CN213243673U

CN213243673U - EPS motor PCB board winding connection structure

Info

Publication number: CN213243673U
Application number: CN202022343186.4U
Authority: CN
Inventors: 徐松; 朱利伟; 金良宽; 谭磊鑫
Original assignee: Guizhou Aerospace Linquan Motor Co Ltd
Current assignee: Guizhou Aerospace Linquan Motor Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-05-18
Anticipated expiration: 2030-10-20

Abstract

The utility model provides an EPS motor PCB winding connection structure, which comprises a motor stator armature and a printed board arranged on the motor stator armature; the upper end face of the printed board is coated with a metal conductive coating, and the upper end face of the printed board is provided with a wire outlet hole. The utility model discloses a PCB board printed circuit board replaces the support and the copper bar of current scheme, has reduced material cost and processing cost, has reduced the shared space of motor tip simultaneously and has reduced its volume, is favorable to mass production.

Description

EPS motor PCB board winding connection structure

Technical Field

The utility model relates to a EPS motor PCB board winding connection structure belongs to motor winding connection structure's technical field, is applicable to car EPS motor for power-assisted steering.

Background

With the development of the automobile industry, an automobile steering system is converted from hydraulic driving to electric power assistance, and the core component of the electric power steering system is an EPS motor.

In order to improve the mass production efficiency of the existing EPS motor, a motor stator armature winding adopts a machine winding mode, the machine winding improves the armature winding efficiency, and meanwhile, the number of outgoing lines of an armature end winding is increased, so that the outgoing line heads of the armature end part need to be connected.

The current commonly used mode is that at winding tip installing support and copper bar, he couples together motor winding lead-out wire through the copper bar, as shown in fig. 1-4, motor winding lead-out wire is connected by the copper bar, and copper bar 12 is fixed in support 13 recess, and copper bar 12 and motor winding lead-out wire crimping soldering after the crimping, when copper bar 12 crimping motor winding lead-out wire promptly, is equipped with a crimping structure 11.

As described above, the winding is connected by the bracket and the copper bar, which has the advantages of convenience for automatic production and improvement of assembly efficiency, but the processing procedure is complex, the time consumption is long, the processing cost and the material cost are high, and the winding connection mode has the defect of low production efficiency in batch production; secondly, when the scheme of the support and the copper bar is adopted to connect the end parts of the windings, the winding lead-out wires need to pass through the round holes on the support, then the copper bar embedded in the support is bent to clamp the winding lead-out wires, the joint of each winding lead-out wire and the copper bar needs to be crimped firstly, so that the copper bar is firmly contacted with the winding lead-out wires, and then the contact parts are soldered or resistance welded, thereby increasing the manufacturing working hours and the manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a EPS motor PCB board winding connection structure, this EPS motor PCB board winding connection structure has promoted assembly efficiency, has reduced manufacturing cost and material cost.

The utility model discloses a following technical scheme can realize.

The utility model provides a EPS motor PCB board winding connection structure, which comprises a motor stator armature and a printed board arranged on the motor stator armature; the upper end face of the printed board is coated with copper and a metal conductive coating in sequence, and a wire outlet hole is formed in the upper end face of the printed board.

The wire outlet holes are distributed uniformly.

The motor stator armature comprises a stator core, and an insulating groove and a winding outgoing line are sequentially arranged on the upper end face of the stator core; the printed board is connected with the insulation groove.

The printed board is annular in shape.

And additionally coating a metal conductive coating on the basis of the original copper-clad printed board.

The thickness of the metal conductive coating is more than 0.3 mm.

The winding outgoing line penetrates through the wire outlet hole to be exposed, and tin soldering is carried out on the contact part of the winding outgoing line and the wire outlet hole.

