brake

Abstract

The application provides a kind of brake, belongs to mechanical braking technical field, comprising: shell;Armature;Friction disc;Tailgate;Coil;First elastic member;And manual release component, including handle, ball, release column and end cover;Wherein, shell is equipped with first limit slot, handle is equipped with second limit slot, ball is located in first limit slot, and it has the first attitude in second limit slot and the second attitude outside second limit slot;Release column is set through shell, and it has the first limit step of abutment with first elastic member;End cover is sleeved on the outer periphery of release column, and abuts to the end of handle away from shell, release column has first riveting portion, and first riveting portion abuts to the end of end cover away from handle.The application realizes the installation of handle by riveting mode, so that the first riveting portion directly presses the end cover, which simplifies the installation process and machining process to some extent.

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 include various structural types. One type of brake includes a housing, coil, armature, friction disc, tailplate, assemblies, and manual release assembly. This allows for manual release of the brake during power outages, for inspection, maintenance, and repositioning. The manual release assembly specifically includes a handle, ball bearings, a release pin, an elastic element, and a positioning pin. The ball bearings are located between the handle and the housing. The release pin passes through the housing along its axis and cooperates with the elastic element, abutting against the armature. The handle is fixedly connected to the release pin via the positioning pin. Rotating the handle moves the ball bearings outside the handle's groove, lifting the handle and causing the release pin to move away from the armature, allowing the friction disc to rotate freely.

[0003] However, when installing the handle, threaded holes need to be drilled on the release pin, and then the handle and release pin are fixed together using positioning pins, which makes the installation method more complicated. The positioning pins are also prone to loosening, causing the handle to fail. Utility Model Content

[0004] The purpose of this application is to provide a brake that solves the technical problem in the prior art where, when installing the handle, a threaded hole needs to be made on the release pin, and then a positioning pin is used to fix the handle and the release pin together, which makes the installation method more complicated and the positioning pin is prone to loosening, causing the handle to fail.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides a brake, comprising: a housing; an armature disposed adjacent to the housing; a friction disc disposed adjacent to the armature; a tailplate disposed adjacent to the friction disc and connected to the housing via an assembly; a coil disposed within the housing and facing the armature; a first elastic element disposed within the housing and facing the armature; and a manual release assembly disposed at one end of the housing away from the armature, comprising a handle, a ball bearing, a release pin, and an end cap. The housing has a first limiting groove, the handle has a second limiting groove, the ball is disposed in the first limiting groove and has a first posture in the second limiting groove and a second posture outside the second limiting groove; the release post is disposed through the housing and has a first limiting step that abuts against the first elastic member. The end cap is fitted around the outer periphery of the release post and abuts against the end of the handle away from the housing. The end of the release post away from the armature has a first riveting part. Before installation, the first riveting part can pass through the first central hole of the end cap and protrude from the end cap. After installation, the first riveting part deforms and abuts against the end of the end cap away from the handle. When the coil is energized, it generates a magnetic field, causing the armature to move towards the housing against the elastic force of the first elastic element. When the coil is not energized and the handle is not rotated, the ball is located in the second limiting groove, the first elastic element is in close contact with the first limiting step, the first limiting step abuts against the armature, and the armature presses against the friction disc. When the handle is rotated, the ball is located outside the second limiting groove, the handle is lifted by the ball, the handle moves the end cap and the release post away from the armature, the first elastic element is squeezed by the first limiting step, and the friction disc is released.

[0006] In some possible implementations, the manual release assembly further includes a second elastic element located between the end cap and the handle.

[0007] In some possible implementations, the end cap has a receiving groove, the second elastic member is disposed in the receiving groove, and the second elastic member has an orientation that extends from the receiving groove to abut against the handle.

[0008] In some possible implementations, the end cap has several first notches at the point where it contacts the first riveting part, and the first riveting part is embedded in several of the first notches.

[0009] In some possible implementations, the first central hole has a first chamfer at the edge of the hole wall near the first riveting part.

[0010] In some possible implementations, the release post has a second limiting step, the end cap abuts against the second limiting step in the axial direction, and the release post has a hollow structure.

[0011] In some possible implementations, the release post has a columnar body, the first limiting step is an annular body fitted onto the columnar body, and the other end of the columnar body away from the first riveting part has a second riveting part that abuts against the first limiting step.

