Disc brake braking compensation structure and stay wire disc brake

Abstract

The invention relates to a brake compensation structure of a disc brake and a stay wire disc brake. The brake compensation structure of the disc brake is matched with a brake caliper body, the brake caliper body is composed of a first caliper body and a second caliper body, a brake cavity with an opening in one side is formed in the middle of the brake caliper body, a brake part is arranged in the brake cavity, and a driving part is arranged in the first caliper body. The first clamp body is rotationally assembled with the upper end of the first clamp body; the brake compensation piece is arranged in the first caliper body and comprises a driven ejector rod, a first brake rod and a second brake rod. A compensation mandrel; a limiting shaft sleeve; an active push rod; and when the traction rotation angle of the pull rod exceeds the preset rotation angle, the brake compensation piece moves downwards to compensate and push the brake piece. Automatic compensation of brake of the stay wire disc brake is achieved, and the optimal brake state of a brake system is maintained.

Description

Technical Field

[0001] The invention relates to the technical field of two-wheel vehicle accessories, and in particular to a disc brake compensation structure and a cable disc brake. Background Art

[0002] There are currently two control transmission methods for disc brakes, namely cable disc brakes and hydraulic disc brakes. Hydraulic disc brakes are more expensive, so they are mostly installed on high-end bicycles or professional racing bikes. Compared with hydraulic disc brakes, cable disc brakes have a simpler structure and lower cost. Limited by the production cost of bicycles, cable disc brakes are still widely installed and used on bicycles.

[0003] After using the disc brake for a period of time, as the brake pads installed on the front / rear wheels of bicycles, scooters or motorcycles wear, the brake pad gap will gradually increase, resulting in a weakened braking effect of the brake system. A significant advantage of hydraulic disc brakes over cable-operated disc brakes is that the brake slider of hydraulic disc brakes will automatically compensate for the wear of the brake pads as the oil pressure decreases, and the brake pad gap remains unchanged; while cable-operated disc brakes require frequent adjustment of the brake pad gap to maintain the best condition of the brake system. Therefore, the market is in urgent need of a cable-operated disc brake that can achieve automatic compensation for brake pad wear. Summary of the invention

[0004] The present application provides a disc brake compensation structure and a cable disc brake to at least solve the problem in the prior art that the brake pads of the cable disc brake wear and the brake pad gap gradually increases, resulting in a weakening of the braking effect of the brake system, while the cable disc brake requires frequent adjustment of the brake pad gap to maintain the brake system in the best state.

[0005] In a first aspect, the present application provides a disc brake compensation structure, which is arranged in conjunction with a brake caliper body, the brake caliper body is composed of a first caliper body and a second caliper body and a brake cavity with one side open is opened in the middle thereof, a brake member is arranged in the brake cavity, a driving member for pushing the brake member to move so as to clamp the brake disc is arranged in the first caliper body, and further comprises:

[0006] A pull rod, a first end of which is connected to the driving end of the driving member and is rotatably assembled with the upper end of the first clamp body;

[0007] A brake compensating member, which is disposed in the first caliper body, comprises:

[0008] A driven push rod, which is arranged in an active cavity opened in the middle of the first clamp body and is rotationally limited with the active cavity, and is arranged on a side of the driven push rod away from the pull rod;

[0009] A compensating mandrel, which axially rotates in a movable cavity opened in the middle of the first caliper body, and whose second end thread penetrates through the middle of the driven push rod and abuts against the brake member;

[0010] A limiting bushing is sleeved on the compensation mandrel and connected to the limiting bushing through a one-way bearing. A positioning key is provided on its outer periphery. The rotatable direction of the one-way bearing is set opposite to the braking traction direction of the pull rod.

[0011] A driving ejector rod is axially and rotatably assembled in the movable cavity. Its first end is fixedly assembled with the first end of the pull rod through a pull rod screw. A keyway groove is provided inside it to accommodate the positioning key with a preset rotation angle limit therein.

[0012] Wherein, when the traction rotation angle of the pull rod exceeds the preset rotation angle, the braking compensation member moves downward to compensate and push the brake member.

