CN214196770U - Fan blower - Google Patents

Abstract

The fan includes: a motor having a shaft; a motor case and a bottom side case that form an outline of the motor, the motor case being located on the output shaft side, the bottom side case being located on the counter output shaft side; a circuit board mounted inside a motor case or the like and mounted with a circuit for driving the motor; a power supply line which is led out to the outside of the motor case or the like and supplies power to the circuit board; a lead tube which is positioned between the motor case and the like and the power supply line, and is combined with the power supply line; a blade attached to the shaft; a blower case having a blade built therein and molded with resin; and a rib disposed on the blower case so as to surround the lead tube from the output shaft side of the motor toward the counter output shaft side.

Description

Fan blower

Technical Field

The utility model relates to a power cord of motor that fan possessed. More particularly, the present invention relates to a blower provided with a structure in which a projection integrally formed in a blower case is provided to prevent water from dropping between power lines of a motor.

Background

Examples of fans mounted on vehicles and the like include a fan disclosed in patent document 1. That is, in order to prevent the circuit portion from being damaged by the water scattering due to the rotation of the fan when the water enters from the suction portion, a structure is adopted in which the water is prevented from entering the housing portion.

However, in the structure of the fan described in patent document 1, no countermeasure is taken against water droplets from the outside of the fan. In addition, the fan described in patent document 1 is also limited in the mounting posture of the motor. Further, since the motor case is formed of metal, when the shape of the fan is changed, the cost of the die is required to be modified, and the fan cannot be easily changed.

Documents of the prior art

Patent document

Patent document 1: japanese Kokai publication Hei-2-139473

SUMMERY OF THE UTILITY MODEL

The utility model provides an foretell problem. The utility model discloses a through set up the rib in the blower casing of resin molding to prevent with low price and easy structure from coming from outside water to instiling into the motor. That is, according to the present invention, it is possible to provide a non-waterproof fan that prevents water from entering from a power supply line.

In order to achieve the above object, the blower of the present invention includes a motor, a motor housing, a bottom housing, a circuit board, a power cord, a lead tube, a blade, a blower housing, and a rib.

The motor has a shaft with one side serving as an output shaft and the other side serving as an opposite output shaft. The motor has an outer contour formed by a motor housing and a bottom side housing, the motor housing being located on the output shaft side. The bottom side housing is located on the reverse output shaft side. The circuit board is mounted inside the motor case and the bottom case. The circuit board is mounted with a circuit for driving the motor. The power line is electrically connected to the circuit board. The power line is led out to the outside of the motor casing and the bottom side casing. The power supply line supplies power to the circuit board. The lead tube is located between the motor shell and the bottom side shell and the power line. The lead tube is held at least in any one of the motor case and the bottom side case and combined with the power supply line. The blades are mounted to the shaft. The blower casing is provided with blades and is molded from resin. The rib is disposed on the blower case so as to surround the lead pipe from the output shaft side of the motor toward the counter output shaft side.

The fan of the present invention has a structure in which a rib is provided to surround the motor. With this configuration, it is possible to provide a fan which can prevent water from entering from the vehicle, prevent water from dripping to the power supply line by fixing the step of the bellows to the rib, and has high productivity. In addition, it is possible to provide the blower in consideration of the mounting (routing) of the power supply line assembly wiring to the motor case.

According to the utility model discloses, can provide a fan of motor with built-in circuit substrate, wherein, waterproof countermeasure is excellent to the productivity is higher.

Drawings

Fig. 1 is a longitudinal section of a fan according to an embodiment of the present invention.

Fig. 2 is an enlarged view showing a main structure of the fan.

FIG. 3 is a perspective view of the lower surface side of the blower fan

Fig. 4 is a perspective view showing the arrangement of the motor and the assembly wiring used in the blower.

Detailed Description

Hereinafter, a fan according to an embodiment of the present invention will be described with reference to the drawings. The embodiments described below are all preferred specific examples of the present invention. Therefore, the numerical values, the components, the arrangement positions and connection forms of the components, and the steps and the order of the steps, which are described in the following embodiments, are examples, and the gist is not limited to the present invention. Thus, among the components of the following embodiments, those not described in the independent claims representing the uppermost concept of the present disclosure will be described as arbitrary components.