[0012] In some possible implementations, the portion where the first limiting step contacts the second riveting part has several second notches, and the second riveting part is embedded in several second notches.

[0013] In some possible implementations, the first limiting step has a second central hole fitted onto the columnar body, and the second central hole has a second chamfer on the edge of the hole wall near the second riveting part.

[0014] In some possible implementations, the handle has a third central hole fitted around the outer periphery of the release post, the third central hole being clearance-fitted with the outer periphery of the release post, and the handle being rotatable relative to the release post.

[0015] The brake provided in this application has at least the following technical advantages compared with the prior art: When the handle is not started to rotate, the ball is located in the second limiting groove, the first elastic element is in close contact with the first limiting step, the first limiting step abuts against the armature, and the armature presses against the friction disc, at which time the friction disc cannot rotate freely; when the handle is started to rotate, the ball is located outside the second limiting groove, the handle is lifted by the ball, the handle drives the end cover and release post away from the armature, the first elastic element is squeezed by the first limiting step, the friction disc is released, and at this time the friction disc can rotate freely. This manual release method is simpler to operate, and the first elastic element retains the traditional function of pushing the armature, and can also be driven by the release post to achieve the effect of manual release.

[0016] Furthermore, existing methods typically use connectors such as positioning pins to fix the handle and release pin together. This not only requires matching the size of the positioning pins but also requires threaded holes to be made in the release pin, making the installation process and manufacturing steps more complex. However, the brake provided in this application does not require threaded holes in the release pin. The first riveting part of the release pin is used to limit the installation of the end cap, i.e., the handle is installed by riveting. The first riveting part presses the end cap tightly, simplifying the installation process and manufacturing steps to a certain extent, and is more stable than the positioning pin connection method. 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 A schematic diagram of the brake provided in an embodiment of this application when the first riveting part is not riveted; Figure 2 for Figure 1 A cross-sectional schematic diagram of the brake shown; Figure 3 for Figure 2 The diagram shows a partially enlarged view of the brake at point A after the first riveting joint is riveted. Figure 4 This is a cross-sectional schematic diagram of a brake provided in another embodiment of this application; Figure 5 for Figure 4 The diagram shows a partially enlarged view of the brake at point B after the first riveting joint has been riveted. Figure 6 for Figure 4 The diagram shows the structure of the release pin used in the brake. Figure 7 for Figure 6 A schematic cross-sectional view of the release column shown; Figure 8 for Figure 7 The diagram shows a partial enlarged view of the release post at point C after the second riveting joint is riveted.

[0019] Explanation of reference numerals in the attached figures: 1-Brake, 10-Housing, 11-First limiting groove, 20-Armature, 30-Friction disc, 40-Tailplate, 50-Coil, 60-First elastic element, 70-Manual release assembly, 71-Handle, 711-Second limiting groove, 72-Ball, 73-Release post, 731-First limiting step, 7311-Second notch, 7312-Second chamfer, 732-First riveting part, 733-Second limiting step, 734-Second riveting part, 74-End cap, 741-Receiving groove, 742-First notch, 743-First chamfer, 75-Second elastic element, 76-Limiting post, 80-Micro switch. 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 to," "fixed," "connected to," "connected to," "set on," "set on," or "fixed to" another element, an intervening element may or may not be present. Furthermore, when an element is referred to as "connected to" or "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 8The brake provided in the embodiments of this application will now be described.

[0024] Please see Figures 1 to 5 This application provides a brake 1, including: a housing 10; an armature 20 disposed adjacent to the housing 10; a friction disc 30 disposed adjacent to the armature 20; a tail plate 40 disposed adjacent to the friction disc 30 and connected to the housing 10 via an assembly; a coil 50 disposed inside the housing 10 and facing the armature 20; a first elastic member 60 disposed inside the housing 10 and facing the armature 20; and a manual release assembly 70 disposed at one end of the housing 10 away from the armature 20, including a handle 71, a ball 72, a release pin 73, and an end cap 74.

