Brake device

Abstract

The utility model provides a brake device which comprises a first brake caliper and a second brake caliper which are oppositely arranged. The driving assembly is suitable for providing a driving effect; the actuating assembly is arranged between the first brake caliper and the second brake caliper, is hinged to the first brake caliper and the second brake caliper and is in transmission connection with the driving assembly; and the driving assembly is configured to drive the first brake caliper and the second brake caliper to relatively move close to and away from each other under the driving action of the driving assembly. According to the embodiment of the utility model, the structure of the braking device is compact, the lateral space of the wheels is saved, the execution and release of braking can be effectively realized only by utilizing relatively small driving power, and the parking braking function is realized due to the self-locking function. In addition, the brake device is easy to be functionally modularized, and the control assembly has larger design and installation space, so that the production line can be simplified, and the manufacturing cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle braking, in particular to a braking device, and more particularly to an electromechanical braking device. Background Art

[0002] Nowadays, the brake-by-wire technology has attracted more and more attention in the automotive industry because it is more convenient to integrate with systems such as electric vehicles, intelligent driving or autonomous driving. In a brake-by-wire system, the brake pedal can be decoupled from the hydraulic brake cylinder to a certain extent, so that the braking force mainly or even entirely depends on the motor, and the stroke of the brake pedal is detected for controlling the motor. Therefore, the controllable characteristics of the motor can be fully utilized to control the braking operation. For this purpose, the brake-by-wire system also needs to include a control unit for controlling the operation of the motor and an actuator for driving the brake execution components (such as brake calipers and / or brake linings) to perform operations. If arranged in the manner of conventional braking equipment in the prior art, the scale of the relevant braking equipment of the brake-by-wire system, especially the size in the lateral direction of the wheel, will be significantly increased. However, the space in the lateral direction of the wheel is already very limited, which poses challenges to the implementation of the brake-by-wire system and the layout of the vehicle chassis.

[0003] It can be seen that there is a design requirement for the braking equipment used in the brake-by-wire system to save space, especially the space on the side of the wheel. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a braking device to at least partially solve the above technical problems existing in the prior art.

[0005] According to a first aspect of the utility model, a braking device is provided, the braking device comprising:

[0006] A first brake caliper and a second brake caliper arranged oppositely;

[0007] A driving component adapted to provide a driving effect; and

[0008] An actuating component, the actuating component is arranged between the first brake caliper and the second brake caliper, is respectively hinged to the first brake caliper and the second brake caliper and is in transmission connection with the driving component, and is configured to drive the first brake caliper and the second brake caliper to perform relative movement of approaching and separating from each other by means of the driving effect of the driving component.

[0009] In an exemplary embodiment, the actuating component has a symmetric structure and is configured to be adapted to drive the first brake caliper and the second brake caliper to perform the relative movement synchronously.

[0010] In an exemplary embodiment, the actuating assembly includes: a screw rod, which is located between the first brake caliper and the second brake caliper and is configured to rotate under the driving action from the drive assembly; at least a first screw block threadedly coupled to the screw rod; and a pair of first connecting rods respectively hinged between the first screw block and each brake caliper, and the pair of first connecting rods are symmetrically arranged about the screw rod axis.

[0011] In an exemplary embodiment, the actuating assembly further includes a second screw block threadedly coupled to the screw rod and a pair of second connecting rods respectively hinged between the second screw block and each brake caliper, wherein the pair of second connecting rods are symmetrically arranged about the screw rod axis.

[0012] In an exemplary embodiment, the actuating assembly further comprises a stop nut fixedly mounted on a distal end of the screw rod.

[0013] In an exemplary embodiment, the thread directions of the first screw block and the second screw block are opposite, and the actuating assembly is configured as follows: when the first screw block and the second screw block approach each other along the rotating screw rod, the first brake caliper and the second brake caliper are pushed by the corresponding connecting rod to move away from each other relative to each other; and when the first screw block and the second screw block move away from each other along the reverse rotating screw rod, the first brake caliper and the second brake caliper are pulled by the corresponding connecting rod to move toward each other relative to each other.

