressure inside the master cylinder body will decrease, the second spring and the third spring will stretch, the brake oil will push the second sealing ring and the third sealing ring to move from right to left, and the magnet will pass through the first Hall sensor. The first Hall sensor will prompt the driver that there is insufficient oil inside the master cylinder body. When the second sealing ring, the third sealing ring and the second piston rod are damaged and cannot be used normally, the brake oil will not be able to be transmitted to the inside of the transmission pipe during braking. At this time, the magnet will pass through the second Hall sensor, and the second Hall sensor will prompt the driver that there is a fault inside the master cylinder body, and the master cylinder body will not be able to be used normally, thereby achieving the function of prompting the driver that there is an abnormality inside the master cylinder body.

[0017] 2. When the brake is completed and the pedal is released, the first spring will rebound under force, accelerating the braking device to end braking and speed up the response of the device. The support ring will provide support for the second push rod to prevent the second push rod from deflecting during operation, causing damage to the device and making it unusable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0020] Figure 2 This is a structural diagram of the support ring of the utility model;

[0021] Figure 3 This is a structural diagram of the first piston rod of the present utility model;

[0022] Figure 4 This is a structural diagram of the first push rod of the present utility model.

[0023] Legend: 11. Master brake cylinder body; 12. Transmission pipe; 13. First push rod; 14. First Hall sensor; 15. Connecting rod; 16. Second Hall sensor; 17. Magnet; 18. Oil reservoir; 19. Oil outlet pipe; 21. Mounting block; 22. Support ring; 23. First spring; 24. Mounting ring; 25. Second push rod; 26. First piston rod; 27. Second sealing ring; 29. ​​Second spring; 31. Third sealing ring; 32. Second piston rod; 33. Fourth sealing ring; 35. Third spring. DETAILED DESCRIPTION

[0024] The embodiment of the present application provides a brake master cylinder with a built-in brake fault prompt, which effectively solves the problem that when the brake master cylinder leaks oil or the sealing ring is broken, but the driver is not prompted, the brake master cylinder will not be able to be used normally during emergency braking, making it difficult to ensure the driver's life safety. When there is an oil leak, the pressure inside the brake master cylinder body will decrease, the second spring and the third spring will stretch, the brake oil will push the second sealing ring and the third sealing ring to move from right to left, the magnet will pass through the first Hall sensor, and the first Hall sensor will prompt the driver that the oil level inside the brake master cylinder body is insufficient. When the second Hall sensor When the second sealing ring, the third sealing ring and the second piston rod are damaged and cannot be used normally, the brake oil will not be able to be transmitted to the inside of the transmission pipe during braking. At this time, the magnet will pass through the second Hall sensor, and the second Hall sensor will prompt the driver that there is a fault inside the master brake cylinder body, and the master brake cylinder body will not be able to be used normally, thereby achieving the function of prompting the driver that there is an abnormality inside the master brake cylinder body. When the braking is completed and the pedal is released, the first spring will be forced to rebound, accelerating the braking device to end braking and speeding up the response of the device. The support ring will provide support for the second push rod to prevent the second push rod from offsetting during operation, causing damage to the device and unusable.

[0025] Example

[0026] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the technical solution in the embodiment of the present application is to effectively solve the problem that when the brake master cylinder leaks oil or the sealing ring is broken, the driver is not prompted. During emergency braking, the brake master cylinder will not be able to be used normally, making it difficult to ensure the driver's life safety. The overall idea is as follows: A brake master cylinder with built-in brake fault prompt includes a brake master cylinder body 11, and a detection mechanism is provided on the side wall of the brake master cylinder body 11. The detection mechanism includes a transmission pipe 12, a first push rod 13, a first Hall sensor 14, a connecting rod 15, a second Hall sensor 16 and a magnet 17. The transmission pipe 12 is fixedly installed on the side wall of the brake master cylinder body 11, the first push rod 13 is slidably installed in the transmission pipe 12, the first Hall sensor 14 is slidably installed on the side wall of the brake master cylinder body 11, the first Hall sensor 14 is fixedly installed with the first push rod 13, the connecting rod 15 is fixedly installed on the end of the first Hall sensor 14 away from the first push rod 13, and the end of the connecting rod 15 away from the first Hall sensor 14 is connected to the second Hall sensor 16 6 is fixedly installed. The magnet 17 is disposed inside the brake master cylinder body 11. A first sealing ring is fixedly mounted on the end of the first push rod 13 away from the first Hall sensor 14. The first sealing ring is slidably mounted inside the transmission pipe 12. When oil leakage occurs, the pressure inside the brake master cylinder body 11 will decrease, the second spring 29 and the third spring 35 will expand, and the brake oil will push the second sealing ring 27 and the third sealing ring 31 from right to left. The magnet 17 will pass the first Hall sensor 14, which will inform the driver that the oil level inside the brake master cylinder body 11 is insufficient. When the second sealing ring 27, the third sealing ring 31, and the second piston rod 32 are damaged and cannot be used normally, the brake oil will not be able to be transmitted to the transmission pipe 12 during braking. At this time, the magnet 17 will pass the second Hall sensor 16, which will inform the driver that a fault has occurred inside the brake master cylinder body 11 and that the brake master cylinder body 11 will not be able to be used normally, thereby achieving the function of notifying the driver of abnormalities inside the brake master cylinder body 11.

