A type of automotive disc brake pad

Abstract

This application relates to an automotive disc brake pad, belonging to the technical field of automotive brakes. The automotive disc brake pad includes a pad body with multiple heat dissipation holes. A first sliding rod slides through each heat dissipation hole, and the sliding direction of the first sliding rod is parallel to the depth direction of the heat dissipation hole. A pulling member is provided within the heat dissipation hole for pulling the first sliding rod towards the brake disc. Multiple first sleeve rods are hinged to the side of the first sliding rod near the brake disc, and the hinge axis of the first sleeve rods is perpendicular to the sliding direction of the first sliding rod. A first water-absorbing sleeve for absorbing moisture is fitted on the first sleeve rod, and the first water-absorbing sleeve abuts against the side of the pad body near the brake disc. This application has the advantage of maintaining braking performance to a certain extent after water enters the brake.

Description

Technical Field

[0001] This application relates to the field of automotive brake technology, and in particular to an automotive disc brake pad. Background Technology

[0002] A car brake is a device that can slow down, stop, or keep the wheels stationary. Disc brakes are also known as disc brakes, and disc brake pads are also known as brake linings. They are an important part of disc brakes. The pads generate friction by rubbing against the brake disc that rotates synchronously with the wheels, thereby achieving the purpose of slowing down or stopping the vehicle.

[0003] Commercially available automotive disc brake pads mainly consist of pad bodies located on both sides of the brake disc. The pad bodies are hydraulically controlled to move closer to or further away from the brake disc. Multiple heat dissipation holes are formed on the pad bodies, penetrating throughout to enhance heat dissipation. When a car wheel is submerged in water, causing water to enter the brake system, the rotating brake disc splashes water onto the brake pads, reducing the coefficient of friction between the brake disc and the brake pads, thus weakening the braking effect. Summary of the Invention

[0004] To help reduce moisture adhering to the brake disc and brake pads and thus ensure braking performance to a certain extent, this application provides an automotive disc brake pad.

[0005] The technical solution for an automotive disc brake pad provided in this application is as follows:

[0006] A disc brake pad for automobiles includes a pad body with multiple heat dissipation holes. A first sliding rod slidably passes through each heat dissipation hole, the sliding direction of the first sliding rod being parallel to the depth direction of the heat dissipation hole. A pulling member is provided within each heat dissipation hole for pulling the first sliding rod towards the brake disc. Multiple first sleeve rods are hinged to the side of the first sliding rod near the brake disc, the hinge axis of the first sleeve rods being perpendicular to the sliding direction of the first sliding rod. A first water-absorbing sleeve for absorbing moisture is fitted onto the first sleeve rod, the first water-absorbing sleeve abutting against the side of the pad body near the brake disc. A second sliding rod is slidably disposed at the end of the first sliding rod near the brake disc, the sliding direction of the second sliding rod being parallel to the sliding direction of the first sliding rod. One end of the first sliding rod is used to abut against the brake disc. The first sliding rod is provided with a first pushing member for pushing the second sliding rod to slide towards the brake disc. The end of the second sliding rod away from the first sliding rod is provided with a plurality of second sleeve rods. A second water-absorbing sleeve for absorbing moisture is sleeved on the second sleeve rod. The second water-absorbing sleeve is used to abut against the brake disc. The distance from the end of the second sleeve rod away from the second sliding rod to the center of the heat dissipation hole is less than the radius of the heat dissipation hole. The second sliding rod is provided with an adjustment component for adjusting the rotation of the first sleeve rod towards the direction of approaching or moving away from the second sleeve rod when the second sliding rod slides relative to the first sliding rod. When the second sliding rod slides relative to the first sliding rod, the adjustment component adjusts the rotation of the first sleeve rod towards the direction of approaching the second sleeve rod.

[0007] By adopting the above technical solution, when the liner body is detached from the brake disc, the pulling member pulls the first sliding rod to slide a certain distance towards the brake disc, pushing the first and second sleeve rods out of the heat dissipation holes. The first pushing member pushes the second sliding rod to slide a certain distance towards the brake disc. At this time, the adjusting component adjusts the first sleeve rod to rotate away from the second sleeve rod, causing the first sleeve rod to unfold. The first water-absorbing sleeve abuts against the side of the liner body near the brake disc. When water adheres to the liner body, the first water-absorbing sleeve can absorb the water on the liner body, reducing the amount of water adhering to the liner body. When the car needs to decelerate or stop, the liner body drives the first and second sliding rods closer to the brake disc, and the second sliding rod... The second water-absorbing sleeve on the rod first comes into contact with the brake disc, absorbing a certain amount of moisture from the brake disc. The brake disc can then come into contact with and push the second sliding rod to slide relative to the first sliding rod. The first sleeve rod is adjusted to rotate towards the second sleeve rod to retract. As the pad body continues to approach the brake disc, after the second sleeve rod comes into contact with the first sliding rod, the brake disc comes into contact with and pushes the first sliding rod to move towards the heat dissipation hole. This causes the first sliding rod, the second sliding rod, the first sleeve rod, and the second sleeve rod to move into the heat dissipation hole, thus reducing the amount of moisture adhering to the pad body when it comes into contact with the brake disc, ensuring braking performance to a certain extent, while not affecting the braking between the pad body and the brake disc.

[0008] Preferably, the adjustment assembly includes a pull rope disposed at one end of the second sliding rod near the first sliding rod and a driving member disposed on the first sliding rod. The end of the pull rope away from the second sliding rod slides through the first sliding rod and is disposed on the first sleeve rod. The first sliding rod has a through hole for the pull rope to pass through. The through hole is located on the side of the first sleeve rod near the second sleeve rod. The end of the second sliding rod near the first sliding rod is located on the side of the through hole near the first sleeve rod. The driving member is used to drive the first sleeve rod to rotate in a direction away from the second sleeve rod.

