CN219067970U

CN219067970U - A accurate micromotor for intelligent lock

Info

Publication number: CN219067970U
Application number: CN202223389674.4U
Authority: CN
Inventors: 翁孟坤; 周志鹏; 简金才
Original assignee: Once Top Motor Manufacture Co ltd
Current assignee: Once Top Motor Manufacture Co ltd
Priority date: 2022-12-17
Filing date: 2022-12-17
Publication date: 2023-05-23
Anticipated expiration: 2032-12-17

Abstract

The utility model discloses a precise micro motor for an intelligent door lock, which comprises a stator assembly, a rotor assembly and a rear shell assembly, wherein the stator assembly comprises a shell and a magnet; the rear shell assembly comprises a rear shell and two electric brushes arranged on the rear shell, the rear shell is detachably arranged at one end of the machine shell, two power-on ports are formed in the rear shell, each power-on port is respectively provided with a conducting strip, and each conducting strip is respectively contacted with one electric brush so as to realize electric connection; the rotor assembly comprises a rotating shaft, a rotor iron core, a coil and a commutator, wherein the coil is wound on the silicon steel block, and the commutator is fixedly arranged on the rotating shaft and is electrically connected with the coil; one end of each electric brush is respectively overlapped on the commutator. The intelligent door lock is reasonable in structural layout, and the conducting strips and the electric brushes are arranged on the rear shell and are in direct contact connection, so that the volumes of the motor and the intelligent door lock can be reduced.

Description

A accurate micromotor for intelligent lock

Technical Field

The utility model belongs to the field of motors, and particularly relates to a precise micro motor for an intelligent door lock.

Background

Along with the development of society, the application of automatic control in life is more and more popular, but the personal and property safety closely related to human life is also more and more important, and traditional mechanical locks are easily pried open due to the fact that lock holes are reserved, and potential safety hazards are left, so that more and more traditional mechanical locks are replaced by intelligent door locks. The motor is used as an important component and a power supply part of the intelligent door lock, and is a technical key and a difficult point in the design of the intelligent door lock.

The current intelligent door lock of ordinary use on the market, the structural layout of motor is unreasonable, and the circular telegram mouth of motor is generally opened on the motor casing, and circular telegram mouth is separated by far away with the position of brush, needs to connect the wire to wind to make circular telegram mouth and brush realization electricity be connected on the brush, can increase the volume of motor and intelligent door lock like this for need bigger space when installing, the wire is also inconvenient at narrow and small inner space wiring moreover, also easily leads to the wire impaired when dismouting intelligent door lock.

Disclosure of Invention

Aiming at the defects or improvement demands of the prior art, the utility model provides the precise micro motor of the intelligent door lock motor, which has reasonable structural layout, and the energizing port and the electric brush are arranged on the rear shell and are in direct contact connection, so that the volumes of the motor and the intelligent door lock can be reduced.

To achieve the above object, according to one aspect of the present utility model, there is provided a precision micro motor for an intelligent door lock, comprising a stator assembly, a rotor assembly, and a rear housing assembly, wherein:

the stator assembly comprises a shell and a magnet fixedly arranged on the inner wall of the shell;

the rear shell assembly comprises a rear shell and two electric brushes arranged on the rear shell, the rear shell is detachably arranged at one end of the machine shell, two power-on ports are arranged on the rear shell, each power-on port is provided with a conducting strip, and each conducting strip is respectively contacted with one electric brush so as to realize electric connection;

the rotor assembly comprises a rotating shaft, a rotor iron core, a coil and a commutator, wherein the rotating shaft is arranged on the shell and the rear shell through a plurality of bearings, the rotor iron core comprises a silicon steel block and two insulating sheets which are connected together, the silicon steel block comprises a plurality of silicon steel sheets which are stacked together, the silicon steel block is positioned between the two insulating sheets, the coil is wound on the silicon steel block, the commutator is fixedly arranged on the rotating shaft, and the commutator is electrically connected with the coil;

one end of each electric brush is respectively overlapped on the commutator.

Preferably, one end of the shell close to the rear shell is provided with a first arc-shaped part, the rear shell is provided with a second arc-shaped part matched with the first arc-shaped part at a position corresponding to the first arc-shaped part, the outer side of the rear shell is provided with a mounting surface at a position corresponding to the second arc-shaped part, and the mounting surface is provided with the power-on port.

