A brake and an electric motor

Abstract

The present invention provides a brake and a motor, and relates to the field of motors. When the brake is in use, it is sleeved on a rotating component, and the brake includes: a brake stator, an armature, a friction plate, and a baffle. The armature is located between the brake stator and the friction plate, and the baffle is located on the side of the friction plate away from the armature. The friction plate can rotate synchronously with the rotating component, and any point on the friction plate remains relatively still with the rotating component during rotation. The brake provided by the present invention has a seamless connection between the friction plate and the rotating component, so that there is no gap between the friction plate and the rotating component, thereby avoiding the problem of noise generated when the rotating component drives the friction plate to rotate.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to a brake and a motor. Background Art

[0002] The brake is an important component of the motor. In practical applications, the friction plate in the brake needs to be connected to the rotating shaft in the motor and rotate with the motor. In existing motors, the friction plate and the rotating shaft are connected through structures such as square wheels or splines. However, whether a square wheel or a spline is used for connection, there is a clearance fit between the rotating shaft and the friction plate. Due to the existence of the clearance, when the rotating shaft drives the friction plate to rotate through the square wheel or spline, the friction plate will collide with the square wheel or spline due to relative motion, which will inevitably generate noise. Summary of the invention

[0003] The invention provides a brake and a motor, aiming to improve the problem of noise when the existing brake is connected to a rotating shaft through a square wheel or a spline.

[0004] The present invention is achieved in that:

[0005] A brake is sleeved on a rotating component, comprising: a brake stator, an armature, a friction plate and a baffle, wherein the armature is located between the brake stator and the friction plate, the baffle is located on the side of the friction plate away from the armature, the friction plate can rotate synchronously with the rotating component, and any point on the friction plate remains relatively stationary with the rotating component during rotation.

[0006] Furthermore, in a preferred embodiment of the present invention, the friction plate and the rotating component are integrally formed.

[0007] Furthermore, in a preferred embodiment of the present invention, a through hole and a connecting ring are provided on the friction plate, the connecting ring is arranged around the through hole, and the axis of the connecting ring is perpendicular to the friction plate, and at least one fixing hole is provided on the side wall of the connecting ring, and a fixing screw is provided in the fixing hole.

[0008] Furthermore, in a preferred embodiment of the present invention, a screw hole matching the set screw is provided on the rotating component.

[0009] Furthermore, in a preferred embodiment of the present invention, the number of the fixing holes is two, and the two fixing holes are arranged opposite to each other.

[0010] Furthermore, in a preferred embodiment of the present invention, the baffle is composed of a plurality of sub-plate bodies, and each of the sub-plate bodies is connected to the brake stator.

[0011] Furthermore, in a preferred embodiment of the present invention, the baffle is composed of two sub-plate bodies.

[0012] An electric motor comprises the brake described in any one of the above items.

[0013] The beneficial effect of the present invention is that the brake obtained by the above design of the present invention can avoid the problem of noise generated by collision because the friction plate always remains relatively still with the rotating part when rotating with the rotating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 is an exploded diagram of a brake provided by Embodiment 1 of the present invention;

[0016] Figure 2 is a schematic structural diagram of a brake provided in Example 1 of the present invention;

[0017] Figure 3 is an exploded diagram of a brake provided by Embodiment 2 of the present invention;

[0018] Figure 4 It is a structural schematic diagram of a brake provided in Example 2 of the present invention.

[0019] Icon: friction plate 1; connecting ring 11; fixing hole 111; fastening screw 12; baffle 2; sub-plate body 21; armature 3; brake stator 4. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] Embodiment 1:

[0026] Please refer to Figure 1 and Figure 2 As shown, this embodiment provides a brake which is sleeved on a rotating component when in use.

[0027] The brake comprises: a brake stator 4, an armature 3, a friction plate 1 and a baffle 2 which are stacked in sequence. Specifically, the armature 3 is located between the brake stator 4 and the friction plate 1, the baffle 2 is located on the side of the friction plate 1 away from the armature 3, the friction plate 1 is seamlessly connected to the rotating component, the friction plate 1 can rotate synchronously with the rotating component, and any point on the friction plate 1 remains relatively still with the rotating component during rotation. Among them, the armature 3 can reciprocate in the direction of approaching or moving away from the friction plate 1, and the armature 3 cannot rotate relative to the brake stator 4. The baffle 2 is connected to the brake stator 4. The friction plate 1 can rotate relative to the brake stator 4. When the armature 3 contacts the friction plate 1, the armature 3 prevents the friction plate 1 from continuing to rotate through the friction force between them, thereby forming a brake.

