Brake execution device, electromechanical brake and equipment

Abstract

The utility model relates to a brake execution device, an electromechanical brake and equipment. The brake execution device comprises a support, a brake part and a brake part, wherein the support is provided with a first channel, a second channel and the brake part; the main body is provided with a first mounting hole and a second mounting hole which are used for mounting the first guide pin and the second guide pin respectively, and the first guide pin and the second guide pin are further inserted into the first channel and the second channel respectively, so that the main body is mounted to the bracket in a sliding manner; when the main body moves to a preset position relative to the bracket, the braking part and a matching part positioned on external equipment are promoted to operate in a matched manner so as to brake the equipment; a protruding part is arranged between the first end and the second end of the first guide pin and arranged to abut against the first side of the first installation hole, and the first end is fixed in place on the second side of the first installation hole. And / or a contact part is arranged between the first end and the second end of the second guide pin, and line contact or surface contact is formed when the contact part is in contact with the bracket.

Description

Technical Field

[0001] The present disclosure relates to the technical field of brake devices, and more particularly, to a brake actuator, an electromechanical brake, and equipment. Background Art

[0002] Electronic Mechanical Brake (EMB) uses motor drive to replace traditional hydraulic or pneumatic drive to operate the brake. It directly converts electrical energy into mechanical energy, which not only improves response speed and braking efficiency, but also simplifies the structure and reduces the difficulty of system assembly and maintenance. Therefore, it has become the development trend of the braking system.

[0003] Generally speaking, an electromechanical brake may include a brake body and a friction pad support. The brake body is axially mounted to the friction pad support using guide pins. When braking is required, the brake body moves relative to the friction pad support, causing the friction pads mounted on the friction pad support to engage with a corresponding component (such as a brake disc mounted on a wheel), thereby providing braking force. In existing electromechanical brakes, a screw hole is typically provided at one end of the guide pin, which is then attached to the brake body using bolts. Utility Model Content

[0004] In view of this, the present disclosure provides a brake actuator, an electromechanical brake, and an apparatus, which can solve or at least alleviate one or more of the problems existing in the prior art and other problems, or can provide an alternative technical solution to the prior art.

[0005] According to one aspect of the present disclosure, a brake actuator is provided, which is used for an electromechanical brake and includes:

[0006] a bracket provided with a first channel, a second channel, and a braking portion; and

[0007] a brake body, the brake body being provided with a first mounting hole and a second mounting hole for mounting a first guide pin and a second guide pin, respectively; the first guide pin and the second guide pin being further inserted into the first channel and the second channel, respectively, so that the brake body can be slidably mounted to the bracket; when the brake body moves to a preset position relative to the bracket, the brake portion cooperates with a matching portion on an external device to brake the device;

[0008] wherein a protrusion is provided between the first end and the second end of the first guide pin, the protrusion being arranged to abut against a first side of the first mounting hole, and the first end being fixed in place on the second side of the first mounting hole; and / or

[0009] A contact portion is provided between the first end and the second end of the second guide pin, and when the contact portion contacts the bracket, line contact or surface contact is formed.

[0010] In the brake actuator according to the present disclosure, optionally, the first end of the first guide pin has a portion extending beyond the second side of the first mounting hole, and the portion is molded so that the first end of the first guide pin is fixed in place on the second side of the first mounting hole; and / or

[0011] When the first channel is configured to penetrate on both sides, the first guide pin is arranged to extend through the first side and the second side of the first channel, and a sleeve is provided on the first side and / or the second side of the first channel to at least partially close the opening of the first channel.

[0012] In the brake actuator according to the present disclosure, optionally, the portion is riveted to the second side of the first mounting hole, and / or a portion of the kit is installed in the first channel and / or is sleeved on the first guide pin.

[0013] In the brake execution device according to the present disclosure, optionally, the second guide pin is a reverse pin, and / or an intermediate piece is provided between the bracket and the contact portion, and the intermediate piece is mounted on the second guide pin and forms line contact or surface contact when in contact with the contact portion.

