CN215344181U

CN215344181U - Motor and electric fan

Info

Publication number: CN215344181U
Application number: CN202120600718.XU
Authority: CN
Inventors: 廖韶东
Original assignee: Foshan Shunde Youfei Electrical Technology Co ltd
Current assignee: Foshan Shunde Youfei Electrical Technology Co ltd
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-12-28
Anticipated expiration: 2031-03-23

Abstract

The utility model provides a motor and electric fan, the motor includes the motor shaft, a protecgulum and the back lid that is used for the installation and holds the stator, the protecgulum is equipped with the first protecgulum face of keeping away from the back lid, the motor shaft runs through first protecgulum face, and be equipped with the oil blanket on the motor shaft, the rear end face and the first protecgulum face of oil blanket laminate mutually, in order to prevent dust, or the hydrone in the humid air gets into in the motor, protecgulum and back lid fixed connection, and form the holding chamber that holds the stator between the two, assembly department between protecgulum and the back lid is equipped with the sealing washer, in order to prevent dust, or the hydrone in the humid air gets into the holding intracavity, make the motor reach dustproof through above-mentioned structure, waterproof effect. The motor has a dustproof and waterproof structure, so that the service life of the motor is prolonged; the front cover is provided with the plurality of radiating fins, so that the radiating area of the front cover is increased, heat of the motor reaches the radiating fins through heat transfer, and external cold air is in contact with the radiating fins, so that the radiating effect of the motor is improved.

Description

Motor and electric fan

Technical Field

The utility model relates to an electric appliance, in particular to a motor and an electric fan.

Background

The front cover of the traditional motor is divided into two parts, wherein one part is a front plate, and the other part is a cover body assembled with the front plate.

The motor shaft is not provided with a sealing structure on the position penetrating through the front cover, so that dust or water molecules in humid air are easy to enter the motor along the position, the motor is easy to fail to work normally, and the service life of the motor is shortened.

The motor front cover and the rear cover are not provided with a sealing structure generally and are fixed only by screws, if the motor front cover and the rear cover are used for a long time, the screws fail, and the screws are loosened between the motor front cover and the rear cover, so that dust or water molecules in humid air are easy to cause to enter the motor, the motor is easy to fail to work normally, and the service life of the motor is shortened.

The rear cover is provided with a wire hole through which an electric wire passes, and a sealing structure is not arranged between the wire hole and the electric wire, so that dust or water molecules in humid air easily enter the motor along the wire hole, the motor cannot normally work easily, and the service life of the motor is shortened.

Therefore, further improvements are desired.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a motor and an electric fan which have dustproof and waterproof structures and further prolong the service life of the motor so as to overcome the defects in the prior art.

A motor designed according to the purpose comprises a motor shaft, a front cover and a rear cover which are used for installing and containing a stator, wherein the front cover is provided with a first front cover face far away from the rear cover, the motor shaft penetrates through the first front cover face, an oil seal is arranged on the motor shaft, the rear end face of the oil seal is attached to the first front cover face, dust is prevented, or water molecules in humid air enter the motor, the front cover and the rear cover are fixedly connected, a containing cavity for containing the stator is formed between the front cover and the rear cover, a sealing ring is arranged at the assembly position between the front cover and the rear cover, dust is prevented, or water molecules in the humid air enter the containing cavity, and the motor achieves the dustproof and waterproof effects through the structure.

The protecgulum still is equipped with the second protecgulum that is close to first protecgulum to and be close to the third protecgulum of back lid, be equipped with a plurality of fin between second protecgulum and the third protecgulum, increase the heat radiating area of protecgulum, on the heat of motor passes through the heat transfer and arrives the fin, outside cold air and fin contact improve the radiating effect of motor, extension motor life.

The plurality of radiating fins are arranged at intervals, a radiating gap is formed between every two adjacent radiating fins, and the plurality of radiating fins are circumferentially distributed and arranged on the gap between the second front cover face and the third front cover face.

The back lid is equipped with the back capping of keeping away from first preceding capping, and the back capping is equipped with the line hole of interlude electric wire, and the line hole is equipped with the sealing member, and the electric wire passes the sealing member of line hole, and the hole of the surface of electric wire and sealing member contacts and forms sealedly to prevent that dust, or the hydrone in the humid air from getting into in the motor.