[0013] Optionally, the braking compensation member further includes a fastening member, and the fastening member includes:

[0014] A fastening hole is provided on the side wall of the driven ejector rod and communicates with the annular side wall of the compensation mandrel.

[0015] Friction particles are arranged in the fastening hole and abut against the compensation mandrel.

[0016] A fastening screw is threadedly assembled in the fastening hole and pushes the friction particles to contact the annular side wall of the compensation mandrel to impart a rotational frictional force to the compensation mandrel. The rotational frictional force is greater than the forward rotational resistance of the one-way bearing and less than the rotational resistance between the limiting bushing and the one-way bearing.

[0017] Optionally, the driving member includes:

[0018] A number of first water droplet ball tracks are provided on the side of the driven ejector rod facing the driving ejector rod.

[0019] A number of second water droplet ball tracks are provided on the side of the driving ejector rod facing the driven ejector rod and are matched with the first water droplet ball tracks.

[0020] A number of transmission balls are limited to roll in the complete water droplet ball track formed by the combination of the first water droplet ball track and the second water droplet ball track.

[0021] A sealing screw cap is threadedly assembled on the lower edge of the movable cavity.

[0022] An elastic member is sleeved on the compensation mandrel, and its two ends are respectively connected to the driven ejector rod and the sealing screw cap.

[0023] Optionally, a pressing disc is provided at the free end of the second end of the compensation mandrel, and the pressing disc abuts against the brake member.

[0024] There is an annular gap between the sealing screw cap and the compensation mandrel, and the pressing disc is assembled into the annular gap to compress the assembly height.

[0025] Optionally, an assembly step is formed on the annular side wall of the active ejector rod, and a plain bearing with moving surfaces respectively contacting the assembly step and the inner wall surface of the moving cavity is sleeved on the assembly step.

[0026] Optionally, the pull rod screw is of a hollow structure and is coaxially arranged with the compensation mandrel. Wherein, an adjusting screw thread is provided at the free end of the first end of the compensation mandrel.

[0027] Optionally, the braking member includes:

[0028] Brake pad back plates, two in number, symmetrically arranged in the vertical grooves formed in the braking cavity to limit their rotation, and the two brake pad back plates are respectively connected to the second end of the compensation mandrel and the second caliper body through strong magnets;

[0029] Brake pads, two in number, symmetrically arranged on the opposite sides of the two brake pad back plates to clamp and brake the brake disc assembled between the two brake pads;

[0030] Guide pin, inserted and assembled on the two brake pad back plates and fixed on the brake caliper body to position the two brake pad back plates in the braking cavity.

[0031] Optionally, an adjusting hole is provided in the middle of the second caliper body, and an adjusting screw cap for adjusting the lifting of one of the brake pads is threadedly assembled in the adjusting hole.

[0032] In a second aspect, the present application provides a cable-operated disc brake, which includes the disc brake braking compensation structure proposed in the first aspect above.

[0033] Optionally, a wire pressing plate and a guiding portion are provided at the second end of the pull rod. The wire pressing plate is assembled at the second end of the pull rod through a wire pressing screw to fix the first end of the cable. The second end of the cable changes the routing direction through the guiding portion and passes through a wire threading pin and is connected to the brake lever. The wire threading pin is assembled on the base formed outside the first caliper body.

[0034] Further optionally, an assembly wing for assembling the brake caliper body on a two-wheeled vehicle through a bolt member is integrally formed on the first caliper body.

[0035] Compared with the related art, the disc brake braking compensation structure and the cable-operated disc brake provided by the present application at least have the following technical effects:

[0036] Through the setting of the brake compensation part, when the brake pad is worn and the gap between the brake pads increases, the displacement of the driving part pushing the brake part is not enough for braking, and the brake compensation part moves downward to extend the overall length of the driving part in disguise, thereby compensating for the braking of the brake disc by the brake part, and after a single compensation is completed, the downward position of the brake compensation part remains unchanged to maintain the compensatory braking effect. In this way, the optimal braking state of the brake system is optimized and maintained.

