Electromechanical brake

Abstract

The utility model provides an electromechanical brake. The electronic mechanical brake comprises a friction plate support, the friction plate support is provided with a first friction plate and a second friction plate which are oppositely arranged in the axial direction, and the friction plate support comprises a first channel and a second channel which are located on the two sides of the first friction plate and the two sides of the second friction plate in the axial direction; and a brake body, the brake body including a first mounting hole and a second mounting hole, a first guide pin and a second guide pin being mounted to the brake body through the first mounting hole and the second mounting hole, respectively, the first guide pin and the second guide pin are inserted into the first channel and the second channel of the friction plate support respectively, so that the brake body can be installed on the friction plate support in an axial sliding mode. And the first guide pin penetrates into the first mounting hole. The electromechanical brake according to the embodiment relieves the stress on the guide pin.

Description

Technical Field

[0001] The present application relates to the field of brake devices, and more particularly, to an electromechanical brake. Background Art

[0002] Electromechanical brakes, which use a motor to drive a caliper, offer advantages over traditional hydraulic brakes, such as faster response, simpler structure, and easier maintenance. As vehicles move toward electrification and intelligent driving, electromechanical brakes are becoming a trend in braking systems due to their easier integration with electric control systems.

[0003] Electromechanical brakes typically consist of a friction plate support and a brake body, which is axially movably suspended from the friction plate support by guide pins. Due to mounting constraints, the guide pins are typically provided with bolt holes for bolting to the brake body. However, since the center of gravity of the brake body is outside the supported friction plate support, the guide pins act like cantilevers, subjecting the bolts attached to them to significant stress. Furthermore, the bolt size is limited by the guide pin's bolt hole.

[0004] On the other hand, the length of the contact section between the guide pin and the channel of the friction plate bracket will change with the movement of the brake body. When the brake body moves away from the supported friction plate bracket, the stress on the guide pin itself will increase. Utility Model Content

[0005] The purpose of this application is to solve or at least alleviate one or more problems existing in the prior art.

[0006] According to one aspect, there is provided an electromechanical brake comprising:

[0007] a friction plate bracket, wherein a first friction plate and a second friction plate are provided on the friction plate bracket in an axially opposed relationship, wherein when the friction plate bracket of the electronic mechanical brake is fixedly mounted to a vehicle, the first friction plate and the second friction plate are respectively located on opposite sides of a brake disc, and the friction plate bracket includes a first channel and a second channel in an axial direction located on either side of the first friction plate and the second friction plate; and

[0008] a brake body, the brake body comprising a first mounting hole and a second mounting hole, a first guide pin and a second guide pin being mounted to the brake body through the first mounting hole and the second mounting hole, respectively, and the first guide pin and the second guide pin being inserted into the first channel and the second channel of the friction plate holder, respectively, so that the brake body can be axially slidably mounted to the friction plate holder;

[0009] Wherein, the first guide pin penetrates into the first mounting hole.

[0010] Optionally, in an embodiment of the electronic mechanical brake, the first guide pin has a first flange, the first flange abuts against the brake body on the outside of the first mounting hole, the first guide pin has an inner end passing through the first mounting hole, the inner end has a first external thread, and a first nut is installed to the first external thread of the first guide pin and abuts against the brake body on the inside of the first mounting hole.

[0011] Optionally, in the embodiment of the electromechanical brake, the inner end of the second guide pin has a second threaded hole, and the second guide pin is mounted to the brake body by a second bolt passing through the second mounting hole and received by the second threaded hole.

[0012] Optionally, in the embodiment of the electromechanical brake, the first mounting hole and the second mounting hole are staggered in the axial direction.

[0013] Optionally, in the embodiment of the electromechanical brake, the first mounting hole has an axial length greater than that of the second mounting hole.

[0014] Optionally, in the embodiment of the electromechanical brake, the first mounting hole is axially further inward than the second mounting hole.

[0015] Optionally, in an embodiment of the electronic mechanical brake, the outer ends of the first channel and / or the second channel are open, and the outer ends of the first guide pin and / or the outer ends of the second guide pin extend out of the first channel and / or the second channel, so that when the brake body slides axially relative to the friction plate bracket, the length of the contact section between the first guide pin and the first channel and / or the second guide pin and the second channel remains unchanged.

