Brake return piston device with automatic compensation function

Abstract

The present invention discloses a brake return piston device with an automatic compensation function, which includes a piston body, an inlet, a guide rod and a brake caliper; the piston body is slidably engaged inside the brake caliper, and an inlet for brake fluid to enter is provided inside the brake caliper; the guide rod is slidably engaged inside the left side of the brake caliper; it further includes: a disc spring member, which is arranged inside the brake caliper, and the disc spring member is located between the disc spring adjusting nut and the piston body, and the disc spring adjusting nut is slidably engaged inside the brake caliper. This brake return piston device with an automatic compensation function avoids the aging phenomenon of internal rubber parts, realizes the effects of automatic gap compensation and braking through the settings of the disc spring adjusting nut and the disc spring member, realizes adaptation to different specifications of brakes through the setting of the rubber cone sleeve, and monitors the internal leakage situation through a sound.

Description

Technical Field

[0001] The present invention relates to the technical field of brakes, and specifically to a brake return piston device with an automatic compensation function. Background Art

[0002] For the hydraulic control of brakes, the main components include a brake disc, a brake caliper, a hydraulic pipe and a piston. The piston inside is pushed by brake fluid to brake the brake disc in the middle position, achieving the function of deceleration. For example, a hydraulic disc brake easy to disassemble and assemble with the publication number CN216279096U includes a brake disc, a hydraulic cylinder and a brake fixed seat. The brake disc is fixedly installed on the wheel hub, and both the wheel hub and the brake disc are movably connected to the vehicle axle through the axle. Brake calipers are provided on both sides of the brake disc; the interior of the brake fixed seat is hollow and it is installed on the vehicle axle. An installation hole communicating with its inner cavity is provided at the top of the brake fixed seat, and a hinge seat is installed at the bottom side of the brake fixed seat. A sliding frame is provided inside the brake fixed seat, and the end of the sliding frame is connected to the hinge seat; the two brake calipers are connected to the hinge seat through a pivot. A friction plate is fixed on the side of the brake caliper close to the brake disc, and the friction plate can be in close contact with the brake disc when the brake caliper rotates. The disc brake of the present utility model can conveniently and quickly achieve the purpose of vehicle braking, ensuring the effect of frictional braking, with high braking efficiency. However, there are still problems in the process of using this brake:

[0003] 1. Existing engineering machinery caliper disc brakes have braking backpressure, and the piston does not return after braking, causing the brake pads and the brake disc to be unable to disengage, continuously generating a large amount of frictional heat. The brake pads wear quickly, are severely burned, and the service life is reduced. The rubber sealing ring is severely heated and cannot be cooled, exacerbating the aging of the rubber parts, easily causing hydraulic oil leakage, resulting in brake failure, accidents, increasing the failure rate of the caliper disc brake, and reducing the safety factor of wheeled engineering machinery;

[0004] 2. The brake realizes the sealing function through the sealing ring. After long-term use and being kept in a high-temperature environment, the sealing ring is prone to aging and oil leakage, resulting in poor braking effect and inability to monitor internal leakage;

[0005] 3. Although the dust-proof rubber can isolate dust, it is easy to fall on the surface of the brake disc after long-term accumulation, and it is easy to have an incomplete contact phenomenon during braking, resulting in a poor braking effect.

[0006] Therefore, we propose a brake return piston device with an automatic compensation function to solve the problems mentioned above. Summary of the Invention

[0007] The object of the present invention is to provide a brake return piston device with an automatic compensation function to solve the problems of easy leakage in the current market, inability to monitor the internal situation, and easy accumulation of dust on the surface of the dust-proof rubber as proposed in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A brake return piston device with an automatic compensation function, including a piston body, an inlet, a guide rod, and a brake caliper;

[0009] The piston body is slidably engaged inside the brake caliper, and an inlet for allowing brake fluid to enter is provided inside the brake caliper;

[0010] The guide rod is slidably engaged on the left side inside the brake caliper;

[0011] It further includes:

[0012] A disc spring member is provided inside the brake caliper, and the disc spring member is located between the disc spring adjusting nut and the piston body, and the disc spring adjusting nut is slidably engaged inside the brake caliper;