[0037] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a three-dimensional structural diagram of a cable disc brake with a disc brake compensation structure according to an exemplary embodiment.

[0040] Figure 2 The figure is an exploded view of a cable disc brake structure with a disc brake compensation structure according to an exemplary embodiment.

[0041] Figure 3 is a cross-sectional view of a cable disc brake structure having a disc brake compensation structure according to an exemplary embodiment.

[0042] Figure 4 It is a schematic diagram of a partial structure of a brake compensation component according to an exemplary embodiment.

[0043] Figure 5 The diagram is a schematic diagram of the operation of a cable-operated disc brake with a disc brake compensation structure according to an exemplary embodiment.

[0044] Figure 6 It is one of the schematic diagrams of the action of the disc brake compensation structure shown according to an exemplary embodiment.

[0045] Figure 7 This is the second schematic diagram of the disc brake compensation structure action according to an exemplary embodiment.

[0046] Description of reference numerals: brake caliper body 10; first caliper body 101; second caliper body 102; caliper body bolt 103; adjusting screw cap 104; locking pin 1041; assembly wing 105; base 106;

[0047] Tie rod 20; Pressing plate 201; Pressing screw 202; Guiding part 203;

[0048] Braking compensator 30; Driven ejector rod 301; Compensation mandrel 302; Limit bushing 303; Positioning key 3031; One-way bearing 304; Driving ejector rod 305; Keyway groove 3051; Set screw 306; Pressing disc 307;

[0049] Driving part 40; First water droplet raceway 401; Second water droplet raceway 402; Transmission ball 403; Plain bearing 404; Bearing gasket 405; Elastic part 406; Sealing cap 407;

[0050] Braking part 50; Brake pad back plate 501; Brake pad 502; Guide pin 503; Strong magnet 504; Threaded pin 60. Detailed implementation manner

[0051] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0054] In the related art, after a disc brake has been used for a period of time, as the brake pads assembled at the front / rear wheels of a bicycle, scooter or motorcycle wear out, the gap between the brake pads will gradually increase, resulting in a weakened braking effect of the braking system. A significant advantage of an oil pressure disc brake compared to a cable-operated disc brake is that the brake piston of the oil pressure disc brake will automatically compensate for the wear of the brake pads as it descends with the oil pressure, and the gap between the brake pads remains unchanged; while for a cable-operated disc brake, the gap between the brake pads needs to be frequently adjusted to maintain the optimal state of the braking system.

[0055] Based on the above situation, the embodiments of the present invention provide a disc brake braking compensation structure and a cable-operated disc brake, which will be elaborated in detail below in combination with specific embodiments and drawings.

[0056] Embodiment 1

[0057] Embodiment 1 of the present invention provides a disc brake braking compensation structure Figure 1 is a three-dimensional structural diagram of a cable-operated disc brake with a disc brake braking compensation structure shown according to an exemplary embodiment. Figure 2 is an exploded view of the structure of a cable-operated disc brake with a disc brake braking compensation structure shown according to an exemplary embodiment. As Figure 1-2 shown, this disc brake braking compensation structure is arranged in cooperation with a brake caliper body 10. The brake caliper body 10 is composed of a first caliper body 101 and a second caliper body 102, and a braking cavity with an open side is provided in the middle thereof. A braking member 50 is arranged in the braking cavity. A driving member 40 for pushing the braking member 50 to displace for clamping the brake disc is arranged in the first caliper body 10. Specifically, the first caliper body 101 and the second caliper body 102 are fixed by a plurality of caliper bolts 103;

[0058] Continuing to refer to the attached Figure 1-2 , the disc brake braking compensation structure further includes:

[0059] A pull rod 20, the first end of which is rotatably assembled with the upper end of the first caliper body 101 and is connected to the driving end of the driving member 40; wherein, Figure 5 is a schematic diagram of the operation of a cable-operated disc brake with a disc brake braking compensation structure shown according to an exemplary embodiment. Referring to the attached Figure 2 and the attached Figure 5 , a wire pressing plate 201 and a guiding portion 203 are provided at the second end of the pull rod 20. The wire pressing plate 201 is assembled at the second end of the pull rod 20 through a wire pressing screw 202 to fix the first end of the cable. The second end of the cable changes the routing direction through the guiding portion 203 and passes through a wire threading pin 60 and is connected to the brake lever. The wire threading pin 60 is assembled on a base 106 formed outside the first caliper body 101;