[0014] In the brake actuator according to the present disclosure, optionally, the intermediate member includes a collar or a reinforcing washer, the collar having an engagement portion arranged along the circumferential direction for engaging with the cover member, the cover member is further arranged to engage with a side of the second mounting hole facing the bracket, and / or the reinforcing washer is configured to elastically deform when abutting against the bracket and the contact portion to generate a reaction force applied to the bracket and the contact portion; and / or

[0015] The second guide pin is provided with an assembly portion for mounting the cover member, and the assembly portion includes a groove and a step.

[0016] In the brake actuator according to the present disclosure, optionally, the reinforcing washer is configured to have a first part and / or a second part, and after the reinforcing washer is installed in place, the first part protrudes along the axial direction of the second guide pin toward the contact portion, the second part protrudes along the axial direction toward the bracket, and the first part is close to the center of the reinforcing washer relative to the second part.

[0017] In the braking execution device according to the present disclosure, optionally, the contact portion is configured to have a protruding structure, which protrudes along the axial direction of the second guide pin toward the bracket and generates a reaction force when it abuts against the second side of the second channel or the middle piece. The middle piece is mounted on the second guide pin and forms line contact or surface contact when it contacts the protruding structure.

[0018] In the brake execution device according to the present disclosure, optionally, the protruding structure is configured to have an inclined surface, and when the protruding structure abuts against the second side of the second channel or the middle piece, there is a gap between a portion of the inclined surface and the second side of the second channel or the middle piece.

[0019] In the braking execution device according to the present disclosure, optionally, the first guide pin and the second guide pin are arranged in parallel, the braking portion includes a first friction plate and a second friction plate, the first friction plate and the second friction plate are opposite to each other along the axial direction of the first guide pin and are arranged between the first guide pin and the second guide pin, and the matching portion includes a brake disc, and the brake disc is arranged between the first friction plate and the second friction plate.

[0020] Secondly, according to another aspect of the present disclosure, an electronic mechanical brake is provided, which includes the brake execution device according to any one of the above items.

[0021] In addition, according to yet another aspect of the present disclosure, a device is further provided, wherein the device is configured with one or more brake execution devices according to any one of the above items, or is configured with one or more electromechanical brakes according to the above items.

[0022] The adoption of the disclosed solution can effectively improve the working performance of the electronic mechanical brake, especially significantly improve the mechanical properties of the guide pin, reduce the contact stress between the guide pin and the bracket channel, and increase the service life of the guide pin and related components, thereby helping to enhance the reliability of the electronic mechanical brake and improve product quality and competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG2 is a schematic diagram of the exploded structure of an embodiment of an electromechanical brake according to the present disclosure when assembled to a vehicle wheel hub.

[0024] Figure 2 yes Figure 1 A three-dimensional structural diagram of an embodiment of an electromechanical brake is shown.

[0025] Figure 3 1 is a side structural schematic diagram of another electromechanical brake embodiment according to the present disclosure.

[0026] Figure 4 yes Figure 3 The cross-sectional view of the embodiment of the electromechanical brake along the AA direction is shown.

[0027] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B in the middle.

[0028] Figure 6 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0029] Figure 7 yes Figure 6 A partial enlarged schematic diagram of part B in the middle.

[0030] Figure 8 yes Figure 6 A schematic perspective structural diagram of an example of a reinforcing washer in an embodiment of an electromechanical brake is shown.

[0031] Figure 9 yes Figure 8 A side cross-sectional structural diagram of an example of a reinforcing gasket is shown.

[0032] Figure 10 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0033] Figure 11 yes Figure 10 A partial enlarged schematic diagram of part B in the middle.

[0034] Figure 12 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0035] Figure 13 yes Figure 12 A partial enlarged schematic diagram of part B in the middle.

[0036] Figure 14 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3The same cross-sectional diagram along the AA direction is shown in FIG.

[0037] Figure 15 yes Figure 14 A partial enlarged schematic diagram of part B in the middle.

[0038] Figure 16 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0039] Figure 17 yes Figure 16 A partial enlarged schematic diagram of part B in the middle.