[0014] In an exemplary embodiment, the first brake caliper and the second brake caliper are configured to perform the relative movement along at least one fixed guide rod.

[0015] In an exemplary embodiment, the at least one guide rod is arranged to penetrate the first brake caliper and the second brake caliper.

[0016] In an exemplary embodiment, the number of the guide rods is two and they are arranged parallel to each other.

[0017] In an exemplary embodiment, the braking device further comprises a transmission assembly, wherein the transmission assembly is configured to transmission-connect the driving assembly with the actuating assembly and transmit the driving action from the driving assembly to the actuating assembly.

[0018] In an exemplary embodiment, the braking device further comprises a control component, wherein the control component is configured to control the driving component to generate a driving effect.

[0019] In an exemplary embodiment, the braking device further includes a frame having at least: opposing first and second side walls; a third side wall on a side of the second side wall opposite the first side wall; and a transverse wall connected to the first side wall, the second side wall, and the third side wall.

[0020] In an exemplary embodiment, a first receiving space is formed by the first side wall, the second side wall, and the transverse wall, and the actuating assembly, the first brake caliper, and the second brake caliper are mounted on the frame within the first receiving space, wherein the first brake caliper and the second brake caliper are mounted on the frame by means of at least one guide rod that is fixed and guides the relative movement of each brake caliper, and both ends of the guide rod are fixed to the first side wall and the second side wall respectively.

[0021] In an exemplary embodiment, on a side of the transverse wall opposite the first receiving space, a second receiving space is formed by the transverse wall and the opposing first side wall and third side wall, and the transmission assembly is mounted within the second receiving space.

[0022] In an exemplary embodiment, the drive assembly is mounted on the transverse wall and / or the second side wall at a side of the second side wall opposite the first side wall.

[0023] In an exemplary embodiment, the control assembly is mounted on an end edge of the first side wall and / or the third side wall opposite the transverse wall.

[0024] In an exemplary embodiment, the transmission assembly includes a gear set, the gear set including an input wheel rotatably coupled to an output shaft of the drive assembly and an output wheel rotatably coupled to a screw of the actuating assembly, wherein the output shaft of the drive assembly passes through the transverse wall and is rotatably coupled to the input wheel, and the screw of the actuating assembly passes through the transverse wall and is rotatably coupled to the output wheel.

[0025] In an exemplary embodiment, the diameter of the input wheel of the transmission assembly is smaller than the diameter of the output wheel.

[0026] In an exemplary embodiment, the transmission assembly further includes an intermediate wheel, the diameter of the intermediate wheel being greater than or equal to the diameter of the input wheel and smaller than the diameter of the output wheel.

[0027] In an exemplary embodiment, the drive assembly includes a housing and an EC motor disposed within the housing, and a wiring connector from the drive assembly passes through the transverse wall and the second receiving space and is connected to the control assembly.

[0028] In an exemplary embodiment, the control assembly includes a PCB assembly, a housing accommodating the PCB assembly, and a cover closing the housing, and a bottom wall of the housing is mounted on the edge of the first side wall and / or the third side wall.

[0029] In an exemplary embodiment, the drive assembly further includes a rotor position sensor, and wiring connectors from the EC motor and the rotor position sensor pass through a housing of the control assembly and are connected to the PCB assembly.

[0030] In an exemplary embodiment, the PCB assembly includes a PCB board and various electronic devices and heat sinks integrated on the PCB board.

[0031] In an exemplary embodiment, the frame further includes a pair of end walls connected to the first side wall, the third side wall, and the transverse wall to surround the second receiving space, the housing of the control assembly is fixedly mounted on the edges of the first side wall, the third side wall, and the pair of end walls opposite to the transverse wall, and a sealing ring is further provided between the housing and the corresponding edge.

[0032] In an exemplary embodiment, the braking device further includes: a first brake lining provided on the first brake caliper and a second brake lining provided on the second brake caliper, the first brake lining and the second brake lining are opposed to each other; and a brake disc, one end of the brake disc is between the first brake lining and the second brake lining, and the brake disc has a wheel mounting structure adapted to mount a wheel.