Preferably, three mounting tables are arranged side by side at positions corresponding to the power-on ports on the inner side of the rear shell, wherein the three mounting tables are respectively a first mounting table, a second mounting table and a third mounting table, and a distance exists between the two mounting tables, one electric brush is clamped and fixed by the first mounting table and the second mounting table, and the other electric brush is clamped and fixed by the second mounting table and the third mounting table.

Preferably, the commutator is welded with a piezoresistor.

Preferably, the rotating shaft is mounted on the rear shell through an oil-containing bearing, and an oil baffle is further arranged on the rear shell so as to prevent oil from leaking from the oil-containing bearing to the rotor core, the coil and the commutator.

Preferably, the commutator comprises an insulating rubber ring and a plurality of commutator segments, wherein the commutator segments are arranged around the insulating rubber ring and fixed on the insulating rubber ring, and the insulating rubber ring is fixedly arranged on the rotating shaft in a penetrating mode.

Preferably, the commutator segments are fixed on the insulating rubber ring through a retaining ring.

Preferably, a plurality of buckles are arranged on the shell, and the rear shell is fixed on the shell through the buckles.

Preferably, the two magnets are arranged symmetrically about the center line center of the rotating shaft, and a clamp spring is arranged between the two magnets and compresses the two magnets on the inner wall of the casing.

In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:

1) The utility model arranges the power-on port and the electric brush on the rear shell and enables the power-on port and the electric brush to be in direct contact connection, thereby abandoning the traditional wire connection mode, having reasonable structural design and being capable of reducing the volumes of the motor and the intelligent door lock.

2) The rotor core of the utility model adopts the silicon steel sheet, has strong magnetic conductivity, and can generate larger magnetic induction intensity in the coil, thereby effectively reducing the volume of the motor.

3) The commutator of the utility model is connected with the piezoresistor, which can play a role of voltage overload protection.

Drawings

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model;

FIG. 3 is a schematic illustration of the present utility model with the chassis and rear housing assembly removed;

FIG. 4 is a cross-sectional view of the present utility model;

fig. 5 is a schematic view of the rear housing assembly of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Referring to fig. 1 to 5, a precision micro motor for an intelligent door lock includes a stator assembly 1, a rotor assembly 2, and a rear case assembly 3, wherein:

the stator assembly 1 comprises a shell 11 and a magnet 12 fixedly arranged on the inner wall of the shell 11; the magnets 12 can be adhered to the inner wall of the casing 11, two magnets 12 are preferably arranged, the two magnets 12 are arranged symmetrically about the center line center of the rotating shaft 21, and a clamp spring 13 is arranged between the two magnets 12, the clamp spring 13 compresses the two magnets 12 on the inner wall of the casing 11, so that the clamp spring 13 is very convenient for installing and detaching the magnets 12.

The rear housing assembly 3 comprises a rear housing 31 and two brushes 32 mounted on the rear housing 31, the rear housing 31 is detachably mounted at one end of the housing 11, preferably a plurality of buckles are arranged on the housing 11, the rear housing 31 is fixed on the housing 11 through the buckles, and the rear housing 31 is convenient to disassemble and assemble. The rear shell 31 is provided with two electric conduction ports 33, each electric conduction port 33 is provided with a conducting strip, and each conducting strip is respectively contacted with one electric brush 32 to realize electric connection, so that the traditional wire connection is abandoned, the conducting strips of the electric conduction ports 33 are directly contacted and connected with the electric brush 32, and the whole volume of the motor can be reduced. The conductive piece at the power supply port 33 can be in direct contact with the brush 32 by welding or can be held in direct contact with the brush 32 by elastic force by the conductive piece, and both of these ways can ensure reliable contact and connection of the two.

The rotor assembly 2 comprises a rotating shaft 21, a rotor core, a coil 24 and a commutator, wherein the rotating shaft 21 is installed on the shell 11 and the rear shell 31 through a plurality of bearings 141, the rotor core comprises a silicon steel block and two insulating sheets 22 which are connected together, the silicon steel block comprises a plurality of silicon steel sheets 23 which are stacked together, the silicon steel sheet 23 has strong magnetic permeability, the silicon steel block is positioned between the two insulating sheets 22, the coil 24 is wound on the silicon steel block, the commutator is fixedly installed on the rotating shaft 21, the commutator is electrically connected with the coil 24, and the commutator is welded with the coil 24. The commutator comprises an insulating rubber ring and a plurality of commutator segments 27, wherein the commutator segments 27 are arranged around the insulating rubber ring and fixed on an insulating rubber ring 28, the insulating rubber ring 28 is fixedly arranged on the rotating shaft 21 in a penetrating manner, and the insulating rubber ring 28 can play an insulating role between the commutator segments and the rotating shaft 21. The commutator segments 27 are fixed on the insulating rubber ring 28 through the retaining ring 25, so that the commutator segments 27 are very convenient to assemble and disassemble. The commutator is preferably welded with a piezoresistor 26 for protecting voltage overload.

