CN209860689U

CN209860689U - Brushless micromotor

Info

Publication number: CN209860689U
Application number: CN201920736519.4U
Authority: CN
Inventors: 陈红; 袁理兵; 夏香宇
Original assignee: Friendship Electric Machinery Shenzhen Co Ltd
Current assignee: Friendship Electric Machinery Shenzhen Co Ltd
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2019-12-27
Anticipated expiration: 2029-05-21

Abstract

The utility model provides a brushless micromotor, the brushless micromotor comprises a bearing, an encapsulated rear wire frame terminal component, an encapsulated retainer component and a Hall plate component, wherein the encapsulated retainer component is arranged between the bearing and the Hall plate component; the encapsulated retainer component comprises a positioning ring, a connecting sheet A, a connecting sheet B and a connecting sheet C; the connecting piece C is arranged on the positioning ring, and the connecting piece A and the connecting piece B are symmetrically arranged on two sides of the connecting piece C; connection piece B is equipped with the bending ring, the bending ring overlaps to be established in the holding ring, connection piece B passes through the bending ring is installed the holding ring, connection piece A connection piece B all is equipped with the bending foot, the bending foot is installed in the holding ring, thereby makes connection piece A connection piece B install the holding ring, brushless micromotor simple structure, the assembly degree of difficulty are low, and can prevent the electric leakage.

Description

Brushless micromotor

Technical Field

The utility model belongs to the technical field of the motor and specifically relates to a brushless micromotor.

Background

The traditional direct current brushless micromotor usually adopts a winding enameled wire to be peeled and then welded on a PCB, and then is directly welded on the PCB through a socket or a lead, so that the mode has poor overcurrent capacity and is only suitable for a low-power low-rotating-speed motor. The existing brushless micromotor with high reliability and simple assembly is provided with an encapsulated retainer assembly and a terminal assembly, but a first connecting sheet, a second connecting sheet and a third connecting sheet of the encapsulated retainer assembly are mounted on a rubber mat and need to be accurately positioned, and the first connecting sheet, the second connecting sheet and the third connecting sheet need to be highly matched with the appearance of the rubber mat, so that the assembly difficulty is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a simple structure's brushless micromotor, the reliability is high and the assembly degree of difficulty is low.

The utility model discloses a following technical scheme realizes:

the utility model provides a brushless micromotor, brushless micromotor includes bearing, encapsulated back line frame terminal subassembly, encapsulated retainer subassembly, hall plate subassembly, encapsulated retainer subassembly is installed the bearing in between the hall plate subassembly.

Wherein the encapsulated cage assembly comprises a positioning ring, a connecting sheet A, a connecting sheet B and a connecting sheet C; the connecting piece B is provided with a bending ring, the bending ring is sleeved in the positioning ring, the connecting piece B is installed on the positioning ring through the bending ring, the connecting piece A and the connecting piece B are both provided with bending feet, and the bending feet are installed in the positioning ring, so that the connecting piece A and the connecting piece B are installed on the positioning ring.

Further, connecting piece C installs on the holding ring, connecting piece A, connecting piece B symmetry sets up connecting piece C both sides.

Furthermore, the bending foot comprises a ring foot and a connecting foot, the connecting foot is fixedly connected with the ring foot, and the ring foot is installed in the positioning ring.

Further, connection piece A is equipped with first phase line, terminal A, connection piece B is equipped with second phase line, terminal B, connection piece C is equipped with third phase line, terminal C, first phase line with terminal A fixed connection, the second phase line with terminal B fixed connection, the third phase line with terminal C fixed connection.

Further, the brushless micromotor comprises a stator, wherein the stator is provided with a winding, and current enters from the first phase line, the second phase line and the third phase line and flows into the winding through the terminal A, the terminal B and the terminal C.

Further, the terminal C includes a bent end and a terminal end, the bent end connects the bent ring and the terminal end, and when the connecting piece C is mounted on the positioning ring, the terminal end and the terminal a or the terminal B are at the same horizontal height.

Further, the holding ring includes the installation foot, the installation foot is equipped with the through-hole, hall plate subassembly includes the card foot, the card foot is equipped with the mounting groove, through-hole in the installation foot with mounting groove in the card foot link up mutually, the installation foot is installed on the card foot.

Further, the enclosed rear bobbin terminal assembly includes a plurality of terminal elements and a rear bobbin, the terminal elements being integrally connected with the rear bobbin.

Furthermore, brushless micromotor still includes preceding balancing piece, back balancing piece, fan blade subassembly, pivot, preceding balancing piece is installed with back balancing piece the stator both ends, the fan blade subassembly is installed the stator below, the stator is installed in the pivot.

