Brake device

Abstract

The utility model discloses a brake device which comprises a magnet yoke structure, a release handle, a clutch plate, a brake pad and a fixing plate, the magnet yoke structure is telescopically connected with a release shaft in the front-back direction, and an extrusion head is arranged at the front end of the release shaft. The extrusion head is concavely provided with a first operation groove backwards from the front side face in the axial direction of the release shaft, the first operation groove is used for an external operation piece to apply force to the extrusion head to rotate around the axis of the release shaft, and operation channels are formed in the clutch plate, the fixing plate and the brake pad in the axial direction in a penetrating mode; a screw shaft is telescopically connected to the release handle in the front-back direction, a threaded channel is formed in the release shaft from the rear end face to the front in a concave mode, the screw shaft is in threaded connection with the threaded channel, and a limiting head is arranged at the rear end of the screw shaft. The limiting head is concavely provided with a second operation groove forwards from the rear side face in the axial direction of the screw shaft, and the second operation groove is used for an external operation piece to apply force to enable the limiting head to rotate around the axis of the release shaft. According to the brake device, the release shaft can be disassembled, assembly and disassembly are convenient, and later maintenance or replacement is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake device field especially relates to a brake device. BACKGROUND

[0002] Brake device is a kind of device that utilizes electromagnetic effect to prevent the operation of vehicle operating component, and the release shaft is moved to release the resistance torque exerted on brake pad by clutch plate to realize release, and the release shaft is moved to the opposite direction by the elastic force of spring to realize brake by the clutch plate pressing brake pad. Brake device is used for a long time, and the release shaft is easily worn in the brake process and the clutch plate, which affects the reliability of brake, and even causes brake failure and other serious consequences. The release shaft of brake device on the market is usually fixed on the magnetic yoke structure, which is not convenient to replace the release shaft, and brings inconvenience to people. SUMMARY

[0003] The utility model discloses in view of the prior art's insufficient, provide a kind of brake device, can detachable release shaft, and assembly, it is convenient to detach, it is convenient to maintain or replace later period.

[0004] The technical scheme adopted by the utility model is as follows: a kind of brake device, including magnetic yoke structure, release handle being arranged in the rear side of magnetic yoke structure, and clutch plate, brake pad and fixed plate being arranged in the front side of magnetic yoke structure in sequence, wherein: the fixed plate is connected with magnetic yoke structure between several equal-height columns, clutch plate and brake pad are movably arranged between magnetic yoke structure and fixed plate, and the movable passage of clutch plate is provided on the equal-height column outside, the magnetic yoke structure is connected with release shaft in front-rear direction, the front end of release shaft is provided with extrusion head for pressing clutch plate and moving towards fixed plate, the outer circumferential side of extrusion head is projected from the outer circumferential side of release shaft, the elastic member of release shaft is provided with support between the rear side of extrusion head and the front side of magnetic yoke structure, the first operation slot for external operating member to exert force extrusion head and rotate around the axis of release shaft is recessed from the front side along the axial direction of release shaft, the operating channel for external operating member to extend into first operation slot is provided in the axial direction on the clutch plate, fixed plate and brake pad respectively;Screw shaft is connected with screw thread channel in screw thread in the rear end of release shaft, the rear end of screw shaft is provided with limit head, the second operation slot for external operating member to exert force limit head and rotate around the axis of release shaft is recessed from the rear side along the axial direction of screw shaft.

[0005] Preferably, the first operation slot is provided as a polygonal structure, and / or the second operation slot is provided as a polygonal structure.

[0006] Preferably, the releasing shaft and the extruding head are provided with a mounting channel along the axial direction of the releasing shaft, and the inner wall of the threaded channel and the inner wall of the first operating groove are respectively arranged along the inner wall of the mounting channel.

[0007] Preferably, the magnetic yoke structure is provided with a first telescopic channel along the front-rear direction, and the magnetic yoke structure is concavely provided with a moving channel for telescopic movement of the extruding head from the front end to the rear end, and the releasing shaft is telescopically connected in the first telescopic channel, and the elastic member is supported between the rear side of the extruding head and the end wall of the moving channel; the releasing handle is provided with a second telescopic channel corresponding to the first telescopic channel along the front-rear direction, and the screw shaft is telescopically connected in the second telescopic channel.

[0008] Preferably, the brake pad is concavely provided with a sunken channel from the front side along the axial direction of the brake pad, and the front side wall of the brake pad is provided with a plurality of first sunken grooves along the circumferential direction of the sunken channel, and the first sunken grooves are concavely formed from the front side of the brake pad to the rear, and the inner end of the first sunken groove is communicated with the first sunken channel, and the outer end is provided through the circumferential wall of the brake pad.