[0060] A braking compensation member 30, which is arranged in the first caliper body 10 and is used to compensate for pushing the braking member 50 to clamp and brake the brake disc when the driving member 40 pushing the braking member 50 to displace is not sufficient for braking; in this embodiment,Figure 3 It is a cross-sectional view of a wire disc brake structure with a disc brake compensation structure shown according to an exemplary embodiment. Figure 4 It is a schematic diagram of a partial structure of a brake compensation member shown according to an exemplary embodiment.

[0061] Specifically, referring to the appendix Figure 1-4 , the brake compensation member 30 includes:

[0062] The brake compensation member 30, which is disposed in the first caliper 10, includes:

[0063] The driven ejector rod 301, which is disposed in the movable cavity opened in the middle of the first caliper 101 and is rotationally limited with the movable cavity. Specifically, several disc wing portions 3011 are formed on the edge of the driven ejector rod 301, and the disc wing portions 3011 are clamped and fixed in the wing portion slots opened on the inner wall of the movable cavity for rotational limitation and axial sliding, and it is disposed on the side of the driven ejector rod 301 facing away from the pull rod 20;

[0064] The compensation mandrel 302, which rotates axially in the movable cavity opened in the middle of the first caliper 101, and its second end threadedly penetrates through the middle of the driven ejector rod 301 and abuts against the brake member 50;

[0065] The limiting bushing 303, which is sleeved on the compensation mandrel 302 and is connected to the limiting bushing 303 through a one-way bearing 304, and a positioning key 3031 is provided on its outer periphery. The rotatable direction of the one-way bearing 304 is set opposite to the braking traction direction of the pull rod 20;

[0066] The driving ejector rod 305, which is axially rotatably assembled in the movable cavity, its first end is fixedly assembled with the first end of the pull rod 20 through a pull rod screw 307, and a keyway groove 3051 for accommodating the positioning key 3031 and having a preset rotation angle b limitation is opened inside it;

[0067] Among them, when the traction rotation angle of the pull rod 20 exceeds the preset rotation angle b, the brake compensation member 30 moves downward to compensate and push the brake member 50;

[0068] Continuing to refer to the appendix Figure 1-4 , the driving member 40 includes: The driving member 40 includes:

[0069] The first water droplet ball track 401, with a plurality of numbers, is opened on the side of the driven ejector rod 301 facing the driving ejector rod 305;

[0070] The second water droplet ball track 402, with a plurality of numbers, is opened on the side of the driving ejector rod 305 facing the driven ejector rod 301 and is matched with the first water droplet ball track 401;

[0071] The driving balls 403, with a number of them, are limited to roll within the complete water-drop ball track formed by the combination of the first water-drop ball track 401 and the second water-drop ball track 402;

[0072] The sealing screw cap 407 is threadedly assembled to the lower edge of the movable cavity;

[0073] The elastic member 406 is sleeved on the compensation mandrel 302, and its two ends are respectively connected to the driven ejector rod 301 and the sealing screw cap 407; in this embodiment, the elastic member 406 is a compression spring;

[0074] The braking member 50 includes: The braking member 50 includes:

[0075] The brake pad back plates 501, with two in number, are symmetrically arranged in the vertical grooves formed in the braking cavity to limit their rotation, and the two brake pad back plates 501 are respectively connected to the second end of the compensation mandrel 302 and the second clamp body 102 through strong magnets 504;

[0076] The brake pads 502, with two in number, are symmetrically arranged on the opposite sides of the two brake pad back plates 501 to clamp and brake the brake disc assembled between the two brake pads 502;

[0077] The guide pin 503 is inserted and assembled to the two brake pad back plates 501 and fixed on the brake caliper body 10 to position the two brake pad back plates 501 in the braking cavity without interfering with the movement of the pull rod 20.