[0033] The beneficial effects of the present invention in accordance with the above aspects of the present utility model are as follows. By disposing an actuating assembly that drives the first brake caliper and the second brake caliper to perform relative movements of approaching and separating from each other between the first brake caliper and the second brake caliper, at least a part of the power transmission path of the braking device can be transferred from the side of the brake caliper to between and above the brake calipers. As a result, the structure of the braking device is more compact, saving the space occupied on the side of the wheel, facilitating the implementation of the brake-by-wire system, and providing additional degrees of freedom for the layout of the vehicle body chassis. In addition, the actuating assembly has a structure similar to a scissor jack, capable of driving the brake pads to move relatively synchronously and symmetrically. Therefore, braking execution and release can be effectively achieved with only a relatively small driving power. Moreover, the actuating assembly with a structure similar to a scissor jack has a self-locking function in the absence of a driving effect. Thus, parking braking can be achieved only by the braking device itself without additional parking braking equipment, thereby saving a large amount of costs. Furthermore, the structure of the braking device helps to decouple the control function and the driving function, that is, enables the control component and the driving component to be modularized separately, thereby simplifying the production line and saving manufacturing costs. Finally, since the control component is installed on the outermost side in the radial direction of the wheel of the braking device, compared with being installed on the side of the wheel, the control component has a larger design and installation space, thus providing greater degrees of freedom for the design of the control component. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Hereinafter, the present utility model will be described in more detail by referring to the drawings, and the principles, features, and advantages of the present utility model can be better understood. The drawings include:

[0035] Figure 1 Schematically shows in a side cross-sectional view the overall structure of a braking device according to an exemplary embodiment of the present utility model;

[0036] Figures 2A to 2C Schematically shows respectively parts of the first and second brake calipers and the actuating assembly of a braking device according to an exemplary embodiment of the present utility model;

[0037] Figure 3A and Figure 3B Schematically shows respectively different operating states of the actuating assembly of a braking device according to an exemplary embodiment of the present utility model;

[0038] Figure 4A and Figure 4B Schematically shows respectively in a side cross-sectional view and a front view the frame of a braking device according to an exemplary embodiment of the present utility model;

[0039] Figure 5Schematically shows the drive assembly of a braking device according to an exemplary embodiment of the present invention;

[0040] Figure 6A and Figure 6B Schematically shows the transmission assembly of a braking device according to an exemplary embodiment of the present invention in a side sectional view and a top view respectively;

[0041] Figure 7 Schematically shows the control assembly of a braking device according to an exemplary embodiment of the present invention in a side sectional view; and

[0042] Figure 8A and Figure 8B Schematically shows the sealing rings installed between the control assembly and the frame of a braking device according to an exemplary embodiment of the present invention in a side sectional view and a top view respectively. Detailed implementation manners

[0043] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the protection scope of the present invention.

[0044] Figure 1 Schematically shows the overall structure of a braking device 100 according to an exemplary embodiment of the present invention in a side sectional view. Figures 2A to 2C Schematically shows parts of the first and second brake calipers 11, 12 and the actuation assembly 2 of a braking device 100 according to an exemplary embodiment of the present invention respectively, wherein Figure 2A Shows a sectional view of the parts of the first and second brake calipers 11, 12 hinged to the connecting rod, Figure 2B Shows a sectional view of the parts of the first and second brake calipers 11, 12 penetrated by the guide rod 10. Figure 3A and Figure 3B Schematically shows different operating states of the actuation assembly 2 of a braking device 100 according to an exemplary embodiment of the present invention respectively. Figure 4A and Figure 4B Schematically shows the frame 6 of a braking device 100 according to an exemplary embodiment of the present invention in a side sectional view and a front view respectively. Figure 5 Schematically shows the drive assembly 3 of a braking device 100 according to an exemplary embodiment of the present invention; Figure 6A and Figure 6BA transmission assembly 4 of a braking device 100 according to an exemplary embodiment of the present invention is schematically shown in a side cross-sectional view and a top view, respectively. Figure 7 A control assembly 5 of a brake device 100 according to an exemplary embodiment of the present invention is schematically shown in a side cross-sectional view. Figure 8A and Figure 8B A sealing ring 8 installed between a control assembly 5 and a frame 6 of a braking device 100 according to an exemplary embodiment of the present invention is schematically shown in a side cross-sectional view and a top view respectively.

