Motor

Abstract

The utility model provides a motor, which belongs to the technical field of motors and is characterized in that a plurality of first limiting grooves are arranged on a plastic part at intervals, second limiting grooves are arranged between two adjacent first limiting grooves, a plurality of first claw fingers in a first claw pole are connected with a first claw disc, and a plurality of second claw fingers in a second claw pole are connected with a second claw disc. The first claw fingers are embedded into the corresponding first limiting grooves, the second claw fingers in the second claw pole are connected with the second claw disc, and the second claw fingers are embedded into the corresponding second limiting grooves. In this way, the first claw pole and the second claw pole can be subjected to integrated injection molding, the strength of the claw poles is effectively improved, the assembly precision of the stator can be guaranteed, when the coil is wound with the first claw pole and the second claw pole, the size of the coil can be effectively increased, and the torque of a product can be improved. Therefore, the technical effects of improving the assembly precision of the motor and improving the torque of a product are achieved.

Description

[Technical field]

[0001] The utility model relates to the technical field of motors, in particular to a motor. [Background technology]

[0002] A motor is an electromagnetic device that realizes the conversion or transmission of electric energy, and is mainly composed of a stator and a rotor. As a special type of motor, a stepper motor is a control motor that converts electrical pulse signals into corresponding angular displacement or linear displacement.

[0003] In the prior art, the claw poles of the motor are generally made by respectively setting two claw poles on the frame, winding the coil on the frame and then assembling the claw poles. However, when the coil is wound on the frame and then assembled with the claw poles respectively set on the frame, the internal space enclosed by the two claw poles is small, which will reduce the thickness of the claw poles, resulting in low strength of the claw poles, making it difficult to ensure the installation accuracy of the stator, and at the same time reducing the number of turns of the coil, which is not conducive to improving the torque of the product.

[0004] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. [Utility Model Content]

[0005] The utility model aims to provide a motor which 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.

[0006] The technical solution of the utility model is as follows: a motor is provided, the motor comprising: a first claw pole, a second claw pole and a plastic part, the plastic part is provided with a plurality of first limiting grooves arranged at intervals and a second limiting groove arranged between two adjacent first limiting grooves, the first claw pole comprises a first claw disk and a plurality of first claw fingers, the plurality of first claw fingers are connected to the first claw disk, the first claw fingers are embedded in the corresponding first limiting grooves, the second claw pole comprises 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 limiting 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 that are relatively arranged, and a shell that respectively connects 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, and 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 combined to form a first through groove for the first claw finger to pass through, and the first through groove is communicated with the first limiting groove; the second limiting portion, the support member and the shell are combined to form a second through groove for the second claw finger to pass through, and the second through groove is communicated with the second limiting groove.

[0009] Optionally, the shell includes a main body and two extension parts respectively connected to the main body, the main body is respectively connected to the first limiting part and the second limiting part, and the main body and the two extension parts 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 extending portions is located on the one extending portion, the first claw plate is connected to the one extending portion, the projection of the second limiting portion along the length extension direction of the rotating shaft on the other extending portion is located on the other extending portion, and the second claw plate is connected to the other extending portion.

[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 a 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 a direction close to the rotating axis, and the second fingertip and the first fingertip are surrounded in a circular shape.

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

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

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

[0016] The beneficial effect of the utility model is that the utility model provides a motor, by providing a plurality of first limiting grooves arranged at intervals on a plastic part, and providing a second limiting groove between two adjacent first limiting grooves, a plurality of the 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 limiting grooves, a 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 limiting grooves, and a second claw finger is provided between two adjacent first claw fingers. In this way, a plurality of first claw fingers in the first claw pole are embedded in the corresponding first limiting grooves on the plastic part, and a plurality of second claw fingers in the second claw pole are embedded in the corresponding second limiting grooves on the plastic part, so that the first claw pole and the second claw pole can be integrally injection molded, effectively improving the strength of the claw pole, which is beneficial to ensuring the assembly accuracy of the stator, and when the coil is wound with 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. Thereby, the technical effect of improving the assembly accuracy of the motor and the torque of the product is achieved.

