Brake device for a rotating electric machine

Abstract

The application provides a brake device of a rotary motor, which comprises a seat body, an upper plate, a sliding plate, a transmission member, a clamping sheet, a connecting member, a plate body and an elastic assembly. A rotary shaft penetrates the seat body in an axial direction. The sliding plate is arranged between the seat body and the upper plate and is driven by a driving module to adhere to or separate from the seat body in the axial direction. The transmission member is sleeved and fixed on the rotary shaft and comprises a sleeving periphery, a limiting portion and a through hole. The limiting portion protrudes outward from the sleeving periphery in a radial direction of the rotary shaft. The through hole penetrates the limiting portion in the axial direction. The clamping sheet is arranged in the sleeving periphery in the axial direction, is engaged with the sleeving periphery and is carried on an upper surface of the limiting portion. The clamping sheet is located between the sliding plate and the upper plate. The elastic assembly is arranged between the plate body and a lower surface of the limiting portion and provides an elastic force so that the plate body drives the clamping sheet to abut against the upper surface of the limiting portion in the axial direction.

Description

Technical Field

[0001] This case relates to a braking device for a rotating electric motor, and more particularly to a braking device for a rotating electric motor, which provides axial limiting of the brake pads to prevent wear and noise from the brake pads during rotation. Background Technology

[0002] Traditionally, braking devices for rotating electric machines can be divided into two types: dynamic and retaining. When the power to the rotating electric machine is cut off, the rotor will continue to rotate for a while due to inertia before coming to a complete stop. Many industries using rotating electric machines require a dynamic braking device to stop the machine immediately after power loss. A retaining brake is needed to ensure that the load does not rotate or become dislodged after the machine stops rotating. A typical braking device for a rotating electric machine consists of a base, a sliding plate, brake pads, an upper plate, and four-corner irons (or splines). The base is locked to the frame of the rotating electric machine and contains a drive module formed by coils and springs. When the drive module is energized, the electromagnetic force generated by the coils attracts the sliding plate, causing it to adhere to the base. This gives the brake pads between the upper plate and the sliding plate the freedom to rotate. The brake pads, along with the four-corner irons (or splines) and the rotor, rotate together after assembly. When the drive module is powered off, the sliding plate, which has lost its magnetic attraction, is pushed upward by the spring. The sliding plate then pushes the brake pad upward onto the upper plate. Due to the clamping of the sliding plate and the upper plate, the brake pad loses its freedom of rotation and stops the rotor's rotation by engaging with the four corner irons (or splines).

[0003] However, during the process of the drive module being powered on and the rotor rotating, the brake pads, lacking axial restraint, are prone to vertical movement and wobbling due to gravity, leading to wear. This wear can generate noise and debris, which can contaminate bearings and encoders in minor cases, and cause brake failure in severe cases.

[0004] In view of this, it is necessary to provide a braking device for a rotating electric motor that provides axial limiting of the brake pads to prevent wear and noise from the brake pads during rotation, thereby addressing the deficiencies of the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a braking device for a rotating electric motor, which, through an axial limiting structure of the brake pads, prevents wear and noise from occurring during rotation. The axial limiting structure can be achieved by adding a plate, a connector, and an elastic component. The plate maintains a fixed axial height with the brake pads via the connector, and the elastic component provides elastic force between the plate and the transmission component, causing the plate to drive the brake pads to axially abut against the transmission component. Because the brake pads abut against the transmission component in the axial direction, forming an axial restraint, when the transmission component drives the brake pads to rotate, the problem of wear caused by vertical movement or swaying of the brake pads due to gravity is less likely to occur. This also avoids the generation of noise and debris.

[0006] Another objective of this invention is to provide a braking device for a rotating electric motor. Compared to the axial limiting structure achieved by adding a plate, connector, and elastic component to the brake pads, the braking structure, which is based on a base, upper plate, and sliding plate, can be offset from each other. The plate, connector, and elastic component are, for example, housed in the hollow portion of the base; therefore, the axial limiting structure does not increase the overall structural size, effectively improving the stability of the braking device and its product competitiveness.

