CN216794731U - Stator winding structure - Google Patents

Abstract

The utility model relates to a stator winding structure which comprises a stator framework, an iron core and a terminal, wherein the iron core and the terminal are arranged on the stator framework, at least one group of windings are wound on the stator framework, the terminal is provided with a wire accommodating structure, the wire accommodating structure is arranged at the near end and/or the far end of the terminal, and the wire accommodating structure is used for fixing the windings or fixing a lead. According to the utility model, the wire accommodating structure is arranged on the terminal, the wire accommodating structure can fasten the winding or the lead wire and electrically connect the winding and the lead wire, and the manual processes of cutting, removing paint, stranding, welding and wire arrangement in the prior art are replaced.

Description

Stator winding structure

Technical Field

The utility model relates to the technical field of motors, in particular to a stator winding structure.

Background

The motor stator is an important component of a generator, a starter and other motors, and consists of an iron core, a stator winding and a machine base. Stator winding refers to the winding mounted on the stator, i.e. the copper wire wound on the stator. A winding is a generic term for a phase or an entire electromagnetic circuit formed by a plurality of coils or coil groups.

In the prior art, the traditional small integral permanent magnet synchronous motor stator is generally produced by combining winding with manual paint stripping and welding, and the specific process scheme is as follows: s1, winding the stator; s2, cutting the enameled wire; s3, removing paint from the end of the wire; s4, twisting the enameled wire and the lead wire; s5, welding; s6, arranging wires; however, the winding process in the above conventional process has the following problems:

(1) cutting, depainting, stranding, welding, reason line among the prior art technology all need a large amount of costs of labor, can't replace the manual work with automatic machine, and manual production can't control the product quality completely moreover, has the wiring confusion, the easy pine takes off, the problem of rosin joint, consumes a large amount of man-hours, auxiliary material, and productivity is low.

(2) The enameled wire leather at the bending part of the stator framework structure in the prior art has large loss, and the mechanical property, weather resistance, insulativity and heat resistance of the enameled wire are influenced, so that safety accidents are easily caused.

In addition, application number is 21520746607.4, the chinese utility model patent of the name "stator winding structure with terminal clamp", it is through terminal clamp fixed multicore line and single core wire to establish heat-shrinkable tube's mode at the outside cover of terminal clamp, although avoided copper line fracture, pine take off, the problem of rosin joint, nevertheless owing to need the cover to establish heat-shrinkable tube and insulate, this kind of fixed mode is not suitable for automated production, and heat-shrinkable tube also has easy damaged, the drawback of easy pine taking off simultaneously.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a stator winding structure to solve one or more problems of the prior art.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

stator wire winding structure, including stator skeleton and iron core, the terminal of setting on stator skeleton, the last at least a set of wire winding of stator skeleton, the terminal has holds the line structure, hold the line structure set up in the near-end and/or the distal end of terminal, it is used for fixing to hold the line structure the wire winding or be used for fixed lead wire.

Further, the wire containing structure comprises a first wire containing part, the first wire containing part comprises a protruding part extending along the outer side of the terminal, and a first wire containing opening is formed between the protruding part and the terminal.

Further, the terminal outer side is provided with a projection matched with the bulge.

Furthermore, the line containing structure comprises a second line containing part, the second line containing part comprises a cylinder, and a second line containing port is formed in the cylinder.

Furthermore, the far end of the stator framework is provided with at least two grooves, and the groove width of each groove is larger than the outer diameter of the winding.

Further, the groove is disposed lower than the terminal.

Further, the stator skeleton distal end is equipped with the extension, the extension is equipped with a plurality of bosss, and is adjacent form between the boss the groove, the width of boss with the groove depth in groove is the same, and the length of boss is the same with the length in groove, the boss is used for keeping apart the wire winding.

Furthermore, chamfers are respectively arranged on the extension part and the boss.

Furthermore, the terminal and the stator framework are flexibly connected through an elastic device.

Further, the elastic device comprises a spring plate, the proximal end and the distal end of the spring plate are fixed by the same fastener, and the distance between the proximal end and the distal end of the spring plate is adjustable by the fastener.

Further, stator skeleton and iron core are through the integrated into one piece that moulds plastics, the terminal is through moulding plastics integrated into one piece on stator skeleton.

Compared with the prior art, the utility model has the following beneficial technical effects:

according to the utility model, the wire accommodating structure is arranged on the terminal, the wire accommodating structure can fasten the winding or the lead wire, and replaces manual processes of cutting, removing paint, twisting, welding and wire arrangement in the prior art, the technical scheme effectively avoids the problems of disordered wiring, easy loosening and insufficient welding, meanwhile, the wire accommodating structure can complete automatic winding and fastening by using machinery in the whole process, only one wire breaking treatment needs to be carried out on the head wire end and the tail wire end of the winding, the automation degree is high, and the production efficiency of products is improved.

