Motor

Abstract

The present application relates to the technical field of motors, and provides a motor, comprising: a plurality of spaced first mounting slots are formed in a plastic part, a second mounting slot is formed between every two adjacent first mounting slots, a plurality of first claw fingers in a first claw pole are connected to a first claw disc, the first claw fingers are embedded into the corresponding first mounting slots, a plurality of second claw fingers in a second claw pole are connected to a second claw disc, and the second claw fingers are embedded into the corresponding second mounting slots. In this way, the first claw pole and the second claw pole can be integrally injection-molded, thereby effectively improving the strength of the claw poles, ensuring the stator assembly precision, effectively increasing the size of a coil when the coil is separately wound around the first claw pole and the second claw pole, and increasing the product torque. Therefore, the technical effects of improving the motor assembly precision and improving the product torque are achieved.

Description

A motor Technical Field

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

[0002] A motor is an electromagnetic device that converts or transmits electrical energy, primarily consisting of a stator and a rotor. A stepper motor, a special type of motor used for control, converts electrical pulses into corresponding angular or linear displacements.

[0003] In existing motor claw poles, two claw poles are typically mounted on a frame, with the coil wound around the frame before being assembled with the claw poles. However, this method of winding the coil around the frame and then assembling the claw poles, which are each mounted on the frame, reduces the internal space enclosed by the two claw poles, reducing their thickness and strength. This makes it difficult to ensure accurate stator installation and reduces the number of coil turns, which is not conducive to improving the product's torque.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Technical issues

[0005] The purpose of this application is to provide a motor that can solve the problem in the prior art that it is difficult to ensure the installation accuracy of the stator, which is not conducive to improving the torque of the product. Technical Solutions

[0006] The technical solution of the present application is as follows: A motor is provided, which includes: a first claw pole, a second claw pole and a plastic part, the plastic part is provided with a plurality of first mounting grooves arranged at intervals and a second mounting groove arranged between two adjacent first mounting grooves, the first claw pole includes a first claw disk and a plurality of first claw fingers, the plurality of first claw fingers are connected to the first claw disk, and the first claw fingers are embedded in the corresponding first mounting grooves, the second claw pole includes a second claw disk and a plurality of second claw fingers, the plurality of second claw fingers are connected to the second claw disk, the second claw fingers are embedded in the corresponding second mounting grooves, and the second claw fingers are arranged between two adjacent first claw fingers.

[0007] Optionally, the plastic part includes a first limiting portion and a second limiting portion arranged opposite to each other, and a shell respectively connecting the first limiting portion and the second limiting portion, and a plurality of supporting members are arranged between the first limiting portion and the second limiting portion, two adjacent supporting members and the first limiting portion enclose the first limiting groove, and two adjacent supporting members and the second limiting portion enclose the second limiting groove.

[0008] Optionally, the first limiting portion, the support member and the shell are enclosed to form a first through groove for the first claw finger to pass through, and the first through groove and the first limiting groove are communicated; the second limiting portion, the support member and the shell are enclosed to form a second through groove for the second claw finger to pass through, and the second through groove and the second limiting groove are communicated.

[0009] Optionally, the shell includes a main body and two extensions respectively connected to the main body, the main body is respectively connected to the first limiting portion and the second limiting portion, and the main body and the two extensions enclose a mounting groove for placing the coil.

[0010] Optionally, a rotating shaft and a magnetic steel connected to the rotating shaft, the rotating shaft passes through the shell, and the magnetic steel is located between the rotating shaft and the support member.

[0011] Optionally, the projection of the first limiting portion along the length extension direction of the rotating shaft on one of the extension portions is located on one of the extension portions, the first claw disk is connected to one of the extension portions, and the projection of the second limiting portion along the length extension direction of the rotating shaft on another of the extension portions is located on another of the extension portions, and the second claw disk is connected to the other of the extension portions.

[0012] Optionally, the first claw finger includes a first finger base and a first fingertip connected to the first finger base, the first finger base is connected to the first claw disk, and the first fingertip is recessed in the direction close to the rotating axis; the second claw finger includes a second finger base and a second fingertip connected to the second finger base, the second finger base is connected to the second claw disk, the second fingertip is recessed in the direction close to the rotating axis, and the second fingertip and the first fingertip are enclosed in a circular shape.

