CN215737372U - Switch and have its hairdryer - Google Patents
Switch and have its hairdryer Download PDFInfo
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- CN215737372U CN215737372U CN202121728102.7U CN202121728102U CN215737372U CN 215737372 U CN215737372 U CN 215737372U CN 202121728102 U CN202121728102 U CN 202121728102U CN 215737372 U CN215737372 U CN 215737372U
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- hair dryer
- electric hair
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- 230000001939 inductive effect Effects 0.000 claims abstract description 42
- 230000006698 induction Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a switch and an electric hair drier with the same, wherein the switch is used for the electric hair drier and comprises a main body and a handle, and a main control circuit board is installed in the handle; when the mechanical press switch is not pressed and/or the induction switch does not sense that the handle is held, the main control circuit board can control the electric hair drier to stop working. The electric hair drier has the advantages that the double protection circuits capable of being automatically started and stopped can be formed by arranging the mechanical press switch and the inductive switch, the electric hair drier is ensured to be in a closed state under the conditions of no person, mistaken touch or button failure and the like, the electric hair drier is prevented from continuously working, and potential safety hazards are reduced.
Description
Technical Field
The utility model relates to the technical field of small household appliances, in particular to a switch and an electric hair drier with the same.
Background
The existing hair dryers in the market all rely on the switch to operate the opening and closing of the hair dryer, if the condition of forgetting to close the switch occurs in the using process of the hair dryer, the hair dryer can continuously work under the unmanned condition or the hair dryer can continuously work due to button failure, potential safety hazards can be caused, even if the induction switch technology is adopted, only one layer of protection is provided, and the induction switch is easy to make mistakes due to electronic control.
Patent application with publication number CN202407587U discloses a touch control hair dryer, which comprises a touch control switch arranged on a handle, wherein the hair dryer is controlled by the touch control of fingers, when a user touches a touch area on the touch control switch, the touch area is conducted after sensing a human body signal, a drive control circuit starts a motor and a wind wheel, and when the fingers leave the touch area, the circuit is cut off, and the hair dryer stops working. The touch switch is easy to operate by mistake, so that potential safety hazards are caused.
SUMMERY OF THE UTILITY MODEL
In view of the above problems in the prior art, an object of the present invention is to provide a switch and a hair dryer having the same, which can automatically start and stop the hair dryer, protect the switch, and reduce the potential safety hazard caused by the hair dryer continuing to operate due to forgetting to turn off the hair dryer when a person leaves.
In order to achieve the above object, an embodiment of the present invention provides a switch for an electric hair dryer, where the electric hair dryer includes a main body and a handle, a main control circuit board is installed in the handle, the switch includes a mechanical push switch and an inductive switch, the mechanical push switch and the inductive switch are respectively connected to the main control circuit board, and after the mechanical push switch is pushed, the main control circuit board can control the electric hair dryer to start; when the mechanical press switch is not pressed and/or the induction switch does not sense that the handle is held, the main control circuit board can control the electric hair drier to stop working.
According to the switch provided by the embodiment of the utility model, the mechanical press switch and the inductive switch are arranged on the handle of the electric hair drier, and the working circuit of the electric hair drier is switched on after the mechanical press switch is pressed, so that the electric hair drier is controlled to start to work; when the mechanical press switch is not pressed and/or the inductive switch does not sense that the handle is held, the working circuit is disconnected, and the electric hair drier is controlled to stop working; the mechanical push switch and the inductive switch can form a double-protection circuit which is automatically started and stopped, so that the electric hair drier is ensured to be in a closed state under the conditions of no people, mistaken touch, button failure and the like, the electric hair drier is prevented from continuously working, and potential safety hazards are reduced.
In some embodiments, the mechanical press switch comprises a pressure sheet and a press contact column, the press contact column is fixed on the handle, one end of the pressure sheet is fixed on the handle through a fastener, and the other end of the pressure sheet is a free end and is used for being connected with or disconnected from the press contact column, so that a working circuit of the hair dryer is switched on or switched off, the structure is reasonable, and the on-off of the working circuit can be effectively realized.