[0013] A rectangular sealing ring is provided on the inner side inside the brake caliper, and there are two rectangular sealing rings, and the rectangular sealing rings are in mutual fit with the outer side of the piston body;

[0014] A rubber cone sleeve is provided on the left side inside the brake caliper, and a cone sleeve pressing nut for pressing the rubber cone sleeve is provided on the outer side of the rubber cone sleeve;

[0015] A radiator is provided on the outer side of the brake caliper, and a dust-proof ring for blocking dust is provided on the right side inside the brake caliper, and an upper scraper and a lower scraper for pushing dust are slidably engaged on the outer side of the dust-proof ring.

[0016] Preferably, an O-ring for sealing is provided on the left side inside the brake caliper, and a winding column for winding the brake caliper is rotatably connected by a bearing above the inside of the brake caliper, and a connecting rope for rotating the winding column is provided between the winding column and the piston body. By pulling the winding column 12 through the connecting rope, the winding column is made to wind the fixing rope.

[0017] Preferably, fixing ropes for pulling the upper scraper are provided on both the left and right sides of the outer side of the winding column, and the fixing ropes on both the left and right sides are wound around the outer side of the winding column, and the winding directions of the fixing ropes on both the left and right sides are opposite. By pulling the upper scraper with the fixing ropes, the dust on the surface of the dust-proof ring is processed.

[0018] Preferably, the other end of the fixing rope is fixed to the upper scraper for dust treatment, and the upper scraper and the lower scraper are connected by a transmission rope, and the sliding distances of the upper scraper and the lower scraper are the same. The upper scraper and the lower scraper move to scrape the dust, preventing the dust from falling onto the surface of the brake disc.

[0019] Preferably, the outer side of the rubber cone sleeve fits with the inner side of the cone sleeve compression nut, and the periphery of the rubber cone sleeve is of an inclined structure. Inside the brake caliper body, there is a water-absorbing sponge for adsorbing brake fluid, and there are 2 groups of water-absorbing sponges. Inside the brake caliper body, there is a card slot for placing a button and a speaker. The state of the speaker is used to monitor the internal leakage situation to prevent the brake fluid from leaking without being discovered in time.

[0020] Preferably, the inner periphery of the card slot is of an inclined structure. The inner periphery of the card slot is of an inclined structure, and inside the card slot, there is a button and a speaker. The button is located above the speaker, and the button and the speaker are on the same circuit. The button pushes the speaker to make the speaker work.

[0021] Preferably, inside the brake caliper body, there is a rotating rod for pulling the water-absorbing sponge. At the rear side of the rotating rod, there is a motor for enabling the rotating rod to rotate with a gap. The output end of the motor is connected to the rotating rod. The motor rotates the rotating rod to squeeze the water in the water-absorbing sponge.

[0022] Preferably, on the upper sides of the left and right sides of the rotating rod and the water-absorbing sponge, there is a pulling rope for moving the water-absorbing sponge downward, and between the water-absorbing sponge and the brake caliper body, there is a return spring for moving the water-absorbing sponge upward. The return spring moves the water-absorbing sponge upward, and the water-absorbing sponge adsorbs the brake fluid.

[0023] Preferably, the water-absorbing sponge is located at the gap between the piston body and the brake caliper body. The moving directions of the water-absorbing sponges on the left and right sides are opposite, and the diameter of the water-absorbing sponge is larger than the diameter of the card slot. The card slot is used to squeeze the water-absorbing sponge, so that the brake fluid adsorbed by the water-absorbing sponge directly acts on the button.

