Electronic mechanical brake

Abstract

The electronic mechanical brake comprises a mounting support, a caliper body, a brushless motor and a transmission device, the mounting support comprises a front clamping jaw and a rear clamping jaw, an outer brake pad is arranged on the front clamping jaw in a sliding mode, an inner brake pad is arranged on the rear clamping jaw in a sliding mode, and a brake disc is arranged between the front clamping jaw and the rear clamping jaw; the caliper body is slidably connected with the mounting support through two guide rods, a piston cylinder is arranged on the caliper body, a piston which is connected with the output end of the transmission device and can axially slide is arranged in the piston cylinder, a hook portion located on the outer side of the outer brake pad is arranged at the front end of the caliper body, and two caliper body supporting lugs are arranged at the rear end of the caliper body. One guide rod is connected between one clamp body support lug and the rear clamping jaw of the mounting bracket; the transmission device comprises a transmission device shell, the brushless motor is installed on the transmission device shell, and the transmission device shell is fixedly connected with the rear end of the clamp body through at least three screws. Interference between the guide rod and the brake disc installed between the front clamping jaw and the rear clamping jaw can be avoided more easily.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle braking, and in particular relates to an electronic mechanical brake. Background Art

[0002] The reliability of the braking system is crucial to driving safety. In recent years, with the development of electronic control technology, more and more electronic mechanical brakes have been installed on vehicles. The electronic mechanical brake, referred to as EMB (Electromechanical Brake), consists of a mounting bracket, a caliper body, an electronic control unit, a motor, a transmission device, a motion conversion mechanism, a piston and a brake pad. The torque output by the motor is decelerated and increased by the transmission device, and then the motion conversion mechanism converts the rotational motion into translational motion to push the piston to move horizontally. The piston pushes the brake pad to press the brake disc, thereby braking the wheel. Among them, the motion conversion mechanism and the piston are arranged on the caliper body, the brake pad is arranged on the mounting bracket, the electronic control unit and the motor are generally directly mounted on the housing of the transmission device, and the mounting bracket is mounted on the vehicle body.

[0003] In the prior art, the guide rod used for the relative sliding of the caliper body and the mounting bracket passes through the entire mounting bracket along the movement direction of the brake pad, which easily interferes with the brake disc arranged at the position of the brake pad.

[0004] In the prior art, in order to install the motor, the housing of the transmission device will extend a cantilever section, and the motor is installed on the cantilever section; however, under vibration conditions, the amplitude of the cantilever section on the housing is large. At the same time, the motor installed on the cantilever section is heavy, and the center of gravity of the motor deviates from the fixed point of the housing, further aggravating the vibration of the housing. This can easily cause damage to the motor or electronic control unit installed on the housing, thereby causing the electronic mechanical brake to fail, seriously threatening driving safety.

[0005] For example, Chinese invention patent application CN117948361A discloses an electromechanical brake in which the transmission housing is roughly shaped like a herringbone, with the brake motor mounted on the legs of the herringbone-shaped transmission housing. Two flanges are provided in the middle of the transmission housing, and are connected to the housing of the brake actuator (equivalent to the caliper) by a pair of bolts. The legs of the herringbone-shaped transmission housing also form cantilever sections. Therefore, mounting the brake motor on the cantilever section of the transmission housing exacerbates vibrations of the transmission housing, thereby affecting the reliability of the electromechanical brake. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the present invention provides an electromechanical brake, which can more easily avoid interference between the guide rod and the brake disc installed between the front claw and the rear claw.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] An electromechanical brake comprises a mounting bracket, a caliper body, a brushless motor, and a transmission device. The mounting bracket includes a front jaw and a rear jaw, an outer brake pad being slidably mounted on the front jaw, and an inner brake pad being slidably mounted on the rear jaw. A vehicle brake disc is disposed between the front and rear jaws. The caliper body is slidably connected to the mounting bracket via two guide rods. The caliper body is provided with a piston cylinder, within which is housed an axially slidable piston connected to an output end of the transmission device. The piston moves forward and is used to push the inner brake pad against the brake disc. The front end of the caliper body is provided with a hook portion positioned outside the outer brake pad. The rear end of the caliper body is provided with two caliper body lugs, each extending radially from the outer wall of the piston cylinder. One of the guide rods is connected between one of the caliper body lugs and the rear jaw of the mounting bracket, and the other guide rod is connected between the other caliper body lug and the mounting bracket. The transmission device comprises a transmission housing. The brushless motor is mounted on the transmission housing. The transmission housing is fixedly connected to the rear end of the caliper body by at least three screws.