The sealing member material is silica gel, and the sealing member is equipped with the fixed slot of fixing on the line hole.

The oil seal is provided with a waist groove, and a spring for clamping a motor shaft is arranged in the waist groove.

In the assembly direction between the front cover and the rear cover, the front cover is provided with a sealing groove for mounting a sealing ring, and the rear cover is provided with a step surface which is in contact with the sealing ring and corresponds to the sealing groove.

The front cover is provided with a connecting part in the upward direction of an assembly prescription between the front cover and the rear cover, the rear cover is provided with a connecting hole corresponding to the connecting part, a mounting hole is arranged in the connecting part, a fastening piece is inserted between the mounting hole and the connecting hole, and the fastening piece is a screw, so that the front cover and the rear cover are fixedly connected and a sealing ring is clamped.

Be equipped with the first spacing step that is used for installing the stator in the protecgulum, be equipped with the second spacing step that is used for installing the stator in the back lid, the stator is spacing to be installed in the interval between first spacing step and the second spacing step, and the fixed stator of being convenient for improves assembly efficiency.

According to the electric fan of this purpose design, including back screen panel to and foretell motor, the protecgulum is equipped with first protecgulum and second protecgulum, is equipped with the boss between first protecgulum and the second protecgulum, and the boss is equipped with more than one spacing groove, and the back screen panel corresponds the boss and is equipped with the opening, and the opening is equipped with the turn-ups, and the turn-ups corresponds the spacing groove and is equipped with the location step, and the spacing installation of location step is on the spacing groove.

The utility model has the following beneficial effects:

be equipped with the oil blanket on the motor shaft, the rear end face and the first front cover face of oil blanket are laminated mutually to prevent that the hydrone in dust, or the humid air from getting into in the motor, the assembly department between front cover and the back lid is equipped with the sealing washer, in order to prevent that the hydrone in dust, or the humid air from getting into the holding intracavity, makes the motor reach dustproof, waterproof effect through above-mentioned structure.

The wire passes through the seal of the wire hole and the outer surface of the wire contacts and forms a seal with the inner bore of the seal to prevent dust or water molecules in the moist air from entering the motor.

Be equipped with a plurality of fin between second protecgulum and the third protecgulum, increase the heat radiating area of protecgulum, on the heat of motor arrived the fin through the heat transfer, outside cold air and fin contact improved the radiating effect of motor, extension motor life.

Drawings

Fig. 1 is a schematic perspective view of a motor according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of another orientation of a motor according to an embodiment of the utility model.

Fig. 3 is an exploded view of the motor according to an embodiment of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an enlarged view of fig. 3 at B.

Fig. 6 is an enlarged view of fig. 3 at C.

Fig. 7 is a schematic view of an internal structure of a motor according to an embodiment of the present invention.

Fig. 8 is an exploded view of the rear mesh enclosure and the motor according to an embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view illustrating an assembly of a rear mesh enclosure and a motor according to an embodiment of the present invention.

Fig. 10 is an enlarged view of fig. 9 at D.

In the figure, 1 is a stator, 2 is a front cover, 2.1 is a first front cover surface, 2.2 is a second front cover surface, 2.3 is a third front cover surface, 2.4 is a limit groove, 2.5 is a first limit step, 2.6 is a boss, 3 is a rear cover, 3.1 is a rear cover surface, 3.2 is a wire hole, 3.3 is a step surface, 3.4 is a second limit step, 4 is a motor shaft, 5 is an oil seal, 6 is an accommodating cavity, 7 is a seal ring, 8 is a heat sink, 9 is a seal member, 9.1 is a fixing groove, 10 is a seal groove, 11 is a connecting portion, 11.1 is a mounting hole, 12 is a connecting hole, 13 is a rear mesh cover, 13.1 is an opening portion, 13.2 is a flange, 13.3 is a positioning step, and 14 is a first bearing fixing groove.

Detailed Description

The utility model is further described with reference to the following figures and examples.

