CN217769629U - DC motor - Google Patents

Abstract

The utility model provides a direct current motor, which comprises a housing, two magnetic shoes are installed to the nested installation of casing inner wall symmetry, and chassis bottom seal installation has the back lid, the inside rotor subassembly that is equipped with of casing, the rotor subassembly includes the axle branch, install the fore bearing on the inner wall of casing top, when the device switches on, through having increased the motor performance to the winding improvement of rotor on original basis, the process and the manufacturing cost of motor have been reduced, carry out vacuum epoxy coating film back to the motor rotor again, motor earth leakage protection's stability greatly increased, the performance and the stability that increase the motor on original basis have expanded the practicality of this kind of motor, and then make the motor can exert his maximum performance and other uses of motor, set up the positive negative pole that can clearly distinguish the motor when assembling through back lid screens and casing position simultaneously, wiring mistake leads to the motor to turn to the mistake when preventing the motor test.

Description

DC motor

Technical Field

The utility model relates to a direct current motor technical field specifically is a direct current motor.

Background

The direct current motor is an electromagnetic device which realizes electric energy conversion or transmission according to an electromagnetic induction law, and after a direct current power supply is switched on, the direct current motor makes a rotor of the motor and a magnetic field start to rotate through contact with a commutator, so that the direct current motor is widely applied to the fields of intelligent door locks, other household toy industries and the like;

when the conventional dc motor in the market needs to reach the maximum use performance, the outer diameter of the motor must be increased to increase the use of the motor, so that the motor is limited, and thus certain defects exist.

On the other hand, in the production process of the existing direct current motor, the coil winding of the motor often needs manual work to assemble a coil holder, so that the assembly operation is difficult, the production efficiency of workers is reduced, and certain defects exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a direct current motor to solve the problem that proposes in the above-mentioned background art, the utility model discloses novel structure has simplified the machining precision of motor in principle, makes the motor reassembling performance stronger, and stability is higher, has extended the practical of this kind of motor, and then makes the motor can exert his maximum performance and motor usage.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a direct current motor, includes the casing, two magnetic shoes are installed to the casing inner wall symmetry nestification, and bottom of the case sealing installation has the hou gai, the inside rotor subassembly that is equipped with of casing, the rotor subassembly includes the axle branch, install the fore bearing on the casing top inner wall, and the position that the back lid corresponds the fore bearing is equipped with the rear bearing, the both ends of axle branch are installed respectively in the front on bearing and the rear bearing, and the axle branch passes through the fore bearing and the rear bearing is connected with casing and rear cover rotation.

Furthermore, a commutator is installed at the rear end of the shaft branch, and a sleeve is fixedly installed at the front end of the shaft branch.

Furthermore, an adjusting washer is installed at the joint of the shaft branch and the front bearing, and an oil baffle plate is installed at the joint of the shaft branch and the rear bearing.

Furthermore, a stopping sheet is fixed on the inner side surface of the rear cover at a position corresponding to the rear bearing, and the rear bearing is fixedly arranged on the stopping sheet.

Furthermore, the rear bearing outer ring is provided with two groups of electric brushes which are clamped and installed inside the rear cover.

Furthermore, an iron core is fixedly mounted on the surface of the shaft branch, and the iron core is arranged in the shell and is tightly matched with the two magnetic shoes in the corresponding position.

Furthermore, the outside of the iron core is provided with a vacuum epoxy coating.

The utility model has the advantages that: the utility model relates to a direct current motor, which comprises a casing; a magnetic shoe; a front bearing; a sleeve; an iron core; adjusting the washer; a commutator; a rear bearing; a rear cover; a stopping sheet; an oil baffle plate; shaft branches; an electric brush; a rotor assembly; and (5) vacuum epoxy coating.

1. The direct current motor simplifies the processing precision of the motor in principle, enables the motor to be assembled again, has stronger performance and higher stability, expands the practical application of the motor and further enables the motor to exert the maximum performance and the motor application.

2. This direct current motor rotor subassembly part adopts the optimization, carries out the wire winding again after adding the line frame by original manual work, changes into can directly wind the line after carrying out vacuum epoxy coating film now on the iron core, the efficiency of the motor that improves greatly to and increase the stability of motor, when traditional motor performance reaches the limit, use this kind of motor can increase 20% motor performance again.