[0025] The housing 10 has a first limiting groove 11, and the handle 71 has a second limiting groove 711. The ball bearing 72 is located in the first limiting groove 11 and has a first posture located in the second limiting groove 711 and a second posture located outside the second limiting groove 711. The release post 73 is provided through the housing 10 and has a first limiting step 731 that abuts against the first elastic member 60. The end cap 74 is sleeved on the outer periphery of the release post 73 and abuts against the end of the handle 71 away from the housing 10. The end of the release post 73 away from the armature 20 has a first riveting part 732. Before installation, the first riveting part 732 can pass through the first central hole of the end cap 74 and protrude from the end cap 74. After installation, the first riveting part 732 deforms and abuts against the end of the end cap 74 away from the handle 71.

[0026] The ball bearing 72 is always located within the first limiting groove 11. The handle 71 can drive the release pin 73 to axially press the first elastic element 60. When the coil 50 is energized, it generates a magnetic field, causing the armature 20 to overcome the elastic force of the first elastic element 60 and move towards the housing 10. When the coil 50 is not energized and the handle 71 is not started to rotate, the ball bearing 72 is located within the second limiting groove 711, the first elastic element 60 is in close contact with the first limiting step 731, the first limiting step 731 abuts against the armature 20, and the armature 20 presses against the friction disc 30. At this time, the friction disc 30 cannot rotate freely. When the handle 71 starts to rotate, the ball bearing 72 is located outside the second limiting groove 711, the handle 71 is lifted by the ball bearing 72, and the handle 71 drives the end cover 74 and the release pin 73 away from the armature 20. The first elastic element 60 is pressed by the first limiting step 731, and the friction disc 30 is released. At this time, the friction disc 30 can rotate freely.

[0027] It is understood that the number of coil 50, first elastic element 60, ball 72, first limiting groove 11 and second limiting groove 711 can all be one or more, and the number of ball 72, first limiting groove 11 and second limiting groove 711 is the same. The positional relationship between the first elastic element 60 and the release post 73 can have various arrangements. For example, if there is one first elastic element 60, the first elastic element 60 can be sleeved on the outer periphery of the release post 73. Or, if there are multiple first elastic elements 60, the multiple first elastic elements 60 can be evenly surrounding the outer periphery of the release post 73. Or, one first elastic element 60 can be sleeved on the outer periphery of the release post 73, and multiple first elastic elements 60 can be surrounding the outer periphery of the release post 73. There are no specific restrictions on this.

[0028] The brake 1 provided in this application embodiment has at least the following technical effects compared with the prior art: When the handle 71 is not started to rotate, the ball 72 is located in the second limiting groove 711, the first elastic member 60 is in close contact with the first limiting step 731, the first limiting step 731 abuts against the armature 20, and the armature 20 presses the friction disc 30. At this time, the friction disc 30 cannot rotate freely. When the handle 71 is started to rotate, the ball 72 is located outside the second limiting groove 711, the handle 71 is lifted by the ball 72, the handle 71 drives the end cover 74 and the release post 73 away from the armature 20, the first elastic member 60 is squeezed by the first limiting step 731, and the friction disc 30 is released. At this time, the friction disc 30 can rotate freely. This manual release method is simpler to operate, and the first elastic member 60 retains the traditional function of pushing the armature 20, and can also be driven by the release post 73 to achieve the effect of manual release.

[0029] Furthermore, existing methods typically use connectors such as positioning pins to fix the handle 71 and release pin 73 together. This not only requires matching the size of the positioning pins but also requires threaded holes to be made in the release pin 73, making the installation process and manufacturing steps more complex. However, in the brake 1 provided in this application embodiment, it is not necessary to make threaded holes in the release pin 73. The first riveting part 732 of the release pin 73 is used to limit the installation of the end cover 74, that is, the handle 71 is installed by riveting. The first riveting part 732 presses the end cover 74, which simplifies the installation process and manufacturing steps to a certain extent and is more stable than the positioning pin connection method.

[0030] Furthermore, the release post 73 can be a solid structure or a hollow structure. When the release post 73 is hollow, the overall weight of the brake 1 can be reduced, and the motor shaft can be allowed to pass through the brake 1 via the hollow structure, thereby increasing the application range of the brake 1.

[0031] The specific structure of the manual release component 70 is illustrated below, but it is not limited to the following embodiments.

