Direct current stator and direct current motor

Abstract

The utility model discloses a direct current stator and a direct current motor. The direct current stator comprises a stator core, a first reel, a second reel, a wiring insertion piece, a stator winding, an outgoing line and an outgoing line. The stator core comprises a stator yoke and stator teeth arranged on the inner ring of the stator yoke. The first winding frame is arranged at one end of the stator core in a sleeving mode and comprises a framework and a winding part arranged on the inner ring of the framework, and the winding part covers the end faces of the stator teeth. And the second winding frame is arranged at the other end of the stator iron core. The wiring insertion piece is installed on the first winding frame. Each stator winding is wound on the stator teeth and the winding parts which are oppositely arranged, first winding frames are led out of the two ends of each stator winding from the ends, provided with the wiring insertion pieces, of the stator windings, and the end parts of the adjacent stator windings are connected with the single wiring insertion piece. And one end of each outgoing line is connected with a single wiring insertion piece. According to the direct current stator and the direct current motor in the embodiment of the utility model, the wire arrangement is simple, the effect is firm, and the wire arrangement efficiency of the direct current motor stator is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stator winding, and in particular relates to a DC stator and a DC motor. Background Art

[0002] At present, the DC motor stator mainly uses glue to fix the lead wires on the winding frame. However, in order to facilitate wire arrangement, most of the lead wires use a soft silicone insulation layer, so it is necessary to design a winding structure on the winding frame. However, since the winding structure cannot affect the wire package and the stator has size restrictions, it is impossible to provide sufficient space for the winding structure. Therefore, the current DC stator has the disadvantages of insufficient strength, complex winding methods, and still needs to be assisted by glue. Utility Model Content

[0003] The utility model aims to provide a DC stator and a DC motor, which can improve the wire management efficiency of the DC motor stator.

[0004] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a DC stator, which includes a stator core, a first winding frame, a second winding frame, a plurality of wiring plugs, a plurality of stator windings, a plurality of lead wires and a winding cover. The stator core includes a stator yoke and a plurality of stator teeth arranged on the inner ring of the stator yoke. The first winding frame is sleeved on one end of the stator core, and the first winding frame includes a frame and a winding portion arranged on the inner ring of the frame, and the winding portion covers the end surface of the stator tooth. The second winding frame is arranged at the other end of the stator core. A plurality of wiring plugs are installed on the first winding frame. Each stator winding is respectively wound on the relatively arranged stator teeth and the winding portion, and both ends of each stator winding are led out of the first winding frame from one end where the wiring plug is installed, and the ends of two adjacent stator windings are connected to a single wiring plug. One end of each lead wire is connected to a single wiring plug. The winding cover is arranged on the first winding frame, and a plurality of radially arranged slots penetrating the winding cover are arranged on the winding cover, and the other end of each lead-out wire leads out of the winding cover from a different slot.

[0005] In one or more embodiments of the utility model, the winding cover is provided with a central hole and a matching portion, the winding cover and the first winding frame enclose a receiving cavity, the receiving cavity receives at least part of the lead wires, and the matching portion and the winding portion cooperate in shape to prevent the lead wires from passing through the central hole.

[0006] In one or more embodiments of the present invention, a plurality of lead wires are led out of the winding cover from adjacent card slots.

[0007] In one or more embodiments of the present invention, the clamping groove is arranged in a fan shape along the radial direction, and is at least partially arranged on the peripheral side of the winding cover along the axial direction.

[0008] In one or more embodiments of the present invention, the card slot is provided with a limiting portion, and the width of the limiting portion in the card slot is smaller than the wire diameter of the lead-out wire.

[0009] In one or more embodiments of the present invention, the terminal plug includes a terminal piece and a tilted portion provided on the terminal piece, and the end of the stator winding is welded between the terminal piece and the tilted portion.

[0010] In one or more embodiments of the present invention, the wiring plug further includes a connecting portion provided on the wiring piece, a through hole is provided on the connecting portion, and one end of the lead wire is welded to the through hole.

[0011] In one or more embodiments of the present invention, the wiring plug further includes a plug-in portion, and the first winding frame further includes a plug-in socket provided on the frame, and the plug-in portion is plugged into the plug-in socket.