[0024] Preferably, on the outer side of the brake caliper body, there are bolts for fixing the brake caliper body. At the upper left corner of the brake caliper body, there is an inlet for the brake fluid to enter the inside of the brake caliper body. Around the winding column, there is a torsion spring for making the winding column rotate in the reverse direction. The torsion spring rotates the winding column, and the brake fluid enters the inside of the brake caliper body to push the piston body.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the brake ball is cooled by a radiator to prevent the parts made of rubber inside from aging. The automatic clearance compensation and braking effects are achieved through the settings of the disc spring adjusting nut and the disc spring part. The rubber cone sleeve is provided to achieve energy conservation and emission reduction on brakes of different specifications. The upper scraper and the lower scraper slide on the surface of the dust-proof ring to clean the dust on the surface of the dust-proof ring. The internal leakage condition is monitored by a sounder. The specific contents are as follows:

[0026] (1) The piston has an automatic compensation function. The connection between the guide rod and the piston is ensured by the pre-tightening force of the quasi-sleeve clamping mechanism, which guarantees that the piston can automatically compensate for the clearance between the brake pads and the brake disc after wear. The piston has an automatic return function. After the piston is pre-tightened by the disc spring, a certain remaining compression amount is left. After braking, it automatically rebounds to the reserved compression amount (0.6 - 1 mm rebound amount), so that the brake pads automatically disengage from the friction with the brake disc, eliminating the frictional heat generated by the braking back pressure. The rubber cone sleeve is adopted, so that the piston guide rod plays a sealing role while being pre-tightened, making the sealing effect better, further reducing the oil leakage rate, and improving the safety factor of the caliper disc brake. The cone nut is used for pressing, so that the pre-tightening force of the guide rod is adjustable, and the pre-tightening force can be adjusted according to the actual needs of the product, improving the versatility of the brake piston return device with automatic compensation function, and it can be installed on different models of caliper disc brakes, fully playing the role of energy conservation and emission reduction;

[0027] (2) The upper scraper and the lower scraper are pulled by a fixed rope, and the dust on the surface of the dust-proof ring is cleaned by the sliding of the upper scraper and the lower scraper, preventing dust accumulation and avoiding the phenomenon of incomplete braking caused by dust falling on the surface of the brake disc;

[0028] (3) The brake fluid leaked is adsorbed by the water-absorbing sponge to prevent the brake fluid from flowing. The brake fluid inside the water-absorbing cotton is extruded through the card slot, and then the weight of the brake fluid acts on the upper part of the button. The internal leakage condition is monitored by the state of the sounder to avoid the deterioration of the braking effect of the brake;

[0029] (4) The heat inside the brake is dissipated by the radiator to prevent the rubber parts from aging due to excessive heat inside the brake and increase the service life of the rubber parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the front view structural schematic diagram of the present invention;

[0031] Figure 2 is the main sectional structural schematic diagram of the present invention;

[0032] Figure 3 of the present inventionFigure 2 Schematic enlarged view at position a;

[0033] Figure 4 Schematic side-sectional view of the dust-proof ring of the present invention;

[0034] Figure 5 Schematic connection structure view of the rubber cone sleeve and the cone sleeve compression nut of the present invention;

[0035] Figure 6 Schematic structure view of the dust-proof ring of the present invention;

[0036] Figure 7 Of the present invention Figure 2 Schematic enlarged view at position b;

[0037] Figure 8 Of the present invention Figure 2 Schematic enlarged view at position c.

[0038] In the figure: 1, piston body; 2, disc spring member; 3, guide rod; 4, disc spring adjusting nut; 5, dust-proof ring; 6, rectangular sealing ring; 7, brake caliper body; 8, O-ring; 9, rubber cone sleeve; 10, cone sleeve compression nut; 11, bolt; 12, winding post; 13, torsion spring; 14, fixing rope; 15, connecting rope; 16, upper scraping plate; 17, transmission rope; 18, lower scraping plate; 19, water-absorbing sponge; 20, rotating rod; 21, return spring; 22, card slot; 23, button; 24, pull rope; 25, sound box; 26, motor; 27, inlet; 28, radiator. Detailed implementation manners

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figures 1-8 , the present invention provides a technical solution: a brake return piston device with an automatic compensation function, including a piston body 1, an inlet 27, a guide rod 3, and a brake caliper body 7;

[0041] The piston body 1 is slidably engaged inside the brake caliper body 7, and an inlet 27 for allowing brake fluid to enter is provided inside the brake caliper body 7;