[0007] To achieve the aforementioned objectives, this invention provides a braking device assembly for a rotary electric motor, which brakes a rotating shaft. The braking device includes a base, an upper plate, a sliding plate, a transmission component, a brake pad, multiple connecting parts, a plate, and multiple elastic components. The base includes a drive module and a hollow portion, with the rotating shaft passing through the hollow portion along an axial direction. The upper plate is spatially opposite the base and is spaced axially on the base. The sliding plate is disposed between the base and the upper plate, and is driven by the drive module to axially attach to or detach from the base. The transmission component is sleeved and fixed to the rotating shaft to rotate synchronously with it. The transmission component includes a fitting periphery, a limiting portion, and multiple through holes. The limiting portion protrudes outward from the fitting periphery along a radial direction of the rotating shaft, and the multiple through holes pass through the limiting portion axially. The brake pad is axially fitted around the periphery of the transmission component, engaging with the periphery of the transmission component and bearing on an upper surface of the limiting part. The brake pad is located between the sliding plate and the upper plate. When the drive module drives the sliding plate to disengage from the seat, the brake pad is clamped by the sliding plate and the upper plate, preventing the transmission component from synchronously stopping with the rotating shaft. When the drive module drives the sliding plate to attach to the seat, the brake pad separates from the sliding plate and the upper plate and rotates under the drive of the transmission component. The plate is spatially opposite the brake pad, and multiple connecting members are connected between the plate and the brake pad through multiple through holes. Each elastic component is correspondingly fitted onto a connecting member and positioned between the plate and a lower surface of the limiting part, providing an elastic force that causes the plate to drive the brake pad axially against the upper surface of the limiting part.

[0008] In one embodiment, the drive module includes a spring assembly and a coil assembly. The spring assembly is disposed between the base and the sliding plate and is configured to provide a thrust to drive the sliding plate away from the base. The coil assembly is embedded in the base and generates a magnetic attraction when energized, driving the sliding plate to resist the thrust and adhere to the base.

[0009] In one embodiment, the connector includes a locking bolt and a bushing, the bushing being connected between the brake pad and the plate through a corresponding through hole, and the locking bolt locking the brake pad and the plate through the bushing.

[0010] In one embodiment, the bushing has an axial height greater than the distance between the upper and lower surfaces of the limiting portion.

[0011] In one embodiment, the elastic component includes a compression spring sleeved on the outer periphery of the bushing to provide an elastic force between the plate and the lower surface of the limiting portion.

[0012] In one embodiment, the brake pad includes a plurality of first connecting holes, which spatially correspond to a plurality of through holes in the transmission component; the plate has a plurality of second connecting holes, which spatially correspond to a plurality of through holes in the transmission component, wherein the locking bolt locks the brake pad and the plate through the corresponding first connecting hole, the corresponding bushing and the corresponding second connecting hole, wherein the diameter of the first connecting hole and the diameter of the second connecting hole are smaller than the diameter of the bushing.

[0013] In one embodiment, the transmission component is a square iron or a spline.

[0014] In one embodiment, the seat is axially offset from the limiting part, the plate, multiple connectors, and the elastic component.

[0015] In one embodiment, the transmission member includes at least one locking hole extending radially along the rotation axis, and the braking device includes at least one locking member that locks the transmission member onto the rotation axis through the at least one locking hole.

[0016] In one embodiment, the plurality of connectors, elastic components, and plurality of perforations have the same number N, where N is an integer and N is greater than or equal to 3.

[0017] In one embodiment, multiple perforations are arranged equidistantly around the rotation axis in a limiting portion.

[0018] In one embodiment, the brake pad has a fitting opening, through which the brake pad is fitted onto the fitting periphery of the transmission member, wherein the fitting opening of the brake pad is greater than or equal to the fitting periphery of the transmission member.

[0019] In one embodiment, the sliding plate has a sliding plate hollow portion, the upper plate has an upper plate hollow portion, the plate body has a plate body hollow portion, and the rotation shaft passes through the seat hollow portion, the sliding plate hollow portion, the upper plate hollow portion, and the plate body hollow portion.

[0020] In one embodiment, the upper plate, the sliding plate, the plate body, and the base body form a ring structure.