[0078] In the technical solution of the above embodiment, Figure 6 is one of the schematic diagrams showing the operation of the disc brake compensation structure according to an exemplary embodiment. Figure 7 is the second of the schematic diagrams showing the operation of the disc brake compensation structure according to an exemplary embodiment. With reference to Figure 5-7 as the reference standard, in the normal state, when the brake pads are not worn or slightly worn, and the pull rod 20 is rotated forward by the traction of the wire, the active ejector rod 305 is rotated forward and braked in the movable cavity under the traction of the pull rod 20 (refer to Figure 5-7 , rotate counterclockwise), driving the driving balls 403 to roll in the second water-drop ball track 402. The positions of the active ejector rod 305 and the driving balls 403 change, and the rolling of the driving balls 403 also causes a position change along the second water-drop ball track 402. Combining the two, the driven ejector rod 301 and the compensation mandrel 302 are both displaced downward, pushing the braking member 50 to brake the brake disc; when the force application ends, the vertical compression restoring force of the elastic member 406 pushes the driven ejector rod 301 to reverse and reset upward, and the reverse rolling of the driving balls 403 drives the active ejector rod 305 and the pull rod 20 to reset at the same time, ensuring the stable drive of the driving member 40 and the pull rod 20; in this state, as long as the rotation angle of the traction of the pull rod 20 does not exceed the preset rotation angle b of the positioning key 3031 in the keyway 3051, effective braking can be completed;

[0079] It can be understood that the clamping force between the limiting sleeve 303 and the one-way bearing 304 is smaller than the reverse resistance of the one-way bearing 304. When the counterclockwise rotation angle of the active push rod 305 exceeds the preset rotation angle b, the active push rod 305 drives the limiting sleeve 303 to rotate counterclockwise, the one-way bearing 304 and the compensation spindle 302 are reversely locked, the limiting sleeve 303 drives the one-way bearing 304 and the compensation spindle 302 to rotate counterclockwise synchronously, and the compensation spindle 302 and the driven push rod 301 generate downward thread transmission;

[0080] During reset, when the reverse rotation angle of the active push rod 305 exceeds the preset rotation angle b, the active push rod 305 drives the limiting sleeve 303 to reverse, and the limiting sleeve 303 drives the one-way bearing 304 to reverse, and there is no resistance between the one-way bearing 304 and the compensation spindle 302. At this time, the limiting sleeve 303 only drives the one-way bearing 304 to idle, and no thread transmission is generated between the compensation spindle 302 and the driven push rod 301;

[0081] Specifically, as the number of braking times increases, when the brake pad 502 has been worn, the brake pad gap increases, and each time the brake is applied, the torque held by the brake handle increases, further increasing the positive rotation angle of the traction rod 20, and the positive rotation angle of the active push rod 305 in the active cavity due to the traction of the traction rod 20 also increases accordingly (see attached Figure 5-7 , counterclockwise rotation), at this time, the positive rotation angle of the active push rod 305 exceeds the preset rotation angle b of the key slot 3051 and the positioning key 3031, the key slot 3051 rotates from one side to the other side, and the groove edge on the other side drives the positioning key 3031 and the limiting shaft sleeve 303 to rotate in the same direction with the active push rod 305, due to the unidirectional transmission restriction of the limiting shaft sleeve 303 and the compensation mandrel 302, the compensation mandrel 302 is driven to rotate counterclockwise. The threaded connection of the push rod 301, under the restriction of the thread, the compensation spindle 302 will press down for compensation when it rotates counterclockwise, which is equivalent to extending the length of the driven push rod 301 in disguise, and one of the brake pad back plates 501 on the upper side is adsorbed on the lower end of the compensation spindle 302 through the strong magnet 504, and is limited by the rotation limit of the vertical slot body and the guide pin 503, so that the brake pad 502 on the upper side is further moved downward, completing the compensation for the wear of the brake pad 502 and maintaining the braking effect;

