brake

Abstract

This application provides a brake, belonging to the field of mechanical braking technology, comprising: a housing; a clutch plate disposed adjacent to the housing; a friction disc disposed adjacent to the clutch plate; a coil disposed within the housing; an elastic element disposed within the housing; and at least one adjusting assembly; wherein the friction disc has a fixed seat, the fixed seat being fixed to the brake shaft of the target device; the adjusting assembly includes: a diaphragm disposed between the housing and the clutch plate; a first fixing member passing through the diaphragm and fixed to the clutch plate; and a second fixing member passing through the diaphragm and the housing and fixed to the target device. In this application, the friction disc has no backlash in the rotational direction around the axis, achieving zero backlash for the friction disc; the clutch plate, relative to the housing and the target device, has no fitting clearance in the rotational direction around the axis, achieving zero backlash for the clutch plate; simultaneously, the second fixing member serves the dual function of fixing the diaphragm and the brake, simplifying the overall structure.

Description

Technical Field

[0001] This application belongs to the field of mechanical braking technology, and specifically relates to a brake. Background Technology

[0002] Existing brakes require backlash control in practical applications, especially those with high installation precision requirements, such as robotics. When the friction disc connects to the bushing or brake shaft, a clearance fit is typically used. This clearance fit creates backlash between the friction disc and the bushing or brake shaft. To control this backlash, the mating dimensions between the friction disc and the bushing or brake shaft must be increased, which raises the machining difficulty and cost of the friction disc, bushing, or brake shaft.

[0003] Furthermore, during the operation of the brake, the clutch plate moves towards the housing when it is attracted by electromagnetic force. When the electromagnetic force decreases or disappears, the clutch plate moves towards the friction disc when it is subjected to spring force. Therefore, the clutch plate must also be in clearance fit in its direction of movement. However, the clutch plate is easily subjected to torque during braking and rotates around its axis, which causes backlash to occur in the direction of rotation around the axis. In order to control a small backlash, the dimensional accuracy of the clutch plate must be improved, which increases the processing difficulty and processing cost of the clutch plate. Utility Model Content

[0004] The purpose of this application is to provide a brake that solves the technical problem in the prior art where the friction disc and clutch plate are prone to large backlash in the rotational direction around the axis.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides a brake, comprising: a housing; a clutch plate disposed adjacent to the housing; a friction disc disposed adjacent to the clutch plate; a coil disposed within the housing; an elastic element disposed within the housing; and at least one adjusting assembly; wherein the friction disc has a fixing seat, the fixing seat being fixed to the brake shaft of a target device; the adjusting assembly comprising: a diaphragm disposed between the housing and the clutch plate; a first fixing member passing through the diaphragm and fixed to the clutch plate; and a second fixing member passing through the diaphragm and the housing and fixed to the target device.

[0006] In some possible implementations, the fixing seat is an annular structure arranged around the brake shaft, the fixing seat is disposed away from the clutch plate, or the fixing seat is disposed towards the clutch plate and located in the central hole of the clutch plate; the fixing seat is fixed to the brake shaft of the target device by a third fastener or an interference fit.

[0007] In some possible implementations, the second fastener passes through the housing from one end near the clutch plate and is fixed to the target device from the other end of the housing away from the clutch plate.

[0008] In some possible implementations, the second fixing member passes through the housing from the end opposite to the clutch plate and is fixed to the target device from the end of the housing near the clutch plate. A steel tube is sleeved on the outer periphery of the second fixing member, the steel tube abutting against the diaphragm and avoiding the clutch plate and the friction disc.

[0009] In some possible implementations, the outer periphery of the housing has the same number of mounting seats as the number of the adjusting components, and the second fastener passes through the mounting seats.

[0010] In some possible implementations, the outer periphery of the clutch plate has the same number of connecting portions as the gap adjustment assembly, one axial end of the first fixing member is located outside the housing, and the other axial end of the first fixing member is fixed to the connecting portion.

[0011] In some possible implementations, the connecting portion has a clearance hole for the second fastener to pass through.

[0012] In some possible implementations, the housing has a receiving groove at one end near the clutch plate, one axial end of the first fixing member is located in the receiving groove, and the other axial end of the first fixing member is located in the clutch plate.