[0009] Preferably, the first sunken groove comprises a first sunken section, a second sunken section and a third sunken section communicated between the first sunken section and the second sunken section, the first sunken section and the second sunken section are arranged along the radial direction of the brake pad, and the first sunken section and the second sunken section are arranged along the same straight line, the third sunken section comprises a first intermediate section communicated with the first sunken section and the second sunken section at both ends, and a first lateral section arranged on both sides of the first intermediate section, and the both ends of the first lateral section are communicated with the first sunken section and the second sunken section respectively.

[0010] Preferably, the first intermediate section is arranged on the same straight line with the first sunken section and the second sunken section, the first lateral section comprises a first straight section arranged at an angle with the first intermediate section and communicated with the first sunken section, and a first arc section with the arc center towards the first intermediate section and communicated with the first straight section and the second sunken section at both ends; and / or,

[0011] The rear side wall of the brake pad is provided with a plurality of second sinking grooves along the circumferential direction of the operation channel on the brake pad, the second sinking grooves are recessed from the rear side of the brake pad to the front, the inner end of the second sinking grooves is arranged at intervals with the operation channel on the brake pad, and the outer end of the second sinking grooves is arranged through the circumferential wall of the brake pad, the second sinking grooves comprise a fourth sinking section, a fifth sinking section and a sixth sinking section communicated between the fourth sinking section and the fifth sinking section, the fourth sinking section and the fifth sinking section are arranged along the radial direction of the brake pad, and the fourth sinking section and the fifth sinking section are arranged along the same straight line, the sixth sinking section comprises a second intermediate section communicated with the fourth sinking section and the fifth sinking section at two ends respectively, and a second lateral section arranged on both sides of the second intermediate section respectively, the two ends of the second lateral section are communicated with the fourth sinking section and the fifth sinking section respectively, the second intermediate section is arranged on the same straight line with the fourth sinking section and the fifth sinking section, and the second lateral section comprises a second straight section arranged at an angle with the second intermediate section and communicated with the fourth sinking section, and a second arc section with the arc center towards the second intermediate section and communicated with the second straight section and the fifth sinking section at two ends respectively.

[0012] Preferably, the positioning member arranged between the release handle and the limiting head is further provided with a third telescopic channel arranged through the positioning member along the front-rear direction, the screw shaft is telescopically connected in the third telescopic channel, the positioning member is recessed from the rear side thereof to the front and provided with a movement channel communicated with the third telescopic channel and used for the movement of the limiting head in the movement channel, the movement channel is provided as a conical annular surface, and the inner diameter of the movement channel gradually decreases from the rear to the front, and the front side of the limiting head is provided with a conical annular surface matched with the movement channel.

[0013] Preferably, the positioning member is recessed from the front side thereof to the rear and provided with an annular groove arranged at intervals outside the third telescopic channel, the annular groove is arranged with a conical ring gasket supported between the rear side of the release handle and the end surface of the annular groove, and the inner diameter of the conical ring gasket gradually decreases from the front to the rear.

[0014] Preferably, the free-aligning coupling further comprises a main body and an elastic structure, the main body is arranged as a column structure, the operation channel on the brake pad is arranged as a shape matched with the main body, the column structure has two first end walls and a plurality of first side walls arranged between the two first end walls along different planes, at least one of the first side walls is provided with an elastic base arranged along an axial direction of the main body, the elastic base comprises a mounting seat and a movable slot arranged at a side of the mounting seat along a circumferential direction of the main body, a positioning hole is arranged in the middle of the main body along an axial direction of the main body and is used for positioning connection with an external positioning shaft, the elastic structure comprises a connecting piece positioned on the mounting seat and an elastic piece extending from a side of the connecting piece towards the movable slot and used for abutting against an inner side wall of the operation channel on the brake pad, the elastic piece can be elastically deformed towards the movable slot under the abutting of the inner side wall of the operation channel on the brake pad and can provide an elastic force for moving the inner side wall of the operation channel on the brake pad away from the movable slot.

[0015] The brake device has the advantages that the axial movement range of the release shaft relative to the magnetic yoke structure is limited by the extrusion head at the front end of the release shaft and the limiting head at the rear end of the screw shaft, and the screw shaft is threadedly connected with the threaded channel on the release shaft, so that the screw shaft can be detached from the release shaft by rotating the screw shaft relative to the release shaft to release the limiting of the limiting head on the axial movement of the release shaft, and the release shaft can be detached from the magnetic yoke structure, which facilitates the later maintenance or replacement.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by those skilled in the art from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. In the drawings:

[0018] Figure 1 FIG. 1 is a structural schematic view of a brake device according to an embodiment of the present application.

[0019] Figure 2It is a section view structural schematic drawing of the brake device of one embodiment of the utility model.

[0020] Figure 3 It is an exploded structural schematic drawing of the brake device of one embodiment of the utility model.

[0021] Figure 4 It is a partial exploded structural schematic drawing of the brake device of one embodiment of the utility model Figure 1 .

