CN213402620U - Direct current torque motor structure with PE line - Google Patents

Abstract

The utility model discloses a direct current torque motor structure with PE wire, which comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a stator core and a stator coil, the stator coil is pressed in a wire slot of the stator core, and the direct current torque motor structure also comprises the PE wire for grounding the stator core; a wire pressing groove is formed in the inner wall of a wire groove of the stator core along the axial direction, and a metal part of the PE wire is embedded in the wire pressing groove and is in contact with the stator core; the metal part of the PE wire is insulated with the stator coil by insulating paper, and is pressed and fixed in the wire pressing groove by the stator coil; the free end of the PE wire with the insulating sheath is led out from the stator core. Direct current torque motor structure with PE line in, directly draw forth the PE line from stator core, very big simplification the mode of motor electromagnetic compatibility ground connection, practiced thrift PE line ground connection installation cost, installation PE line that can be more convenient.

Description

Direct current torque motor structure with PE line

Technical Field

The utility model relates to a direct current torque motor structure especially relates to a direct current torque motor structure with PE line.

Background

With the increase of electronic devices, electromagnetic interference and electromagnetic compatibility are higher and higher, when the motor is driven in the SPWM mode, because chopping interference of electronic devices radiates outwards through the motor, the interference seriously affects the work of external electronic devices, and has a great influence on the electrical performance of the motor, such as output power, torque, rotating speed and the like, so that the requirements on safe use and compatibility of the motor are higher and higher.

The motor grounding technology is taken as a means of the electromagnetic compatibility standard of the motor, and the motor with the shell can be grounded on the shell and is connected with a power supply shielding net; however, the shell-less motor or the frameless motor has no way to be grounded in a shielding manner (i.e. PE wires) before the motor leaves the factory.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's drawback provides a direct current torque motor structure with PE line.

The utility model discloses a DC torque motor structure with PE line, including stator module and rotor subassembly, the stator module includes stator core and stator coil, the stator coil is pressed in the wire casing of stator core, still include the PE line that is used for with stator core ground connection;

a wire pressing groove is formed in the inner wall of a wire groove of the stator core along the axial direction, and a metal part of the PE wire is embedded in the wire pressing groove and is in contact with the stator core;

the metal part of the PE wire is insulated with the stator coil by insulating paper, and is pressed and fixed in the wire pressing groove by the stator coil;

the free end of the PE wire with the insulating sheath is led out from the stator core.

DC torque motor structure with PE line in, the free end of PE line with stator coil's lead wire is tapped off to bind and is drawn forth.

Direct current torque motor structure with PE line in, directly draw forth the PE line from stator core, very big simplification the mode of motor electromagnetic compatibility ground connection, practiced thrift PE line ground connection installation cost, installation PE line that can be easier, faster, more convenient.

Drawings

Fig. 1 is a schematic view of a stator core in a dc torque motor structure with PE wires according to the present invention;

fig. 2 is the drawing-out schematic diagram of the PE wire in the dc torque motor mechanism with the PE wire of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1 and fig. 2, the dc torque motor structure with PE wire according to the present invention includes a stator assembly 91 and a rotor assembly 92, wherein the stator assembly includes a stator core 1 and a stator coil 2, the stator coil 2 is pressed in a wire slot 11 of the stator core 1, and the dc torque motor structure further includes a PE wire 4 for grounding the stator core 1. The inner wall of a wire slot 11 of the stator core 1 is axially provided with a wire pressing slot 3, and a metal part (namely, an exposed wire after an insulating sheath is stripped) of the PE wire 4 is embedded in the wire pressing slot 3 and is in contact with the stator core 1. The metal part of the PE wire 4 is insulated from the stator coil 2 by insulating paper 21, and is pressed and fixed in the wire pressing groove 3 by the stator coil 2; the free end of the PE wire 4 with the insulating sheath is led out from the stator core 1. In a specific lead-out operation, the free end of the PE wire 4 and the lead out 41 of the stator coil 2 may be bound and led out.

Direct current torque motor structure with PE line in, directly draw forth the PE line from stator core to together connect out with three lines of motor, saved the step of the preparation PE line of punching of installation on the stator, also avoided the condition of the unable installation PE line of punching on the small electric motor, very big simplification the mode of motor electromagnetic compatibility ground connection, practiced thrift PE line ground connection installation cost, can be easier, faster, more convenient installation PE line.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims (2)

1. A direct current torque motor structure with PE wires comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a stator core and a stator coil, and the stator coil is pressed in a wire slot of the stator core;

a wire pressing groove is formed in the inner wall of a wire groove of the stator core along the axial direction, and a metal part of the PE wire is embedded in the wire pressing groove and is in contact with the stator core;

the metal part of the PE wire is insulated with the stator coil by insulating paper, and is pressed and fixed in the wire pressing groove by the stator coil;

the free end of the PE wire with the insulating sheath is led out from the stator core.

2. The direct-current torque motor structure with the PE wire according to claim 1, wherein a free end of the PE wire is bound and led out with a lead-out end of the stator coil.

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