[0009] By adopting the above technical solution, when the second sliding rod slides relative to the first sliding rod in a direction closer to it, the pull rope is pulled, causing the pull rope to pull the first sleeve rod to rotate in a direction closer to the through hole, which helps to retract the first sleeve rod and facilitate its movement into the heat dissipation hole; when the second sliding rod slides away from the first sliding rod, the tension of the pull rope on the first sleeve rod decreases, and the first sleeve rod is rotated away from the second sleeve rod by the driving component, which helps to make the first water-absorbing sleeve abut against the side of the pad body close to the brake disc, reducing the moisture adhering to the pad body and ensuring the braking effect after water enters the brake; at the same time, when the temperature rises, the moisture will evaporate in the first water-absorbing sleeve, reducing the possibility of the pad body shrinking when the moisture evaporates due to water absorption by the pad body, which helps to reduce the wear rate of the pad body.

[0010] Preferably, the first sleeve rod is provided with a rotating shaft, the rotating shaft rotates on the first sliding rod, and the driving component includes a first torsion spring for driving the first sleeve rod to rotate in a direction away from the second sleeve rod. The first torsion spring is sleeved on the rotating shaft, one end of the first torsion spring is provided on the first sliding rod, and the other end is provided on the first sleeve rod.

[0011] By adopting the above technical solution, the first sleeve rod is rotated away from the second sleeve rod by the first torsion spring, so that the first sleeve rod is unfolded. This helps the first water-absorbing sleeve to come into contact with the side of the lining body that is close to the brake disc, absorb the water on the lining body, reduce the water adhering to the lining body during braking, and thus help to ensure the braking effect.

[0012] Preferably, the pulling member includes a tension spring for pulling the first sliding rod to slide towards the brake disc. The tension spring is sleeved on the first sliding rod, with one end of the tension spring disposed in a heat dissipation hole and the other end disposed on the first sliding rod.

[0013] By adopting the above technical solution, after the liner body is separated from the brake disc, the tension spring pulls the first sliding rod and drives the second sliding rod to slide towards the brake disc, moving the first and second sleeve rods out of the heat dissipation hole. During braking, this facilitates the second water-absorbing sleeve to first come into contact with the brake disc and absorb the moisture on the brake disc, which helps to ensure the braking effect.

[0014] Preferably, the first pushing member includes a first spring for pushing the second sliding rod to slide in a direction closer to the brake disc. One end of the first spring is disposed inside the first sliding rod, and the other end is disposed at the end of the second sliding rod near the first sliding rod. The pushing force of the first spring is less than the tension force of the tension spring.

[0015] By adopting the above technical solution, the first spring pushes the second sliding rod to move a certain distance toward the brake disc, which facilitates the rotation and unfolding of the first sleeve rod, helps the first water-absorbing sleeve to abut against the liner body, reduces the moisture adhering to the liner body, and ensures the braking effect to a certain extent.

[0016] Preferably, both the first and second absorbent sleeves are embedded with a stretchable low-temperature heating wire. The first sliding rod is provided with a transmission line, which corresponds one-to-one with the low-temperature heating wire. The low-temperature heating wire is connected to the corresponding transmission line. The end of the transmission line away from the low-temperature heating wire is used to connect to an external controller. The heat dissipation hole is provided with an opening and closing component for controlling the external controller to disconnect or connect the transmission line.

[0017] By adopting the above technical solution, after the first and second absorbent jackets absorb a certain amount of water, the external controller is controlled by the opening and closing component to connect the transmission line to raise the temperature of the low-temperature heating wire. The low-temperature heating wire helps to accelerate the evaporation of water in the first and second absorbent jackets, which to a certain extent ensures the water absorption effect of the first and second absorbent jackets, thereby helping to absorb more water.

[0018] Preferably, the opening and closing assembly includes a vertical rod disposed in a heat dissipation hole, a connecting rod slidably sleeved on the vertical rod, a contact switch disposed on the vertical rod, and a second pushing member disposed in the heat dissipation hole. The sliding direction of the connecting rod is arranged in the vertical direction. The connecting rod is used to abut against the contact switch. The end of the connecting rod away from the vertical rod is slidably connected to a first sliding rod. The contact switch is used to connect to an external controller. The second pushing member is used to push the connecting rod to slide in a direction away from the contact switch.

[0019] By adopting the above technical solution, when the first and second absorbent sleeves absorb a certain amount of water, their weight will increase, causing the connecting rod to slide towards the upright, thereby touching the contact switch. At this time, the contact switch controls the external controller to connect the transmission line, which helps the low-temperature heating wire to accelerate the evaporation of water in the first and second absorbent sleeves, ensuring the water absorption effect of the first and second absorbent sleeves.

[0020] Preferably, the second pushing member includes a second spring for pushing the connecting rod to slide away from the contact switch. The second spring is sleeved on the outside of the upright, with one end of the second spring disposed in a heat dissipation hole and the other end disposed on the connecting rod.

[0021] By adopting the above technical solution, after the water in the first and second absorbent jackets evaporates, the weight is reduced. The second spring pushes the connecting rod to move the first and second sliding rods upward, causing the connecting rod to disengage from the contact switch. At this time, the contact switch controls the external controller to disconnect the transmission line, so that the temperature of the first and second absorbent jackets is not too high.