[0042] The guide rod 3 is slidably engaged on the left side inside the brake caliper body 7;

[0043] It further includes: a disc spring member 2, which is arranged inside the brake caliper body 7, and the disc spring member 2 is located between the disc spring adjusting nut 4 and the piston body 1, and the disc spring adjusting nut 4 is slidably engaged inside the brake caliper body 7; a rectangular sealing ring 6, which is arranged on the inner side inside the brake caliper body 7, and there are two rectangular sealing rings 6, and the rectangular sealing ring 6 is in mutual contact with the outer side of the piston body 1; a rubber cone sleeve 9, which is arranged on the left side inside the brake caliper body 7, and a cone sleeve pressing nut 10 for pressing the rubber cone sleeve 9 is arranged on the outer side of the rubber cone sleeve 9;

[0044] Combined with Figure 2 As shown, when the brake is actuated, the brake fluid pushes the piston body 1 forward, the piston body 1 drives the disc spring adjusting nut 4 forward, the disc spring adjusting nut 4 compresses the disc spring member 2 to the maximum deformation and then drives the guide rod 3 forward to achieve automatic clearance compensation and braking; after the brake is released, the brake fluid is depressurized, and the friction clamping device composed of the cone sleeve pressing nut 10 and the rubber cone sleeve 9 realizes self-locking, the guide rod 3 remains stationary, the disc spring member 2 rebounds and pushes the disc spring adjusting nut 4 backward, and the disc spring adjusting nut 4 drives the piston body 1 to return to the designed clearance to achieve automatic return of the piston body 1; the front end of the inner cavity of the brake caliper body 7 adopts a double rectangular sealing ring 6, and the end adopts a double O-ring 8 for sealing, so that the piston sealing effect is better and the probability of oil leakage is reduced; the clamping member of the guide rod 3 adopts a conical structure, and the friction torque can be adjusted according to the actual design requirements of the product. The rubber cone sleeve 9 is selected, which plays a sealing role while clamping the guide rod 3;

[0045] A radiator 28, which is arranged on the outer side of the brake caliper body 7, and a dust-proof ring 5 for blocking dust is arranged on the right side inside the brake caliper body 7, and an upper scraper 16 and a lower scraper 18 for pushing dust are slidably engaged on the outer side of the dust-proof ring 5; an O-ring 8 for sealing is arranged on the left side inside the brake caliper body 7, and a winding column 12 for winding the brake caliper body 7 is connected by a bearing above the inside of the brake caliper body 7, and a connecting rope 15 for rotating the winding column 12 is arranged between the winding column 12 and the piston body 1; fixing ropes 14 for pulling the upper scraper 16 are arranged on both the left and right sides of the outer side of the winding column 12, and the fixing ropes 14 on both sides are wound around the outer side of the winding column 12, and the winding directions of the fixing ropes 14 on both sides are opposite; the other end of the fixing rope 14 is fixed to the upper scraper 16 for dust treatment, and the upper scraper 16 and the lower scraper 18 are connected by a transmission rope 17, and the sliding distances of the upper scraper 16 and the lower scraper 18 are the same;

[0046] Combined with Figures 2-4As shown, the brake fluid enters the interior of the brake caliper 7 through the inlet 27. The brake fluid inside the brake caliper 7 pushes the internal piston body 1. While the piston body 1 moves forward, it pulls the connecting rope 15. Since the other end of the connecting rope 15 is wound around the winding column 12, the pulling of the connecting rope 15 causes the winding column 12 to rotate. The rotation of the winding column 12 realizes the winding of the right fixing rope 14, and the left fixing rope 14 is in a slack state. The right fixing rope 14 pulls the upper scraper 16 to move. The upper scraper 16 pulls the lower scraper 18 through the transmission rope 17. The movement of the upper scraper 16 and the lower scraper 18 scrapes the dust on the dust-proof ring 5, realizing the treatment of the dust;