[0016] Optionally, in an embodiment of the electromechanical brake, the outer end of the first guide pin and / or the outer end of the second guide pin are mounted into the third mounting hole and / or the fourth mounting hole on the brake body.

[0017] Optionally, in an embodiment of the electromechanical brake, an outer end of the first guide pin and / or an outer end of the second guide pin is wrapped by a sealing sleeve connected to the first channel and / or the second channel.

[0018] Optionally, in the embodiment of the electromechanical brake, the brake body comprises a housing, a main module connected to the housing, and a motor and an electronic control unit connected to the main module.

[0019] Optionally, in an embodiment of the electronic mechanical brake, the first mounting hole and the second mounting hole are arranged on the inner flanges on both sides of the inner end of the cover, the main module includes an active end acting on the first friction plate, and the cover includes an outer end acting on the second friction plate.

[0020] Optionally, in an embodiment of the electronic mechanical brake, the cover is composed of a first cover part and a second cover part assembled along the axial direction, the first cover part defines the first mounting hole and the second mounting hole and is connected to the main module, and the second cover part includes an outer end portion acting on the second friction plate.

[0021] Optionally, in an embodiment of the electronic mechanical brake, at least one of the outer end and the inner end of the first guide pin has an external thread to engage with the internal thread of the corresponding mounting hole, and at least one of the outer end and the inner end of the first guide pin has a torque application portion.

[0022] Optionally, in an embodiment of the electronic mechanical brake, at least one of the outer end and the inner end of the second guide pin has an external thread to engage with the internal thread of the corresponding mounting hole, and at least one of the outer end and the inner end of the second guide pin has a torque application portion.

[0023] The connection between the friction plate support and the brake body in the electromechanical brake according to the embodiment is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The disclosure of this application will be more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the figures represent similar components, where:

[0025] Figure 1 shows an exploded view of an electromechanical brake according to an embodiment when assembled to a wheel hub;

[0026] Figure 2 shows a perspective view of an electromechanical brake according to an embodiment;

[0027] Figure 3 Shown by Figure 2 A longitudinal sectional view of a first guide pin of an electromechanical brake;

[0028] Figure 4 Shown by Figure 2 A cross-sectional view of two guide pins of an electromechanical brake;

[0029] Figure 5 and Figure 6respectively show corresponding cross-sectional views and longitudinal sectional views of an electromechanical brake according to another embodiment;

[0030] Figure 7 shows a perspective view of an electromechanical brake according to another embodiment;

[0031] Figure 8 Shown Figure 7 A cross-sectional view of an electromechanical brake in FIG.

[0032] Figure 9 shows a perspective view of a friction plate bracket according to an embodiment;

[0033] Figure 10 shows a perspective view of an electromechanical brake according to another embodiment;

[0034] Figure 11 Shown Figure 10 Exploded view of the electromechanical brake in;

[0035] Figure 12 Shown Figure 10 End view of the electromechanical brake in FIG;

[0036] Figure 13 and Figure 14 Shown respectively Figure 12 Cross-sectional views of section AA and section BB in FIG;

[0037] Figure 15 shows a cross-sectional view of an electromechanical brake according to another embodiment;

[0038] Figure 16 shows a cross-sectional view of an electromechanical brake according to another embodiment;

[0039] Figure 17 shows a cross-sectional view of an electromechanical brake according to another embodiment;

[0040] Figure 18 shows a cross-sectional view of an electromechanical brake according to another embodiment;

[0041] Figure 19 shows a perspective view of an electromechanical brake according to another embodiment;

[0042] Figure 20 Shown Figure 19 A cross-sectional view of an electromechanical brake in FIG.

[0043] Figure 21 shows a perspective view of an electromechanical brake according to another embodiment; and

[0044] Figure 22Shown Figure 21 Cross-sectional view of the electromechanical brake in Figure 1. DETAILED DESCRIPTION

[0045] Figure 1 The figure shows an installation diagram of an electromechanical brake, which includes a rotating shaft 91, a shock absorber 92, a bearing 94, a steering knuckle arm 93, a brake disc 95, and a wheel 96. The figure also shows an electromechanical brake 100 according to an embodiment, which is driven by a motor to clamp the brake disc 95 with a brake caliper to provide braking force. During assembly, the electromechanical brake 100 is mounted on the steering knuckle arm 93 and is accommodated in a compact space inside the wheel hub of the wheel 96.