[0009] Furthermore, at least two of the screws are arranged on both sides of the brushless motor, and at least two of the screws are arranged on both sides of the piston cylinder.

[0010] Furthermore, the transmission device is a gear reduction device, the output end of the brushless motor is connected to the input end of the transmission device, the output end of the transmission device is an output shaft, and the output shaft extends into the piston cylinder and is connected to the piston through a motion conversion mechanism.

[0011] Furthermore, the brushless motor and the piston cylinder are located between two guide rods, and the axis of the brushless motor, the axis of the piston cylinder and the axes of the two guide rods are parallel to each other.

[0012] Furthermore, the guide rod close to the brushless motor is called the first guide rod, and the guide rod close to the piston cylinder is called the second guide rod. On a plane perpendicular to the axis of the piston cylinder, the axis of the brushless motor and the axis of the first guide rod, the projections of the axis of the piston cylinder, the axis of the brushless motor and the axis of the first guide rod are points P, M and G respectively, then 70°≤∠PMG≤180°.

[0013] Furthermore, a slot for arranging a brake disc is formed between the front claw and the rear claw, and a mounting hole for mounting on the vehicle body is provided on the rear claw; another guide rod is connected between another caliper support ear and the rear claw of the mounting bracket.

[0014] Furthermore, one end of the guide rod is fixed to the rear clamping claw, and the other end is in sliding engagement with a guide sleeve provided on the caliper support lug; or one end of one of the guide rods is fixed to the rear clamping claw (102), and the other end is in sliding engagement with a guide sleeve (205) provided on the caliper support lug (203), and one end of the other guide rod is fixed to the caliper support lug (203), and the other end is in sliding engagement with a guide sleeve provided on the rear clamping claw (102).

[0015] Furthermore, the front side of the transmission device housing is connected to the rear end of the caliper body, and the brushless motor is mounted on the front side of the transmission device housing.

[0016] Furthermore, an avoidance space is provided on the clamp body to avoid interference with the brushless motor.

[0017] Furthermore, the avoidance space is a through hole and is provided on one of the clamp body ears.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the mounting bracket includes a front jaw and a rear jaw, between which the vehicle's brake disc is positioned. The caliper body is slidably connected to the mounting bracket via two guide rods. The rear end of the caliper body is provided with two caliper body lugs, which extend radially and integrally from the outer wall of the piston cylinder. One of the guide rods is connected between one of the caliper body lugs and the rear jaw of the mounting bracket. This makes it easier to prevent interference between the guide rod and the brake disc mounted between the front and rear jaws.

[0020] The electronic mechanical brake in the present invention includes a mounting bracket, a caliper body, a brushless motor and a transmission device. The transmission device includes a transmission device housing, the brushless motor is installed on the transmission device housing, and the transmission device housing is fixedly connected to the rear end of the caliper body by at least three screws, and at least two screws are arranged on both sides of the brushless motor, and at least two screws are arranged on both sides of the piston cylinder; this can ensure that the transmission device housing and the rear end of the caliper body are tightly connected together, ensure the flatness of the connection between the transmission device housing and the rear end of the caliper body, and enhance the support effect of the caliper body on the transmission device housing at the brushless motor installation position, so as to effectively reduce the vibration of the transmission device housing at the brushless motor installation position, and further effectively reduce the vibration of the transmission device housing, so that it is not easy to damage the brushless motor or electronic control unit installed on the transmission device housing, and can improve the reliability of the electronic mechanical brake to ensure driving safety.

