A split-type brake, rotating mechanism, and motor

Abstract

This invention relates to the field of motor technology, specifically to a split-type brake, a rotating mechanism, and a motor. The split-type brake includes: a rotating shaft; a first end cover and a second end cover disposed along the axial direction of the rotating shaft and from near to far from the tail end of the rotating shaft, the first end cover and the second end cover being combined together along the extension direction of the rotating shaft to form a receiving cavity; a power component disposed along the axial direction of the rotating shaft within the receiving cavity; and a hub assembly disposed between the power component and the second end cover, the hub assembly including a hub component and brake pads disposed on the hub component; by placing the hub component at the tail end far from the rotating shaft, the diameter of the tail end of the rotating shaft can be relatively reduced to achieve the same transmitted torque, resulting in a larger internal space for the split-type brake. This larger space provides more installation space for the power component, thereby achieving a better braking effect.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a split-type brake, a rotating mechanism, and a motor. Background Technology

[0002] Electromagnetic split-type brakes are an important basic component, switching between holding and releasing states between energized and de-energized states. They are mainly used for the safety braking of rotating mechanisms (such as motor devices). Existing traditional split-type brakes, such as... Figure 1 As shown, the brake hub of the split brake is located at the tail end of the shaft. The shaft has a large diameter designed to transmit sufficient torque, which occupies the braking space of the split brake and affects the braking effect of the split brake under certain volume conditions. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a split brake, a rotating mechanism, and a motor.

[0004] This invention aims to design a split-type brake, comprising:

[0005] Shaft;

[0006] A cover assembly forms a receiving cavity. The cover assembly includes a first end cover and a second end cover, which are arranged from near to far from the tail end of the rotating shaft along the axial direction of the rotating shaft.

[0007] The power assembly is arranged in the receiving cavity along the axial direction of the rotating shaft;

[0008] A wheel hub assembly is disposed between the power assembly and the second end cover, and includes a wheel hub component and brake pads disposed on the wheel hub component;

[0009] When the split brake is in braking mode, the brake pads on the wheel hub are pressed between the power unit and the second end cap.

[0010] The braking process of a split brake is as follows: the power component moves towards the brake pad, pressing the brake pad tightly so that the brake pad is in close contact with the second end cover. The power component and the second end cover work together to squeeze the brake pad, thus achieving braking.

[0011] Compared to traditional split brakes, where the hub is located at the tail end of the shaft, close to the rear end cover, this design results in a larger shaft diameter to achieve sufficient torque transmission, thus occupying internal space. In this embodiment, by adjusting the hub's position closer to the second end cover, the hub is moved away from the tail end of the shaft. This allows the diameter of the shaft tail end to be relatively smaller while achieving the same torque transmission, resulting in more internal space for the split brake. This larger space provides more installation space for the hub, brake pads, and power assembly, leading to a corresponding increase in the size of the hub, brake pads, and power assembly, resulting in a larger braking area and thus better braking performance.

[0012] In some embodiments,

[0013] The hub component includes a center section and spokes;

[0014] The central part is connected to the pivot, and the spokes are connected to the periphery of the central part;

[0015] Brake pads include a first brake pad and a second brake pad;

[0016] The first brake pad is attached to the side wall of the wheel spoke near the second end cover, and the second brake pad is attached to the side wall of the wheel spoke near the power assembly.

[0017] The first and second brake pads form a double-sided friction brake on both sides of the wheel spokes. During the braking process of the split brake, the power component moves towards the brake pads and presses them together, so that the first brake pad is in close contact with the second end cover and the second brake pad is in close contact with the power component. This allows the power component and the second end cover to jointly squeeze the brake pads, achieving more effective braking through double-sided friction.

[0018] In some embodiments,

[0019] The spokes have an inner circle and an outer circle, with the outer circle located on the outer periphery of the inner circle;

[0020] The first brake pad is connected to the side wall of the outer circle near the second end cover, and the second brake pad is connected to the side wall of the outer circle near the armature.