[0045] like Figure 1 As shown, a brake device 100 according to an exemplary embodiment of the present utility model comprises a first brake caliper 11 and a second brake caliper 12 arranged opposite to each other, an actuating assembly 2, a driving assembly 3, a transmission assembly 4, a control assembly 5, a frame 6 and a brake disc 7. A first brake pad 13 and a second brake pad 14 are respectively arranged on the first brake caliper 11 and the second brake caliper 12, and the first brake pad 13 and the second brake pad 14 are also arranged opposite to each other. One end of the brake disc 7 is between the first brake pad 13 and the second brake pad 14. The brake disc 7 has a wheel mounting structure (not shown) suitable for mounting a wheel, and the wheel is mounted on the wheel mounting structure of the brake disc 7. The first brake caliper 11 and the second brake caliper 12 drive the first brake pad 13 and the second brake pad 14 to approach each other to clamp the brake disc 7 to brake the wheel.

[0046] The first brake caliper 11 and the second brake caliper 12 are directly driven by the actuating assembly 2 to synchronously move toward and away from each other. The driving assembly 3 is connected to the actuating assembly 2 via the transmission assembly 4, and provides a driving effect for the relative movement of the first brake caliper 11 and the second brake caliper 12 via the transmission assembly 4 and the actuating assembly 2. The control assembly 5 is configured to control the driving assembly 3 to generate a driving effect. The first brake caliper 11 and the second brake caliper 12, the actuating assembly 2, the driving assembly 3, the transmission assembly 4 and the control assembly 5 are all installed on the frame 6. The above-mentioned main parts of the brake device 100 are described in detail below.

[0047] like Figures 2A to 2CAs shown, the actuating assembly 2 is disposed between the first brake caliper 11 and the second brake caliper 12, is respectively hinged to the first brake caliper 12 and the second brake caliper 13, and has a symmetrical structure, so that it can be configured to drive the first brake caliper 11 and the second brake caliper 12 to perform relative movement synchronously. Specifically, the actuating assembly 2 may include: a screw rod 21, which is located between the first brake caliper 11 and the second brake caliper 12, especially in the middle, and is configured to rotate under the driving action from the driving assembly 3; at least a first screw block 22 threadedly coupled to the screw rod 21; a pair of first connecting rods 221, 222 respectively hinged between the first screw block 22 and each brake caliper 11, 12, and the pair of first connecting rods 221, 222 are arranged axially symmetrically about the screw rod 21; and a stop nut 24 fixedly installed at the end of the screw rod 21. Under the driving action of the driving assembly 3, the screw rod 21 rotates. Since the first screw block 22 cannot rotate synchronously with the screw rod 21 because it is hinged to each brake pad 11, 12 through a pair of first connecting rods 221, 222, it can only perform linear movement along the screw rod 21. This linear movement drives the pair of first connecting rods 221, 222 to swing and move, and further drives the first brake caliper 11 and the second brake caliper 12 to perform relative movement of approaching or separating from each other synchronously.