[0021] In the present invention, the brushless motor and the piston cylinder are located between two guide rods, and the axes of the brushless motor, the piston cylinder, and the two guide rods are all parallel to each other. The guide rod closest to the brushless motor is called the first guide rod, and the guide rod closest to the piston cylinder is called the second guide rod. On a plane perpendicular to the axes of the piston cylinder, the brushless motor, and the first guide rod, the projections of the axes of the piston cylinder, the brushless motor, and the first guide rod are respectively set to points P, M, and G, then ∠PMG ≥ 70°. The caliper body is slidably connected to the mounting bracket via the two guide rods. By providing the first guide rod close to the brushless motor and setting ∠PMG to be greater than or equal to 70°, the first guide rod's support effect on the position on the caliper body corresponding to the brushless motor can be enhanced, thereby improving the cantilever condition on the caliper body corresponding to the brushless motor, thereby providing more stable support for the transmission housing.

[0022] In the present invention, the front side of the transmission housing is connected to the rear end of the caliper body, and the brushless motor is mounted on the front side of the transmission housing. This avoids the placement difficulties caused by insufficient space when mounting the brushless motor on the rear side of the transmission housing, while also effectively reducing the overall structural dimensions of the electromechanical brake. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the electronic mechanical brake in the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure in another direction;

[0025] Figure 3 Schematic diagram of the explosion structure of the electronic mechanical brake in the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamp body in the present invention;

[0027] Figure 5 is a schematic diagram of the three-dimensional structure of the clamp body in another direction;

[0028] Figure 6 Schematic diagram of the top view of the mounting bracket in the electronic mechanical brake of the present invention;

[0029] Figure 7 It is a side view structural diagram of the mounting bracket;

[0030] Figure 8 This is a schematic diagram of the structure after the brake disc is arranged between the inner brake pad and the outer brake pad on the mounting bracket;

[0031] Figure 9 Schematic diagram of the main structure of the electronic mechanical brake in the present invention;

[0032] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure in the AA direction;

[0033] Figure 11 for Figure 9 The cross-sectional structural diagram of another embodiment of the electromechanical brake is shown along the AA direction.

[0034] Explanation of the reference numerals in the figure: 1. Mounting bracket, 101. Front clamping claw, 102. Rear clamping claw, 103. Slot, 104. Mounting hole, 2. Clamp body, 201. Piston cylinder, 202. Hook, 203. Clamp body ear, 204. Avoidance space, 205. Guide sleeve, 3. Brushless motor, 4. Transmission device, 401. Transmission device housing, 5a. First guide rod, 5b. Second guide rod, 6a. Outer brake pad, 6b. Inner brake pad, 7a. First screw, 7b. Second screw, 7c. Third screw, 7d. Fourth screw, 8. Piston, 9. Brake disc. DETAILED DESCRIPTION

[0035] The following is a further detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] like Figure 1-Figure 3 As shown, an electronic mechanical brake includes a mounting bracket 1, a caliper body 2, a brushless motor 3 and a transmission device 4, as shown in FIG. Figure 1-Figure 3 as well as Figure 6-Figure 8 As shown, the mounting bracket 1 includes a front claw 101 and a rear claw 102. The front claw 101 is provided with an outer brake pad 6a for sliding, and the rear claw 102 is provided with an inner brake pad 6b for sliding. The brake disc 9 of the vehicle is arranged between the front claw 101 and the rear claw 102 (see FIG. Figure 8 Preferably, a slot 103 for arranging the brake disc 9 is formed between the front claw 101 and the rear claw 102, and a mounting hole 104 for fixing the mounting bracket 1 to the vehicle body is provided on the rear claw 102.

[0039] like Figure 1-Figure 3 As shown, the caliper body 2 is slidably connected to the mounting bracket 1 via two guide rods. Specifically, the caliper body 2 is provided with two guide sleeves 205, one end of each guide rod being fixed to the mounting bracket 1, and the other end being slidably engaged with the corresponding guide sleeve 205. In an embodiment not shown, the two guide sleeves may also be provided on the mounting bracket 1, with one end of each guide rod being fixed to the caliper body 2, and the other end being slidably engaged with the corresponding guide sleeve on the mounting bracket 1.