[0032] Please see Figure 2 and Figure 4 In some embodiments, the manual release assembly 70 further includes a second elastic element 75, which is located between the end cap 74 and the handle 71. The second elastic element 75 can be a wave spring, a disc spring, a conventional wire spring, etc. By providing the second elastic element 75, the end cap 74 abuts against the end of the handle 71 away from the housing 10 through the second elastic element 75, which can provide a certain buffering effect between the end cap 74 and the handle 71. On the one hand, during the riveting process of the first riveting part 732, the impact force of the end cap 74 on the handle 71 can be reduced. On the other hand, during the process of the handle 71 pulling the release post 73 and the end cap 74, it can play a shock absorption role, and when the manual release assembly 70 is not activated, it can reduce the play of the handle 71.

[0033] For example, the end cap 74 has a receiving groove 741, and the second elastic member 75 is disposed in the receiving groove 741, with the second elastic member 75 having an orientation extending from the receiving groove 741 to abut against the handle 71. Specifically, the number and shape of the receiving groove 741 are determined according to the number and shape of the second elastic member 75. For example, if the second elastic member 75 is a ring-shaped wave spring, then the receiving groove 741 is a continuous annular groove; or, for example, if the second elastic member 75 is multiple conventional wire springs, then the receiving groove 741 is multiple spaced grooves. By providing the receiving groove 741, the second elastic member 75 can be positioned and limited.

[0034] Please see Figures 2 to 5 In some embodiments, the release post 73 has a second limiting step 733, and the end cap 74 abuts against the second limiting step 733 in the axial direction. The release post 73 has a hollow structure. In this embodiment, the second limiting step 733 is formed on the outer periphery of the release post 73, so that the end cap 74 is pressed between the second limiting step 733 and the first riveting part 732, ensuring the installation reliability of the end cap 74, and thus ensuring the stability of the range of motion of the handle 71.

[0035] When the manual release assembly 70 includes the second elastic element 75, the installation process of the handle 71 is as follows: The handle 71, the second elastic element 75, and the end cap 74 are sequentially fitted onto one end of the release post 73. The end cap 74 abuts against the second limiting step 733. The height of the part of the release post 73 protruding from the end cap 74 can be 1 mm to 2 mm. The riveting equipment applies pressure to the first riveting part 732 before deformation, and the first riveting part 732 deforms, thereby tightening with the first center hole of the end cap 74. At the same time, the height of the part of the first riveting part 732 protruding from the end cap 74 decreases, and the cross-section of the part of the first riveting part 732 protruding from the end cap 74 increases. This cross-section is larger than the size of the first center hole of the end cap 74, thereby realizing the riveting of the end cap 74 and the release post 73.

[0036] The riveting methods mentioned above can include rotary riveting, cold heading, cold pressing, drilling riveting, etc., and there are no specific restrictions on them.

[0037] Please see Figure 3 and Figure 5 In some embodiments, the end cap 74 has a plurality of first notches 742 at the contact point with the first riveting part 732, and the first riveting part 732 is embedded in the plurality of first notches 742. Specifically, the end cap 74 may be provided with one or more first notches 742. The first riveting part 732 deforms during the riveting process and fills into the first notches 742, so that the first riveting part 732 is embedded in the first notches 742. This can prevent relative rotation between the end cap 74 and the release post 73 and ensure the installation reliability of the end cap 74.

[0038] Please see Figure 3 and Figure 5 In some embodiments, the end cap 74 has a first central hole fitted around the outer periphery of the release post 73, and the first central hole has a first chamfer 743 near the edge of the hole wall of the first riveting part 732. The end cap 74 is fitted around the outer periphery of the release post 73 through the first central hole. The first chamfer 743 can be an angled corner or a rounded corner, which can increase the contact area between the first riveting part 732 and the end cap 74, and facilitate the deformation of the first riveting part 732 during the riveting process, reducing physical obstruction during the riveting process.

[0039] Of course, in other embodiments, the end cap 74 may not have the first chamfer 743, and there are no specific restrictions on this.

[0040] Please see Figures 6 to 8 In some embodiments, the release post 73 has a columnar body, and the first limiting step 731 is an annular body fitted onto the columnar body. The other end of the columnar body, away from the first riveting portion 732, has a second riveting portion 734 that abuts against the first limiting step 731. In this embodiment, the release post 73 is actually composed of a columnar body and an annular body, which are connected together by riveting. The first limiting step 731 is fitted onto the outer periphery of the columnar body, and the second riveting portion 734 locks the first limiting step 731. The riveting process of the first limiting step 731 is the same as the riveting process of the handle 71 and the end cap 74 described above, and will not be repeated here.