The first wire accommodating part is used for fixing the winding, the first wire accommodating part comprises a protruding part which is arranged on the outer side of the terminal and extends, the protruding part comprises a vertical part and a bending part at the lower end of the vertical part, the winding is a single-strand wire, the wire diameter is small, the single-strand wire can be wound on the protruding part of the first wire accommodating part, flat clamping is easy, the contact area of the protruding part and the winding is increased, and clamping force is large.

And thirdly, a second wire accommodating part is arranged for fixing the lead and comprises a hollow cylinder, a second wire accommodating port is formed in the cylinder along the axial direction, the lead is a multi-strand wire, the diameter of the lead is relatively large, the lead is wrapped by an insulating skin, the hollow wall surface of the second wire accommodating port has a large contact area with the lead, and the clamping force is large.

And fourthly, the terminal and the stator framework are connected through the elastic device, the terminal and the stator framework are flexibly connected while the firmness of the winding and the lead wire is ensured, the loosening of a circuit caused by vibration and impact when the motor rotates under the condition of firm wiring is avoided, and the use safety of the product in a severe vibration scene is ensured.

Drawings

Fig. 1 is a schematic front view of a stator winding structure according to an embodiment of the present invention.

Fig. 2 is a schematic top view of a stator winding structure according to an embodiment of the present invention.

Fig. 3 is a schematic top view of a stator winding structure in a winding state according to an embodiment of the present invention.

Fig. 4 is an axial view of a stator winding structure in a winding state according to an embodiment of the present invention.

Fig. 5 is an enlarged schematic structural diagram of a stator winding structure at a according to an embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating a right-view structure of an elastic device in a stator winding structure according to a second embodiment of the present invention.

Fig. 7 is a schematic axial view of an elastic device in a stator winding structure according to a second embodiment of the present invention.

In the drawings, the reference numbers:

1. a stator frame; 101. winding; 2. an iron core; 301. a first terminal; 302. a second terminal; 4. winding; 5. a lead wire; 6. a line-containing structure; 601. a first line-holding portion; 6011. a boss portion; 60111. a vertical portion; 60112. a bending section; 6012. a first wire accommodating port; 6013. a bump; 602. a second line-holding portion; 6021. a cylinder; 6022. a second wire accommodating port; 700. a groove; 701. a boss; 702. chamfering; 703. an extension portion; 8. a spring plate; 801. a first end portion; 802. a second end portion; 803. a first hole; 804. a second hole; 9. a fastener.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.

In the description of the present invention, it is defined that the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In order to describe the above-mentioned stator winding structure more clearly, the present invention defines the terms "proximal end" and "distal end", specifically, "proximal end" refers to the end of the terminal close to the stator frame 1, and "distal end" refers to the end of the terminal far from the stator frame 1, taking fig. 1 as an example, the lower part of the terminal in fig. 1 is the proximal end, and the upper part of the terminal is the distal end.

Example one

Referring to fig. 3 and 4, a stator winding structure includes a stator frame 1, and an iron core 2 and a terminal that are disposed on the stator frame 1, where at least one group of windings 4 is wound on the stator frame 1, the terminal has a wire accommodating structure 6, the wire accommodating structure 6 is disposed at a proximal end and/or a distal end of the terminal, and the wire accommodating structure 6 is used to fix the windings 4 or fix a lead 5.

Preferably, in the stator winding structure according to the first embodiment of the present invention, the terminals include three first terminals 301 as the leading ends of the winding wires 4 and one second terminal 302 as the trailing ends of the winding wires 4, which are arranged at intervals on the top of the stator frame 1.

Of course, in other embodiments of the present invention, the number of the terminals may also be different from that of the first embodiment, as long as the terminals can be used as the first end of the winding 4 and as the tail end of the winding 4, and the present invention is not further limited.

Referring to fig. 1 to 4, fig. 6 and fig. 7, the following describes a specific structure of the line capacitance structure 6 as follows:

the wire accommodating structure 6 comprises a first wire accommodating part 601, the first wire accommodating part 601 comprises a protruding part 6011 extending along the outer sides of the first terminal 301 and the second terminal 302, and a first wire accommodating opening 6012 is formed between the protruding part 6011 and the first terminal 301 or between the protruding part 6011 and the second terminal 302.

