CN220915268U - Key device, range hood with same and gas stove - Google Patents

Abstract

The application discloses a key device, a range hood and a gas stove with the key device, wherein the key device comprises: the light guide plate is provided with an operation mark, and one side of the light guide plate in the thickness direction is provided with an induction area corresponding to the position of the operation mark; the light-emitting element irradiates the light entering side of the light guide plate and is arranged corresponding to the operation mark; the sensing element is used for collecting signals from the sensing area; and the control element is connected with the sensing element and the light-emitting element and correspondingly drives the light-emitting element according to a signal from the sensing element. The light guide plate of the application is not used as a signal emitting device such as a circuit switch, but only needs to provide an induction area and an operation mark, thereby improving the ornamental value of the light guide plate.

Description

Key device, range hood with same and gas stove

Technical Field

The application relates to the technical field of smoke ventilator control, in particular to a key device, a smoke ventilator with the key device and a gas stove.

Background

A range hood generally comprises a key device and controlled equipment controlled by the key device, such as a lighting lamp of the range hood, a range hood fan and other electronic control equipment in a kitchen.

The traditional key device adopts a push type or touch type key, and is easy to age, wear and accumulate oil stains in the long-term use process. For example, patent document CN208418871U discloses a control panel of a smoke machine, which realizes a key function of the smoke machine by arranging different keys.

On the basis, a key device using an operation panel to replace keys is also disclosed in, for example, patent document CN207317018U discloses an operation panel of a range hood, and although the aesthetic property is improved, the operation panel of man-machine interaction increases the hardware cost.

Disclosure of utility model

In view of the foregoing, it is desirable to provide a key device.

The key device of the present application includes:

The light guide plate is provided with an operation mark, and one side of the light guide plate in the thickness direction is provided with an induction area corresponding to the position of the operation mark;

The light-emitting element irradiates the light entering side of the light guide plate and is arranged corresponding to the operation mark;

The sensing element is used for collecting signals from the sensing area;

And the control element is connected with the sensing element and the light-emitting element and correspondingly drives the light-emitting element according to a signal from the sensing element.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Optionally, the operation mark is arranged inside the light guide plate.

Optionally, the side wall of the light incident side is perpendicular to the illumination direction of the light emitting element, and the operation mark determines a display plane in the light guide plate, and the display plane is obliquely arranged relative to the illumination direction of the light emitting element.

Optionally, the light-emitting device comprises a first light blocking member, wherein the first light blocking member is arranged around the light-emitting element and provided with a first opening facing the light incident side, and the first light blocking member is abutted to the light incident side and used for limiting the illumination direction of the light-emitting element.

Optionally, the key device includes a circuit board, and the first light blocking member, the light emitting element, the sensing element, and the control element are all mounted on the circuit board;

The circuit board is provided with a plugging groove, the first light blocking piece is provided with a mounting part far away from the light incident side, and the mounting part is fixed to the plugging groove.

Optionally, the key device includes a casing for fixing the light guide plate, a mounting groove and a detection hole are provided in the casing, the light incident side is inserted and fixed in the mounting groove, the sensing element is mounted in the detection hole, and the detection hole faces the sensing area.

Optionally, the operation identifier includes a plurality of light emitting elements and a plurality of sensing elements respectively disposed along a length direction of the mounting groove.

Optionally, the casing includes casing and cap that mutually support, mounting groove and detection hole are seted up on the shell wall opposite with the cap, just the light guide plate is arranged perpendicularly for this shell wall.

Optionally, a rib plate is further disposed in the housing, and the rib plate and the housing cover clamp and fix the circuit board.

Optionally, the casing cover is provided with a wire hole, and the connecting wire of the control element and the controlled component passes through the wire hole.

Optionally, the control element has a signal output for connection to a controlled component, the control element driving the controlled component accordingly in dependence on a signal from the sensing element.

Optionally, the sensing element includes an infrared emitter and an infrared receiver cooperating with each other, the infrared emitter providing an emission signal, the infrared receiver being configured to receive the emission signal reflected back to the infrared receiver via the sensing region.

Optionally, a second light blocking member is included, the second light blocking member being disposed around the sensing element and having a second opening facing the sensing region.

Optionally, the controlled components include a fan and an illumination lamp.

The application also provides a range hood with the key device.

The application also provides a gas stove with the key device.

The key device of the application has at least the following technical effects:

The sensing element can collect external information, for example, when the finger of a user reaches the sensing area, the sensing element acquires the signal through the detection hole, and the control element can control the starting and stopping of the light emitting element and the controlled component according to the sensing result of the sensing element. The application changes the working state of the controlled component according to the operation of the user, thereby realizing the basic function of the key device.

