CN216518719U

CN216518719U - Axial fan

Info

Publication number: CN216518719U
Application number: CN202123015753.4U
Authority: CN
Inventors: 陈锦威
Original assignee: Nidec Dongguan Co ltd
Current assignee: Nideco Electric Dongguan Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-13
Anticipated expiration: 2031-12-03

Abstract

The utility model relates to the technical field of fans, and provides an axial-flow fan, which comprises: a casing having a cylindrical wall portion surrounding the fan impeller and a casing bottom portion located at one axial end of the cylindrical wall portion; a motor disposed at the bottom of the housing; the motor has a stator portion and a rotor portion; an impeller connected to a rotor portion of the motor; the housing bottom having a groove extending from the stator portion to the cylindrical wall portion; the groove is used for arranging a lead wire led out from the stator part. The wire inlet of the groove is of a trapezoidal structure. And the two sides of the wire inlet of the groove are provided with protruding parts, and the distance between the protruding parts at the two sides is smaller than the sum of the diameters of the wires. And a limiting part is arranged at the wire outlet of the groove. The fan can prevent the lead from escaping, protect the lead and improve the structural stability of the fan.

Description

Axial fan

Technical Field

The utility model relates to the technical field of fans, in particular to an axial-flow fan.

Background

The fan is generally used for heat dissipation, and is widely applied to various electric appliances in daily work and life, such as refrigerators, washing machines, air conditioners, clocks, and the like.

The fan is provided with a circuit board for electrifying the fan, and leads are led out from the circuit board, in the existing fan structure, the leads are directly led out from the circuit board, a placing structure of the leads from a base plate to a wire outlet is not provided, the leads are not restricted, so that the leads can be retracted inwards in the direction of the blades or expanded outwards of the nameplate, the retracted inwards in the direction of the blades can interfere with the blades in operation, and the expanded outwards of the nameplate can cause the leads to be pulled; the wire bunch port of the wire is large and has no blocking structure, so that the wire is easy to escape, and hidden troubles such as wire breakage are increased.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the problems that the lead of the fan in the prior art is directly led out from the circuit board, and the lead can shrink inwards towards the surface of the blade and interfere with the blade in operation; the technical problems that the wire is easy to escape, the wire breaking risk is increased and the like are solved, and the axial-flow fan is provided to prevent the wire from escaping, protect the wire and increase the structural stability of the fan.

The present invention provides an axial flow fan, comprising:

a casing having a cylindrical wall portion surrounding the fan impeller and a casing bottom portion located at one axial end of the cylindrical wall portion;

the motor is arranged at the bottom of the machine shell; the motor has a stator portion and a rotor portion;

an impeller connected to a rotor portion of the motor;

the housing bottom has a groove extending from the stator portion to the cylindrical wall portion;

the groove is used for arranging a lead wire led out from the stator part.

Preferably, the wire inlet of the groove is in a trapezoidal structure.

Preferably, two sides of the wire inlet of the groove are provided with protrusions, and the distance between the protrusions at two sides is smaller than the sum of the diameters of the wires.

Preferably, the wire outlet of the groove is provided with a limiting part.

Preferably, the limiting part is located in the radial direction of the groove.

Preferably, the lead is led out from the limiting part to the reverse direction of the groove.

Preferably, the limiting part is close to the corner of the bottom of the casing.

Preferably, the limiting part is provided with an opening, and the width of the opening is smaller than the diameter of the single wire.

According to the axial-flow fan provided by the utility model, the angles and the sizes of the ribs are adjusted, and one of the ribs is changed into the groove for placing the lead; the arrangement of the groove facilitates the configuration of the lead, and prevents the lead from bulging into the motor and interfering with the impeller. The wire inlet of the groove is of a trapezoidal structure, so that the wire is easily led out, and the wire can be positioned. The protruding parts are arranged on two sides of the wire inlet of the groove and can prevent the wires in the groove from overflowing. The fan can prevent the lead from escaping, protect the lead and improve the structural stability of the fan.