[0040] Figure 18 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0041] Figure 19 yes Figure 18 A partial enlarged schematic diagram of part B in the middle.

[0042] Figure 20 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0043] Figure 21 yes Figure 20 A partial enlarged schematic diagram of part B in the middle.

[0044] Figure 22 Another embodiment of an electromechanical brake according to the present disclosure is along the lines of Figure 3 The same cross-sectional diagram along the AA direction is shown in FIG.

[0045] Figure 23 yes Figure 22 A partial enlarged schematic diagram of part B in the middle. DETAILED DESCRIPTION

[0046] First of all, it should be noted that the structure, composition, characteristics and advantages of the brake actuator, electronic mechanical brake and equipment according to the present disclosure will be described below in an illustrative manner. However, all descriptions should not be used to form any limitations on the present disclosure.

[0047] In this document, the technical terms "first" and "second" are used only for distinguishing purposes and are not intended to indicate their order and relative importance. The technical terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom" and their derivatives should be used in conjunction with, for example Figure 4Structures oriented in the drawing may adopt a variety of alternative orientations unless explicitly indicated otherwise. The technical term "connected (or connected, etc.)" encompasses direct connection of a particular component to another component and / or indirect connection to another component. In addition, to simplify the drawings, the same or similar components and features may be labeled in only one or more locations in the same drawing.

[0048] refer to Figure 1 , the figure only illustrates the general situation of assembling an electromechanical brake embodiment according to the present disclosure to a vehicle wheel hub in an exemplary manner. Figure 1 The exploded view of FIG2 shows the electromechanical brake 100, the rotating shaft 10, the steering knuckle arm 20, the bearing 30, the shock absorber 40, the brake disc 50, and the wheel 60. During assembly, the electromechanical brake 100 can be installed on the steering knuckle arm 20, and the steering knuckle arm 20, the rotating shaft 10, the bearing 30, the shock absorber 40, and the brake disc 50 can be assembled together and arranged in the space inside the wheel hub of the wheel 60. When the vehicle needs to be braked, the electromechanical brake 100 can provide motor power to drive the brake portion therein to clamp the brake disc 50, thereby stopping the wheel 60 from rotating and achieving vehicle braking.

[0049] It should be pointed out that Figure 1 The application scenarios shown are for illustrative purposes only. The electronic mechanical brake and its brake actuator have a very wide range of applications and can be configured and applied to many types of equipment to implement braking operation functions. Such equipment may include but is not limited to vehicles, wheeled walking robots, electric wheelchairs, unmanned aerial vehicles, etc. The present disclosure does not impose any restrictions on specific equipment types.

[0050] exist Figure 2 The figure shows a schematic diagram of the three-dimensional structure of an embodiment of an electromechanical brake. The electromechanical brake 100 includes a brake actuator 100a and a control device 100b. The brake actuator 100a and the control device 100b can be manufactured, used, and sold separately, or they can be assembled and used together using a detachable connection. The control device 100b controls the operation of the brake actuator 100a. The control device 100b can connect to a motor and control the motor power output of the electromechanical brake 100. The specific model, power, and quantity of the motor can be flexibly configured based on application requirements.

[0051] The brake actuator 100a may include a bracket 11 and a body 12. The bracket 11 is used to mount the electromechanical brake on a device, for example, Figure 2 and Figure 3The figure shows an exemplary connection structure 140 (such as a mounting hole for bolt connection, etc.) that can be used for the above operation. On the other hand, it is used to be connected to the main body 12 in an axially slidable manner, for example, through a guide pin. As adopted herein, in one or some embodiments, a first channel 111 and a second channel 112 can be provided on the bracket 11 to respectively cooperate with a first guide pin 123 and a second guide pin 124 mounted on the main body 12. In addition, a braking portion 113 is also provided on the bracket 11 to cooperate with a corresponding matching portion located on the device to implement a braking operation. As an example, for example Figure 4 As shown in the examples given in this article, the braking portion 113 is specifically constructed to have two left and right opposing friction plates, and the matching portion (such as a brake disc, etc.) corresponding to the braking portion 113 is arranged between the two friction plates. In this way, when the equipment needs to be braked, the two friction plates can be urged to move toward the matching portion and engage with it, thereby forming a braking force and applying it to the equipment to brake it.

