CN108903200B - Electric hair drier - Google Patents

Abstract

The invention discloses an electric hair dryer, belongs to the technical field of blowing devices, and is designed for solving the problems of poor holding feeling, low wind speed and the like of the existing electric hair dryer. The electric hair dryer comprises a handle and an air duct which are communicated, wherein fan blades are arranged in the air duct, and a motor is arranged in the handle; the output shaft of the motor is arranged at an included angle with the rotating shaft of the fan blade, and the output shaft of the motor is in transmission connection with the fan blade through the direction conversion component. The motor of the electric hair dryer does not generate moment at the handle, so that the holding feeling is improved, and the electric hair dryer is labor-saving to use; the fan blade has high blowing speed and large air quantity, improves the blowing efficiency of the electric blower, and expands the application range of the electric blower.

Description

hair dryer

Technical field

The present invention relates to the technical field of hair dryers, and in particular to a hair dryer with a motor installed in a handle.

Background technique

A hair dryer is a commonly used household appliance that uses a motor to drive the fan blades to rotate to blow out hot air, which is used to dry hair and other wet objects.

The motor of the existing hair dryer is mostly installed in the hair dryer, and there is a certain distance between it and the handle. When the motor is working, it will produce vibration and torque on the handle, which makes the grip feel bad and difficult to use. Some hair dryers have the motor installed in the handle, but due to the limitations of the handle diameter and unreasonable structure, large fan blades cannot be installed, resulting in the inability to further increase the wind speed.

Contents of the invention

The object of the present invention is to provide a hair dryer with good grip and high wind speed.

To achieve this goal, the present invention adopts the following technical solutions:

An electric hair dryer includes a connected handle and a hairdryer, a fan blade is provided in the hairdryer, and a motor is provided in the handle; the output shaft of the motor is arranged at an angle with the rotation axis of the fan blade, And the output shaft of the motor and the fan blade are drivingly connected through a direction conversion component.

Wherein, the direction conversion component includes a meshing motor bevel gear and a fan blade bevel gear, the motor bevel gear is arranged at the output end of the motor, and the fan blade bevel gear is arranged on the fan blade.

Wherein, the direction conversion component includes a meshing worm gear and a worm, the worm gear is arranged on the fan blade, and the worm is arranged at the output end of the motor.

Wherein, the direction conversion component includes a motor universal joint and a fan blade universal joint connected through a cross connector, the motor universal joint is arranged at the output end of the motor, and the fan blade universal joint is arranged at on the fan blades.

Wherein, the fan blades are annular fan blades.

Further, a bearing is installed in the middle of the annular fan blade, and an inner cavity tube is installed in the middle of the bearing, which passes through the air duct. An air outlet channel is formed between the inner cavity tube and the air duct. .

Further, a windshield is provided in the inner cavity tube, and the windshield separates the inner cavity tube into an air inlet section and an air outlet section, and an air inlet hole is provided on the side wall of the air inlet section. The airflow enters the air outlet channel from the air inlet section port of the inner cavity tube through the air inlet hole.

Furthermore, the windshield is made of transparent material.

Wherein, an annular back baffle is connected between the air inlet side end of the air duct and the outer end of the air inlet section of the inner cavity tube, and the side walls of the air duct and the inlet end of the inner cavity tube The side walls of the air section and the back baffle are surrounded by a recessed structure with a C-shaped cross-section, and a PCB board is arranged in the recessed structure.

Wherein, the annular fan blade includes an inner ring body, an outer ring body sleeved outside the inner ring body, and blades disposed between the inner ring body and the outer ring body, and the direction conversion component arranged on the side of the inner ring body.

The motor of the hair dryer of the present invention is arranged in the handle, and uses the cooperation of two bevel gears or worm gears and other direction conversion components to drive the fan blades. The motor does not generate torque at the handle, which improves the grip and saves effort in use; the annular fan blades The fast blowing speed and large air volume improve the drying efficiency of the hair dryer and expand the applicable scope of the hair dryer.

Description of the drawings

Figure 1 is a schematic structural diagram of a hair dryer provided in Example 1 of the specific implementation of the present invention;

Figure 2 is a cross-sectional view of the hair dryer provided in Example 1 of the specific embodiment of the present invention along the central axis of the hair dryer;

Figure 3 is a schematic structural diagram of the hair dryer provided in Example 1 of the specific implementation of the present invention without the handle and hair dryer;

Figure 4 is a schematic structural diagram of an annular fan blade and a motor provided in Example 1 of the specific implementation of the present invention;

Figure 5 is a schematic structural diagram of an annular fan blade and a motor provided in Example 2 of the specific implementation of the present invention, in which a is the first combination structure and b is the second combination structure.

