Electric hair drier

Abstract

The utility model discloses an electric hair drier which comprises an electric hair drier body, a motor, a heating element, a detection assembly and a control device, the electric hair drier body comprises a handheld part and an air cylinder part, a flowing cavity is formed in the handheld part, the air cylinder part is provided with a hollow part and an air outlet cavity, and the air outlet cavity is communicated with the flowing cavity; the motor is mounted in the handheld part; the heating element is arranged on the electric hair drier body; the detection assembly comprises a sensor mounted in the hollow part; the control device is electrically connected with the motor, the heating element and the sensor. According to the utility model, the air outlet chamber is arranged outside the hollow part, the air outlet chamber is communicated with the flowing chamber, and the sensor is arranged in the hollow part, so that a negative pressure area can be formed in the hollow part when the air outlet chamber sprays high-speed and high-temperature airflow, and a large amount of surrounding air can be sucked into the hollow part to be converged with the high-speed and high-temperature airflow; and when a large amount of surrounding air passes through the hollow part, the sensor can be cooled, so that functional failure caused by high temperature of the sensor is avoided.

Description

Technical Field

[0001] The utility model relates to the field of hair dryers, in particular to an electric hair dryer. Background Art

[0002] Currently, hair dryers on the market are equipped with a distance measuring module at their air outlet. The distance between the hair dryer and the measured person is determined by the distance measuring module, thereby controlling the wind speed or temperature of the hair dryer. However, the distance measuring module is located at the air outlet of the hair dryer, occupying the space outside the hair dryer. When the hair dryer needs to dry the hair, the high-temperature gas blows directly into the distance measuring module, which affects the life of the distance measuring module. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes an electric hair dryer.

[0004] According to the first aspect of the present invention, the hair dryer includes a hair dryer body, a motor, a heating element, a detection component and a control device. The hair dryer body includes a handheld part and a wind tube part installed on the top of the handheld part, the handheld part has a flow chamber for air flow, the wind tube part has a hollow part running through the front and back and an air outlet chamber located outside the hollow part, and the air outlet chamber is connected to the flow chamber; the motor is installed in the handheld part; the heating element is installed on the hair dryer body, and is used to heat the gas blown out by the motor; the detection component includes a sensor installed in the hollow part; the control device is electrically connected to the motor, the heating element and the sensor respectively.

[0005] The hair dryer according to the embodiment of the present invention has at least the following technical effects: an air outlet chamber is provided outside the hollow part, the air outlet chamber is connected to the flow chamber, and the sensor is provided in the hollow part. When the air outlet chamber sprays out a high-speed and high-temperature airflow, a negative pressure area will be formed in the hollow part, thereby sucking a large amount of surrounding air into the hollow part and merging with the high-speed and high-temperature airflow. When the large amount of surrounding air passes through the hollow part, it can cool down the sensor, thereby avoiding high temperature of the sensor, and since the sensor is located in the hollow part, the sensor does not occupy space outside the hair dryer body.

[0006] According to some embodiments of the present invention, the sensor is located in the middle of the hollow portion.

[0007] According to some embodiments of the present invention, the detection assembly further includes a mounting bracket, one end of which is fixedly connected to the side wall of the hollow portion, and the sensor is disposed on the front side of the other end of the mounting bracket.

[0008] According to some embodiments of the present invention, the rear side of the other end of the mounting frame has a guide portion with conical side walls in the vertical direction and an arc-shaped rear end.

[0009] According to some embodiments of the present invention, a light guide capable of guiding light outside the mounting frame and a display light located inside the mounting frame are installed on the mounting frame. The display light is electrically connected to the control device, and at least part of the light of the display light is directed toward the rear of the mounting frame and toward the light guide.

[0010] According to some embodiments of the present invention, the control device is installed in the air outlet chamber, the mounting frame has an installation cavity connected to the air outlet chamber, and the display light and the sensor are both located in the installation cavity.

[0011] According to some embodiments of the present invention, the detection component also includes a fixing bracket, and the front and rear sides of the fixing bracket respectively have a first opening and a second opening to the mounting cavity; the fixing bracket is inserted into the mounting cavity through the first opening and is snap-connected to the side wall of the mounting cavity, and the sensor is installed on the fixing bracket; the light guide is inserted into the mounting cavity through the second opening and is snap-connected to the side wall of the mounting cavity, a part of the structure of the light guide is overlapped on the second opening, and the guide part is installed on the light guide.