[0022] Preferably, an extension rod is rotatably connected to the end of the second sleeve rod away from the second sliding rod. The rotation axis of the extension rod is perpendicular to the sliding direction of the second sliding rod. The second absorbent sleeve extends to the extension rod. The second absorbent sleeve is a flexible absorbent sleeve with extensibility. The second sliding rod is provided with a driving member for driving the extension rod to rotate toward or away from the first sleeve rod when the second sliding rod slides relative to the first sliding rod. When the second sliding rod slides relative to the first sliding rod, the driving member drives the extension rod to rotate toward the first sleeve rod.

[0023] By adopting the above technical solution, when the second sliding rod slides relative to the first sliding rod in a direction away from the first sliding rod, the driving component drives the extension rod to rotate in a direction away from the first sleeve rod, which facilitates the contact between the third water suction sleeve and the brake disc, helps to increase the water suction range of the brake disc, improves the water suction effect, and further ensures the braking effect; when the second sliding rod slides relative to the first sliding rod in a direction close to the first sliding rod, the driving component drives the extension rod to rotate in a direction close to the first sleeve rod, which helps to move the extension rod into the heat dissipation hole and reduce the impact on the braking of the lining body.

[0024] Preferably, the driving component includes a connecting rope mounted on the extension rod, a drum rotatably mounted on the first sliding rod, a gear coaxially connected to the drum, a rack mounted inside the first sliding rod, and a second torsion spring mounted on the second sleeve rod. The drum and connecting rope are one-to-one, with the end of the connecting rope away from the extension rod wound around the corresponding drum. The drum is located on the side of the second sleeve rod closer to the first sleeve rod, and the rotation axis of the drum is perpendicular to the sliding direction of the second sliding rod. The rack and gear are one-to-one, with the gear meshing with the corresponding rack. The rack is located between the first and second sleeve rods. The thrust of the first spring is greater than the frictional force between the gear and the rack. A rotating rod is mounted on the extension rod, rotating on the second sleeve rod. The second torsion spring is sleeved on the rotating rod, driving the extension rod to rotate away from the first sleeve rod. When the gear rolls along the rack towards the first sleeve rod, the drum winds up the connecting rope.

[0025] By adopting the above technical solution, when the second sliding rod slides relative to the first sliding rod, the drum and gear move towards the corresponding rack, causing the gear to roll along the corresponding rack. The gear drives the drum to rotate and wind up the connecting rope, thereby causing the connecting rope to pull the extension rod to rotate towards the first sleeve rod, which helps to move the extension rod into the heat dissipation hole. When the second sliding rod slides away from the first sliding rod, the gear rolls in the opposite direction along the rack, causing the drum to unwind the connecting rope. At this time, under the action of the second torsion spring, the extension rod is driven to rotate away from the first sleeve rod, causing the extension rod to unfold, which helps to increase the water absorption range of the brake disc and ensure the braking effect.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] When the brake pad body is detached from the brake disc, the pulling member pulls the first sliding rod to slide a certain distance towards the brake disc, pushing the first and second sleeve rods out of the heat dissipation holes. The first pushing member pushes the second sliding rod to slide a certain distance towards the brake disc. At this time, the adjusting component adjusts the first sleeve rod to rotate away from the second sleeve rod. The first water-absorbing sleeve abuts against the side of the brake pad body closest to the brake disc. When water adheres to the brake pad body, the first water-absorbing sleeve can absorb the water on the brake pad body, reducing the amount of water adhering to the brake pad body. When the car needs to decelerate or stop, the brake pad body drives the first and second sliding rods to approach the brake disc. The second water-absorbing sleeve on the second sliding rod first abuts against the brake disc. The second water-absorbing sleeve absorbs a certain amount of water on the brake disc, so that when the brake pad body contacts the brake disc, there is less water adhering to it, which to a certain extent ensures the braking effect.

[0028] When the second sliding rod slides away from the first sliding rod, the gear rolls in the opposite direction along the rack, causing the drum to unwind the connecting rope. At this time, under the action of the second torsion spring, the extension rod rotates away from the first set of rods, causing the extension rod to unfold, which helps to increase the water absorption range of the brake disc and further ensure the braking effect. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0030] Figure 2 This is a partial structural cross-sectional view of an embodiment of this application.

[0031] Figure 3 This is a partial structural cross-sectional view of an embodiment of this application.

[0032] Figure 4 yes Figure 3 Enlarged view of section A.

[0033] Figure 5 yes Figure 3 Enlarged view of section B.