[0013] In some possible implementations, a limiting groove is formed at one end of the housing near the clutch plate, and the diaphragm is disposed within the limiting groove.

[0014] In some possible implementations, the elastic element directly abuts against the clutch plate; or, the brake further includes a handle, a release pin, and a ball bearing, the ball bearing being disposed between the handle and the housing, the release pin being connected to the handle and located within the housing, the release pin having a step that directly abuts against the elastic element, the step abutting against the clutch plate.

[0015] The brake provided in this application has at least the following technical effects: Compared with the prior art, in this technical solution, the friction disc has a fixed seat, through which the friction disc is directly fixedly connected to the brake shaft of the target device, realizing a fixed connection between the friction disc and the brake shaft. When the friction disc generates braking torque, there is no backlash in the rotational direction around the axis, achieving zero backlash in the friction disc. At the same time, a clearance adjustment assembly is provided between the housing and the clutch plate. The diaphragm is fixed to the clutch plate by a first fixing member, and the diaphragm is fixed to the housing and the target device by a second fixing member, thus achieving a fixed connection between the clutch plate and the housing. Since the width of the diaphragm in the rotational direction around the axis is much greater than the axial thickness of the diaphragm, the diaphragm has high resistance to bending and shearing in the rotational direction around the axis, easily resisting the braking torque of the brake. This ensures that there is no fitting clearance between the clutch plate and the housing and the target device in the rotational direction around the axis, achieving zero backlash in the clutch plate. Meanwhile, the second fixing member serves the dual purpose of fixing the diaphragm and the brake, simplifying the overall structure.

[0016] In the above technical solution, when the coil is energized, the clutch plate is attracted by magnetic force and moves toward the housing. When the coil is de-energized, the clutch plate is moved toward the friction disc by the elastic force of the elastic element and abuts against the friction disc, thereby realizing the release and braking effect of the brake. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a brake provided in one embodiment of this application; Figure 2 for Figure 1 An exploded schematic diagram of the brake shown. Figure 3 for Figure 1 A cross-sectional schematic diagram of the brake shown; Figure 4 This is a schematic diagram of the structure of a brake provided in another embodiment of this application; Figure 5 for Figure 4 An exploded schematic diagram of the brake shown. Figure 6 for Figure 4 A cross-sectional schematic diagram of the brake shown; Figure 7 This is a schematic diagram of the structure of a brake provided in another embodiment of this application; Figure 8 for Figure 7 An exploded schematic diagram of the brake shown. Figure 9 for Figure 7 A cross-sectional schematic diagram of the brake shown; Figure 10 for Figure 7 A partial cross-sectional schematic diagram of the brake shown; Figure 11 for Figure 7 The diagram shows the structural schematic of the housing in the brake. Figure 12 This is a schematic diagram of the structure of a brake provided in another embodiment of this application; Figure 13 for Figure 12 An exploded schematic diagram of the brake shown. Figure 14 for Figure 12 A cross-sectional schematic diagram of the brake shown; Figure 15 for Figure 12 A partial cross-sectional schematic diagram of the brake shown; Figure 16 for Figure 1 , Figure 4 , Figure 7 and Figure 12 A schematic diagram of the diaphragm structure in the embodiment shown; Figure 17 To remove Figure 16 A schematic diagram of the membrane structure in an embodiment other than the one shown.

[0019] Explanation of reference numerals in the attached figures: 1. Brake; 10. Housing; 11. Mounting base; 12. Receiving groove; 13. Limiting groove; 20. Clutch plate; 21. Connecting part; 211. Clearance hole; 30. Friction disc; 31. Fixing base; 32. Third fixing part; 40. Coil; 50. Elastic element; 60. Gap adjustment assembly; 61. Diaphragm; 611. First through hole; 612. Second through hole; 62. First fixing part; 63. Second fixing part; 64. Steel tube; 70. Handle; 80. Release column; 81. Step; 90. Ball bearing; 100. Limiting column; 110. First connecting part; 120. Micro switch; 130. Second connecting part; 2. Brake shaft. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when an element is referred to as "fixed," "connected," "set," "equipped," or "fixed" to another element, an intervening element may or may not be present. Furthermore, when an element is referred to as "connected" to another element, it can be interpreted, according to the conventional understanding of those skilled in the art, as a mechanical connection, electrical connection, communication connection, etc. In this document, "multiple" refers to two or more items; "several" refers to one or more items.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] Please refer to the following: Figures 1 to 17 The brake 1 provided in the embodiments of this application will now be described.

