CN107453509B

CN107453509B - Insulating block, motor with insulating block and motor installation method

Info

Publication number: CN107453509B
Application number: CN201710718729.6A
Authority: CN
Inventors: 任丽君; 李宁; 白冰; 周成海; 王周叶
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2017-08-21
Filing date: 2017-08-21
Publication date: 2023-06-27
Anticipated expiration: 2037-08-21
Also published as: CN107453509A

Abstract

The invention discloses an insulating block, a motor with the insulating block and a mounting method of the motor, wherein the insulating block comprises the following components: the insulation block comprises an insulation block body, wherein one side surface of the insulation block body is a covering surface, an accommodating groove is formed in the covering surface, the side surface of the insulation block body adjacent to the covering surface is a middle surface, at least one middle surface is provided with a lead opening, the lead opening penetrates through the covering surface, and one side, close to the accommodating groove, of the lead opening is communicated with the accommodating groove. The insulating block can reliably isolate the lead connection position and is convenient to install.

Description

Insulating block, motor with insulating block and motor installation method

Technical Field

The invention relates to the technical field of motor structures, in particular to an insulating block, a motor with the insulating block and a motor installation method.

Background

Along with the rapid development of brushless direct current motors, the production efficiency and reliability of the motors become the focus of attention, and the current motors are gradually increased by adopting an external controller mode, so that the cost can be effectively reduced and the production process is simplified due to the external controller, and meanwhile, the controller is synthesized in a control board of the whole machine to be more convenient for overall control. The external controller needs to be electrically connected with the stator contact pin in the motor, and in the prior art, direct lead wires of the switching circuit board are omitted, so that the cost is reduced, but the safety and the reliability of the direct lead wires need to be particularly concerned.

As shown in fig. 1, most current motors employ insulation sheets to insulate motor windings from end caps, and the motor includes: stator 2, be located the rotor of stator 2, cover the end cover 4 on stator 2, be equipped with wiring ring plate 21 in the stator 2, insulating piece 1 'is located between wiring ring plate 21 and the end cover 4, be equipped with the bellying of cover on stator contact pin 5 on the insulating piece 1', the defect of this kind of scheme is mainly that the size control of insulating piece is difficult to hold, insulating piece size has been little and has possibly led to insulating failure, and insulating piece size has probably aroused after the perk end cover and shifted and influence insulating effect, also can bring trouble for the production assembly of motor.

Therefore, how to design an insulation block that can reliably isolate the lead connection and is convenient for installation is a technical problem to be solved in the industry.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides an insulating block, a motor with the insulating block and a motor mounting method.

The invention adopts the technical scheme that an insulating block is designed, and comprises: the insulation block body, one side of insulation block body is the cover face, is equipped with the holding tank on the cover face, and the side that is adjacent with the cover face on the insulation block body is the intermediate level, is equipped with the lead wire opening on at least one intermediate level, and the lead wire opening runs through to the cover face on, and the one side that is close to the holding tank on the lead wire opening communicates with each other with the holding tank.

Preferably, two opposite middle surfaces of the insulating block body are provided with lead openings, and the connecting edges of the accommodating groove and the lead openings are provided with chamfers.

Preferably, the insulation block body is further provided with at least one bump for mounting the insulation block body.

In the first embodiment, the bump is disposed on the middle surface, and one surface of the bump is flush with the cover surface, and a pair of bumps are symmetrically disposed on two sides of the accommodating groove.

In the second embodiment, the protruding block is disposed on the covering surface, and a pair of grooves for dividing the covering surface to form the protruding block are symmetrically disposed on both sides of the receiving groove.

The invention also provides a motor with the insulating block, which comprises: the stator, locate stator winding in the stator, cover the end cover on the stator, be equipped with the wiring annular plate that is located between stator winding and the end cover in the stator, be equipped with at least one stator contact pin on the wiring annular plate, be connected with the power lead on the stator contact pin, the insulator body covers on the stator contact pin, the power lead is drawn forth from the lead opening.

Preferably, the insulation block body is also provided with at least one lug for installing the insulation block body, and the wiring ring plate is provided with a fixing groove for accommodating the lug for insertion.

The invention also provides an installation method of the motor, which comprises the following steps:

step 1, fixedly connecting a power lead to a stator pin;

step 2, fixedly mounting an insulating block body on the wiring ring plate, covering the stator pins by the insulating block body, and leading out power leads from the lead openings and then leading out wires through a wire clamp on the outer side of the stator;

and step 3, buckling the end cover on the stator.