[0012] According to some embodiments of the present invention, the heating element is installed in the air outlet chamber or in the handheld part.

[0013] According to some embodiments of the present invention, the control device includes a stepless speed and temperature control circuit board, and the stepless speed and temperature control circuit board is electrically connected to the motor, the heating element and the sensor respectively.

[0014] According to some embodiments of the present invention, a switch for turning on or off the sensor is provided on the rear side of the handheld portion, and the switch is electrically connected to the control device.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A cross-sectional view of a hair dryer according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 Schematic diagram of the structure of the mounting frame;

[0020] Figure 4 This is a schematic diagram of the rear structure of the hair dryer;

[0021] Figure 5 Exploded view of the display light, fixing bracket, mounting bracket, display light, light guide and air guide.

[0022] Figure numerals: hair dryer body 100, hand-held part 110, flow chamber 111, switch 112, air cylinder part 120, hollow part 121, air outlet chamber 122, motor 200, heating element 300, detection component 400, sensor 410, mounting bracket 420, mounting cavity 421, first opening 422, second opening 423, air guide part 430, light guide part 440, display light 450, fixing bracket 460, control device 500, stepless speed and temperature control circuit board 510. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated by up, down, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figure 1As shown, the hair dryer according to the embodiment of the present invention includes a hair dryer body 100, a motor 200, a heating element 300, a detection component 400 and a control device 500. The hair dryer body 100 includes a handheld part 110 and a wind tube part 120 installed on the top of the handheld part 110. The handheld part 110 has a flow chamber 111 for air flow. The wind tube part 120 has a hollow part 121 running through the front and back and an air outlet chamber 122 located outside the hollow part 121, and the air outlet chamber 122 is connected to the flow chamber 111; the motor 200 is installed in the handheld part 110; the heating element 300 is installed on the hair dryer body 100, and is used to heat the gas blown out by the motor 200; the detection component 400 includes a sensor 410 installed in the hollow part 121, and the sensor 410 is used to detect the distance between the human body and the sensor 410; the control device 500 is electrically connected to the motor 200, the heating element 300 and the sensor 410 respectively.

[0028] An air outlet chamber 122 is provided outside the hollow portion 121, and the air outlet chamber 122 is connected to the flow chamber 111. The sensor 410 is provided in the hollow portion 121. When the air outlet chamber 122 ejects a high-speed and high-temperature airflow, a negative pressure area is formed in the hollow portion 121, thereby sucking a large amount of surrounding air into the hollow portion 121 and merging with the high-speed and high-temperature airflow. When a large amount of surrounding air passes through the hollow portion 121, it can cool down the sensor 410, thereby avoiding high temperature of the sensor 410. Since the sensor 410 is located in the hollow portion 121, the sensor 410 does not occupy space outside the hair dryer body 100.

[0029] During operation, the motor 200 starts, and the gas outside the handheld part 110 enters the flow chamber 111. The gas passes through the flow chamber 111 and enters the air outlet chamber 122, and is then discharged to the outside of the air cylinder part 120 through the air outlet chamber 122. During the flow of the gas, the user can start the heating function or not. When the heating function is started, the heating element 300 heats the gas discharged from the motor 200.

[0030] When the hair dryer is idle (when there is no data change from the sensor 410 or the hair dryer is placed still), the heating element 300 is set to the off state, and the motor 200 is controlled to operate in the lowest power range. At this time, the hair dryer slowly blows out natural air at the lowest speed; this has the advantage of blowing out the residual heat of the heating element 300 in the early stage, thereby reducing the internal temperature of the hair dryer;

[0031] When blowing hair at close range, the heating element 300 outputs the lowest power, and the high-speed motor 200 is controlled to operate at a power higher than the lowest power. At this time, the hair dryer blows out gentle hot air at a low temperature and low wind speed;

[0032] When blowing hair at a long distance, the heating element 300 outputs the highest power, and the high-speed motor 200 is controlled to operate in the highest power range.

[0033] Specifically, the sensor 410 may be an infrared sensor; the motor 200 may be a brushless motor; and the detection direction of the sensor 410 is toward the human body or the front.

[0034] Specifically, the bottom of the handheld portion 110 has an air inlet connected to the flow chamber 111 , the air outlet chamber 122 is connected to the top of the flow chamber 111 , and the front side of the air cylinder portion 120 has an air outlet connected to the air outlet chamber 122 .