[0022] Figure 5 It is a partial exploded structural schematic drawing of the brake device of one embodiment of the utility model Figure 2 .

[0023] Figure 6 It is a structural schematic drawing of the brake pad of one embodiment of the utility model Figure 1 .

[0024] Figure 7 It is a structural schematic drawing of the brake pad of one embodiment of the utility model Figure 2 .

[0025] Figure 8 It is a structural schematic drawing of the free-aligning coupling of one embodiment of the utility model.

[0026] Figure 9 It is a partial section view structural schematic drawing of the free-aligning coupling of one embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be described clearly and completely below in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] In the utility model, unless another definite provision and limit, the term " install ", " link ", " connect ", " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be directly connected, also can indirectly connect through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0030] In the utility model, unless another definite provision and limit, first feature is " on " or " under " second feature can include that first and second features directly contact, also can include that first and second features are not directly contact, but contact through additional feature between them. Moreover, first feature is " on ", " above " and " upper surface " of second feature includes that first feature is directly above and obliquely above second feature, or just indicates that the horizontal height of first feature is higher than second feature. First feature is " under ", " below " and " lower surface " of second feature includes that first feature is directly below and obliquely below second feature, or just indicates that the horizontal height of first feature is less than second feature.

[0031] Unless otherwise defined, technical terms or scientific terms used here should be understood as the usual meaning of the person skilled in the art to which the utility model belongs. The " first ", " second " and similar words used in the utility model patent application specification and claims do not represent any order, quantity or importance, but are used to distinguish different components. Similarly, " one " or " a " and similar words do not represent quantity limitation, but represent the existence of at least one.

[0032] As Figures 1-9As shown, as an embodiment of the utility model provides a kind of brake device, including magnetic yoke structure 1, release handle 2 being arranged in the rear side of magnetic yoke structure 1, and clutch plate 3, brake pad 4 and fixed plate 5 being arranged in the front side of magnetic yoke structure 1 in turn.The fixed plate 5 is connected with several equal-height columns 6 between magnetic yoke structure 1 by screw, bolt and other fasteners, for keeping the relative position of each position on fixed plate 5 is positioned at the same height relative to magnetic yoke structure 1.Coupling plate 3 and brake pad 4 are movably arranged between magnetic yoke structure 1 and fixed plate 5, and the movable channel 31 of coupling plate 3 is provided on the outer sleeve of equal-height column 6.Magnetic yoke structure 1 is telescopically connected with release shaft 11 along the front-back direction, and the front end of release shaft 11 is provided with extrusion head 12 for pressing coupling plate 3 to move towards fixed plate 5, and the outer circumferential side of extrusion head 12 protrudes from the outer circumferential side of release shaft 11, and elastic member 13 is sleeved on the outer sleeve of release shaft 11 and supported between the rear side of extrusion head 12 and the front side of magnetic yoke structure 1, which can be set as compression spring or other structure with elastic force.Elong the axial direction of release shaft 11, a first operation groove 121 is recessed on the front side of extrusion head 12 for screwdriver and other external operating members to exert force on extrusion head 12 to rotate around the axis of release shaft 11, and operation channel 10 is provided on coupling plate 3, fixed plate 5 and brake pad 4 respectively along the axial direction for screwdriver and other external operating members to extend into first operation groove 121.Release handle 2 is telescopically connected with screw shaft 21 along the front-back direction, and screw thread channel 111 is recessed on the rear end face of release shaft 11, and screw shaft 21 is threadedly connected with screw thread channel 111, and the rear end of screw shaft 21 is provided with limiting head 22, which protrudes from the outer circumferential side of screw shaft 21, and a second operation groove 221 is recessed on the rear side of limiting head 22 along the axial direction of screw shaft 21 for screwdriver and other external operating members to exert force on limiting head 22 to rotate around the axis of release shaft 21.Magnetic yoke structure 1 includes magnetic yoke shell and excitation coil arranged in the magnetic yoke shell, and release shaft 11 is arranged between the magnetic yoke body and the excitation coil.When energized, the excitation coil generates a magnetic field, which attracts extrusion head 12 to move backward along the axial direction of release shaft 11 relative to magnetic yoke structure 1 and compresses elastic member 13, thereby releasing the pressure of coupling plate 3 on brake pad 4, so that brake pad 4 and the vehicle mechanical operating components connected therewith can rotate, realizing release;When de-energized, the magnetic field of excitation coil disappears, extrusion head 12 moves forward along the axial direction of release shaft 11 under the elastic force of elastic member 13 and presses coupling plate 3 to move towards fixed plate 5, so that brake pad 4 is clamped between coupling plate 3 and fixed plate 5, making it difficult for the vehicle mechanical operating components connected with brake pad 4 to rotate, realizing braking.A plurality of movable beads are arranged circumferentially between the release handle 2 and the magnetic yoke structure 1, a first bead groove is concavely arranged on the front side of the magnetic yoke structure 1 for accommodating the front part of the movable bead, a second bead groove is concavely arranged on the rear side of the release handle 2 for accommodating the rear end of the movable bead, when the release handle 2 is pulled around the release shaft 11 in the positive direction, the release handle 2 rolls the movable bead by friction, and at the same time, the release handle 2 is rotated to the front side abutting against the movable bead, the release handle 2 is translated rearward relative to the magnetic yoke structure 1 under the support of the movable bead, and in turn, the limiting head 22 is translated rearward relative to the magnetic yoke structure 1, the release shaft 11 and the extrusion head 12 are translated rearward along with the screw shaft 21 connected with the limiting head 22, and at the same time, the extrusion head 12 compresses the elastic member 13, so as to release the pressing of the brake plate 3 on the brake pad 4, and the brake pad 4 and the vehicle mechanical operation component synchronously connected therewith can rotate, and the release is realized; when the release handle 2 is pulled around the release shaft 11, the release handle 2 rolls the movable bead by friction, and at the same time, the release handle 2 is reversely rotated until the rear end of the movable bead is accommodated in the second bead groove, the release handle 2 is translated forward relative to the magnetic yoke structure 1, the extrusion head 12 moves forward along the axial direction of the release shaft 11 under the elastic operation of the elastic member 13, and the extrusion head 12 presses the clutch plate 3 to move in the direction of the fixed plate 5, so that the brake pad 4 is clamped between the clutch plate 3 and the fixed plate 5, and the vehicle mechanical operation component synchronously connected with the brake pad 4 is difficult to rotate, and the brake is realized. The axial movement range of the release shaft 11 relative to the magnetic yoke structure 1 in the brake device is limited by the extrusion head 12 at the front end of the release shaft 11 and the limiting head 22 at the rear end of the screw shaft 21, and the screw shaft 21 is threadedly connected with the threaded channel 111 on the release shaft 11, so that the screw shaft 21 can be detached from the release shaft 11 by rotating the screw shaft 21 relative to the release shaft 11 to remove the limiting of the axial movement of the release shaft 11 by the limiting head 22, so that the release shaft 11 can be detached from the magnetic yoke structure 1, which is convenient for later maintenance or replacement; and when disassembling, an external operating member such as a screwdriver can be inserted into the first operating groove 121 in the extrusion head 12 through the operating channels 10 on the clutch plate 3, the fixed plate 5 and the brake pad 4, and is matched in the first operating groove 121 to rotate the extrusion head 12 in the positive direction around the axis of the release shaft 11, and another external operating member such as a screwdriver can be inserted into the second operating groove 221 in the limiting head 22 and matched in the second operating groove 211 to rotate the limiting head 22 in the reverse direction around the axis of the screw shaft 21, so that the screw shaft 21 can be rotated relative to the release shaft 11 to be separated from each other, which is convenient for assembly and disassembly, and is convenient for later maintenance or replacement.