The drawings are schematic and are not necessarily strictly illustrative. In the drawings, substantially the same components are denoted by the same reference numerals, and redundant description is omitted or simplified.

(embodiment mode)

Fig. 1 is a longitudinal section of a fan 1 according to an embodiment of the present invention. The fan 1 is a centrifugal fan. In the present embodiment, a fan incorporating a motor will be described.

As shown in fig. 1, the fan 1 includes a motor 2, a blade 3, an upper case 4, a lower case 5, and an assembly wiring 7. The blower 1 holds the lead tube 9 by the motor case 6 having the step portion and the bottom side case 8.

The blade 3 is attached to a shaft 20 of the motor 2. One side of the shaft 20 is an output shaft 20a and the other side is an output shaft 20 b. When the shaft 20 rotates, the blades 3 also rotate together. The lower case 5 is in contact with a stepped portion of the motor case 6. The motor 2 is fixed to the lower case 5.

Fig. 2 is an enlarged view showing a main structure of the fan 1 according to the embodiment of the present invention. Fig. 3 is a perspective view of the lower surface side of the blower 1. Fig. 4 is a perspective view showing the arrangement of the motor 2 and the assembly wiring 7 used in the blower 1. The overall structure of the fan 1 will be described below with reference to fig. 1 to 4.

As shown in fig. 1 and 3, the fan 1 includes a motor 2, a blade 3, an upper case 4, a lower case 5, and an assembly wiring 7. The lower case 5 has a rib 5a on the outside. Here, the upper case 4 and the lower case 5 are collectively referred to as a blower case 22. The blower case 22 is molded from resin and incorporates the blade 3. The motor 2 is made of metal, and a lead tube 9 is held by a motor case 6 on the output shaft side and a bottom case 8 on the reverse output shaft side, which have a step portion forming the outer contour of the motor 2.

The outer periphery of the power supply line 7a is surrounded by a bellows 7 b. In the motor 2, the portion surrounded by the bellows 7b of the assembly wiring 7 is disposed so as to enter the inside of the rib 5a under the blower housing 22. The corrugated tube 7b is assembled such that the wave crests of the corrugated tube 7b are located inward of the ribs 5a of the lower case 5. That is, the ribs 5a are sandwiched by the adjacent crests of the corrugated tube 7 b. With this arrangement, water droplets can be prevented from being transferred from the upper case 4 by the ribs 5a of the lower case 5.

As shown in fig. 3, the rib 5a is disposed in the lower case 5 so as to surround a gap between the power supply line 7a and the bellows 7b of the assembly wiring 7 of the motor 2. The motor case 6 is designed in consideration of prevention of water from entering the fitting surface 2a and the like included in the motor case 6. Therefore, when the fan 1 is used in the arrangement as shown in fig. 1, water can be poured into the fan 1 for any reason, and water droplets can be discharged to the lower side of the fan 1 by the ribs 5a of the lower case 5 or the grooves of the bellows 7b at the lower portion in the gravity direction. This can prevent water from entering the motor 2. In the fan 1 of the present embodiment, in the installation posture of the fan 1 shown in fig. 1, the combination of the ribs 5a and the bellows 7b of the lower case can prevent water from entering the motor case 6.

As shown in fig. 1 and 4, the motor 2 has a circuit board 10 in the motor case 6 and the bottom case 8 via lead pipes 9. A gap is formed between the motor case 6 and the bottom case 8 and the lead pipe 9, and it is necessary to prevent water from entering from the outside. The combination of the ribs 5a and the bellows 7b of the lower case 5 can prevent water from entering between the motor case 6 and the bottom case 8 and the lead pipe 9. This makes it possible to provide a fan having an excellent effect of preventing water from entering the fan due to water droplets from the outer periphery of the casing and having high productivity. In addition, the ribs 5a of the lower case 5 are a structure formed of resin, and can easily change the shape. This makes it possible to provide a blower that can be easily mounted on various vehicles.

