A new brake pad device

Abstract

The application discloses a novel brake shoe device and relates to the technical field of brake shoes, which comprises a brake cover, a brake groove is formed in the inner side of the brake cover, a first arc-shaped brake shoe and a second arc-shaped brake shoe are arranged in the brake groove, an adjusting structure is connected to the left ends of the first arc-shaped brake shoe and the second arc-shaped brake shoe, an elastic structure is arranged between the first arc-shaped brake shoe and the second arc-shaped brake shoe, and a pushing structure is connected to the right ends of the first arc-shaped brake shoe and the second arc-shaped brake shoe. The application has the advantages of good braking effect, safety and stability, and strong practicability.

Description

Technical Field

[0001] This invention relates to the field of brake pad technology, and more specifically to a novel brake pad device. Background Technology

[0002] Brake pads are a crucial component of the braking system, directly impacting its performance. They are typically categorized into drum, disc, and disc brakes. Drum brakes are the most common due to their reliability and powerful braking force. Drum brakes utilize a mechanical transmission structure to push the brake pads against the inner edge of the brake drum during braking. The resulting friction inhibits tire rotation, achieving braking. In actual use, continuous braking and deceleration cause friction wear and deformation of the brake pad contact surfaces. Over time, this affects the stability and reliability of braking, posing safety hazards and impacting the user experience. Furthermore, frequent braking and deceleration cause the brake pads to be pushed repeatedly, leading to excessive vibration and instability. External impurities often affect the friction contact surfaces of the pushing structure, reducing contact stability. Additionally, it increases lubricant usage and consumption; excessive lubricant can lead to leakage and other adverse consequences. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a novel brake pad device.

[0004] A novel brake pad device includes a brake cover with a brake groove on its inner side. A first arc-shaped brake shoe and a second arc-shaped brake shoe are disposed within the brake groove. An adjustment structure is connected to the left ends of the first and second arc-shaped brake shoes. An elastic structure is provided between the first and second arc-shaped brake shoes. A pushing structure is connected to the right ends of the first and second arc-shaped brake shoes. The adjustment structure includes an adjustment part, a first adjustment center, and a second adjustment center. The adjustment part extends from the brake cover and is used to adjust the positions of the first and second adjustment centers. The first and second adjustment centers are respectively connected to the left ends of the first and second arc-shaped brake shoes. The first arc-shaped brake shoe can rotate around the first adjustment center. The arc-shaped brake shoe can rotate around the second adjustment center. The pushing structure is used to push the first arc-shaped brake shoe and the second arc-shaped brake shoe to move after movement. The pushing structure includes a mounting cavity fixed in the brake groove. A drive rod passes through the mounting cavity. A brake arm located outside the brake cover is connected and fixed to the end of the drive rod. A push wheel located in the mounting cavity is fixed on the drive rod. Two symmetrical arc-shaped protrusions are provided on the push wheel. The front and rear sides of the push wheel respectively contact a first sliding thrust part and a second sliding thrust part extending out of the mounting cavity. The first sliding thrust part includes a first outer rolling body located outside the mounting cavity and capable of rotation. The second sliding thrust part includes a second outer rolling body located outside the mounting cavity and capable of rotation. The first outer rolling body contacts the right end of the first arc-shaped brake shoe, and the second outer rolling body contacts the right end of the second arc-shaped brake shoe.In this novel brake pad assembly, a rotating ring that follows the tire's rotation is positioned between the outer sides of the first and second arc-shaped brake shoes and the inner wall of the brake groove. When the pushing structure moves, the first and second arc-shaped brake shoes move towards the inner wall of the brake groove, eventually generating friction with the rotating ring to achieve friction braking. The first and second sliding thrust parts respectively contact the first and second arc-shaped brake shoes via the first and second outer rolling bodies, achieving rolling contact, reducing the contact area, and thus minimizing the impact of external impurities on the contact surface, improving pushing stability. Furthermore, the mounting cavity isolates the pushing wheel, the first sliding thrust part, and the second sliding thrust part from the outside, significantly reducing the impact of external impurities on the frequently moving surface of the pushing wheel, minimizing instability and vibration. Crucially, lubricating oil can be injected into the mounting cavity, and the sealed mounting cavity allows the lubricating oil to fully circulate within the frequently moving surface. The drive wheel is covered, preventing leakage of lubricating oil from the mounting cavity even with relatively high levels, thus improving stability and braking performance, and extending the service life of the entire drive structure. Furthermore, after a certain period, due to the first and second arc-shaped brake shoes rotating before contacting each other, the side with the friction pads in full contact will experience more wear. At this point, the user can directly loosen the adjustment structure and rotate the adjustment part to increase the distance between the first and second adjustment centers. After adjustment, the adjustment part is fixed. When braking again, the initial angles of the first and second arc-shaped brake shoes change under the action of the elastic structure, resulting in a wider range of contact angles with the rotating ring. This compensates for the unreliable braking caused by excessive wear. Simultaneously, under the same brake arm swing amplitude before and after wear, similar frictional force is generated, ensuring consistent braking stroke and preventing braking instability and unreliability, thus guaranteeing a superior user experience.