In the picture:

1. Handle; 2. Hairdryer; 3. Fan blades; 4. Motor; 5. Bearings; 6. Inner cavity tube; 7. Back baffle; 8. PCB board; 9. Heating wire; 21. Air outlet channel; 31. Fan blade bevel gear; 32. Inner ring body; 33. Outer ring body; 34. Blade; 35. Worm gear; 41. Motor bevel gear; 45. Worm; 61. Wind shield; 62. Air inlet.

Detailed ways

The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation modes.

Example 1:

This embodiment discloses a hair dryer. As shown in Figure 1, the hair dryer includes a handle 1 and a hairdryer 2 that are connected internally. An inner cavity tube 6 is set inside the hairdryer 2. The air inlet side end of the hairdryer 2 and the inlet end of the inner cavity tube 6 An annular back baffle 7 is connected between the outer ends of the air sections. An air inlet hole 62 is provided on the side wall of the inner cavity tube 6 close to the air inlet. The air flow passes through the air inlet and the air inlet hole 62 of the inner cavity tube 6 in sequence and then enters the hair dryer.

As shown in Figures 2 and 3, fan blades 3 and heating wires 9 are arranged in the hairdryer 2 along the blowing direction. The fan blade 3 is an annular fan blade with a bearing 5 in the middle, and the inner cavity tube 6 is installed in the The middle part of the bearing 5; the handle 1 is equipped with a motor 4. A motor bevel gear 41 is provided at the output end of the motor 4, and a fan blade bevel gear 31 meshing with the motor bevel gear 41 is provided on the fan blade 3. The axis of the motor bevel gear 41 is perpendicular to the axis of the fan blade bevel gear 31. Or at a certain angle. The motor drives the motor bevel gear 41 to rotate around the axis, and the motor bevel gear 41 drives the fan blade bevel gear 31 to rotate around its own axis, thereby driving the fan blade 3 to rotate, generating blowing air, which blows from the outlet between the inner cavity tube 6 and the hairdryer 2 The wind channel 21 blows out.

In this embodiment, the motor 4 is installed in the handle 1. The motor 4 no longer generates torque at the handle 1. When grasping the handle 1, it feels better and saves effort, and the blowing direction is easy to control. A pair of motors are passed between the motor 4 and the fan blades 3. The meshing bevel gear connection changes the direction of movement, allowing the motor 4 in the handle 1 to drive the fan blade 3 in the hairdryer 2. The structure is reasonable and compact; the annular fan blade has strong blowing ability, large air volume and high wind speed, thereby improving The power efficiency of the hair dryer.

In order to make the blowing gas flow more smoothly, the air inlet hole 62 is located on the upwind side of the fan blade 3. The solid line with an arrow in Figure 2 shows the flow path of the blowing gas.

The side walls of the air duct 2, the side walls of the air inlet section of the inner cavity tube 6 and the back baffle 7 are surrounded by a recessed structure with a C-shaped cross section. A PCB (Printed Circuit Board) 8 (PCB, Printed Circuit Board) is provided in the recessed structure. plate). The dotted line with an arrow in Figure 2 shows the flow path of part of the gas after the inlet air hits the inner wall of the air duct 2 at the air inlet hole 62. This part of the gas rushes into the recessed structure, blows through the PCB board 8, and collides with the inside of the recessed structure. Then it returns to the air inlet 62 and is mixed into the subsequent intake air. When the airflow blows through the PCB board 8, it can take away the heat on the PCB board 8, thereby cooling the PCB board 8.

In view of the fact that it is difficult to make all the incoming air enter the air outlet channel 21 only by the arrangement of the air inlet hole 62, the hair dryer in this embodiment is vertically provided with a windshield 61 in the inner cavity tube 6. The side of the windshield 61 The edges completely fit on the inner wall of the inner cavity tube 6, thereby dividing the inner cavity tube 6 into two parts: an air inlet section and an air outlet section. The air inlet hole 62 is opened on the side wall of the air inlet section, and the area of the air inlet hole 62 can be increased as much as possible without cutting off the inner cavity tube 6 . The airflow can enter the air outlet channel 21 from the outer port of the air inlet section of the inner cavity tube 6 through the air inlet hole 62, and no air flow will directly rush from the inner cavity tube 6 to the port of the air outlet channel 21.

The specific shape and material of the windshield 61 are not limited, as long as it can achieve the function of blocking the wind. Preferably, the windshield 61 is made of transparent material, creating the feeling that the central axis of the hair dryer is completely open, with beautiful appearance and strong sense of technology.

In order to reduce the force exerted by the motor bevel gear 41 on the output shaft of the motor 4 as much as possible, the motor 4 is arranged at the upper part of the inside of the handle 1, thereby shortening the length of the output shaft of the motor 4 and reducing the phase difference between the motor bevel gear 41 and the fan blade bevel gear 31. The reaction force during meshing is the torque at the root of the output shaft of motor 4.