[0052] Regarding the specific feasible structure of the main body 12 of the brake actuator, its working method with the matching part, etc., reference may be made to the Chinese invention patent application number CN202311403157.4 and entitled "Electronic Mechanical Brake" and the Chinese utility model patent application number CN202422384844.2 and entitled "Electronic Mechanical Brake," the entire contents of which are incorporated herein by reference. Furthermore, it should be noted that the brake actuator and the brake coordination operation between the electronic mechanical brake and equipment such as a vehicle should not be limited to the friction plate and brake disc forms mentioned above as examples. The present disclosure allows for many feasible implementations.

[0053] Combined with reference Figures 3 to 5 These figures illustrate a specific embodiment of the present electromechanical brake, showing the configuration of an example brake actuator. In this example electromechanical brake, a first mounting hole 121 and a second mounting hole 122 can be provided on the main body 12 of the example brake actuator. These first and second guide pins 123 and 124 can be mounted therethrough, respectively. These two guide pins can be arranged parallel to each other and inserted into the first and second channels 111 and 112 of the bracket 11, respectively. Figure 4As shown, the second guide pin 124 can be positioned above the first guide pin 123. A brake portion 113, for example, in the form of two friction plates, can be mounted on the bracket 11 and positioned within the space between the first guide pin 123 and the second guide pin 124. When driven by the motor, the main body 12 can slide relative to the bracket 11 along the axial direction of the first and second guide pins 123, 124. Upon reaching a predetermined position, the brake portion 113 can engage a mating portion provided on an external device. For example, as described above, the two friction plates can clamp a brake disc mounted on a wheel, thereby braking the device.

[0054] More specifically, the first guide pin 123 can be directly mounted to the first mounting hole 121 of the main body 12 without the need for other components such as bolts for mounting and connecting. Figure 4 As shown in FIG. 1 , the first end 123a of the first guide pin 123 can be directly mounted and fixed in place on the second side 121b of the first mounting hole 121. For example, the first end 123a of the first guide pin 123 can be configured to have a portion 123c extending from the second side 121b of the first mounting hole 121. The extended portion 123c can then be processed and fixed in place using any feasible process such as riveting, stamping, welding, etc.

[0055] In addition, a protrusion 125 can be provided on the first guide pin 123, and the protrusion 125 can be arranged at any suitable position between the first end 123a and the second end 123b of the first guide pin 123. For example, a flange structure can be formed on the guide pin by machining to serve as the protrusion 125, so that after assembly is completed, the protrusion 125 can be abutted against the first side 121a of the first mounting hole 121, and then combined with the first end 123a to be installed and fixed on the second side 121b of the first mounting hole 121, so that the first guide pin 123 can be more firmly and reliably installed to the first mounting hole 121 of the main body 12.

[0056] By adopting the above configuration disclosed herein, first guide pin 123 can be installed without the need for bolt holes, as is commonly required in the prior art, which are then connected to the guide pin using bolts and then mounted to the mounting holes of the main body of the brake actuator. This effectively ensures the overall mechanical performance of the guide pin and, in particular, avoids the undesirable fatigue damage and breakage that can occur with the prior art bolts under conditions of long-term use or heavy loads, which can seriously affect the safe use of the device. The disclosed solution successfully resolves the above-mentioned issues, which is beneficial for ensuring and improving the performance of the guide pin in the brake actuator and electromechanical brake, extending the service life of the guide pin and associated components, and ensuring system safety.

[0057] For the second guide pin 124, it can adopt any suitable form such as a reverse pin and its first end 124a can be directly installed and fixed to the second mounting hole 122 of the main body 12, thereby avoiding the traditional installation method of using bolts to connect the guide pins for fixing, thereby achieving the good technical effect as described above.