[0048] In a preferred embodiment, the actuating assembly 2 may further include a second screw block 23 threadedly coupled to the screw rod 21 and a pair of second connecting rods 231, 232 respectively hinged between the second screw block 23 and each brake caliper 11, 12, and the pair of second connecting rods 231, 232 are also arranged axially symmetrically about the screw rod 21. Optionally, the thread directions of the second screw block 23 and the first screw block 22 may be the same. In this way, when the screw rod 21 rotates, the first screw block 22 and the second screw block 23 move along the screw rod 21 in the same direction, and the moving directions of the two pairs of connecting rods and the acting directions on the corresponding brake calipers 11, 12 are also substantially the same. More preferably, the thread directions of the second screw block 23 and the first screw block 22 are opposite. In this way, when the screw rod 21 rotates, the first screw block 22 and the second screw block 23 move along the screw rod 21 in opposite directions, and the moving directions of the two pairs of connecting rods and the acting directions on the corresponding brake calipers 11, 12 are also basically opposite or symmetrical, so that a more stable and reliable drive for the brake pads 11, 12 can be achieved. Further preferably, as Figure 3A and Figure 3B shown, the actuating assembly 2 is configured to: when the first screw block 22 and the second screw block 23 approach each other along the rotating screw rod 21, the first brake caliper 11 and the second brake caliper 12 are pushed by the corresponding connecting rods to perform relative movement of separating from each other ( Figure 3A ), when the first screw block 22 and the second screw block 23 move away from each other along the reversely rotating screw rod 21, the first brake caliper 11 and the second brake caliper 12 are pulled by the corresponding connecting rods to perform relative movement of approaching each other (Figure 3B )。 Thus, the actuating assembly 2 has a structure similar to a scissors jack, which is easy to effectively implement the execution and release of braking, and has a self-locking function in the absence of a driving effect. Therefore, the parking brake can be achieved only by the braking device 100 itself.

[0049] As Figures 1 to 2C shown, the first brake caliper 11 and the second brake caliper 12 perform the relative movement along at least one guide rod 10 fixed to the frame 6. The number of the guide rods 10 is preferably two, and of course, it can also be other suitable numbers, and more than one guide rod 10 is arranged parallel to each other. Preferably, the guide rod 10 is arranged to penetrate through the first brake caliper 11 and the second brake caliper 12, so as to enable the stable and reliable relative movement of the brake calipers 11 and 12.

[0050] As Figure 4A and Figure 4B shown, the frame 6 at least has: an opposed first side wall 61 and a second side wall 62; a third side wall 63 on the side of the second side wall 62 opposite to the first side wall 61; and a transverse wall 64 connected to the first side wall 61, the second side wall 62, and the third side wall 63. Among them, the third side wall 63 is directly opposed to the first side wall 61 without the second side wall 62 in between. Thus, a first receiving space 601 is formed by the first side wall 61, the second side wall 62, and the transverse wall 64, and on the side of the transverse wall 64 opposite to the first receiving space 601, a second receiving space 602 is formed by the transverse wall 64 and the opposed first side wall 61 and third side wall 63. The frame 6 is, for example, a metal casting.

[0051] Referring to Figure 1 and Figure 4A 、 Figure 4B , the actuating assembly 2, the first brake caliper 11, and the second brake caliper 12 are installed on the frame 6 in the first receiving space 601, wherein both ends of each guide rod 10 penetrating through the first brake caliper 11 and the second brake caliper 12 are respectively fixedly installed on the first side wall 61 and the second side wall 62. Thus, the first brake caliper 11 and the second brake caliper 12 are installed on the frame 6 by means of the guide rod 10.

[0052] The driving assembly 3 is installed on the transverse wall 64 and / or the second side wall 62 at the side of the second side wall 62 opposite to the first side wall 61. As Figure 5As shown, the drive assembly 3 includes a housing 30 and an EC motor disposed within the housing 30. The EC motor includes a stator 31, a rotor 32, an output shaft 33 rotationally coupled to the rotor, and a wiring connector 34. The housing 30 is mounted to the transverse wall 64 and / or the second side wall 62, for example, by welding, pasting, threaded connection, form fit, etc. In addition, the drive assembly 3 may further include a rotor position sensor 35 for detecting the rotor position of the rotor 32 of the EC motor and its wiring connector 36. The above wiring connectors 34, 36 may be in various suitable forms, such as plug pins, etc.