Specifically, in the stator winding structure according to the first embodiment of the present invention, the protruding portion 6011 includes a vertical portion 60111 and a curved portion 60112 disposed at a proximal end of the vertical portion 60111, the curved portion 60112 is fixedly connected to the first terminal 301 or the second terminal 302, the first wire accommodating port 6012 is used to fix the winding wire 4, the winding wire 4 is a single-strand wire, and the wire diameter is relatively small, and the winding wire can be wound around the vertical portion 60111 and the curved portion 60112 of the first wire accommodating portion 601, so that flat clamping is easy, a contact area between the protruding portion 6011 and the winding wire 4 is increased, and a clamping force is large;

referring to fig. 6, further, a bump 6013 matched with the protruding portion 6011 is disposed outside each of the first terminal 301 and the second terminal 302, the bump 6013 is semicircular, and when the protruding portion 6011 is deformed by a force, the vertical portion 60111 contacts the bump 6013, so that the winding wire 4 is fixed in a gap between the bump 6013 and the curved portion 60112, and the winding wire 4 is prevented from being loosened.

Further, the wire containing structure 6 further comprises a second wire containing part 602, the second wire containing part 602 comprises a cylinder 6021, a second wire containing hole 6022 is formed in the cylinder 6021 along the axial direction, and the inner diameter of the second wire containing hole 6022 is larger than the diameter of the lead wire 5. Specifically, in the stator winding structure according to the first embodiment of the present invention, the column 6021 is a hollow column, the second wire accommodating port 6022 is formed in the column 6021 along the axial direction, the second wire accommodating port 6022 is a hollow portion of the column 6021, the lead 5 is a multi-strand wire, the wire diameter is relatively large and is wrapped by an insulating sheath, and the hollow wall surface of the second wire accommodating port 6022 has a large contact area with the lead 5, so that the clamping force is large.

Of course, in other embodiments of the present invention, the wire containing structure 6 may have other shapes, such as a square shape or a triangular shape, as long as it is sufficient to fasten the winding wire 4 or the lead 5.

Further, the first wire holding portion 601 and the second wire holding portion 602 are deformed by applying pressure and current by an electric resistance welding machine and are welded to the winding wire 4 or the lead 5. The pressure of the resistance welding machine is 200-500N, and the current is 0-10000A. In resistance welding, no filler metal is required, productivity is high, deformation of the first wire holding portion 601 and the second wire holding portion 602 is small, and automation is easily achieved.

Further, referring to fig. 5, the distal end of the stator frame 1 is provided with at least two slots 700, and the slot width of the slots 700 is larger than the outer diameter of the winding 4, so as to prevent the winding 4 from being clamped. Specifically, an extension 703 extends axially from a distal end of the stator frame 1, the extension 703 is provided with a boss 701 along a radial direction, a width of the boss 701 is the same as a groove depth of the groove 700, a length of the boss 701 is the same as a length of the groove 700, the groove 700 is formed by two adjacent bosses 701 at an interval, and the bosses 701 play a role in isolating the winding wire 4.

Preferably, in the stator winding structure according to the first embodiment of the present invention, two slots 700 are formed at the far end of the stator frame 1 where the winding groups 101 are disposed, and three slots 700 are formed at the far end of the stator frame 1 where the winding groups 101 are spaced.

Further, the extension 703 and the boss 701 are respectively provided with a chamfer 702, preferably, in the stator winding structure according to the first embodiment of the present invention, the chamfers 702 are provided at the edges of the extension 703 and the boss 701, and the winding 4 passes through the chamfers 702 when the edges of the extension 703 and the boss 701 are bent upward, leftward, downward, and rightward, so as to avoid a large loss of the winding 4 due to bending of the enamel skin.

Further, the groove 700 is lower than the terminal, so that wiring is facilitated, and the bent part of the winding 4 is reduced.

Further, stator skeleton 1 and iron core 2 are through moulding plastics integrated into one piece, the terminal is through moulding plastics integrated into one piece on stator skeleton 1.