Brief Description of the Drawings

[0017] Figure 1 A schematic diagram of the structure of a first claw pole, a second claw pole and a first plastic part in a motor provided by an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a rotating shaft of a motor provided in an embodiment of the utility model;

[0019] Figure 3 An exploded schematic diagram of a motor provided by an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a motor provided by an embodiment of the utility model;

[0021] Figure 5 A cross-sectional view of a motor provided by an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the structure of a first limiting groove, a second limiting groove and a first through groove in a motor provided by an embodiment of the utility model;

[0023] Figure 7 A schematic diagram of the structure of a second through slot in a motor provided by an embodiment of the utility model;

[0024] Figure 8 A schematic diagram of the structure of a first claw disk and a second claw disk in a motor provided by an embodiment of the utility model;

[0025] Fig. 9 A schematic structural diagram of a first finger base and a first finger tip in a motor provided in an embodiment of the utility model. [Specific implementation method]

[0026] The embodiments of the present application are described in detail below, and 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 cannot be understood 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, rather than 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 work are within the scope of protection of the present application.

[0028] In the embodiments of the present application, at least one refers to one or more; multiple refers to two or more. In the description of the present application, the words "first", "second", "third", etc. are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0029] References to "one embodiment" or "some embodiments" etc. 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 may 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 invention, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may 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 can also be understood as electrical connection, and the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, A is connected to B, which can be either a direct connection between A and B or an indirect connection between A and B through one or more other electrical components. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

[0031] The utility model provides a motor, see Figures 1 to 9 A motor provided by an embodiment of the utility model includes a first claw pole 5, a second claw pole 6 and a plastic part 7, on which a plurality of first limiting grooves 71 arranged at intervals and a second limiting groove 72 arranged between two adjacent first limiting grooves 71 are provided, 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, and the first claw fingers 52 are embedded in the corresponding first limiting grooves 71, 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, and the second claw fingers 62 are embedded in the corresponding second limiting grooves 72, and a second claw finger 62 is arranged 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 arranged outside the rotating shaft 2, and the magnetic steel 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, wherein a plurality of first limiting grooves 71 are arranged at intervals from each other, and the second limiting groove 72 is arranged 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, wherein the plurality of first claw fingers 52 are connected to the first claw plate 51, and each first claw finger 52 is embedded in a corresponding first limiting groove 71, and 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, wherein the plurality of second claw fingers 62 are connected to the second claw plate 61, and each second claw finger 62 is embedded in a corresponding second limiting groove 72, and the second limiting groove 72 has a space for accommodating the second claw finger 62.

[0033] In this embodiment, by providing a plurality of first limiting grooves 71 arranged at intervals on the plastic part 7, and providing a second limiting groove 72 between two adjacent first limiting grooves 71, a plurality of the first claw fingers 52 in the first claw pole 5 are connected to the first claw plate 51, and the first claw fingers 52 are embedded in the corresponding first limiting grooves 71, a plurality of second claw fingers 62 in the second claw pole 6 are connected to the second claw plate 61, and the second claw fingers 62 are embedded in the corresponding second limiting grooves 72, and a second claw finger 62 is provided between two adjacent first claw fingers 52. In this way, a plurality of first claw fingers 52 in the first claw pole 5 are embedded in the corresponding first limiting grooves 71 on the plastic part 7, and a plurality of second claw fingers 62 in the second claw pole 6 are embedded in the corresponding second limiting grooves 72 on the plastic part 7, so that the first claw pole 5 and the second claw pole 6 can be integrally injection molded, effectively improving the strength of the claw pole, which is conducive to ensuring the assembly accuracy of the stator, and when the coil 4 is wound with the first claw pole 5 and the second claw pole 6 respectively, the size of the coil 4 can be effectively increased, which is conducive to 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 implementation, see Figure 1 and Figure 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. The shell 75 is connected to the first limiting portion 73 and the second limiting portion 74 respectively. A plurality of supporting members 76 are arranged between the first limiting portion 73 and the second limiting portion 74. The first limiting portion 73 and two adjacent supporting members 76 enclose the above-mentioned first limiting groove 71, and the second limiting portion 74 and two adjacent supporting 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 enclose a first through slot 77, the first claw finger 52 passes through the first through slot 77, and the first through slot 77 and the first limiting slot 71 are communicated with each other, so that the first claw finger 52 passes through the first through slot 77 and then extends into the first limiting slot 71. The second limiting portion 74, the support member 76 and the housing 75 enclose a second through slot 78, the second claw finger 62 passes through the second through slot 78, and the second through slot 78 and the second limiting slot 72 are communicated with each other, so that the second claw finger 62 passes through the second through slot 78 and then extends into the second limiting slot 72.