[0053] The transmission assembly 4 is mounted within the second receiving space 602. As Figure 6A and Figure 6B shown, the transmission assembly 4 may include a gear set. The gear set includes an input gear 41 rotationally coupled to the output shaft 33 of the drive assembly 3 and an output gear 42 rotationally coupled to the screw 21 of the actuating assembly 2, wherein the diameter of the input gear 41 is smaller than the diameter of the output gear 42, thereby increasing the output torque of the output gear 42. Depending on the size design of the braking device 100, the transmission assembly 4 may further include an intermediate gear 43, the diameter of which is greater than or equal to the diameter of the input gear 41 and smaller than the diameter of the output gear 42. Alternatively, the transmission assembly 4 may also include multiple intermediate gears, as long as their sizes can achieve torque increase. The specific structure of the transmission assembly 4 is not limited to the gear set, and various transmission mechanisms well-known to those skilled in the art can be appropriately designed and used as the transmission assembly 4.

[0054] As Figure 1 shown, the control assembly 5 is mounted to the end edges of the first side wall 61 and / or the third side wall 63 opposite to the transverse wall 64, that is, mounted on the side of the second receiving space 602 opposite to the transverse wall 64, and at least partially covers the second receiving space 602. As Figure 7 shown, the control assembly 5 includes a PCB assembly 50, a housing 51 for accommodating the PCB assembly 50, and a cover 52 for closing the housing 51, wherein the bottom wall of the housing 51 is mounted to the end edges of the first side wall 61 and / or the third side wall 63. The PCB assembly 50 includes a PCB board 501 and various electronic devices 502 and a heat sink 503 integrated on the PCB board 501. As Figure 7 shown by the dashed line in Figure 7 the control assembly 5 further includes a connection unit 53 for connecting to other relevant components of the vehicle. The arrangement position of the connection unit 53 is not limited to

[0055] As Figure 1 and Figure 4AAs shown, the transverse wall 64 is provided with through holes at appropriate positions, enabling the output shaft 33 of the drive assembly 3 to pass through the transverse wall 64 and be rotationally coupled with the input wheel 41 of the transmission assembly 4, and enabling the screw 21 of the actuating assembly 2 to pass through the transverse wall 64 and be rotationally coupled with the output wheel 42 of the transmission assembly 4, and enabling the wiring connectors 34, 36 of the drive assembly 3 to pass through the transverse wall 64 and the second receiving space 602 and be connected to the control assembly 5. In addition, as Figure 1 and Figure 7 shown, the bottom wall of the housing 51 of the control assembly 5 also includes appropriate through holes, enabling the wiring connectors 34, 36 from the EC motor and the rotor position sensor 35 of the drive assembly 3 to pass through the housing 51 of the control assembly 5 and be connected to specific positions on the PCB assembly 50.

[0056] In a preferred embodiment, the frame 6 further includes a pair of end walls (not shown) connected to the first side wall 61, the third side wall 63, and the transverse wall 64 and surrounding the second receiving space 602. The housing 51 of the control assembly 5 is fixedly mounted on the continuous first side wall 61, the third side wall 63, and the end edges of the pair of end walls opposite to the transverse wall 64, and a sealing ring 8 is further provided between the housing 51 and the corresponding continuous end edges to achieve the sealing of the second receiving space 602, thereby realizing the protection of various wiring connections. Of course, the through holes on the bottom wall of the housing 51 and the transverse wall 64 are also sealed accordingly.

[0057] According to some embodiments of the present invention, at least a part of the power transmission path of the braking device 100 can be transferred from the sides of the brake calipers 11, 12 to between and above the brake calipers 11, 12, so that the structure of the braking device 100 is more compact, saving the space occupied by it on the side of the wheel, facilitating the implementation of the by-wire braking system and providing additional degrees of freedom for the layout of the vehicle body chassis.

[0058] In addition, according to some embodiments of the present invention, the actuating assembly 2 has a structure similar to a scissor jack and can drive the brake pads 11, 12 to move synchronously and symmetrically relative to each other. Therefore, only a relatively small driving power can effectively achieve the execution and release of braking. Moreover, the actuating assembly 2 with a structure similar to a scissor jack has a self-locking function in the absence of a driving action. Therefore, the parking brake can be realized only by the braking device 100 itself without additional parking brake equipment, thus saving a large amount of costs.