[0024] Please see Figures 1 to 15 This application provides a brake 1, comprising: a housing 10; a clutch plate 20 disposed adjacent to the housing 10; a friction disc 30 disposed adjacent to the clutch plate 20; a coil 40 disposed within the housing 10; an elastic element 50 disposed within the housing 10; and at least one adjusting assembly 60; wherein the friction disc 30 has a fixing seat 31, the fixing seat 31 being fixed to the brake shaft 2 of the target device; the adjusting assembly 60 comprises: a diaphragm 61 disposed between the housing 10 and the clutch plate 20; a first fixing member 62 passing through the diaphragm 61 and fixed to the clutch plate 20; and a second fixing member 63 passing through the diaphragm 61 and the housing 10 and fixed to the target device.

[0025] Specifically, the friction disc 30 has a fixed seat 31, which is directly fixed to the brake shaft 2 of the target device. There is no need to set up structures such as tail plate and bushing. When the friction disc 30 generates braking torque, the friction disc 30 has no backlash relative to the brake shaft 2 in the rotational direction around the axis.

[0026] At least one adjusting assembly 60 is provided between the housing 10 and the clutch plate 20. For example, there may be one, two, three, or more adjusting assemblies 60. A diaphragm 61 is disposed between the housing 10 and the clutch plate 20. A first fixing member 62 fixes the diaphragm 61 to the clutch plate 20, and a second fixing member 63 simultaneously fixes the diaphragm 61 to both the housing 10 and the target device. There may be one or more first fixing members 62, and one or more second fixing members 63. Correspondingly, the diaphragm 61 has a first through hole 611 through which the first fixing member 62 passes, and a second through hole 612 through which the second fixing member 63 passes. For example, there may be two first fixing members 62 and one second fixing member 63. Figure 16 As shown, the diaphragm 61 has two first through holes 611 and one second through hole 612; for example, the first fixing member 62 is provided, and the second fixing member 63 is provided, as shown. Figure 17 As shown, the diaphragm 61 has a first through hole 611 and a second through hole 612. In practical applications, the number and position of the first fixing member 62 and the second fixing member 63 can be designed according to actual needs, and the diaphragm 61 is designed accordingly with the first through hole 611 and the second through hole 612. There are no specific restrictions on this. The target device can be a motor, a transmission, or other equipment that requires braking.

[0027] Because the diaphragm 61 is thin in the axial direction, it is prone to elastic deformation in the axial direction. Therefore, the diaphragm 61 does not affect the axial movement of the clutch plate 20. The width of the diaphragm 61 in the rotational direction around the axis is much greater than the axial thickness of the diaphragm 61. In the rotational direction around the axis, the diaphragm 61 has high resistance to bending and shearing, and can easily withstand the braking torque of the brake 1.

[0028] Since the diaphragm 61 is fixed to the clutch plate 20 by the first fixing member 62 and fixed to the housing 10 by the second fixing member 63 and is fixedly connected to the target equipment, there is no clearance between the clutch plate 20 and the target equipment in the rotation direction of the brake shaft 2. During braking, the clutch plate 20 has no backlash in the rotation direction around the axis.

[0029] The brake 1 provided in this application embodiment has at least the following technical effects: Compared with the prior art, in this technical solution, the friction disc 30 has a fixing seat 31, through which the friction disc 30 is directly fixedly connected to the brake shaft 2 of the target device, realizing the fixed connection between the friction disc 30 and the brake shaft 2. When the friction disc 30 generates braking torque, the friction disc 30 has no backlash in the rotation direction around the axis, thus achieving zero backlash in the friction disc 30. At the same time, a clearance adjustment assembly 60 is provided between the housing 10 and the clutch plate 20, wherein the diaphragm 61 is fixed to the clutch plate 20 by the first fixing member 62, and the second fixing member 6... 3. Fix the diaphragm 61 to the housing 10 and the target device. This achieves a fixed connection between the clutch plate 20 and the housing 10. Since the width of the diaphragm 61 in the rotational direction around the axis is much greater than the axial thickness of the diaphragm 61, the diaphragm 61 has high resistance to bending and shearing in the rotational direction around the axis. It can easily withstand the braking torque of the brake 1, so that there is no gap between the clutch plate 20 and the housing 10 and the target device in the rotational direction around the axis. This achieves zero backlash for the clutch plate 20. At the same time, the second fixing member 63 plays a dual role in fixing the diaphragm 61 and the brake 1, simplifying the overall structure.

