CN87204284U

CN87204284U - Automatic commutating micro dc motor

Info

Publication number: CN87204284U
Application number: CN 87204284
Authority: CN
Inventors: 石楚平
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-05-29
Filing date: 1987-05-29
Publication date: 1988-08-03

Abstract

The utility model relates to an automatic communicating micro DC motor. The utility model belongs to an electric motor product and comprises a casing, a rotatable stator, a rotor, a left barrier slice, a left brush, a communicating slice, a right brush, a right barrier slice, a front bearing and a rear bearing. The utility model has the advantages of simple structure, easy fabrication, low cost, low energy consumption and simple and reliable control manner, in the operation the power supply is switched off once and then switched on, the electric motor can realize the reversing rotation, and the use of a simple switch circuit can realize positive rotation, reversing rotation and stop three functions.

Description

Automatic commutating micro DC motor

The utility model belongs to a kind of motor product.

Usually the confidential change direction of rotation of direct current all is the error-polarity connection of power supply with motor.In manually controlling, must could realize with the switch of a dpdt double-pole double-throw (DPDT).In automatically control and remote control circuit, often by means of relay or adopt duplicate supply and plural electronic switching element to realize this function.Adopt this conventional motor to realize rotating, make the control circuit complexity.The entire product energy consumption is bigger, and cost is higher, and is prone to the Control Failure phenomenon.

The purpose of this utility model provides a kind of automatic reverse DC micromotor that can realize rotating.

Description of drawings: Fig. 1 the utility model longitudinal sectional view

The axial cutaway view of Fig. 2 the utility model

With reference to the accompanying drawings structure of the present utility model and principle are described in detail below:

Automatic reverse DC micromotor of the present utility model is as long as a regular tap just can be realized just changeing, reversing and stop three kinds of functions.Work characteristics is: energized, motor begin rotation; After the outage, motor shuts down; Energized once more, the motor counter-rotating.Whole motor by shell (1), can revolve stator (2), rotor (3), left catch (4), left brush (5), commutator segment (6), right brush (7), right catch (8), fore bearing (9), rear bearing (10) and form.Can revolve stator (2) is made up of stator case (11) and magnet (12) again.Can revolve on the stator case (11) of stator (2) fore bearing (9) and rear bearing (10) are housed.Front and back bearings places on the axle of rotor (3).By means of front and back bearings (9) and (10), whole stator (2) the 180 ° of angles of can pivoting of revolving.Left side catch (4) and right catch (8) are contained in respectively on the and arranged on left and right sides face of motor housing (1), so that can revolve stator (2) behind Rotate 180 ° angle, stop that it can not continue rotation.The structure of (seeing accompanying drawing 2) other each several part is identical with existing motor.

Its automatic reverse function of automatic reverse DC micromotor of the present utility model is achieved in that the S utmost point in the left side, and the N utmost point is on the right side; After energized, suppose that rotor (3) is by rotation counterclockwise, give driving torque of rotor according to motor, rotor is then given the principle of a countertorque of stator, can revolve stator (2) and be subjected to a clockwise torque, oriented right handed trend, but can not rotate owing to be subjected to stopping of right catch (8).One works as dump, and rotor (3) is because action of inertia continues to press rotation counterclockwise.This moment, motor can be regarded a generator as.According to the generator electromagnetic torque is resistive torque, and opposite this principle with the motor driven torque can be revolved stator (2) and be subjected to an anticlockwise torque as can be known.Under the effect of this torque, can revolve stator (2) will be by rotation counterclockwise.Behind the Rotate 180 ° angle, be subjected to stopping of left catch (4) and stop.At this moment, the S utmost point of magnet has arrived the right side, and the N utmost point has arrived the left side, with original fully opposite.Therefore, after the energized, rotor (3) rotation has in the direction of the clock conversely reached the purpose that commutates once more.(seeing accompanying drawing 2)

Automatic commutating micro DC motor of the present utility model, it is simple in structure, easy to manufacture, cost is also low, and control mode is simple and reliable. Can reduce the complete machine power consumption after the use. Electric power polarity be fix, can not reversal connection.

Claims

A kind of automatic reverse DC micromotor comprises motor housing [1], can revolve stator [2], rotor [3], left brush [5], commutator segment [6], right brush [7], it is characterized in that:

1) stator is the revolved stator [2] at the 180 ° of angles of can pivoting, and it is made up of stator case [11] and magnet [12], and fore bearing [9] and rear bearing [10] respectively are housed at the two ends of stator case [11];

2) left catch [4] and right catch [8] are separately fixed on the and arranged on left and right sides face of motor housing [1].