Referring to fig. 1, fig. 3, a motor, including motor shaft 4, be used for the installation and hold protecgulum 2 and the back lid 3 of stator 1, protecgulum 2 is equipped with the first protecgulum 2.1 of keeping away from back lid 3, motor shaft 4 runs through first protecgulum 2.1, and is equipped with oil blanket 5 on the motor shaft 4, the rear end face and the first protecgulum 2.1 of oil blanket 5 laminate mutually, protecgulum 2 and back lid 3 fixed connection, and form the holding chamber 6 that holds stator 1 between the two, the assembly department between protecgulum 2 and the back lid 3 is equipped with sealing washer 7.

Referring to fig. 1 and 2, the front cover 2 is further provided with a second front cover 2.2 close to the first front cover 2.1 and a third front cover 2.3 close to the rear cover 3, a plurality of cooling fins 8 are arranged between the second front cover 2.2 and the third front cover 2.3, the plurality of cooling fins 8 are arranged at intervals, and a cooling gap is formed between every two adjacent cooling fins 8.

In the present embodiment, a first bearing fixing groove 14 for mounting a bearing is provided in the front cover 2, a second bearing fixing groove 15 for mounting a bearing is provided in the rear cover 3, and the motor shaft 4 is inserted into a shaft hole of the bearing.

A plurality of cooling fins 8 are circumferentially distributed in the gap between the second front cover 2.2 and the third front cover 2.3.

Referring to fig. 3, the rear cover 3 is provided with a rear cover surface 3.1 far away from the first front cover surface 2.1, the rear cover surface 3.1 is provided with a wire hole 3.2 for inserting a wire, the wire hole 3.2 is provided with a sealing element 9, the wire passes through the sealing element 9 of the wire hole 3.2, and the outer surface of the wire is in contact with the inner hole of the sealing element 9 to form sealing.

In this embodiment, the rear cover face 3.1 of the rear cover 3 is also provided with a connection column for connecting the motor housing.

The sealing element 9 is made of silica gel, and the sealing element 9 is provided with a fixing groove 9.1 fixed on the line hole 3.2.

The oil seal 5 is provided with a waist groove, and a spring for clamping the motor shaft 4 is arranged in the waist groove.

Referring to fig. 4, in the assembly direction between the front cover 2 and the rear cover 3, the front cover 2 is provided with a sealing groove 10 for mounting the sealing ring 7, and the rear cover 3 is provided with a step surface 3.3 corresponding to the sealing groove 10 for contacting the sealing ring 7.

Referring to fig. 5 and 6, in the assembly direction between the front cover 2 and the rear cover 3, the front cover 2 is further provided with a connecting portion 11, the rear cover 3 is provided with a connecting hole 12 corresponding to the connecting portion 11, a mounting hole 11.1 is formed in the connecting portion 11, and a fastener is inserted between the mounting hole 11.1 and the connecting hole 12 so as to form a fixed connection between the front cover 2 and the rear cover 3 and clamp the sealing ring 7.

In this embodiment, the front cover 2 is provided with an annular insertion rib and the rear cover 3 is provided with an annular insertion groove in the upward direction of the assembly between the front cover 2 and the rear cover 3, and the annular insertion rib is inserted into the annular insertion groove during assembly.

Referring to fig. 7, a first limit step 2.5 for installing the stator 1 is arranged in the front cover 2, a second limit step 3.4 for installing the stator 1 is arranged in the rear cover 3, and the stator 1 is limited and installed in an interval between the first limit step 2.5 and the second limit step 3.4.

Referring to fig. 8-10, an electric fan comprises a rear mesh enclosure 13 and the motor, wherein the front cover 2 is provided with a first front cover surface 2.1 and a second front cover surface 2.2, a boss 2.6 is arranged between the first front cover surface 2.1 and the second front cover surface 2.2, the boss 2.6 is provided with more than one limiting groove 2.4, the rear mesh enclosure 13 is provided with an opening 13.1 corresponding to the boss 2.6, the opening 13.1 is provided with a flange 13.2, the flange 13.2 is provided with a positioning step 13.3 corresponding to the limiting groove 2.4, and the positioning step 13.3 is installed on the limiting groove 2.4 in a limiting way.