In some embodiments, the pressure plate is an elastic pressure sensor, the size of the output resistor of the pressure plate is reduced along with the increase of the pressure applied to the surface of the pressure plate, and the main control circuit board can control the wind speed or the temperature of the electric hair drier according to the size of the pressure, so that the electric hair drier is convenient to adjust, can meet different use requirements of users, and improves the performance of the electric hair drier.
In some embodiments, the mechanical push switch further comprises a push cap mounted to an outer side of the pressure pad to protect the pressure pad and the push contact post.
In some embodiments, the pressing cover is made of a flexible material, and the pressing cover is attached to the handle, so that pressing is facilitated, and pressing sensitivity can be improved.
In some embodiments, the inductive switch is a pressure inductive switch, a capacitance inductive switch or a differential pressure inductive switch, so that the induction is sensitive, and the application range of the hair dryer can be widened.
In some embodiments, the handle is provided with mounting positions for mounting the mechanical push switch and the inductive switch, and a special mounting position is provided for facilitating pushing and sensing.
In some embodiments, the handle comprises a front cover and a rear cover which are connected with each other, the mechanical press switch and the inductive switch are arranged on one of the front cover or the rear cover, and the other of the front cover or the rear cover is provided with a key switch, so that the operation is convenient and the confusion is not easy.
The embodiment of the utility model also provides the electric hair drier which is provided with the switch.
In some embodiments, the electric hair drier comprises a main body and a handle, wherein an air inlet is formed in the handle, an air outlet is formed in the main body, an air inlet fixing piece is arranged at a position, close to the air outlet, in the main body, one end of the air inlet fixing piece is connected with the air outlet, and a heating wire frame is installed at the other end of the air inlet fixing piece, so that heat required by air blowing is provided for the electric hair drier, the air outlet quantity of the electric hair drier can be increased, and the air blowing effect is improved.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the embodiments of the utility model. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.
FIG. 1 is a schematic structural diagram of a hair dryer (including a switch) according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the hair dryer of the embodiment of the utility model in another direction;
fig. 3 is a sectional view of the hair dryer of the embodiment of the present invention;
FIG. 4 is an enlarged schematic view of a portion circled A in FIG. 3;
FIG. 5 is a schematic structural diagram of a mechanical push switch according to an embodiment of the present invention in an open state;
fig. 6 is a schematic structural diagram of a mechanical push switch according to an embodiment of the present invention in an on state.
Reference numerals:
10-a body; 20-handle, 201-front cover, 202-back cover; 30-air inlet; 40-air outlet; 50-a motor; 60-tuyere fixing piece and 70-heating wire frame; 80-bobbin shield, 801-through hole;
1-mechanical press switch, 11-pressure sheet, 12-press contact column, 13-press cover; 2-an inductive switch; 3-a key switch; 4-key circuit board.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the utility model have been omitted.
Fig. 1 to 4 show a schematic structural diagram of a hair dryer (including a switch) of an embodiment of the utility model; fig. 5 and 6 show schematic structural views of a mechanical push switch showing an embodiment of the present invention.
As shown in fig. 1 to 6, an embodiment of the present invention provides a switch for an electric hair dryer, the electric hair dryer includes a main body 10 and a handle 20, a main control circuit board is installed in the handle 20, the switch includes a mechanical push switch 1 and an inductive switch 2 which are installed on the handle 20, the mechanical push switch 1 and the inductive switch 2 are respectively connected with the main control circuit board, and after the mechanical push switch 1 is pushed, the main control circuit board can control the electric hair dryer to start; when the mechanical press switch 1 is not pressed and/or the sensing switch 2 does not sense that the handle 20 is held, the main control circuit board can control the electric hair drier to stop working.