[0005] Preferably, the drive rod is provided with an oil injection hole, which is connected to an oil injection channel extending through the arc-shaped protrusion surface. The oil injection hole allows direct connection to oil pipelines or other lubricating oil storage structures, enabling lubricating oil to be injected directly from the outside into the oil injection channel. The lubricating oil then flows directly out from the arc-shaped protrusion surface of the drive wheel, directly participating in the lubrication of the friction contact surfaces, thereby improving the lubrication effect. Furthermore, the sealed mounting cavity prevents excessive lubricating oil leakage, further ensuring the lubrication effect.

[0006] Preferably, the adjustment structure further includes a locking track fixed to the inner wall of the brake groove. The first adjustment center and the second adjustment center are engaged within the locking track and can slide along the locking track. The adjustment part is located between the first adjustment center and the second adjustment center and passes through the locking track. The locking track limits the first and second adjustment centers, ensuring that during the rotation of the adjustment part, the first and second adjustment centers can only slide along the locking track, preventing accidental movement and thus preventing abnormal movement of the first and second arc-shaped brake shoes.

[0007] Preferably, the adjustment part includes an adjustment wheel located at the first adjustment center and the second adjustment center. The adjustment wheel has a first protrusion and a second protrusion that are symmetrically arranged on its side. An adjustment rod is fixed to the bottom of the adjustment wheel. The adjustment rod passes through the brake cover and is connected to and fixed to an operating head. The adjustment rod has an external thread and at least two nuts that engage with the external thread are fitted on the adjustment rod. The first and second protrusions of the adjusting wheel are symmetrical. When the adjusting wheel rotates, the first and second protrusions push the first and second adjusting centers respectively. Under the action of the elastic structure, the first and second adjusting centers move simultaneously, ensuring that the positions of the first and second arc-shaped brake shoes are symmetrical. The friction plates on both shoes will simultaneously contact the rotating ring, generating a stable and uniform braking friction force. Furthermore, the adjusting rod extends out of the brake cover, allowing the operating head to be located outside the brake cover. When adjustment is required, the user loosens the two nuts in sequence, then rotates the operating head. After rotating to the preset angle, the user then tightens the two nuts on the outer wall of the brake cover in sequence, so that the bottom surface of the adjusting wheel fully contacts the inner wall of the brake cover. At the same time, the adjusting rod cannot undergo circumferential and axial displacement under the limitation of the external thread, thus forming a reliable fixation.