[0082] Further, in this embodiment, after braking is completed and the brake lever is released, the vertical compression restoring force of the elastic member 406 pushes the driven ejector rod 301 to reverse and reset upward. The transmission ball 403 rolls in the reverse direction to drive the simultaneous reset of the driving ejector rod 305 and the pull rod 20. During the reset process, as the driving ejector rod 305 reverses, the keyway 3051 also resets and abuts against the positioning key 3031. At this time, the rotation of the one-way bearing 304 is not restricted. The part of the reverse rotation angle that exceeds the preset rotation angle b only drives the one-way bearing 304 to rotate and does not drive the reverse thread of the compensation mandrel 302 to reset. Instead, the compensation mandrel 302 remains in the compensation position, ensuring the stable drive of the driving member 40 to the braking member 50 subsequently, and thus ensuring the effect of automatically compensating for the wear of the brake pads in the cable-operated disc brake and maintaining the optimal braking state of the braking system.

[0083] Continue to refer to the attached Figure 2 and the attached Figure 4 In this embodiment, a pressing disk 307 is provided at the free end of the second end of the compensation mandrel 302, and the pressing disk 307 abuts against the braking member 50. The pressing disk 307 effectively increases the pushing contact area and maintains the braking balance. There is an annular gap between the sealing cap 407 and the compensation mandrel 302, and the pressing disk 307 is assembled into the annular gap to compress the assembly height, thereby effectively compressing the overall height of the cable-operated disc brake, reducing the volume of the disc brake, and facilitating assembly.

[0084] Continue to refer to the attached Figure 2-3 In this embodiment, an assembly step is formed on the annular side wall of the driving ejector rod 305, and a plain bearing 404 with moving surfaces respectively contacting the assembly step and the inner wall surface of the moving cavity is sleeved on the assembly step to reduce the rotational friction. Further, a bearing gasket 405 is also provided between the plain bearing 404 and the inner wall of the moving cavity to prevent damage to the inner wall of the moving cavity, and the bearing gasket 405 can be replaced during subsequent maintenance.

[0085] Continue to refer to the attached Figure 2 and 3 In this embodiment, the braking compensation member 30 further includes a set screw 306, and the set screw 306 includes: a set hole, which is opened on the side wall of the driven ejector rod 301 and communicates with the annular side wall of the compensation mandrel 302. In this embodiment, it can also be considered that the set hole extends through to the side wall of the first caliper body 101 to facilitate assembly and subsequent adjustment; friction particles, which are arranged in the set hole and abut against the compensation mandrel 302; a set screw, which is threadedly assembled in the set hole and pushes the friction particles to contact the annular side wall of the compensation mandrel 302 to impart a rotational frictional force to the compensation mandrel 302. The rotational frictional force is greater than the forward rotational resistance of the one-way bearing 304 and less than the rotational resistance between the limiting bushing 303 and the one-way bearing 304.

[0086] In this embodiment, the set screw pre-compresses the plastic particles so that the compensation mandrel 302 and the fastener 306 generate a preset friction force F, and the magnitude of the preset friction force F is set to be greater than the forward rotation resistance F1 of the one-way bearing 304 and less than the rotation resistance F2 between the limiting sleeve 303 and the one-way bearing 304; at this time, when the active push rod 305 is braked in the forward rotation (refer to the attached Figure 5-7 , counterclockwise), the limiting sleeve 303 drives the one-way bearing 304 and the compensation mandrel 302 to rotate, and when the active push rod 305 reverses (refer to the attached Figure 5-7 , rotate clockwise), the limiting sleeve 303 drives the one-way bearing 304 to rotate idly around the compensation core shaft 302.

[0087] The pull rod screw 307 is a hollow structure and is coaxially arranged with the compensation mandrel 302, wherein an adjusting screw hole is provided on the free end of the first end of the compensation mandrel 302. In this embodiment, the adjusting screw hole is a hexagonal screw hole;

[0088] In the technical solution of the above embodiment, the attached Figure 5 For reference purposes, this setting can realize manual adjustment of the brake compensation component 30. As mentioned above, the clamping force between the limit sleeve 303 and the one-way bearing 304 is smaller than the reverse resistance of the one-way bearing 304. Therefore, during manual adjustment, the hollow pull rod screw 307 is inserted into the hexagonal wrench to connect the adjusting screw. When rotating downward, the compensation spindle 302 can press down the upper brake pad 502. At this time, the compensation spindle 302 rotates idly in the one-way bearing 304; when rotating upward, the compensation spindle 302 drives the one-way bearing 304 to slip and rotate idly in the limit sleeve 303.