[0058] like Figure 4 and Figure 5 As shown, a contact portion 126 can be provided on the second guide pin 124, and the contact portion 126 can achieve surface contact with the bracket 11. For example, the second guide pin 124 can be configured in the form of a stepped shaft, so that the second end 124b of the second guide pin 124, which can be inserted into the second channel 112, has a relatively smaller diameter than the first end 124a, and the contact portion 126 is provided at a stepped position between the first end 124a and the second end 124b and has a planar structure facing the bracket 11. In this way, when the contact portion 126 directly contacts the bracket 11, surface contact can be achieved, thereby increasing the contact area and reducing the impact of the contact.

[0059] The following reference Figures 6 to 23 , through these drawings, more specific embodiments of the present electronic mechanical brake are shown, wherein correspondingly multiple examples of brake execution devices are shown. Unless otherwise specified, the structural configurations in these embodiments can be the same as those discussed above. Figure 4 The corresponding structural configurations of the embodiments are the same or similar.

[0060] exist Figure 6 and Figure 7It is specifically shown that different configurations can be adopted at the second guide pin 124. With reference to these two figures, one or more reinforcing washers 132 can be added between the bracket 11 and the contact portion 126. The reinforcing washers 132 can be used to generate a reaction force by elastic deformation when abutting against the bracket 11 and the contact portion 126, and the generated reaction force can be applied to the bracket 11 and the contact portion 126. In this way, not only can the fatigue performance of the second guide pin be effectively improved, but also the above components can be promoted to form a tighter and more effective contact fit, so that when the main body 12 moves relative to the bracket 11, it can more smoothly and reliably promote the braking portion 113 and the corresponding matching portion to cooperate, thereby facilitating the technical effect of achieving smooth braking of the equipment.

[0061] As an example, in Figure 8 and Figure 9 A feasible implementation of the reinforcing washer 132 is provided in the figure. For example, the reinforcing washer 132 may be optionally configured to have a first portion 132a and a second portion 132b. After the reinforcing washer 132 is installed, the first portion 132a may protrude along the axial direction of the second guide pin 124 toward the contact portion 126, and the second portion 132b may protrude along the axial direction of the second guide pin 124 toward the bracket 11. This allows the reinforcing washer 132 to have a non-planar outer profile on both sides relative to the longitudinal center plane. This will cause it to be subjected to contact forces at different locations on one side of the bracket 11 and on the other side of the bracket 11. This can cause the reinforcing washer 132 to be elastically deformed under the action of different contact pressures from the left and right sides, thereby providing a reaction force to be applied to the bracket 11 and the contact portion 126.

[0062] In addition, as an optional configuration, the contact portion 126 on the second guide pin 124 can also be configured to form a line contact with the reinforcing washer 132. For example, the contact portion 126 can be constructed to have a protruding structure protruding toward the bracket 11 along the axial direction of the second guide pin 124. When the protruding structure comes into contact with the reinforcing washer 132, a line contact is formed and a reaction force is provided. Figure 7The figure mark 129 has been used to indicate a protruding structure that can be specifically implemented. At this time, the radial end 126a at the stepped position on the second guide pin 124 is set to protrude toward the bracket 11 relative to the root 126b, for example, to form a structure such as an inclined surface with an inclination angle, so that the radial end 126a can be used to act as the above-mentioned protruding structure. In this way, during use, the second guide pin 124 may be damaged or broken in the above area due to stress concentration caused by the root 126b area being subjected to force. Therefore, the force layout of the second guide pin 124 is optimized, which can not only effectively extend the service life of the guide pin, but also promote the system to work more stably and reliably.