[0036] As an implementation, see Figure 3 The shell 75 includes a main body 751 and two extension parts 752. The two extension parts 752 are respectively connected to the main body 751. At the same time, the main body 751 is respectively connected to the first limiting part 73 and the second limiting part 74. The main body 751 and the two extension parts 752 are surrounded to form an installation groove 753. The interior of the installation groove 753 has a space for placing the coil 4.

[0037] In some embodiments, the projection of the first limiting portion 73 on one extension portion 752 along the length extension direction of the rotating shaft 2 is located on one extension portion 752, and the first claw plate 51 is connected to one extension portion 752. The projection of the second limiting portion 74 on the other extension portion 752 along the length extension direction of the rotating shaft 2 is located on the other extension portion 752, 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 along the direction close to the second claw plate 61, and the second claw finger 62 is tapered along the direction close to the first claw plate 51.

[0039] In some embodiments, see Figures 2 to 9 The first claw finger 52 includes a first finger root portion 521 and a first finger tip portion 522, the first finger tip portion 522 is connected to the first finger root portion 521, the first finger root portion 521 is connected to the first claw plate 51, and the first finger tip portion 522 is concave along the direction close to the rotating shaft 2. The second claw finger 62 includes a second finger root portion 621 and a second finger tip portion 622, the second finger tip portion 622 is connected to the second finger root portion 621, the second finger root portion 621 is connected to the second claw plate 61, and the second finger tip portion 622 is concave along the direction close to the rotating shaft 2. The second finger tip portion 622 and the first finger tip portion 522 are enclosed in a circular ring shape, which can increase the internal space of the circular ring shape, and provide a larger 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 root 521 and the rotating shaft 2 gradually increases along the direction close to the first claw plate 51, so that the first finger root 521 is curved. The distance between the second finger root 621 and the rotating shaft 2 gradually increases along the direction close to the second claw plate 61, so that the second finger root 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 is helpful 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 implementation, see Figures 3 to 5 A motor provided in an embodiment of the utility model further includes a housing 3. Those skilled in the art can understand that the specific structure of the housing 3 in the motor provided in an embodiment of the utility model 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 a rotating shaft 2 and a magnetic steel 1 sleeved around the rotating shaft 2 inside the plastic part 7. The rotating shaft 2 and the magnetic steel 1 sleeved around the rotating shaft 2 can be driven to rotate inside the housing 3 by the energized coil 4.

[0044] In some embodiments, see Figure 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 part 60. Since the third claw pole 30 has the same structure and principle as the first claw pole 5, they are not described here. Since the fourth claw pole 301 has the same structure and principle as the second claw pole 6, they are not described here. Since the structure and principle of another housing 40 are the same as those of the housing 3, they are not described here. Since the structure and principle of another coil 50 are the same as those of the coil 4, they are not described here. Since the structure and principle of another plastic part 60 are the same as those of the plastic part 7, they are not described here. By installing the third claw pole 30 and the fourth claw pole 301 on another plastic part 60 respectively, installing another coil 50 on the outside of the other plastic part 60, and another housing 40 being sleeved on the outside of another coil 50, after the plastic part 7 and another plastic part 60 are installed in the vertical direction, it can adapt to a longer rotating shaft 2 and a longer magnetic steel 1 arranged around the rotating shaft 2.

[0045] As an implementation mode, the magnetic steel 1 in a motor provided in an embodiment of the utility model adopts an integrated magnetic steel 1, that is, the magnetic steel 1 which is 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 invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

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 limiting grooves arranged at intervals and a second limiting groove arranged between two adjacent first limiting 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, the first claw fingers are embedded in the corresponding first limiting 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 limiting 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 that are arranged opposite to each other, and a shell that connects the first limiting portion and the second limiting portion respectively. 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 collectively formed to form a first through groove for the first claw finger to pass through, and the first through groove is communicated with the first limiting groove; the second limiting portion, the support member and the shell are collectively formed to form a second through groove for the second claw finger to pass through, and the second through groove is communicated with the second limiting groove.

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

5. The motor according to claim 4, characterized in that The motor further comprises: 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 supporting 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 extending portions is located on the one extending portion, the first claw plate is connected to the one extending portion, the projection of the second limiting portion along the length extension direction of the rotating shaft on the other extending portion is located on the other extending portion, and the second claw plate is connected to the other extending portion.

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 a 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 a 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 root and the rotating shaft increases along a direction approaching the first claw disk, and the distance between the second finger root and the rotating shaft increases along a 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 along a direction approaching the second claw plate, the second claw finger is tapered along a direction approaching the first claw plate, and the first claw pole and the second claw pole are respectively integrally injection-molded.

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