[0034] Explanation of reference numerals in the attached drawings: 1. Liner body; 2. Heat dissipation hole; 3. First sliding rod; 4. First sleeve rod; 5. First water-absorbing sleeve; 6. Second sliding rod; 7. Second sleeve rod; 8. Second water-absorbing sleeve; 9. Adjustment assembly; 91. Pull rope; 92. Drive component; 921. First torsion spring; 10. Through hole; 11. Rotating shaft; 12. Tension spring; 13. First spring; 14. Low-temperature heating wire; 15. Conveyor line; 16. Opening and closing assembly; 161. Upright pole; 162. Connecting rod; 163. Contact switch; 164. Second pusher; 1641. Second spring; 17. Extension rod; 18. Connecting rope; 19. Drum; 20. Gear; 21. Rack; 22. Second torsion spring; 23. Rotating rod; 24. Mounting ring; 25. Support rod; 26. Mounting plate; 27. Fixing rod; 28. Telescopic rod; 29. ​​Support plate; 30. Guide bar; 31. Guide groove. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses an automotive disc brake pad. (Refer to...) Figure 1 and Figure 2 The automotive disc brake pad includes a pad body 1, on which multiple heat dissipation holes 2 are formed. A mounting ring 24 is fixedly connected inside the heat dissipation holes 2. The diameter of the mounting ring 24 is smaller than the diameter of the heat dissipation hole 2. The mounting ring 24 and the heat dissipation hole 2 are fixed together by four support rods 25 to reduce the impact on heat dissipation. A first sliding rod 3 is slidably inserted inside the mounting ring 24. The sliding direction of the first sliding rod 3 is parallel to the depth direction of the heat dissipation hole 2, and the length direction of the first sliding rod 3 is parallel to the sliding direction of the first sliding rod 3. The first sliding rod 3 has a hollow structure. A pulling member is provided inside the heat dissipation hole 2 for pulling the first sliding rod 3 towards the brake disc. The pulling member includes a tension spring 12 for pulling the first sliding rod 3 towards the brake disc. The tension spring 12 is sleeved on the end of the first sliding rod 3 away from the brake disc. One end of the tension spring 12 is fixedly connected to the side of the mounting ring 24 away from the brake disc, and the other end is fixedly connected to the end of the first sliding rod 3 away from the brake disc.

[0037] Reference Figure 3 and Figure 4 A plurality of first sleeve rods 4 are hinged to the side of the first sliding rod 3 near the brake disc. In this embodiment, four first sleeve rods 4 are spaced apart along the circumference of the first sliding rod 3. A rotating shaft 11 is fixed on the first sleeve rod 4. The rotating shaft 11 is rotatably connected to the first sliding rod 3. The hinge axis of the first sleeve rod 4 is perpendicular to the sliding direction of the first sliding rod 3. The length of the first sleeve rod 4 is equal to the distance from the rotating shaft 11 to the end of the first sliding rod 3 near the brake disc.

[0038] Reference Figure 2 and Figure 4 A first absorbent sleeve 5 for absorbing moisture is fitted onto the first rod 4. The first absorbent sleeve 5 is used to abut against the side of the liner body 1 near the brake disc. A second sliding rod 6 is slidably disposed inside the end of the first sliding rod 3 near the brake disc. The sliding direction of the second sliding rod 6 is parallel to the sliding direction of the first sliding rod 3. The second sliding rod 6 is located on the side of the mounting ring 24 near the brake disc. The end of the second sliding rod 6 away from the first sliding rod 3 is used to abut against the brake disc. A mounting plate 26 is fixed inside the first sliding rod 3. The diameter of the mounting plate 26 is smaller than the inner diameter of the first sliding rod 3. The mounting plate 26 is fixed to the inner wall of the first sliding rod 3 by two fixing rods 27 to reduce the impact on heat dissipation. The mounting plate 26 is located on the second sliding rod 6 near the mounting ring 24. On one side, a telescopic rod 28 is fixed to the side of the mounting plate 26 near the second sliding rod 6. The telescopic direction of the telescopic rod 28 is parallel to the sliding direction of the second sliding rod 6. The end of the telescopic rod 28 away from the mounting plate 26 is fixed to the side of the second sliding rod 6 near the mounting plate 26. The mounting plate 26 is provided with a first pushing member for pushing the second sliding rod 6 to slide towards the brake disc. The first pushing member includes a first spring 13 for pushing the second sliding rod 6 to slide towards the brake disc. The first spring 13 is movably sleeved on the telescopic rod 28. One end of the first spring 13 is fixedly connected to the mounting plate 26, and the other end is fixedly connected to the side of the second sliding rod 6 near the mounting plate 26. The pushing force of the first spring 13 is less than the tension force of the tension spring 12.

[0039] Reference Figure 2 and Figure 3 A plurality of second sleeve rods 7 are fixed to the end of the second sliding rod 6 away from the first sliding rod 3. The length direction of the second sleeve rods 7 is perpendicular to the sliding direction of the second sliding rod 6. The second sleeve rods 7 are located on the side of the first sleeve rod 4 away from the mounting ring 24. In this embodiment, four second sleeve rods 7 are arranged circumferentially along the second sliding rod 6, and the second sleeve rods 7 and the first sleeve rods 4 are staggered. A second absorbent sleeve 8 for absorbing water is fixedly sleeved on the second sleeve rod 7. The first absorbent sleeve 5 and the second absorbent sleeve 8 are both flexible absorbent sleeves with extensibility. In this embodiment, the first absorbent sleeve 5 and the second absorbent sleeve 8 are sponge sleeves; the second absorbent sleeve 8 is used for The second sleeve rod 7, which is in contact with the brake disc, has a distance from the end of the second sliding rod 6 away from the center of the heat dissipation hole 2 that is less than the radius of the heat dissipation hole 2. The distance from the end of the second sleeve rod 7 away from the second sliding rod 6 to the center of the heat dissipation hole 2 is greater than the distance from the outer wall of the first sliding rod 3 to the center of the heat dissipation hole 2. The second sliding rod 6 is provided with an adjustment component 9 for adjusting the first sleeve rod 4 to rotate toward or away from the second sleeve rod 7 when the second sliding rod 6 and the first sliding rod 3 slide relative to each other. When the second sliding rod 6 slides relative to the first sliding rod 3, the adjustment component 9 adjusts the first sleeve rod 4 to rotate toward the second sleeve rod 7.