[0033] As Figure 4 , Figure 5As shown in the drawings, in some embodiments, the first operation groove 121 is arranged in a polygonal structure, such as a hexagonal, octagonal, or cylindrical groove structure, and the second operation groove 221 is arranged in a polygonal structure, such as a hexagonal, octagonal, or cylindrical groove structure, facilitating cooperation with external operating members such as a bolt cutter to transmit torque.

[0034] As shown in the drawings, Figure 2 In some embodiments, the release shaft 11 and the extrusion head 12 are provided with a mounting channel along the axial direction of the release shaft 11, and the inner wall of the threaded channel 111 and the inner wall of the first operation groove 121 are arranged along the inner wall of the mounting channel, respectively, so that the threaded channel 111 and the first operation groove 121 are in communication with each other, and the friction debris generated during the threaded cooperation between the screw shaft 21 and the threaded channel 111 can be discharged through the first operation groove 121.

[0035] As shown in the drawings, Figure 2 In some embodiments, the magnetic yoke structure 1 is provided with a first telescopic channel 14 along the front-rear direction, and the magnetic yoke structure 1 is concave from the front end to the rear end and provided with a movement channel 15 for the telescopic movement of the extrusion head 12 in the first telescopic channel 14, and the release shaft 11 is telescopically connected in the first telescopic channel 14, and the extrusion head 12 moves telescopically in the movement channel 15 along the movement channel 15 when the release shaft 11 moves telescopically along the first telescopic channel 14. The elastic member 13 is supported between the rear side of the extrusion head 12 and the end wall of the movement channel 15.

[0036] In some embodiments, the release handle 2 is provided with a second telescopic channel 23 corresponding to the first telescopic channel 14 along the front-rear direction, and the screw shaft 21 is telescopically connected in the second telescopic channel 23, and can move telescopically along the second telescopic channel 23 with the release shaft 11 when the release shaft 11 moves telescopically along the first telescopic channel 14.