[0063] With the above Figure 7 and Figure 8 Compared to the electromechanical brake embodiment shown, Figure 10 and Figure 11 Another implementation of the present electronic mechanical brake is further provided in the specification. The reinforcing washer 132 can be configured to form a surface contact with the contact portion 126 on the side facing the main body 12 of the brake actuator 100a. That is, the corresponding contact areas between the reinforcing washer 132 and the contact portion 126 can be configured as planes, while the reinforcing washer 132 can form a line contact with the bracket 11 on the side facing the bracket 11. This can be achieved by configuring the contact portion of the reinforcing washer 132 on this side to have a structure that protrudes toward the contact area. For example, only the second portion 132b can be selectively provided on the reinforcing washer 132, as previously described. Figure 9 Similarly, in one or some embodiments, only the first portion 132 a may be provided on the reinforcing washer 132 , so as to achieve a linear contact effect when the reinforcing washer 132 contacts one side of the main body 12 .

[0064] Continue to refer Figure 12 and Figure 13 An embodiment of an electronic mechanical brake is shown, in which the first channel 111 and the first guide pin 123 in the brake actuator example are configured differently from the above embodiments. As shown in the figure, the first channel 111 can be set to form a channel that passes through both the first side 111a and the second side 111b. During installation, the first guide pin 123 can pass through the first side 111a and the second side 111b, and its second end 123b can be extended out of the first side 111a. A kit 127 can be provided at the first side 111a of the first channel 111. For example, it can be made of one or more suitable materials such as rubber, plastic, etc., so as to achieve beneficial effects such as shock absorption, waterproofing, and dustproofing. As an optional configuration, a part of the kit 127 can be installed and arranged in the first channel 111. In addition, as another feasible configuration, in Figure 16 and Figure 17 In the embodiment shown, the kit 127 can also be mounted on the second end 123b of the first guide pin 123 extending from the first side 111a, which can also bring good technical effects such as shock absorption, waterproofing, and dustproofing, and can also help improve the pin end strength.

[0065] Compared with other embodiments discussed previously, the above structural configuration can not only increase the length of the first guide pin 123, thereby increasing the support length of the first channel 111 for the first guide pin 123, thereby reducing the contact stress between them, but also because the first guide pin 123 can always maintain an unchanged length in the first channel 111 during use, this is also beneficial for the first guide pin 123 and the first channel 111 to continue to maintain the same or basically the same uniform force conditions during their service life, thereby improving the mechanical properties of the guide pin (such as fatigue strength, etc.) and extending the service life.

[0066] Need to explain, in Figure 14-15 and Figure 16-17 In the respective embodiments of the electromechanical brake, the first guide pin 123 and the first channel 111 in the brake actuator example can be used in the same manner as Figure 12 and Figure 13 The same or similar configuration as shown in the embodiment; Figure 14-15 and Figure 16-17 The second guide pin 124 in the illustrated embodiment may be provided with a protruding structure 129 thereon to serve as the contact portion 126, so as to form a line contact or a surface contact with the reinforcing washer 132. As an example, the protruding structure 129 may be optionally configured at a suitable position at a certain distance from the root of the stepped position of the second guide pin 124, thereby avoiding the problem of undesirable stress concentration in the root area after contact force is applied. In this way, a recessed structure may be formed in the root area. Figure 15 and Figure 17 This has been indicated by the reference numeral 130. The above-mentioned recessed structure can prevent the root area from being subjected to contact force. The specific configuration, size and other aspects of such recessed structure can be set as needed.

[0067] Further, in Figures 19 to 23 More different embodiments of the brake actuator and the electromechanical brake disclosed herein are also shown. In these embodiments, the reinforcing washer 132 can be removed, that is, the contact portion 126 of the second guide pin 124 is allowed to directly contact the bracket 11, for example, forming surface contact or line contact when the two contact. As an example, in Figure 19 、 Figure 21 and Figure 23It has been shown by way of example that the contact portion 126 can be constructed to have an inclined surface S, the top of which will form a protruding structure for making linear contact with the bracket 11, while the remaining portion of the inclined surface S (such as the bottom, etc.) will maintain a gap with the bracket 11 without making contact, which can make the contact force area away from the root at the stepped position, and the root area can also be optionally constructed as a recessed structure 130.