The utility model has the advantages that: the brushless micromotor comprises a bearing, an encapsulated rear wire frame terminal component, an encapsulated retainer component and a Hall plate component, wherein the encapsulated retainer component is arranged between the bearing and the Hall plate component; the encapsulated retainer component comprises a positioning ring, a connecting sheet A, a connecting sheet B and a connecting sheet C; the connecting piece C is arranged on the positioning ring, and the connecting piece A and the connecting piece B are symmetrically arranged on two sides of the connecting piece C; connection piece B is equipped with the bending ring, the bending ring overlaps to be established in the holding ring, connection piece B passes through the bending ring is installed the holding ring, connection piece A connection piece B all is equipped with the bending foot, the bending foot is installed in the holding ring, thereby makes connection piece A connection piece B install the holding ring, brushless micromotor simple structure, the assembly degree of difficulty are low, and can prevent the electric leakage.

Drawings

FIG. 1 is a partially exploded view of the encapsulated cage assembly;

FIG. 2 is a schematic structural view of the encapsulated cage assembly;

FIG. 3 is a schematic structural diagram of the brushless micro-motor;

FIG. 4 is an exploded view of the brushless micro-motor;

FIG. 5 is a cross-sectional view of the brushless micro-motor;

FIG. 6 is a schematic view of the encapsulated rear frame terminal assembly of FIG. 5A;

FIG. 7 is a top view of the brushless micro-motor;

fig. 8 is a schematic view of the structure of the winding.

Detailed Description

For a more clear and complete description of the technical solution of the present invention, the following description is made with reference to the accompanying drawings.

Referring to fig. 1 to 8, the present invention provides a brushless micro-motor, which includes a bearing 8, an encapsulated rear wire frame terminal assembly 3, an encapsulated retainer assembly 1, and a hall plate assembly 2, wherein the encapsulated retainer assembly 1 is installed between the bearing 8 and the hall plate assembly 2.

Referring to fig. 1 and 2, the encapsulated cage assembly 1 includes a retaining ring 101, a connecting piece a60, a connecting piece B70, and a connecting piece C80; connecting piece B70 is equipped with crooked ring 702, crooked ring 702 cover is established in the holding ring 101, connecting piece B70 passes through crooked ring 702 is installed the holding ring 101, connecting piece A60 connecting piece B70 all is equipped with the foot 6010 of buckling, the foot 6010 of buckling is installed in the holding ring 101, thereby makes connecting piece A60 connecting piece B70 is installed the holding ring 101.

In this embodiment, the bending ring 702 and the bending leg 6010 are installed in the positioning ring 101, and the connecting piece a60, the connecting piece B70 and the connecting piece are installed on the positioning ring 101, so that the assembling difficulty is small.

Further, the connecting piece C80 is installed on the positioning ring 101, and the connecting piece a60 and the connecting piece B70 are symmetrically arranged at two sides of the connecting piece C80.

The holding ring 101 includes installation foot 103, installation foot 103 is equipped with the through-hole, hall plate subassembly 2 includes card foot 22, card foot 22 is equipped with the mounting groove, through-hole in the installation foot 103 with mounting groove in the card foot 22 link up mutually, installation foot 103 is installed on the card foot 22.

In this embodiment, the connecting piece B70 and the mounting foot 103 are arranged at intervals, and the connecting piece B70 is mounted between the connecting piece a60 and the connecting piece C80.

Further, connecting sheet a60 is provided with first phase line 602 and terminal a 601, connecting sheet B70 is provided with second phase line 703 and terminal B701, connecting sheet C80 is provided with third phase line 802 and terminal C801, first phase line 602 with terminal a 601 fixed connection, second phase line 703 with terminal B701 fixed connection, third phase line 802 with terminal C801 fixed connection.

The bent leg 6010 includes a loop leg 6012 and a connection leg, the connection leg is fixedly connected to the loop leg 6012, and the loop leg 6012 is installed in the positioning ring 101.

In this embodiment, the connecting sheet a60 the connecting sheet C80 all is equipped with the foot 6010 of buckling, encapsulated holder assembly 1 is equipped with the three-phase line, the three-phase line includes first phase line 602, second phase line 703, third phase line 802, first phase line 602 is the U phase line, second phase line 703 is the W phase line, third phase line 802 is the V phase line, encircle foot 6012 is the arc structure, encircle foot 6012 install in the holding ring 101, connect the foot and connect the first phase line 602 of connecting sheet a60 or the third phase line 802 of connecting sheet C80. When the connecting sheets a60 and C80 need to be assembled, the loop leg 6012 is directly installed in the positioning ring 101 to close the positioning ring 101, and the connecting sheets a60 and C80 are installed on the positioning ring 101.

Three-phase line (U phase line, W phase line, V phase line) is concentrated and is drawn forth, encapsulated retainer subassembly 1 structure can prevent the electric leakage, has reduced production processes and equipment, has reduced the motor space, has made things convenient for customer's use and assembly again, and the tradition is to high power, high rotational speed motor, and this part structure is complicated, and occupation space is big, production processes and equipment are many and with high costs.

Further, the enclosed rear bobbin terminal assembly 3 includes a plurality of terminal members 31 and a rear bobbin 32, and the terminal members 31 are integrally connected to the rear bobbin 32. The brushless micromotor comprises a stator 6, wherein the stator 6 is provided with a winding 5, and current enters from a first phase line 602, a second phase line 703 and a third phase line 802 and flows into the winding 5 through a terminal A601, a terminal B701 and a terminal C801.

