CN201146440Y

CN201146440Y - Electromagnetic compatibility permanent magnetic DC motor

Info

Publication number: CN201146440Y
Application number: CNU2008200004159U
Authority: CN
Inventors: 刘汉忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-04
Filing date: 2008-01-04
Publication date: 2008-11-05
Anticipated expiration: 2018-01-04

Abstract

The utility model relates to a motor, in particular to a permanent magnet dc motor, which comprises a stator shell, a rotator in the stator shell, an end cover, an electric brush and a terminal; wherein, the end cover is internally embedded with capacitances and inductances; the capacitances and the inductances are arranged in pairs corresponding to the terminal; the terminal is connected with one ends of the capacitances and the inductances; the other ends of the inductances are connected with the electric brush and the other ends of the capacitance are connected with the motor casing; the end cover is internally provided with grooves in sections which are used for clipping; the side of the end cover is provided with an indentation; both ends of the inductances are arranged in two grooves and the tail ends of the electric brush and a tip are respectively clipped at the two grooves; the capacitances are arranged on the side wall of the end cover, wherein, one ends of the capacitance are clipped in the groove at the tail end of the end cover and the other ends bend and extend to the side indentation of the end cover. By means of simple and effective motor structure, the motor allows the interior of the end cover of the motor to additionally contain two pairs of capacitances and inductances except the electric brush; moreover, the motor has simple installation in structure, which realizes the welding-free installation of elements and effectively improves the electromagnetic compatibility of the whole motor.

Description

The electromagnetic compatibility permanent magnet direct current motor

[technical field]

The utility model relates to a kind of motor, refers in particular to a kind of permanent magnet direct current motor that has better Electro Magnetic Compatibility.

[background technology]

Known under many application scenarios of DC motor, all have the requirement that to satisfy EMC (electromagnetic compatibility), and traditional way is often by connecing some electric capacity, inductance again or improving the Electro Magnetic Compatibility of DC motor by the pcb board that is equipped with a capacitor inductance on motor earthing power supply terminal.Yet this way is owing to need influence the assembling capacity of motor integral body and the reliability in the use to a great extent in addition for motor is equipped with corresponding device.

[summary of the invention]

The purpose of this utility model is to have overcome above-mentioned defective, provide a kind of in its end cap, can place under the permanent magnet direct current motor end cover structure of two pairs of capacitor and inductors.

The purpose of this utility model is achieved in that a kind of electromagnetic compatibility permanent magnet direct current motor, it comprises stator case, rotor, end cap, brush and terminal in it, its improvements are: end cap is embedded with electric capacity and inductance, the capacitor and inductor corresponding terminal is provided with in pairs, terminal links to each other with inductance, electric capacity one end, the inductance other end links to each other with brush, and the electric capacity other end links to each other with motor housing;

Segmentation is provided with the groove that is used for clip in the described end cap, and the end cap side is provided with depression; The inductance two ends place in two grooves, and brush tail end and termination tail end be clip on it respectively; Electric capacity is as on the end cap sidewall, and one end clip is in the tail end groove of termination, and other end bending extension is to the end cap side-facing depressions;

Described brush tail end becomes L shaped, also is provided with the ridge structure that is used to contact inductance on its L shaped tail end arm;

Tail end both sides, described termination are provided with the flanging structure that is used to press the folder capacitor and inductor.

Than common permanent magnet direct current motor, the beneficial effects of the utility model are to provide a kind of simple and effective electric machine structure, make and except that brush, can additionally hold two pairs of capacitor and inductors in the End cover for motor, and simple installation on the structure, realize the welded and installed of exempting from of element, effectively raised the Electro Magnetic Compatibility of motor integral body.

[description of drawings]

Below in conjunction with drawings and Examples the utility model is described further.

Fig. 1 is the structural representation of the utility model End cover for motor.

[embodiment]

Referring to figure one is the end cover structure of the utility model motor, the one circle segmentation of end cap edge is provided with 4 grooves, brush 1 and termination 4 are provided with in pairs respectively and are embedded in wherein, and 4 tail end both sides, termination are provided with the flanging structure, and it is pressed with an end of inductance 2 and electric capacity 3 down respectively, the other end of inductance 2 is pressed under brush 1 tail end, 1 one-tenth tail end of described brush becomes L shaped, and the arm of L shaped tail end is provided with protuberance, by this protuberance, can further increase the contact area of brush 1 and inductance 2 terminations, avoid loose contact; Be provided with depression in the End cover for motor side, on electric capacity 3 installations and the end cap inwall, its other end bending extension is to the end cap side-facing depressions, and this structure has guaranteed that the other end of electric capacity 3 after end cap is installed directly communicates with motor housing.

Herein by the built-in cavity of end cap, two pairs of electric capacity, inductance have been held to descend, regulated the Electro Magnetic Compatibility of motor integral body, and owing to adopted the syndeton of clip respective outer side edges brush tail, termination tail, thereby finished the solderless downlink connection that realizes between the device, effectively improved product efficiency of assembling in process of production.

Claims

1. electromagnetic compatibility permanent magnet direct current motor, it comprises stator case, rotor, end cap, brush and terminal in it, it is characterized in that: end cap is embedded with electric capacity and inductance, the capacitor and inductor corresponding terminal is provided with in pairs, terminal links to each other with inductance, electric capacity one end, the inductance other end links to each other with brush, and the electric capacity other end links to each other with motor housing.

2. electromagnetic compatibility permanent magnet direct current motor as claimed in claim 1 is characterized in that: segmentation is provided with the groove that is used for clip in the described end cap, and the end cap side is provided with depression; The inductance two ends place in two grooves, and brush tail end and termination tail end be clip on it respectively; Electric capacity is as on the end cap sidewall, and one end clip is in end cap tail end groove, and other end bending extension is to the end cap side-facing depressions.

3. electromagnetic compatibility permanent magnet direct current motor as claimed in claim 2 is characterized in that: described brush tail end becomes L shaped, also is provided with the ridge structure that is used to contact inductance on its L shaped tail end arm.

4. electromagnetic compatibility permanent magnet direct current motor as claimed in claim 2 is characterized in that: tail end both sides, described termination are provided with the flanging structure that is used to press the folder capacitor and inductor.