[0021] In one embodiment, the braking device further includes a plurality of spacer posts, which are connected between the seat and the upper plate, and the plurality of spacer posts are offset from the sliding plate. Attached Figure Description

[0022] Figure 1 This is a perspective view showing the application of the braking device in a rotating electric motor according to an embodiment of this case;

[0023] Figure 2 This is a cross-sectional structural diagram showing the application of the braking device in a rotating electric motor according to an embodiment of this case;

[0024] Figure 3 This is a perspective view revealing the braking device in an embodiment of this case;

[0025] Figure 4 This is an exploded view of the braking device in an embodiment of this case;

[0026] Figure 5 This is an exploded view of the braking device in an embodiment of this case from another perspective;

[0027] Figure 6 This is a top view illustrating the braking device in an embodiment of this case;

[0028] Figure 7 This is a cross-sectional structural diagram revealing the braking device in an embodiment of this case;

[0029] Figure 8 This is a cross-sectional view revealing the braking device in an embodiment of this case.

[0030] Explanation of reference numerals in the attached figures

[0031] 1: Braking device

[0032] 10: base body

[0033] 11: Driver Module

[0034] 12: Hollow part of the seat

[0035] 20: On the board

[0036] 21: Hollow part of the upper plate

[0037] 22: Spacer column

[0038] 30: Sliding plate

[0039] 31: Hollow part of the sliding plate

[0040] 40: Transmission components

[0041] 41: Fitting the perimeter

[0042] 42: Limiting part

[0043] 421: Upper surface

[0044] 422: Lower surface

[0045] 43: Perforation

[0046] 44: Locking hole

[0047] 45: Shaft hole

[0048] 50: Relay Card

[0049] 51: Fitting

[0050] 52: First connecting hole

[0051] 60: Connector

[0052] 61: Locking bolt

[0053] 62: Bushing

[0054] 70: Plate body

[0055] 71: Hollow part of the plate

[0056] 72: Second connecting hole

[0057] 80: Flexible Components

[0058] 90: Rotation axis

[0059] C: Axial

[0060] d: aperture

[0061] D: Pipe diameter

[0062] H: Axial height

[0063] T: Thickness Detailed Implementation

[0064] Some typical embodiments embodying the features and advantages of this invention will be described in detail in the following description. It should be understood that this invention can have various variations in different implementations, all of which do not depart from the scope of this invention, and the descriptions and drawings herein are for illustrative purposes only and not for limiting the invention. For example, if the following description of a first feature disposed on or above a second feature indicates that it includes embodiments where the first and second features are in direct contact, and also includes embodiments where additional features may be disposed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, different embodiments in this disclosure may use repeated reference numerals and / or markings. These repetitions are for simplification and clarity and are not intended to limit the relationships between the various embodiments and / or the described appearance structures. Moreover, to facilitate the description of the relationship between one component or feature and another (plural) component or feature in the drawings, spatially related terms such as "below," "below," "lower," "above," "upper," and similar terms may be used. In addition to the orientations illustrated in the accompanying drawings, spatially relevant terms are used to cover different orientations of the device in use or operation. The device may also be otherwise positioned (e.g., rotated 90 degrees or located in other orientations), and the descriptions of the spatially relevant terms used will be interpreted accordingly. Furthermore, when a component is referred to as "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Although the numerical ranges and parameters of the broad scope of this disclosure are approximate, values ​​are stated as precisely as possible in specific examples. Additionally, it is understood that while terms such as "first," "second," and "third" may be used in the claims to describe different components, these components should not be limited by these terms, and the components described accordingly in the embodiments are represented by different component symbols. These terms are used to distinguish different components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the embodiments. The term "and / or" as thus used includes any or all combinations of one or more of the related listed items. Except in operational / working instances, or unless expressly stated otherwise, all numerical ranges, quantities, values, and percentages (e.g., angles, durations of time, temperatures, operating conditions, quantity ratios, and those percentages thereof) disclosed herein should be understood to be modified by the terms “approximately” or “substantially” in all embodiments. Accordingly, unless indicated to the contrary, the numerical parameters stated in this disclosure and the appended claims are approximate values ​​that may vary as necessary. For example, each numerical parameter should be interpreted at least according to the number of significant figures stated and by applying ordinary rounding principles. Ranges may be expressed herein as from one endpoint to another or between two endpoints. All ranges disclosed herein include endpoints unless otherwise specified.

