CN215570661U - Key device and range hood applying same - Google Patents
Key device and range hood applying same Download PDFInfo
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- CN215570661U CN215570661U CN202120341024.9U CN202120341024U CN215570661U CN 215570661 U CN215570661 U CN 215570661U CN 202120341024 U CN202120341024 U CN 202120341024U CN 215570661 U CN215570661 U CN 215570661U
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Abstract
The utility model provides a button device and applied range hood that has this button device which characterized in that: comprises an infrared distance measuring device; the lightproof light path channel is arranged on the back of the control panel and comprises an incident tube and a reflecting tube which are communicated with each other; the front surface of the control panel is also correspondingly provided with a luminous tube right above and/or right below each key icon, the incident tube is provided with a light transmitting area capable of enabling infrared signals to be attenuated at the position corresponding to the key icon, the light transmitting amount of the light transmitting area corresponding to each key icon is different, and the control panel is made of light transmitting materials in the area where the key icon is located. The utility model also discloses a range hood applying the key device. The utility model has the advantages that: the solid key is omitted, and the material production cost is reduced; the PCB circuit design of the key is simplified; the service life of the product is prolonged.
Description
Technical Field
The utility model relates to a key structure, in particular to a touch control key device and a range hood applying the key device.
Background
In the prior art, the mechanical key adopts the traditional mechanical structure part, so that the occupied space is large, the mechanical switch is easily damaged or failed due to the influence of the environment, and the installation and the maintenance are troublesome.
The touch key is a novel key mode with convenient use instead of a mechanical key, and the current touch keys comprise two types: the touch key and the touch key are characterized in that aiming at the first touch key, the existing utility model 'external touch electronic switch of a range hood' with the patent number of 201020579780.7 discloses an external touch electronic switch of the range hood, the touch electronic switch comprises an indicator light, a touch device, an electronic circuit board, keys, an indicator light cap, a shell, a switch cover plate, a rear cover and a bracket, each operable key of the touch key usually corresponds to an entity key and cannot be hidden, and the key entity is visible; secondly, the component parts related to the light touch key are easy to damage.
For the second kind of touch key, there is a patent 200820166298.3 of utility model "touch type smoke exhaust ventilator controller" that discloses such a key structure: at least one metal touch key is welded on the circuit board, an aperture guide is sleeved outside each touch key, a light-emitting part is arranged between each aperture guide and the circuit board, and the touch keys and the light-emitting part are connected in a controller circuit; most of the touch keys adopt capacitive touch type entity keys, a chip special for touch processing needs to be carried, the circuit is complex, the risk of closed source codes is high, and the cost is high; and the control circuit adopting the touch keys has high wiring requirements, and the design and production cost is increased.
In summary, in order to solve the above problems, a further improvement of the existing control key is needed to achieve the functional perfection of simplifying the structure, saving the cost, optimizing the design and improving the reliability on the premise of ensuring the use function.
SUMMERY OF THE UTILITY MODEL
The first technical problem to be solved by the present invention is to provide a key device that does not require physical keys and has long service life and low cost.
The second technical problem to be solved by the present invention is to provide a range hood using the key device in view of the above prior art.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: the utility model provides a button device, installs on electrical equipment's control panel which characterized in that: the key device comprises
The infrared distance measuring device is arranged on one side of the control panel and is positioned on the back of the control panel, the infrared distance measuring device comprises an infrared transmitting tube and a corresponding infrared receiving tube which are arranged on the same side, and the infrared distance measuring device comprises an infrared transmitting path and an infrared receiving path which are parallel to each other and are arranged at intervals in a power-on state;
the light-tight light path channel is arranged on the back of the control panel and comprises an incident tube and a reflecting tube which are communicated with each other, the inlet of the incident tube is opposite to the infrared transmitting tube and can be penetrated by the infrared transmitting path, the outlet of the reflecting tube is opposite to the infrared receiving tube and can be penetrated by the infrared receiving path, and the infrared transmitting signal forms a closed light path transmission from the inlet of the incident tube to the outlet of the reflecting tube;
the infrared signal attenuation control device comprises at least two key icons, a light emitting tube and a control panel, wherein the at least two key icons are arranged on the control panel and are arranged at intervals along the length direction of the incident tube, the front surface of the control panel is correspondingly provided with a light emitting tube right above and/or right below each key icon, the incident tube is provided with light transmitting areas capable of enabling infrared signals to be attenuated at positions corresponding to the key icons, the light transmitting amount of the light transmitting areas corresponding to the key icons is different, and the control panel is made of light transmitting materials in the areas where the key icons are located.