3. Compared with the prior art, when the direct current motor is powered on, the performance of the motor is improved on the original basis through the improvement of rotor winding, the process and the manufacturing cost of the motor are reduced, after vacuum epoxy coating is carried out on the motor rotor, the stability of motor leakage protection is greatly increased, the performance and the stability of the motor are improved on the original basis, the practicability of the motor is improved, the motor can further play the maximum performance of the motor and other purposes of the motor, meanwhile, the positive and negative poles of the motor can be clearly distinguished when the motor is assembled through the rear cover clamping position and the shell position, and the motor steering error caused by the wiring error in the motor test is prevented.

Drawings

Fig. 1 is a schematic view of an overall structure of a dc motor according to the present invention;

fig. 2 is an exploded view of a dc motor according to the present invention;

fig. 3 is a schematic structural view of a stator assembly of a dc motor according to the present invention;

fig. 4 is a schematic structural diagram of a rotor assembly of a dc motor according to the present invention;

fig. 5 is a second schematic structural diagram of a rotor assembly of a dc motor according to the present invention;

fig. 6 is a schematic structural view of a rear cover of a dc motor according to the present invention;

in the figure: 1. a housing; 2. a magnetic shoe; 3. a front bearing; 4. a sleeve; 5. an iron core; 6. an adjusting washer; 7. a commutator; 8. a rear bearing; 9. a rear cover; 10. a stop piece; 11. an oil baffle plate; 12. a shaft branch; 13. an electric brush; 14. a rotor assembly; 15. and (5) vacuum epoxy coating.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a direct current motor, includes casing 1, casing 1 inner wall symmetry nested installs two magnetic shoes 2, and casing 1 bottom seal installs back lid 9, casing 1 is inside to be equipped with rotor subassembly 14, rotor subassembly 14 includes axle branch 12, install front bearing 3 on the casing 1 top inner wall, and back lid 9 corresponds the position of front bearing 3 and is equipped with back bearing 8, the both ends of axle branch 12 are installed respectively on front bearing 3 and back bearing 8, and axle branch 12 is connected with casing 1 and back lid 9 rotation through front bearing 3 and back bearing 8, and casing 1, magnetic shoe 2 and front bearing 3 have constituteed rotor subassembly 14 jointly, when assembling stator subassembly, at first steadily impress front bearing 3 in the bearing room of casing 1 inside, assemble magnetic shoe 2 on the frock simultaneously, then magnetize stator subassembly again, install rotor subassembly 14 with stator subassembly cooperation, later through back lid 9 sealed casing 1 bottom, stator subassembly, rotor subassembly 14, back lid 9 is gone on after accomplishing the motor assembly, when assembling again lid 9 sets up with the screens subassembly and realizes through positive negative pole installation with the casing 9 correctly (the motor of installing).

In the embodiment, the commutator 7 is installed at the rear end of the shaft branch 12, the sleeve 4 is fixedly installed at the front end of the shaft branch 12, the adjusting washer 6 is installed at the joint of the shaft branch 12 and the front bearing 3, the oil baffle plate 11 is installed at the joint of the shaft branch 12 and the rear bearing 8, the iron core 5 is fixedly installed on the surface of the shaft branch 12, the iron core 5 is arranged in the casing 1 and is tightly matched with the two magnetic shoes 2 (no other parts are needed to reinforce the magnetic shoes 2), the rotor assembly 14 comprises the shaft branch 12, the iron core 5, the commutator 7, the oil baffle plate 11, the sleeve 4, the pressure-sensitive adjusting washer 6, the shaft branch 12 is riveted into the iron core 5, the sleeve 4 is installed at the front end of the rotor, the commutator 7 is installed at the rear end of the winding machine for winding, the first package is welded after the winding is finished, the welding of the wire ends is welded, the pressure-sensitive cleaning agent is ultrasonically cleaned, the commutator 7 is dried and polished, the rotor is installed at the rear end of the adjusting washer 11 and the front section of the adjusting washer 6.

In this embodiment, a vacuum epoxy coating 15 is disposed outside the iron core 5; the performance of the motor can not be exerted to the highest performance due to the fact that the number of turns of winding is small when the rotor is wound by the wire frame, the number of turns of winding is increased by 20% compared with that of winding of a traditional wire frame after the rotor passes through the vacuum epoxy coating film 15, the performance of the motor is increased by 20% on the original basis, and the stability of the motor is improved when the rotor of the vacuum epoxy coating film 15 is used.

