JPH0342881B2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to a hair dryer.

(Background technology) Figure 1 shows a conventional hair dryer.
In the figures, A is a perspective view of the motor portion of the hair dryer, B is a sectional view mainly of the motor portion, and C is a sectional view of the hair dryer. In the A figure, 1 is the motor, 2 is the rectifier blade fixing frame, 3 is the rectifier blade, 4 is the hair wrapping prevention ring, and in the B figure is 1
2 is a motor, 2 is a straightening blade fixing frame, 4 is a ring for preventing hair wrapping, and 5 is a fan. This ring 4 for preventing hair wrapping is formed integrally with the straightening blade 3 and its fixing frame 2. Since this straightening blade fixing frame is not formed integrally with the case of the motor 1, it is difficult to maintain high dimensional accuracy of the gap A between the inner circumferential surface of the fan 5 and the outer circumferential surface of the hair wrapping prevention ring 4. It is. In the figure, 1 is the motor, 2 is the rectifier blade fixed frame, 3 is the rectifier blade, 5 is the fan, 6 is the housing, 7 is the heater, 8 is the filter provided at the air suction port, 9 is the suction ring and is indicated by the arrow indicates the flow of wind. 12 indicates a switch.

The rectifier blade 3 is fixed to the housing by the motor 1, the fixed rib 10, and the rectifier blade fixing groove 11 provided in the housing 6. The function of this rectifying blade is to rectify the wind sucked in by the fan 5 via the filter 8, and to
It is sent to Further, the rectifying blade is provided with a hair-wrapping prevention ring to prevent the motor shaft from locking if hair gets inside the dryer.

A drawback of the above structure is that although the straightening blade is provided with a ring 4 for preventing hair from wrapping around, the gap A between this ring for preventing hair from wrapping and the fan (see figure B) prevents hair from getting inside the motor shaft. It must be made as small as possible to prevent it from getting in, but since there is some looseness between the motor and the motor guide, this gap must be made to prevent the fan from hitting this ring during rotation. Difficult to make small.

(Object of the Invention) The present invention was proposed in order to improve the above-mentioned drawbacks, and by forming a hair-wrapping prevention ring integrally with the motor case, the ring can be positioned correctly at a predetermined position. The purpose is to ensure a predetermined clearance between the outer circumferential surface of the ring and the inner circumferential surface of the fan.

(Disclosure of the Invention) Next, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a sectional view of the hair dryer of the present invention, FIG. 3A is a perspective view of the motor portion, and FIG. 3B is a sectional view mainly of the motor portion.

In FIG. 3, 1 is a motor, 3 is a rectifying blade, 4 is a hair wrapping prevention ring, and 5 is a fan.

Therefore, the hair wrapping prevention ring 4 includes a cylindrical portion 4a integrally formed on the end face of the motor case in the axial direction of the motor 1, and an end portion of the cylindrical portion 4a provided in a direction perpendicular to the axial direction of the motor. flange portion 4b.

Further, the fan 5 is provided on the outer circumferential side of a nose-shaped cone portion 5a connected to the rotating shaft of the motor, and the inner circumferential surface 5b of the open end of the nose-shaped cone portion 5a is a flange portion of the ring 4 for preventing hair entanglement. It is configured to cover the outer periphery of 4b.

Further, it is preferable that the gap B between the inner circumferential surface of the open end of the nose-shaped cone portion of the fan and the outer circumferential surface of the fan portion 4b of the hair wrapping prevention ring be as small as possible.

FIG. 4 shows a motor used in the present invention, in which 20 is a shaft, 21 is a rotor, 22 is a coil provided on the rotor, and 23 is a motor used in the present invention.
is a commutator, 24 is metal for the bearing, 25 is a bearing stand, 26 is a brush, 27 is a terminal, 28 is a motor case, which is made of magnetic material (iron-based) to serve as a magnetic circuit.
It consists of 29 is the fixing rib, 30 is 2
A permanent magnet for the divided stator, 31 is a rectifier blade,
32 indicates a ring for preventing hair from getting entangled.

According to this configuration, the hair wrapping prevention ring 32 is formed integrally with the motor case. Therefore, the ring can be positioned correctly.

FIGS. 5A and 5B show other embodiments of the motor, and parts designated by the same reference numerals as in FIG. 4 indicate the same parts as in FIG. This configuration is characterized by the configuration of the motor case.
The case is made of plastic, and the rectifying blades 31 and the hair wrapping prevention ring 32 are integrally formed. Further, in this configuration, an iron-based ring 33 is used as the magnetic circuit, and this iron-based ring 33 is interposed between the permanent magnet 30 and the plastic case 28.

In this configuration, the iron-based ring and the permanent magnet are integrally formed by simultaneous molding inside a plastic case equipped with a rectifying blade and a hair-wrapping prevention ring.

According to this configuration, in addition to the effects of the one shown in FIG. 4, it is possible to provide a lightweight and inexpensive hair dryer.

(Effects of the Invention) As described above, according to the present invention, there is provided a cylindrical portion integrally formed on the end face of the motor case in the axial direction of the motor, and a cylindrical portion provided at the end of the cylindrical portion in a direction perpendicular to the motor axis. A ring for preventing hair from being entangled is disposed so as to cover the inner peripheral surface of the open end of the nose-shaped cone for attaching the fan connected to the rotating shaft of the motor. This has the effect of making it difficult for the metal to enter the motor shaft and preventing it from getting wrapped around the motor shaft.

[Brief explanation of drawings]

Fig. 1 is a conventional hair dryer, Fig. 2 is a sectional view of the hair dryer of the present invention, Fig. 3 is a motor section, Fig. 4 is an embodiment of the motor, and Fig. 5 is another embodiment of the motor. show. DESCRIPTION OF SYMBOLS 1... Motor, 2... Rectifier blade fixing frame, 3... Rectifier blade, 4... Hair wrapping prevention ring, 4a... Cylindrical part, 4b... Flange part, 5... Fan, 5a
...Nose-shaped cone portion, 5b...Inner peripheral surface, 6...
Housing, 7... Heater, 8... Filter,
9... Suction ring, 10... Fixed rib, 11...
Rectifier blade fixed groove, 12... switch, 20...
Shaft, 21... Rotor, 22... Coil, 23...
Commutator, 24... Metal for bearing, 25... Bearing stand, 26... Brush, 27... Terminal, 28... Motor case, 29... Rib, 30... Permanent magnet, 3
1... Rectifying blade, 32... Ring for preventing hair from getting caught.

Claims (1)

[Claims] 1. A hair dryer that includes a motor fixed in a housing, a fan connected by the motor, and a heater in the housing that heats the air sucked in by the rotation of the fan and blows it out. In the above, a hair-wrapping prevention ring is provided on the end face of the motor case, which has a cylindrical part integrally formed in the axial direction of the motor, and a flange part provided at the end of the cylindrical part in a direction perpendicular to the motor axis. A hair dryer, characterized in that the hair dryer is disposed so as to be covered by the inner circumferential surface of the open end of a nose-shaped cone for attaching a fan coupled to the rotating shaft of the motor.