[0012] In one or more embodiments of the present invention, the plug-in portion and the tilting portion are connected to the same end of the wiring piece and extend in opposite directions.

[0013] In one or more embodiments of the present invention, stator slots are formed between adjacent stator teeth, and one end of the socket is installed in the stator slot and the other end is led out of the stator slot.

[0014] Another specific embodiment of the utility model further provides a DC motor, which includes the above-mentioned DC stator.

[0015] Compared with the prior art, the DC stator and DC motor of the utility model have a simple wire arrangement process for the DC stator, a strong wire arrangement effect, and can improve the wire arrangement efficiency of the DC motor stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only some implementations recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of a lead-in method of a DC stator in one embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of another lead-in method of a DC stator in one embodiment of the utility model;

[0019] Figure 3 This is an exploded structural diagram of a DC stator in one embodiment of the utility model;

[0020] Figure 4 This is a top view of the winding cover in one embodiment of the utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of a winding cover in one embodiment of the utility model;

[0022] Figure 6 It is a three-dimensional structural diagram of a winding frame and a wiring plug in one embodiment of the utility model.

[0023] Explanation of main figure marks: 1. stator core, 11. stator yoke, 12. stator teeth, 2. first winding frame, 21. skeleton, 22. winding part, 23. socket, 24. stator slot, 3. terminal plug, 31. terminal piece, 32. lifting part, 33. plug-in part, 34. connecting part, 341. through hole, 4. stator winding, 5. lead wire, 6. winding cover, 61. slot, 62. avoidance slot, 63. matching part, 64. center hole, 65. limiting part, 7. second winding frame. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementations. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the terms "inner", "outer", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figures 1 to 6As shown, a DC stator in one embodiment of the utility model comprises a stator core 1, a first winding frame 2, a second winding frame 7, a plurality of wiring plugs 3, a plurality of stator windings 4, a plurality of lead wires 5 and a winding cover 6. The stator core 1 comprises a stator yoke 11 and a plurality of stator teeth 12 arranged on the inner ring of the stator yoke 11. The first winding frame 2 is sleeved on one end of the stator core 1, and the first winding frame 2 comprises a frame 21 and a winding portion 22 arranged on the inner ring of the frame 21, and the winding portion 22 covers the end surface of the stator teeth 12. The second winding frame 7 is arranged at the other end of the stator core 1. A plurality of wiring plugs 3 are installed on the first winding frame 2. Each stator winding 4 is respectively wound on the stator teeth 12 and the winding portion 22 arranged opposite to each other, and both ends of each stator winding 4 are led out of the first winding frame 2 from one end where the wiring plug 3 is installed, and the ends of two adjacent stator windings 4 are connected to a single wiring plug 3. One end of each lead wire 5 is connected to a single wiring plug 3. The winding cover 6 is arranged on the first winding frame 2, and the winding cover 6 is provided with a plurality of radially arranged slots 61 that penetrate the winding cover 6. The other end of each lead wire 5 is led out of the winding cover 6 from different slots 61.

[0027] In the above embodiment, each stator winding 4 includes an enameled wire. When winding, the winding frame 2 is first installed to the two ends of the stator core 1, and then each enameled wire is respectively wound on two stator teeth 12 arranged opposite to each other and the winding portion 22 wrapped outside thereof, and both ends of each enameled wire are led out from one end where the wiring plug 3 is installed, so that two adjacent enameled wire ends can be quickly connected to the adjacent wiring plug 3. Then the wiring plug 3 is connected to the lead wire 5, and the lead wire 5 can be received in the winding cover 6 and led out through the card slot 61 at any position, or it can be directly led out, thereby providing a variety of lead-out methods for the lead wire 5 to meet the lead-out requirements of the lead wire 5 in different application scenarios. In addition, the lead wire 5 is pressed into the winding cover 6, which can also prevent the lead wire 5 from contacting the rotor of the motor. The above-mentioned wire arrangement process is simple, the wire arrangement effect is firm, and the wire arrangement efficiency of the DC stator of the motor is improved.