As described above, the fan 1 of the present embodiment includes the motor 2, the motor case 6, the bottom case 8, the circuit board 10, the power supply line 7a, the lead tube 9, the blade 3, the fan case 22, and the rib 5 a.

The motor 2 has a shaft 20 having one side as an output shaft 20a and the other side as a counter output shaft 20 b. The motor 2 has an outer contour formed by a motor case 6 and a bottom case 8, and the motor case 6 is located on the output shaft 20a side. The bottom side housing 8 is located on the reverse output shaft 20b side. The circuit board 10 is mounted inside the motor case 6 and the bottom case 8. The circuit board 10 is mounted with a circuit for driving the motor 2. The power supply line 7a is electrically connected to the circuit board 10. The power cord 7a is led out to the outside of the motor case 6 and the bottom side case 8. The power supply line 7a supplies power to the circuit board 10. The lead tube 9 is located between the motor case 6 and the bottom case 8 and the power supply line 7 a. The lead tube 9 is held at least in any one of the motor case 6 and the bottom side case 8 and combined with the power supply line 7 a. The blades 3 are mounted to the shaft 20. The blower case 22 houses the blade 3 and is molded from resin. The rib 5a is disposed on the blower case 22 so as to surround the lead tube 9 from the output shaft 20a side of the motor 2 toward the counter output shaft 20b side.

Thus, a fan of a motor having a built-in circuit board, which is excellent in waterproof measures and high in productivity, can be provided.

As described in the present embodiment, the rib 5a can be formed at least in a part of the blower case 22, specifically, in the vicinity of the portion from which the power cord 7a is drawn, and the above-described operational effects can be obtained.

Further, it is preferable that the outer periphery of the power supply line 7a is surrounded by the corrugated tube 7b, and the rib 5a is sandwiched between adjacent ones of the plurality of peaks formed in the corrugated tube 7 b.

The blower case 22 is formed of an upper case 4 located on the output shaft 20a side and a lower case 5 located on the counter output shaft 20b side. Preferably, the blower housing 22 has the motor 2 fixed to the lower case 5, and the ribs 5a are disposed on the lower case 5.

Industrial applicability

According to the utility model discloses a fan utilizes simple and convenient waterproof countermeasure, can provide the higher fan of waterproof nature. Therefore, the fan of the present invention is useful for a fan used for an on-vehicle blower fan or the like having a high effect of preventing water from entering by a water droplet measure.

Description of the reference numerals

1. A fan; 2. an electric motor; 2a, a fitting surface; 3. a blade; 4. an upper housing; 5. a lower housing; 5a, ribs; 6. a motor housing; 7. assembling a wiring; 7a, a power line; 7b, a corrugated pipe; 8. a bottom side housing; 9. a lead tube; 10. a circuit substrate; 20. a shaft; 20a, an output shaft; 20b, an output shaft; 22. blower housing.

Claims (3)

1. A fan is characterized in that a fan body is provided with a fan body,

this fan includes:

a motor having a shaft with one side serving as an output shaft and the other side serving as a counter output shaft;

a motor case and a bottom side case that form an outline of the motor, the motor case being located on the output shaft side, the bottom side case being located on the counter output shaft side;

a circuit board mounted inside the motor case and the bottom case, and having a circuit for driving the motor mounted thereon;

a power supply line electrically connected to the circuit board, drawn out to the outside of the motor case and the bottom side case, and supplying electric power to the circuit board;

a lead tube located between both the motor case and the bottom side case and the power supply line, held at least in any one of the motor case and the bottom side case, and combined with the power supply line;

a blade attached to the shaft;

a blower case having the blade built therein and molded with resin; and

a rib disposed on the blower case so as to surround the lead pipe from the output shaft side of the electric motor toward the counter output shaft side.

2. The fan of claim 1,

the outer circumference of the power supply line is surrounded by a corrugated tube formed with a plurality of wave crests,

the rib is sandwiched by adjacent peaks of the plurality of peaks.

3. The fan according to claim 1 or 2,

the blower case is formed of an upper case on the output shaft side and a lower case on the reverse output shaft side,

the motor is fixed to the lower case, and,

the ribs are disposed on the lower case.

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