[0041] Understandably, the cylindrical body can be hollow or solid. The outer diameters at both ends of the cylindrical body can be the same or different. When the outer diameters at both ends of the cylindrical body are the same, rivet joints of the same size can be used. The release column 73 adopts a split structure, which can reduce raw material costs and processing volume, thereby reducing the overall production cost of the brake 1.

[0042] Of course, in other embodiments, the release column 73 can be an integral structure, that is, the first limiting step 731 and the columnar body of the release column 73 are formed as one piece.

[0043] Please see Figure 8 In some embodiments, a plurality of second notches 7311 are provided at the contact points between the first limiting step 731 and the second riveting part 734, and the second riveting part 734 is embedded in the plurality of second notches 7311. Specifically, the first limiting step 731 may be provided with one or more second notches 7311. During the riveting process, the second riveting part 734 deforms and fills into the second notches 7311, so that the second riveting part 734 is embedded in the second notches 7311. This can prevent relative rotation between the first limiting step 731 and the columnar body and ensure the installation reliability of the first limiting step 731.

[0044] Please see Figure 8 In some embodiments, the first limiting step 731 has a second central hole fitted onto the cylindrical body, and a second chamfer 7312 is provided on the edge of the hole wall near the second riveting part 734. The first limiting step 731 is fitted onto the outer periphery of the cylindrical body through the second central hole. The second chamfer 7312 can be an angled corner or a rounded corner, which can increase the contact area between the second riveting part 734 and the first limiting step 731, and facilitate the deformation of the second riveting part 734 during the riveting process, reducing physical obstruction during the riveting process.

[0045] Of course, in other embodiments, the first limiting step 731 may not have the second chamfer 7312, and there are no specific restrictions on this.

[0046] In some embodiments, the handle 71 has a third central hole sleeved on the outer periphery of the release post 73. The third central hole and the outer periphery of the release post 73 are in clearance fit, allowing the handle 71 to rotate relative to the release post 73. That is, the third central hole and the outer periphery of the release post 73 are not in tight fit. When the handle 71 rotates, the release post 73 does not need to rotate with the handle 71, ensuring the reliability between the first elastic member 60 and the first limiting step 731, preventing the first elastic member 60 from getting stuck between the first limiting step 731 due to the rotation of the release post 73, thereby improving the service life of the first elastic member 60.

[0047] In addition, please see Figure 1The manual release assembly 70 also includes a limiting post 76. The handle 71 has a strip-shaped limiting hole, and the limiting post 76 is connected to the housing 10 and extends out of the strip-shaped limiting hole. When the handle 71 is rotated, it abuts against one end of the strip-shaped limiting hole. The limiting post 76 is used to limit the rotation angle of the handle 71. Since the limiting post 76 is connected to the housing 10 to maintain a stationary position, when the handle 71 is rotated to the target angle, the limiting post 76 abuts against one end of the strip-shaped limiting hole, preventing the handle 71 from rotating further.

[0048] For example, the housing 10 has a first positioning hole and a second positioning hole, and a limiting post 76 is selectively located in either the first or second positioning hole. The first and second positioning holes correspond to the two ends of the strip-shaped limiting hole, respectively. When it is necessary to rotate the handle 71 clockwise to limit the rotation angle, the limiting post 76 is located in the first positioning hole; when it is necessary to rotate the handle 71 counterclockwise to limit the rotation angle, the limiting post 76 is located in the second positioning hole, to accommodate more installation environments. Of course, the housing 10 may also have only one positioning hole, suitable for installation environments where the handle 71 rotates in only one direction.

[0049] Please see Figure 1 The brake 1 also includes a micro switch 80 located on the outer periphery of the housing 10. The micro switch 80 is connected in series with the coil 50, or in parallel with the coil 50, or configured to be connected to the controller. The handle 71 can trigger the micro switch 80 during rotation. By setting the micro switch 80, the handle 71 can transmit a state signal indicating that the friction disc 30 is released or pressed when rotated. As mentioned above, the handle 71 can be rotated clockwise to trigger the micro switch 80, or it can be rotated counterclockwise. The direction of rotation and the position of the limit post 76 mainly depend on the set triggering method.

