CN210167877U

CN210167877U - Welded motor winding end connection structure

Info

Publication number: CN210167877U
Application number: CN201921276298.3U
Authority: CN
Inventors: 林中尉
Original assignee: Nanjing Haolong Electronics Co Ltd
Current assignee: Nanjing Fuli Heavy Industry Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-03-20
Anticipated expiration: 2029-08-07

Abstract

This patent provides a can effectively reduce winding and wire at iron core axial direction's length, and winding length shortens, reduces motor winding's resistance, improves motor efficiency's welded motor winding end connection structure. According to the welding type motor winding end part connecting structure, after two wires extending out of two wire grooves of an iron core are bent in opposite directions, the two wires are welded at the intersection or the two wires are welded with two sections perpendicular to the wire grooves of the iron core.

Description

Welded motor winding end connection structure

Technical Field

This patent relates to motor winding tip connection structure.

Background

With the development of power motors, it is a trend to use flat section wires for power motors, and the ends of the flat section wires penetrating through the iron core wire slots are welded to each other. In order to realize welding and twisting, referring to fig. 1, after the wire 1 extending from the iron core wire slot is bent in the circumferential direction of the iron core, the end part of the wire 1 is also provided with a wire section 10 parallel to the iron core wire slot, which is used as a clamping section of twisting and a combination section for welding with other wires. According to the structure, the end parts of the two wires penetrating through the wire grooves, which are welded, are required to be provided with the wire sections parallel to the iron core wire grooves, and the two wires are welded through the two wire sections which are parallel and opposite to each other, so that although the process requirements can be met, the length of the wires and the space occupied by the motor stator are additionally increased in the axial direction of the iron core (namely the direction parallel to the iron core wire grooves). Therefore, the invention discloses a welding winding which does not increase the length of a lead in the axial direction of an iron core shaft and has a short end connecting part, and the welding winding is the development direction of the flat wire motor technology.

Disclosure of Invention

The purpose of this patent is to provide a can effectively reduce winding and wire at the length of iron core axial direction, and winding length shortens, reduces motor winding's resistance, improves motor efficiency's welded motor winding tip connection structure.

This patent welded type motor winding tip connection structure, two wires that extend out from two wire casings of iron core buckle the back in opposite directions, two wires weld mutually or two wires and two sections of iron core wire casing vertically weld mutually in crossing department.

The beneficial effect of this patent: for wire tip must have one section wire section structure parallel with the iron core wire casing among the prior art, the wire in this patent is buckled in iron core terminal surface in opposite directions, and two wire tip of looks welded are not parallel with the iron core wire casing, but with iron core wire casing slope or vertically. That is to say, the wire in the technology does not have the wire section 10 parallel to the iron core wire slot in the prior art, so the wire only needs a short length in the axial direction of the iron core, and the length of the winding end part in the axial direction of the iron core is also shortened, the size of the motor is further reduced, the resistance of the motor winding is reduced, and the efficiency of the motor is improved.

In the welding type motor winding end part connecting structure, the end parts of the two wires are welded on the opposite binding surfaces of the iron core in the radial direction.

In the above-described welded motor winding end connecting structure, the end periphery of one lead is welded to the end periphery of another lead entirely or partially, for example, the end face or a part of the end face of one lead is welded to the end side face of another lead, and so on.

In the welding type motor winding end part connecting structure, the end part of one wire is bent in the radial direction and then welded with the end part of the other wire. Thus, an insulating space is formed between the two wires.

According to the welding type motor winding end part connecting structure, the end parts of the two wires are bent simultaneously in the radial direction and then welded. Thus, an insulating space is formed between the two wires.

The shape of the wire ends does not affect the scope of the claims of this patent;

the welding process between the two leads, various pretreatment processes and the like do not influence the scope of the claims of the patent;

the structure of the core-extending portions of the two wires does not affect the scope of the claims of this patent.

Drawings

FIG. 1 is an expanded schematic view of a prior art welded motor winding end connection;

FIG. 2 is an expanded schematic view of the welded motor winding end connection of the present patent;

FIG. 3 is a schematic view of a two wire welding configuration through a core slot;

fig. 4 is a view along direction a of fig. 3 (the end portions of two wires are not bent in the radial direction of the core, and the two wires are welded to the radially opposite contact surfaces of the core);

FIG. 5 is a schematic view of a two wire weld configuration through a core slot;

fig. 6 is a view taken along direction a of fig. 5 (a schematic structural view in which an end of one wire is bent in a radial direction of the core and two wires are welded to each other at radially opposite contact surfaces of the core);

FIG. 7 is a schematic view of a two wire weld configuration through a core slot;

fig. 8 is a view taken along direction a of fig. 7 (the end portions of the two wires are not bent in the radial direction of the core, and the end face of one wire is welded to the end side face of the other wire);

FIG. 9 is a schematic view of a two wire weld configuration through a core slot;

fig. 10 is a view taken along direction a of fig. 9 (a schematic view of a structure in which an end portion of one of the wires is bent in a radial direction of the core and an end face of the one of the wires is welded to an end side face of the other of the wires);

FIG. 11 is a schematic view of a two wire weld configuration through a core slot;

fig. 12 is a view taken along direction a of fig. 11 (the end portions of the two wires are not bent in the radial direction of the core, and a portion of the end face and the end side face of one wire is welded to a portion of the end face and the end side face of the other wire);