One end of each brush 32 is respectively lapped on the commutator. By cooperation of the brushes 32 with the commutator, an overall rotation of the rotor assembly 2 is achieved.

Further, the casing 11 is close to the one end of backshell 31 and has first arc portion, backshell 31 is provided with the second arc portion with first arc portion looks adaptation in the position that corresponds first arc portion, the outside of backshell 31 is provided with the installation face 331 in the position that corresponds to second arc portion, arrange on the installation face 331 the electric port 33, through the setting of such arc portion, conveniently arrange brush 32 and electric port 33, help the overall structure design of motor to optimize.

Further, three mounting tables, namely, a first mounting table 34A, a second mounting table 34B and a third mounting table 34C are provided side by side at positions corresponding to the energizing ports 33 on the inner side of the rear case 31 with a space therebetween, one of the brushes 32 is sandwiched and fixed by the first mounting table 34A and the second mounting table 34B, and the other brush 32 is sandwiched and fixed by the second mounting table 34B and the third mounting table 34C. The brush 32 is clamped by the mounting tables, so that the brush 32 is mounted very conveniently and quickly. In addition, the conductive sheet on the power-on port 33 can also extend into the gap between the mounting tables, and the conductive sheet and the electric brush 32 are lapped together and clamped by the two mounting tables together, so that the reliable contact and connection between the conductive sheet and the electric brush 32 can be ensured.

Further, the rotating shaft 21 is mounted on the rear housing 31 through an oil bearing 142, and an oil baffle 29 is further provided on the rear housing 31 to prevent oil from leaking from the oil bearing 142 to the rotor core, the coil 24 and the commutator.

According to the utility model, through optimizing the part structure and the installation position of the motor, the conducting strip at the power-on port 33 is in direct contact with the electric brush 32 to realize electric connection, so that the structural layout is reasonable, and the volume of the motor is reduced.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A accurate micromotor for intelligent door lock, its characterized in that includes stator module, rotor subassembly and backshell subassembly, wherein:

one end of each electric brush is respectively overlapped on the commutator.

2. The precision micro motor for an intelligent door lock according to claim 1, wherein one end of the casing close to the rear casing is provided with a first arc-shaped portion, the rear casing is provided with a second arc-shaped portion which is matched with the first arc-shaped portion at a position corresponding to the first arc-shaped portion, the outer side of the rear casing is provided with a mounting surface at a position corresponding to the second arc-shaped portion, and the power-on port is arranged on the mounting surface.

3. The precision micro motor for an intelligent door lock according to claim 1, wherein the inside of the rear case is provided with three mounting tables side by side at positions corresponding to the power-on ports, respectively a first mounting table, a second mounting table and a third mounting table with a space therebetween, the first mounting table and the second mounting table sandwiching and fixing one of the brushes, the second mounting table and the third mounting table sandwiching and fixing the other brush.

4. The precision micro-motor for an intelligent door lock according to claim 1, wherein the commutator is welded with a varistor.

5. The precise micro motor for intelligent door lock according to claim 1, wherein the rotating shaft is mounted on the rear housing through an oil bearing, and an oil baffle is further provided on the rear housing to prevent oil from leaking from the oil bearing to the rotor core, the coil and the commutator.

6. The precision micro-motor for an intelligent door lock according to claim 1, wherein the commutator comprises an insulating rubber ring and a plurality of commutator segments, the commutator segments are arranged around the insulating rubber ring and fixed on the insulating rubber ring, and the insulating rubber ring is fixedly arranged on the rotating shaft in a penetrating manner.

7. The precision micro-machine for intelligent door lock according to claim 6, wherein the commutator segment is fixed on the insulating rubber ring through a snap ring.

8. The precise micro motor for an intelligent door lock according to claim 1, wherein a plurality of buckles are provided on the housing, and the rear housing is fixed on the housing through the buckles.

9. The precise micro motor for the intelligent door lock according to claim 1, wherein the number of the magnets is two, the two magnets are arranged in a central symmetry manner about the central line of the rotating shaft, and a clamp spring is arranged between the two magnets, and the clamp spring compresses the two magnets on the inner wall of the casing.