[0021] The inner diameter is M, the outer diameter is N, and the thickness of the first brake pad is L. 1， The thickness of the second brake pad is L2;

[0022] Among them, N+L1>M, N+L2>M.

[0023] The first and second brake pads are positioned on the two side walls of the outer circle to perform more targeted friction braking. The thickness of the inner and outer circles, as well as the thickness of the first and second brake pads, are limited so that in the vertical plane, the first brake pad protrudes relative to the inner circle, and the second brake pad protrudes relative to the inner circle, thereby preventing interference between the brake pads and the power components after wear.

[0024] In some embodiments,

[0025] The power assembly includes the stator and armature;

[0026] The stator and armature are arranged sequentially in the receiving cavity along the axial direction of the rotating shaft;

[0027] The stator is positioned near the first end cover, and the armature is positioned near the wheel hub assembly;

[0028] When the split brake is in braking mode, the brake pads on the hub are pressed between the armature and the second end cap.

[0029] Because the diameter of the shaft is relatively reduced, the inner diameter of the stator is reduced and the outer diameter is increased. This reduces magnetic resistance and leakage magnetic field, while providing space for more magnets to be installed, which can increase the magnetizing effect of the stator.

[0030] In some embodiments,

[0031] The stator has a groove group consisting of multiple grooves;

[0032] The groove assembly includes three first grooves, three second grooves, and at least one third groove;

[0033] Each first slot contains a pin, each second slot contains an elastic element, and each third slot contains a split brake coil.

[0034] The first and second slots are both located at the outer edge of the stator sidewall, and each pair of adjacent first and second slots forms a set of pressure guide slots.

[0035] In normal operation, when the brake coil of the split brake is energized, the armature is pressed against the elastic element and the stator by the magnetic force, and the armature does not apply pressure to the brake pads. The split brake is in a non-braking state.

[0036] During the braking process of a split-type brake, the brake coil is de-energized. At this time, the armature loses its magnetic force and, under the action of the elastic element, separates from the stator and moves towards the brake pad, pressing the brake pad tightly. This makes the first brake pad and the second end cover in close contact, and the second brake pad in close contact with the armature. This allows the power component and the second end cover to jointly squeeze the brake pad, thus achieving braking.

[0037] The pin guides the movement of the armature, ensuring it moves accurately along the direction of the elastic force, thus effectively clamping the hub and brake pads.

[0038] In this embodiment, the elastic element is a spring.

[0039] More specifically, the stator is cold-pressed to form an interference fit with the first end cover, which solves the problems of complex processes and high costs associated with traditional split brake stators that use bolt connections or integrated die casting. Furthermore, pressing the stator into the first end cover through cold pressing helps the split brake to dissipate heat as a whole, making assembly easier and reducing the number of parts.

[0040] In this embodiment, the setting position and setting method of the pressure guide groove enable the spring and the pin to work together fully. When the spring applies a force to the armature to move the armature, the pin plays a guiding role in the movement of the armature, so that the armature can move more accurately along the direction of the spring force, thereby effectively pressing the brake pad.

[0041] In some embodiments,

[0042] The inner circumferential surface of the stator that mates with the shaft is provided with a first dustproof groove along the axial extension direction of the shaft, and the inner circumferential surface of the first end cover that mates with the shaft is provided with a second dustproof groove along the axial extension direction of the shaft.

[0043] Both the first and second dustproof grooves are labyrinth-type dustproof structures and are opposite each other along the axial direction of the rotating shaft.

[0044] During braking, the friction between the armature and the brake pads generates a large amount of dust. The first and second dustproof grooves prevent dust from leaking into the code disk of the motor encoder through the gap between the first end cover and the rotating shaft.

[0045] The first and second dustproof grooves, with their labyrinthine dustproof structure extending axially along the rotating shaft, provide multiple barriers to dust, resulting in better dustproof performance.