[0028] The brake provided in this embodiment avoids the problem of noise caused by collision because the friction plate 1 always remains relatively still with the rotating part when rotating with the rotating part. Specifically, to ensure that the friction plate 1 can always remain relatively still with the rotating part, the friction plate 1 is configured to be seamlessly connected with the rotating part.

[0029] Since the friction plate 1 is seamlessly connected to the rotating component, there is no gap between the friction plate 1 and the rotating component, thereby avoiding the friction plate 1 from moving relative to the rotating component layer when the rotating component drives the friction plate 1 to rotate, and avoiding the problem of collision and noise due to the existence of the gap. In this embodiment, the rotating component is the shaft of the motor. In the following content, the shaft will be described as a specific implementation method.

[0030] For further information, please refer to Figure 1 and Figure 2 As shown, in this embodiment, the friction plate 1 and the rotating shaft are integrally formed to achieve seamless connection between the friction plate 1 and the rotating shaft. When the rotating shaft is processed, the friction plate 1 is processed at the same time, so that the friction plate 1 and the rotating shaft are integrated, thereby directly avoiding the gap between the two, and eliminating the noise generated by the gap when the rotating shaft drives the friction plate 1 to rotate.

[0031] At the same time, the integrated friction plate 1 and the rotating shaft also simplify the assembly process and improve the assembly efficiency compared to the connection through a square wheel or a spline.

[0032] Taking the square wheel as an example, when assembling a motor that uses a square wheel for connection, it is necessary to first assemble the square wheel onto the motor shaft by cold pressing or shrink fitting, and then machine a connection hole corresponding to the square wheel on the friction plate 1. During assembly, it is also necessary to perform operations such as centering with the friction plate 1. The integrally formed friction plate 1 and shaft do not require operations such as cold pressing, drilling and centering, which reduces the assembly steps and improves assembly efficiency. At the same time, due to its complexity, the processing difficulty is increased. Compared with machining the spline structure on the shaft, the processing method of integrally forming the friction plate 1 and the shaft is simpler and reduces the processing cost.

[0033] The baffles 2 in the existing brakes are all sleeved on the rotating shaft by setting an avoidance hole. The diameter of the avoidance hole needs to be smaller than the diameter of the friction plate 1, and the diameters of the avoidance holes are different at different positions on the rotating shaft. Some of the rotating shafts have a diameter larger than the diameter of the avoidance hole on the side of the friction plate 1 away from the armature 3. Since the friction plate 1 and the rotating shaft are integrally arranged, during assembly, the baffle 2 cannot be directly sleeved on the rotating shaft. To avoid this problem, in this embodiment, the baffle 2 is composed of a plurality of sub-plate bodies 21, and the plurality of sub-plate bodies 21 can be spliced ​​into a complete baffle 2, and each sub-plate body 21 is connected to the brake stator 4. By dividing the baffle 2 into a plurality of sub-plate bodies 21, the split setting of the baffle 2 is realized. During assembly, it will not be limited by the size of the avoidance hole, and it can be directly connected to the brake stator 4. The problem of being unable to complete assembly due to the small diameter of the avoidance hole is avoided.

[0034] For further information, please refer to Figure 1 and Figure 2 As shown, in this embodiment, the baffle 2 is composed of two sub-plate bodies 21. The two sub-plate bodies 21 are semicircular, and a notch is provided at the center of the circle. The notches on the two sub-plate bodies 21 together form an avoidance hole. Each sub-plate body 21 is only provided with a screw hole for connecting with the brake stator 4, and the sub-plate body 21 can be connected with the brake stator 4 by screws.

[0035] In other embodiments, the baffle 2 may also be composed of three, four or even more sub-plate bodies 21 , as long as the multiple sub-plate bodies 21 can together form a complete baffle 2 .

[0036] This embodiment also provides an electric motor, which includes any one of the brakes described above.