[0037] As shown in the drawings, Figure 6 In some embodiments, the brake pad 4 is concave from the front side along the axial direction of the brake pad 4 to the rear, and is provided with a sunken channel 41 communicating with the operation channel 10 on the brake pad 4, and the front side wall of the brake pad 4 is provided with a plurality of first sunken grooves 42 along the circumferential direction of the sunken channel 41, the first sunken grooves 42 are recessed from the front side of the brake pad 4 to the rear, and the inner end of the first sunken groove 42 communicates with the first sunken channel 41, and the outer end penetrates the peripheral side wall of the brake pad 4, so that the friction debris and other substances generated after the mutual friction of the machine oil and the parts can be discharged to the outside in sequence through the sunken channel 41 and the first sunken groove 42. The sunken channel 41 can be used to store machine oil or friction debris, so as to avoid the accumulation of machine oil or friction debris in the operation channel 10 on the brake pad 4, which affects the stable connection between the brake pad 4 and the external vehicle operating parts. The arrangement of the first sunken groove 42 is also conducive to the heat dissipation of the brake pad 4 after friction with the fixed plate 5.

[0038] In some specific embodiments, the first sink groove 42 comprises a first sink section 421, a second sink section 422, and a third sink section 423 communicated between the first sink section 421 and the second sink section 422, the first sink section 421 and the second sink section 422 are arranged along the radial direction of the brake pad 4, and the first sink section 421 and the second sink section 422 are arranged along the same straight line, the third sink section 423 comprises a first intermediate section 4231 communicated with the first sink section 421 and the second sink section 422 respectively, and a first lateral section 4232 arranged on both sides of the first intermediate section 4231 respectively, the two ends of the first lateral section 4232 are communicated with the first sink section 421 and the second sink section 422 respectively, so that the oil or the friction debris and the like can flow into the second sink section 422 from the first intermediate section 4231 and each first lateral section 4232 respectively after passing through the first sink section 421, avoiding the blockage of one section to affect the discharge effect, and at the same time, the arrangement area of the first sink groove 42 is increased, which is more conducive to heat dissipation.

[0039] In some specific embodiments, the first intermediate section 4231 and the first sink section 421 and the second sink section 422 are arranged along the same straight line, the first lateral section 4232 comprises a first straight section 4233 arranged at an angle with the first intermediate section 4231 and communicated with the first sink section 421, and a first arc section 4234 with the arc center towards the first intermediate section 4232 and communicated with the first straight section 4233 and the second sink section 422 respectively, which is conducive to the centrifugal force of the oil or the friction debris and the like in each section to smoothly spin out of the outer circumferential side of the brake pad 4 when the brake pad 4 rotates.

[0040] As Figure 7As shown, in some embodiments, the rear side wall of the brake pad 4 is arranged with a plurality of second sinking grooves 43 along the circumferential direction of the operation channel 10 on the brake pad 4, the second sinking grooves 43 are recessed from the rear side of the brake pad 4 to the front, and the inner end of the second sinking grooves 43 is arranged in the operation channel 10 on the brake pad 4, and the outer end is arranged through the circumferential side wall of the brake pad 4, so that the oil or the friction debris generated after the mutual friction between the parts can be sequentially discharged to the outside through the first sinking grooves 42. The arrangement of the second sinking grooves 43 is also beneficial to the heat dissipation of the brake pad 4 and the clutch plate 3 after mutual friction. The second sinking grooves 43 include a fourth sinking section 431, a fifth sinking section 432, and a sixth sinking section 433 connected between the fourth sinking section 431 and the fifth sinking section 432, the fourth sinking section 431 and the fifth sinking section 432 are arranged along the radial direction of the brake pad 4, and the fourth sinking section 431 and the fifth sinking section 432 are arranged along the same straight line, the sixth sinking section 433 includes a second intermediate section 4331 connected with the fourth sinking section 431 and the fifth sinking section 432 at both ends, respectively, and a second side section 4332 arranged on both sides of the second intermediate section 4331, respectively, the both ends of the second side section 4332 are connected with the fourth sinking section 431 and the fifth sinking section 432, respectively, so that the oil or the friction debris can flow into the fifth sinking section 432 from the second intermediate section 4331 and each second side section 4332 after passing through the fourth sinking section 431, avoiding the blockage of one of the sections to affect the discharge effect, and also increasing the arrangement area of the second sinking grooves 43, which is more beneficial to heat dissipation. The second intermediate section 4331 is arranged on the same straight line with the fourth sinking section 431 and the fifth sinking section 432, and the second side section 4332 includes a second straight section 4333 arranged at an angle with the second intermediate section 4331 and connected with the fourth sinking section 431, and a second arc section 4334 with the arc center towards the second intermediate section 4331 and connected with the second straight section 4333 and the fifth sinking section 432 at both ends, respectively, which is beneficial to the centrifugal force of the oil or the friction debris in each section to smoothly spin out of the outer circumferential side of the brake pad 4 when the brake pad 4 rotates. In the present embodiment, the inner end of the second sinking grooves 43 is arranged apart from the operation channel 10 on the brake pad 4, so that the overall structure of the brake pad 4 is more solid and durable, of course, in other embodiments, the brake pad 4 can also be recessed from the rear side along the axial direction of the brake pad 4 to the front with a sinking channel connected with the operation channel 10 on the brake pad 4, so that the inner end of the second sinking grooves 43 is connected with the sinking channel, to improve the oil discharge, friction debris discharge and heat dissipation effect of the brake pad 4.