[0047] The outer side of the rubber cone sleeve 9 fits with the inner side of the cone sleeve compression nut 10, and the periphery of the rubber cone sleeve 9 is of an inclined structure. Inside the brake caliper 7, there is a water-absorbing sponge 19 for adsorbing the brake fluid. And there are 2 groups of water-absorbing sponges 19. Inside the brake caliper 7, there is a card slot 22 for placing the button 23 and the speaker 25. The periphery inside the card slot 22 is of an inclined structure, and inside the card slot 22, there are the button 23 and the speaker 25. And the button 23 is located above the speaker 25, and the button 23 and the speaker 25 are on the same circuit. Inside the brake caliper 7, there is a rotating rod 20 for pulling the water-absorbing sponge 19. And at the rear side of the rotating rod 20, there is a motor 26 for enabling the rotating rod 20 to rotate with a gap, and the output end of the motor 26 is connected to the rotating rod 20. Between the upper left and right sides of the rotating rod 20 and the water-absorbing sponge 19, there is a pulling rope 24 for enabling the water-absorbing sponge 19 to move downward. And between the water-absorbing sponge 19 and the brake caliper 7, there is a return spring 21 for enabling the water-absorbing sponge 19 to move upward. The water-absorbing sponge 19 is located at the gap between the piston body 1 and the brake caliper 7, and the moving directions of the water-absorbing sponges 19 on the left and right sides are opposite, and the diameter of the water-absorbing sponge 19 is larger than the diameter of the card slot 22;

[0048] Combined with Figure 2 and Figure 7As shown, when the brake fluid leaks, the brake fluid flows to the right, and the water-absorbing sponge 19 on the left adsorbs the brake fluid. The motor 26 drives the rotating rod 20 to rotate. The motor 26 makes the rotating rod 20 rotate left and right, and the angle of a single rotation of the rotating rod 20 is less than 90 degrees. When the rotating rod 20 rotates counterclockwise, the left side of the rotating rod 20 pulls the left pull rope 24, and the left pull rope 24 makes the water-absorbing sponge 19 on the left move downward. The water-absorbing sponge 19 on the left is squeezed through the structure of the card slot 22, so that the water inside the water-absorbing sponge 19 falls above the left button 23, and the gravity of the water makes the button 23 move downward, so that the speaker 25 makes a sound to remind the user that there is an oil leakage inside the brake. While the rotating rod 20 rotates counterclockwise, the right side pushes the water-absorbing sponge 19 on the right, and at the same time, the elastic force of the return spring 21 makes the water-absorbing sponge 19 on the right move upward.

[0049] On the outside of the brake caliper body 7, there are bolts 11 for fixing the brake caliper body 7, and at the upper left corner of the brake caliper body 7, there is an inlet 27 for the brake fluid to enter the inside of the brake caliper body 7. A torsion spring 13 for making the winding column 12 rotate in the reverse direction is wound around the outside of the winding column 12.

[0050] The working principle of this embodiment: When using the brake return piston device with an automatic compensation function, in combination with Figures 1-8 As shown, through the settings of the disc spring adjusting nut 4 and the guide rod 3, the piston body 1 has an automatic compensation function. Through the settings of the rectangular sealing ring 6 and the O-ring 8, the brake fluid is blocked. The speaker 25 monitors the flow of the brake fluid inside the brake to avoid the failure to detect in time after the brake fluid leaks. Through the movement of the lower scraper 18 and the upper scraper 16, the dust on the dust-proof ring 5 is processed to avoid the dust accumulating on the surface of the dust-proof ring 5, thus completing a series of work.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A brake return piston device with an automatic compensation function, comprising a piston body (1), an inlet (27), a guide rod (3) and a brake caliper (7); The piston body (1) is slidably engaged inside the brake caliper (7), and an inlet (27) for allowing brake fluid to enter is provided inside the brake caliper (7); The guide rod (3) is slidably engaged inside the left side of the brake caliper (7); It is characterized in that It further comprises: A disc spring member (2) is provided inside the brake caliper (7), and the disc spring member (2) is located between the disc spring adjusting nut (4) and the piston body (1), and the disc spring adjusting nut (4) is slidably engaged inside the brake caliper (7); A rectangular sealing ring (6) is provided inside the inner side of the brake caliper (7), and there are two rectangular sealing rings (6), and the rectangular sealing ring (6) is in mutual contact with the outer side of the piston body (1); A rubber cone sleeve (9) is provided inside the left side of the brake caliper (7), and a cone sleeve pressing nut (10) for extruding the rubber cone sleeve (9) is provided on the outer side of the rubber cone sleeve (9); A radiator (28) is provided outside the brake caliper (7), and a dust-proof ring (5) for blocking dust is provided inside the right side of the brake caliper (7), and an upper scraping plate (16) and a lower scraping plate (18) for pushing dust are slidably engaged on the outer side of the dust-proof ring (5).

