Stator assembly and electric machine

Abstract

The utility model relates to a kind of stator assembly and motor, stator assembly includes stator core and stator support, stator core includes annular inner connecting portion and the core unit being set on the outer wall of inner connecting portion along the circumferential interval of inner connecting portion;Stator support includes first side frame, second side frame and inner support frame, the outer circumferential side of first side frame and second side frame is formed with the insulation tooth corresponding to each core unit one by one, inner support frame is set in the inner side of stator core;First side frame and second side frame at least one thereof is provided with wiring slot, wiring slot is set in the inner side of first side frame and / or second side frame away from insulation tooth, wiring slot is provided with bundling hole in it. Bridge wire connected on coil is set in wiring slot, and is fixed on bundling hole by bundling, it is favorable to make bridge wire wiring neat, reduce the height of coil position, improve motor heat dissipation performance.

Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically, it relates to a stator assembly and a motor. Background Technology

[0002] In fitness equipment such as cycling machines or rowing machines, external rotor motors are typically installed in the center of the device. They combine with the user's strength via gears or chains to rotate a generator and produce electricity. Due to their simple structure, high efficiency, low noise, and durability, they have become one of the most widely used generator types in the fitness equipment industry.

[0003] The existing stator assembly of the external rotor motor has two ends in the coil, which is connected by a bridge wire. The bridge wire has a long span. The existing stator assembly does not have a pre-designed structure for the bridge wire and other wire harnesses. The bridge wire and power wire are directly fixed to the coil, which results in the coil being too high, affecting the coil's heat dissipation and causing arcing in high-voltage environments. Utility Model Content

[0004] The purpose of this utility model is to provide a stator assembly and motor to solve the problems existing in the prior art, such as the bridge wires and power lines used to connect the coils being directly fixed on the coils, resulting in the coils being too high, affecting heat dissipation, and easily causing arcing.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In one aspect, the present invention provides a stator assembly comprising: A stator core, comprising an annular inner connecting portion and core units circumferentially spaced on the outer wall of the inner connecting portion; The stator support includes a first side frame, a second side frame, and an inner support frame. The outer periphery of the first side frame and the second side frame are formed with insulating teeth corresponding to each of the core units. The inner support frame is disposed inside the stator core. At least one of the first side frame and the second side frame is provided with a wiring groove. The wiring groove is disposed inside the first side frame and / or the second side frame away from the insulating teeth. The wiring groove is provided with a wire bundling hole.

[0006] In some embodiments of this application, the inner support frame is disposed inside the stator core and the first side frame, and the wiring groove is formed on the second side frame and extends toward the first side frame.

[0007] In some embodiments of this application, the bottom of the wiring trough is provided with a plurality of wire-binding holes spaced apart along its circumference, and the inner wall of the wiring trough is provided with wire-binding recesses corresponding to the wire-binding holes one by one.

[0008] After the bridge cable is installed in the cable tray, the binding material passes through the cable bundle hole and the corresponding cable bundle notch to fix the bridge cable, which helps to improve the stability of the bridge cable connection in the cable tray.

[0009] In some embodiments of this application, a cable outlet groove is provided on the inner wall of the cable routing groove, and the size of the cable outlet groove is larger than that of the cable bundle recess.

[0010] The bridge wires connected to each coil are arranged along the wiring groove and eventually extend from the outlet section toward the first side frame.

[0011] In some embodiments of this application, the inner support frame includes a support end face and a support peripheral surface formed on the outer periphery of the support end face, the support peripheral surface being used to support the inner side of the first side frame and the stator core.

[0012] The inner support frame provides support for the stator core and the first side frame, and is used to fix the stator assembly on the intermediate shaft.

[0013] In some embodiments of this application, a first support ring portion and a second support ring portion are formed on the support circumferential surface. The outer diameter of the first support ring portion is adapted to the inner diameter of the first side frame, and the outer diameter of the second support ring portion is adapted to the inner diameter of the stator core.

[0014] The first support ring and the second support ring are used to support the first side frame and the stator core, respectively. The radial dimension of the outer wall of the first support ring is larger than that of the second support ring. Therefore, the side wall of the first support ring also plays an axial limiting role for the stator core.

[0015] In some embodiments of this application, the support end face is provided with wire fixing holes and wire routing holes, and the size of the wire routing holes is larger than that of the wire fixing holes.

[0016] The bridge wires that come out from the cable tray are connected to the power supply wires to power the coils. After the bridge wires are connected to the power supply wires, they are fixed to the wire fixing holes by clamps. The power supply wires come out from the cable routing holes.