[0046] refer to Figures 2 to 4 , which shows an electromechanical brake. The electromechanical brake mainly includes a friction plate bracket 1 and a brake body 2. The friction plate bracket 1 is mounted to a position near the wheel of the vehicle through a pair of through holes 10, such as fixed to the steering knuckle arm 93, so that the clamping opening 101 of the friction plate bracket 1 is aligned with the brake disc 95. Figure 9 , which shows the specific structure of a friction plate holder 1. It includes a holder body and first and second friction plates 71, 72 axially slidable on the holder body. The first and second friction plates 71, 72 are biased by a plurality of elastic members 89, with the space between them corresponding to the clamp 101. The first and second friction plates 71, 72 are located on axially opposite sides of the brake disc 95 and are actuated by the motor-driven brake body 2 to clamp the brake disc 95, thereby achieving braking. The friction plate holder 1 also includes first and second axially arranged channels 11, 12 on either side of the first and second friction plates 71, 72. The brake body is axially slidably mounted to the friction plate holder 1 via the first and second channels 11, 12.

[0047] More specifically, the brake body 2 includes a first mounting hole 211 and a second mounting hole 212, and the first guide pin 31 and the second guide pin 41 are respectively mounted to the brake body 2 through the first mounting hole 211 and the second mounting hole 212, and the first guide pin 31 and the second guide pin 41 are respectively inserted into the first channel 11 and the second channel 12 of the friction plate bracket. More specifically, the first guide pin 31 and the second guide pin 41 respectively include outer ends 311 and 411 away from the brake body 2 and inner ends 312 and 412 close to the brake body 2. Figures 2 to 4In the illustrated embodiment, the inner ends 312 and 412 of the first and second guide pins 31 and 41 have threaded holes, and the first and second bolts 31 and 42 are respectively passed through the first and second mounting holes 211 and 212 of the brake body 2 and received by the corresponding threaded holes in the inner ends 312 and 412 of the first and second guide pins 31 and 41, thereby mounting the first and second guide pins 31 and 41 to the brake body 2. The first and second guide pins 31 and 41 are axially slidable in the first and second channels 11 and 12, thereby allowing the brake body 2 to slide axially relative to the friction pad carrier 1.

[0048] In some embodiments, the brake body 2 primarily comprises: a housing 21 that at least partially covers the friction plate support 1, a main module 23 connected to the housing 21, and a motor 22 and an electronic control unit 24 connected to the main module 23. First mounting holes 211 and second mounting holes 212 may be located on inner flanges 214 on either side of the inner end of the housing 21. For the specific structure of the brake body 2, reference may be made to Chinese invention patent application publication number CN117267280A, entitled "Electromechanical Brake," which is incorporated herein by reference in its entirety.

[0049] For a more concise description, throughout this application, the term "inner" refers to an end of the main module 23 close to the brake body 2 ( Figure 3 The term "outer" refers to the end of the main module 23 away from the brake body 2 ( Figure 3 For example, for the first guide pin 31, the first channel 11, and the cover 21, the inner end is the end closer to the main module 23, and the outer end is the end away from the main module 23. "Both sides" refers to the outer sides of the friction plate, that is, corresponding to Figure 4 The upper and lower sides of the middle friction plates 71, 72. "Axial direction" is used to indicate a direction parallel to the first channel 11 or the guide pin 31.

[0050] refer to Figure 4 To introduce the working mode of the electronic mechanical brake. In operation, the brake body 2 will cause the active end, such as the plunger 25 ( Figure 11 visible) extends to push the first friction plate 71 (corresponding to the brake disc 95) toward the brake disc 95. Figure 4The first friction plate 71 moves to the left). During this process, the brake body 2 does not undergo axial displacement. After the first friction plate 71 contacts the brake disc 95, the first friction plate 71 cannot move further to the left. At this time, the further extension of the plunger 25 will cause the brake body 2 to move to the right as a whole, and the outer end 213 of the cover (for example, in a hook shape) will drive the second friction plate 72 to move to the right until the first friction plate 71 and the second friction plate 72 clamp the brake disc 95 to provide braking. In the above working process, the friction plate bracket 1 is fixedly installed on the vehicle, and the first channel 11 and the second channel 12 therein remain stationary, while the first guide pin 31 and the second guide pin 41 connected to the brake body 2 will move axially (to the right) with the brake body 2. As Figure 3 The figure shows the center of gravity G of the brake body 2, which is located outside the supported friction plate support 1. The brake body 2 is actually suspended from the friction plate support 1 by the first and second guide pins 31 and 41. Therefore, the first and second bolts 32 and 42 are subject to significant stress. Furthermore, the size of the first and second bolts 32 and 42 is limited by the size of the threaded holes at the inner ends of the first and second guide pins 31 and 41. Furthermore, as the brake body 2 shifts rightward, the center of gravity G also shifts rightward, reducing the axial length of the contact sections of the first and second guide pins 31 and 41 with the first and second channels 11 and 12, increasing the stress on the first and second guide pins 31 and 41.