[0040] When the lining body 1 moves away from the brake disc and disengages from it, the tension spring 12 pulls the first sliding rod 3 to slide towards the brake disc, causing the first sliding rod 3 to move the first sleeve rod 4 and the second sleeve rod 7 out of the heat dissipation hole 2. The rotating shaft 11 is located at the opening of the heat dissipation hole 2. Then, the first spring 13 pushes the second sliding rod 6 to slide towards the brake disc. The first sleeve rod 4 is adjusted to rotate away from the second sleeve rod 7 by the adjusting component 9, so that the first sleeve rod 4 is extended to be perpendicular to the first sliding rod 3. The first water-absorbing sleeve 5 abuts against the side of the lining body 1 near the brake disc. When water enters the brake and the rotating brake disc splashes water onto the lining body 1, the first water-absorbing sleeve 5, which abuts against the lining body 1, can absorb a certain amount of water, thereby reducing the water adhering to the lining body 1. When the lining body 1 moves towards the brake disc, causing the wheel to decelerate or stop, the second sliding rod 6 and the second water-absorbing sleeve 5... The water jacket 8 first abuts against the brake disc, causing the second sliding rod 6 to slide relative to the first sliding rod 3. At this time, the first spring 13 is compressed, and the first sleeve rod 4 is adjusted to rotate relative to the second sleeve rod 7 by the adjusting component 9. The first sleeve rod 4 is retracted until the distance from the end of the first sleeve rod 4 away from the first sliding rod 3 to the center of the heat dissipation hole 2 is less than the radius of the heat dissipation hole 2. During the process of the second water-absorbing jacket 8 abutting against the brake disc, it absorbs the moisture on the brake disc. Then the second sleeve rod 7 moves to abut against the first sliding rod 3. At this time, the pad body 1 continues to approach the brake disc, causing the brake disc to abut against the second sliding rod 6 and push the first sliding rod 3 to slide relative to the pad body 1. This moves the first sliding rod 3, the second sliding rod 6, the first sleeve rod 4, and the second sleeve rod 7 into the heat dissipation hole 2, reducing the impact on the braking of the pad body 1 and reducing the moisture on the pad body 1 and the brake disc, which helps to ensure the braking effect.

[0041] Reference Figure 3 and Figure 4 To facilitate adjustment of the rotation of the first sleeve rod 4, the adjustment assembly 9 includes a pull rope 91 fixedly connected to one end of the second sliding rod 6 near the mounting plate 26 and a drive member 92 disposed on the first sliding rod 3. The end of the pull rope 91 away from the second sliding rod 6 slides through the first sliding rod 3 and is fixed to one end of the first sleeve rod 4 near the first sliding rod 3. The first sliding rod 3 has a through hole 10 for the pull rope 91 to pass through. The through hole 10 is located on the side of the rotating shaft 11 near the second sleeve rod 7. The end of the second sliding rod 6 near the mounting plate 26 is located on the side of the through hole 10 near the first sleeve rod 4. The drive member 92 is used to drive the first sleeve rod 4 to rotate in a direction away from the second sleeve rod 7. The drive member 92 includes a first torsion spring 921 for driving the first sleeve rod 4 to rotate in a direction away from the second sleeve rod 7. The first torsion spring 921 is movably sleeved on the rotating shaft 11. One end of the first torsion spring 921 is fixedly connected to the first sliding rod 3, and the other end is fixedly connected to the first sleeve rod 4.

[0042] When the second sliding rod 6 slides relative to the first sliding rod 3, it causes the second sliding rod 6 to move the pull rope 91. The pull rope 91 pulls the first sleeve rod 4 to rotate towards the second sleeve rod 7, causing the first sleeve rod 4 to retract. This facilitates moving the first sleeve rod 4 into the heat dissipation hole 2 and reduces the impact on the braking of the liner body 1. When the second sliding rod 6 slides relative to the first sliding rod 3, the tension of the pull rope 91 on the first sleeve rod 4 decreases. At this time, the first torsion spring 921 drives the first sleeve rod 4 to rotate away from the second sleeve rod 7, causing the first sleeve rod 4 to unfold. This helps the first water-absorbing sleeve 5 to contact the liner body 1. When water adheres to the liner body 1, it facilitates the absorption of water on the liner body 1, ensuring the braking effect to a certain extent.

[0043] Reference Figure 3 and Figure 4 The end of the second sleeve rod 7 away from the second sliding rod 6 is rotatably connected to an extension rod 17. The rotation axis of the extension rod 17 is perpendicular to the sliding direction of the second sliding rod 6. A rotating rod 23 is fixed on the extension rod 17. The rotating rod 23 rotates on the corresponding second sleeve rod 7. The second absorbent sleeve 8 extends to the extension rod 17. The second sliding rod 6 is provided with a driving member for driving the extension rod 17 to rotate toward or away from the first sleeve rod 4 when the second sliding rod 6 slides relative to the first sliding rod 3. When the second sliding rod 6 slides relative to the first sliding rod 3, the driving member drives the extension rod 17 to rotate toward the first sleeve rod 4.