[0050] Specifically, the micro switch 80 can be connected in series with the coil 50, in which case the micro switch 80 can control the energization and de-energization of the coil 50; the micro switch 80 can also be connected in parallel with the coil 50, in which case the micro switch 80 can adjust the current signal of the coil 50; the micro switch 80 can also be connected to the controller instead of the coil 50, and after being triggered by the handle 71, it can provide the controller with a signal of the current posture of the handle 71, so that the controller can determine and control the opening and closing of the micro switch 80.

[0051] It is understandable that the handle 71 can be configured to indicate that the friction disc 30 is in a released state when the micro switch 80 is triggered, and that the friction disc 30 is in a pressed state when the handle 71 is removed from the micro switch 80; alternatively, the handle 71 can be configured to indicate that the friction disc 30 is in a pressed state when the micro switch 80 is triggered, and that the friction disc 30 is in a released state when the handle 71 is removed from the micro switch 80. The triggering method depends primarily on the initial position of the handle 71.

[0052] 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.

[0053] 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; An armature is disposed adjacent to the housing; A friction disc is disposed adjacent to the armature; The tail plate is disposed adjacent to the friction disc and is connected to the housing via an assembly. The coil is disposed inside the housing and is oriented toward the armature; A first elastic element is disposed inside the housing and is oriented toward the armature; as well as A manual release assembly is located at the end of the housing opposite to the armature, and includes a handle, a ball, a release pin, and an end cap; The housing has a first limiting groove, the handle has a second limiting groove, the ball is disposed in the first limiting groove and has a first posture in the second limiting groove and a second posture outside the second limiting groove; the release post is disposed through the housing and has a first limiting step that abuts against the first elastic member. The end cap is fitted around the outer periphery of the release post and abuts against the end of the handle away from the housing. The end of the release post away from the armature has a first riveting part. Before installation, the first riveting part can pass through the first central hole of the end cap and protrude from the end cap. After installation, the first riveting part deforms and abuts against the end of the end cap away from the handle. When the coil is energized, it generates a magnetic field, causing the armature to move towards the housing against the elastic force of the first elastic element. When the coil is not energized and the handle is not rotated, the ball is located in the second limiting groove, the first elastic element is in close contact with the first limiting step, the first limiting step abuts against the armature, and the armature presses against the friction disc. When the handle is rotated, the ball is located outside the second limiting groove, the handle is lifted by the ball, the handle moves the end cap and the release post away from the armature, the first elastic element is squeezed by the first limiting step, and the friction disc is released.

2. The brake according to claim 1, characterized in that, The manual release assembly further includes a second elastic element located between the end cap and the handle.

3. The brake according to claim 2, characterized in that, The end cap has a receiving groove, the second elastic member is disposed in the receiving groove, and the second elastic member has an orientation that extends out of the receiving groove and abuts against the handle.

4. The brake according to claim 1, characterized in that, The end cap has several first notches at the point where it contacts the first riveting part, and the first riveting part is embedded in several of the first notches.

5. The brake according to claim 1, characterized in that, The first central hole has a first chamfer at the edge of the hole wall near the first riveting part.

6. The brake according to claim 1, characterized in that, The release column has a second limiting step, and the end cap abuts against the second limiting step in the axial direction. The release column has a hollow structure.

7. The brake according to claim 1, characterized in that, The release column has a columnar body, the first limiting step is an annular body sleeved on the columnar body, and the other end of the columnar body away from the first riveting part has a second riveting part that abuts against the first limiting step.

8. The brake according to claim 7, characterized in that, The first limiting step has several second notches at the point where it contacts the second riveting part, and the second riveting part is embedded in several second notches.

9. The brake according to claim 7, characterized in that, The first limiting step has a second central hole fitted onto the columnar body, and the second central hole has a second chamfer at the edge of the hole wall near the second riveting part.

10. The brake according to claim 1, characterized in that, The handle has a third central hole fitted around the outer periphery of the release post, and the third central hole and the outer periphery of the release post are in clearance fit, and the handle can rotate relative to the release post.

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