Specifically, when the electric hair dryer is used, a hand firstly holds the handle 20 of the electric hair dryer, at the moment, the hand is in contact with the handle 20, namely the inductive switch 2 is in an open state, when the hand presses the mechanical push switch 1, namely the mechanical push switch 1 is also in the open state, at the moment, a working circuit of the electric hair dryer is switched on, and the main control circuit board controls the electric hair dryer to start to work; when the mechanical press switch 1 is not pressed, the working circuit is disconnected, the main control circuit board controls the electric hair drier, and even if the induction switch 2 can induce that the handle 20 is held, the electric hair drier is in a closed state (stops working); and when the hand leaves handle 20, inductive switch 2 is in the closed state, and mechanical press switch 1 also can be in the closed state because of not receiving the pressure of holding, thereby makes the hairdryer be in the closed state, no matter which is in the closed state mechanical press switch 1 and inductive switch 2, or two are in the closed state simultaneously, the operating circuit all can be in the off-state, at this moment, main control circuit board control hairdryer automatic shutdown to the potential safety hazard that leads to the hairdryer to continue work and cause because of forgetting to close the power, leave or touch by mistake (for example inductive switch 2 makes mistakes) etc..
According to the switch provided by the embodiment of the utility model, the mechanical press switch 1 and the inductive switch 2 are arranged on the handle 20 of the electric hair drier, and the working circuit of the electric hair drier is switched on after the mechanical press switch 1 is pressed, so that the electric hair drier is controlled to start; when the mechanical press switch 1 is not pressed and/or the inductive switch 2 does not sense that the handle 20 is held, the working circuit is disconnected, and the electric hair drier is controlled to stop working; the mechanical push switch 1 and the inductive switch 2 can form a double-protection circuit which can be automatically started and stopped, so that the electric hair drier is ensured to be in a closed state under the conditions of no people, mistaken touch, button failure and the like, the electric hair drier is prevented from continuously working, and potential safety hazards are reduced.
As shown in fig. 1 to 3, the hair dryer further includes an air inlet 30, an air outlet 40, and a motor 50 electrically connected to the main control circuit board, wherein the air inlet 30 is disposed at the tail of the handle 20, the air outlet 40 is disposed in the main body 10, and the motor 50 is disposed in the handle 20.
The main control circuit board is a main control PCB board. After the working circuit is switched on according to the received switch signal, the main control circuit board controls the motor 50 to rotate and work, external air is introduced into the electric hair drier from the air inlet 30, and hot air or cold air is blown out from the air outlet 40 after the electric hair drier is heated or cooled.
In this embodiment, as shown in fig. 5 and 6, the mechanical push switch 1 includes a push plate 11 and a push contact post 12, the push contact post 12 is fixed to a handle 20, one end of the push plate 11 is fixed to the handle 20 by a fastener (e.g., a screw), and the other end of the push plate 11 is a free end for connecting or disconnecting with the push contact post 12, so as to connect or disconnect an operating circuit electrically connected to the push plate 11.
Specifically, the fixed end of the pressure plate 11 is electrically connected with the main control circuit board, the main control circuit board and the pressing contact column 12 are respectively connected with the positive pole and the negative pole of the power supply, and after the free end of the pressure plate 11 is in contact connection with the pressing contact column 12, the pressure plate 11 is connected with the pressing contact column 12 in series and the working circuit is switched on, so that the electric hair drier is started to work.
Furthermore, the pressure plate 11 is an elastic pressure sensor, the size of the output resistor of the pressure plate is reduced along with the increase of the pressure applied to the surface of the pressure plate 11, and after the main control circuit board receives the resistance signal of the output resistor, the main control circuit board can adjust the wind speed or the temperature of the hair dryer according to the change of the resistance signal, namely, the wind speed or the temperature of the hair dryer is controlled by pressing the pressure of the mechanical push switch 1.
The pressure plate 11 and the pressing contact column 12 are both conductive pieces, which can ensure the timely connection or disconnection of a working circuit, in this embodiment, the pressure plate 11 is connected with a main control circuit board, the main control circuit board and the pressing contact column 12 are respectively connected with the positive pole and the negative pole of a power supply, in other embodiments, the pressing contact column 12 can also be connected with the main control circuit board, the main control circuit board and the pressure plate 11 are respectively connected with the positive pole and the negative pole of the power supply, and when the pressure plate 11 is in contact connection with the pressing contact column 12, the working circuit can be connected; when the pressure sheet 11 is not in contact with the pressing contact column 12, the operating circuit can be disconnected.