[0030] In the above technical solution, when the coil 40 is energized, the clutch plate 20 is attracted by magnetic force and moves toward the housing 10. When the coil 40 is de-energized, the clutch plate 20 is moved toward the friction disc 30 by the elastic force of the elastic element 50 and abuts against the friction disc 30, thereby realizing the release and braking effect of the brake 1.

[0031] The specific structures of the housing 10, clutch plate 20, friction disc 30 and clearance adjustment assembly 60 are described in detail below, but are not limited to the following embodiments.

[0032] Please see Figures 1 to 3 , Figures 5 to 9 , Figures 13 to 14 In some embodiments, the fixing seat 31 is an annular structure arranged around the brake shaft 2, with the fixing seat 31 facing away from the clutch plate 20, or the fixing seat 31 facing the clutch plate 20 and located within the central hole of the clutch plate 20. In this embodiment, the fixing seat 31 is set as an annular structure, which can improve the fixing reliability between the friction disc 30 and the brake shaft 2 and avoid the possibility of backlash between the friction disc 30 and the brake shaft 2.

[0033] In this embodiment, depending on the actual installation scenario of the brake 1, the fixing seat 31 can be set at the end of the friction disc 30 away from the clutch plate 20. At this time, it is not necessary to consider the influence of the fixing seat 31 on the size of the central hole of the clutch plate 20 and the central hole of the housing 10. Alternatively, the fixing seat 31 can be set towards the clutch plate 20. In this case, the fixing seat 31 can extend into the central hole of the clutch plate 20 or continue to extend into the central hole of the housing 10. Such a setting can reduce the axial thickness of the entire brake 1.

[0034] Of course, in other embodiments, the fixing seat 31 can be an arc-shaped structure arranged around the brake shaft 2, or a segmented arc-shaped structure arranged around the brake shaft 2, with multiple arc-shaped structures forming a ring structure. No specific limitation is made in this regard.

[0035] The fixed base 31 is fixed to the brake shaft 2 of the target equipment by a third fixing member 32 or an interference fit. One or more third fixing members 32 may be provided. The friction disc 30 is directly fixed to the brake shaft 2 of the target equipment by the third fixing member 32 or an interference fit, so that the friction disc 30 and the brake shaft 2 are fixedly connected. When the friction disc 30 generates braking torque, there is no backlash in the rotation direction of the friction disc 30 around the axis, so zero backlash of the friction disc 30 can be achieved.

[0036] Please see Figures 1 to 3 , Figures 7 to 9 In some embodiments, the second fixing member 63 passes through the housing 10 from the end near the clutch plate 20 inside the housing 10 and is fixed to the target device from the end of the housing 10 away from the clutch plate 20. In this embodiment, the brake 1 is fixed to the target device from the end of the housing 10 away from the clutch plate 20. At this time, the diaphragm 61 is locked by the head of the second fixing member 63 to the end of the housing 10 near the clutch plate 20, and the tail of the second fixing member 63 is located inside the target device, so there is no need to provide an additional steel tube 64.

[0037] Please see Figures 4 to 6 , Figures 12 to 14 In some other embodiments, the second fixing member 63 passes through the housing 10 from one end away from the clutch plate 20 and is fixed to the target device from one end of the housing 10 near the clutch plate 20. A steel tube 64 is sleeved on the outer periphery of the second fixing member 63. The steel tube 64 abuts against the diaphragm 61 and avoids the clutch plate 20 and the friction disc 30.

[0038] In this embodiment, the brake 1 is fixed to the target device from the end of the housing 10 near the clutch plate 20. The head of the second fixing member 63 is located at the end of the housing 10 away from the clutch plate 20, and the tail of the second fixing member 63 is located inside the target device. Due to the presence of the clutch plate 20 and the friction disc 30, a steel tube 64 needs to be provided between the diaphragm 61 and the target device to tightly fix the diaphragm 61 between the housing 10 and the target device, achieving zero backlash of the clutch plate 20 relative to the steel tube 64, the housing 10, and the target device in the rotational direction around the axis. Since the diaphragm 61 is fixedly connected to the clutch plate 20, the steel tube 64 avoids the clutch plate 20 and the friction disc 30. Therefore, the clutch plate 20 will not contact the steel tube 64, and no wear will occur between the clutch plate 20 and the steel tube 64.

