Direct-current brush micromotor with sunk terminal

Abstract

The utility model relates to the technical field of direct current brush micromotors, and provides a direct current brush micromotor with a sunk terminal, which comprises a motor main body, an iron rear cover assembly is arranged at the top of the motor main body, a rubber cover assembly is arranged below the iron rear cover assembly in the motor main body, and an iron shell assembly is arranged at the bottom of the motor main body. The iron rear cover assembly, the rubber cover assembly and the iron shell assembly are sequentially distributed on the motor body from top to bottom. According to the utility model, under the mutual cooperation of the iron rear cover assembly, the rubber cover assembly, the iron shell assembly and the rotor iron chip assembly, the rubber cover micromotor with the concave structure, which is high in reliability and simple to assemble, is designed, the problems of easy deformation and interference of terminals are effectively solved, and the space utilization of the terminal positions is optimized; the position of the terminal installed on the rubber cover is designed to be of a concave structure, the terminal is not exposed after installation, the problem that the motor is not convenient to install due to collision deformation is solved, and the problems of space interference and short circuit risk are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of direct current brush micro motor, especially to a terminal sunken direct current brush micro motor. BACKGROUND

[0002] The direct current brush micro motor is a rotating motor that converts direct current into mechanical energy (direct current motor) or converts mechanical energy into direct current (direct current generator). Its core structure includes a stator and a rotor, the stator is equipped with magnetic poles and brushes, and the rotor is equipped with windings and commutators. The direct current brush micro motor works through the cooperation of the brushes and the commutators to realize the conversion of electric energy and the continuous rotation of the motor. Specifically, the brushes and the commutators are in constant contact and friction, which plays a role in conducting electricity and commutation in rotation. By changing the position of the brush, the direction of the current changes, thereby driving the motor to rotate.

[0003] The conventional direct current brush micro motor uses an exposed and fixed structure scheme for the positive and negative terminals. The exposed terminals are prone to deformation during transportation and use, which is not conducive to installation. When the whole machine is installed, the protruding position is easy to interfere with other components, which has a greater risk of short circuit. SUMMARY

[0004] To solve the above problems, the utility model provides a terminal sunken direct current brush micro motor to more accurately solve the problem of easy deformation of the traditional micro motor terminal and easy interference with other components.

[0005] The utility model is realized by the following technical schemes:

[0006] The utility model provides a terminal sunken direct current brush micro motor, including motor main part, the top of motor main part is provided with iron back cover assembly, and the inside of motor main part is located below iron back cover assembly and is provided with rubber cover assembly, the bottom of motor main part is provided with iron shell assembly, iron back cover assembly, rubber cover assembly and iron shell assembly are sequentially distributed on motor main part from top to bottom in order, and the inner wall of iron back cover assembly, rubber cover assembly and iron shell assembly is provided with rotor iron core piece assembly.

[0007] Further, the iron back cover assembly includes an iron back cover, a spherical bearing, and a pressure ring. The iron back cover is arranged on the top of the motor main body, the spherical bearing is installed on the bottom of the iron back cover, and the pressure ring is installed on the bottom of the iron back cover. The pressure ring is arranged on the outer side of the spherical bearing.

[0008] Further, the iron shell assembly includes an iron shell, a magnet, an upright bearing, and a magnet stop pin. The iron shell is arranged on the outside of the motor main body, and is fixedly connected to the bottom outer wall of the iron back cover. The symmetrical magnets are installed on the inner walls of the two sides of the iron shell. The upright bearing is installed on the bottom inner wall of the iron shell. The magnet stop pin is arranged on the bottom outer wall of the magnet.

[0009] Further, the rubber cover assembly comprises a rubber cover, a terminal, a carbon, a brush arm, an inductor and a capacitor, wherein the rubber cover is arranged at the bottom of the iron back cover, the terminal comprises two and is distributed on the two sides of the top of the rubber cover, the carbon is located inside the rubber cover and is arranged on the outer wall of one side of the terminal, the brush arm comprises two and is installed on the obliquely opposite sides of the inner wall of the rubber cover, the carbon is fixedly connected to the inner wall of one end of the brush arm, the inductor is installed at both ends of the inner wall of the rubber cover, and the capacitor is arranged on the two sides of the top of the rubber cover.

[0010] Further, the rotor core assembly comprises a motor shaft, a commutator, an oil stop sheet, a heat dissipation fan blade, a thrust and an adjusting sheet, wherein the motor shaft is arranged in a penetrating mode between the spherical bearing and the vertical bearing, the commutator is installed on the top of the outer wall of the motor shaft, the oil stop sheet is located on the top of the commutator and is attached to the outer wall of the motor shaft, the heat dissipation fan blade is installed on the outer wall of the commutator, the thrust is arranged on the bottom of the outer wall of the motor shaft, and the adjusting sheet is arranged on the bottom of the outer wall of the thrust.