In the present embodiment, the encapsulated rear bobbin terminal assembly 3 is fixedly connected to the winding 5.

Further, the terminal C801 includes a bent end 7010 and a terminal end 7011, the bent end 7010 connects the bent ring 702 and the terminal end 7011, and when the connecting piece C80 is mounted on the positioning ring 101, the terminal end 7011 is at the same level as the terminal a 601 or the terminal B701.

In order to mount the encapsulated cage assembly 1 to the hall plate assembly 2, the connection pad a60, the connection pad B70, and the connection pad C80 are at the same level.

Furthermore, the brushless micromotor further comprises a front balance block 10, a rear balance block 9, a fan blade assembly 11 and a rotating shaft 12, wherein the front balance block 10 and the rear balance block 9 are arranged at two ends of the stator 6, the fan blade assembly 11 is arranged below the stator 6, and the stator 6 is arranged on the rotating shaft 12. The brushless micromotor also comprises a Hall wire 23, wherein the Hall wire 23 is positioned between the encapsulated retainer component 1 and the encapsulated rear wire frame terminal component 3. The hall wire 23 is used for detecting the rotation speed of the brushless micromotor.

In this embodiment, the winding 5 is energized to generate a magnetic field, and the shaft 12 rotates. The encapsulated rear bobbin terminal assembly 3 and the encapsulated retainer assembly 1 are matched for use to replace the traditional PCB, and meanwhile, the winding 5 and the encapsulated rear bobbin terminal assembly 3 are welded in a spot welding mode without peeling.

Because the winding 5 and the encapsulated rear bobbin terminal component 3 adopt the resistance welding process, poor contact caused by welding cold solder can be prevented; the encapsulating type retainer assembly 1 and the encapsulating type rear wire frame terminal assembly 3 adopt an encapsulating and injection molding process, so that the production processes, equipment and labor for production are reduced, and the stability and reliability of the motor are improved; the encapsulated retainer assembly 1 also adopts an encapsulating and injection molding process, so that the overcurrent is improved to the maximum in a limited space, and the motor runs more stably.

Of course, the present invention can also have other various embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative work, and all of them belong to the protection scope of the present invention.

Claims

1. A brushless micromotor is characterized by comprising a bearing, an encapsulated rear wire frame terminal component, an encapsulated retainer component and a Hall plate component, wherein the encapsulated retainer component is arranged between the bearing and the Hall plate component;

wherein the encapsulated cage assembly comprises a positioning ring, a connecting sheet A, a connecting sheet B and a connecting sheet C;

the connecting piece B is provided with a bending ring, the bending ring is sleeved in the positioning ring, the connecting piece B is installed on the positioning ring through the bending ring, the connecting piece A and the connecting piece B are both provided with bending feet, and the bending feet are installed in the positioning ring, so that the connecting piece A and the connecting piece B are installed on the positioning ring.

2. The brushless micromotor according to claim 1, wherein said connection pad C is mounted on said positioning ring, said connection pads a and B being symmetrically disposed on both sides of said connection pad C.

3. The brushless micromotor according to claim 2, wherein said bent legs comprise loop legs, connection legs, said connection legs being fixedly connected to said loop legs, said loop legs being mounted in said positioning ring.

4. The brushless micromotor according to claim 1, wherein said connection piece a is provided with a first phase line and a terminal a, said connection piece B is provided with a second phase line and a terminal B, said connection piece C is provided with a third phase line and a terminal C, said first phase line is fixedly connected with said terminal a, said second phase line is fixedly connected with said terminal B, and said third phase line is fixedly connected with said terminal C.

5. The brushless micromotor according to claim 4, comprising a stator provided with a winding in which the current enters from said first, second and third phase lines, passes through said terminal A, said terminal B and said terminal C and flows into said winding.

6. The brushless micromotor according to claim 4, wherein said terminals C comprise bent ends and terminal ends, said bent ends connecting said bent rings with said terminal ends, said terminal ends being at the same level as said terminals A or said terminals B when said connecting piece C is mounted on said positioning ring.

7. The brushless micromotor according to claim 1, wherein said positioning ring comprises a mounting leg, said mounting leg is provided with a through hole, said hall plate assembly comprises a clamping leg, said clamping leg is provided with a mounting groove, said through hole in said mounting leg is communicated with said mounting groove in said clamping leg, and said mounting leg is mounted to said clamping leg.

8. The brushless micromotor of claim 1, wherein said encapsulated rear bobbin terminal assembly comprises a plurality of terminal elements and a rear bobbin, said terminal elements being integrally connected to said rear bobbin.

9. The brushless micromotor according to claim 5, further comprising a front balance block, a rear balance block, a fan blade assembly, and a rotating shaft, wherein the front balance block and the rear balance block are mounted at two ends of the stator, the fan blade assembly is mounted below the stator, and the stator is mounted on the rotating shaft.