[0065] Figures 1 to 8 This invention discloses a braking device applied to a rotating electric motor. In this embodiment, the braking device (or simply braking device) 1 of the rotating electric motor is, for example, paired with a rotating shaft 90 of a rotating electric motor to brake it. The braking device 1 includes a base 10, an upper plate 20, a sliding plate 30, a transmission component 40, a brake pad 50, a connecting component 60, a plate 70, and an elastic component 80. In this embodiment, the base 10 is, for example, an annular structure and includes a drive module 11 and a hollow portion 12 of the base. The drive module 11 includes, for example, a spring assembly (not shown) and a coil assembly (not shown), which are respectively assembled to provide a thrust and a magnetic attraction force, but this invention is not limited thereto. In this embodiment, the rotating shaft 90 passes through the hollow portion 12 of the base 10 along an axial direction C. The upper plate 20 is, for example, an annular structure and has a hollow portion 21. The upper plate 20 is spatially opposite to the base 10 and is spaced apart on the base 10 along an axial direction C. Similarly, the rotating shaft 90 passes through the hollow portion 21 of the upper plate 20 along the axial direction C. In this embodiment, the braking device 1 also includes, for example, a plurality of spacer posts 22, which are connected between the seat 10 and the upper plate 20 to maintain a fixed distance between the upper plate 20 and the seat 10. Furthermore, the sliding plate 30, spatially relative to the seat 10 and the upper plate 20, also has, for example, an annular structure with a hollow portion 31. The rotating shaft 90 passes through the hollow portion 31 of the sliding plate 30 along the axial direction C. In this embodiment, the sliding plate 30 is disposed between the seat 10 and the upper plate 20, and the plurality of spacer posts 22 are arranged in a staggered manner relative to the sliding plate 30, so that the sliding plate 30 can slide relative to the seat 10 and the upper plate 20 along the axial direction C.

[0066] It should be noted that the spring assembly of the drive module 11 is, for example, disposed between the base 10 and the sliding plate 30, and together they provide a thrust to drive the sliding plate 30 away from the base 10. Additionally, the coil assembly of the drive module 11 is, for example, embedded within the base 10, and when energized, generates a magnetic attraction force to drive the sliding plate 30 to resist the thrust provided by the spring assembly and adhere to the base 10. In other words, in this embodiment, the sliding plate 30 can be driven by the drive module 11 to adhere to or detach from the base 10 along the axial direction C. Of course, this invention is not limited to the manner in which the drive module 11 drives the sliding plate 30 to slide.

[0067] In this embodiment, the transmission component 40 may be, for example, a square iron or a spline, sleeved and fixed to the rotating shaft 90 to rotate synchronously with the rotating shaft 90. The transmission component 40 includes a fitting periphery 41, a limiting portion 42, multiple through holes 43, and a shaft hole 45. The transmission component 40 is sleeved and fixed to the rotating shaft 90 through the shaft hole 45. The fitting periphery 41 mates with the brake pad 50. The limiting portion 42 protrudes outward from the fitting periphery 41 along a radial direction of the rotating shaft 90, for example, forming an annular boss. Of course, the portion of the limiting portion 42 protruding outward from the fitting periphery 41 can be adjusted according to actual application requirements, and this embodiment is not limited to this. In this example, multiple through holes 43 penetrate the upper surface 421 and lower surface 422 of the limiting portion 42 along the axial direction C. The brake pad 50 has a fitting opening 51. The brake pad 50 is fitted along the axial direction C onto the fitting periphery 41 of the transmission member 40 through the fitting opening 51. In this embodiment, the fitting opening 51 of the brake pad 50 is, for example, larger than or equal to the fitting periphery 41 of the transmission member 40, so that when the transmission member 40 is driven by the rotating shaft 90, the fitting opening 51 of the brake pad 50 engages with the fitting periphery 41 of the transmission member 40, and the brake pad 50 is supported on the upper surface 421 of the limiting part 42.

[0068] In this embodiment, the brake pad 50 is located between the sliding plate 30 and the upper plate 20. When the drive module 11 drives the sliding plate 30 to disengage from the seat 10, the brake pad 50 is clamped by the sliding plate 30 and the upper plate 20, thus preventing the transmission member 40 and the rotating shaft 90 from stopping synchronously. When the drive module 11 drives the sliding plate 30 to attach to the seat 10, the brake pad 50 separates from the sliding plate 30 and the upper plate 20, and the brake pad 50 regains its freedom of rotation, allowing it to rotate under the drive of the transmission member 40.

