CN109327106B - Outlet box and motor thereof - Google Patents
Outlet box and motor thereof Download PDFInfo
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- CN109327106B CN109327106B CN201811449375.0A CN201811449375A CN109327106B CN 109327106 B CN109327106 B CN 109327106B CN 201811449375 A CN201811449375 A CN 201811449375A CN 109327106 B CN109327106 B CN 109327106B
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- wire
- outlet box
- hole
- outlet
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A wire outlet box and a motor thereof belong to the technical field of junction boxes in the household appliance industry, and particularly comprise a wire outlet box body and a sealing gasket structure, wherein the wire outlet box body is internally provided with a main cavity and an auxiliary cavity, and the auxiliary cavity is provided with a wire outlet, a wire inlet and an injection molding hole; the corresponding position of the sealing gasket structure used in combination with the outlet box body is provided with an inlet, an outlet hole and a plastic backflow hole; the inner electric wire and the outer electric wire of the motor enter the auxiliary cavity in the outlet box body through the outlet box body and the sealing structure to be connected, and then are fixed on the motor in an injection molding mode. The connecting parts are limited in the isolated cavity-attached region, and the connecting parts cannot be contacted with each other, so that the running safety of the motor is improved, the pulling of electric wires in the motor during injection molding is reduced, and the injection molding manufacturability is improved.
Description
Technical Field
The invention belongs to the technical field of junction boxes in the household appliance industry, and particularly relates to an outlet box and a motor thereof.
Background
The wire outlet box is an indispensable component in the motor structural component, has a mechanical protection effect on the lead wire, and leads (wires or cables) led out from the motor are led out from the wire outlet structure after passing through an inner cavity of the wire outlet box. When the wires are required to be connected with external wires inside the outlet box, the wires are usually connected in a soldering tin or terminal cold pressing mode, and in order to insulate the connection part, the connection part needs to be covered with insulating materials such as a heat shrinkage tube or an insulating sleeve.
However, when the motor runs with load, the motor body repeatedly vibrates due to the electromagnetic force, the motor body can drive the wire connecting part to vibrate, the sleeve wrapped on the connecting part can move or even fall off due to long-term vibration, the metal parts of the connecting part can be exposed after the sleeve falls off, the exposed connecting parts are in contact with each other, and potential safety hazards are generated. In order to prevent the connecting part from moving, the stator is generally subjected to injection molding at present, and after the injection molding material is solidified, the connecting part is completely fixed, so that the safety is greatly enhanced.
But the in-process is moulded plastics to the outlet box, and the injection molding material flows into the outlet box from the motor inside, and when the injection molding material velocity of flow was very fast, there was following potential safety hazard: (1) the injection molding material impacts the wire connecting part, and the moving range of the connecting part is large and the distance is long, so that the inner wire of the motor is pulled; (2) the injection molding material strikes the wire connection part, and the connection part is crowded to a department, and close contact each other, and when the motor operation, switch on between the different connection parts, produce the potential safety hazard.
Disclosure of Invention
In order to solve the technical problems and achieve the purposes of reducing the dragging of the electric wire inside the motor during the injection molding of the stator, improving the injection molding manufacturability and improving the operation safety of the motor, the invention adopts the technical scheme that:
an outlet box comprises an outlet box body, wherein a main cavity body is arranged inside the outlet box body, an auxiliary cavity body is arranged in the main cavity body, a first wire inlet and a second wire inlet are arranged on the auxiliary cavity body, a first wire extends into the auxiliary cavity body from the first wire inlet, a second wire extends into the auxiliary cavity body from the second wire inlet, and a connecting part is formed in the auxiliary cavity body by the first wire and the second wire.
A side wall of the main cavity is provided with a wire outlet.
Further, the number of the auxiliary cavities is at least 2.
The opening of the second wire inlet is smaller than the connecting part.
The first electric wire is an internal electric wire of the motor, and the second electric wire is an external electric wire of the motor.
Further, the first wire inlet is open or semi-open.
Furthermore, the second wire inlet is a notch arranged on the side wall of the auxiliary cavity or a through hole positioned on the side surface of the auxiliary cavity.