[0013] Optionally, the distance between the first finger root and the rotating shaft is expanded along the direction approaching the first claw disk, and the distance between the second finger root and the rotating shaft is expanded along the direction approaching the second claw disk.

[0014] Optionally, the extension lines of two adjacent support members intersect.

[0015] Optionally, the first claw finger is tapered in a direction approaching the second claw disk, the second claw finger is tapered in a direction approaching the first claw disk, and the first claw pole and the second claw pole are respectively integrally injection molded. Beneficial effects

[0016] The beneficial effects of the present application are as follows: the present application provides a motor, which is provided with a plurality of first mounting grooves arranged at intervals on a plastic part, and a second mounting groove is provided between two adjacent first mounting grooves. The plurality of first claw fingers in the first claw pole are connected to the first claw disk, and the first claw fingers are embedded in the corresponding first mounting grooves. The plurality of second claw fingers in the second claw pole are connected to the second claw disk, and the second claw fingers are embedded in the corresponding second mounting grooves. A second claw finger is provided between two adjacent first claw fingers. In this way, the plurality of first claw fingers in the first claw pole are embedded in the corresponding first mounting grooves on the plastic part, and the plurality of second claw fingers in the second claw pole are embedded in the corresponding second mounting grooves on the plastic part. The first claw pole and the second claw pole can be injection molded as one piece, which effectively improves the strength of the claw pole, is beneficial to ensuring the assembly accuracy of the stator, and when the coil is wound around the first claw pole and the second claw pole respectively, the size of the coil can be effectively increased, which is beneficial to improving the torque of the product. Thus, the technical effect of improving the assembly accuracy of the motor and improving the torque of the product is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a first claw pole, a second claw pole, and a first plastic part in a motor provided by an embodiment of the present application;

[0018] FIG2 is a schematic structural diagram of a motor shaft according to an embodiment of the present invention;

[0019] FIG3 is an exploded schematic diagram of a motor provided in an embodiment of the present application;

[0020] FIG4 is a schematic structural diagram of a motor provided in an embodiment of the present application;

[0021] FIG5 is a cross-sectional view of a motor provided in an embodiment of the present application;

[0022] FIG6 is a schematic structural diagram of a first limiting groove, a second limiting groove, and a first through groove in a motor provided in an embodiment of the present application;

[0023] FIG7 is a schematic structural diagram of a second through slot in a motor provided in an embodiment of the present application;

[0024] FIG8 is a schematic structural diagram of a first claw plate and a second claw plate in a motor provided in an embodiment of the present application;

[0025] FIG9 is a schematic structural diagram of a first finger base and a first finger tip in a motor provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0026] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0027] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0028] In the embodiments of this application, "at least one" refers to one or more; "a plurality" refers to two or more. In the description of this application, the terms "first," "second," "third," etc. are used only for the purpose of distinguishing descriptions and should not be understood as indicating or implying relative importance or order.

[0029] References to "one embodiment" or "some embodiments" described in this specification mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, in this specification, the terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. It should be noted that in the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0030] It should be pointed out that, in the embodiments of the present application, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. At the same time, "connection" in the embodiments of the present application may also be understood as electrical connection, and the connection between two electrical elements may be a direct or indirect connection between the two electrical elements. For example, A is connected to B, which may be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical elements. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present application are for illustrative purposes only and are not intended to limit the present application.

[0031] A motor provided in an embodiment of the present application, please refer to Figures 1 to 9. A motor provided in an embodiment of the present application includes a first claw pole 5, a second claw pole 6 and a plastic part 7, and the plastic part 7 is provided with a plurality of first mounting grooves 753 arranged at intervals, and a second mounting groove 753 provided between two adjacent first mounting grooves 753. The first claw pole 5 includes a first claw disk 51 and a plurality of first claw fingers 52, and the plurality of first claw fingers 52 are connected to the first claw disk 51, and the first claw fingers 52 are embedded in the corresponding first mounting grooves 753. The second claw pole 6 includes a second claw disk 61 and a plurality of second claw fingers 62, and the plurality of second claw fingers 62 are connected to the second claw disk 61, and the second claw fingers 62 are embedded in the corresponding second mounting grooves 753. A second claw finger 62 is provided between two adjacent first claw fingers 52, that is, the first claw fingers 52 and the second claw fingers 62 are alternately distributed along the outside of the rotating shaft 2.