[0046] In some embodiments,

[0047] The second end cap and the side opposite to the rotating shaft are fitted with a bearing by cold pressing, and the bearing is fitted onto the rotating shaft by cold pressing.

[0048] The bearing is interference-fitted with the second end cover;

[0049] The bearing is interference-fitted with the shaft.

[0050] The wheel hub is cold-pressed onto the shaft, with an interference fit between the wheel hub and the shaft.

[0051] In this embodiment, the second end cap, bearing, center part and rotating shaft are assembled by cold pressing, which is convenient and reduces the number of parts. Compared with the die casting assembly method, it saves assembly costs.

[0052] In some embodiments,

[0053] The hub component is a flexible metal part. The armature moves towards the hub component, pressing the hub component and brake pad together. Under pressure, the hub component and brake pad undergo elastic deformation, resulting in a larger contact area with the second end cover and a tighter fit, which is beneficial for effective braking.

[0054] In some embodiments,

[0055] A rotating mechanism is provided, which includes the split brake described above.

[0056] In some embodiments,

[0057] A motor is provided that employs the aforementioned split-type brake. In addition to the many advantages of the aforementioned split-type brake, compared with a motor employing an integral split-type brake, the baffle component is eliminated, resulting in a reduction in the overall weight of the motor.

[0058] The solution provided by this invention has the following advantages compared with the prior art:

[0059] By placing the hub component at the rear end away from the pivot, the diameter of the pivot's rear end can be relatively reduced to achieve the same transmitted torque. This results in a larger internal space for the split brake, providing more room for the hub component, brake pads, and power assembly. Consequently, the dimensions of the hub component, brake pads, and power assembly are all increased, resulting in a larger braking area and thus a better braking effect. Attached Figure Description

[0060] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0061] Figure 1 This is a cross-sectional view of a split-type brake in the prior art;

[0062] Figure 2 This is a cross-sectional view of a split-type brake as shown in an embodiment of the present invention;

[0063] Figure 3 This is a cross-sectional view of the wheel hub and brake pads shown in an embodiment of the present invention;

[0064] Figure 4 This is a partial cross-sectional view of the stator shown in an embodiment of the present invention;

[0065] Figure 5 This is a side view of the stator shown in an embodiment of the present invention.

[0066] In the figure: 1-First end cap, 2-Second end cap, 3-Hub component, 301-Center part, 302-Spoke, 3021-Inner circle part, 3022-Outer circle part, 4-Brake pad, 401-First brake pad, 402-Second brake pad, 5-Power assembly, 501-Stator, 502-Armature, 6-Groove, 7-Split brake coil, 8-Pin, 9-Elastic element, 10-First dustproof groove, 11-Second dustproof groove, 12-Bearing, 13-Shaft, 14-First groove, 15-Second groove, 16-Third groove.

[0067] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0068] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0069] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0070] The following is a description of the terminology used in the embodiments of this application:

[0071] The tail end of the shaft refers to the end of the shaft structure that is furthest from the drive source (such as a motor or engine).

[0072] The application scenarios involved in the embodiments of this application are introduced as follows:

[0073] Currently existing traditional split-type brakes, such as Figure 1As shown, the brake hub of the split brake is located at the tail end of the shaft. The shaft has a large diameter designed to transmit sufficient torque, which occupies the braking space of the split brake and affects the braking effect of the split brake under certain volume conditions.

[0074] Based on this, the following embodiments are provided:

[0075] Example 1:

[0076] like Figure 2 As shown, a split-type brake is characterized by comprising:

[0077] Shaft 13;

[0078] The cover assembly forms a receiving cavity. The cover assembly includes a first end cover 1 and a second end cover 2. The first end cover 1 and the second end cover 2 are arranged from near to far from the tail end of the rotating shaft 13 along the axial direction of the rotating shaft 13.