[0039] In this embodiment, one end of the steel tube 64 abuts against the diaphragm 61, and the other end abuts against the mounting surface of the target device, thereby achieving a fixed connection between the clutch plate 20 and the housing 10 and achieving zero back clearance of the clutch plate 20.

[0040] Based on the two configuration methods of the second fastener 63 described above, please refer to [link / reference]. Figures 1 to 6 In some embodiments, the outer periphery of the housing 10 has the same number of mounting seats 11 as the gap adjustment components 60, and the second fixing member 63 passes through the mounting seats 11. In this embodiment, the housing 10 has a certain radial thickness, and its overall outer periphery is circular. Based on this structure, the outer periphery of the housing 10 forms mounting seats 11 that extend radially outward. The second fixing member 63 passes through the mounting seats 11 and does not affect the structure of the coil 40, elastic member 50, etc. The coil 40 and elastic member 50 can be arranged according to the original spatial structure.

[0041] The mounting base 11 has an axial gap between the end face of the diaphragm 61 and the magnetic pole face of the housing 10, and the diaphragm 61 is located in the axial gap, so as to ensure that the clutch plate 20 and the housing 10 can be tightly attached when they are attracted.

[0042] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5In some embodiments, the outer periphery of the clutch plate 20 has the same number of connecting portions 21 as the gap adjustment assembly 60. One axial end of the first fixing member 62 is located outside the housing 10, and the other axial end of the first fixing member 62 is fixed to the connecting portion 21. In this embodiment, the clutch plate 20 also has a certain radial thickness, and its overall outer periphery is circular. Furthermore, the outer periphery of the clutch plate 20 is substantially the same as the outer periphery of the housing 10. That is, the main radial dimension of the clutch plate 20 is exactly the same as or substantially the same as the main radial dimension of the housing 10.

[0043] In order to achieve a fixed connection of the diaphragm 61, a connecting portion 21 extending outward in the radial direction is formed on the outer periphery of the clutch plate 20. One axial end of the first fixing member 62 is located outside the housing 10, specifically on one side of the mounting base 11, and the other axial end of the first fixing member 62 is fixed to the connecting portion 21.

[0044] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 In some embodiments, the connecting portion 21 has a clearance hole 211 for the second fixing member 63 to pass through. In this embodiment, the passing position of the second fixing member 63 overlaps with the covering position of the connecting portion 21. Therefore, by providing the clearance hole 211, spatial interference of the clutch plate 20 on the second fixing member 63 can be avoided. For example, in each adjusting assembly 60, there can be two first fixing members 62 and one second fixing member 63, with the two first fixing members 62 located on both sides of the second fixing member 63. In this case, a clearance hole 211 needs to be provided on the connecting portion 21. As another example, in each adjusting assembly 60, there can be one first fixing member 62 and one second fixing member 63. In this case, a clearance hole 211 can also be provided on the connecting portion 21. In practical applications, the number and position of the clearance holes 211 can be adjusted according to the number and position of the first fixing members 62 and the second fixing members 63.

[0045] Of course, in other embodiments, if the insertion position of the second fastener 63 does not overlap with the coverage position of the connecting part 21, then the avoidance hole 211 may not be provided on the connecting part 21, and there is no specific restriction on this.

[0046] Unlike the structure of the mounting base 11 and connecting part 21 in the above embodiments, please refer to [link to previous text]. Figures 7 to 15 In some other embodiments, the housing 10 has a receiving groove 12 at one end near the clutch plate 20, one axial end of the first fixing member 62 is located in the receiving groove 12, and the other axial end of the first fixing member 62 is located in the clutch plate 20. In this embodiment, the housing 10 does not have a mounting base 11, and the clutch plate 20 does not have a connecting part 21.