[0011] Further, the terminal position of the rubber cover is recessed inward in a fan shape with a depth of 7 mm and a maximum width of 8.5 mm.

[0012] Further, the maximum outer diameter of the rubber cover is φ 42.3 mm, and the height is 13.4 mm, and the distance between the top of the terminal after installation and the bottom of the iron shell is 1 mm.

[0013] Further, the side surface of the butterfly mouth of the iron shell is provided with a notch, and the depth size of the notch is 8.5 mm, and the width size of the notch is 11 mm.

[0014] The utility model discloses a beneficial effect:

[0015] The utility model discloses a kind of DC brush micro motor of terminal sinking, under the mutual cooperation of iron back cover assembly, rubber cover assembly, iron shell assembly and rotor core assembly, design a reliable and simple assembly concave structure rubber cover micro motor, effectively solve terminal easy deformation and interference problem and optimize terminal position space utilization.

[0016] First, the terminal position of rubber cover installation designs concave structure, terminal is not exposed after installation, solve the problem of unfavorable installation due to collision deformation of motor, in addition, since terminal is not exposed, solve the problem of space interference and short circuit risk, simultaneously, relative to conventional rubber cover structure, the rubber cover micro motor of the design of the utility model is helpful to customer replacement use, optimizes terminal position, improves space utilization. DRAWINGS

[0017] Figure 1 It is the overall structure section view of the motor main body of the utility model;

[0018] Figure 2 The overall structure of the motor body is shown in the top view of the utility model;

[0019] Figure 3 The overall structure of the motor body is shown in the side view of the utility model;

[0020] Figure 4 The structure of the iron rear cover assembly is shown in the schematic view of the utility model;

[0021] Figure 5 The structure of the rubber cover assembly is shown in the schematic view of the utility model Figure 1 ;

[0022] Figure 6 The structure of the rubber cover assembly is shown in the schematic view of the utility model Figure 2 ;

[0023] Figure 7 The structure of the rotor core piece assembly is shown in the schematic view of the utility model.

[0024] The reference signs are as follows:

[0025] In the drawing: 1, iron rear cover assembly; 2, rubber cover assembly; 3, iron shell assembly; 4, rotor core piece assembly; 5, motor shaft; 6, spherical bearing; 7, pressure ring; 8, terminal; 9, carbon; 10, brush arm; 11, inductor; 12, capacitor; 13, magnet; 14, upright bearing; 15, magnet stop needle; 16, commutator; 17, oil stop sheet; 18, cooling fan blade; 19, thrust; 20, adjusting piece; 21, motor body. DETAILED DESCRIPTION

[0026] In order to more clearly and completely illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings.

[0027] Please refer to Figures 1-7 The utility model discloses a terminal sinks direct current brush micro motor, including motor body 21, the top of motor body 21 is provided with iron rear cover assembly 1, and the inside of motor body 21 is located below iron rear cover assembly 1 and is provided with rubber cover assembly 2, the bottom of motor body 21 is provided with iron shell assembly 3, iron rear cover assembly 1, rubber cover assembly 2 and iron shell assembly 3 are sequentially distributed in order from top to bottom on motor body 21, and the inner wall of iron rear cover assembly 1, rubber cover assembly 2 and iron shell assembly 3 is provided with rotor core piece assembly 4.

[0028] Iron rear cover assembly 1 includes iron rear cover, spherical bearing 6 and pressure ring 7, wherein iron rear cover is set up at the top of motor body 21, spherical bearing 6 is installed at the bottom of iron rear cover, pressure ring 7 is installed at the bottom of iron rear cover, and pressure ring 7 is set up at the outside of spherical bearing 6.

[0029] The iron shell assembly 3 comprises an iron shell, a magnet 13, an upright bearing 14 and a magnet stop needle 15, wherein the iron shell is arranged outside the motor body 21 and fixedly connected to the bottom outer wall of the iron back cover, the symmetrically distributed magnets 13 are installed on the inner walls of the two sides of the iron shell, the upright bearing 14 is installed on the bottom inner wall of the iron shell, and the magnet stop needle 15 is arranged on the bottom outer wall of the magnet 13.

[0030] The rubber cover assembly 2 comprises a rubber cover, a terminal 8, a carbon 9, a brush arm 10, an inductor 11 and a capacitor 12, wherein the rubber cover is arranged at the bottom of the iron back cover, the terminal 8 comprises two and is distributed on the two sides of the top of the rubber cover, the carbon 9 is located inside the rubber cover and arranged on the outer wall of one side of the terminal 8, the brush arm 10 comprises two and is installed on the obliquely opposite inner walls of the rubber cover, the carbon 9 is fixedly connected to the inner wall of one end of the brush arm 10, the inductor 11 is installed on the two ends of the inner wall of the rubber cover, and the capacitor 12 is arranged on the two sides of the top of the rubber cover.