This embodiment, the position that the inboard surface of back lid 9 corresponds rear bearing 8 is fixed with end separation blade 10, and rear bearing 8 fixed mounting is on ending separation blade 10, the 8 outer lanes in back bearing are equipped with two sets of brushes 13, and the joint of brush 13 is inside installing at back lid 9, and back lid 9 subassembly is divided by back lid 9, brush 13, rear bearing 8 and backstop piece 10 four bibliographic categories and is constituteed, will end separation blade 10 pack into back lid 9 bottom after again with back bearing 8 impress back lid 9 bearing indoor, carry out the riveting after inserting the both sides notch of back lid 9 with some brushes again.

In the embodiment, the coil winding of the rotor is set to 0.08/3UEW/180 turns; the length of the direct current motor main body is less than or equal to 35mm, and the diameter of the direct current motor main body is less than or equal to 15mm; the rotor core 5 is set to 22.5mm in size; winding the coil winding without passing through the bobbin

The working principle is as follows: the direct current motor comprises three parts of a stator component, a rotor component 14, a rear cover 9 and a front oil-containing bearing and a rear oil-containing bearing, wherein the stator component comprises a machine shell 1, a front bearing 3 and a magnetic shoe 2, when the stator component is assembled, the front bearing 3 is stably pressed into a bearing chamber in the machine shell 1, the magnetic shoe 2 is fixed on a tool for assembly, then the stator component is magnetized, the rotor component 14 comprises a shaft branch 12, an iron core 5, a commutator 7, an oil baffle plate 11, a sleeve 4 and a pressure-sensitive and adjusting washer 6, when the rotor component 14 is assembled, the shaft branch 12 is riveted into the iron core 5, the sleeve 4 is arranged at the front end of the rotor, and the commutator 7 is arranged at the rear end, then the rotor is placed on a winding machine for winding, after the winding is finished, the wire head is welded on the first package, after the wire head is welded, the pressure sensitivity is welded, then the welded product is subjected to ultrasonic cleaning, then the cleaning agent is dried, then the commutator 7 is polished and ground, the oil baffle plate 11 is arranged at the rear end of the rotor, the adjusting washer 6 is arranged at the front section of the rotor, the rear cover 9 assembly is composed of four parts, namely a rear cover 9, an electric brush 13, a rear bearing 8 and a baffle plate 10, the baffle plate 10 is arranged at the bottom of the rear cover 9, then the rear bearing 8 is pressed into a bearing chamber of the rear cover 9, the point brushes are inserted into notches at two sides of the rear cover 9 for riveting, the stator assembly, the rotor assembly 14 and the rear cover 9 assembly are assembled, and the wiring test of the positive electrode and the negative electrode of the motor can be correctly identified.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. A direct current motor comprising a casing (1), characterized in that: casing (1) inner wall symmetry is nested installs two magnetic shoes (2), and casing (1) bottom sealing installation has back lid (9), casing (1) inside is equipped with rotor subassembly (14), rotor subassembly (14) are including axle branch (12), install fore bearing (3) on casing (1) top inner wall, and the position that back lid (9) correspond fore bearing (3) is equipped with rear bearing (8), install respectively on fore bearing (3) and rear bearing (8) at the both ends of axle branch (12), and axle branch (12) rotate with casing (1) and back lid (9) through fore bearing (3) and rear bearing (8) and are connected.

2. A direct current motor according to claim 1, wherein: the rear end of the shaft branch (12) is provided with a commutator (7), and the front end of the shaft branch (12) is fixedly provided with a sleeve (4).

3. A direct current motor according to claim 2, wherein: an adjusting washer (6) is installed at the joint of the shaft branch (12) and the front bearing (3), and an oil baffle plate (11) is installed at the joint of the shaft branch (12) and the rear bearing (8).

4. A direct current motor according to claim 3, wherein: a stop piece (10) is fixed on the inner side surface of the rear cover (9) at a position corresponding to the rear bearing (8), and the rear bearing (8) is fixedly installed on the stop piece (10).

5. A direct current motor according to claim 4, wherein: two sets of electric brushes (13) are arranged on the outer ring of the rear bearing (8), and the electric brushes (13) are clamped and installed inside the rear cover (9).

6. A direct current motor according to claim 2, wherein: an iron core (5) is fixedly mounted on the surface of the shaft branch (12), and the iron core (5) is arranged in the machine shell (1) and is tightly matched with the two magnetic shoes (2) in the corresponding position.

7. A direct current motor according to claim 6, wherein: and a vacuum epoxy coating (15) is arranged outside the iron core (5).

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