[0047] Specifically, a receiving groove 12 is provided at one end of the housing 10 near the clutch plate 20. This receiving groove 12 spatially avoids the holes in the housing 10 for accommodating the coil 40 and the elastic element 50. The first fixing member 62 has a head and a tail at one and the other axial ends, respectively. The head of the first fixing member 62 is located within the receiving groove 12, and the tail of the first fixing member 62 is fixed to the clutch plate 20. The second fixing member 63 directly passes through the radial thickness range of the housing 10. This arrangement does not affect the overall appearance dimensions of the brake 1, ensuring that the brake 1 has a relatively compact size.

[0048] The diaphragm 61 and the second fixing member 63 can be disposed in the outer magnetic pole of the housing 10 or in the inner magnetic pole of the housing 10. For example Figures 7 to 10 In the embodiment shown, the outer diameter of the friction disc 30 can be basically the same as the outer diameter of the clutch plate 20, which can increase the friction radius. Since the torque is equal to the friction force multiplied by the friction radius, the torque of the brake 1 is greater than that of the design with the steel tube 64 under the same outer diameter. Conversely, under the same torque, the elastic force of the elastic element 50 in this design can be smaller, which is also conducive to reducing the power of the brake 1 and achieving the effect of reducing energy consumption.

[0049] Please see Figure 8 , Figure 10 , Figure 11 , Figure 13 and Figure 15 In some embodiments, a limiting groove 13 is formed at one end of the housing 10 near the clutch plate 20, and the diaphragm 61 is disposed within the limiting groove 13. In this embodiment, the axial depth of the limiting groove 13 can be greater than or equal to the axial thickness of the diaphragm 61, and there is no specific limitation on this, as long as it ensures that the clutch plate 20 and the housing 10 can be tightly adhered when they are engaged. By providing the limiting groove 13, the circumferential position and elastic deformation of the diaphragm 61 can be limited.

[0050] In the embodiment where the receiving groove 12 and the limiting groove 13 are provided, the outer periphery of the housing 10 and the outer periphery of the clutch plate 20 are basically the same. The clutch plate 20 does not have an additional connecting part 21. In order to avoid the second fixing member 63 in space, the outer periphery of the clutch plate 20 is provided with an avoidance hole 211.

[0051] Please see Figures 1 to 11In some embodiments, the brake 1 is adapted to a common stacked structure, that is, the housing 10, clutch plate 20, and friction disc 30 are stacked sequentially, and the coil 40 and elastic element 50 are both disposed in the holes opened in the housing 10, with the elastic element 50 directly abutting against the clutch plate 20. When the brake 1 includes a manual release assembly, there is no structural connection between the elastic element 50 and the manual release assembly. In this embodiment, the brake 1 may selectively adopt the specific structure of the aforementioned gap adjustment assembly 60.

[0052] For example, such as Figures 1 to 3 In the illustrated embodiment, the brake 1 is provided with a mounting base 11 and a connecting portion 21, but no steel tube 64 is provided. For example, as... Figures 4 to 6 In the illustrated embodiment, the brake 1 is provided with a mounting base 11, a connecting portion 21, and a steel tube 64. For example, as... Figures 7 to 11 In the embodiment shown, the brake 1 does not have a mounting base 11, a connecting part 21, and a steel tube 64. The first fixing member 62 is disposed in the receiving groove 12, and the diaphragm 61 is disposed in the limiting groove 13.

[0053] Please see Figures 12 to 15 In some other embodiments, the brake 1 is adapted to a modified stacked structure, that is, the brake 1 further includes a handle 70, a release pin 80, and a ball bearing 90. The ball bearing 90 is disposed between the handle 70 and the housing 10. The release pin 80 is connected to the handle 70 and is located inside the housing 10. The release pin 80 has a step 81 that directly abuts against the elastic member 50, and the step 81 abuts against the clutch plate 20. The brake 1 in this embodiment can optionally adopt the specific structure of the above-described adjusting assembly 60.

[0054] In this embodiment, the handle 70 can be fixedly connected to the release post 80 via the first connector 110. When there is one elastic element 50, the elastic element 50 is sleeved on the outer periphery of the release post 80, and the elastic element 50 abuts against the step 81 of the release post 80, which abuts against the clutch plate 20. When there are multiple elastic elements 50, the multiple elastic elements 50 are respectively disposed in the holes opened in the housing 10, and all the multiple elastic elements 50 abut against the step 81 of the release post 80. Among them, one elastic element 50 may be sleeved on the outer periphery of the release post 80.