As shown in Figure 4, the annular fan blade includes a nested inner ring body 32 and an outer ring body 33. A plurality of blades 34 are arranged obliquely between the inner ring body 32 and the outer ring body 33. Between two adjacent blades 34 There is a certain distance between them, and the airflow passes between two adjacent blades 34 . The fan bevel gear 31 can be disposed on the side of the inner ring body 32 or the side of the outer ring 33. Preferably, the fan bevel gear 31 is disposed on the side of the inner ring 32, making the whole machine smaller in size.

Example 2:

This embodiment discloses a hair dryer, the structure of which is basically the same as that of Embodiment 1. The difference is that, as shown in Figure 5, a worm 45 is provided at the output end of the motor 4, and a worm gear 35 meshing with the worm 45 is provided on the fan blade 3. The axis of the worm is perpendicular to or at a certain angle from the axis of the worm gear. angle. The motor 4 drives the worm 45 to rotate around the vertical axis, and the worm 45 drives the worm wheel 35 to rotate around the horizontal axis, thereby achieving the same motion effect of driving the fan blade 3 to rotate as in the first embodiment.

The teeth of the worm gear 35 can be arranged on the outer wall (as shown in Figure 5a) or the side wall (as shown in Figure 5b) of the fan blade 3, without affecting the meshing with the worm, and only the installation position of the worm 45 needs to be changed accordingly. That’s it.

Embodiment three:

This embodiment discloses a hair dryer, the structure of which is basically the same as that of Embodiment 1. The difference is that the direction conversion component includes a motor universal joint and a fan blade universal joint connected by an inclined cross connector. The motor universal joint is arranged at the output end of the motor, and the fan blade universal joint is arranged at the fan blade. on the axis of rotation.

The output end of the motor rotates around a vertical line, which in turn drives the motor's universal joint to rotate in the same direction; the motor's universal joint drives the fan blade's universal joint to rotate around a horizontal line or an axis close to the horizontal through the cross connector, thereby driving the fan blade around a horizontal line. Or rotate close to the axis in the horizontal direction, thereby achieving the same motion effect of driving the fan blades to rotate as in Embodiment 1.

Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the present invention The scope is determined by the scope of the appended claims.

Claims (6)

1. An electric hair drier comprises a handle (1) and a wind barrel (2) which are communicated, wherein fan blades (3) are arranged in the wind barrel (2), and the electric hair drier is characterized in that a motor (4) is arranged in the handle (1); the output shaft of the motor (4) and the rotating shaft of the fan blade (3) are arranged at an included angle, and the output shaft of the motor (4) is in transmission connection with the fan blade (3) through a direction conversion component;

the fan blades (3) are annular fan blades;

a bearing (5) is arranged in the middle of the annular fan blade in a penetrating way, an inner cavity pipe (6) penetrating through the air duct (2) is arranged in the middle of the bearing (5), and an air outlet channel (21) is formed between the inner cavity pipe (6) and the air duct (2);

a wind shield (61) is arranged in the inner cavity pipe (6), the wind shield (61) divides the inner cavity pipe (6) into an air inlet section and an air outlet section, an air inlet hole (62) is formed in the side wall of the air inlet section, and air flow enters the air outlet channel (21) from an air inlet section port of the inner cavity pipe (6) after passing through the air inlet hole (62);

the annular fan blade comprises an inner ring body (32), an outer ring body (33) sleeved on the outer side of the inner ring body (32), and blades (34) arranged between the inner ring body (32) and the outer ring body (33), and the direction conversion component is arranged on the side face of the inner ring body (32).

2. An electric hair dryer according to claim 1, characterized in that the direction conversion means comprise a motor bevel gear (41) and a blade bevel gear (31) which are meshed, the motor bevel gear (41) being arranged at the output of the motor (4), the blade bevel gear (31) being arranged on the blade (3).

3. An electric hair dryer according to claim 1, characterized in that the direction conversion means comprise a worm wheel (35) and a worm (45) which are meshed, the worm wheel (35) being arranged on the fan blade (3), the worm (45) being arranged at the output of the motor (4).

4. An electric hair dryer according to claim 1, characterized in that the direction conversion means comprise a motor gimbal and a fan-blade gimbal connected by a cross connection, the motor gimbal being arranged at the output of the motor (4), the fan-blade gimbal being arranged on the fan-blade (3).

5. An electric hair dryer according to claim 1, characterized in that said wind shield (61) is made of transparent material.

6. The electric hair dryer according to claim 1, characterized in that an annular rear baffle (7) is connected between the air inlet side end part of the air duct (2) and the air inlet section outer end part of the inner cavity pipe (6), the side wall of the air duct (2), the air inlet section side wall of the inner cavity pipe (6) and the rear baffle (7) are enclosed into a concave structure with a C-shaped section, and a PCB (8) is arranged in the concave structure.