[0079] The power assembly 5 is arranged in the receiving cavity along the axial direction of the rotating shaft 13;

[0080] The wheel hub assembly is disposed between the power assembly 5 and the second end cover 2, and includes a wheel hub component 3 and a brake pad 4 disposed on the wheel hub component 3;

[0081] When the split brake is in braking state, the brake pads 4 on the wheel hub 3 are pressed between the power assembly 5 and the second end cover 2.

[0082] In this embodiment, the braking process is as follows: the power component 5 moves towards the brake pad 4 to press the brake pad 4 tightly, so that the brake pad 4 is in close contact with the second end cover 2, and the power component 5 and the second end cover 2 jointly squeeze the brake pad 4 to achieve braking.

[0083] Compared to traditional split brakes, such as Figure 1 As shown, the hub 3' is located at the tail of the shaft 13', close to the rear end cover 1'. This design results in the shaft 13' having a large diameter to transmit sufficient torque, which occupies space inside the split brake. In this embodiment, the first end cover 1 and the second end cover 2 are directly connected to form a receiving cavity. By adjusting the position of the hub 3 to be closer to the second end cover 2, the hub 3 is moved away from the tail end of the shaft 13. This allows the diameter of the tail end of the shaft 13 to be relatively smaller while achieving the same torque transmission, resulting in more space inside the split brake. This larger space provides more installation space for the hub 3, brake pads 4, and power assembly 5. The dimensions of the hub 3, brake pads 4, and power assembly 5 are all increased accordingly, resulting in a larger braking area and thus a better braking effect.

[0084] In this embodiment, the composition of the power assembly 5 is not limited. The power assembly 5 only needs to satisfy the requirement of pressing or releasing the brake pad 4. For example:

[0085] Electromagnetic braking: The power assembly 5 is mainly composed of a stator and an armature. When current passes through the coil in the stator, a magnetic field is generated, which attracts the armature with electromagnetic force, thereby realizing the action of release or clamping.

[0086] Hydraulic braking: The power assembly 5 mainly achieves the braking function through the hydraulic system, and the brake pads 4 are pressed or released through the hydraulic transmission device;

[0087] Mechanical braking: The power assembly 5 mainly achieves the braking function through the mechanical transmission system, and the brake pads 4 are pressed or released through the mechanical transmission device;

[0088] The power component 5 is selected based on the specific application scenario and requirements.

[0089] Optionally, in one implementation of this embodiment, such as Figure 2 , 3 As shown,

[0090] The hub component 3 includes a center portion 301 and spokes 302;

[0091] The central part 301 is connected to the rotating shaft 13, and the spokes 302 are connected to the periphery of the central part 301;

[0092] Brake pad 4 includes a first brake pad 401 and a second brake pad 402;

[0093] The first brake pad 401 is attached to the side wall of the wheel spoke 302 near the second end cover 2, and the second brake pad 402 is attached to the other side wall of the wheel spoke 302 near the power assembly 5.

[0094] In this embodiment, the first brake pad 401 and the second brake pad 402 form a double-sided friction brake on both sides of the spoke 302. During the braking process of the split brake, the power component 5 moves towards the brake pad 4 and presses the brake pad 4 tightly, so that the first brake pad 401 is in close contact with the second end cover 2 and the second brake pad 402 is in close contact with the power component 5. This enables the power component 5 and the second end cover 2 to jointly squeeze the brake pad 4, achieving more effective braking through double-sided friction.

[0095] Optionally, in one implementation of this embodiment, such as Figure 3 As shown,

[0096] The spoke 302 has an inner circle portion 3021 and an outer circle portion 3022, with the outer circle portion 3022 located on the outer periphery of the inner circle portion 3021;

[0097] The first brake pad 401 is connected to the side wall of the outer circle 3022 near the second end cover 2, and the second brake pad 402 is connected to the side wall of the outer circle 3022 near the armature 502.

[0098] The thickness of the inner circle 3021 is M, the thickness of the outer circle 3022 is N, and the thickness of the first brake pad 401 is L. 1， The thickness of the second brake pad 402 is L2;

[0099] Among them, N+L1>M, N+L2>M.