Compared with the prior art, the invention has the following advantages:

1. the insulation block is provided with an accommodating groove, the connecting part of the lead is covered by the accommodating groove, the lead is led out from the opening of the lead, and the connecting part of the lead is completely isolated from other parts, so that a stable and reliable insulation effect is achieved;

2. the insulation block is provided with a bump, and the motor is provided with a groove matched with the bump, so that the insulation block is effectively fixed at the connection position of the lead, and the influence of displacement of the insulation block on installation is avoided;

3. the insulating block has a simple structure, is convenient to install, can realize automatic installation and production, and improves production efficiency.

Drawings

The invention is described in detail below with reference to examples and figures, wherein:

FIG. 1 is a schematic view of a prior art stator, insulator sheet and end cap disassembled;

fig. 2 is a schematic view showing the internal structure of an insulating block according to a first embodiment of the present invention;

fig. 3 is a schematic view showing the external structure of an insulating block according to a first embodiment of the present invention;

fig. 4 is a schematic view showing the internal structure of an insulating block according to a second embodiment of the present invention;

fig. 5 is a schematic view showing the external structure of an insulating block according to a second embodiment of the present invention;

FIG. 6 is a schematic perspective view of an insulator block installed in the motor of the present invention;

FIG. 7 is a schematic top view of an insulator block installed in the motor of the present invention;

FIG. 8 is a schematic view in partial cross-section of an insulation block installed in a motor in accordance with the present invention;

FIG. 9 is a schematic top view of a stator structure of a first embodiment of the present invention;

fig. 10 is a schematic perspective view of a stator structure according to a first embodiment of the present invention;

FIG. 11 is a schematic top view of a stator structure according to a second embodiment of the present invention;

fig. 12 is a schematic perspective view of a stator structure according to a second embodiment of the present invention.

Detailed Description

As shown in fig. 2 to 5, the present invention proposes an insulating block comprising: the insulation block body 1 is made of insulation materials. One surface of the insulating block body 1 is a covering surface 11, the side surface of the insulating block body 1 adjacent to the covering surface 11 is a middle surface, the covering surface 11 is provided with an accommodating groove 12 which is inwards sunken to form a cavity, a lead connecting position is covered by the accommodating groove 12, at least one middle surface of the insulating block body 1 is provided with a lead opening 13, the lead opening 13 penetrates through the covering surface 11, one side of the lead opening 13, which is close to the accommodating groove 13, inwards extends to be communicated with the accommodating groove 12, and the lead is led out of the insulating block body 1 from the lead opening 13 after the lead connecting position is covered.

Preferably, two opposite middle surfaces of the insulating block body 1 are provided with lead openings 13, when in use, the lead openings 13 which are more convenient for outgoing lines can be selected, the connecting edges between the accommodating groove 12 and the lead openings 13 are provided with chamfers 14, and the chamfers 14 have guiding function, so that the accommodating groove 12 is conveniently covered on the lead connecting parts.

Further, at least one bump 15 is further provided on the insulating block body 1, and the bump 15 is used for fixedly mounting a portion where the lead wire connection portion is located, so as to prevent the insulating block body 1 from being displaced. In the first embodiment, the bump 15 is disposed on the middle surface, and one surface of the bump 15 is flush with the cover surface 11, and the bump 15 may be disposed on one side of the accommodating groove 12, as shown in fig. 2 and 3, it is preferable that a pair of bumps 15 are symmetrically distributed on two sides of the accommodating groove 12, and a fixing groove matching with the shape of the cover surface 11 is disposed at the position where the lead wire connection is located, and the cover surface 11 is inserted into the fixing groove for fixing during installation.

In the second embodiment, the bump is disposed on the cover surface, the bump may be disposed on the cover surface separately, the portion where the lead wire connection portion is located is provided with a fixing groove matching with the shape of the bump, and the bump is inserted into the fixing groove for fixing during installation. As shown in fig. 4 and 5, it is preferable that the bump is formed by dividing the cover surface by the groove 16, a pair of grooves 16 are symmetrically arranged at two sides of the accommodating groove 12, the groove 16 penetrates through the cover surface 11 to divide the cover surface into bumps, a fixing groove matched with the shape of the cover surface 11 is arranged at the position where the lead wire is connected, and the cover surface 11 is inserted into the fixing groove for fixing during installation.