The side wall of the auxiliary cavity is provided with an injection molding hole.
Furthermore, the outlet box also comprises a sealing gasket structure. The sealing gasket structure is provided with a through hole, and the position of the through hole corresponds to the position of the first wire inlet.
Furthermore, the sealing gasket structure is provided with a backflow hole, and the first electric wire and the second electric wire are connected and then sequentially injected through the through hole, the first wire inlet, the injection molding hole and the backflow hole.
Furthermore, the sealing gasket structure is composed of two vertical surfaces, one surface of the sealing gasket structure is a matching surface with the wire outlet of the main cavity, an outer wire outlet is arranged on the matching surface, and the position of the outer wire outlet is opposite to the second wire inlet.
Further, the periphery of the matching surface is of a corrugated structure.
Furthermore, a positioning boss is arranged on the outlet box body, a positioning boss hole is arranged on the sealing gasket structure, and the positioning boss corresponds to the positioning boss hole in position and is the same in size.
The invention further provides a motor which comprises any one of the outlet boxes.
When the internal electric wire of the motor passes through the wire outlet hole of the sealing gasket structure (namely the sealing gasket structure) of the wire outlet box and enters the wire outlet box attached cavity, the external electric wire passes through the wire outlet hole of the matching surface of the wire outlet box of the sealing gasket structure of the wire outlet box and enters the attached cavity. The internal electric wire is connected with the external electric wire, the connecting part of the internal electric wire is horizontally placed into the auxiliary cavity, the main body of the outlet box and the sealing gasket structure are combined according to corresponding positions, injection molding is carried out on the auxiliary cavity through the injection molding hole, after the injection molding material is solidified, the connecting part is completely fixed, and the safety is greatly enhanced. And then the outlet box is fixed on the motor body.
Because different connecting parts are arranged in different auxiliary cavities, the connecting parts are separated from each other and are not contacted with each other, the metal parts of the connecting parts can be prevented from being exposed, the exposed connecting parts are contacted with each other, and potential safety hazards are generated. Because attach the cavity, there is the appurtenance all around at the coupling part, the coupling part receives the injection molding material to strike the back, and the coupling part top can not continue to remove on the appurtenance all around, alleviates the pulling to the inside electric wire of motor. And the connecting parts are limited in a closed area formed by the peripheral attached walls, and cannot leave the closed area under the impact of injection molding materials, so that the connecting parts cannot be contacted.
The specific steps for installing the outlet box of the invention are as follows:
(1) after a power line in the motor passes through a wire outlet on the motor, the power line passes through a wire outlet of the sealing gasket structure and then enters the auxiliary cavity through a first wire inlet of the auxiliary cavity; after the external electric wire passes through the wire outlet on the sealing structure and the wire outlet on the wire outlet box body, the external electric wire enters the auxiliary cavity through the first wire inlet of the auxiliary cavity, and the internal electric wire and the external electric wire are connected in the auxiliary cavity.
(2) And after the positioning boss on the outlet box body passes through the positioning boss hole on the sealing structure, the positioning boss corresponds to the positioning hole on the motor.
(3) The screw passes through the screw hole on the outlet box body and the screw hole on the sealing gasket structure and is fixedly connected with the screw mounting hole on the motor.
(4) During injection molding, the injection molding material flows into the auxiliary cavity from the stator winding (inside the stator main body) through the shell wire outlet hole and the sealing gasket through hole, then flows into the main cavity through the injection molding hole, and then flows back to the stator winding through the sealing gasket backflow hole and the shell backflow hole. And when moulding plastics, the motor is put on one side, and the injection molding material gets into from the horizontal direction and attaches the cavity, and later, from bottom to top flows, and the manufacturability is better.
The invention has the beneficial effects that:
1. the movable range of the connecting part is small, so that the pulling of the electric wire in the motor is reduced;
2. the connection parts are limited in the closed area, and the connection parts are not contacted with each other, so that the safety of the motor during operation is improved.
