CN1625997A - hairbrush device - Google Patents

Abstract

A hairbrush device comprises a housing, a motor in the housing, a brush extending out of the housing, and a transmission device for transmitting the output torque of the motor to the brush. The sliding structure and the transmission device are connected together. When the brush stops rotating during use, for example, when long hair is entangled on the brush, the motor is allowed to rotate.

Description

hairbrush device

technical field

The present invention relates to curling brushes, and more particularly, although not by way of limitation, to an electric curling brush having a motor-driven roller The clutch used to prevent the above-mentioned hair roller from continuing to rotate

Background technique

Curling brushes include a roller with bristles through which heated air is blown through a number of holes onto the user's hair wrapped around the roller and passing between the bristles. When placing the hair roller with bristles on the hair in such a way that the hair strands pass between the bristles, the user holds the handle protruding longitudinally from the hair roller and manually turns the handle to wind the hair around the hair roller. A fan blows air through the heater, through the roller, and onto the hair through the holes located between the bristles.

The problem with this known curling brush is that it is necessary to manually turn the handle and thus the roller, and the user can only turn the handle within a limited angle without re-grip the handle and turn it again.

A curling brush with a motor-driven roller would overcome the above-mentioned problems, but the user's hair might get tangled on the roller during use, which would create another problem—hair pulling and possible damage.

Contents of the invention

It is an object of the present invention to overcome or substantially ameliorate at least one of the aforementioned disadvantages and/or more primarily to provide an improved hair curling brush having a motor-driven hair roller and a safety valve placed between the motor and the hair roller. clutch.

A curling brush device is disclosed here, comprising:

shell;

Motors placed in enclosures;

brush protruding from the housing;

a transmission that transmits the output torque of the motor to the brushes; and

A sliding mechanism coupled to the conveyor allows the motor to rotate when the brushes have stopped rotating in use.

Preferably, the curling brush described above further comprises a heater and a fan blowing air through the heater and onto the roller.

Preferably, the above-mentioned transmission device comprises a gearbox.

Preferably, the above-mentioned sliding mechanism includes a clutch coupled with gears in the gearbox.

Preferably, the above-mentioned clutch includes several mutually meshing special-shaped teeth.

Preferably, said means further comprises a spring biasing said profiled teeth into engagement with each other, the force exerted by said spring on the clutch defining a preset torque transmission limit of the gearbox.

Preferably, said clutch is integrated with a gear in the gearbox.

Description of drawings

Preferred embodiments of the invention will now be described with reference to the examples shown in the accompanying drawings, in which:

Fig. 1 is a simple transverse sectional front view of a curling brush device;

Figure 2 is a partially exploded perspective view of the gearbox of the curling brush device;

Figure 3 is a partially exploded perspective view of the above device;

Figure 4 is a simplified perspective view of the gearbox and motor;

Fig. 5 is a simplified cross-sectional front view of the gearbox and motor in Fig. 4 .

Detailed ways

In the drawings there is diagrammatically shown a curling brush device 10 comprising a housing with a handle portion 12 by which the device is held in use. Extending from the front end of the device 10 is a hair roller or brush 11 with bristles through which heated air is blown through the surface apertures as described above.

Immediately behind the brush 11 is a sleeve 39 behind which the roller transport 19 is located. As shown in FIG. 2, the above-mentioned hair roller transfer device 19 is in the shape of a cylinder with gear teeth around most of its rear edge. The heater shield 40 projects into the roller transport 19 and houses a heater 42 with a plurality of radially projecting heating fins as shown in FIG. 3 .

The fan motor 44 is installed in the fan motor fixed frame 45 close to the rear portion of the heater 42, sucks air by the grid 48 positioned at the back of the movable end cover 49, and a filter screen 50 and a filter screen are installed on the end cover 49 51. A small capacitor 43 is coupled to the fan motor 44 and/or heater 42 .

The housing comprises a pair of half-shells 52 and 53 molded of plastics material, between which the above-mentioned components are mounted.

In the trigger position of the housing there is a brush rotation control button set 20 and a number of buttons 15 for adjusting the speed of the fan motor 44 and the heater 42 . There is a cold blow (cold shot) button 17 on the trigger position of the shell, when it is pressed, then cut off the power supply leading to the heater 42.

There is a power cord tube 13 and a suspension ring 14 at the bottom of the handle 12 , and the power cord 54 passes through the power cord tube 13 . A cable 55 and a socket 56 are used for the aforementioned power cord 54 .

The transmission 16 is located and supported between a pair of half shells 52 and 53, which include a transmission housing upper portion 33 and a transmission housing lower portion 22, each of which is cast from metal or molded from plastic. The motor 23 drives a gearbox which in turn drives the roller conveyor 19 to rotate the brush 11 .

The motor 23 is provided with an output shaft passing through the lower part 22 of the gearbox housing to accommodate the pinion 24 . The pinion gear 24 drives the larger diameter teeth of the intermediate gear 38 . The smaller diameter teeth of the intermediate gear drive the clutch gear 25 . The clutch gear 25 is slidably mounted on a shaft 27 with a retainer 28 at the bottom end of the shaft 27 which fits over a projection 29 on the lower part 22 of the gearbox housing. A coil spring 26 surrounds a shaft 27 and presses the clutch gear 25 upward. It should be noted that the thickness of the clutch gear 25 is smaller than that of the pinion gear 24, so that when the clutch gear moves up and down along the shaft 27, the pinion gear and the clutch gear can continuously mesh. The clutch gear has many special-shaped clutch teeth 31 integrally formed therewith. The clutch teeth press against the profiled clutch teeth on the underside of the crown gear 30 and mesh with the corresponding clutch teeth. The ring gear rotates on shaft 27 and intermeshes with a pinion 34 . A pinion 34 is mounted on a shaft 35 on the opposite end of which is another pinion 36 mounted. The pinion 36 intermeshes with the roller transport 19 .

In normal use of the device, the contact between the spring 26 and the profiled teeth 31 is maintained, when the user's hair gets wrapped around the brush 11, a reverse torque will be generated in the gearbox so that the spring 26 will not be able to maintain the contact between the profiled teeth. meshing between. That is to say, when the clutch gear 25 continues to rotate under the action of the motor 23, the special-shaped teeth will overlap each other. This will produce an audible and/or tactile feedback to the user so she can release her finger from the brush's rotary control button.

It should be appreciated that modifications and variations obvious to those skilled in the art should not be considered as going beyond the scope of the present invention. For example, a plate clutch can be used instead of a clutch with profiled teeth. Alternatively, instead of a clutch, a pair of pulleys can be used, with a belt projecting from the periphery of the pulleys, said belt sliding along one or both of the pulleys when the brush becomes jammed.

Claims (7)

1. A hairbrush device comprising: shell; motor located in the housing; brush protruding from the housing; a transmission that transmits the output torque of the motor to the brushes; and A sliding mechanism coupled to the conveyor allows the motor to rotate when the roller is stopped in use. 2. The device of claim 1, further comprising a heater and a fan for blowing air through the heater to the roller. 3. The apparatus of claim 1, wherein said conveying means comprises a gearbox. 4. The device according to claim 3, wherein said sliding mechanism comprises a clutch coupled with a gear in a gearbox. 5. The device of claim 3, wherein said clutch comprises a plurality of intermeshing profiled teeth. 6. The device according to claim 5, further comprising a spring biasing said profiled teeth to engage each other, the force exerted on the clutch by said spring defines the preset value of the gearbox. torque transfer limit. 7. The apparatus of claim 4, wherein said clutch is integral with a gear in the gearbox.