[0035] In some embodiments of the present invention, the sensor 410 is located in the middle position of the hollow portion 121 so that the sensor 410 can measure distance more accurately and the error rate is at a lower value; specifically, the front end face of the sensor 410 is parallel to the front end face of the wind cylinder portion 120 for better distance measurement.

[0036] In some embodiments of the present invention, Figure 1 、 2 As shown in Figure 3, the detection component 400 also includes a mounting bracket 420, one end of which is fixedly connected to the side wall of the hollow portion 121, and the sensor 410 is arranged on the front side of the other end of the mounting bracket 420. By arranging the mounting bracket 420 in the hollow portion 121, it is convenient to fix the sensor 410 in the hollow portion 121.

[0037] In a further embodiment of the present invention, Figure 1 、 2 As shown, the rear side of the other end of the mounting frame 420 has a guide portion 430 with conical side walls in the vertical direction and an arc-shaped rear end. The guide portion 430 adopts this shape to facilitate the surrounding air to flow through the hollow portion 121 more smoothly.

[0038] In a further embodiment of the present invention, Figure 2 As shown, a light guide 440 capable of guiding light out of the mounting frame 420 and a display light 450 located inside the mounting frame 420 are installed on the mounting frame 420. The display light 450 is electrically connected to the control device 500, and at least part of the light of the display light 450 is directed toward the rear of the mounting frame 420 and toward the light guide 440.

[0039] like Figure 2 、 4 As shown, through the display light 450 and the light guide 440, the user can know the color and brightness of the display light 450 from the back of the hair dryer, and then the user can judge the wind speed, heating temperature, and the distance between the human body and the hair dryer.

[0040] During operation, the light of the display lamp 450 is radiated toward the rear of the mounting bracket 420 through the light guide 440 .

[0041] Specifically, the closer the distance between the human body and the sensor 410, the weaker the light; the farther the distance, the stronger the light; at normal temperature, the light of the display light 450 is blue or green; at low temperature, the light is yellow; at medium temperature, the light is orange; at high temperature, the light is red.

[0042] In a further embodiment of the present invention, Figure 1 、 2 As shown, the control device 500 is installed in the air outlet chamber 122 , and the mounting frame 420 has a mounting cavity 421 communicating with the air outlet chamber 122 . The display light 450 and the sensor 410 are both located in the mounting cavity 421 .

[0043] The installation cavity 421 is in communication with the air outlet cavity 122 , so that the wires of the control device 500 can be more easily electrically connected to the display light 450 and the sensor 410 .

[0044] In a further embodiment of the present invention, Figure 2 、 3 5 , the detection assembly 400 further includes a fixing frame 460 , and the front and rear sides of the mounting frame 420 respectively have a first opening 422 and a second opening 423 connected to the mounting cavity 421 ;

[0045] The fixing bracket 460 is inserted into the mounting cavity 421 through the first opening 422 and is snap-connected to the side wall of the mounting cavity 421. The sensor 410 is mounted on the fixing bracket 460. Since the fixing bracket 460 with the sensor 410 mounted thereon is snap-connected to the side wall of the mounting cavity 421, the sensor 410 is more easily assembled and disassembled from the mounting bracket 420. Specifically, the fixing bracket 460 has a first snap-connecting hole, and the side wall of the mounting cavity 421 has a first snap-connecting block. The fixing bracket 460 is snap-connected to the first snap-connecting block on the side wall of the mounting cavity 421 through the first snap-connecting hole.

[0046] The light guide 440 is inserted into the mounting cavity 421 through the second opening 423 and is snap-connected to the side wall of the mounting cavity 421. Part of the structure of the light guide 440 is overlapped on the second opening 423, and the guide part 430 is installed on the light guide 440. The light of the display light 450 is illuminated outside the mounting frame 420 through the part of the structure of the light guide 440. Since the light guide 440 with the display light 450 is snap-connected to the side wall of the mounting cavity 421, the display light 450 is easier to install and remove from the mounting frame 420; specifically, the light guide 440 has a second snap-connecting hole, and the side wall of the mounting cavity 421 has a second snap-connecting block. The light guide 440 is snap-connected to the second snap-connecting block on the side wall of the mounting cavity 421 through the second snap-connecting hole.