[0040] like Figure 1-Figure 3 As shown, a piston cylinder 201 is provided on the caliper body 2, and a piston 8 connected to the output end of the transmission device 4 and axially slidable is provided in the piston cylinder 201. The piston 8 moves forward and is used to push the inner brake pad 6b to press the brake disc 9. The front end of the caliper body 2 is provided with a hook portion 202 on the outside (front) of the outer brake pad 6a.

[0041] like Figure 4-Figure 5 As shown, the rear end of the caliper body 2 is provided with two caliper body lugs 203, and the two caliper body lugs 203 are respectively extended radially to both sides from the outer wall of the piston cylinder 201, and each guide sleeve 205 is provided at the end of one of the caliper body lugs 203, for slidingly cooperating with one end of a corresponding guide rod, wherein the other end of one guide rod is fixed to the rear clamping claw 102 of the mounting bracket 1, and the other end of the other guide rod is fixed to the mounting bracket 1. Preferably, the other end of the other guide rod is also fixed to the rear clamping claw 102 of the mounting bracket 1. Alternatively, one end of one of the guide rods is fixed to the rear clamping claw (102), and the other end is slidably cooperating with the guide sleeve (205) provided on the caliper body lug (203), and one end of the other guide rod is fixed to the caliper body lug (203), and the other end is slidably cooperating with the guide sleeve provided on the rear clamping claw (102).

[0042] In this way, by connecting each guide rod between one of the caliper body ears 203 and the rear clamping jaw 102 of the mounting bracket, the two guide rods can be prevented from interfering with the brake disc 9 installed between the front clamping jaw 101 and the rear clamping jaw 102.

[0043] The transmission device 4 includes a transmission device housing 401, and the brushless motor 3 is mounted on the transmission device housing 401. The transmission device housing 401 is fixedly connected to the rear end of the caliper body 2 by at least three screws. Figure 5 、 Figure 10 and Figure 11 .

[0044] In one embodiment,

[0045] like Figure 5 、 Figure 10 and Figure 11 As shown, at least two screws are provided on both sides of the brushless motor 3, and at least two screws are provided on both sides of the piston cylinder 201. The brushless motor can ensure that the transmission housing 401 is tightly connected to the rear end of the caliper body 2, ensure the smoothness of the connection between the transmission housing 401 and the rear end of the caliper body 2, and enhance the support effect of the caliper body 2 on the transmission housing 401 at the installation part of the brushless motor 3, so as to effectively reduce the vibration of the transmission housing 401 at the installation part of the brushless motor 3, thereby effectively reducing the vibration of the transmission housing 401, thereby not easily damaging the brushless motor 3 or the electronic control unit installed on the transmission housing 401, and improving the reliability of the electronic mechanical brake to ensure driving safety.

[0046] Preferably, if Figure 9 、 Figure 5 and Figure 10 As shown, the transmission housing 401 is fixedly connected to the rear end of the caliper body 2 by four screws, two of which are arranged on both sides of the brushless motor 3 and are respectively referred to as the first screw 7a and the second screw 7b, wherein the second screw 7b is also on one side of the piston cylinder 201, and the remaining two screws are on the other side of the piston cylinder 201 and are respectively referred to as the third screw 7c and the fourth screw 7d.

[0047] Preferably, if Figure 9 、 Figure 11 As shown, the transmission housing 401 is fixedly connected to the rear end of the caliper body 2 by three screws, two of which are arranged on both sides of the brushless motor 3 and are respectively called the first screw 7a and the second screw 7b, wherein the second screw 7b is also on one side of the piston cylinder 201, and the other screw is on the other side of the piston cylinder 201 and is called the third screw 7c.