[0037] Embodiment 2:

[0038] Please refer to Figure 3 and Figure 4 As shown, this embodiment provides a brake. Compared with the brake provided in Example 1, the brake provided in this embodiment is different in that, in this embodiment, the friction plate 1 and the rotating shaft are not integrally formed, but a seamless connection between the friction plate 1 and the rotating shaft is achieved by another method.

[0039] Specifically, in this embodiment, a through hole and a connecting ring 11 are provided on the friction plate 1. The connecting ring 11 is arranged around the through hole and is integrally arranged with the friction plate 1. The axis of the connecting ring 11 is perpendicular to the friction plate 1. At least one fixing hole 111 is provided on the side wall of the connecting ring 11, and a fixing screw 12 is provided in the fixing hole 111.

[0040] When in use, the shaft is inserted into the through hole, and when the friction plate 1 moves to the specified position, the set screw 12 is screwed into the corresponding fixing hole 111, and the set screw 12 is tightened to complete the connection between the friction plate 1 and the shaft. In this embodiment, the connection between the friction plate 1 and the shaft is completed by the connecting ring 11 and the set screw 12, and the set screw 12 is used for fixing, which can eliminate the gap between the friction plate 1 and the shaft, thereby eliminating the noise generated by the gap when the shaft drives the friction plate 1 to rotate.

[0041] In specific implementation, a screw hole matching the set screw 12 may be provided on the side wall of the rotating shaft, or it may not be provided and the existing rotating shaft may be used directly. When no screw hole is provided, the end of the set screw 12 abuts against the side wall of the rotating shaft, and the seamless connection between the friction plate 1 and the rotating shaft is completed by pressure. When a screw hole is provided, the set screw 12 is inserted into the screw hole during connection, and the seamless connection between the friction plate 1 and the rotating shaft is completed. Among them, the advantage of not providing a screw hole is that there is no need to change the structure of the rotating shaft, and the existing rotating shaft can be used directly without additional processing. The advantage of providing a screw hole is that the connection between the friction plate 1 and the rotating shaft is more stable through the connection of the screw hole. In this embodiment, a screw hole matching the set screw 12 is provided on the rotating shaft.

[0042] Furthermore, in this embodiment, there are two fixing holes 111, and the two fixing holes 111 are arranged opposite to each other. The two fixing holes 111 arranged opposite to each other can complete the centering operation of the friction plate 1 and the rotating shaft by controlling the screwing distance of the set screw 12, thereby avoiding eccentricity between the friction plate 1 and the rotating shaft, and the operation is simple, which is conducive to improving assembly efficiency.

[0043] In other embodiments, the fixing holes 111 can be set to three, four or even more, and it is only necessary to ensure that the spacing between adjacent positioning holes is equal. In this way, the centering operation of the friction plate 1 and the rotating shaft can be completed by controlling the screwing distance of the fixing screw 12.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A brake, mounted on a rotating component, characterized in that: include: A brake stator, an armature, a friction plate and a baffle, wherein the armature is located between the brake stator and the friction plate, the baffle is located on the side of the friction plate away from the armature, the friction plate can rotate synchronously with the rotating component, and any point on the friction plate remains relatively still with the rotating component during rotation; The friction plate is integrally formed with the rotating component; Alternatively, the friction plate is provided with a through hole and a connecting ring, the connecting ring is arranged around the through hole, the side wall of the connecting ring is provided with at least one fixing hole, and the fixing hole is provided with a set screw for connecting with the rotating component; The baffle is composed of a plurality of sub-plate bodies, each of which is provided with a notch on one side close to the center of the baffle, and the notches of the plurality of sub-plate bodies together form an avoidance hole; each of the sub-plate bodies is connected to the brake stator.

2. The brake according to claim 1, characterized in that The axis of the connecting ring is perpendicular to the friction plate.

3. The brake according to claim 1, characterized in that The rotating component is provided with a screw hole matching the set screw.

4. The brake according to claim 1, characterized in that The number of the fixing holes is two, and the two fixing holes are arranged opposite to each other.

5. The brake according to claim 1, characterized in that: The baffle is composed of two sub-plate bodies.

6. An electric motor, characterized in that: The electric motor comprises the brake according to any one of claims 1-5.

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