2. The brake return piston device with an automatic compensation function according to claim 1, It is characterized in that: An O-shaped sealing ring (8) for sealing is provided inside the left side of the brake caliper (7), and a winding column (12) for winding the brake caliper (7) is connected by a bearing inside the upper part of the brake caliper (7), and a connecting rope (15) for rotating the winding column (12) is provided between the winding column (12) and the piston body (1).

3. The brake return piston device with an automatic compensation function according to claim 2, It is characterized in that: Fixing ropes (14) for pulling the upper scraping plate (16) are provided on both the left and right sides of the outer side of the winding column (12), and the fixing ropes (14) on both the left and right sides are wound around the outer side of the winding column (12), and the winding directions of the fixing ropes (14) on both the left and right sides are opposite.

4. The brake return piston device with an automatic compensation function according to claim 3, It is characterized in that: One end of the fixing rope (14) is fixed on the upper scraping plate (16) for processing dust, and the upper scraping plate (16) and the lower scraping plate (18) are connected by a transmission rope (17), and the sliding distances of the upper scraping plate (16) and the lower scraping plate (18) are the same.

5. The brake return piston device with an automatic compensation function according to claim 1, It is characterized in that: The outer side of the rubber cone sleeve (9) is in mutual contact with the inner side of the cone sleeve compression nut (10), and the periphery of the rubber cone sleeve (9) is of an inclined structure. A water-absorbing sponge (19) for adsorbing brake fluid is arranged inside the brake caliper body (7), and there are 2 groups of water-absorbing sponges (19). A card slot (22) for placing a button (23) and a speaker (25) is formed inside the brake caliper body (7).

6. The brake return piston device with an automatic compensation function according to claim 5, characterized in that: The periphery inside the card slot (22) is of an inclined structure, and a button (23) and a speaker (25) are arranged inside the card slot (22). The button (23) is located above the speaker (25), and the button (23) and the speaker (25) are on the same circuit.

7. The brake return piston device with an automatic compensation function according to claim 1, characterized in that: A rotating rod (20) for pulling the water-absorbing sponge (19) is arranged inside the brake caliper body (7). A motor (26) for enabling the rotating rod (20) to rotate with a gap is arranged at the rear side of the rotating rod (20), and the output end of the motor (26) is connected to the rotating rod (20).

8. The brake return piston device with an automatic compensation function according to claim 7, characterized in that: Pulling ropes (24) for enabling the water-absorbing sponge (19) to move downward are arranged between the upper left and right sides of the rotating rod (20) and the water-absorbing sponge (19), and a return spring (21) for enabling the water-absorbing sponge (19) to move upward is arranged between the water-absorbing sponge (19) and the brake caliper body (7).

9. The brake return piston device with an automatic compensation function according to claim 5, characterized in that: The water-absorbing sponge (19) is located at the gap between the piston body (1) and the brake caliper body (7). The moving directions of the water-absorbing sponges (19) on the left and right sides are opposite, and the diameter of the water-absorbing sponge (19) is larger than the diameter of the card slot (22).

10. The brake return piston device with an automatic compensation function according to claim 2, characterized in that: Bolts (11) for fixing the brake caliper body (7) are arranged on the outer side of the brake caliper body (7). An inlet (27) through which brake fluid enters the inside of the brake caliper body (7) is arranged at the upper left corner of the brake caliper body (7). A torsion spring (13) for enabling the winding column (12) to rotate in the reverse direction is wound around the outer side of the winding column (12).

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