[0008] Preferably, the first arc-shaped brake shoe includes a first arc-shaped groove at its left end, the first adjustment center is semi-cylindrical, the arc-shaped side of the first adjustment center contacts the inner wall of the first arc-shaped groove, and the vertical side of the first adjustment center contacts the adjustment wheel; a first arc-shaped protrusion is provided on the top side of the first adjustment center, and the first arc-shaped protrusion contacts the top surface of the first arc-shaped brake shoe. The first adjustment center is inserted into the first arc-shaped groove, and under the action of the elastic structure, the inner wall of the first arc-shaped groove reliably contacts the arc-shaped side of the first adjustment center, and the vertical side of the first adjustment center reliably contacts the adjustment wheel; the first arc-shaped protrusion can limit the left end of the first arc-shaped brake shoe, preventing it from moving vertically.

[0009] Preferably, the second arc-shaped brake shoe includes a second arc-shaped groove at its left end, the second adjustment center is semi-cylindrical, the arc-shaped side of the second adjustment center contacts the inner wall of the second arc-shaped groove, and the vertical side of the second adjustment center contacts the adjustment wheel; a second arc-shaped protrusion is provided on the top side of the second adjustment center, and the second arc-shaped protrusion contacts the top surface of the second arc-shaped brake shoe. Similarly, the second adjustment center is inserted into the second arc-shaped groove, and under the action of the elastic structure, the inner wall of the second arc-shaped groove reliably contacts the arc-shaped side of the second adjustment center, and the vertical side of the second adjustment center reliably contacts the adjustment wheel; similarly, the second arc-shaped protrusion can limit the left end of the second arc-shaped brake shoe, preventing it from moving vertically.

[0010] Preferably, an upper sealing slide is provided on the front side of the mounting cavity, and an upper sealing part capable of sealing the upper sealing slide is provided outside the first sliding thrust part; a lower sealing slide is provided on the front side of the mounting cavity, and a lower sealing part capable of sealing the lower sealing slide is provided outside the second sliding thrust part. The provision of the upper sealing slide and the upper sealing part, and the lower sealing slide and the lower sealing part, can improve the sealing performance of the mounting cavity to a certain extent, preventing internal lubricating oil leakage and the entry of external impurities.

[0011] Preferably, the first sliding thrust portion further includes a first inner rolling element located inside the mounting cavity and capable of rotation, the first inner rolling element contacting the push wheel; the second sliding thrust portion further includes a second inner rolling element located inside the mounting cavity and capable of rotation, the second inner rolling element contacting the push wheel. The first inner rolling element and the push wheel form a rolling contact, ensuring that the push wheel can stably push the first inner rolling element to move, further improving the reliability of the entire pushing process; similarly, the second inner rolling element and the push wheel form a rolling contact, ensuring that the push wheel can stably push the second inner rolling element to move, further improving the reliability of the entire pushing process.

[0012] Preferably, a first sealing elastic layer is provided between the front outer wall of the mounting cavity and the outer wall of the first sliding thrust part; a second sealing elastic layer is provided between the rear outer wall of the mounting cavity and the outer wall of the second sliding thrust part. The first sealing elastic layer adds an extra layer of sealing to the outside of the mounting cavity, improving the sealing performance. Simultaneously, the first sealing elastic layer can undergo elastic deformation, thus adapting to the first sliding thrust part during movement and ensuring sealing performance. Similarly, the second sealing elastic layer adds an extra layer of sealing to the outside of the mounting cavity, improving the sealing performance. Simultaneously, the second sealing elastic layer can undergo elastic deformation, thus adapting to the second sliding thrust part during movement and further ensuring sealing performance.

[0013] Preferably, the elastic structure includes multiple tension springs, with both ends of each spring fixed to the first arc-shaped brake shoe and the second arc-shaped brake shoe, respectively. When stretched, the multiple tension springs generate an inward pulling force, ensuring reliable contact between the right ends of the first and second arc-shaped brake shoes and the thrust structure.