[0068] The above has been combined Figures 2 to 23 The embodiments shown provide a detailed description of the basic structure and configuration variations of the brake actuator and electronic mechanical brake of the present disclosure. It should be understood that for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the accompanying drawings, those skilled in the art may continue to make any combination, addition or deletion between these technical features (or their equivalents). Therefore, these more embodiments according to the present disclosure are also within the scope of the description herein.

[0069] For example, in one or more embodiments, the contact portion 126 having the inclined surface S may be configured to make line contact or surface contact with the reinforcing washer 132, or a collar may be arranged between the bracket 11 and the second guide pin 124 to replace the reinforcing washer 132. Figure 2 Such a collar has been exemplarily shown in FIG using reference numeral 131 .

[0070] In addition, one or more cover members 128 may be arranged at appropriate positions in the brake actuator of the electronic mechanical brake according to actual application needs, such as at both sides of the first channel 111, between the second channel 112 and the first side 122a of the second mounting hole 122, etc. This can be achieved by providing an adapting structure (such as a groove, a protrusion, etc.) on the circumferential outer wall of the second guide pin 124, the outer wall of the bracket 11 and / or the main body 12, the circumferential outer wall of the collar 131, the inner wall of the end of the first channel 111 and / or the second channel 112, etc. for matching installation with the cover member 128. For example, Figure 19 As shown, the left side portion of the cover member 128 can be first installed in the corresponding groove on the outer wall of the bracket 11. Then, when the main body 12 and the bracket 11 are assembled together, the left side portion of the second guide pin 124 installed on the main body 12 can be inserted into the second channel 112, and then the right side portion of the cover member 128 can be installed in the corresponding groove on the outer wall of the main body 12, so that the cover member 128 is installed in place at the above position.

[0071] For example, Figure 20 and Figure 21 Another form of second guide pin 124 is shown, Figure 19Compared with the second guide pin shown, a step 124c is added radially outward of the contact portion 126 having the inclined surface S and axially close to the bracket 11, and the outer diameter of the step 124c is smaller than the second guide pin flange; after the second guide pin 124 is installed in the second channel 112, the step 124c and the side of the first channel 112 facing the second mounting hole 122 together define an annular groove, and the annular groove is used to install the cover part 128.

[0072] For example, Figure 22 and Figure 23 Another form of second guide pin 124 is shown, Figure 21 Compared with the second guide pin shown, an annular groove 124d is additionally provided at the outer side of the flange of the second guide pin 124. After the second guide pin 124 is installed in the second channel 112, the annular groove 124d is used to install the cover part 128.

[0073] The cover 128 can be made of one or more suitable materials, such as rubber or plastic, as needed. By configuring one or more covers 128 on the brake actuator of the electromechanical brake, the brake actuator and its components can be protected by providing shock absorption, waterproofing, and dustproofing.

[0074] Based on the disclosure herein, it can be understood that the brake actuator and electromechanical brake disclosed herein can be selectively configured to meet the specific requirements of different applications, resulting in numerous possible implementations and, therefore, widespread application in braking operations across a wide range of equipment types. The disclosed brake actuator and electromechanical brake can, in particular, effectively improve the performance of guide pins within these devices, extending the service life of the guide pins and related components, and enhancing the product quality and competitiveness of the electromechanical brake.

[0075] The above descriptions of the brake actuator, electromechanical brake, and apparatus according to the present disclosure are provided by way of example only. These examples are intended solely to illustrate the principles and implementation methods of the present disclosure and are not intended to limit the present disclosure. Those skilled in the art may readily make various modifications and improvements without departing from the scope of the present disclosure. Therefore, all equivalent technical solutions are intended to fall within the scope of the present disclosure and are defined by the claims of the present disclosure.