The beneficial effects of the utility model reside in that: the PCB is adopted to replace the support and the copper bar in the prior art, so that the cost is lower, the material cost and the processing cost are reduced, meanwhile, the space occupied by the end part of the motor is reduced, the volume is reduced, and the mass production is facilitated.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

FIG. 2 is a schematic structural view of the crimping structure of FIG. 1;

FIG. 3 is a schematic view of the structure of the copper bar in FIG. 1;

FIG. 4 is a schematic structural view of the stent of FIG. 1;

fig. 5 is a schematic structural diagram of the present invention;

FIG. 6 is a schematic diagram of the stator armature of the motor of FIG. 5;

fig. 7 is a schematic structural view of the printed board of fig. 5;

in the figure: 11-crimping structure, 12-copper bar, 13-bracket, 1-printed board, 2-motor stator armature, 31-winding outgoing line, 32-insulating groove, 33-stator iron core, 41-wire outlet hole and 42-metal conductive coating.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

As shown in fig. 5 to 7, an EPS motor PCB winding connection structure includes a motor stator armature 2 and a printed board 1 disposed on the motor stator armature 2; the upper end face of the printed board 1 is coated with copper and a metal conductive coating 42 in sequence, and a wire outlet hole 41 is formed in the upper end face of the printed board 1.

The outlet holes 41 are provided with a plurality of outlet holes 41 which are uniformly distributed.

Preferably, the number of the outlet holes 41 is the same as the number of the winding outlet wires 31 on the motor stator armature 2.

The motor stator armature 2 comprises a stator core 33, and an insulation groove 32 and a winding lead-out wire 31 are sequentially arranged on the upper end face of the stator core 33; the printed board 1 is connected to the insulation groove 32.

The printed board 1 is annular in shape.

On the basis of original copper-clad of the printed board 1, the metal conductive coating 42 is additionally coated, so that the capability of the printed board 1 for passing large current is improved, namely the defect that the printed board 1 is difficult to pass large current is overcome.

Preferably, the thickness of the metal conductive coating 42 can be flexibly adjusted according to the magnitude of the current flowing through the winding lead-out wire.

The thickness of the metallic conductive coating 42 is greater than 0.3 mm.

The winding lead wire 31 is exposed through the wire outlet hole 41, and the contact part of the winding lead wire 31 and the wire outlet hole 41 is soldered, so that the contact resistance is reduced.

Further, the utility model discloses a PCB board printed circuit board replaces the support 13 and the copper bar 12 of current scheme, and its cost is lower has reduced material cost and processing cost, has reduced the shared space of motor tip simultaneously and has reduced its volume, is favorable to mass production.

Claims

1. The utility model provides a EPS motor PCB board winding connection structure, includes motor stator armature (2) and printed board (1) of setting on motor stator armature (2), its characterized in that: the upper end face of the printed board (1) is sequentially coated with a copper-clad and metal conductive coating (42), and a wire outlet hole (41) is formed in the upper end face of the printed board (1).

2. The EPS motor PCB board winding connection structure of claim 1, wherein: the number of the wire outlet holes (41) is multiple, and the wire outlet holes (41) are uniformly distributed.

3. The EPS motor PCB board winding connection structure of claim 1, wherein: the motor stator armature (2) comprises a stator core (33), and an insulation groove (32) and a winding lead-out wire (31) are sequentially arranged on the upper end face of the stator core (33).

4. The EPS motor PCB board winding connection structure of claim 1, wherein: the printed board (1) is annular.

5. The EPS motor PCB board winding connection structure of claim 1, wherein: and additionally coating a metal conductive coating (42) on the basis of the original copper-clad printed board (1).

6. The EPS motor PCB board winding connection structure of claim 1, wherein: the thickness of the metal conductive coating (42) is more than 0.3 mm.

7. The EPS motor PCB board winding connection structure of claim 3, wherein: the winding lead wire (31) is exposed through the lead-out hole (41), and the contact part of the winding lead wire (31) and the lead-out hole (41) is soldered.

8. The EPS motor PCB board winding connection structure of claim 3, wherein: the insulation groove (32) is connected with the printed board (1).