[0014] The beneficial effects of this invention are reflected in:

[0015] In this invention, a rotating ring that follows the tire's rotation is provided between the outer sides of the first and second arc-shaped brake shoes and the inner wall of the brake groove. When the pushing structure moves, the first and second arc-shaped brake shoes move towards the inner wall of the brake groove, eventually generating friction with the rotating ring to achieve friction braking. The first and second sliding thrust parts respectively contact the first and second arc-shaped brake shoes via the first and second outer rolling bodies, achieving rolling contact, reducing the contact area, and thus minimizing the impact of external impurities on the contact surface, improving pushing stability. Furthermore, the mounting cavity isolates the pushing wheel, the first sliding thrust part, and part of the second sliding thrust part from the outside, greatly reducing the impact of external impurities on the surface of the frequently moving pushing wheel, reducing instability and vibration. Crucially, lubricating oil can be injected into the mounting cavity, and the sealing of the mounting cavity allows the lubricating oil to fully coat the frequently sliding pushing wheel. The cover prevents leakage of lubricating oil from the mounting cavity, even with relatively high levels, thus improving stability and braking performance, and extending the service life of the entire actuation structure. Furthermore, after a certain period of use, the first and second arc-shaped brake shoes will experience more wear on the side where the friction pads are in full contact, due to the first and second arc-shaped brake shoes rotating before contacting each other. At this point, the user can directly loosen the adjustment mechanism and rotate the adjustment part to increase the distance between the first and second adjustment centers. After adjustment, the adjustment part can be fixed. When braking again, the initial angles of the first and second arc-shaped brake shoes change under the action of the elastic structure, resulting in a wider range of contact angles with the rotating ring. This compensates for the unreliable braking caused by excessive wear. Simultaneously, under the same brake arm swing amplitude before and after wear, similar frictional force is generated, ensuring consistent braking stroke and preventing braking instability and unreliability, thereby guaranteeing a superior user experience. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B;

[0021] Figure 5 For the present invention Figure 4 A schematic diagram of the structure;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the structure after the central adjustment section has rotated;

[0023] Figure 7 This is a schematic diagram of the adjustment structure of the present invention.

[0024] Figure label:

[0025] 1-Brake cover, 11-Brake groove, 2-First arc-shaped brake shoe, 3-Second arc-shaped brake shoe, 4-Adjustment structure, 41-Adjustment part, 411-Adjustment wheel, 412-Adjustment rod, 413-Operating head, 4131-External thread, 414-Nut, 42-First adjustment center, 421-First arc-shaped convex strip, 43-Second adjustment center, 431-Second arc-shaped convex strip, 44-Positioning rail, 5-Elastic structure, 51-Tension spring, 6-Push structure, 61-Mounting cavity 611-Upper sealing slide, 612-Lower sealing slide, 62-Drive rod, 621-Oil injection hole, 63-Push wheel, 631-Arched protrusion, 632-Oil injection channel, 64-First sliding thrust part, 641-First outer roller, 642-Upper sealing part, 643-First inner roller, 65-Second sliding thrust part, 651-Second outer roller, 652-Lower sealing part, 653-Second inner roller, 66-First sealing elastic layer, 67-Second sealing elastic layer, 7-Brake arm. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0030] like Figures 1 to 7As shown, a novel brake pad device includes a brake cover 1. A brake groove 11 is formed on the inner side of the brake cover 1. A first arc-shaped brake shoe 2 and a second arc-shaped brake shoe 3 are disposed within the brake groove 11. An adjustment structure 4 is connected to the left end of the first arc-shaped brake shoe 2 and the left end of the second arc-shaped brake shoe 3. An elastic structure 5 is disposed between the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3. A pushing structure 6 is connected to the right end of the first arc-shaped brake shoe 2 and the right end of the second arc-shaped brake shoe 3. The adjustment structure 4 includes an adjustment part 41, a first adjustment center 42, and a second adjustment center 43. The adjustment part 41 extends out of the brake cover 1 and is used to adjust the positions of the first adjustment center 42 and the second adjustment center 43. The first adjustment center 42 and the second adjustment center 43 are respectively connected to the left end of the first arc-shaped brake shoe 2 and the left end of the second arc-shaped brake shoe 3. The first arc-shaped brake shoe 2 can rotate around the first adjustment center 42, and the second arc-shaped brake shoe 3 can rotate around the second adjustment center 43. The adjustment center 43 rotates, and the pushing structure 6 is used to push the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 to move after the movement. The pushing structure 6 includes a mounting cavity 61 fixed in the brake groove 11. A drive rod 62 passes through the mounting cavity 61. The end of the drive rod 62 is connected to a brake arm 7 located outside the brake cover 1. A push wheel 63 located in the mounting cavity 61 is fixed on the drive rod 62. Two symmetrical arc-shaped protrusions 631 are protruding on the push wheel 63. The front and rear sides of the push wheel 63 respectively contact the first sliding thrust part 64 and the second sliding thrust part 65 extending out of the mounting cavity 61. The first sliding thrust part 64 includes a first outer rolling body 641 located outside the mounting cavity 61 and capable of rotation. The second sliding thrust part 65 includes a second outer rolling body located outside the mounting cavity 61 and capable of rotation. The first outer rolling body 641 contacts the right end of the first arc-shaped brake shoe 2, and the second outer rolling body 651 contacts the right end of the second arc-shaped brake shoe 3.