[0041] As Figure 2 , Figure 3As shown, in some embodiments, a positioning member 7 is arranged between the release handle 2 and the limiting head 22, a third telescopic channel 71 is provided through the positioning member 7 in the front-rear direction, the third telescopic channel 71 is arranged corresponding to the second telescopic channel 23, the screw shaft 21 is telescopically connected in the third telescopic channel 71, and can telescopically move along the second telescopic channel 23 and the third telescopic channel 71 with the release shaft 11 when the release shaft 11 telescopically moves along the first telescopic channel 14. The positioning member 7 is concavely provided with a movement channel 72 for the movement of the limiting head 22 in the third telescopic channel 71 from the rear side of the positioning member 7 to the front side. On the one hand, the limiting head 22 can telescopically move along the movement channel 72 with the screw shaft 21 when the screw shaft 21 telescopically moves along the second telescopic channel 23 and the third telescopic channel 71, and on the other hand, the movement channel 72 can also be used to accommodate the limiting head 22, so as to avoid the limiting head 22 protruding from the rear side of the positioning member 7, protect the side of the limiting head 22 from being easily knocked, and prolong the service life of the limiting head 22. The movement channel 72 is provided as a conical annular surface, and the inner diameter of the movement channel 72 gradually decreases from the rear side to the front side. The front side of the limiting head 22 is provided with a conical annular surface matched with the movement channel 72, so that the limiting head 22 and the movement channel 72 are more and more tightly matched during the threaded connection of the screw shaft 21 relative to the release shaft 11, thereby improving the tightness of the limiting head 22 and the positioning member 7.

[0042] As shown, Figure 5 In some embodiments, the positioning member 7 is concavely provided with an annular groove 73 arranged outside the third telescopic channel 71 from the front side of the positioning member 7 to the rear side. A conical ring gasket 74 is arranged in the annular groove 73 and supported between the rear side of the release handle 2 and the end surface of the annular groove 73. The inner diameter of the conical ring gasket 74 gradually decreases from the front side to the rear side, so as to provide a buffering effect between the positioning member 7 and the release handle 2, prevent noise caused by vibration of the positioning member 7 relative to the release handle 2 during vehicle driving, or prevent loosening of the positioning member 7 relative to the release handle 2 to affect the braking effect. In this embodiment, a plurality of split openings 741 are provided in the circumferential direction from the inner circumferential side of the conical ring gasket 74, so that the rear side of the conical ring gasket 74 can be deformed by contraction or opening of the split openings 741 under the extrusion of the positioning member 7, so as to provide a larger buffering effect.