[0032] The plastic part 7 is disposed outside the rotating shaft 2, and the magnet 1 is located between the rotating shaft 2 and the plastic part 7. The plastic part 7 includes a first limiting groove 71 and a second limiting groove 72. The first limiting grooves 71 are arranged in a plurality of intervals, and the second limiting groove 72 is disposed between two adjacent first limiting grooves 71. The first claw pole 5 includes a first claw plate 51 and a plurality of first claw fingers 52. The plurality of first claw fingers 52 are connected to the first claw plate 51. Each first claw finger 52 is embedded in a corresponding first limiting groove 71. The first limiting groove 71 has a space for accommodating the first claw finger 52. The second claw pole 6 includes a second claw plate 61 and a plurality of second claw fingers 62. The plurality of second claw fingers 62 are connected to the second claw plate 61. Each second claw finger 62 is embedded in a corresponding second limiting groove 72. The second limiting groove 72 has a space for accommodating the second claw finger 62.

[0033] In this embodiment, by providing a plurality of spaced-apart first mounting slots 753 on the plastic member 7 and providing a second mounting slot 753 between two adjacent first mounting slots 753, the plurality of first claw fingers 52 in the first claw pole 5 are connected to the first claw plate 51 and embedded in the corresponding first mounting slots 753. The plurality of second claw fingers 62 in the second claw pole 6 are connected to the second claw plate 61 and embedded in the corresponding second mounting slots 753, with a second claw finger 62 provided between two adjacent first claw fingers 52. In this manner, the plurality of first claw fingers 52 in the first claw pole 5 are embedded in the corresponding first mounting slots 753 on the plastic member 7, and the plurality of second claw fingers 62 in the second claw pole 6 are embedded in the corresponding second mounting slots 753 on the plastic member 7. This allows the first claw pole 5 and the second claw pole 6 to be integrally injection molded, effectively improving the strength of the claw poles and facilitating stator assembly accuracy. When the coil 4 is wound separately around the first and second claw poles 5 and 6, the size of the coil 4 can be increased, thereby improving the torque of the product. Thereby achieving the technical effect of improving the assembly accuracy of the motor and increasing the torque of the product.

[0034] As an embodiment, please refer to Figures 1 and 2, the plastic part 7 includes a first limiting portion 73, a second limiting portion 74 and a shell 75. The first limiting portion 73 and the second limiting portion 74 are arranged opposite to each other, and the shell 75 is connected to the first limiting portion 73 and the second limiting portion 74 respectively. A plurality of support members 76 are arranged between the first limiting portion 73 and the second limiting portion 74. The first limiting portion 73 and two adjacent support members 76 enclose the above-mentioned first limiting groove 71, and the second limiting portion 74 and two adjacent support members 76 enclose the above-mentioned second limiting groove 72.

[0035] As an embodiment, the first limiting portion 73, the support member 76, and the housing 75 collectively form a first through-slot 77. The first claw finger 52 extends through the first through-slot 77. The first through-slot 77 and the first limiting slot 71 are interconnected, so that the first claw finger 52 extends into the first limiting slot 71 after extending through the first through-slot 77. The second limiting portion 74, the support member 76, and the housing 75 collectively form a second through-slot 78. The second claw finger 62 extends through the second through-slot 78. The second through-slot 78 and the second limiting slot 72 are interconnected, so that the second claw finger 62 extends into the second limiting slot 72 after extending through the second through-slot 78.