As shown in fig. 5, when the hair dryer is not in operation, the free end of the pressure plate 11 is not connected with the pressing contact column 12, the mechanical pressing switch 1 is in an open circuit state, and the operating circuit of the hair dryer is disconnected; as shown in fig. 6, when the hair dryer is working, the pressure plate 11 is pressed down to contact and connect with the pressing contact column 12, the mechanical pressing switch 1 is in the on state at this time, the working circuit of the hair dryer is switched on, at this time, the main control circuit board transmits a control signal to the motor 50 to control the motor 50 to rotate and start working.
Further, as shown in fig. 4, the mechanical push switch 1 further includes a push cap 13 attached to an outer side of the pressure sheet 11 to protect the pressure sheet 11 and the push contact post 12. The pressing cover 13 is made of a flexible material, and the pressing cover 13 is attached to the handle 20, so that the pressing is convenient, and the pressing cover can be attached to the pressure sheet 11, and the pressing sensitivity is improved.
In this embodiment, the inductive switch 2 may be a pressure inductive switch, and when the inductive switch 2 senses the force of the hand-holding handle 20, the inductive circuit is turned on; when no force is sensed to grip handle 20, the sensing circuit is closed.
In other embodiments, the inductive switch 2 may also be a capacitive inductive switch, and includes a plurality of touch-sensitive electrodes disposed on the handle 20, the touch-sensitive electrodes are electrically connected to the main control circuit board, when a hand touches the touch-sensitive electrodes (holds the handle 20), due to the conductivity of the human body, the electric field at the electrodes can be enhanced to form a capacitor, and the main control circuit board can detect the capacitor and turn on an inductive circuit connected to the main control circuit board; when the hand leaves the handle 20, the main control circuit board does not detect the capacitance, and the sensing circuit is disconnected and closed.
The inductive switch 2 can also be a differential pressure inductive switch, and the micro-voltage difference generated by the human body contacting with the conducting strip is used for switching on or switching off the inductive circuit.
As shown in fig. 1, the handle 20 is provided with mounting positions for mounting the mechanical push switch 1 and the inductive switch 2. In this embodiment, the inductive switch 2 is disposed close to the mechanical push switch 1, so as to facilitate the cooperation between the two.
In some embodiments, the switch further comprises a key switch 3, a key circuit board 4 is arranged at the key switch 3, the key circuit board 4 is electrically connected with the main control circuit board, and different functions of the hair dryer can be realized by pressing the key switch 3.
In particular, the key switch 3 comprises a power key to control the hair dryer to switch on or off the external power supply. When the electric hair drier works, the electric hair drier can be connected with an external power supply by turning on a power supply button, at the moment, the electric hair drier is in a standby state, and the electric hair drier can be controlled to start to work by pressing the mechanical press switch 1; when the mechanical press switch 1 is not pressed and/or the sensing switch 2 does not sense that the handle 20 is held, the electric hair dryer can be controlled to stop working, and the electric hair dryer is protected in a standby state.
The key switch 3 may also comprise a function key switch such as cold air or hot air, when the hair dryer is in a cold air or hot air state by pressing the key switch 3, the wind speed or temperature of the hair dryer in the cold air or hot air state can be adjusted by changing the pressing force degree of the mechanical press switch 1.
The handle 20 comprises a front cover 201 and a back cover 202 which are connected with each other, a mechanical press switch 1 and an inductive switch 2 are arranged on one of the front cover 201 or the back cover 202, and a key switch 3 is arranged on the other of the front cover 201 or the back cover 202.
In this embodiment, the mechanical push switch 1 and the inductive switch 2 are both disposed on the rear cover 202, and the push switch 3 is disposed on the front cover 201.
The embodiment of the utility model also provides the electric hair drier with the switch.
As shown in fig. 1 to 3, the hair dryer includes a main body 10 and a handle 20, an air inlet 30 is provided on the handle 20, an air outlet 40 is provided on the main body 10, an air outlet fixing member 60 is provided at a position close to the air outlet 40 in the main body 10, one end of the air outlet fixing member 60 is connected to the air outlet 40, and a heating wire rack 70 is provided at the other end of the air outlet fixing member 60 to provide heat required for blowing for the hair dryer.
In this embodiment, the handle 20 is provided with the air inlet 30, and the main body 10 is provided with the air outlet 40, so that the length of the air duct in the hair dryer can be prolonged, the air output of the hair dryer can be increased, and the air blowing effect can be improved.