The light guide plate is not used as a signal emitting device, only the sensing area and the operation mark are needed, the light guide plate is convenient to clean, and the ornamental value is improved.

The light entering side receives the light of the light element, and the display plane determined by the operation mark and the illumination direction of the light-emitting element are arranged in a relatively inclined manner, so that the light of the light-emitting element irradiates different parts of the operation mark along the illumination path, light reflection is well carried out, and the operation mark is more obviously displayed on the light guide plate.

Drawings

Fig. 1 to fig. 2 are schematic structural diagrams of a key device according to an embodiment of the application;

FIG. 3 is a schematic view illustrating an internal structure of the housing 210 in FIG. 1;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is a cross-sectional view of FIG. 4 along section line A-A';

Fig. 6 is a schematic cross-sectional view of fig. 5 with the light guide plate 100 and the housing 210 omitted;

FIG. 7 is an assembled schematic view of FIG. 2;

FIG. 8 is an enlarged view of portion A of FIG. 6;

FIG. 9 is an enlarged view of portion B of FIG. 7;

Fig. 10 is a schematic view of the structure of fig. 9 with the first light blocking member 311 and the second light blocking member 323 removed;

Reference numerals in the drawings are described as follows:

100. a light guide plate; 101. a light incident side; 110. an operation identifier; 111. a display plane; 120. an induction zone;

200. A housing; 201. a mounting groove; 202. a detection hole;

210. a housing; 211. a shell wall; 212. rib plates;

220. a cover; 221. an auxiliary plate; 222. a wire hole;

300. a circuit board; 301. a plug-in groove;

310. A light emitting element; 311. a first light blocking member; 312. a first opening; 313. a mounting part;

320. An inductive element; 321. an infrared emitter; 322. an infrared receiver; 323. a second light blocking member; 324. and a second opening.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implicitly indicating the number, order of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present disclosure, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements expressly listed but may include other elements not expressly listed or inherent to such article or apparatus.

In the present application, the terms "corresponding", "matched", "compatible", such as "B corresponding to a", "a corresponding to B", or "B corresponding to a", mean that B has a correspondence with the shape, position, or function of a, from which B can be determined. Determining B from a does not mean determining B from a alone, but may also be based on a and/or other information.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can lead the interior of two elements to be communicated or lead the two elements to be in interaction relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 5, in an embodiment of the present application, a key device is provided, which can be applied to a range hood device as a range hood key device, and the key device includes a light guide plate 100 and a housing 200. The light guide plate 100 is provided therein with an operation mark 110, and has a sensing region 120 corresponding to a position of the operation mark 110 at one side in a thickness direction. The casing 200 is provided with a mounting groove 201 and a detection hole 202, one side of the light guide plate 100 is a light incident side 101, the light incident side 101 is inserted and fixed in the casing 200, and the detection hole 202 faces the sensing area 120, and the mounting groove 201 is specifically inserted and fixed in the casing 200.

The light guide plate 100 may be a plate structure through which light passes, such as a transparent plate, and a glass plate may be used. The operation identifier 110 is not limited to two states of switching, and may include a wind speed adjustment identifier, in addition to a common power operation identifier, a lighting operation identifier, and the like. The operation mark is provided inside the light guide plate 100 using a conventional process such as laser engraving. The sensing region 120 may be, for example, a region of the operation mark 110 adjacent to the surface of the light guide plate 100 in the thickness direction. The detection hole 202 faces the sensing area 120, and can be used for passing detection signals, such as infrared light signals, and the light received by the light incident side 101 is incident into the light guide plate 100 body, so that the operation mark 110 is obviously displayed under the action of the light.

The cabinet 200 includes a housing 210 and a housing cover 220 that are mated with each other, a mounting groove 201 and a detection hole 202 are opened on a housing wall 211 (a part of the housing 210) opposite to the housing cover 220, and the light guide plate 100 is vertically arranged with respect to the housing wall 211.

The key device includes a circuit board 300 fixed in the casing 200. The housing 210 is further provided with ribs 212, and the ribs 212 and the housing cover 220 clamp and fix the circuit board 300. Specifically, the cover 220 may also be provided with an auxiliary fixing member, such as an auxiliary board 221, for clamping the circuit board 300 in cooperation with the rib 212, so as to fix the circuit board 300 in the housing 200.

Referring to fig. 4 and 5, the key device further includes a light emitting element 310, a sensing element 320, and a control element. The light emitting element 310, the sensing element 320, and the control element are all mounted on the circuit board 300. The light emitting element 310, for example a straw hat lamp, the control element may be for example an integrated control chip.