[0051] Continue to refer Figure 5 and Figure 6 , which shows a modified electromechanical brake. In this modification, the first guide pin 31 passes through the first mounting hole 211. In this embodiment, the first guide pin 31 has a first flange 313, the first flange 313 abuts against the outside of the first mounting hole 211, the inner end 312 of the first guide pin 31 passes through the first mounting hole 211, the inner end 312 of the first guide pin 31 has a first external thread 3121, and the first nut 33 is mounted to the first external thread 3121 portion of the first guide pin and abuts against the inside of the first mounting hole 211. By having the first guide pin 31 pass through the first mounting hole 211 and be received by the first nut 33, the size of the bolt used can be adjusted relative to the size of the bolt. Figures 2 to 4 The embodiment shown is larger, thereby better resisting stress. For example, in some embodiments, the bolt size can be increased from M10 to M12. In this embodiment, the inner end of the second guide pin 41 has a second threaded hole. The second guide pin is mounted to the brake body, such as the inner flange 214 at the inner end of the cover 21, by a second bolt 42 that passes through the second mounting hole 212 and is received by the second threaded hole.

[0052] In this embodiment, the first mounting hole 211 and the second mounting hole 212 may be staggered in the axial direction. In this embodiment, the first mounting hole 211 is closer to the inside than the second mounting hole 212, that is, closer to the main module 23 of the brake body 2. When assembling the brake body 2 and the friction plate bracket 1, the first guide pin 31 is fixed to the brake body 2 and inserted into the first channel 11 by engaging its inner end 312 with the first nut 33, and the second guide pin 41 is inserted into the second channel. The brake body 2 is then rotated relative to the friction plate bracket 1 along the axis where the first guide pin is located, so that the cover 21 covers the friction plate bracket 1, and the second bolt 42 is installed when the second mounting hole 212 is aligned with the second threaded hole of the second guide pin 41, thereby completing the assembly. In some embodiments, the first mounting hole 211 has an axial length greater than the second mounting hole 212, thereby providing a larger support area and reducing stress. In addition, in Figure 5 In this embodiment, a sealing sleeve 9 is provided between the guide pin and the corresponding channel to prevent dust, water, or other liquids from entering the channel and affecting sliding. Taking the sealing sleeve for the second channel as an example, the sealing sleeve 9 includes a first connecting portion 91 that penetrates the second channel, a second connecting portion 92 that connects to the inner end of the second guide pin, and a telescoping portion 93 between the first connecting portion 91 and the second connecting portion 92. The provision of telescoping portion 93 allows the sealing sleeve 9 to expand and contract as the guide pin slides. Furthermore, in this embodiment, the outer ends of the first channel 11 and / or the second channel 12 are closed, that is, configured as blind holes.

[0053] Continue to refer Figures 7 to 9 , which shows a modified electronic mechanical brake. The main difference between this embodiment and the previous embodiment is that the outer ends of the first channel 11 and the second channel 12 are open, and the outer ends 311, 411 of the first guide pin 31 and the second guide pin 32 pass through the first channel 11 and the second channel 12, so that when the brake body 2 slides axially relative to the friction plate bracket, the length of the contact section between the first guide pin 31 and the first channel 11, the second guide pin 32 and the second channel 12 remains unchanged, wherein the contact section is the entire length of the first channel 11 and the second channel 12. In other words, when the brake body 2 moves to the right, the outer ends of the first guide pin 31 and the second guide pin 32 will not enter the first channel and the second channel to shorten the contact section. This arrangement maximizes the contact surface between the guide pins and the channels, reducing the stress on the guide pins. In addition, Figure 9 As can be seen, the bracket body of the friction plate bracket 1 includes an outer support portion 151 and an inner support portion 152 separated from the outer support portion 151, and left and right wings 153, 154 connecting the outer support portion 151 and the inner support portion 152 on both sides. The left and right wings 153, 154 respectively define the first channel 11 and the second channel 12.