3. The periphery of the connecting part is provided with the auxiliary wall, after the connecting part is impacted by injection molding materials, the connecting part can be propped against the peripheral auxiliary wall and can not move any more, so that the pulling of the electric wire in the motor is reduced (the length of the electric wire from the connecting part to the stator winding needs to be reasonably set, and if the length of the electric wire is too short, the effect is reduced;
4. the moving range of the connecting parts is limited in an auxiliary cavity formed by the auxiliary wall, and the connecting parts are isolated and cannot be contacted with each other, so that the safety of the motor in operation is improved;
5. the wall is provided with the injection molding hole, so that the injection molding material can flow between the main cavity body and the auxiliary cavity body conveniently, the pressure required by injection molding is reduced, and the injection molding manufacturability is improved.
Drawings
FIG. 1 is a schematic view of an outlet box body;
FIG. 2 is a schematic diagram of the internal structure of the outlet box body;
FIG. 3 is a gasket construction;
FIG. 4 is a motor mounting outlet box structure;
FIG. 5 is a view of the mounting of the outlet box to the motor;
FIG. 6 is a schematic view of the internal structure of the outlet box body;
FIG. 7 is a flow diagram of the injection molding compound.
Note: 1. screw holes; 2. an auxiliary cavity; 3. attaching a wall; 4. a main chamber; 5. positioning the boss; 6. the structure is matched with the sealing gasket structure; 7. a wire inlet; 71. a power line inlet hole; 72. an external wire entrance hole; 8. injection molding holes; 9. a main wall; 10. positioning boss holes; 11. screw holes; 12 wire outlet holes; 121. the sealing pad is provided with an outer power line outlet; 122. a power line outlet inside the motor is arranged on the sealing pad; 13 matching surface with the outlet box; 14 a gasket backflow hole; 15. a main body return orifice; 16. positioning holes; 17. a wire outlet hole; 18. a screw mounting hole; 19. a gasket structure; 20. an external wire; 21. an internal wire; 22. a motor main body; 23. a connecting part; 24. an outlet box body; 25. a screw; 26. and (6) an outlet.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description, in order to facilitate the understanding and implementation of the invention by those skilled in the art.
The outlet box comprises an outlet box body 24 and a sealing gasket structure 19, wherein the outlet box body 24 mainly comprises a screw hole 1, an auxiliary cavity 2, an auxiliary wall 3, a main cavity 4, a positioning boss 5, an outlet sheath matching surface 6, a first wire inlet 71, a second wire inlet 72, an injection molding hole 8, a main wall 9 and an outlet 26, wherein the outlet sheath matching surface 6 is of a corrugated structure and is an opening edge structure of the outlet 26, as shown in fig. 1, 2 and 5.
As shown in fig. 3, the sealing gasket structure 19 mainly includes a positioning boss hole 10, a screw hole 11, a wire outlet hole 12, an injection molding material backflow hole 14, and a wire outlet box matching surface 13, wherein the matching surface 13 has a corrugated shape on the periphery and can be mutually embedded with the wire outlet sheath matching surface 6. As shown in fig. 4, the motor main body 22 mainly includes an injection material backflow hole 15, a positioning hole 16, a wire outlet hole 17, and a screw mounting hole 18.
The motor main body 22 structure comprises a plastic backflow hole 15, a positioning hole 16, a wire outlet hole 17 and a screw mounting hole 18, wherein the plastic backflow hole 15 corresponds to the plastic backflow hole 14 of the sealing gasket structure 19 in position and is the same in size; the positioning 16 corresponds to the positioning boss hole 10 and the positioning boss 5 in position and has the same size; the screw mounting hole 18 corresponds to the screw hole 1 on the outlet box body 24 and the screw hole 11 on the sealing gasket structure 19 in position and has the same size; the outlet hole 17 corresponds to the outlet 122 of the sealing gasket structure 19 and the first inlet 71 of the outlet box body 24.