In view of the beautiful design and the convenience of the transmission of the light path, preferably, the light path channel is in a C-shaped structure, and the incident tube and the reflection tube are arranged in parallel.
In order to prevent the influence of interference signals, the infrared transmitting tube preferably transmits infrared signals according to a set frequency.
The technical scheme adopted by the utility model for solving the second technical problem is as follows: the utility model provides an use range hood that has foretell button device, this range hood is including control panel, its characterized in that: the key device is arranged on the control panel.
Compared with the prior art, the utility model has the advantages that: 1. the solid key is omitted, and the material production cost is reduced; 2. the product development is more simplified and controllable, a chip for special touch processing is not required to be carried, and the PCB circuit design of the key is simplified; 3. after the solid key is cancelled, the influence of oil stain and water stain is small and the product is not easy to damage in use, thereby prolonging the service life of the product.
Drawings
Fig. 1 is a schematic structural diagram of a key device according to an embodiment of the utility model.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the embodiment discloses a key device, which includes an infrared distance measuring device 1, a key icon 2 and a light emitting tube 5, wherein the infrared distance measuring device 1 is installed on any one side of a control panel 3 and is located on the back of the control panel 3, the infrared distance measuring device 1 includes an infrared transmitting tube 11 and a corresponding infrared receiving tube 12 which are located on the same side, when the infrared distance measuring device 1 is in a power-on state and an obstacle is touched on a transmitting path of the infrared transmitting tube 11, an infrared signal is reflected back by the obstacle, and an infrared transmitting path 1f and an infrared receiving path 1s which are parallel to each other and are arranged at an interval can be formed; in order to avoid misoperation, the distance between the infrared transmitting tube 11 and the infrared receiving tube 12 can be properly adjusted to be large; in order to prevent the influence of the interference signal, the infrared transmitting tube 11 does not continuously transmit the signal but transmits the infrared signal at a set specific frequency.
The back of the control panel 3 is further provided with a lightproof light path channel 4, the light path channel 4 is C-shaped and comprises an incident tube 41 and a reflection tube 42 which are communicated with each other, the incident tube 41 and the reflection tube 42 are arranged in parallel, the inlet of the incident tube 41 is opposite to the infrared emission tube 11 and can be penetrated by the infrared emission path 1f, the outlet of the reflection tube 42 is opposite to the infrared reception tube and can be penetrated by the infrared reception path 1s, and the infrared emission signal is transmitted from the inlet of the incident tube 41 to the outlet of the reflection tube 42 through a closed light path.
The number of the key icons 2 is at least two, the specific number is set according to the use requirement of an actual product, the key icons 2 are arranged on the control panel 3 and are arranged at intervals along the length direction of the incident tube 41, and the position of each key icon 2 has a specific distance range relative to the infrared distance measuring device 1; a light emitting tube 5 is correspondingly arranged on the front surface of the control panel 3 right above and/or right below each key icon 2, as shown in fig. 1, a light emitting tube 5 is correspondingly arranged on the front surface of the control panel 3 right above each key icon 2, when a key icon 2 is selected, the light emitting tube 5 corresponding to the key icon 2 is conducted, and the key icon 2 is lightened; the incident tube 41 is provided with a light-transmitting area capable of attenuating the infrared signal at a position corresponding to the key icon 2, the light-transmitting amount of the light-transmitting area corresponding to each key icon 2 is different, and the control panel 3 is made of a light-transmitting material at the area where the key icon 2 is located.
In the embodiment, the key position is determined by using the attenuation principle of the infrared signal, in the absence of any operation state on the control panel 3, the infrared signal is incident from the inlet of the incident tube 41, passes through the closed light path channel with the C-shaped structure and then is emitted from the outlet of the reflection tube 42, when the light path passes through each key icon 2, the light path is attenuated in sequence due to the existence of the light-transmitting area, as long as the total path length of the light path channel is fixed, after passing through all the key icons 2, the infrared distance measuring device 1 can obtain a fixed attenuated signal value, taking the signal value as a reference value, when a certain key icon 2 is pressed by a finger, the light-transmitting area part corresponding to the key icon 2 is shielded, after the infrared signal passes through the light path channel, a new attenuation amount can be obtained, because the light-transmitting amounts of all the light-transmitting areas are different, when different key icons 2 are pressed, the signal values after attenuation obtained by the infrared distance measuring device 1 are different, and it is possible to determine which key icon 2 is pressed by the change in the signal values of different attenuation amounts, thereby determining different key functions.