As shown in fig. 6 to 8, the present invention also proposes a motor having the above-mentioned insulating block, comprising: stator 2, stator winding 3 and end cover 4, stator winding 3 locate in the stator 2, and end cover 4 lock is on stator 2, is equipped with the wiring annular plate 21 that is located between stator winding 3 and the end cover 4 in the stator 2, is equipped with at least one stator contact pin 5 on the wiring annular plate 21. In general, three stator pins are arranged in the motor, the inner ends of the stator pins are connected with the stator winding, the outer ends of the stator pins 5 are connected with power leads 6, the insulating block body 1 covers the stator pins 5, and the power leads 6 are led out from the lead openings 13. The end of the stator 2 provided with the wiring ring plate 21 is provided with a wire clamp 7, the wire clamp 7 is fixed on the outer wall of the stator 2 and communicated to the inside of the stator 2, and the power supply lead 6 is led out from the lead opening 13 and then penetrates out of the stator 2 from the wire clamp 7.

The wiring ring plate 21 is provided with a fixing groove 22 for receiving the projection of the insulating block body 1. As shown in fig. 2 to 3 and 9 to 10, in the first embodiment, the insulating block body 1 is square, the insulating block body 1 has four intermediate surfaces, two of the intermediate surfaces opposite to each other are provided with lead openings 13, the other two intermediate surfaces opposite to each other are symmetrically provided with a pair of protruding blocks 15, one surface of each protruding block 15 is flush with the cover surface 11, and the wiring ring plate 21 is provided with a fixing groove 22 matching with the shape of the cover surface 11. As shown in fig. 4 to 5 and 11 to 12, in the second embodiment, the insulating block body 1 is square, the insulating block body 1 has four intermediate surfaces, two of the intermediate surfaces opposite to each other are provided with lead openings 13, the other two intermediate surfaces opposite to each other are symmetrically provided with a pair of grooves 16, the grooves 16 penetrate through the cover surface to divide the cover surface into bumps, and the wiring ring plate 21 is provided with fixing grooves 22 matching with the shape of the cover surface 11.

step 1, fixedly connecting a power lead 6 to a stator pin 5;

step 2, covering the stator pins 5 with the insulating block body 1, leading out the power leads 6 from the lead openings 13, inserting the insulating block body 1 on the wiring ring plate 21, and penetrating the power leads 6 out of the stator 2 through the wire clamps 7 on the outer wall of the stator 2;

and 3, buckling the end cover 4 on the stator 2.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. The motor with the insulation block comprises an insulation block body (1), wherein the motor comprises a stator (2), a stator winding (3) arranged in the stator (2) and an end cover (4) covered on the stator (2), a wiring ring plate (21) arranged between the stator winding (3) and the end cover (4) is arranged in the stator (2), at least one stator contact pin (5) is arranged on the wiring ring plate (21), a power supply lead (6) is connected to the stator contact pin (5), the insulation block body (1) is covered on the stator contact pin (5), and the power supply lead (6) is led out from a lead opening (13);

the insulation block is characterized in that one surface of the insulation block body (1) is a cover surface (11), an accommodating groove (12) is formed in the cover surface (11), the side surface, adjacent to the cover surface (11), of the insulation block body (1) is a middle surface, the insulation block body (1) is square, four middle surfaces are arranged on the insulation block body (1), lead openings (13) are formed in the middle surfaces opposite to each other in two positions, a pair of protruding blocks (15) are symmetrically distributed on the middle surfaces opposite to each other in two positions, one surface of each protruding block (15) is flush with the cover surface (11), a fixing groove (22) matched with the cover surface (11) in shape is formed in the wiring ring plate (21), the lead openings (13) penetrate through the cover surface (11), and one side, close to the accommodating groove, of each lead opening (13) is communicated with the accommodating groove (12).

2. An electric machine according to claim 1, characterized in that the connecting edge of the receiving groove (12) and the lead opening (13) is provided with a chamfer (14).

3. A method of installing an electric machine as claimed in claim 1, comprising the steps of:

step 1, fixedly connecting a power lead (6) to a stator contact pin (5);

step 2, fixedly mounting an insulating block body (1) on a wiring ring plate (21), covering a stator contact pin (5) by the insulating block body (1), and leading out a power supply lead (6) from a lead opening (13) and then leading out the power supply lead through a wire clamp (7) at the outer side of the stator (2);

and 3, buckling the end cover (4) on the stator (2).