[0059] Furthermore, according to some embodiments of the present invention, since the control assembly 5 and the drive assembly 3 can be made modular and relatively independent of each other, the structure of the braking device 100 also helps to decouple the control function and the drive function, thereby simplifying the production line and saving manufacturing costs.

[0060] According to some embodiments of the present utility model, since the control assembly 5 is installed on the outermost side in the radial direction of the wheel of the braking device 100, compared with being installed on the side of the wheel, the control assembly 5 has a larger design and installation space, thereby providing greater freedom for the design of the control assembly 5.

[0061] Although specific embodiments of the present utility model are described in detail herein, they are given for purposes of explanation only and should not be considered as limiting the scope of the present utility model. Various substitutions, alterations, and modifications can be conceived without departing from the spirit and scope of the present utility model.

Claims

1. A braking device, characterized in that: The braking device (100) comprises: A first brake caliper (11) and a second brake caliper (12) arranged opposite to each other; a drive assembly (3) adapted to provide a drive action; and An actuating assembly (2), the actuating assembly (2) being arranged between the first brake caliper (11) and the second brake caliper (12), being hingedly connected to the first brake caliper (11) and the second brake caliper (12) respectively and being transmission-connected to the driving assembly (3), and being configured to drive the first brake caliper (11) and the second brake caliper (12) to move towards and away from each other relative to each other by means of a driving action of the driving assembly (3).

2. The braking device according to claim 1, characterized in that The actuating assembly (2) has a symmetrical structure and is configured to drive the first brake caliper (11) and the second brake caliper (12) to synchronously perform the relative movement; and / or The first brake caliper (11) and the second brake caliper (12) are configured to perform the relative movement along at least one fixed guide rod (10).

3. The braking device according to claim 2, characterized in that: The actuating assembly (2) comprises: a screw (21), the screw (21) being located between the first brake caliper (11) and the second brake caliper (12), and being configured to rotate under the driving action of the driving assembly (3); At least a first screw block (22) threadably coupled to the screw rod (21); and a pair of first connecting rods (221, 222) respectively hinged between the first screw block (22) and each brake caliper, the pair of first connecting rods (221, 222) being arranged symmetrically about the screw rod (21); and / or The at least one guide rod (10) is arranged to penetrate the first brake caliper (11) and the second brake caliper (12).

4. The braking device according to claim 3, characterized in that: The actuating assembly (2) further comprises a second screw block (23) threadedly coupled to the screw rod (21) and a pair of second connecting rods (231, 232) respectively hinged between the second screw block (23) and each brake caliper, wherein the pair of second connecting rods (231, 232) are symmetrically arranged about the screw rod (21); The actuating assembly (2) further comprises a stop nut (24) fixedly mounted on the end of the screw rod (21); and / or The number of the guide rods (10) is two and they are arranged parallel to each other.

5. The braking device according to claim 4, characterized in that: The thread directions of the first screw block (22) and the second screw block (23) are opposite, and the actuating assembly (2) is configured such that: when the first screw block (22) and the second screw block (23) approach each other along the rotating screw rod (21), the first brake caliper (11) and the second brake caliper (12) are pushed by the corresponding connecting rod to move away from each other; and when the first screw block (22) and the second screw block (23) move away from each other along the rotating screw rod (21) in the opposite direction, the first brake caliper (11) and the second brake caliper (12) are pulled by the corresponding connecting rod to move toward each other.

6. The braking device according to any one of claims 1 to 5, characterized in that: The braking device (100) further comprises: a transmission assembly (4), the transmission assembly (4) being configured to connect the drive assembly (3) with the actuating assembly (2) in a transmission manner, and to transmit a driving action from the drive assembly (3) to the actuating assembly (2); A control component (5), the control component (5) being configured to control the drive component (3) to produce a driving effect; and / or A frame (6), wherein the frame (6) at least comprises: A first side wall (61) and a second side wall (62) that are opposite to each other; a third side wall (63) on a side of the second side wall (62) opposite to the first side wall (61); and A transverse wall (64) connected to the first side wall (61), the second side wall (62) and the third side wall (63).