In this embodiment, the rear mesh enclosure 13 is provided with a first screw hole, the second front cover surface 2.2 is provided with a second screw hole corresponding to the first screw hole, the screw is inserted into the first screw hole and the second screw hole, and the rear mesh enclosure 13 is fixedly connected with the front cover 2.

The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and the utility model is intended to be protected by the following claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An electric machine comprising a motor shaft (4), a front cover (2) and a rear cover (3) for mounting and housing a stator (1), characterized in that: protecgulum (2) are equipped with first protecgulum (2.1) of keeping away from back lid (3), and motor shaft (4) run through first protecgulum (2.1), and be equipped with oil blanket (5) on motor shaft (4), the rear end face and first protecgulum (2.1) of oil blanket (5) are laminated mutually, protecgulum (2) and back lid (3) fixed connection, and form holding chamber (6) that hold stator (1) between the two, assembly department between protecgulum (2) and back lid (3) is equipped with sealing washer (7).

2. The electric machine of claim 1, wherein: protecgulum (2) still are equipped with second protecgulum (2.2) near first protecgulum (2.1) to and be close to third protecgulum (2.3) of back lid (3), be equipped with a plurality of fin (8) between second protecgulum (2.2) and the third protecgulum (2.3), a plurality of fin (8) each other are the interval setting, form heat dissipation clearance between two adjacent fin (8).

3. The electric machine of claim 2, wherein: the plurality of radiating fins (8) are circumferentially distributed on a gap between the second front cover surface (2.2) and the third front cover surface (2.3).

4. The electric machine of claim 1, wherein: back lid (3) are equipped with back capping (3.1) of keeping away from first preceding capping (2.1), and back capping (3.1) are equipped with line hole (3.2) of interlude electric wire, and line hole (3.2) are equipped with sealing member (9), and the electric wire passes sealing member (9) in line hole (3.2), and the hole of the surface of electric wire and sealing member (9) contacts and forms sealedly.

5. The electric machine of claim 4, wherein: the sealing element (9) is made of silica gel, and the sealing element (9) is provided with a fixing groove (9.1) fixed on the line hole (3.2).

6. The electric machine according to any of claims 1-5, characterized in that: the oil seal (5) is provided with a waist groove, and a spring for clamping the motor shaft (4) is arranged in the waist groove.

7. The electric machine of claim 6, wherein: in the assembly direction between the front cover (2) and the rear cover (3), the front cover (2) is provided with a sealing groove (10) for installing a sealing ring (7), and the rear cover (3) is provided with a step surface (3.3) which is in contact with the sealing ring (7) and corresponds to the sealing groove (10).

8. The electric machine of claim 7, wherein: the assembling method of the front cover and the rear cover comprises the steps that the front cover (2) is further provided with a connecting portion (11) in the assembling direction between the front cover (2) and the rear cover (3), the rear cover (3) is provided with a connecting hole (12) corresponding to the connecting portion (11), a mounting hole (11.1) is formed in the connecting portion (11), and a fastening piece is inserted between the mounting hole (11.1) and the connecting hole (12) in a penetrating mode, so that a fixed connection is formed between the front cover (2) and the rear cover (3) and the sealing ring (7) is clamped.

9. The electric machine of claim 8, wherein: be equipped with first spacing step (2.5) that are used for installing stator (1) in protecgulum (2), be equipped with second spacing step (3.4) that are used for installing stator (1) in back lid (3), stator (1) is spacing to be installed in the interval between first spacing step (2.5) and second spacing step (3.4).

10. An electric fan comprising a rear mesh enclosure (13), and the motor of claim 6, wherein: the front cover (2) is provided with a first front cover face (2.1) and a second front cover face (2.2), a boss (2.6) is arranged between the first front cover face (2.1) and the second front cover face (2.2), the boss (2.6) is provided with more than one limiting groove (2.4), an opening part (13.1) is arranged on the rear net cover (13) corresponding to the boss (2.6), a flanging (13.2) is arranged on the opening part (13.1), a positioning step (13.3) is arranged on the flanging (13.2) corresponding to the limiting groove (2.4), and the positioning step (13.3) is limited and installed on the limiting groove (2.4).