[0054] In this embodiment, the outer ends 311 and 411 of the first and second guide pins 31 and 41 are mounted into the third and fourth mounting holes 216 and 217 of the brake body. The third and fourth mounting holes 216 and 217 are located, for example, on the outer flange 215 extending from the outer end of the housing 21. An additional sealing sleeve 98 is disposed between the first passage and the third mounting hole, and between the second passage and the fourth mounting hole. Similar to the sealing sleeve 9, the additional sealing sleeve 98 may also have a telescopic portion. In this embodiment, bushings 981 are disposed within the third and fourth mounting holes 216 and 217, and the sealing sleeve 98 is connected between the bushings 981 and the corresponding passage openings. In this embodiment, the outer ends of the first and second guide pins 31 and 41 are configured as cylindrical pins, while the inner ends of the first and second guide pins 31 and 41 are the same as in the previous embodiment. In this embodiment, the friction plate carrier 1 and the brake body 2 are assembled in the same manner as in the previous embodiment, including a rotation step about the first guide pin 31. By supporting the outer ends of the first guide pin 31 and the second guide pin 41 , the support mode of the brake body 2 is changed from suspension to two-point support, further alleviating the stress on the guide pins.

[0055] Continue to refer Figures 10 to 14, which shows a modified electromechanical brake. In this embodiment, the housing 21 includes a first housing portion 201 and a second housing portion 202, which are assembled in an axial direction. For example, the first housing portion 201 and the second housing portion 202 are assembled in an axial direction by a plurality of bolts 203. In some embodiments, the first housing portion 201 defines inner flanges 214 on either side of its inner end. The inner flanges 214 on either side include first mounting holes 211 and second mounting holes 212, respectively. The main module 23 of the brake body is connected to the first housing portion 201, and the plunger 25 of the main module 23 acts on the first friction plate 71. In some embodiments, the second housing portion 202 defines an outer end portion 213 at the outer end of the housing, which acts on the second friction plate 72. The outer flanges 215 on either side of the outer end of the housing are provided with third mounting holes 216 and fourth mounting holes 217, respectively, provided on the outer flanges 215 on either side. After the first and second guide pins are inserted into the first and second channels, respectively, the second housing portion 202 is assembled with the first housing portion 201. The specific assembly method, for example, includes attaching the first and second guide pins 31 and 41 to the first housing portion 201, fitting the first and second channels of the friction plate holder 1 over the first and second guide pins 31 and 41, and finally assembling the second housing portion 202 to the first housing portion 201. This includes inserting the outer ends 311 and 411 of the first and second guide pins 31 and 41 into the third and fourth mounting holes 216 and 217, and installing a plurality of bolts 203. In this embodiment, the first and second guide pins 31 and 41 are installed in the same manner as in the previous embodiment. By dividing the housing into two axially assembled parts, assembly of the electromechanical brake is facilitated. The assembly process no longer involves rotation around the guide pins, and a wider range of guide pin configurations is available.

[0056] Continue to refer Figure 15 , which shows a modification to the previously shown electronic mechanical brake. In this embodiment, the inner end 412 of the second guide pin 41 has a torque applying portion 4122 and an external thread 4121. In this embodiment, the torque applying portion 4122 is in the form of a bolt head, and the bolt head may have an external hexagonal profile, an internal hexagonal profile, a cross or a slotted groove, etc. to receive the torque applied by a specific tool. Correspondingly, the second mounting hole of the inner flange 214 of the cover housing may be provided with an internal thread, so that the second guide pin 41 can be installed by engaging its external thread 4121 with the internal thread of the mounting hole. With this arrangement, the second guide pin 41 is also configured to pass through the second mounting hole, relieving the stress on the second guide pin 41. In some embodiments, the external thread of the second guide pin 41 may also be provided at the outer end 411, and the corresponding fourth mounting hole is then provided with an internal thread.