7. The braking device according to claim 6, characterized in that: A first receiving space (601) is formed by the first side wall (61), the second side wall (62) and the transverse wall (64), the actuating assembly (2) and the first brake caliper (11) and the second brake caliper (12) are mounted on the frame (6) in the first receiving space (601), wherein the first brake caliper (11) and the second brake caliper (12) are mounted on the frame (6) by means of at least one guide rod (10) which is fixed and guides the relative movement of each brake caliper, and two ends of the guide rod (10) are respectively fixed to the first side wall (61) and the second side wall (62); On a side of the transverse wall (64) opposite to the first receiving space (601), a second receiving space (602) is formed by the transverse wall (64) and the first side wall (61) and the third side wall (63) that are opposite to each other, and the transmission assembly (4) is installed in the second receiving space (602); The drive assembly (3) is mounted on the transverse wall (64) and / or the second side wall (62) at a side of the second side wall (62) opposite to the first side wall (61); and / or The control assembly (5) is mounted on an end edge of the first side wall (61) and / or the third side wall (63) opposite to the transverse wall (64).

8. The braking device according to claim 7, characterized in that: The transmission assembly (4) comprises a gear set, the gear set comprising an input wheel (41) rotationally coupled to an output shaft (33) of the drive assembly (3) and an output wheel (42) rotationally coupled to a screw rod (21) of the actuating assembly (2), wherein the output shaft (33) of the drive assembly (3) passes through the transverse wall (64) to be rotationally coupled to the input wheel (41), and the screw rod (21) of the actuating assembly (2) passes through the transverse wall (64) to be rotationally coupled to the output wheel (42); The drive assembly (3) comprises a housing (30) and an EC motor arranged in the housing (30), and a wiring connection from the drive assembly (3) passes through the transverse wall (64) and the second storage space (602) and is connected to the control assembly (5); and / or The control component (5) comprises a PCB component (50), a shell (51) accommodating the PCB component (50), and a cover (52) closing the shell (51), wherein the bottom wall of the shell (51) is mounted on the end edge of the first side wall (61) and / or the third side wall (63).

9. The braking device according to claim 8, characterized in that: The diameter of the input wheel (41) of the transmission assembly (4) is smaller than the diameter of the output wheel (42); The transmission assembly (4) further comprises an intermediate wheel (43), wherein the diameter of the intermediate wheel (43) is greater than or equal to the diameter of the input wheel (41) and smaller than the diameter of the output wheel (42); The drive assembly (3) further comprises a rotor position sensor (35), and wiring connections (34, 36) from the EC motor and the rotor position sensor (35) pass through a housing (51) of the control assembly (5) and are connected to the PCB assembly (50); The PCB assembly (50) comprises a PCB board (501) and an electronic device (502) and a heat sink (503) integrated on the PCB board (501); and / or The frame (6) further comprises a pair of end walls connected to the first side wall (61), the third side wall (63) and the transverse wall (64) and surrounding the second storage space (602); a housing (51) of the control component (5) is fixedly mounted on the first side wall (61), the third side wall (63) and the end edges of the pair of end walls opposite to the transverse wall (64); and a sealing ring (8) is further arranged between the housing (51) and the corresponding end edges.

10. The braking device according to any one of claims 1 to 5 and 7 to 9, characterized in that: The braking device (100) further comprises: a first brake pad (13) disposed on the first brake caliper (11) and a second brake pad (14) disposed on the second brake caliper (12), the first brake pad (13) and the second brake pad (14) being opposite to each other; and A brake disc (7), one end of the brake disc (7) is between the first brake pad (13) and the second brake pad (14), and the brake disc (7) has a wheel mounting structure suitable for mounting a wheel.

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