[0017] In another aspect, the present invention also proposes an electric motor comprising the stator assembly described in any of the foregoing claims.

[0018] In some embodiments of this application, the motor further includes: An intermediate shaft has a connecting sleeve extending perpendicularly to the supporting end face, and the stator assembly is fixed to the intermediate shaft through the connecting sleeve. A rotor assembly, which is rotatably connected to the intermediate shaft via bearing components; Each of the iron core units and the insulating teeth on both sides are respectively fitted with coils, and some of the coils are connected with bridge wires, which are fixed in the wiring groove by binding members.

[0019] In some embodiments of this application, the end of the bridge cable is used to connect to a power line, and the power line is fixed to the support end face by a clamp.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are: The stator assembly involved in this application has at least one of the first side frame and the second side frame of the stator support provided with a wiring groove. The wiring groove is located on the inner side of the first side frame and / or the second side frame away from the insulating teeth. The bridge wires connected to some of the coils are arranged in the wiring groove and fixed to the wire bundle hole by the binding member. This helps to make the bridge wires neatly routed, reduce the height of the coil position, and improve the heat dissipation performance of the motor.

[0021] Other features and advantages of this utility model will become clearer after reading the specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of one embodiment of the motor proposed in this utility model; Figure 2 yes Figure 1 A breakdown diagram of the motor in the image; Figure 3 yes Figure 1 The motor plan view in the diagram; Figure 4 yes Figure 3 AA section view in the middle; Figure 5 It is a 3D cross-sectional view of the motor; Figure 6 This is a diagram of the stator core structure; Figure 7 This is the structural diagram of the first side frame; Figure 8 This is the structural diagram of the second side frame; Figure 9 This is a structural diagram of the stator assembly; Figure 10 This is one of the structural diagrams of the internal support frame; Figure 11 This is the second structural diagram of the internal support frame; In the picture, 100. Stator assembly; 101. Insulating teeth; 110. Stator core; 111. Internal connection part; 112. Core unit; 120. First side frame; 130. Second side frame; 131. Cable tray; 132. Cable bundling hole; 133. Inner wall; 134. Cable bundling notch; 135. Cable outlet section; 140. Inner support frame; 141. Support end face; 1411. Cable routing hole; 1412. Cable fixing hole; 142. Support peripheral surface; 1421. First support ring; 1422. Second support ring; 143. Connecting bushing; 200. Rotor assembly; 300, intermediate shaft; 400. Connecting bracket. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 limitations on this application.

[0026] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, 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 application based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0030] refer to Figures 1-5 This utility model proposes a stator assembly 100 and a motor, specifically an external rotor motor. In addition to the stator assembly 100, it also includes an intermediate shaft 300 and a rotor assembly 200. The stator assembly 100 is connected to the intermediate shaft 300, and the rotor assembly 200 is rotatably connected to the intermediate shaft 300, and the rotor assembly 200 is located outside the stator assembly 100.

[0031] The stator assembly 100 specifically includes a stator core 110, a stator support, and coils (not shown).

[0032] refer to Figure 6 The stator core 110 includes an annular inner connecting portion 111 and core units 112 disposed circumferentially on the outer wall of the inner connecting portion 111.

[0033] refer to Figure 2 The stator support includes a first side frame 120, a second side frame 130, and an inner support frame 140.

[0034] Along the axial direction of the stator assembly 100, the first side frame 120 and the second side frame 130 are located on both sides of the stator core 110, respectively. The outer periphery of the first side frame 120 and the second side frame 130 are formed with insulating teeth 101 corresponding to each core unit 112.

[0035] Each core unit 112 and the insulating teeth 101 on both sides are wound with coils. Some coils are connected to bridge wires, which are connected to power lines to supply power to the coils.

[0036] The inner support frame 140 is located inside the stator core 110 and is used to provide support for the stator core 110.

[0037] refer to Figure 8 , Figure 9 In order to facilitate the routing of the bridge cable, at least one of the first side frame 120 and the second side frame 130 is provided with a cable routing groove 131, which is located on the inner side of the first side frame 120 and / or the second side frame 130 away from the insulating tooth 101.

[0038] In other words, both the first side frame 120 and the second side frame 130 can be equipped with cable trays 131, or one of them can be equipped with a cable tray 131 according to actual needs.

[0039] In some embodiments of this application, reference is made to Figures 7-9 The first side frame 120 is a flat plate structure, and the wiring groove 131 is set on the second side frame 130. That is, the bridge wires connected on the coil converge into the wiring groove 131 inside the second side frame 130.