[0031] In this embodiment, it should be noted that in the entire novel brake pad device, a rotating ring that follows the rotation of the tire is provided between the outer side of the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 and the inner wall of the brake groove 11. When the pushing structure 6 moves, the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 will move towards the inner wall of the brake groove 11, and eventually generate friction with the rotating ring to achieve friction braking. The first sliding thrust part 64 and the second sliding thrust part 65 respectively pass through the first outer roller 641 and the second outer roller 651, and interact with the first arc-shaped brake shoe. 2. The second arc-shaped brake shoe 3 makes contact, thereby achieving rolling contact, reducing the contact area, and thus minimizing the impact of external impurities on the contact surface, improving pushing stability. Furthermore, by utilizing the mounting cavity 61, part of the structure of the push wheel 63, the first sliding thrust part 64, and the second sliding thrust part 65 is isolated from the outside, thereby greatly reducing the impact of external impurities on the surface of the frequently moving push wheel 63, reducing the occurrence of instability and vibration. More importantly, lubricating oil can be injected into the mounting cavity 61, utilizing the mounting cavity 61 The seal allows the lubricating oil to fully cover the frequently sliding push wheel 63, preventing leakage from the mounting cavity 61 even with relatively excessive lubricating oil. This improves stability and braking performance, and extends the service life of the entire push structure 6. Furthermore, after a certain period, due to the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 rotating before contacting each other, the side with the friction pads in full contact will experience more wear. At this time, the user can directly loosen the adjustment structure 4 and rotate the adjustment part 41 of the adjustment structure 4 to increase the distance between the first adjustment center 42 and the second adjustment center 43. After adjustment, the adjustment part 41 is fixed. When braking again, under the action of the elastic structure 5, the initial angle of the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 changes, and the angle range of their contact with the rotating ring is larger. This compensates for the unreliable braking caused by excessive wear. At the same time, under the same swing amplitude of the brake arm 7 before and after wear, similar frictional force can be generated, ensuring that the user's braking stroke is consistent with before, preventing braking instability and unreliability, and thus guaranteeing the user experience.

[0032] Specifically, the drive rod 62 is provided with an oil injection hole 621, which is connected to an oil injection channel 632 that extends through the surface of the arc-shaped protrusion 631.

[0033] In this embodiment, it should be noted that the oil injection hole 621 allows direct connection to oil pipelines or other lubricating oil storage structures, enabling lubricating oil to be injected directly from the outside into the oil injection channel 632. The lubricating oil then passes through the oil injection channel 632 and exits through the surface of the arc-shaped protrusion 631, allowing the lubricating oil to flow directly from the surface of the arc-shaped protrusion 631 of the drive wheel, directly participating in the lubrication of the contact surfaces to be rubbed, thereby improving the lubrication effect. Furthermore, based on the sealing of the mounting cavity 61, excessive leakage of lubricating oil will not be allowed, further ensuring the lubrication effect.