[0047] In some embodiments of the present invention, Figure 1As shown, the heating element 300 is installed in the air outlet chamber 122 or in the handheld part 110; specifically, the heating element 300 and the control device 500 are both installed in the air outlet chamber 122, and the heating element 300 is located in front of the control device 500 to prevent the heated air from flowing through the control device 500, thereby improving the life of the control device 500.

[0048] In some embodiments of the present invention, Figure 1 As shown, the control device 500 includes a stepless speed and temperature control circuit board 510, which is electrically connected to the motor 200, the heating element 300 and the sensor 410 respectively. The stepless speed and temperature control circuit board 510 senses the distance signal through the sensor 410, and then sets the temperature and wind speed changes of multiple gears (for example: 20 gears) according to the distance, thereby realizing stepless adjustment of the speed of the motor 200 and the temperature of the heating element 300.

[0049] The sensor 410 detects the distance within 50CM of the hair dryer, and feeds back the sensor signal of the detected distance (1CM-50CM) to the stepless speed and temperature control circuit board 510 for analysis and interpretation; after interpretation, the stepless speed and temperature control circuit board 510 controls the power of the heating element 300 within a larger range, and also controls the power of the motor 200 within a larger range.

[0050] In some embodiments of the present invention, Figure 4 As shown, the back side of the handheld portion 110 has a switch 112 for turning the sensor 410 on or off. The switch 112 is electrically connected to the control device 500. The switch 112 allows the user to select or not select the distance measurement function. When the distance measurement function is not selected, the user can manually drive the hair dryer, which improves the user's selectivity and convenience and meets the user's needs for styling and blowing hair at various distances.

[0051] Throughout this specification, references to the terms "some embodiments" or "it is contemplated that" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0052] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A hair dryer, characterized in that: include: The hair dryer body comprises a handheld portion and a wind tube portion mounted on the top of the handheld portion, wherein the handheld portion has a flow chamber for air flow, and the wind tube portion has a hollow portion extending from front to back and an air outlet chamber located outside the hollow portion, wherein the air outlet chamber is connected to the flow chamber; a motor, installed in the handheld portion; a heating element, mounted on the hair dryer body, for heating the gas blown out by the motor; a detection assembly, comprising a sensor installed in the hollow portion; The control device is electrically connected to the motor, the heating element and the sensor respectively.

2. The hair dryer according to claim 1, characterized in that: The sensor is located in the middle of the hollow portion.

3. The hair dryer according to claim 1, characterized in that: The detection component further includes a mounting bracket, one end of which is fixedly connected to the side wall of the hollow portion, and the sensor is arranged on the front side of the other end of the mounting bracket.

4. The hair dryer according to claim 3, characterized in that: The rear side of the other end of the mounting frame is provided with a guide portion with a conical side wall in the up-down direction and an arc-shaped rear end.

5. The hair dryer according to claim 4, characterized in that: The mounting frame is provided with a light guide capable of guiding light out of the mounting frame and a display light located inside the mounting frame. The display light is electrically connected to the control device, and at least part of the light of the display light is directed toward the rear of the mounting frame and toward the light guide.

6. The hair dryer according to claim 5, characterized in that: The control device is installed in the air outlet chamber. The mounting frame has an installation cavity communicated with the air outlet chamber. The display light and the sensor are both located in the installation cavity.

7. The hair dryer according to claim 6, characterized in that: The detection component also includes a fixing bracket, and the front and rear sides of the fixing bracket respectively have a first opening and a second opening to the mounting cavity; the fixing bracket is inserted into the mounting cavity through the first opening and is connected to the side wall of the mounting cavity by snapping, and the sensor is installed on the fixing bracket; the light guide is inserted into the mounting cavity through the second opening and is connected to the side wall of the mounting cavity by snapping, a part of the structure of the light guide is overlapped on the second opening, and the guide part is installed on the light guide.

8. The hair dryer according to claim 1, characterized in that: The heating element is installed in the air outlet chamber or in the handheld part.

9. The hair dryer according to claim 1, characterized in that: The control device includes a stepless speed and temperature control circuit board, and the stepless speed and temperature control circuit board is electrically connected to the motor, the heating element and the sensor respectively.

10. The hair dryer according to claim 1, characterized in that: The rear side of the handheld portion is provided with a switch for turning on or off the sensor, and the switch is electrically connected to the control device.

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