The outlet box body 24 is provided with a peripheral main wall 9, the main wall 9 forms a main cavity 4, an open auxiliary cavity 2 is formed between the auxiliary wall 3 and the main wall 9, at least 2 auxiliary cavities (2) are formed, and the space occupied by the auxiliary cavities 2 is smaller than that of the main cavity 4. The auxiliary cavity 2 is open (as shown in fig. 6) or semi-open (as shown in fig. 2), and the opening of the upper surface of the auxiliary cavity 2 is a first wire inlet 71 for passing the power line of the motor. The side wall of the auxiliary cavity body 2 is provided with a second wire inlet 72 for the inlet of an external wire, and the size of the second wire inlet 72 is smaller than that of the connection part of the two wires. The second wire inlet 72 is a notch formed in the side wall of the auxiliary cavity 2 or a through hole formed in the side surface of the auxiliary cavity 2. The periphery of the outer wire inlet 72 is provided with injection holes 8 for allowing injection molding materials to pass through.
The connection method of the outlet box and the motor comprises the following steps:
the method comprises the following steps: after the power cord in the motor passes through the outlet 17 on the motor, the power cord passes through the outlet 122 of the sealing gasket structure 19 and enters the first inlet 71 of the auxiliary cavity 2; after passing through the outlet (121) on the sealing structure, the external electric wire passes through the outlet 26 on the outlet box body 24 and the second wire inlet 72 on the auxiliary cavity 2, and the internal electric wire and the external electric wire are connected in the auxiliary cavity 2.
Step two: after the positioning boss 5 on the outlet box body 24 passes through the positioning boss hole 10 on the sealing structure, the position corresponds to the position of the positioning hole 16 on the motor, at this time, the matching surface 13 with the outlet box on the sealing gasket structure 19 is embedded with the matching structure 6 with the sealing gasket structure 19 on the outlet box body 24, so that the matching surface 13 with the outlet box of the sealing gasket structure 19 is stably positioned in the outlet 26 on the outlet box body 24.
Step three: the screw 25 passes through the screw hole 1 on the outlet box body 24 and the screw hole 11 on the sealing gasket structure 19 to be fixedly connected with the screw mounting hole 18 on the motor.
Step four: during injection molding, the injection molding material flows from the stator winding (inside the stator main body) through the case outlet hole 17 and the sealing gasket hole 122, enters the auxiliary cavity 2, then enters the main cavity 4 through the injection molding hole 8, and then flows back to the stator winding through the sealing gasket return-flow hole 14 and the case return-flow hole 15, as shown in fig. 7.
When the internal electric wire 21 is connected with the external electric wire 20, the connection is carried out in modes of soldering tin or cold pressing of terminals and the like, when the motor runs with load, the motor main body 22 vibrates under the repeated action of electromagnetic force, the electric wire connecting part 23 vibrates along with the vibration, a sleeve wrapped on the connecting part 23 can move due to long-term continuous vibration, metal parts of the connecting part 23 can be exposed after the sleeve moves, the connecting parts 23 can be contacted with each other after being exposed, and potential safety hazards exist.
In order to prevent the connecting part 23 from moving, the stator is injected, and after the injection molding material is solidified, the connecting part 23 is completely fixed, so that the safety is enhanced. In order to enhance the insulating performance, the outlet box 24 is made of insulating materials such as plastics.
In order to achieve the purpose of the invention, the invention also provides a motor which comprises any motor outlet box.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the spirit of the present invention, and these modifications and decorations should also be regarded as being within the scope of the present invention.
Claims (11)
1. An outlet box comprises an outlet box body (24) and a sealing gasket structure (19), and is characterized in that,
a main cavity body (4) is arranged in the outlet box body (24), an auxiliary cavity body (2) is arranged in the main cavity body (4), a first wire inlet (71) and a second wire inlet (72) are arranged on the auxiliary cavity body (2), a first wire extends into the auxiliary cavity body (2) from the first wire inlet (71), a second wire extends into the auxiliary cavity body (2) from the second wire inlet (72), and the first wire and the second wire form a connecting part in the auxiliary cavity body (2),
the side wall of the auxiliary cavity (2) is provided with an injection molding hole (8),
the sealing gasket structure (19) is provided with a through hole (122) with the position corresponding to the position of the first wire inlet (71),
the sealing gasket structure (19) is provided with a backflow hole (14), and after the first electric wire and the second electric wire are connected, the first electric wire and the second electric wire are sequentially injected through the through hole (122), the first wire inlet (71), the injection molding hole (8) and the backflow hole (14).