[0044] Reference Figure 3 and Figure 4To facilitate the rotation of the extension rod 17, the driving components include a connecting rope 18 fixed to the extension rod 17, a drum 19 rotatably mounted on the outer wall of the second sliding rod 6, a gear 20 coaxially fixed to the drum 19, a rack 21 fixed to the inner wall of the first sliding rod 3, and a second torsion spring 22 mounted on the second sleeve rod 7. The drum 19 and the connecting rope 18 correspond one-to-one. The drum 19 is located inside the first sliding rod 3. One end of the connecting rope 18 away from the extension rod 17 extends into the first sliding rod 3 from its end and then winds around the corresponding drum 19. The drum 19 is located on the side of the second sleeve rod 7 closest to the first sleeve rod 4. The rotation axis of the gear 20 is perpendicular to the sliding direction of the second sliding rod 6. The rack 21 and the gear 20 correspond one-to-one. The rack 21 is located between the first sleeve rod 4 and the second sleeve rod 7. Gear 20 is used to mesh with the corresponding rack 21. The second torsion spring 22 is movably sleeved on the rotating rod 23. The second torsion spring 22 is used to drive the extension rod 17 to rotate away from the first sleeve rod 4. One end of the second torsion spring 22 is fixed on the second sleeve rod 7, and the other end is fixed on the extension rod 17. The thrust of the first spring 13 is greater than the friction between gear 20 and rack 21. When the liner body 1 is disengaged from the brake disc, gear 20 and rack 21 are disengaged. Gear 20 is located on the side of rack 21 away from mounting ring 24, and the length direction of extension rod 17 is parallel to the length direction of second spring rod. When gear 20 rolls along rack 21 towards the direction closer to first sleeve rod 4, drum 19 winds up connecting rope 18. When second sleeve rod 7 abuts against first sliding rod 3, gear 20 and corresponding rack 21 are meshed.

[0045] When the liner body 1 is disengaged from the brake disc, and the first spring 13 pushes the second sliding rod 6 to slide relative to it in a direction away from the first sliding rod 3, the gear 20 rolls along the corresponding rack 21, causing the drum 19 to rotate and unwind the connecting rope 18 until the gear 20 and rack 21 disengage. At this time, the second torsion spring 22 drives the extension rod 17 to rotate in a direction away from the first sleeve rod 4, so that the extension rod 17 unfolds to be parallel to the second sleeve rod 7. When there is water adhering to the brake disc, and it is necessary to slow down or stop the wheel, the liner body 1 is brought close to the brake disc. When the brake disc abuts against the second sliding rod 6, the extension rod 1... 7. The second water-absorbing sleeve 8 outside the second sleeve rod 7 absorbs the water on the brake disc, expanding the water absorption range and further ensuring the braking effect; then the second sliding rod 6 drives the gear 20 to move to the corresponding rack 21. The gear 20 rolls along the corresponding rack 21 towards the first sleeve rod 4, driving the drum 19 to rotate and wind up the connecting rope 18. The connecting rope 18 pulls the extension rod 17 to rotate and retract towards the first sleeve rod 4 until the end of the extension rod 17 away from the second sleeve rod 7 is smaller than the radius of the heat dissipation hole 2, which helps to move the extension rod 17 into the heat dissipation hole 2.

[0046] Reference Figure 2 and Figure 4 Both the first absorbent sleeve 5 and the second absorbent sleeve 8 are embedded with a stretchable low-temperature heating wire 14. The first sliding rod 3 is embedded with a transmission line 15, which corresponds one-to-one with the low-temperature heating wire 14. The length direction of the transmission line 15 is set along the length direction of the first sliding rod 3. The transmission line 15 is a flexible wire. The low-temperature heating wire 14 is connected to the corresponding transmission line 15. The end of the transmission line 15 away from the low-temperature heating wire 14 is used to connect to an external controller. The heat dissipation hole 2 is provided with an opening and closing component 16 for controlling the external controller to turn the transmission line 15 on or off.

[0047] Reference Figure 3 and Figure 5 The opening and closing assembly 16 includes a vertical rod 161 fixedly connected to the inner wall of the mounting ring 24, a connecting rod 162 slidably sleeved on the vertical rod 161, a contact switch 163 fixedly installed on the top wall of the vertical rod 161, and a second pusher 164 disposed in the heat dissipation hole 2. In this embodiment, the contact switch 163 is a limit switch. The length direction of the vertical rod 161 is arranged vertically, and the sliding direction of the connecting rod 162 is arranged vertically. A support plate 29 is fixedly connected to the end of the connecting rod 162 away from the vertical rod 161. A first sliding rod 3 is located above the support plate 29. A guide strip 30 is fixed to the side of the first sliding rod 3 near the support plate 29. The guide strip 30 extends along the length of the first sliding rod 3. Extending in the angular direction, the guide bar 30 has a T-shaped longitudinal section. A guide groove 31 is provided on the support plate 29 to slide in conjunction with the guide bar 30. The connecting rod 162 is used to abut against the contact switch 163, which is used to connect to an external controller. The second pushing member 164 is used to push the connecting rod 162 to slide away from the contact switch 163. The second pushing member 164 includes a second spring 1641 for pushing the connecting rod 162 to slide away from the contact switch 163. The second spring 1641 is sleeved on the outside of the upright 161 and the connecting rod 162. One end of the second spring 1641 is fixedly connected to the inner wall of the mounting ring 24, and the other end is fixedly connected to the connecting rod 162. In other embodiments, the external controller can be configured to limit the connection time of the transmission line 15 to prevent the temperature of the first absorbent sleeve 5 and the second absorbent sleeve 8 from becoming too high.

[0048] When the first absorbent sleeve 5 and the second absorbent sleeve 8 absorb a certain amount of water, their weight will increase. At this time, the first sliding rod 3 will cause the support plate 29 and the connecting rod 162 to move downward, so that the connecting rod 162 abuts against the contact switch 163. The contact switch 163 controls the external controller to connect the transmission line 15 and heat the low-temperature heating wire 14, which helps to accelerate the evaporation of water in the first absorbent sleeve 5 and the second absorbent sleeve 8 and maintain the water absorption effect of the first absorbent sleeve 5 and the second absorbent sleeve 8. When the water in the first absorbent sleeve 5 and the second absorbent sleeve 8 evaporates to a certain extent, their weight will decrease. At this time, the second spring 1641 pushes the connecting rod 162 and the support plate 29 to drive the first sliding rod 3 upward, so that the connecting rod 162 disengages from the contact switch 163. At this time, the contact switch 163 controls the external controller to disconnect the transmission line 15, so that the temperature of the first absorbent sleeve 5 and the second absorbent sleeve 8 does not become too high, thus ensuring safety.