[0034] Specifically, the adjustment structure 4 also includes a locking track 44 fixed to the inner wall of the brake groove 11. The first adjustment center 42 and the second adjustment center 43 are locked in the locking track 44 and can slide along the locking track 44. The adjustment part 41 is located between the first adjustment center 42 and the second adjustment center 43 and passes through the locking track 44.

[0035] In this embodiment, it should be noted that the first adjustment center 42 and the second adjustment center 43 are limited by the locking track 44. During the rotation of the adjustment part 41, it can be ensured that the first adjustment center 42 and the second adjustment center 43 can only slide along the locking track 44 and will not move unexpectedly, so that the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 will not move abnormally.

[0036] Specifically, the adjustment part 41 includes an adjustment wheel 411 located at the first adjustment center 42 and the second adjustment center 43. The adjustment wheel 411 has a first protrusion and a second protrusion that are symmetrical to each other on its side. An adjustment rod 412 is fixed to the bottom of the adjustment wheel 411. The adjustment rod 412 passes through the brake cover 1 and is connected to and fixed to the operating head 413. An external thread 4131 is provided on the adjustment rod 412. At least two nuts 414 that are locked with the external thread 4131 are sleeved on the adjustment rod 412.

[0037] In this embodiment, it should be noted that the first protrusion and the second protrusion of the adjusting wheel 411 are symmetrical to each other. When the adjusting wheel 411 rotates, the first protrusion and the second protrusion push the first adjusting center 42 and the second adjusting center 43 respectively. Under the action of the elastic structure 5, the first adjusting center 42 and the second adjusting center 43 move simultaneously, ensuring that the positions of the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 are symmetrical to each other. The friction plates on the two will contact the rotating ring simultaneously, generating a stable and uniform braking friction force. Furthermore, the adjusting rod 412 extends out of the brake cover 1, so that the operating head 413 is located outside the brake cover 1. When adjustment is required, the user loosens the two nuts 414 in sequence, then rotates the operating head 413. After rotating to a preset angle, the user then tightens the two nuts 414 on the outer wall of the brake cover 1 in sequence, so that the bottom surface of the adjusting wheel 411 fully contacts the inner wall of the brake cover 1. At the same time, the adjusting rod 412 cannot undergo circumferential and axial displacement under the limitation of the external thread 4131, thus forming a reliable fixation.

[0038] Specifically, the first arc-shaped brake shoe 2 includes a first arc-shaped groove at the left end, a first adjustment center 42 in the shape of a semi-cylinder, the arc-shaped side of the first adjustment center 42 in contact with the inner wall of the first arc-shaped groove, and the vertical side of the first adjustment center 42 in contact with the adjustment wheel 411; a first arc-shaped protrusion 421 is provided on the top side of the first adjustment center 42, and the first arc-shaped protrusion 421 is in contact with the top surface of the first arc-shaped brake shoe 2.

[0039] In this embodiment, it should be noted that the first adjustment center 42 is inserted into the first arc-shaped groove. Under the action of the elastic structure 5, the inner wall of the first arc-shaped groove is reliably in contact with the arc-shaped side of the first adjustment center 42, and the vertical side of the first adjustment center 42 is reliably in contact with the adjustment wheel 411. The first arc-shaped protrusion 421 can limit the left end of the first arc-shaped brake shoe 2 to prevent it from moving vertically.

[0040] Specifically, the second arc-shaped brake shoe 3 includes a second arc-shaped groove at the left end, the second adjustment center 43 is semi-cylindrical, the arc-shaped side of the second adjustment center 43 is in contact with the inner wall of the second arc-shaped groove, and the vertical side of the second adjustment center 43 is in contact with the adjustment wheel 411; a second arc-shaped protrusion 431 is provided on the top side of the second adjustment center 43, and the second arc-shaped protrusion 431 is in contact with the top surface of the second arc-shaped brake shoe 3.