FIG. 13 is a schematic view of a two wire weld configuration through a core slot;

fig. 14 is a view taken along direction a of fig. 13 (a schematic structural view in which end portions of two wires are bent in a radial direction of a core, and an end face of one wire is welded to an end side face of the other wire);

fig. 15 is a schematic view of a welding structure of two wires passing through a slot of an iron core (the two wires are bent in opposite directions twice in the circumferential direction of the iron core);

fig. 16 is a plan view of fig. 15 (a schematic view of a structure in which one end of one wire is bent in the radial direction of the core, and welded to the radially opposite contact surfaces of the core, and the two welded ends of the wire are parallel to each other);

fig. 17 is a schematic view of a welding structure of two wires passing through a slot of an iron core (the two wires are bent in the circumferential direction of the iron core for multiple times in opposite directions);

fig. 18 is a plan view of fig. 17 (a schematic view showing a structure in which one end of one wire is bent in the radial direction of the core, and welded to the radially opposite contact surfaces of the core, and the welded ends of the two wires are parallel to each other).

Detailed Description

Example two wires are welded at the intersection

Referring to the connection structure of the end of the welded motor winding shown in fig. 2, after two

wires

1 and 2 extending from two iron core slots are bent once in the circumferential direction of the iron core, the intersecting ends of the two wires are welded. When welding, the end periphery of one wire is welded with the end periphery of the other wire.

Referring to fig. 3-6, the end 11 of the conductor 1 is welded to the end 21 of the conductor 2 at the radially opposite abutment surfaces of the core.

Referring to fig. 7 to 10, the end face of the end 11 of the wire 1 is soldered to the side face of the end 21 of the wire 2, and at the same time, the end face of the end 21 of the wire 2 is soldered to the side face of the end 11 of the wire 1.

Referring to fig. 6 and 10, in order to form the insulation space 3 between the two wires, the end 21 of the wire 2 is bent in the radial direction and then welded to the end 11 of the wire 1 (fig. 6), or the end of the wire 1 is bent in the radial direction and then welded to the end of the wire 2 (fig. 10).

Referring to fig. 11 and 12, a part of the end surface and the side surface of the end 11 of the lead 1 and a part of the end surface and the side surface of the end 21 of the lead 2 are welded to each other.

Referring to fig. 13 and 14, the end face of the end 11 of the wire 1 and the side face of the end 21 of the wire 2 are welded, and the ends of the two wires which are bent simultaneously in the radial direction and then intersect are welded to form the insulation space 3.

When the part of the wire extending out of the iron core is twisted, the wire is shifted on the circumferential side surface of the iron core through a twisting tool, the wire is bent to the required inclination, the end parts of two wires to be connected are overlapped together to form a state shown in figures 3-6, and the end parts of the two wires are welded together through resistance welding, ultrasonic welding or any other welding process capable of enabling metal connection to be formed between two binding surfaces of the wires. It is of course also possible to use electric or laser welding or any other welding process that is capable of welding the seam of two metal parts together, see fig. 7-14, to weld together the wire near the edge, which may be one weld or more than one weld.

Moreover, for fig. 3 to 14, when twisting the wire extending out of the slot of the core so that the wire is bent in the circumferential direction of the core, only the twisting tool needs to apply an external force to the side surface of the wire in the circumferential direction of the core. Therefore, when the wire is twisted, because only one part of the welded wire shown in the figures 3-14 is bent (except for bending of the inclined part of the wire), the twisting head forming resistance is only half of the conventional resistance, and the force applied by the twisting head tool is only half of the conventional force, so that the forming is easier and the quality is ensured.

In the embodiment, two sections of two wires perpendicular to the iron core wire grooves are welded

Referring to the connection structure of the winding end of the welded motor shown in fig. 15-18, after two

wires

1 and 2 extending from two iron core slots are bent twice or more in the circumferential direction of the iron core, they are welded to the

wire ends

11 and 12 perpendicular to the iron core slots. The two wire ends 11, 12 are parallel to each other in a plane parallel to the end faces of the core. In the welding, referring to fig. 16 and 18, the end 11 of the lead wire 1 and the end 21 of the lead wire 2 are welded to each other at the abutting surface of the core in the radial direction, and the end 21 of the lead wire 2 is bent in the radial direction and then welded to the end 11 of the lead wire 1. The ends of the two wires are welded together by resistance welding or ultrasonic welding or any other welding process that enables a metallic connection to be formed between the two abutting surfaces of the wires.

Like this, for prior art, the wire in this patent need not leave extra centre gripping part, also need not solitary and the parallel welding part of iron core wire casing, and this structure makes motor winding tip size shorten, and wire length shortens, has both reduced motor winding's resistance, improves motor efficiency, has reduced motor winding's length simultaneously again, has fine realistic meaning and advance.

Claims

1. The utility model provides a welded type motor winding tip connection structure which characterized by: after two wires extending out of the two wire slots of the iron core are bent in opposite directions, the two wires are welded at the intersection or the two wires are welded with two sections perpendicular to the wire slots of the iron core.

2. The welded type motor winding end portion connecting structure according to claim 1, wherein: the ends of the two wires are welded on the binding surfaces of the iron core which are opposite in the radial direction.

3. The welded type motor winding end portion connecting structure according to claim 1, wherein: the end periphery of one conducting wire is welded with the end periphery of the other conducting wire in whole or part.

4. The welded type motor winding end portion connecting structure according to claim 1, wherein: the end of one wire is bent in the radial direction and then welded with the end of the other wire.

5. The welded type motor winding end portion connecting structure according to claim 1, wherein: the ends of the two wires are bent simultaneously in the radial direction and then welded.