Preferably, the intake vent 30 is provided at the rear portion of the handle 20 (the portion of the handle 20 away from the main body 10).
Further, a bobbin shielding member 80 is installed on the periphery of the heating bobbin 70, and a through hole 801 is formed in the bobbin shielding member 80.
When the main control circuit board controls the motor 50 of the hair dryer to start rotating at a high speed, the motor drives air to enter the handle 20 from the air inlet 30 and flow along the air channel in the handle 20 and the main body 10, the air is divided into two flow paths by the wire frame shielding piece 80 when passing through the position of the heating wire frame 70 arranged in the main body 10, one flow path is heated by the heating wire frame 70 and then becomes hot air, the other flow path is blocked in a flow space formed between the outer wall of the wire frame shielding piece 80 and the inner wall of the main body 10, and a plurality of through holes 801 are formed in the wire frame shielding piece 80, so that the blocked air in the flow space can flow into the space between the heating wire frame 70 and the wire frame shielding piece 80 through the through holes 801 and can be converged with one hot air heated by the heating wire frame 70 and flow out at the air outlet 40, thereby increasing the air output of the hair dryer and improving the air blowing effect.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (10)
1. A switch is used for an electric hair drier and comprises a main body and a handle, wherein a main control circuit board is installed in the handle; when the mechanical press switch is not pressed and/or the induction switch does not sense that the handle is held, the main control circuit board can control the electric hair drier to stop working.
2. The switch of claim 1, wherein the mechanical push switch comprises a pressure plate and a push contact post, the push contact post is fixed on the handle, one end of the pressure plate is fixed on the handle through a fastener, and the other end of the pressure plate is a free end and used for connecting or disconnecting with the push contact post, so as to connect or disconnect the operating circuit of the hair dryer.
3. The switch of claim 2, wherein the pressure plate is an elastic pressure sensor, the output resistance of the pressure plate decreases with the increase of the pressure applied to the surface of the pressure plate, and the main control circuit board can control the wind speed or temperature of the hair dryer according to the pressure.
4. The switch of claim 2, wherein the mechanical push switch further comprises a push cap mounted to an outer side of the pressure pad.
5. The switch of claim 4, wherein the pressing cap is made of a flexible material, and the pressing cap is attached to the handle.
6. The switch of claim 1, wherein the inductive switch is a pressure inductive switch, a capacitive inductive switch, or a differential pressure inductive switch.
7. The switch of claim 1, wherein the handle has mounting locations for mounting the mechanical push switch and the inductive switch.
8. The switch of claim 1, wherein the handle comprises a front cover and a back cover that are connected to each other, the mechanical push switch and the inductive switch are disposed on one of the front cover or the back cover, and the other of the front cover or the back cover is provided with a push switch.
9. A hair dryer, characterized in that it has a switch according to any of claims 1-8.
10. The hair dryer of claim 9, wherein the hair dryer comprises a main body and a handle, the handle is provided with an air inlet, the main body is provided with an air outlet, an air inlet fixing member is arranged in the main body and close to the air outlet, one end of the air inlet fixing member is connected with the air outlet, and the other end of the air inlet fixing member is provided with a heating wire rack to provide heat required by the hair dryer for blowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121728102.7U CN215737372U (en) | 2021-07-27 | 2021-07-27 | Switch and have its hairdryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121728102.7U CN215737372U (en) | 2021-07-27 | 2021-07-27 | Switch and have its hairdryer |
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| Publication Number | Publication Date |
|---|---|
| CN215737372U true CN215737372U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121728102.7U Active CN215737372U (en) | 2021-07-27 | 2021-07-27 | Switch and have its hairdryer |
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| CN (1) | CN215737372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468511A (en) * | 2022-02-16 | 2022-05-13 | 深圳盈特创智能科技有限公司 | Electric hair drier method and system for controlling wind speed and temperature based on holding strength |
-
2021
- 2021-07-27 CN CN202121728102.7U patent/CN215737372U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468511A (en) * | 2022-02-16 | 2022-05-13 | 深圳盈特创智能科技有限公司 | Electric hair drier method and system for controlling wind speed and temperature based on holding strength |
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