[0048] In one embodiment, the transmission device 4 is a gear reduction device. The output end of the brushless motor 3 is connected to the input end of the transmission device 4. The output end of the transmission device 4 is an output shaft. The output shaft extends into the piston cylinder 201 and is connected to the piston 8 through a motion conversion mechanism. The motion conversion mechanism converts the rotation of the output shaft into linear motion of the piston 8. Preferably, the motion conversion mechanism is a screw-nut mechanism.

[0049] like Figure 9 and Figure 10 As shown, in a preferred embodiment of the present invention, the brushless motor 3 and the piston cylinder 201 are located between two guide rods, and the axes of the brushless motor 3, the piston cylinder 201, and the two guide rods are all parallel to each other. Furthermore, the axes of the first screw 7a, the second screw 7b, the third screw 7c, and the fourth screw 7d are also parallel to the axis of the piston cylinder 201.

[0050] Among them, Figure 10 or Figure 11 As shown, the guide rod near the brushless motor 3 is called the first guide rod 5a, and the guide rod near the piston cylinder 201 is called the second guide rod 5b. On a plane perpendicular to the axis of the piston cylinder 201, the axis of the brushless motor 3, and the axis of the first guide rod 5a, the projections of the axis of the piston cylinder 201, the axis of the brushless motor 3, and the axis of the first guide rod 5a are set to points P, M, and G, respectively. Then, 70°≤∠PMG≤180°. Since the caliper body 2 is slidably connected to the mounting bracket 1 via the two guide rods, by positioning the first guide rod 5a near the brushless motor 3 and setting ∠PMG to be greater than or equal to 70°, the support effect of the first guide rod 5a on the position of the caliper body 2 corresponding to the brushless motor 3 can be enhanced, thereby improving the cantilever condition of the position of the caliper body 2 corresponding to the brushless motor 3. Preferably, when ∠PMG = 180°, the support effect of the first guide rod 5a on the position of the caliper body 2 corresponding to the brushless motor 3 can be maximized.

[0051] In one embodiment, Figure 1 、 Figure 2 and Figure 9 As shown, the front side of the transmission housing 401 is connected to the rear end of the caliper body 2, and the brushless motor 3 is mounted on the front side of the transmission housing 401. This avoids the layout difficulties caused by insufficient space when mounting the brushless motor 3 on the rear side of the transmission housing 401, and effectively reduces the overall structural size of the electronic mechanical brake.

[0052] In one embodiment, Figure 3-Figure 5 As shown, the clamp body 2 is provided with an escape space 204 to avoid interference with the brushless motor 3. Preferably, the escape space 204 is a through hole and is provided on one of the clamp body ears 203. Thus, the housing portion of the brushless motor 3 can be inserted into the through hole of the escape space 204.