The following describes a specific working process of the first embodiment of the present invention as follows:

in the working process of the present invention, referring to fig. 1 to 4, three first terminals 301 are used as the head end of the winding 4, and the second terminals 302 are used as the tail end of the winding 4, the winding machine is used to wind the U-phase, V-phase and W-phase windings 4 on the first wire-holding portion 601 (such as U0, V0 and W0 of three-phase wires in fig. 4) at the lower end of the first terminals 301, the U-phase winding 4 is routed along the lowermost end slot 700, the V-phase winding 4 is routed along the middle slot 700, the W-phase winding 4 is routed along the uppermost slot 700, the winding method of U-phase, V-phase and W-phase in the stator frame 1 refers to the stator three-phase winding method in the prior art, in the first embodiment of the present invention, a star-shaped winding manner is adopted, wherein the V-phase winding 4 is wound in the opposite direction to the U-phase and W-phase windings 4, and the U-phase, V-phase and W-phase windings 4 are wound in sequence, and then enter the second terminals 302 and wound on the first wire-holding portion 601 at the lower end of the three-phase wires (such as U1 of three-phase wires in fig. 4, V1, W1), performing disconnection processing on the head line end and the tail line end; and a lead 5 is connected to a second wire containing part 602 at the upper end of the first terminal 301, and all the first wire containing part 601 and the second wire containing part 602 are pressed and applied with current by an electric resistance welding machine under the conditions that the pressure is 200-500N and the current is 0-10000A, so that the first wire containing part 601 and the second wire containing part 602 are deformed and fixedly welded with the winding 4 or the lead 5.

Example two

The second embodiment is the same as the first embodiment in most of the structures, except that the first terminal 301, the second terminal 302 and the stator frame 1 may be flexibly connected by an elastic device.

Referring to fig. 6 and 7, the following describes a specific structure of the elastic device as follows:

the elastic device comprises a spring plate 8, two ends of the spring plate 8 are fixed through fasteners 9, and the distance between the near end and the far end of the spring plate 8 is adjustable through the fasteners 9.

Specifically, in the second embodiment of the present invention, the spring plate 8 has a first end portion 801 and a second end portion 802, the first end portion 801 is fixedly connected to the stator frame 1, the first end portion 801 is provided with a first hole 803, a thread is provided in the first hole 803, the second end portion 802 is fixedly connected to the first terminal 301 or the second terminal 302, the second end portion 802 is provided with a second hole 804, the fastening member 9 is screwed to the first hole 803 through the second hole 804, and the distance between the first end portion 801 and the second end portion 802 is adjusted by tightening or loosening the fastening member 9, so that the first terminal 301 and the second terminal 302 are flexibly connected to the stator frame 1, and therefore, loosening of the wire due to vibration and impact when the motor rotates even if the wire is firmly connected is avoided, and safety of the product that can be used in a severe vibration scene is ensured.

Of course, in other embodiments of the present invention, the elastic device may also adopt other flexible connection structures, such as a slider, an elastic pin, etc., as long as it is sufficient to flexibly connect the first terminal 301 and the second terminal 302 with the stator frame 1 and achieve the effect of absorbing vibration; the fastening member 9 may be a screw, a bolt, a buckle, etc., as long as the distance between the first end 801 and the second end 802 of the fixing spring strip 8 can be adjusted.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. Stator wire winding structure, including stator skeleton and iron core, the terminal of setting on stator skeleton, the last at least a set of wire winding of stator skeleton, its characterized in that: the terminal is provided with a wire accommodating structure, the wire accommodating structure is arranged at the near end and/or the far end of the terminal, and the wire accommodating structure is used for fixing the winding wire or fixing a lead.

2. The stator winding structure according to claim 1, wherein: the wire accommodating structure comprises a first wire accommodating part, the first wire accommodating part comprises a protruding part extending along the outer side of the terminal, and a first wire accommodating opening is formed between the protruding part and the terminal.

3. The stator winding structure according to claim 2, wherein: the outer side of the terminal is provided with a lug matched with the bulge.

4. The stator winding structure according to claim 1, wherein: the line containing structure comprises a second line containing part, the second line containing part comprises a cylinder, and a second line containing opening is formed in the cylinder.

5. The stator winding structure according to claim 1, wherein: the far end of the stator framework is provided with at least two grooves, and the groove width of each groove is larger than the outer diameter of a winding.

6. The stator winding structure according to claim 5, wherein: the slot is disposed below the terminal.

7. The stator winding structure according to claim 5, wherein: the stator skeleton distal end is equipped with the extension, the extension is equipped with a plurality of bosss, and is adjacent form between the boss the groove, the width of boss with the groove depth in groove is the same, and the length of boss is the same with the length in groove, the boss is used for keeping apart the wire winding.

8. The stator winding structure according to claim 7, wherein: chamfers are respectively arranged on the extension part and the lug boss.

9. The stator winding structure according to claim 1, wherein: and the terminal is flexibly connected with the stator framework through an elastic device.

10. The stator winding structure according to claim 9, wherein: the elastic device comprises a spring piece, the near end and the far end of the spring piece are fixed through the same fastener, and the distance between the near end and the far end of the spring piece is adjustable through the fastener.

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