[0100] The first brake pad 401 and the second brake pad 402 are disposed on the two side walls of the outer circle portion 3022 for more targeted friction braking. The thickness of the inner circle portion 3021, the outer circle portion 3022, and the thickness of the first brake pad 401 and the second brake pad 402 are limited so that in the vertical plane, the first brake pad 401 protrudes relative to the inner circle portion 3021 and the second brake pad 402 protrudes relative to the inner circle portion 3021, thereby preventing the brake pad 4 from interfering with the power component 5 after wear.

[0101] Optionally, in one implementation of this embodiment, such as Figure 2 , 4 As shown,

[0102] The power assembly 5 includes a stator 501 and an armature 502;

[0103] The stator 501 and armature 502 are arranged sequentially in the receiving cavity along the axial direction of the rotating shaft;

[0104] The stator 501 is located near the first end cover 1, and the armature 502 is located near the wheel hub assembly;

[0105] The stator 501 is the fixed part of the power assembly 5. The main function of the stator 501 is to generate a magnetic field. The armature 502 is usually made of iron. When the stator 501 is energized, it attracts the armature 502. At this time, the armature 502 and the brake pad 4 are in a non-pressurized state, that is, the split brake is in a non-braking state.

[0106] When the split brake is in braking state, the brake pads on the wheel hub are pressed between the armature 502 and the second end cap 2.

[0107] Because the diameter of the rotating shaft 13 is relatively reduced, the inner diameter of the stator 501 is reduced and the outer diameter is increased. This reduces magnetic resistance and leakage magnetic field, while providing space for more magnets to be laid out, which can increase the magnetic concentration effect of the stator 501.

[0108] Optionally, in one implementation of this embodiment, such as Figure 4 , 5 As shown,

[0109] The stator 501 has a groove group consisting of multiple grooves 6;

[0110] The groove assembly includes three first grooves 14, three second grooves 15, and at least one third groove 16;

[0111] Each first groove 14 is provided with a pin 8, each second groove 15 is provided with an elastic element 9, and each third groove 16 is provided with a split brake coil 7.

[0112] The first groove 14 and the second groove 15 are both located at the outer edge of the side wall of the stator 501, and each pair of adjacent first grooves 14 and second grooves 15 form a set of pressure guide grooves.

[0113] In normal operation, when the brake coil 7 is energized, the armature 502 presses the elastic element 9 against the stator 501 under the action of magnetic force, and the armature 502 does not apply pressure to the brake pad 4. The entire split brake is in a non-braking state.

[0114] During the braking process of the split brake, the brake coil 7 is de-energized. At this time, the armature 502 loses its magnetic force and, under the action of the elastic element 9, separates from the stator 501 and moves towards the brake pad 4, pressing the brake pad 4 tightly. This makes the first brake pad 401 in close contact with the second end cover 2, and the second brake pad 402 in close contact with the armature 502. This allows the power assembly 5 and the second end cover 2 to jointly squeeze the brake pad 4, thus achieving braking.

[0115] The pin 8 guides the movement of the armature 502, allowing it to move accurately along the direction of the force of the elastic element 9, thereby effectively pressing the hub 3 and the brake pad 4.

[0116] In this embodiment, the elastic element 9 is a spring.

[0117] More specifically, the stator 501 is cold-pressed to form an interference fit with the first end cover 1, which solves the problems of complex processes and high costs associated with traditional split brake stators that use bolt connections or integrated die casting. Furthermore, pressing the stator 501 into the first end cover 1 through cold pressing helps the split brake to dissipate heat as a whole, making assembly easier and reducing the number of parts.

[0118] In this embodiment, the setting position and setting method of the pressure guide groove enable the spring and pin 8 to work together fully. When the spring applies a force to the armature 502 to move the armature 502, the pin 8 plays a guiding role for the movement of the armature 502, so that the armature 502 can move more accurately along the direction of the spring force, thereby effectively pressing the brake pad 4.