[0040] The cable tray 131 is provided with a cable bundling hole 132 for fixing the bridge cable in the cable tray 131.

[0041] The cable tray 131 is formed on the second side frame 130 and extends toward the first side frame 120.

[0042] Along the radial direction of the second side frame 130, the two sides of the cable tray 131 are the inner wall 133 and the outer wall, respectively.

[0043] In some embodiments of this application, the bottom of the wiring trough 131 is provided with a plurality of wire-binding holes 132 at intervals along its circumference, and the inner wall 133 of the wiring trough 131 is provided with wire-binding recesses 134 corresponding one-to-one with the wire-binding holes 132.

[0044] In other words, each cable tie hole 132 corresponds to a cable tie notch 134, and the cable routing groove 131 is fixed to the cable tie hole 132 by cable ties or other binding materials.

[0045] After the bridge cable is placed in the cable tray 131, the binding piece passes through the cable bundle hole 132 and the corresponding cable bundle notch 134 to fix the bridge cable, which helps to improve the stability of the bridge cable connection in the cable tray 131.

[0046] The cable tie notch 134 is used to limit the position of the cable tie to fix the corresponding position of the bridge cable and prevent the cable tie from shifting.

[0047] In some embodiments of this application, a cable outlet groove 135 is provided on the inner wall 133 of the cable tray 131, and the size of the cable outlet groove 135 is larger than the cable bundle recess 134.

[0048] The bridge wires connected to each coil are arranged along the wiring groove 131 and finally extend from the outlet groove 135 toward the first side frame 120.

[0049] The stator assembly 100 involved in this application has at least one of the first side frame 120 and the second side frame 130 of the stator support provided with a wiring groove 131. The wiring groove 131 is located on the inner side of the first side frame 120 and / or the second side frame 130 away from the insulating teeth 101. The bridge wires connected to the coil are arranged in the wiring groove 131 and are fixed to the wire bundle holes 132 by binding members according to the connection position of the bridge wires. This helps to make the bridge wires neatly routed, reduce the height of the coil position, and improve the heat dissipation performance of the motor.

[0050] refer to Figure 5 , Figure 10 as well as Figure 1 1. In some embodiments of this application, the inner support frame 140 is disposed inside the stator core 110 and the first side frame 120 to provide support for the stator core 110 and the first side frame 120.

[0051] In some embodiments of this application, the inner support frame 140 includes a support end face 141 and a support peripheral surface 142 formed on the outer periphery of the support end face 141. The support peripheral surface 142 is used to support the inner side of the first side frame 120 and the stator core 110.

[0052] In addition to providing support for the stator core 110 and the first side frame 120, the inner support frame 140 is also used to fix the stator assembly 100 on the intermediate shaft 300.

[0053] Specifically, a connecting sleeve 143 extending perpendicularly to the supporting end face 141 is formed on the supporting end face 141, and the stator assembly 100 is fixed to the intermediate shaft 300 through the connecting sleeve 143.

[0054] In some embodiments of this application, a first support ring portion 1421 and a second support ring portion 1422 are formed on the support peripheral surface 142.

[0055] The outer wall dimension of the first support ring 1421 is adapted to the inner diameter dimension of the first side frame 120, and the outer wall dimension of the second support ring 1422 is adapted to the inner diameter dimension of the stator core 110.

[0056] In some embodiments of this application, the radial dimension of the outer wall of the first support ring portion 1421 is larger than that of the second support ring portion 1422, and the two sides of the inner connecting portion 111 are respectively supported between the second support ring portion 1422 and the wiring groove 131.

[0057] The first support ring 1421 and the second support ring 1422 are used to support the first side frame 120 and the stator core 110, respectively. The radial dimension of the outer wall of the first support ring 1421 is larger than that of the second support ring 1422. Therefore, the side wall of the first support ring 1421 also plays an axial limiting role for the stator core 110, making the stator core 110 more stable.

[0058] In some embodiments of this application, a plurality of wire fixing holes 1412 and at least one wire routing hole 1411 are provided on the support end face 141, and the size of the wire routing hole 1411 is larger than that of the wire fixing hole 1412.

[0059] The bridge wire that comes out from the cable outlet 135 is connected to the power supply wire to power the coil. After the bridge wire is connected to the power supply wire, it is fixed to the wire fixing hole 1412 by the clamp (not shown). The power supply wire comes out from the cable routing hole 1411.

[0060] The bridge wires connected to each coil are bundled into multiple strands according to actual wiring requirements, and are used to connect to the power lines separately to facilitate wiring.

[0061] The two ends of the coil are connected to the power supply line through bridge wires, and the power supply line is fixed to the support end face 141 by clamps.