[0069] It is worth noting that, in this embodiment, the plate 70 is spatially relative to the brake pad 50, and multiple connecting members 60 are connected between the plate 70 and the brake pad 50 through multiple through holes 43 of the transmission member 40. Furthermore, an elastic component 80 is sleeved on the connecting member 60 and disposed between the plate 70 and the lower surface 422 of the limiting portion 42 of the transmission member 40, providing an elastic force. In other words, the plate 70 maintains a fixed axial height H with the brake pad 50 through the connecting member 60, and the elastic component 80 provides an elastic force between the plate 70 and the lower surface 422 of the limiting portion 42 of the transmission member 40, allowing the plate 70 to drive the brake pad 50 to abut against the upper surface 421 of the limiting portion 42 of the transmission member 40 along the axial direction C. Since the brake pad 50 abuts against the limiting part 42 of the transmission member 40 in the axial direction C to form an axial restraint, when the transmission member 40 drives the brake pad 50 to rotate, it is not easy for the brake pad 50 to move up and down or wobble due to the influence of gravity, which would lead to wear problems. At the same time, it also avoids the generation of noise and debris.

[0070] In this embodiment, the plurality of connecting members 60, the plurality of elastic components 80, and the plurality of through holes 43 of the transmission member 40 have the same number N, where N is an integer and N is greater than or equal to 3. This allows the pawl 50 and the plate 70, connected by the plurality of connecting members 60 of the same height, to maintain a fixed height difference in the axial direction C. In this embodiment, the four through holes 43 are, for example, equidistantly arranged around the rotating shaft 90 on the limiting portion 42. In other embodiments, the number and arrangement of the connecting members 60 and the through holes 43 can be varied according to actual application requirements, and this invention is not limited thereto.

[0071] In this embodiment, each set of connectors 60 includes a locking bolt 61 and a bushing 62. The bushing 62 is, for example, tubular and is connected between the brake pad 50 and the plate 70 through corresponding through holes 43 on the limiting portion 42 of the transmission member 40. The locking bolt 61 locks the brake pad 50 and the plate 70 through the bushing 62. In this embodiment, the bushing 62 has, for example, an axial height H, which is greater than the distance from the upper surface 421 to the lower surface 422 of the limiting portion 42 of the transmission member 40. That is, the axial height H of the bushing 62 is greater than the thickness T of the limiting portion 42. Furthermore, in this embodiment, the brake pad 50 includes a plurality of first connecting holes 52, spatially corresponding to a plurality of through holes 43 of the transmission member 40. The plate 70 has a plurality of second connecting holes 72, spatially corresponding to a plurality of through holes 43 of the transmission member 40. Each connector 60 has a locking bolt 61 that secures the brake pad 50 to the plate 70 via a corresponding first connecting hole 52, a corresponding bushing 62, and a corresponding second connecting hole 72, using nuts at both ends, for example. The diameter d of both the first connecting hole 52 and the second connecting hole 72 is smaller than the diameter D of the bushing 62. Thus, when the locking bolt 61 secures the brake pad 50 to the plate 70 with nuts at both ends, the bushing 62 is clamped between the brake pad 50 and the plate 70, and the brake pad 50 and the plate 70 maintain a fixed axial height H through the support and connection of multiple bushings 62.

[0072] On the other hand, in this embodiment, the elastic component 80 further includes, for example, a plurality of compression springs, each compression spring being sleeved on the outer periphery of the bushing 62 to provide a uniform and stable elastic force between the plate 70 and the lower surface 422 of the limiting portion 42. The plate 70 can be driven by the connector 60 to abut the upper surface 421 of the limiting portion 42 along the axial direction C. Of course, this invention is not limited to the form of the elastic component 80. In other embodiments, the elastic component 80 may, for example, not be sleeved on the outer periphery of the bushing 62, but may be disposed between the plate 70 and the transmission member 40. By providing elastic force, the plate 70 can be driven by the connector 60 to abut the upper surface 421 of the limiting portion 42 along the axial direction C. This invention is not limited thereto, and will not be elaborated further.