[0041] In this embodiment, it should be noted that, similarly, the second adjustment center 43 is inserted into the second arc-shaped groove. Under the action of the elastic structure 5, the inner wall of the second arc-shaped groove is reliably in contact with the arc-shaped side of the second adjustment center 43, and the vertical side of the second adjustment center 43 is reliably in contact with the adjustment wheel 411. Similarly, the second arc-shaped protrusion 431 can limit the left end of the second arc-shaped brake shoe 3 to prevent it from moving vertically.

[0042] Specifically, an upper sealing slide 611 is provided on the front side of the mounting cavity 61, and an upper sealing part 642 capable of sealing the upper sealing slide 611 is provided outside the first sliding thrust part 64; a lower sealing slide 612 is provided on the front side of the mounting cavity 61, and a lower sealing part 652 capable of sealing the lower sealing slide 612 is provided outside the second sliding thrust part 65.

[0043] In this embodiment, it should be noted that the arrangement of the upper sealing slide 611 and the upper sealing part 642, and the lower sealing slide 612 and the lower sealing part 652 can improve the sealing performance of the mounting cavity 61 to a certain extent, and prevent the leakage of internal lubricating oil and the entry of external impurities.

[0044] Specifically, the first sliding thrust part 64 also includes a first inner roller 643 located inside the mounting cavity 61 and capable of rotation, the first inner roller 643 contacting the push wheel 63; the second sliding thrust part 65 also includes a second inner roller 653 located inside the mounting cavity 61 and capable of rotation, the second inner roller 653 contacting the push wheel 63.

[0045] In this embodiment, it should be noted that the first inner rolling body 643 forms a rolling contact with the push wheel 63, ensuring that the push wheel 63 can stably push the first inner rolling body 643 to move, further improving the reliability of the entire pushing process; similarly, the second inner rolling body 653 forms a rolling contact with the push wheel 63, ensuring that the push wheel 63 can stably push the second inner rolling body 653 to move, further improving the reliability of the entire pushing process.

[0046] Specifically, a first sealing elastic layer 66 is provided between the front outer wall of the mounting cavity 61 and the outer wall of the first sliding thrust part 64; a second sealing elastic layer 67 is provided between the rear outer wall of the mounting cavity 61 and the outer wall of the second sliding thrust part 65.

[0047] In this embodiment, it should be noted that the first sealing elastic layer 66 adds a layer of sealing outside the mounting cavity 61, improving the sealing performance. At the same time, the first sealing elastic layer 66 can undergo elastic deformation, so the first sealing elastic layer 66 can adapt to the first sliding thrust part 64 during the movement, ensuring the sealing performance. Similarly, the second sealing elastic layer 67 adds a layer of sealing outside the mounting cavity 61, improving the sealing performance. At the same time, the second sealing elastic layer 67 can undergo elastic deformation, so the second sealing elastic layer 67 can adapt to the second sliding thrust part 65 during the movement, further ensuring the sealing performance.

[0048] Specifically, the elastic structure 5 includes multiple tension springs 51, with both ends of the tension springs 51 fixed to the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3, respectively.