[0053] The working principle of the electronic mechanical brake in the present invention is as follows: when the vehicle needs to brake, the brushless motor 3 rotates, and the torque output by the brushless motor 3 is decelerated and increased through the transmission device 4. The rotation of the output shaft of the transmission device 4 is then converted into linear motion through the motion conversion mechanism, driving the piston 8 to slide axially relative to the piston cylinder 201. When the piston 8 moves forward in the piston cylinder 201, it pushes the inner brake pad 6b to slide forward relative to the rear claw 102 of the mounting bracket 1, so that the inner brake pad 6b contacts and presses the brake disc 9 of the vehicle. The brake disc 9 is squeezed by the inner brake pad 6b. The pressure acts to apply a reverse force to the inner brake pad 6b, and the inner brake pad 6b applies a reverse force to the piston 8 and the caliper body 2, so that the caliper body 2 slides backward relative to the mounting bracket 1 along the two guide rods. In the process of sliding backward relative to the mounting bracket 1, the hook 202 of the caliper body 2 pushes the outer brake pad 6a to slide backward relative to the front claw 101 of the mounting bracket 1, so that the outer brake pad 6a also contacts and presses the brake disc 9. In this way, the inner brake pad 6b and the outer brake pad 6a simultaneously produce a pressing and friction effect on both sides of the brake disc 9, thereby braking the wheel.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An electromechanical brake comprising a mounting bracket (1), a caliper (2), a brushless motor (3) and a transmission device (4), characterized in that: The mounting bracket (1) comprises a front clamping claw (101) and a rear clamping claw (102), an outer brake pad (6a) being slidably provided on the front clamping claw (101), and an inner brake pad (6b) being slidably provided on the rear clamping claw (102), and a brake disc (9) of a vehicle is arranged between the front clamping claw (101) and the rear clamping claw (102); the caliper body (2) is slidably connected to the mounting bracket (1) via two guide rods, a piston cylinder (201) being provided on the caliper body (2), and a piston cylinder (201) being provided in the piston cylinder (201) for contact with the transmission device (4 ) is connected to the output end thereof and is axially slidable in the piston (8), the piston (8) moves forward and is used to push the inner brake pad (6b) to press the brake disc (9), the front end of the caliper body (2) is provided with a hook portion (202) located outside the outer brake pad (6a), the rear end of the caliper body (2) is provided with two caliper body ears (203), the two caliper body ears (203) are respectively extended from the outer wall of the piston cylinder (201) in the radial direction to both sides as a whole, one of the guide rods is connected between one of the caliper body ears (203) and the mounting bracket The rear clamping claw (102) is connected to the rear clamping claw (203) of the clamp body, and the other guide rod is connected between the other clamp body support ear (203) and the rear clamping claw (102) of the mounting bracket; one end of the guide rod is fixed to the rear clamping claw (102), and the other end is slidably matched with the guide sleeve (205) provided on the clamp body support ear (203); or one end of one of the guide rods is fixed to the rear clamping claw (102), and the other end is slidably matched with the guide sleeve (205) provided on the clamp body support ear (203), and one end of the other guide rod is fixed to the clamp body support ear (2 03), and the other end is slidably engaged with a guide sleeve provided on the rear clamping claw (102); the brushless motor (3) and the piston cylinder (201) are located between the two guide rods, and the axis of the brushless motor (3), the axis of the piston cylinder (201) and the axes of the two guide rods are parallel to each other; the transmission device (4) includes a transmission device housing (401), the brushless motor (3) is mounted on the transmission device housing (401), and the transmission device housing (401) is fixedly connected to the rear end of the caliper body (2) by at least three screws.

2. The electromechanical brake according to claim 1, characterized in that: At least two of the screws are arranged on both sides of the brushless motor (3), and at least two of the screws are arranged on both sides of the piston cylinder (201).

3. The electromechanical brake according to claim 1, characterized in that: The transmission device (4) is a gear reduction device, the output end of the brushless motor (3) is connected to the input end of the transmission device (4), the output end of the transmission device (4) is an output shaft, and the output shaft extends into the piston cylinder (201) and is connected to the piston (8) through a motion conversion mechanism.

4. The electromechanical brake according to claim 1, characterized in that: The guide rod close to the brushless motor (3) is called the first guide rod (5a), and the guide rod close to the piston cylinder (201) is called the second guide rod (5b). On a plane perpendicular to the axis of the piston cylinder (201), the axis of the brushless motor (3) and the axis of the first guide rod (5a), the projections of the axis of the piston cylinder (201), the axis of the brushless motor (3) and the axis of the first guide rod (5a) are set to points P, M and G respectively, then 70°≤∠PMG≤180°.

5. The electromechanical brake according to claim 1, characterized in that: A clamping groove (103) for arranging a brake disc (9) is formed between the front clamping claw (101) and the rear clamping claw (102), and a mounting hole (104) for mounting on a vehicle body is provided on the rear clamping claw (102).

6. The electromechanical brake according to claim 1, characterized in that: The front side of the transmission device housing (401) is connected to the rear end of the caliper body (2), and the brushless motor (3) is mounted on the front side of the transmission device housing (401).

7. The electromechanical brake according to claim 6, characterized in that: The clamp body (2) is provided with an avoidance space (204) to avoid interference with the brushless motor (3).

8. The electromechanical brake according to claim 7, characterized in that: The avoidance space (204) is a through hole and is arranged on one of the clamp body ears (203).

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