[0089] In summary, the disc brake compensation structure provided by the embodiment of the present invention, through the arrangement of the brake compensation part 30, when the brake pad 502 is worn and the brake pad gap increases, the displacement of the driving part 40 pushing the brake part 50 is not enough for braking, and the brake compensation part 30 moves downward to extend the overall length of the driving part 40 in disguised form, thereby compensating for the braking of the brake disc by the brake part 50, and after a single compensation is completed, the downward position of the brake compensation part 30 remains unchanged to maintain the compensatory braking effect. In this way, the optimal braking state of the brake system is optimized and maintained.

[0090] Example 2

[0091] Embodiment 2 of the present invention provides a cable-operated disc brake, which includes the disc brake compensation structure proposed in the first aspect above; an adjustment hole is opened in the middle of the second caliper body 102, and an adjusting screw cover 104 for adjusting the lifting and lowering of the lower brake pad 502 is installed in the inner thread of the adjustment hole. The adjusting screw cover 104 can be adjusted to lift and lower through the thread, thereby controlling the distance between the lower half of the brake member 50 and the brake disc. It can be understood that the adjusting screw cover 104 can be adjusted quickly alone, and can also cooperate with the driving member 40 to achieve the overall braking torque adjustment of the cable-operated disc brake. Furthermore, the side of the adjusting screw cover 104 is equipped with a locking pin 1041 that is horizontally threadedly assembled with the second caliper body 102. In this embodiment, the locking pin 1041 has the same structure as the fastener 306. The locking pin 1041 is threadedly assembled in the locking hole opened on the side of the second caliper body 102 and pushes against the annular side wall of the friction particle-closed adjusting screw cover 104 to fix the axial position of the adjusting screw cover 104, thereby ensuring that the position of the lower half of the brake member 50 after adjustment is fixed.

[0092] Further optionally, an assembly wing 105 for assembling the brake caliper body 10 on a two-wheeled vehicle by means of bolts is integrally formed on the first caliper body 101 .

[0093] For other structures not described, refer to Example 1.

[0094] In summary, the disc brake compensation structure and cable disc brake provided by the embodiments of the present invention, through the arrangement of the brake compensation component 30, when the brake pad 502 is worn and the brake pad gap increases, the displacement of the driving component 40 pushing the brake component 50 is insufficient for braking, and the brake compensation component 30 moves downward to extend the overall length of the driving component 40 in disguised form, thereby compensating for the braking of the brake disc by the brake component 50, and after a single compensation is completed, the brake compensation component 30 moves downward to an unchanged position to maintain the compensatory braking effect, thereby optimizing and maintaining the optimal braking state of the brake system.

[0095] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A disc brake compensation structure, which is arranged in conjunction with a brake caliper body, the brake caliper body is composed of a first caliper body and a second caliper body and has a brake cavity with one side open in the middle, and a brake member is arranged in the brake cavity, characterized in that: The first caliper body is provided with a driving member for pushing the brake member to move so as to clamp the brake disc, and further includes: A pull rod, a first end of which is connected to the driving end of the driving member and is rotatably assembled with the upper end of the first clamp body; A brake compensating member, which is disposed in the first caliper body, comprises: A driven push rod, which is arranged in an active cavity opened in the middle of the first clamp body and is rotationally limited with the active cavity, and is arranged on a side of the driven push rod away from the pull rod; A compensating mandrel, which axially rotates in a movable cavity opened in the middle of the first caliper body, and whose second end thread penetrates through the middle of the driven push rod and abuts against the brake member; A limiting sleeve, which is sleeved on the compensation mandrel and connected to the limiting sleeve through a one-way bearing, and has a positioning key on its outer periphery, and the rotatable direction of the one-way bearing is set in the opposite direction to the braking traction direction of the pull rod; An active push rod is axially rotatably assembled in the movable cavity, a first end of which is fixedly assembled with the first end of the pull rod by a pull rod screw, and a key slot for accommodating the positioning key with a preset rotation angle limit is provided inside the active push rod; Wherein, when the pulling rotation angle of the pull rod exceeds the preset rotation angle, the braking compensation component moves downward to compensate and push the braking component.