[0062] The connection method between the coil and the bridge wire and the power line is existing technology and is not the focus of this application, so it will not be described in detail here.

[0063] In some embodiments of this application, the clamp is U-shaped, and both ends of the clamp are fixed to the wire fixing hole 1412 by fastening screws.

[0064] The bridge cable and power cable are connected by soldering. The partitioned binding of the bridge cable effectively reduces the error rate of the wire harness during the soldering process.

[0065] Refer again Figure 1 , Figure 2 The intermediate shaft 300 is also equipped with a connecting bracket 400 for connecting to cycling equipment.

[0066] The rotor assembly 200 is rotatably connected to the intermediate shaft 300 via bearing components. Specifically, the connecting frame 400 and the rotor assembly 200 are respectively located on both sides of the stator assembly 100.

[0067] This motor is used in fitness equipment, such as, but not limited to, treadmills, exercise bikes, etc.

[0068] Fitness equipment includes a main body, on which a movable part is provided that can move relative to the main body. The movable part provides the fitness equipment with the means for users to perform fitness movements in order to achieve the fitness effect.

[0069] For example, when the fitness equipment is a treadmill, the moving part is the running belt set on the treadmill; when the fitness equipment is a stationary bike, the moving part is the pedals set on the stationary bike.

[0070] The motion unit is connected to the rotor assembly 200 via a transmission assembly, and the stator assembly 100 is fixedly connected to the main body of the equipment via a connecting frame 400 and an intermediate shaft 300.

[0071] The transmission component can be a belt, chain, or other transmission structure specifically designed for the fitness equipment. When the transmission component is a belt, a pulley is specifically provided on the rotor assembly 200 to connect with the transmission component and achieve the transmission purpose. When the transmission component is a chain, a gear is specifically provided on the rotor assembly 200 to connect with the transmission component.

[0072] Whenever possible, the various aspects and features described and shown in the specification can be applied individually, and these individual aspects can serve as the subject of a divisional application.

[0073] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0074] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A stator assembly, characterized in that, include: A stator core, comprising an annular inner connecting portion and core units circumferentially spaced on the outer wall of the inner connecting portion; The stator support includes a first side frame, a second side frame, and an inner support frame. The outer periphery of the first side frame and the second side frame are formed with insulating teeth corresponding to each of the core units. The inner support frame is disposed inside the stator core. At least one of the first side frame and the second side frame is provided with a wiring groove. The wiring groove is disposed inside the first side frame and / or the second side frame away from the insulating teeth. The wiring groove is provided with a wire bundling hole.

2. The stator assembly according to claim 1, characterized in that, The inner support frame is disposed inside the stator core and the first side frame, and the wiring groove is formed on the second side frame and extends toward the first side frame.

3. The stator assembly according to claim 1, characterized in that, The bottom of the wiring trough is provided with a plurality of wire-binding holes spaced apart along its circumference, and the inner wall of the wiring trough is provided with wire-binding recesses that correspond one-to-one with the wire-binding holes.

4. The stator assembly according to claim 1, characterized in that, The inner wall of the wiring trough is provided with a wire outlet groove, the size of which is larger than the wire bundle recess.

5. The stator assembly according to claim 1, characterized in that, The inner support frame includes a support end face and a support peripheral surface formed on the outer periphery of the support end face, the support peripheral surface being used to support the inner side of the first side frame and the stator core.

6. The stator assembly according to claim 5, characterized in that, A first support ring and a second support ring are formed on the support circumference. The outer diameter of the first support ring is adapted to the inner diameter of the first side frame, and the outer diameter of the second support ring is adapted to the inner diameter of the stator core.

7. The stator assembly according to claim 5, characterized in that, The support end face is provided with wire fixing holes and wire routing holes, and the size of the wire routing holes is larger than that of the wire fixing holes.

8. An electric motor, characterized in that... Includes the stator assembly as described in any one of claims 5-7 above.

9. The motor according to claim 8, characterized in that, Also includes: An intermediate shaft has a connecting sleeve extending perpendicularly to the supporting end face, and the stator assembly is fixed to the intermediate shaft through the connecting sleeve. A rotor assembly, which is rotatably connected to the intermediate shaft via bearing components; Each of the iron core units and the insulating teeth on both sides are respectively fitted with coils, some of the coils are connected to the bridge wires, and the bridge wires are fixed in the wiring groove by the binding members.

10. The motor according to claim 9, characterized in that, Also includes: The end of the bridge cable is used to connect to the power cord, and the power cord is fixed to the support end face by a clamp.

Images