[0057] Continue to refer Figure 16, which shows a modification of the previously shown electromechanical brake. In this embodiment, the inner end 312 of the first guide pin 31 has a torque-applying portion 3122 and external threads 3121. In this embodiment, the torque-applying portion 3122 is in the form of a bolt head, which may have an external hexagonal profile, an internal hexagonal profile, a cross-shaped groove, or a slotted groove to receive torque applied by a specific tool. The first mounting hole of the inner flange 214 of the housing may be provided with internal threads, allowing the first guide pin 31 to be mounted by engaging its external threads 3121 with the internal threads of the first mounting hole. In some embodiments, the external threads of the first guide pin 31 may also be provided on the outer end 311, in which case the third mounting hole is correspondingly provided with internal threads.

[0058] Continue to refer Figure 17 , which shows a modification of the previously shown electromechanical brake. In this embodiment, the outer end 411 of the second guide pin 41 has an external thread 4111, and the inner end 412 of the second guide pin 41 has a torque applying portion. In this embodiment, the torque applying portion is in the form of an inner hexagonal notch. Alternatively, the torque applying portion can be in any other form suitable for receiving torque. In addition, Figure 17 In the embodiment, the bushing 981 is installed in the second mounting hole, and the sealing sleeve 99 is connected between the bushing 981 and the inner end of the second channel.

[0059] Continue to refer Figure 18 , which shows a modification of the previously shown electromechanical brake. In this embodiment, the outer end 411 of the second guide pin 41 has a torque-applying portion, and the inner end 412 of the second guide pin 41 has external threads 4121 that engage with the internal threads of the second mounting hole. Furthermore, the outer end 311 of the first guide pin 31 has a torque-applying portion, and the inner end 312 of the first guide pin 31 has external threads 3121 that engage with the internal threads of the first mounting hole. In this embodiment, both the first guide pin 31 and the second guide pin 41 are inserted and installed from the left side of the figure to the right side.

[0060] Continue to refer Figure 19 and Figure 20 , which shows a modified version of an electromechanical brake. In this embodiment, the housing 21 is formed by joining a first housing portion 201 and a second housing portion 202. Furthermore, the outer ends of the first and second channels are closed. The first and second guide pins 31 and 41 have substantially identical structures, respectively having first and second flanges 313 and 413, and external threads at their inner ends. The inner ends of the first and second guide pins 31 and 41, after passing through first and second mounting holes, are received by first and second nuts 33 and 43. Due to the split housing, even if the first and second guide pins 31 and 41 are both passed through their corresponding mounting holes, assembly of the electromechanical brake is not affected.

[0061] Continue to refer Figure 21 and Figure 22 , which shows a modified version of an electromechanical brake. In this embodiment, the outer end of the first channel is closed, and the inner end of the first guide pin 31 has a threaded hole and is mounted to the brake body 2 via a first bolt 32 that passes through and is received in the first mounting hole. The outer end of the second channel is open, and the second guide pin 41 has a second flange 413 and an inner end with external threads 4121 that engage with the inner threads of the second mounting hole, thereby connecting the second guide pin 41 to the brake body 2. In this embodiment, the housing does not have a third or fourth mounting hole, and the second guide pin 41 remains suspended. The outer end 411 of the second guide pin 41 is enclosed by a sealing sleeve 97 connected to the outer end of the second channel. The sealing sleeve 97 may optionally include a telescoping portion. In an alternative embodiment, the outer end of the first channel may also be open and enclosed by a sealing sleeve 97 connected to the outer end of the first channel.

[0062] The electromechanical brake according to various embodiments effectively relieves the stress on the guide pins or bolts, avoiding failures such as breakage of the guide pins or bolts and related safety hazards.

[0063] The specific embodiments described above are intended only to more clearly illustrate the principles of the present invention, wherein the various components are clearly shown or described to facilitate understanding of the principles of the present invention. Those skilled in the art may readily make various modifications or variations to the present invention without departing from the scope of the present invention. It should be understood that such modifications or variations are intended to be encompassed within the scope of the present invention.