2. An outlet box according to claim 1, characterized in that a side wall of the main body (4) has an outlet (26).
3. An outlet box according to claim 2, characterized in that said additional cavities (2) are at least 2.
4. An outlet box according to claim 1, characterized in that the opening of the second inlet (72) is smaller than the junction.
5. An outlet box according to claim 1, wherein said first electrical wire is an internal motor wire and said second electrical wire is an external motor wire.
6. An outlet box according to claim 5, characterized in that the first inlet (71) is open or semi-open.
7. An outlet box according to claim 4, characterized in that the second inlet (72) is a notch provided in the side wall of the auxiliary cavity (2) or a through hole located in the side of the auxiliary cavity (2).
8. An outlet box according to claim 7, characterized in that the sealing gasket structure (19) is composed of two vertical faces, one of which is a mating face (13) with the outlet (26) of the main body (4), the mating face (13) having an outer outlet (121), the outer outlet (121) being located opposite the second inlet (72).
9. An outlet box according to claim 8, characterised in that the periphery of the mating surface (13) is of a corrugated configuration.
10. An outlet box according to claim 9, characterized in that the outlet box body (24) is provided with a positioning boss (5), the sealing gasket structure (19) is provided with a positioning boss hole (10), and the positioning boss (5) corresponds to the positioning boss hole (10) in position and has the same size.
11. An electrical machine comprising an outlet box according to any of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449375.0A CN109327106B (en) | 2018-11-30 | 2018-11-30 | Outlet box and motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449375.0A CN109327106B (en) | 2018-11-30 | 2018-11-30 | Outlet box and motor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109327106A CN109327106A (en) | 2019-02-12 |
| CN109327106B true CN109327106B (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811449375.0A Active CN109327106B (en) | 2018-11-30 | 2018-11-30 | Outlet box and motor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109327106B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114172311B (en) * | 2021-12-06 | 2023-05-23 | 珠海格力电器股份有限公司 | Cover body structure, motor, compressor and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202889076U (en) * | 2012-09-29 | 2013-04-17 | 中山大洋电机制造有限公司 | Motor lead-outgoing structure |
| CN203326790U (en) * | 2013-07-26 | 2013-12-04 | 卧龙电气集团股份有限公司 | Motor with anti-loosening type connecting extension socket |
| CN106059486A (en) * | 2016-07-21 | 2016-10-26 | 湖南红太阳新能源科技有限公司 | Solar photovoltaic junction box |
| CN107888017A (en) * | 2017-12-11 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | The installation method of outlet box structure and plug |
| CN209134206U (en) * | 2018-11-30 | 2019-07-19 | 珠海格力电器股份有限公司 | A kind of outlet box and its motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7804212B2 (en) * | 2008-06-25 | 2010-09-28 | Emerson Electric Co. | Cooling tower sealant containment gasket |
-
2018
- 2018-11-30 CN CN201811449375.0A patent/CN109327106B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202889076U (en) * | 2012-09-29 | 2013-04-17 | 中山大洋电机制造有限公司 | Motor lead-outgoing structure |
| CN203326790U (en) * | 2013-07-26 | 2013-12-04 | 卧龙电气集团股份有限公司 | Motor with anti-loosening type connecting extension socket |
| CN106059486A (en) * | 2016-07-21 | 2016-10-26 | 湖南红太阳新能源科技有限公司 | Solar photovoltaic junction box |
| CN107888017A (en) * | 2017-12-11 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | The installation method of outlet box structure and plug |
| CN209134206U (en) * | 2018-11-30 | 2019-07-19 | 珠海格力电器股份有限公司 | A kind of outlet box and its motor |
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| Publication number | Publication date |
|---|---|
| CN109327106A (en) | 2019-02-12 |
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