Claims

1. A brake actuator for an electromechanical brake (100), characterized in that: include: a bracket (11) provided with a first channel (111), a second channel (112) and a braking portion (113); and The main body (12) is provided with a first mounting hole (121) and a second mounting hole (122) for respectively mounting a first guide pin (123) and a second guide pin (124); the first guide pin (123) and the second guide pin (124) are further inserted into the first channel (111) and the second channel (112), respectively, so that the main body (12) can be slidably mounted to the bracket (11); when the main body (12) moves to a preset position relative to the bracket (11), the braking portion (113) is caused to cooperate with a matching portion on an external device to brake the device; wherein a protrusion (125) is provided between the first end and the second end of the first guide pin (123), the protrusion (125) being arranged to abut against the first side of the first mounting hole (121), and the first end being fixed in place on the second side of the first mounting hole (121); and / or A contact portion (126) is provided between the first end and the second end of the second guide pin (124), and the contact portion (126) forms line contact or surface contact with the bracket (11) when in contact.

2. The brake actuator according to claim 1, wherein: The first end of the first guide pin (123) has a portion extending out of the second side of the first mounting hole (121), and the portion is molded so that the first end of the first guide pin (123) is fixed in place on the second side of the first mounting hole (121); and / or When the first channel (111) is configured to penetrate on both sides, the first guide pin (123) is arranged to extend through the first side and the second side of the first channel (111), and a sleeve (127) is provided on the first side and / or the second side of the first channel (111) to at least partially close the opening of the first channel (111).

3. The brake actuator according to claim 2, wherein: The portion is riveted to the second side of the first mounting hole (121), and / or a portion of the kit (127) is installed in the first channel (111) and / or is sleeved on the first guide pin (123).

4. The brake actuator according to claim 1, wherein: The second guide pin (124) is a reverse pin, and / or an intermediate piece is provided between the bracket (11) and the contact portion (126), and the intermediate piece is sleeved on the second guide pin (124) and forms line contact or surface contact when in contact with the contact portion (126).

5. The brake actuator according to claim 4, wherein: The intermediate member includes a collar (131) or a reinforcing washer (132), the collar (131) having an engagement portion arranged in a peripheral direction for engaging with the cover member (128), the cover member (128) being further arranged to engage with a side of the second mounting hole (122) facing the bracket (11), and / or the reinforcing washer (132) being configured to elastically deform when in contact with the bracket (11) and the contact portion (126) to generate a reaction force applied to the bracket (11) and the contact portion (126); and / or The second guide pin (124) is provided with an assembly portion for mounting a cover member (128), and the assembly portion includes a groove and a step.

6. The brake actuator according to claim 5, wherein: The reinforcing washer (132) is configured to have a first portion (132a) and / or a second portion (132b). After the reinforcing washer (132) is installed in place, the first portion (132a) protrudes along the axial direction of the second guide pin (124) toward the contact portion (126), the second portion (132b) protrudes along the axial direction of the second guide pin (124) toward the bracket (11), and the first portion (132a) is close to the center of the reinforcing washer (132) relative to the second portion (132b).

7. The brake actuator according to claim 1, wherein: The contact portion (126) is configured to have a protruding structure (129), which protrudes along the axial direction of the second guide pin (124) toward the bracket (11) and generates a reaction force when it abuts against the second side or the middle piece of the second channel (112). The middle piece is mounted on the second guide pin (124) and forms a line contact or a surface contact when it contacts the protruding structure (129).

8. The brake actuator according to claim 7, wherein: The protruding structure (129) is configured to have an inclined surface (S), and when the protruding structure (129) abuts against the second side of the second channel (112) or the middle piece, a gap is formed between a portion of the inclined surface (S) and the second side of the second channel (112) or the middle piece.

9. The brake actuator according to any one of claims 1 to 8, wherein: The first guide pin (123) and the second guide pin (124) are arranged in parallel, the braking portion (113) includes a first friction plate and a second friction plate, the first friction plate and the second friction plate are opposite to each other along the axial direction of the first guide pin (123) and are arranged between the first guide pin (123) and the second guide pin (124), and the matching portion includes a brake disc, which is arranged between the first friction plate and the second friction plate.

10. An electromechanical brake (100), characterized in that The electromechanical brake (100) comprises a brake actuation device according to any one of claims 1 to 9.

11. A device, characterized in that The device is equipped with one or more brake actuation devices according to any one of claims 1 to 9, or one or more electromechanical brakes (100) according to claim 10.

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