Claims

1. An electromechanical brake, characterized in that: include: A friction plate bracket (1), wherein a first friction plate (71) and a second friction plate (72) are provided on the friction plate bracket (1) and are axially opposed to each other; when the friction plate bracket (1) of the electronic mechanical brake is fixedly mounted on a vehicle, the first friction plate (71) and the second friction plate (72) are respectively located on opposite sides of a brake disc (95); and the friction plate bracket (1) includes a first channel (11) and a second channel (12) located on both sides of the first friction plate (71) and the second friction plate (72) along the axial direction; and A brake body (2), the brake body (2) comprising a first mounting hole (211) and a second mounting hole (212), a first guide pin (31) and a second guide pin (41) being mounted to the brake body (2) through the first mounting hole (211) and the second mounting hole (212), respectively, and the first guide pin (31) and the second guide pin (41) being inserted into the first channel (11) and the second channel (12) of the friction plate bracket (1), respectively, so that the brake body can be axially slidably mounted to the friction plate bracket (1); Wherein, the first guide pin (31) penetrates into the first mounting hole (211).

2. The electromechanical brake according to claim 1, wherein The first guide pin (31) has a first flange (313), the first flange (313) abuts against the outer side of the first mounting hole (211), the first guide pin (31) has an inner end (312) passing through the first mounting hole, the inner end (312) has a first external thread (3121), and the first nut (33) is mounted to the first external thread (3121) of the first guide pin and abuts against the inner side of the first mounting hole (211).

3. The electromechanical brake according to claim 2, wherein: The inner end (412) of the second guide pin (41) has a second threaded hole, and the second guide pin (41) is mounted to the brake body by a second bolt (42) passing through the second mounting hole (212) and received by the second threaded hole.

4. The electromechanical brake according to any one of claims 1 to 3, characterized in that: The first mounting hole (211) and the second mounting hole (212) are staggered in the axial direction, wherein the first mounting hole (211) has an axial length greater than that of the second mounting hole (212), and wherein the first mounting hole (211) is axially more inward than the second mounting hole (212).

5. The electromechanical brake according to any one of claims 1 to 3, characterized in that: The outer ends of the first channel (11) and / or the second channel (12) are open, and the outer ends of the first guide pin (311) and / or the outer ends of the second guide pin (411) extend out of the first channel (11) and / or the second channel (12), so that during braking, when the brake body (2) slides axially relative to the friction plate bracket (1), the length of the contact section between the first guide pin (31) and the first channel (11) and / or the second guide pin (41) and the second channel (12) remains unchanged.

6. The electromechanical brake according to claim 5, characterized in that The outer end (311) of the first guide pin and / or the outer end (411) of the second guide pin are installed into the third mounting hole (216) and / or the fourth mounting hole (217) on the brake body, wherein the third mounting hole (216) and / or the fourth mounting hole (217) are located on the outer flange (215) of the outer end of the cover of the brake body.

7. The electromechanical brake according to claim 5, characterized in that The outer end (311) of the first guide pin and / or the outer end (411) of the second guide pin is wrapped by a sealing sleeve connected to the first channel and / or the second channel.

8. The electromechanical brake according to any one of claims 1 to 3, characterized in that: The brake body (2) includes a cover (21), a main module (23) connected to the cover (21), and a motor (22) and an electronic control unit (24) connected to the main module (23), wherein the first mounting hole and the second mounting hole are arranged on inner flanges (214) on both sides of the inner end of the cover, the main module (23) includes an action end (25) acting on the first friction plate (71), and the cover (21) includes an outer end (213) acting on the second friction plate (72).

9. The electromechanical brake according to claim 8, characterized in that The cover (21) is composed of a first cover part (201) and a second cover part (202) assembled in the axial direction, wherein the first cover part (201) defines the first mounting hole (211) and the second mounting hole (212) and is connected to the main module (23), and the second cover part (202) includes an outer end portion (213) acting on the second friction plate.

10. The electromechanical brake according to any one of claims 1 to 3, characterized in that: At least one of the outer end (311) and the inner end (312) of the first guide pin (31) has an outer thread to engage with the inner thread of the corresponding mounting hole, and at least one of the outer end (311) and the inner end (312) of the first guide pin (31) has a torque applying portion, and / or at least one of the outer end (411) and the inner end (412) of the second guide pin (41) has an outer thread to engage with the inner thread of the corresponding mounting hole, and at least one of the outer end (411) and the inner end (412) of the second guide pin (41) has a torque applying portion.

Images