[0028] like Figure 5 As shown, the winding cover 6 is provided with a central hole 64 and a matching portion 63. The winding cover 6 and the first winding frame 2 are enclosed to form a receiving cavity, which receives at least part of the lead wire 5. The matching portion 63 and the winding portion 22 are matched in shape to prevent the lead wire 5 from passing through the central hole 64. The end of the winding portion 22 close to the center of the second winding frame 2 is a sheet-like structure, and the contour of the matching portion 63 coincides with the contour of the sheet-like structure. The two can be almost seamlessly spliced ​​to isolate the lead wire 5 between the sheet-like structure and the frame 21 to prevent the lead wire 5 from entering the central hole 64.

[0029] In one embodiment, each lead wire 5 is generally led out from a certain position. Specifically, each lead wire 5 can be led out of the winding cover 6 from the adjacent card slot 61, and the specific lead-out position can be selected according to the needs of the user. Of course, after the winding cover 6 is installed, according to the use requirements, the lead wire 5 can also be directly led out after being connected to the wiring plug 3, without being led out through the card slot 61.

[0030] In one embodiment, the slot 61 is arranged in a sector shape along the radial direction, and at least partially arranged along the axial direction on the peripheral side of the winding cover 6. In the above embodiment, the slot 61 has a large extension range, which is convenient for the lead-out wire 5 to be led out.

[0031] In one embodiment, in order to fix the lead wire 5 and prevent the lead wire 5 from moving randomly, the lead wire 5 can be clamped and fixed by the clamping slot 61. Specifically, the clamping slot 61 is provided with a limiting portion 65, the width of the limiting portion 65 in the clamping slot 61 is smaller than the wire diameter of the lead wire 5, and the position of the limiting portion 65 is close to the end of the clamping slot 61, so as to limit the radial movement of the lead wire 5 along the clamping slot 61.

[0032] Furthermore, in order to improve the adaptability of the slot 61 so that the slot 61 can fix the lead wires 5 of various sizes and specifications, the radial cross-section of the slot 61 can also be set to be tapered.

[0033] In order to make the slot 61 fit the lead wire 5 better, the end of the slot 61 close to the center of the winding cover 6 can be set to be an arc shape.

[0034] In one embodiment, in order to fix the winding cover 6, the winding cover 6 can be connected to the winding frame 2 by bolts or screws. Of course, other connection methods that are easy to disassemble, such as snap connection, can also be used.

[0035] like Figure 6 As shown, in one embodiment, the terminal plug 3 includes a terminal 31 and a tilting portion 32 provided on the terminal 31, and the end of the stator winding 4 is welded between the terminal 31 and the tilting portion 32. The tilting portion 32 is a bent plate-like structure, which can be integrally formed with the terminal 31 and then formed by a bending process. The tilting portion 32 and the terminal 31 can form a U-shaped structure, and after the end of the stator winding 4 is welded to the tilting portion 32, the U-shaped structure can accommodate and protect the end of the stator winding 4.

[0036] Further, such as Figure 6As shown, in order to facilitate the connection of the end of the lead wire 5 to the wiring plug 3. The wiring plug 3 also includes a connecting portion 34 provided on the wiring lug 31, and a through hole 341 is provided on the connecting portion 34, and one end of the lead wire 5 is welded at the through hole 341. The connecting portion 34 is a plate-like structure protruding relative to the wiring lug 31, which is convenient for operators to identify its position. The connecting portion 34 can be integrally formed with the wiring lug 31, or connected to the wiring lug 31 by welding or the like. There can be a certain angle between the connecting portion 34 and the wiring lug 31 to adjust the bending degree of the end of the lead wire 5.

[0037] In one embodiment, in order to facilitate the installation of the wiring plug 3, the wiring plug 3 further includes a plug-in portion 33, and the plug-in portion 33 is a plate-shaped structure. In addition, the first winding frame 2 further includes a plug-in seat 23 provided on the frame 21. After the plug-in seat 23 is provided, the wiring plug 3 can be plugged into the plug-in seat 23 through the plug-in portion 33. The plug-in seat 23 can be made of an insulating material, and a groove combined with the plug-in portion 33 can be provided on its surface.

[0038] Furthermore, the plug-in portion 33 and the tilting portion 32 are connected to the same end of the connecting piece 31 and extend in opposite directions. According to the above embodiment, when forming the tilting portion 32 and the plug-in portion 33, a certain end of the connecting piece 31 can be directly cut, and the end of the connecting piece 31 can be cut into two parts, three parts or more parts. When cutting into two parts, one part of the plate body can be bent to form the tilting portion 32, and the remaining part forms the plug-in portion 33. When cutting into three parts, one or two parts of the plate body can be bent to form the tilting portion 32, and the remaining part forms the plug-in portion 33.