2. The disc brake compensation structure according to claim 1, characterized in that: The brake compensating member also includes a fixing member, and the fixing member includes: A fixing hole, which is opened on the side wall of the driven ejector rod and connected to the annular side wall of the compensating mandrel; Friction particles, which are disposed in the fixing hole and abut against the compensating mandrel; A set screw, whose thread is assembled in the set hole and pushes the friction particles to contact the annular side wall of the compensation core shaft, so as to give the compensation core shaft a rotational friction force, wherein the rotational friction force is greater than the forward rotational resistance of the one-way bearing and less than the rotational resistance between the limit sleeve and the one-way bearing.

3. The disc brake compensation structure according to claim 1, characterized in that: The driving member comprises: There are a plurality of first water drop ball lanes, which are opened on a side of the driven push rod facing the active push rod; There are a plurality of second water drop ball lanes, which are arranged on a side of the active ejector rod facing the driven ejector rod and match and correspond to the first water drop ball lanes; There are a plurality of transmission balls, and the rolling limit of the transmission balls is located in a complete water drop ball track formed by the combination of the first water drop ball track and the second water drop ball track; A sealing screw cap, the thread of which is assembled on the lower edge of the movable cavity; The elastic member is sleeved on the compensation core shaft, and the two ends of the elastic member are respectively connected to the driven ejector rod and the sealing screw cover.

4. The disc brake compensation structure according to claim 3, characterized in that: A pressure plate is disposed at the free end of the second end of the compensation mandrel, and the pressure plate abuts against the brake member; An annular gap is provided between the sealing screw cap and the compensating mandrel, and the top pressure plate is assembled into the annular gap to compress the assembly height.

5. The disc brake compensation structure according to claim 2, characterized in that: An assembly step is formed on the annular side wall of the active ejector rod, and a plane bearing whose movable surface contacts the assembly step and the inner wall of the movable cavity respectively is sleeved on the assembly step.

6. The disc brake compensation structure according to claim 1, characterized in that: The pull rod screw is a hollow structure and is coaxially arranged with the compensation core shaft, wherein an adjusting screw hole is provided on the free end of the first end of the compensation core shaft.

7. The disc brake compensation structure according to claim 1, characterized in that: The brake member comprises: There are two brake pad back plates, which are symmetrically arranged in the vertical slot body opened in the brake cavity to limit its rotation, and the two brake pad back plates are respectively connected to the second end of the compensation core shaft and the second caliper body through strong magnets; Brake pads, two in number, symmetrically arranged on opposite sides of the two brake pad back plates to clamp and brake the brake disc assembled between the two brake pads; A guide pin is inserted and assembled with the two brake pad back plates and fixed on the brake caliper body to position the two brake pad back plates in the brake cavity.

8. The disc brake compensation structure according to claim 7, characterized in that: An adjustment hole is provided in the middle of the second caliper body, and an adjustment screw cover for adjusting the lifting of one of the brake pads is installed in the inner thread of the adjustment hole.

9. A cable-operated disc brake, characterized in that: It includes the disc brake compensation structure described in any one of claims 1 to 8.

10. The cable-operated disc brake according to claim 9, characterized in that: The second end of the pull rod is provided with a wire pressing plate and a guide portion. The wire pressing plate is assembled to the second end of the pull rod through a wire pressing screw to fix the first end of the pull wire. The second end of the pull wire changes its routing direction through the guide portion and passes through a threading pin and is connected to the brake handle. The threading pin is assembled on a base formed on the outside of the first caliper body.

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