[0043] As shown, Figure 8 , Figure 9As shown, in some embodiments, the free-aligning coupling 8 further comprises a main body 81 and an elastic structure 82, the main body 81 is arranged as a column structure, and the operation channel 10 on the brake pad 4 is arranged as a shape matching the main body 81. The column structure has two first end walls 811 and a plurality of first side walls 812 arranged between the two first end walls 811 along different planes, wherein one or more of the first side walls 812 are provided with an elastic base 813 arranged along the axial direction of the main body 81, the elastic base 813 comprises a mounting seat 8131 and a movable slot 8132 arranged on the side of the mounting seat 8131 along the circumferential direction of the main body 81. The mounting seat 8131 has a second side wall 8134 arranged along the first side wall 812, and the outer surface of the second side wall 8134 is arranged lower than the outer surface of the first side wall 812, which can be used to arrange the elastic structure 2, reduce the height of the elastic structure 2 protruding from the first side wall 812, and improve the tightness of the arrangement between the free-aligning coupling 8 and the inner side wall of the operation channel 10 on the brake pad 4. The middle of the main body 81 is provided with a positioning hole 814 for positioning connection with an external positioning shaft such as a vehicle running transmission shaft, the positioning hole 814 is arranged as a non-circular structure matching the external vehicle running transmission shaft, which can avoid the rotation of the main body 81 relative to the external vehicle running transmission shaft, and facilitate the transmission of the torsion between the main body 81 and the external vehicle running transmission shaft. The elastic structure 82 comprises a connecting piece 821 positioned and connected on the mounting seat 8131, and an elastic piece 822 extending from the side of the connecting piece 821 towards the movable slot 8132 for abutting against the inner side wall of the operation channel 10 on the brake pad 4. The elastic piece 822 can elastically deform towards the inside of the movable slot 8132 under the abutting pressure of the inner side wall of the operation channel 10 on the brake pad 4, and provide an elastic force for moving the inner side wall of the operation channel 10 on the brake pad 4 away from the movable slot 8132. The elastic piece 822 has an arc-shaped rebound piece 8221 curved towards the movable slot 8132, and the outer surface of the arc-shaped rebound piece 8221 is formed with an abutting portion higher than the outer surfaces of the first side wall 812 and the second side wall 8134, so that the abutting portion protrudes from the outer surfaces of the first side wall 812 and the second side wall 8134, and can elastically deform towards the inside of the movable slot 8132 to reduce the height distance of the abutting portion relative to the first side wall 812 under the abutting pressure of the inner side wall of the operation channel 10 on the brake pad 4. The movable slot 8132 is used to provide a deformation space for the elastic deformation of the elastic piece 822.The elastic sheet 822 can elastically deform into the movable groove 8132 when the inner side wall of the operating channel 10 on the brake plate 4 abuts against the abutting portion, and provide an elastic force for the abutting portion to abut against the inner side wall of the operating channel 10 on the brake plate 4 away from the movable groove 8132, so that the main body 81 can be tensioned between the inner side wall of the operating channel 10 on the brake plate 4 and the mounting seat 8131 through the elastic structure 82 to connect the whole free-aligning coupling 8 and the inner side wall of the operating channel 10 on the brake plate 4 closely, thereby reducing the noise generated by the friction between the free-aligning coupling 8 and the inner side wall of the operating channel 10 on the brake plate 4, and since the arc-shaped elastic sheet 8221 can form a line-surface contact with the inner side wall of the operating channel 10 on the brake plate 4, the contact area is increased, the stability of the elastic sheet 822 and the inner side wall of the operating channel 10 on the brake plate 4 is improved, the brake plate 4 is not easy to shake along the axial direction relative to the free-aligning coupling 8, the noise generated by the friction between the free-aligning coupling 8 and the brake plate 4 is further reduced, and the service life of the free-aligning coupling 8 and the brake plate 4 is prolonged.

[0044] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0045] In summary, the above only describes the preferred embodiments of the present application, and any changes and modifications made within the scope of the present application shall be included in the scope of the present application.

Claims

1. A brake device characterized by comprising: The brake includes a magnetic yoke structure, a release handle arranged at the back side of the magnetic yoke structure, and a clutch plate, a brake pad and a fixed plate arranged in sequence at the front side of the magnetic yoke structure. A plurality of equal-height columns are connected between the fixed plate and the magnetic yoke structure, the clutch plate and the brake pad are movably arranged between the magnetic yoke structure and the fixed plate, and the clutch plate is provided with a movable channel sleeved on the equal-height columns. A release shaft is telescopically connected to the magnetic yoke structure along the front-rear direction, a front end of the release shaft is provided with a pressing head for pressing the clutch plate to move towards the fixed plate, the outer circumferential side of the pressing head protrudes from the outer circumferential side of the release shaft, an elastic member is sleeved on the release shaft and supported between the rear side of the pressing head and the front side of the magnetic yoke structure, a first operation groove is recessed on the front side surface of the pressing head along the axial direction of the release shaft and used for an external operating member to exert force on the pressing head to rotate the pressing head around the axis of the release shaft, the clutch plate, the fixed plate and the brake pad are respectively provided with an operation channel penetrating along the axial direction and used for the external operating member to extend into the first operation groove. A screw shaft is telescopically connected to the release handle along the front-rear direction, a threaded channel is recessed on the rear end surface of the release shaft along the front-rear direction, the screw shaft is threadedly connected to the threaded channel, a limiting head is provided at the rear end of the screw shaft and protrudes from the outer circumferential side of the screw shaft, a second operation groove is recessed on the rear side surface of the limiting head along the axial direction of the screw shaft and used for an external operating member to exert force on the limiting head to rotate the limiting head around the axis of the release shaft.

2. The brake device according to claim 1, characterized by: The first operation groove is in a polygonal structure, and / or the second operation groove is in a polygonal structure.

3. The brake device according to claim 1, characterized by: An installation channel penetrates along the axial direction of the release shaft and is provided on the release shaft and the pressing head, the inner wall of the threaded channel and the inner wall of the first operation groove are respectively arranged along the inner wall of the installation channel.