[0119] Optionally, in one implementation of this embodiment, such as Figure 2 As shown,

[0120] The inner circumferential surface of the stator 501 that mates with the rotating shaft 13 is provided with a first dustproof groove 10 along the axial extension direction of the rotating shaft 13, and the inner circumferential surface of the first end cover 1 that mates with the rotating shaft 13 is provided with a second dustproof groove 11 along the axial extension direction of the rotating shaft 13.

[0121] The first dustproof groove 10 and the second dustproof groove 11 are both labyrinth-type dustproof structures and are opposite each other along the axial direction of the rotating shaft 13.

[0122] During braking, the friction between the armature 502 and the brake pad 4 generates a large amount of dust. The first dustproof groove 10 and the second dustproof groove 11 prevent the dust from leaking into the code disk of the motor encoder along the gap between the first end cover 1 and the rotating shaft 13.

[0123] The first dustproof groove 10 and the second dustproof groove 11 extend along the axial direction of the rotating shaft 13 in a labyrinthine dustproof structure, providing multiple barriers to dust and achieving better dustproof effect.

[0124] Optionally, in one implementation of this embodiment, such as Figure 2 As shown,

[0125] The second end cap 2 and the side opposite to the rotating shaft 13 are fitted with a bearing 12 by cold pressing. The bearing 12 is fitted onto the rotating shaft 13 by cold pressing.

[0126] Bearing 12 is interference-fitted with the second end cover 2;

[0127] The bearing 12 and the shaft 13 are interference fit.

[0128] The central part 301 is cold-pressed onto the rotating shaft 13, and the central part 301 and the rotating shaft 13 are interference-fitted.

[0129] In this embodiment, the second end cover 2, bearing 12, center part 301 and rotating shaft 13 are assembled by cold pressing, which is convenient for assembly and reduces the number of parts. Compared with the die casting assembly method, it saves assembly costs.

[0130] Optionally, in one implementation of this embodiment, such as Figure 3 As shown,

[0131] The hub component 3 is a flexible metal component. The armature 502 moves toward the hub component 3, pressing the hub component 3 and the brake pad 4 together. The hub component 3 and the brake pad 4 undergo elastic deformation under pressure, resulting in a larger contact area with the second end cover 2 and a tighter fit, which is beneficial for effective braking.

[0132] Example 2

[0133] like Figure 2 As shown, this embodiment provides a motor that uses the split brake as described in Embodiment 1. In addition to the many advantages mentioned in Embodiment 1, this motor eliminates the baffle component compared to a motor using an integral split brake, thus reducing the overall weight of the motor.

[0134] In summary, the ingenious design of this split-type brake lies in:

[0135] First, the position of the wheel hub is adjusted to be closer to the second end cap, so that the wheel hub is away from the tail end of the shaft. This allows the diameter of the tail end of the shaft to be relatively smaller while achieving the same transmitted torque, resulting in more space inside the split brake. This larger space provides more installation space for the wheel hub, brake pads, and power components. The dimensions of the wheel hub, brake pads, and power components are all increased accordingly, resulting in a larger braking area and thus achieving better braking performance.

[0136] Secondly, by setting the first brake pad and the second brake pad on both sides of the wheel spoke to form a double-sided friction brake, during the braking process of the split brake, the power component moves towards the brake pad, pressing the wheel hub and the brake pad together, so that the first brake pad is in close contact with the second end cover, and the second brake pad is in close contact with the power component, so that the power component and the second end cover jointly squeeze the brake pad, achieving more effective braking in a double-sided friction manner.

[0137] Third, the first and second dustproof grooves prevent dust from leaking onto the code disk of the motor encoder through the gap between the first end cover and the rotating shaft; the first and second dustproof grooves extend along the axial direction of the rotating shaft in a labyrinthine dustproof structure, providing multiple barriers to dust and achieving better dustproof effect.