[0073] It should be further noted that, in this embodiment, the seat 10, upper plate 20, sliding plate 30, transmission component 40, and brake pad 50 form a braking structure for the rotating shaft 90, providing braking function for the rotating shaft 90. The brake device 1 in this case further incorporates a plate 70, a connecting component 60, and an elastic component 80 to further construct the axial limiting structure of the brake pad 50 compared to the brake pad 50. In this example, the seat 10, sliding plate 30, and upper plate 20 are all annular structures, with the rotating shaft 90 passing through the hollow portion 12 of the seat, the hollow portion 31 of the sliding plate, and the hollow portion 21 of the upper plate. The seat 10, sliding plate 30, and upper plate 20 do not affect the rotation of the rotating shaft 90. It is worth noting that the axial limiting structure achieved by adding the plate 70, connecting component 60, and elastic component 80 to the brake pad 50 can be offset from the braking structure constructed by the seat 10, upper plate 20, and sliding plate 30. In this example, the seat 10 is offset from the limiting part 42, the plate 70, the multiple connectors 60, and the elastic component 80 along the axial direction C. The limiting part 42, the plate 70, the multiple connectors 60, and the elastic component 80 are, for example, housed within the space connected by the hollow portion 12 of the seat, the hollow portion 31 of the sliding plate, and the hollow portion 21 of the upper plate. Due to the axial limiting structure achieved by adding the plate 70, connectors 60, and elastic component 80 relative to the brake pad 50, the brake structure, which is structured with the seat 10, the upper plate 20, and the sliding plate 30, can be offset from each other. Therefore, the axial limiting structure does not increase the overall structural size, effectively improving the stability of the brake device 1 and its product competitiveness. Of course, in other embodiments, the axial limiting structure achieved by adding the plate 70, connectors 60, and elastic component 80 relative to the brake pad 50 can also be structured outside the space connected by the hollow portion 12 of the seat, the hollow portion 31 of the sliding plate, and the hollow portion 21 of the upper plate. This case is not limited to this, and will not be elaborated further.

[0074] In this embodiment, the transmission member 40 further includes at least one locking hole 44 extending radially along the rotating shaft 90, and the braking device 1 includes at least one locking fastener (not shown), such as a screw. The at least one locking fastener can lock the transmission member 40 onto the rotating shaft 90 through the at least one locking hole 44. Thus, when the transmission member 40 is sleeved onto the rotating shaft 90 through the shaft hole 45, it is further locked onto the rotating shaft 90, allowing the transmission member 40 and the rotating shaft 90 to operate synchronously. Of course, in other embodiments, the engagement and fixation of the transmission member 40 and the rotating shaft 90 can be achieved through a locking groove or a locking key. This embodiment is not limited to this and will not be elaborated further.

[0075] In summary, this invention provides a braking device for a rotating electric motor. Through an axial limiting structure for the brake pads, it prevents wear and noise from occurring during rotation. This axial limiting structure can be achieved by adding a plate, a connector, and an elastic component. The plate maintains a fixed axial height with the brake pads via the connector. The elastic component provides elastic force between the plate and the transmission component, causing the plate to drive the brake pads axially against the transmission component. Because the brake pads abut against the transmission component in the axial direction, creating an axial constraint, when the transmission component drives the brake pads to rotate, the problem of wear caused by vertical movement or swaying of the brake pads due to gravity is less likely to occur. It also avoids noise and debris generation. Furthermore, the axial limiting structure achieved by adding the plate, connector, and elastic component to the brake pads can be offset from the brake structure of the base, upper plate, and sliding plate frame. The plate, connector, and elastic component are housed, for example, in the hollow part of the base. Therefore, the axial limiting structure does not increase the overall structural size, effectively improving the stability of the braking device and its product competitiveness.

[0076] This case may be modified in various ways by those skilled in the art, but all of them shall not deviate from the protection sought by the appended claims.