[0036] As an embodiment, please refer to Figure 3, the shell 75 includes a main body 751 and two extensions 752, the two extensions 752 are respectively connected to the main body 751, and the main body 751 is respectively connected to the first limiting portion 73 and the second limiting portion 74, the main body 751 and the two extensions 752 are surrounded to form an installation groove 753, and the interior of the installation groove 753 has a space for placing the coil 4.

[0037] In some embodiments, the first limiting portion 73 is projected onto one extension portion 752 along the longitudinal extension direction of the rotating shaft 2, and the first claw plate 51 is connected to the one extension portion 752. The second limiting portion 74 is projected onto the other extension portion 752 along the longitudinal extension direction of the rotating shaft 2, and the second claw plate 61 is connected to the other extension portion 752.

[0038] In some embodiments, after the first claw pole 5 and the second claw pole 6 are integrally injection-molded, the coil 4 can be wound integrally with the first claw pole 5 and the second claw pole 6. The first claw finger 52 is tapered in a direction approaching the second claw plate 61, and the second claw finger 62 is tapered in a direction approaching the first claw plate 51.

[0039] In some embodiments, referring to Figures 2 to 9 , the first claw finger 52 includes a first finger base 521 and a first finger tip 522. The first finger tip 522 is connected to the first finger base 521, which is connected to the first claw plate 51. The first finger tip 522 is concave along the direction approaching the rotating shaft 2. The second claw finger 62 includes a second finger base 621 and a second finger tip 622. The second finger tip 622 is connected to the second finger base 621, which is connected to the second claw plate 61. The second finger tip 622 is concave along the direction approaching the rotating shaft 2. The second finger tip 622 and the first finger tip 522 enclose a circular ring. This can increase the internal space of the circular ring, providing more space for accommodating the rotating shaft 2 and the magnetic steel 1 arranged circumferentially around the rotating shaft 2.

[0040] As an embodiment, the distance between the first finger base 521 and the rotating shaft 2 gradually increases as it approaches the first claw plate 51, so that the first finger base 521 is curved. The distance between the second finger base 621 and the rotating shaft 2 gradually increases as it approaches the second claw plate 61, so that the second finger base 621 is curved.

[0041] As an embodiment, a first gap 5221 is left between the first fingertip portion 522 and the second claw plate 61, and a second gap 6221 is left between the second fingertip portion 622 and the first claw plate 51. The spacing of the first gap 5221 is equal to the spacing of the second gap 6221, so that the connection between two adjacent support members 76 located within the spacing has a larger width.

[0042] In some embodiments, the extension lines of the two support members 76 on both sides of the first claw finger 52 intersect with each other. Providing the intersecting support members 76 helps to improve the strength of the overall structure of the first claw pole 5, the second claw pole 6, the plastic member 7 and the support members 76.

[0043] As an embodiment, referring to Figures 3 to 5, a motor provided in an embodiment of the present application further includes a housing 3. Those skilled in the art will appreciate that the specific structure of the housing 3 in the motor provided in an embodiment of the present application is not limited. It is only necessary to place a plastic part 7 provided with a coil 4, a first claw pole 5, and a second claw pole 6 inside the housing 3, and place the rotating shaft 2 and the magnet 1 arranged around the rotating shaft 2 inside the plastic part 7. The rotating shaft 2 and the magnet 1 arranged around the rotating shaft 2 can be driven to rotate inside the housing 3 by the energized coil 4.

[0044] In some embodiments, referring to FIG. 3 , a motor provided by an embodiment of the present invention further includes a third claw pole 30, a fourth claw pole 301, another housing 40, another coil 50, and another plastic component 60. Since the third claw pole 30 has the same structure and principle as the first claw pole 5, a detailed description thereof will not be repeated here. Since the fourth claw pole 301 has the same structure and principle as the second claw pole 6, a detailed description thereof will not be repeated here. Since the structure and principle of the other housing 40 is the same as the housing 3, a detailed description thereof will not be repeated here. Since the structure and principle of the other coil 50 is the same as the coil 4, a detailed description thereof will not be repeated here. Since the structure and principle of the other plastic component 60 is the same as the plastic component 7, a detailed description thereof will not be repeated here. By respectively attaching the third claw pole 30 and the fourth claw pole 301 to the other plastic component 60, attaching the other coil 50 to the exterior of the other plastic component 60, and sleeved the other housing 40 on the exterior of the other coil 50, and arranging the plastic component 7 and the other plastic component 60 vertically, the motor can accommodate a longer rotating shaft 2 and a longer magnet 1 disposed around the rotating shaft 2.