[0049] In this embodiment, it should be noted that the multiple tension springs 51 generate an inward pulling force after being stretched, ensuring the reliability of the contact between the right ends of the first arc-shaped brake shoe 2 and the second arc-shaped brake shoe 3 and the thrust structure.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A novel brake pad device, characterized in that, The system includes a brake cover, the inner side of which has a brake groove. A first arc-shaped brake shoe and a second arc-shaped brake shoe are disposed within the brake groove. An adjustment structure connects the left ends of the first and second arc-shaped brake shoes. An elastic structure is provided between the first and second arc-shaped brake shoes. A pushing structure connects the right ends of the first and second arc-shaped brake shoes. The adjustment structure includes an adjustment part, a first adjustment center, and a second adjustment center. The adjustment part extends out of the brake cover and is used to adjust the positions of the first adjustment center and the second adjustment center. The first adjustment center and the second adjustment center are respectively connected to the left end of the first arc-shaped brake shoe and the left end of the second arc-shaped brake shoe. The first arc-shaped brake shoe can rotate around the first adjustment center, and the second arc-shaped brake shoe can rotate around the second adjustment center. The pushing structure is used to push the first arc-shaped brake shoe and the second arc-shaped brake shoe to move after movement. The pushing structure includes a mounting cavity fixed in the brake groove, a drive rod passing through the mounting cavity, a brake arm fixed to the end of the drive rod located outside the brake cover, a push wheel fixed on the drive rod located inside the mounting cavity, two symmetrical arc-shaped protrusions on the push wheel, a first sliding thrust portion and a second sliding thrust portion extending out of the mounting cavity respectively contacting the front and rear sides of the push wheel, the first sliding thrust portion including a first outer roller body located outside the mounting cavity and capable of rotation, the second sliding thrust portion including a second outer roller body located outside the mounting cavity and capable of rotation, the first outer roller body contacting the right end of the first arc-shaped brake shoe, and the second outer roller body contacting the right end of the second arc-shaped brake shoe; An upper sealing slide is provided on the front side of the mounting cavity, and an upper sealing part capable of sealing the upper sealing slide is provided outside the first sliding thrust part; a lower sealing slide is provided on the front side of the mounting cavity, and a lower sealing part capable of sealing the lower sealing slide is provided outside the second sliding thrust part. The first sliding thrust part further includes a first inner rolling element located inside the mounting cavity and capable of rotation, the first inner rolling element contacting the push wheel; the second sliding thrust part further includes a second inner rolling element located inside the mounting cavity and capable of rotation, the second inner rolling element contacting the push wheel; A first sealing elastic layer is provided between the front outer wall of the mounting cavity and the outer wall of the first sliding thrust part; a second sealing elastic layer is provided between the rear outer wall of the mounting cavity and the outer wall of the second sliding thrust part.

2. The novel brake pad device according to claim 1, characterized in that, The drive rod is provided with an oil injection hole, which is connected to an oil injection channel that extends through the arc-shaped protrusion surface.

3. The novel brake pad device according to claim 1, characterized in that, The adjustment structure also includes a positioning rail fixed to the inner wall of the brake groove. The first adjustment center and the second adjustment center are engaged in the positioning rail and can slide along the positioning rail. The adjustment part is located between the first adjustment center and the second adjustment center and passes through the positioning rail.

4. The novel brake pad device according to claim 1, characterized in that, The adjustment part includes an adjustment wheel located between the first adjustment center and the second adjustment center. The side of the adjustment wheel is provided with a first protrusion and a second protrusion that are symmetrical to each other. An adjustment rod is fixed to the bottom of the adjustment wheel. The adjustment rod passes through the brake cover and is connected to and fixed to an operating head. The adjustment rod is provided with an external thread, and at least two nuts that engage with the external thread are fitted on the adjustment rod.

5. The novel brake pad device according to claim 4, characterized in that, The first arc-shaped brake shoe includes a first arc-shaped groove at the left end, the first adjustment center is semi-cylindrical, the arc-shaped side of the first adjustment center is in contact with the inner wall of the first arc-shaped groove, and the vertical side of the first adjustment center is in contact with the adjustment wheel; a first arc-shaped protrusion is provided on the top side of the first adjustment center, and the first arc-shaped protrusion is in contact with the top surface of the first arc-shaped brake shoe.

6. The novel brake pad device according to claim 4, characterized in that, The second arc-shaped brake shoe includes a second arc-shaped groove at the left end, the second adjustment center is semi-cylindrical, the arc-shaped side of the second adjustment center is in contact with the inner wall of the second arc-shaped groove, and the vertical side of the second adjustment center is in contact with the adjustment wheel; a second arc-shaped protrusion is provided on the top side of the second adjustment center, and the second arc-shaped protrusion is in contact with the top surface of the second arc-shaped brake shoe.

7. The novel brake pad device according to claim 1, characterized in that, The elastic structure includes multiple tension springs, with both ends of the tension springs fixed to the first arc-shaped brake shoe and the second arc-shaped brake shoe, respectively.

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