4. The brake device according to claim 1, characterized by: A first telescopic channel penetrates along the front-rear direction and is provided on the magnetic yoke structure, a movement channel is recessed on the front end surface of the magnetic yoke structure along the front-rear direction and used for the pressing head to move telescopically in the movement channel, the release shaft is telescopically connected in the first telescopic channel, and the elastic member is supported between the rear side of the pressing head and the end wall of the movement channel. A second telescopic channel is provided on the release handle along the front-rear direction and arranged corresponding to the first telescopic channel, and the screw shaft is telescopically connected in the second telescopic channel.

5. The brake device of claim 1, wherein: A subsidence channel is recessed on the front side surface of the brake pad along the axial direction of the brake pad and used for connecting the operation channels on the brake pad, a plurality of first subsidence grooves are arranged on the front side wall of the brake pad along the circumferential direction of the subsidence channel, the first subsidence grooves are recessed from the front side surface of the brake pad towards the rear, and the inner ends of the first subsidence grooves are connected to the first subsidence channel and the outer ends of the first subsidence grooves penetrate the circumferential wall of the brake pad.

6. The brake device according to claim 5, characterized in that: The first subsidence groove includes a first subsidence section, a second subsidence section and a third subsidence section connected between the first subsidence section and the second subsidence section, the first subsidence section and the second subsidence section are arranged along the radial direction of the brake pad, and the first subsidence section and the second subsidence section are arranged along the same straight line, the third subsidence section includes a first intermediate section connected to the first subsidence section and the second subsidence section at both ends and first side sections arranged on both sides of the first intermediate section, and both ends of the first side sections are connected to the first subsidence section and the second subsidence section.

7. A brake as claimed in claim 6, wherein: The first intermediate section is arranged in a same straight line with the first and second sunken sections, the first side section includes a first straight section arranged at an angle with the first intermediate section and communicated with the first sunken section, and a first arc section with its arc center towards the first intermediate section and communicated with the first straight section and the second sunken section at two ends thereof; and / or, The rear side wall of the brake pad is arranged with a plurality of second sunken grooves along the circumferential direction of the operation channel on the brake pad, the second sunken grooves are recessed from the rear side of the brake pad towards the front, and the inner end of the second sunken groove is arranged at intervals with the operation channel on the brake pad, and the outer end is arranged through the circumferential wall of the brake pad, the second sunken groove includes a fourth sunken section, a fifth sunken section and a sixth sunken section communicated between the fourth and fifth sunken sections, the fourth and fifth sunken sections are arranged along the radial direction of the brake pad, and the fourth and fifth sunken sections are arranged in a same straight line, the sixth sunken section includes a second intermediate section communicated with the fourth and fifth sunken sections at two ends thereof, and a second side section arranged at two sides of the second intermediate section, the two ends of the second side section are communicated with the fourth and fifth sunken sections, the second intermediate section is arranged in a same straight line with the fourth and fifth sunken sections, the second side section includes a second straight section arranged at an angle with the second intermediate section and communicated with the fourth sunken section, and a second arc section with its arc center towards the second intermediate section and communicated with the second straight section and the fifth sunken section at two ends thereof.

8. A brake device according to any one of claims 1 to 7, wherein: The positioning member is arranged between the release handle and the limiting head, a third telescopic channel is arranged through the positioning member along the front-rear direction, the screw shaft is telescopically connected in the third telescopic channel, a movement channel for the movement of the limiting head inwards is recessed from the rear side of the positioning member towards the front and communicated with the third telescopic channel, the movement channel is arranged as a conical annular surface, the inner diameter of the movement channel gradually decreases from the rear to the front, and the front side of the limiting head is provided with a conical annular surface matched with the movement channel.

9. The brake device of claim 8, wherein: The positioning member is recessed from the front side thereof towards the rear and arranged with an annular groove at intervals outside the third telescopic channel, a conical ring gasket is arranged in the annular groove and supported between the rear side of the release handle and the end surface of the annular groove, and the inner diameter of the conical ring gasket gradually decreases from the front to the rear.

10. The brake device of claim 9, wherein: It also includes a self-aligning coupling, which comprises a body and an elastic structure. The body is configured as a cylindrical structure, and the operating channel on the brake pad is configured to match the shape of the body. The cylindrical structure has two first end walls and a plurality of first side walls arranged along different planes between the two first end walls. At least one of the first side walls is provided with an elastic base arranged along the axial direction of the body. The elastic base includes a mounting seat and a movable groove arranged circumferentially on the side of the mounting seat. The middle of the body is provided with a positioning hole along its axial direction for positioning connection with an external positioning shaft. The elastic structure includes a connecting piece positioned and connected to the mounting seat, and an elastic piece extending from the side of the connecting piece toward the movable groove for pressing against the inner side wall of the operating channel on the brake pad. The elastic piece can elastically deform toward the movable groove under the pressure of the inner side wall of the operating channel on the brake pad and provide an elastic force that presses against the inner side wall of the operating channel on the brake pad away from the movable groove.

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