[0027] An oil reservoir 18 is fixedly mounted on the top of the master cylinder body 11 , and an oil outlet pipe 19 is fixedly mounted on the side wall of the master cylinder body 11 to facilitate the transmission of brake oil inside the master cylinder body 11 .

[0028] A mounting block 21 is fixedly mounted on the side wall of the brake master cylinder body 11, a support ring 22 is fixedly mounted on the end of the mounting block 21 away from the brake master cylinder body 11, a first spring 23 is fixedly mounted on the end of the support ring 22 away from the mounting block 21, a mounting ring 24 is fixedly mounted on the end of the first spring 23 away from the support ring 22, a second push rod 25 is fixedly mounted inside the mounting ring 24, a first piston rod 26 is fixedly mounted on the side wall of the second push rod 25, a second sealing ring 27 is fixedly mounted on the side wall of the first piston rod 26, a second spring 29 is sleeved on the side wall of the first piston rod 26, and the first piston rod 26 is fixedly mounted on the side wall. A third sealing ring 31 is fixedly installed on the end of the plug rod 26 away from the second push rod 25, and a second piston rod 32 is fixedly installed on the end of the third sealing ring 31 away from the first piston rod 26. A fourth sealing ring 33 is fixedly installed on the side wall of the second piston rod 32, and a third spring 35 is sleeved on the side wall of the second piston rod 32. When the braking is completed and the pedal is released, the first spring 23 will rebound under the force, accelerating the braking device to end braking and speeding up the response speed of the device. The support ring 22 will provide support for the second push rod 25 to prevent the second push rod 25 from deviating during operation, causing damage to the device and making it unusable.

[0029] In view of the problems existing in the prior art, the utility model provides a brake master cylinder with a brake fault prompt. When oil leakage occurs, the pressure inside the brake master cylinder body 11 will become smaller, the second spring 29 and the third spring 35 will stretch, and the brake oil will push the second sealing ring 27 and the third sealing ring 31 to move from right to left. The magnet 17 will pass through the first Hall sensor 14, and the first Hall sensor 14 will prompt the driver that the oil level inside the brake master cylinder body 11 is insufficient. When the second sealing ring 27, the third sealing ring 31 and the second piston rod 32 are damaged and cannot be used normally, the brake will be turned off. The brake oil will not be able to be transmitted to the inside of the transmission pipe 12. At this time, the magnet 17 will pass through the second Hall sensor 16. The second Hall sensor 16 will prompt the driver that there is a fault inside the master brake cylinder body 11. The master brake cylinder body 11 will not be able to be used normally, thereby achieving the function of prompting the driver that there is something wrong inside the master brake cylinder body 11. When the braking is completed and the pedal is released, the first spring 23 will be forced to rebound, accelerating the braking device to end braking and speeding up the response of the device. The support ring 22 will provide support for the second push rod 25 to prevent the second push rod 25 from offsetting during operation, causing damage to the device and making it unusable.

[0030] Working principle:

[0031] In the first step, when the driver starts to brake, the second push rod 25 moves from right to left, and the second push rod 25 drives the first piston rod 26 to move from right to left. The first piston rod 26 drives the third sealing ring 31, the second piston rod 32 and the fourth sealing ring 33 to move from right to left. The second piston rod 32 drives the magnet 17 to move from right to left. When the magnet 17 contacts the inner wall of the master cylinder body 11, the second piston rod 32 and the first piston rod 26 begin to compress, and the second spring 29 and the third spring 35 also begin to be compressed. When the second sealing ring 27 and the third sealing ring 31 pass through the oil outlet pipe 19, the brake oil pressure inside the master cylinder body 11 becomes large, and the brake oil is transmitted from the oil outlet pipe 19. Part of the brake oil will enter the transmission pipe 12, and the brake oil will push the first sealing ring to move from right to left. The first sealing ring drives the first push rod 13 to move from right to left, pushing the first Hall sensor 14, the connecting rod 15 and the second Hall sensor 1 6 movement, the connecting rod 15 and the second Hall sensor 16 move synchronously with the magnet 17. When not in use, the brake master cylinder body 11 will leak oil, the pressure inside the brake master cylinder body 11 will decrease, the second spring 29 and the third spring 35 will stretch, the brake oil will push the second sealing ring 27 and the third sealing ring 31 to move from right to left, the magnet 17 will pass through the first Hall sensor 14, and the first Hall sensor 14 will prompt the driver that the oil level inside the brake master cylinder body 11 is insufficient. When the second sealing ring 27, the third sealing ring 31 and the second piston rod 32 are damaged and cannot be used normally, the brake oil will not be able to be transmitted to the inside of the transmission pipe 12 during braking. At this time, the magnet 17 will pass through the second Hall sensor 16, and the second Hall sensor 16 will prompt the driver that there is a fault inside the brake master cylinder body 11, and the brake master cylinder body 11 will not be able to be used normally, thereby achieving the function of prompting the driver that there is something wrong with the brake master cylinder body 11.

[0032] In the second step, when the braking is completed and the pedal is released, the first spring 23 will be forced to rebound, accelerating the braking device to end braking and speeding up the device response. The support ring 22 will provide support for the second push rod 25 to prevent the second push rod 25 from deflecting during operation, causing damage to the device and making it unusable.

[0033] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A brake master cylinder with a built-in brake fault prompt, comprising a brake master cylinder body (11), characterized in that: The side wall of the master brake cylinder body (11) is provided with a detection mechanism, and the detection mechanism includes a transmission tube (12), a first push rod (13), a first Hall sensor (14), a connecting rod (15), a second Hall sensor (16) and a magnet (17); the transmission tube (12) is fixedly mounted on the side wall of the master brake cylinder body (11); the first push rod (13) is slidably mounted inside the transmission tube (12); the first Hall sensor (14) is slidably mounted on the side wall of the master brake cylinder body (11); the first Hall sensor (14) and the first push rod (13) are fixedly mounted; and the connecting rod (15) is fixedly mounted on an end of the first Hall sensor (14) away from the first push rod (13); The end of the connecting rod (15) away from the first Hall sensor (14) is fixedly mounted to the second Hall sensor (16), and the magnet (17) is arranged inside the master brake cylinder body (11).

2. A master brake cylinder with built-in brake fault warning according to claim 1, characterized in that: A first sealing ring is fixedly mounted on one end of the first push rod (13) away from the first Hall sensor (14), and the first sealing ring is slidably mounted inside the transmission tube (12); Wherein, an oil storage cylinder (18) is fixedly installed on the top of the master brake cylinder body (11).

3. A master brake cylinder with built-in brake fault warning as claimed in claim 2, characterized in that: An oil outlet pipe (19) is fixedly mounted on the side wall of the master brake cylinder body (11); Wherein, a mounting block (21) is fixedly mounted on the side wall of the brake master cylinder body (11).

4. A master brake cylinder with built-in brake fault warning as claimed in claim 3, characterized in that: A support ring (22) is fixedly mounted on one end of the mounting block (21) away from the brake master cylinder body (11); A first spring (23) is fixedly mounted on one end of the support ring (22) away from the mounting block (21), and a mounting ring (24) is fixedly mounted on one end of the first spring (23) away from the support ring (22).

5. A master brake cylinder with built-in brake fault warning as claimed in claim 4, characterized in that: A second push rod (25) is fixedly mounted inside the mounting ring (24), and a first piston rod (26) is fixedly mounted on the side wall of the second push rod (25); Wherein, a second sealing ring (27) is fixedly mounted on the side wall of the first piston rod (26), and a second spring (29) is sleeved on the side wall of the first piston rod (26).

6. A master brake cylinder with built-in brake fault warning according to claim 5, characterized in that: A third sealing ring (31) is fixedly mounted on one end of the first piston rod (26) away from the second push rod (25), and a second piston rod (32) is fixedly mounted on one end of the third sealing ring (31) away from the first piston rod (26); A fourth sealing ring (33) is fixedly mounted on the side wall of the second piston rod (32), and a third spring (35) is sleeved on the side wall of the second piston rod (32).

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