Drawings

Fig. 1 is a schematic structural view of an axial flow fan provided in the present invention;

fig. 2 is a perspective view of an axial flow fan provided by the present invention;

fig. 3 is a schematic structural view of the limiting portion and the opening portion provided by the present invention.

Reference numerals: 1. a housing; 2. an impeller; 3. a wire; 101. a cylindrical wall portion; 102. the bottom of the machine shell; 103. A groove; 104. a protrusion portion; 105. a limiting part.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.

As shown in fig. 1 to 2, an axial flow fan according to an embodiment of the present invention includes: a housing 1, a motor and an impeller 2.

The casing 1 has a cylindrical wall 101 surrounding the fan impeller and a casing bottom 102 located at one axial end of the cylindrical wall 101. A motor disposed at the bottom 102 of the housing; the motor has a stator portion and a rotor portion; and an impeller 2 connected to a rotor portion of the motor.

The housing bottom 102 has a groove 103 extending from the stator part to the cylindrical wall 101; the grooves 103 are used to house the wires 3 leading from the stator portion. The lead wires 3 are led out from the circuit board of the stator portion.

The groove 103 is arranged, so that the configuration of the lead 3 is convenient, and the lead 3 is prevented from bulging into the motor and interfering with the impeller 2.

Specifically, the wire inlet of the groove 103 adopts a trapezoidal structure, so that the wire 3 is easily led out, and the wire 3 can be positioned. The two sides of the wire inlet of the groove 103 are provided with the protruding parts 104, and the distance between the protruding parts 104 at the two sides is smaller than the sum of the diameters of the wires 3, so that the wires 3 in the groove 103 can be prevented from overflowing.

As shown in fig. 3, the outlet of the groove 103 is provided with a stopper 105, which can prevent the positioned lead 3 from overflowing. The limiting part 105 is located in the radial direction of the groove 103, and has a good limiting effect. The stopper portion 105 has an opening whose width is smaller than the diameter of the single wire 3. The lead 3 is led out from the stopper 105 in the direction opposite to the groove 103. In the fan of the present embodiment, the wire outlet of the groove 103 increases the wire entering/escaping stroke, and the wire 3 is constrained to move down the center of gravity, and the limiting portion 105 is added above the wire outlet to prevent the wire from escaping.

The limiting part 105 is close to the corner of the bottom part 102 of the casing, so that the fixing is convenient. In addition, the top of the casing corresponding to the bottom 102 of the casing is also provided with a lead outlet and a limiting part 105, so that the limiting effect on the lead 3 is good.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An axial flow fan comprising:

a casing (1) having a cylindrical wall portion (101) surrounding a fan impeller and a casing bottom portion (102) located at one axial end of the cylindrical wall portion (101);

a motor disposed at the bottom of the housing (102); the motor has a stator portion and a rotor portion;

an impeller (2) connected to a rotor portion of the motor;

the method is characterized in that:

the housing bottom (102) having a groove (103) extending from the stator portion to the cylindrical wall (101);

the groove (103) is used for arranging a lead wire (3) led out from the stator part.

2. The axial fan according to claim 1, characterised in that the inlet of the groove (103) is of trapezoidal configuration.

3. The axial fan according to claim 1, wherein the groove (103) is provided with protrusions (104) at both sides of the inlet, and the distance between the protrusions (104) at both sides is smaller than the sum of the diameters of the wires (3).

4. The axial fan according to claim 1 or 3, characterised in that the outlet of the groove (103) is provided with a stop (105).

5. The axial fan according to claim 4, characterised in that the limiting portion (105) is located radially of the groove (103).

6. The axial fan according to claim 4, characterised in that the conductor (3) is led out in the direction opposite to the recess (103) from the stop (105).

7. The axial fan according to claim 4, wherein the limiting portion (105) is close to a corner of the casing bottom (102).

8. The axial fan according to claim 4, characterised in that the limiting portion (105) has an opening whose width is smaller than the diameter of a single wire (3).