Claims

1. A braking device for a rotary electric motor, configured to brake a rotating shaft, wherein the braking device comprises: A base, including a drive module and a hollow portion of the base, wherein the rotating shaft passes through the hollow portion of the base along an axial direction; The upper plate is spatially opposite to the base and is spaced apart on the base along the axial direction; A sliding plate is disposed between the base and the upper plate, and is driven by the driving module to attach to or detach from the base along the axial direction; A transmission component is sleeved and fixed to the rotating shaft to rotate synchronously with the rotating shaft. The transmission component includes a sleeve periphery, a limiting part, and a plurality of through holes. The limiting part protrudes outward from the sleeve periphery along the radial direction of the rotating shaft, and the plurality of through holes penetrate the limiting part along the axial direction. A brake pad is sleeved around the periphery of the transmission member along the axial direction, engages with the periphery of the transmission member, and is supported on the upper surface of the limiting portion. The brake pad is located between the sliding plate and the upper plate. When the driving module drives the sliding plate to disengage from the seat, the brake pad is clamped by the sliding plate and the upper plate to prevent the transmission member from being synchronously stationary with the rotating shaft. When the driving module drives the sliding plate to attach to the seat, the brake pad separates from the sliding plate and the upper plate and is driven to rotate by the transmission member. A plurality of connectors and a plate, wherein the plate is spatially opposite to the brake pad, and the plurality of connectors are respectively connected between the plate and the brake pad through the plurality of through holes; as well as Multiple elastic components are provided, each corresponding to the connector and disposed between the lower surface of the plate and the limiting part, to provide elastic force so that the plate drives the pawl to abut against the upper surface of the limiting part along the axial direction.

2. The braking device for a rotary electric motor according to claim 1, wherein the drive module includes a spring assembly and a coil assembly, the spring assembly being disposed between the base and the sliding plate, and being configured to provide thrust to drive the sliding plate away from the base, the coil assembly being embedded in the base and generating magnetic attraction when energized, driving the sliding plate to resist the thrust and adhere to the base.

3. The braking device of the rotary motor according to claim 1, wherein the connecting member includes a locking bolt and a bushing, the bushing being connected between the brake pad and the plate through a corresponding through hole, and the locking bolt locking the brake pad and the plate through the bushing.

4. The braking device for a rotary electric motor according to claim 3, wherein the bushing has an axial height greater than the distance from the upper surface to the lower surface of the limiting portion.

5. The braking device for a rotary electric motor according to claim 3, wherein the elastic component includes a compression spring sleeved on the outer periphery of the bushing to provide the elastic force between the plate and the lower surface of the limiting portion.

6. The braking device of the rotary motor according to claim 3, wherein the brake pad includes a plurality of first connecting holes corresponding spatially to the plurality of through holes of the transmission member; the plate has a plurality of second connecting holes corresponding spatially to the plurality of through holes of the transmission member, wherein the locking bolt locks the brake pad and the plate through the corresponding first connecting hole, the corresponding bushing and the corresponding second connecting hole, wherein the diameter of the first connecting hole and the diameter of the second connecting hole are smaller than the diameter of the bushing.

7. The braking device for a rotary electric motor according to claim 1, wherein the base is offset from the limiting portion, the plate, the plurality of connecting members and the elastic component in the axial direction.

8. The braking device for a rotary electric motor according to claim 1, wherein the transmission member includes at least one locking hole extending radially along the rotating shaft, and the braking device includes at least one locking member, wherein the at least one locking member locks the transmission member to the rotating shaft through the at least one locking hole.

9. The braking device for a rotary electric motor according to claim 1, wherein the plurality of connectors, the elastic component, and the plurality of perforations have the same number N, where N is an integer and N is greater than or equal to 3.

10. The braking device for a rotary electric motor according to claim 1, wherein the brake pad has a fitting opening, the brake pad is fitted onto the fitting periphery of the transmission member through the fitting opening, wherein the fitting opening of the brake pad is greater than or equal to the fitting periphery of the transmission member.

11. The braking device for a rotary motor according to claim 1, wherein the sliding plate has a hollow portion, the upper plate has a hollow portion, the plate body has a hollow portion, the rotating shaft passes through the hollow portion of the base, the hollow portion of the sliding plate, the hollow portion of the upper plate, and the hollow portion of the plate body.

12. The braking device for the rotary motor according to claim 1 further includes a plurality of spacer columns, the plurality of spacer columns being connected between the base and the upper plate, and the plurality of spacer columns being arranged in a staggered manner with respect to the sliding plate.

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