[0138] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0139] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0140] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0141] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0142] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A split-type brake, characterized in that, include: Rotating shaft (13); A cover assembly that forms a receiving cavity, the cover assembly including a first end cap (1) and a second end cap (2), the first end cap (1) and the second end cap (2) being arranged from near to far along the axial direction of the rotating shaft (13) and from the tail end of the rotating shaft (13); A power assembly (5) is disposed in the receiving cavity along the axial direction of the rotating shaft (13), and the power assembly (5) includes a stator (501) and an armature (502). A hub assembly is disposed between the power assembly (5) and the second end cover (2). The hub assembly includes a hub component (3) and a brake pad (4) disposed on the hub component (3). The hub component (3) is positioned close to the second end cover (2) and away from the tail end of the rotating shaft (13). The stator (501) and the armature (502) are sequentially disposed within the receiving cavity along the axial direction of the rotating shaft (13). The stator (501) is disposed close to the first end cover (1), and the armature (502) is disposed close to the hub assembly. The stator (501) has... A groove group consisting of multiple grooves is provided; the groove group includes three first grooves (14), three second grooves (15) and at least one third groove (16); each first groove (14) is provided with a pin (8), each second groove (15) is provided with an elastic element (9), and each third groove (16) is provided with a split brake coil (7); the first grooves (14) and the second grooves (15) are both located at the outer edge of the side wall of the stator (501), and each pair of adjacent first grooves (14) and second grooves (15) forms a pressure guide groove; When the split brake is in braking state, the brake pad (4) on the hub (3) is pressed between the armature (502) and the second end cap (2); The hub component (3) includes a center portion (301) and spokes (302); The central part (301) is connected to the rotating shaft (13), and the spokes (302) are connected to the periphery of the central part (301); The brake pad (4) includes a first brake pad (401) and a second brake pad (402); the first brake pad (401) is attached to the side wall of the spoke (302) near the second end cap (2), and the second brake pad (402) is attached to the side wall of the spoke (302) near the power assembly (5). The side wall of the central part (301) near the second end cap (2) does not protrude from the end face of the first brake pad (401), and the side wall of the central part (301) near the power assembly (5) does not protrude from the end face of the second brake pad (402). The spoke (302) has an inner circle (3021) and an outer circle (3022), the outer circle (3022) being located on the outer periphery of the inner circle (3021); The first brake pad (401) is connected to the side wall of the outer circle portion (3022) near the second end cap (2), and the second brake pad (402) is connected to the side wall of the outer circle portion (3022) near the armature (502); The inner circular portion (3021) has a thickness of M, the outer circular portion (3022) has a thickness of N, and the first brake pad (401) has a thickness of L. 1， The thickness of the second brake pad (402) is L2; Among them, N+L1>M, N+L2>M; The inner circumferential surface of the stator (501) that mates with the rotating shaft (13) is provided with a first dustproof groove (10) along the axial extension direction of the rotating shaft (13), and the inner circumferential surface of the first end cover (1) that mates with the rotating shaft (13) is provided with a second dustproof groove (11) along the axial extension direction of the rotating shaft (13). The first dustproof groove (10) and the second dustproof groove (11) are both labyrinth-type dustproof structures and are opposite each other along the axial direction of the rotating shaft (13).

2. The split-type brake according to claim 1, characterized in that, A bearing (12) is installed on the side of the second end cover (2) opposite to the rotating shaft (13). The bearing (12) is cold-pressed between the inner circumferential surface of the rotating shaft (13) and the second end cover (2). The bearing (12) is interference-fitted with the second end cover (2) and the rotating shaft (13); The hub component (3) is assembled on the shaft (13) by cold pressing, and the hub component (3) and the shaft (13) are interference fit.

3. The split-type brake according to claim 1, characterized in that, The hub component (3) is a flexible metal component.

4. A rotating mechanism, characterized in that, The rotating mechanism includes a split brake as described in any one of claims 1-3.

5. An electric motor, characterized in that, The motor includes a split brake as described in any one of claims 1-3.

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