The key device of the embodiment can be used for various electrical equipment, such as a range hood, the range hood comprises a control panel 3, the control key is installed on the control panel 3 of the range hood, and the control method of the range hood comprises the following steps:
(1) powering on the range hood, powering on the infrared distance measuring device 1 and initializing equipment;
(2) judging whether the received attenuated signal value is equal to a reference value or not by an infrared receiver of the infrared distance measuring device 1, if so, keeping all the light emitting tubes in a closed state, and circulating the step; if not, continuing the next step;
(3) according to preset parameters, each key icon 2 corresponds to an attenuated signal value after being covered, according to the corresponding relation, the currently received attenuated signal value is detected, the position of the pressed key icon 2 is further obtained, meanwhile, a light emitting tube corresponding to the key icon 2 is lightened, the main controller controls the range hood to execute a control instruction of a corresponding function of the key icon 22, and in the process that the range hood executes the current control instruction, the light emitting tube corresponding to the control instruction is always in a conducting state.
The embodiment utilizes the attenuation principle in the infrared signal transmission process, and finally obtains the signal value after different attenuations according to the difference of the light transmission quantity to judge 2 positions of the pressed key icon, need not to adopt the entity key, simple structure, it is convenient to realize, can effectively prolong the life and the reliability of key.
Claims (4)
1. A key device is arranged on a control panel (3) of electric equipment, and is characterized in that: the key device comprises
The infrared distance measuring device (1) is arranged on one side of the control panel (3) and is positioned on the back of the control panel (3), the infrared distance measuring device (1) comprises an infrared transmitting tube (11) and a corresponding infrared receiving tube (12) which are arranged on the same side, and the infrared distance measuring device (1) comprises an infrared transmitting path (1f) and an infrared receiving path (1s) which are parallel to each other and are arranged at intervals in an electrified state;
the light-tight light path channel is arranged on the back of the control panel (3) and comprises an incident tube (41) and a reflecting tube (42) which are communicated with each other, the inlet of the incident tube (41) is opposite to the infrared transmitting tube (11) and can be penetrated by an infrared transmitting path (1f), the outlet of the reflecting tube (42) is opposite to the infrared receiving tube (12) and can be penetrated by an infrared receiving path (1s), and the infrared transmitting signals form closed light path transmission from the inlet of the incident tube (41) to the outlet of the reflecting tube (42);
the infrared signal processing device comprises at least two key icons (2), wherein the two key icons (2) are arranged on the control panel (3) and are arranged at intervals along the length direction of the incident tube (41), the front face of the control panel (3) is further provided with a luminous tube (5) above and/or below each key icon (2), the incident tube (41) is provided with a light transmission area capable of enabling an infrared signal to be attenuated at the position corresponding to the key icon, the light transmission amount of the light transmission area corresponding to each key icon (2) is different, and the control panel is made of light transmission materials in the area where the key icons (2) are located.
2. The key device of claim 1, wherein: the light path channel is C-shaped, and the incident tube (41) and the reflecting tube (42) are arranged in parallel.
3. The key device of claim 1, wherein: the infrared transmitting tube (11) transmits infrared signals according to set frequency.
4. A range hood applying the key device according to any one of claims 1 to 3, the range hood comprising a control panel (3), characterized in that: the key device is arranged on the control panel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120341024.9U CN215570661U (en) | 2021-02-05 | 2021-02-05 | Key device and range hood applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120341024.9U CN215570661U (en) | 2021-02-05 | 2021-02-05 | Key device and range hood applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215570661U true CN215570661U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120341024.9U Active CN215570661U (en) | 2021-02-05 | 2021-02-05 | Key device and range hood applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215570661U (en) |
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2021
- 2021-02-05 CN CN202120341024.9U patent/CN215570661U/en active Active
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