[0055] In this embodiment, the brake 1 may further include a limiting post 100 for limiting the rotation angle of the handle 70. The brake 1 may also include a micro switch 120, which is fixed to the housing 10 via a second connector 130.

[0056] For example, such as Figures 12 to 15In the illustrated embodiment, the brake 1 has a steel tube 64 but no mounting base 11 or connecting part 21. The first fixing member 62 is disposed in the receiving groove 12, and the diaphragm 61 is disposed in the limiting groove 13. Since the diaphragm 61 is in the limiting groove 13, the axial thickness of the diaphragm 61 is less than the axial thickness of the limiting groove 13, and the middle part of the diaphragm 61 is pressed by the steel tube 64. The two ends of the diaphragm 61 are fixed to the clutch plate 20. The limiting groove 13 causes the diaphragm 61 to undergo elastic deformation in the axial direction. When the handle 70 is opened, the elastic deformation force of the diaphragm 61 will pull the clutch plate 20 close to the housing 10. The clutch plate 20 will not contact the friction disc 30 in the axial direction due to vibration or axial tilt, which can prevent the friction disc 30 from generating contact friction and friction noise when rotating. Furthermore, since the diaphragm 61 is fixedly connected to the clutch plate 20, the clutch plate 20 will not contact the steel tube 64, and there will be no wear between the clutch plate 20 and the steel tube 64.

[0057] In the above embodiments, the first fixing member 62, the second fixing member 63, the third fixing member 32, the first connecting member 110, and the second connecting member 130 can all be fasteners such as screws, bolts, rivets, pins, and dowels, and there are no specific restrictions on them.

[0058] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the specification has recorded each combined embodiment and can support different combined embodiments.

[0059] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A brake, characterized in that, include: chassis; The clutch plate is disposed adjacent to the housing; A friction disc is disposed adjacent to the clutch plate; The coil is located inside the housing; An elastic element is disposed within the housing; as well as At least one gap adjustment component; The friction disc has a fixed base, which is fixed to the brake shaft of the target device; The gap adjustment assembly includes: a diaphragm disposed between the housing and the clutch plate; a first fixing member passing through the diaphragm and fixed to the clutch plate; and a second fixing member passing through the diaphragm and the housing and fixed to the target device. In one embodiment, the second fixing member passes through the housing from one end near the clutch plate and is fixed to the target device from the other end of the housing away from the clutch plate; or, the second fixing member passes through the housing from one end away from the clutch plate and is fixed to the target device from the other end of the housing near the clutch plate, with a steel tube sleeved on the outer periphery of the second fixing member, the steel tube abutting against the diaphragm and avoiding the clutch plate and the friction disc.

2. The brake according to claim 1, characterized in that, The fixing seat is an annular structure arranged around the brake shaft. The fixing seat is disposed away from the clutch plate, or the fixing seat is disposed towards the clutch plate and located in the central hole of the clutch plate. The fixing seat is fixed to the brake shaft of the target device by a third fixing member or an interference fit.

3. The brake according to claim 1, characterized in that, The outer periphery of the housing has the same number of mounting seats as the gap adjustment components, and the second fastener passes through the mounting seats.

4. The brake according to claim 3, characterized in that, The outer periphery of the clutch plate has the same number of connecting portions as the gap adjustment assembly. One axial end of the first fixing member is located outside the housing, and the other axial end of the first fixing member is fixed to the connecting portion.

5. The brake according to claim 4, characterized in that, The connecting part has a clearance hole for the second fastener to pass through.

6. The brake according to claim 1, characterized in that, The housing has a receiving groove at one end near the clutch plate, one axial end of the first fixing member is located in the receiving groove, and the other axial end of the first fixing member is located in the clutch plate.

7. The brake according to claim 6, characterized in that, A limiting groove is provided at one end of the housing near the clutch plate, and the diaphragm is disposed in the limiting groove.

8. The brake according to claim 1, characterized in that, The elastic element directly abuts against the clutch plate; Alternatively, the brake may further include a handle, a release pin, and a ball bearing, wherein the ball bearing is disposed between the handle and the housing, the release pin is connected to the handle and is located inside the housing, and the release pin has a step that directly abuts against the elastic element and the step abuts against the clutch plate.

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