[0045] As an implementation mode, the motor provided in the embodiment of the present application adopts an integrated magnetic steel 1, that is, the magnetic steel 1 in the form of a cylinder is sleeved on the rotating shaft 2, the rotating shaft 2 is fixedly connected to the magnetic steel 1, and both ends of the rotating shaft 2 extend to the outside of the magnetic steel 1.

[0046] The above is only an implementation method of the present application. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present application, but these all fall within the scope of protection of the present application.

Claims

1. A motor, characterized in that: The motor includes: a first claw pole, a second claw pole and a plastic part, the plastic part is provided with a plurality of first mounting grooves arranged at intervals and a second mounting groove arranged between two adjacent first mounting grooves, the first claw pole includes a first claw plate and a plurality of first claw fingers, the plurality of first claw fingers are connected to the first claw plate, and the first claw fingers are embedded in the corresponding first mounting grooves, the second claw pole includes a second claw plate and a plurality of second claw fingers, the plurality of second claw fingers are connected to the second claw plate, the second claw fingers are embedded in the corresponding second mounting grooves, and the second claw fingers are arranged between two adjacent first claw fingers.

2. The motor according to claim 1, characterized in that: The plastic part includes a first limiting portion and a second limiting portion arranged opposite to each other, and a shell respectively connecting the first limiting portion and the second limiting portion. A plurality of supporting members are arranged between the first limiting portion and the second limiting portion. Two adjacent supporting members and the first limiting portion enclose the first limiting groove, and two adjacent supporting members and the second limiting portion enclose the second limiting groove.

3. The motor according to claim 2, characterized in that: The first limiting portion, the support member and the shell are enclosed to form a first through groove for the first claw finger to pass through, and the first through groove and the first limiting groove are communicated; the second limiting portion, the support member and the shell are enclosed to form a second through groove for the second claw finger to pass through, and the second through groove and the second limiting groove are communicated.

4. The motor according to claim 2, characterized in that: The shell includes a main body and two extensions respectively connected to the main body. The main body is respectively connected to the first limiting portion and the second limiting portion. The main body and the two extensions enclose a mounting groove for placing the coil.

5. The motor according to claim 2, characterized in that The motor further includes: a rotating shaft and a magnetic steel connected to the rotating shaft, the rotating shaft passes through the housing, and the magnetic steel is located between the rotating shaft and the support member.

6. The motor according to claim 5, characterized in that: The projection of the first limiting portion along the length extension direction of the rotating shaft on one of the extension portions is located on one of the extension portions, the first claw disk is connected to one of the extension portions, the projection of the second limiting portion along the length extension direction of the rotating shaft on another of the extension portions is located on the other extension portion, and the second claw disk is connected to the other of the extension portions.

7. The motor according to claim 5, characterized in that: The first claw finger includes a first finger base and a first fingertip connected to the first finger base, the first finger base is connected to the first claw disk, and the first fingertip is recessed in the direction close to the rotating axis; the second claw finger includes a second finger base and a second fingertip connected to the second finger base, the second finger base is connected to the second claw disk, the second fingertip is recessed in the direction close to the rotating axis, and the second fingertip and the first fingertip are surrounded in a circular shape.

8. The motor according to claim 7, characterized in that: The distance between the first finger base and the rotating shaft increases along the direction approaching the first claw disk, and the distance between the second finger base and the rotating shaft increases along the direction approaching the second claw disk.

9. The motor according to claim 2, characterized in that: The extension lines of two adjacent support members intersect.

10. The motor according to claim 1, characterized in that: The first claw finger is tapered in a direction approaching the second claw plate, the second claw finger is tapered in a direction approaching the first claw plate, and the first claw pole and the second claw pole are integrally injection-molded.

Images