[0039] like Figure 6 As shown, stator slots 24 are formed between adjacent stator teeth 12. To facilitate fixing and installing the socket 23 and reduce the space occupied by the socket 23, the socket 23 can be installed at the stator slot 24. Specifically, one end of the socket 23 is installed in the stator slot 24, and the other end of the socket 23 is led out from the stator slot 24 to facilitate the insertion of the plug-in portion 33.

[0040] like Figure 4 and Figure 5 As shown, the winding cover 6 is provided with an escape groove 62 for escaping the wiring plug 3. The escape groove 62 can be directly formed during the injection molding process of the winding cover 6, and can also be formed by cutting and other methods.

[0041] Another embodiment of the present invention further provides a DC motor, which includes the DC stator and other components such as a rotor.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A DC stator, characterized in that: include: A stator core (1) comprising a stator yoke (11) and a plurality of stator teeth (12) arranged on an inner ring of the stator yoke (11); A first winding frame (2) is arranged at one end of the stator core (1), the first winding frame (2) comprising a frame (21) and a winding portion (22) arranged on an inner ring of the frame (21), the winding portion (22) covering an end surface of the stator tooth (12); A second winding frame (7) is arranged at the other end of the stator core (1); A plurality of wiring plugs (3) mounted on the first winding frame (2); A plurality of stator windings (4), each of the stator windings (4) being respectively wound on the stator teeth (12) and the winding portion (22) arranged opposite to each other, both ends of each of the stator windings (4) being led out of the first winding frame (2) from one end on which the wiring plug (3) is installed, and the ends of two adjacent stator windings (4) are connected to a single wiring plug (3); and A plurality of lead wires (5), one end of each of the lead wires (5) being connected to a single wiring plug (3); A winding cover (6) is arranged on the first winding frame (2), and the winding cover (6) is provided with a plurality of radially arranged slots (61) that penetrate the winding cover (6), and the other end of each lead-out wire (5) is led out of the winding cover (6) from a different slot (61).

2. The DC stator according to claim 1, characterized in that: The winding cover (6) is provided with a central hole (64) and a matching portion (63). The winding cover (6) and the first winding frame (2) are enclosed to form a receiving cavity, and the receiving cavity receives at least part of the lead wire (5). The matching portion (63) and the winding portion (22) are matched in shape to prevent the lead wire (5) from passing through the central hole (64).

3. The DC stator according to claim 1, characterized in that: The plurality of lead-out wires (5) are led out of the winding cover (6) from adjacent slots (61).

4. The DC stator according to claim 1, characterized in that: The clamping groove (61) is arranged in a fan shape along the radial direction, and is at least partially arranged on the peripheral side of the winding cover (6) along the axial direction.

5. The DC stator according to claim 4, characterized in that: The clamping slot (61) is provided with a limiting portion (65), and the width of the limiting portion (65) in the clamping slot (61) is smaller than the wire diameter of the lead-out wire (5).

6. The DC stator according to claim 1, characterized in that: The terminal plug-in sheet (3) comprises a terminal sheet (31) and a raised portion (32) provided on the terminal sheet (31), and an end portion of the stator winding (4) is welded between the terminal sheet (31) and the raised portion (32).

7. The DC stator according to claim 6, characterized in that: The wiring plug (3) further comprises a connecting portion (34) arranged on the wiring piece (31), a through hole (341) is provided on the connecting portion (34), and one end of the lead wire (5) is welded to the through hole (341).

8. The DC stator according to claim 6, characterized in that: The wiring plug (3) further comprises a plug-in portion (33), and the first winding frame (2) further comprises a plug-in socket (23) arranged on the frame (21), and the plug-in portion (33) is plugged into the plug-in socket (23).

9. The DC stator according to claim 8, characterized in that: The plug-in portion (33) and the tilting portion (32) are connected to the same end of the wiring piece (31) and extend in opposite directions.

10. A DC motor, characterized in that: It comprises the DC stator as claimed in any one of claims 1 to 9.

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