[0031] The rotor core assembly comprises a motor shaft 5, a commutator 16, an oil stop piece 17, a heat dissipation fan blade 18, a thrust 19 and an adjusting piece 20, wherein the motor shaft 5 is arranged through between the spherical bearing 6 and the upright bearing 14, the commutator 16 is installed on the top of the outer wall of the motor shaft 5, the oil stop piece 17 is located on the top of the commutator 16 and adheres to the outer wall of the motor shaft 5, the heat dissipation fan blade 18 is installed on the outer wall of the commutator 16, the thrust 19 is arranged on the bottom of the outer wall of the motor shaft 5, and the adjusting piece 20 is arranged on the bottom outer wall of the thrust 19.

[0032] In the embodiment, under the cooperation of the iron back cover assembly 1, the rubber cover assembly 2, the iron shell assembly 3 and the rotor core assembly 4, a rubber cover micro motor with high reliability and simple assembly is designed, and the problems of terminal deformation and interference are effectively solved and the space utilization of the terminal position is optimized.

[0033] Firstly, the terminal 8 of the rubber cover is designed as an inwardly recessed structure, and after installation, the terminal 8 is not exposed, thereby solving the problem of unfavorable installation due to deformation caused by collision of the motor, and in addition, since the terminal 8 is not exposed, the problems of space interference and short circuit risk are solved, and at the same time, compared with the conventional rubber cover structure, the rubber cover micro motor of the present design is helpful for customer replacement, the position of the terminal 8 is optimized, and the space utilization is improved.

[0034] The terminal 8 of the rubber cover is recessed inwardly by a fan-shaped depth of 7 mm and a maximum width of 8.5 mm. The maximum outer diameter of the rubber cover is φ 42.3 mm and the height is 13.4 mm, and the distance between the top of the installed terminal 8 and the bottom of the iron shell is 1 mm.

[0035] The side surface of the iron shell butterfly mouth is provided with a notch, and the depth size of the notch is 8.5 mm and the width size of the notch is 11 mm.

[0036] The motor body 21 is composed of four parts of the iron back cover assembly 1, the rubber cover assembly 2, the iron shell assembly 3 and the rotor iron core piece assembly 4;

[0037] The iron back cover assembly 1 is composed of the iron back cover, the spherical bearing 6 and the pressing ring 7;

[0038] The rubber cover assembly 2 is composed of the rubber cover, the terminal 8, the carbon 9, the brush arm 10, the inductor 11 and the capacitor 12;

[0039] The iron shell assembly 3 is composed of the iron shell, the magnet 13, the vertical bearing 14 and the magnet stop needle 15;

[0040] The rotor iron core piece assembly 4 is composed of the motor shaft 5, the commutator 16, the oil stop sheet 17, the heat dissipation fan blade 18, the thrust 19 and the adjusting sheet 20;

[0041] After the DC brush micro motor is connected with the power supply through the terminal 8, the current is connected with the commutator 16 through the inductor 11, the brush arm 10 and the carbon 9, the commutator 16 winding installed on the rotor is connected with the commutator 16 through the copper hook of the commutator 16 to form the power supply winding, and the rotor rotates in the permanent magnetic field of the stator due to the action of the Lorentz force.

[0042] Of course, the utility model also can have other various implementation manners, based on the implementation manner, the ordinary skilled in the art obtains other implementation manners without any creative labor, and all belong to the range protected by the utility model.

Claims

1. A DC brush micro motor with terminal sinking, characterized in that, The motor body is provided with an iron back cover assembly at the top, a rubber cover assembly below the iron back cover assembly, and an iron shell assembly at the bottom.

2. The DC brushed micromotor with terminal sinking according to claim 1, characterized in that, The iron back cover assembly includes an iron back cover, a spherical bearing, and a press ring.

3. The DC brushed micromotor with terminal sinking according to claim 1, characterized in that, The iron shell assembly includes an iron shell, a magnet, an upright bearing, and a magnet stop needle.

4. The DC brushed micromotor with terminal sinking according to claim 1, characterized in that, The rubber cover assembly includes a rubber cover, a terminal, a carbon, a brush arm, an inductor, and a capacitor.

5. The DC brushed micromotor with terminal sinking according to claim 1, characterized in that, The rotor core assembly includes a motor shaft, a commutator, an oil stopper, a cooling fan blade, a thrust, and an adjusting sheet.

6. The DC brushed micromotor with terminal sinking according to claim 4, characterized in that, The terminal position of the rubber cover is recessed inwardly in a fan shape with a depth of 7 mm and a maximum width of 8.5 mm.

7. The DC brushed micromotor with terminal sinking according to claim 4, characterized in that, The maximum outer diameter of the rubber cover is φ 42.3 mm, and the height is 13.4 mm.

8. The DC brushed micromotor with terminal sinking according to claim 3, characterized in that, The side surface of the iron shell butterfly mouth is provided with a notch with a depth of 8.5 mm and a width of 11 mm.

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