[0049] The implementation principle of this application embodiment is as follows: When the liner body 1 moves away from the brake disc and disengages from the brake disc, the tension spring 12 pulls the first sliding rod 3 to slide relative to the liner body 1 towards the brake disc. The end of the first sliding rod 3 near the brake disc moves out of the heat dissipation hole 2, causing the first sleeve rod 4, the second sleeve rod 7, and the extension rod 17 to move out of the heat dissipation hole 2. Then, the first spring 13 pushes the second sliding rod 6 to slide relative to the first sliding rod 3 towards the brake disc, reducing the tension of the pull rope 91 on the first sleeve rod 4. At this time, the first torsion spring 921 drives the first sleeve rod 4 to rotate away from the second sleeve rod 7. The first sleeve rod 4 is extended, and the first water-absorbing sleeve 5 abuts against the liner body 1. At the same time, the gear 20 rolls away from the first sleeve rod 4 along the corresponding rack 21, driving the drum 19 to rotate and unwind the connecting rope 18 until the gear 20 and rack 21 disengage. At this time, the second torsion spring 22 drives the extension rod 17 to rotate away from the first sleeve rod 4, so that the extension rod 17 is extended and parallel to the second sleeve rod 7. When the wheel is wading through water, the rotating brake disc splashes water onto the liner body 1. The first water-absorbing sleeve 5, which abuts against the liner body 1, can absorb a certain amount of water, thereby helping to reduce the water adhering to the liner body 1.

[0050] When the liner body 1 moves towards the brake disc, causing the wheel to decelerate or stop, the second sliding rod 6 and the second water-absorbing sleeve 8 first come into contact with the brake disc. The second water-absorbing sleeve 8 absorbs water from the brake disc. The second sliding rod 6 slides relative to the first sliding rod 3, compressing the first spring 13. The second sliding rod 6 then moves the pull rope 91, which pulls the first sleeve rod 4 towards the second sleeve rod 7, causing the first sleeve rod 4 to retract. At the same time, the second sliding rod 6 moves the gear 20 to the corresponding rack 21. The gear 20 rolls along the corresponding rack 21, causing the drum 19 to rotate and wind up the connecting rope 18. The connecting rope 18 then pulls the extension rod. 17 rotates and retracts towards the direction of the first sleeve rod 4 until the end of the extension rod 17 away from the second sleeve rod 7 is less than the radius of the heat dissipation hole 2. Then the pad body 1 continues to approach the brake disc. When the end of the second sleeve rod 7 abuts against the first sliding rod 3, the brake disc pushes the first sliding rod 3 to slide relative to the pad body 1 by abutting against the second sliding rod 6. At this time, the tension spring 12 is stretched, thereby moving the first sliding rod 3, the second sliding rod 6, the first sleeve rod 4, the second sleeve rod 7 and the extension rod 17 into the heat dissipation hole 2, reducing the impact on the braking of the pad body 1, reducing the moisture on the pad body 1 and the brake disc, and helping to ensure the braking effect.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A disc brake pad for automobiles, comprising a pad body (1), wherein the pad body (1) has a plurality of heat dissipation holes (2), characterized in that: A first sliding rod (3) is slidably inserted into the heat dissipation hole (2). The sliding direction of the first sliding rod (3) is parallel to the depth direction of the heat dissipation hole (2). A pulling member is provided in the heat dissipation hole (2) for pulling the first sliding rod (3) to slide towards the brake disc. A plurality of first sleeve rods (4) are hinged to the side of the first sliding rod (3) near the brake disc. The hinge axis of the first sleeve rods (4) is perpendicular to the sliding direction of the first sliding rod (3). A first water-absorbing sleeve (5) for absorbing moisture is sleeved on the first sleeve rod (4). The first water-absorbing sleeve (5) is used to abut against the side of the pad body (1) near the brake disc. A second sliding rod (6) is slidably disposed at the end of the first sliding rod (3) near the brake disc. The sliding direction of the second sliding rod (6) is parallel to the sliding direction of the first sliding rod (3). The end of the second sliding rod (6) away from the first sliding rod (3) is used to abut against the brake disc. The sliding rod (3) is provided with a first pusher for pushing the second sliding rod (6) to slide towards the brake disc. The end of the second sliding rod (6) away from the first sliding rod (3) is provided with a plurality of second sleeve rods (7). The second sleeve rod (7) is fitted with a second water-absorbing sleeve (8) for absorbing water. The second water-absorbing sleeve (8) is used to abut against the brake disc. The distance from the end of the second sleeve rod (7) away from the second sliding rod (6) to the center of the heat dissipation hole (2) is less than the radius of the heat dissipation hole (2). The second sliding rod (6) is provided with an adjustment component (9) for adjusting the first sleeve rod (4) to rotate towards or away from the second sleeve rod (7) when the second sliding rod (6) slides relative to the first sliding rod (3). When the second sliding rod (6) slides relative to the first sliding rod (3), the adjustment component (9) adjusts the first sleeve rod (4) to rotate towards the second sleeve rod (7).

2. The automotive disc brake pad according to claim 1, characterized in that: The adjustment assembly (9) includes a pull rope (91) disposed at one end of the second sliding rod (6) near the first sliding rod (3) and a drive member (92) disposed on the first sliding rod (3). The end of the pull rope (91) away from the second sliding rod (6) slides through the first sliding rod (3) and is disposed on the first sleeve rod (4). The first sliding rod (3) has a through hole (10) for the pull rope (91) to pass through. The through hole (10) is located on the side of the first sleeve rod (4) near the second sleeve rod (7). The end of the second sliding rod (6) near the first sliding rod (3) is located on the side of the through hole (10) near the first sleeve rod (4). The drive member (92) is used to drive the first sleeve rod (4) to rotate in a direction away from the second sleeve rod (7).

3. The automotive disc brake pad according to claim 2, characterized in that: The first sleeve rod (4) is provided with a rotating shaft (11), which rotates on the first sliding rod (3). The driving member (92) includes a first torsion spring (921) for driving the first sleeve rod (4) to rotate away from the second sleeve rod (7). The first torsion spring (921) is sleeved on the rotating shaft (11), with one end of the first torsion spring (921) on the first sliding rod (3) and the other end on the first sleeve rod (4).

4. The automotive disc brake pad according to claim 1, characterized in that: The pulling component includes a tension spring (12) for pulling the first sliding rod (3) to slide towards the brake disc. The tension spring (12) is sleeved on the first sliding rod (3). One end of the tension spring (12) is disposed in the heat dissipation hole (2), and the other end is disposed on the first sliding rod (3).

5. The automotive disc brake pad according to claim 4, characterized in that: The first pusher includes a first spring (13) for pushing the second sliding rod (6) to slide toward the brake disc. One end of the first spring (13) is disposed inside the first sliding rod (3), and the other end is disposed at the end of the second sliding rod (6) near the first sliding rod (3). The pushing force of the first spring (13) is less than the pulling force of the tension spring (12).

6. A disc brake pad for automobiles according to any one of claims 1-5, characterized in that: Both the first absorbent sleeve (5) and the second absorbent sleeve (8) are embedded with a low-temperature heating wire (14) with extensibility. The first sliding rod (3) is provided with a transmission line (15). The transmission line (15) corresponds one-to-one with the low-temperature heating wire (14). The low-temperature heating wire (14) and the corresponding transmission line (15) are connected. The end of the transmission line (15) away from the low-temperature heating wire (14) is used to connect to an external controller. The heat dissipation hole (2) is provided with an opening and closing component (16) for controlling the external controller to disconnect or connect the transmission line (15).

7. The automotive disc brake pad according to claim 6, characterized in that: The opening and closing assembly (16) includes a vertical rod (161) disposed in the heat dissipation hole (2), a connecting rod (162) slidably sleeved on the vertical rod (161), a contact switch (163) disposed on the vertical rod (161), and a second pusher (164) disposed in the heat dissipation hole (2). The sliding direction of the connecting rod (162) is arranged in the vertical direction. The connecting rod (162) is used to abut against the contact switch (163). The end of the connecting rod (162) away from the vertical rod (161) is slidably connected to the first sliding rod (3). The contact switch (163) is used to connect to an external controller. The second pusher (164) is used to push the connecting rod (162) to slide away from the contact switch (163).

8. The automotive disc brake pad according to claim 7, characterized in that: The second pusher (164) includes a second spring (1641) for pushing the connecting rod (162) to slide away from the contact switch (163). The second spring (1641) is sleeved on the outside of the upright (161), with one end of the second spring (1641) disposed in the heat dissipation hole (2) and the other end disposed on the connecting rod (162).

9. A disc brake pad for automobiles according to claim 5, characterized in that: The end of the second sleeve rod (7) away from the second sliding rod (6) is rotatably connected to an extension rod (17). The rotation axis of the extension rod (17) is perpendicular to the sliding direction of the second sliding rod (6). The second absorbent sleeve (8) extends to the extension rod (17). The second absorbent sleeve (8) is a flexible absorbent sleeve with extensibility. The second sliding rod (6) is provided with a driving member for driving the extension rod (17) to rotate toward or away from the first sleeve rod (4) when the second sliding rod (6) slides relative to the first sliding rod (3). When the second sliding rod (6) slides relative to the first sliding rod (3), the driving member drives the extension rod (17) to rotate toward the first sleeve rod (4).

10. A disc brake pad for automobiles according to claim 9, characterized in that: The driving component includes a connecting rope (18) mounted on the extension rod (17), a drum (19) rotatably mounted on the first sliding rod (3), a gear (20) coaxially connected to the drum (19), a rack (21) mounted inside the first sliding rod (3), and a second torsion spring (22) mounted on the second sleeve rod (7). The drum (19) and the connecting rope (18) correspond one-to-one. The end of the connecting rope (18) away from the extension rod (17) is wound around the corresponding drum (19). The drum (19) is located on the side of the second sleeve rod (7) closer to the first sleeve rod (4). The rotation axis of the drum (19) is perpendicular to the sliding direction of the second sliding rod (6). The rack (21) and the gear (20) In a one-to-one correspondence, the gear (20) is used to mesh with the corresponding rack (21). The rack (21) is located between the first sleeve rod (4) and the second sleeve rod (7). The thrust of the first spring (13) is greater than the friction between the gear (20) and the rack (21). A rotating rod (23) is provided on the extension rod (17). The rotating rod (23) rotates on the second sleeve rod (7). The second torsion spring (22) is sleeved on the rotating rod (23). The second torsion spring (22) is used to drive the extension rod (17) to rotate in a direction away from the first sleeve rod (4). When the gear (20) rolls along the rack (21) in a direction closer to the first sleeve rod (4), the drum (19) winds up the connecting rope (18).

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