The light emitting element 310 is installed in the cabinet 200 and irradiates the light incident side 101 of the light guide plate 100, and is disposed corresponding to the operation mark. The light emitting element 310 is disposed corresponding to the operation mark, and the light irradiation of the light emitting element is directed to the operation mark. The sidewall of the light incident side 101 is perpendicular to the illumination direction of the light emitting element 310 (as indicated by the dotted arrow in fig. 5), and the operation mark 110 defines a display plane 111 in the light guide plate 100. As shown in fig. 4, the display plane 111 is disposed obliquely with respect to the illumination direction of the light emitting element 310.

Referring to fig. 5 to 10, the key device includes a first light blocking member 311, where the first light blocking member 311 is disposed around the light emitting element 310 and has a first opening 312 facing the light incident side 101, and the first light blocking member 311 abuts against the light incident side 101 to limit the illumination direction of the light emitting element 310. The circuit board 300 is provided with a plugging slot 301, the first light blocking member 311 is provided with a mounting portion 313 away from the light incident side 101, and the mounting portion 313 is fixed to the plugging slot 301.

The sensing element 320 is mounted to the sensing hole 202 for collecting signals from the sensing region 120. The sensing element 320 includes an infrared transmitter 321 and an infrared receiver 322 that cooperate, the infrared transmitter 321 providing a transmit signal, and the infrared receiver 322 for receiving the transmit signal reflected back to the infrared receiver 322 via the sensing region 120.

The mounting groove 201 is strip-shaped and has a length direction, the operation mark 110 includes a plurality of light emitting elements 310 and sensing elements 320 disposed along the length direction of the mounting groove 201. The key device includes a second light blocking member 323, where the second light blocking member 323 is disposed around the sensing element 320 and has a second opening 324 facing the sensing area 120. Specifically, the second light blocking member 323 surrounds both the infrared emitter 321 and the infrared receiver 322 and isolates the infrared emitter 321 and the infrared receiver 322.

The infrared emitter 321 and the infrared receiver 322 can both adopt patch type or plug type elements, and the second light blocking piece 323 can be utilized for shielding and wrapping, so that the light emission and receiving directions of the infrared emitter 321 and the infrared receiver 322 are ensured to be corresponding, the emitting light path and the receiving light path have directivity, and the signals of the sensing area can be accurately received. Further, if the infrared emitter 321 and the infrared receiver 322 are both plug-in connectors, a light blocking member, such as a plastic tube, is disposed around the connection pins between the infrared emitter 321 or the infrared receiver 322 and the circuit board 300.

The control element is connected to the sensing element 320 and the light emitting element 310, and has a signal output for connection to a controlled component, such as a controlled component of a range hood including a fan, an illumination lamp, etc., and drives the light emitting element 310 and the controlled component accordingly in response to a signal from the sensing element 320. The connection line between the control element and the controlled component passes through the line hole 222 formed in the cover 220.

In use, when the operator's hand clicks the operation marker 110, the hand reaches the sensing area 120. At this time, the transmitting signal of the infrared transmitter 321 is blocked by the hand, the transmitting signal is reflected to the infrared receiver 322, the detecting signal is sent to the control element after the infrared receiver 322 reacts, the control element receives the signal, and the lighting state of the light emitting element and the working state of the controlled components such as the lighting lamp are changed at the same time, so that the basic function of the key device is realized. The application also provides a range hood or a gas stove, which is provided with the key device provided in each embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.

Claims (11)

1. The key device is characterized by comprising:

The light guide plate is provided with an operation mark, and one side of the light guide plate in the thickness direction is provided with an induction area corresponding to the position of the operation mark;

The light-emitting element irradiates the light entering side of the light guide plate and is arranged corresponding to the operation mark;

The sensing element is used for collecting signals from the sensing area;

And the control element is connected with the sensing element and the light-emitting element and correspondingly drives the light-emitting element according to a signal from the sensing element.

2. The key device of claim 1, wherein the operation mark is provided inside the light guide plate.

3. The key device according to claim 2, wherein the side wall of the light incident side is perpendicular to the illumination direction of the light emitting element, and the operation mark defines a display plane in the light guide plate, the display plane being disposed obliquely with respect to the illumination direction of the light emitting element.

4. The key device according to claim 1, comprising a first light blocking member disposed around the light emitting element, having a first opening facing the light incident side, the first light blocking member abutting the light incident side for restricting a light direction of the light emitting element.

5. The key device of claim 4, wherein the key device comprises a circuit board, and the first light blocking member, the light emitting element, the sensing element, and the control element are all mounted on the circuit board.

6. The key device according to claim 1, wherein the key device comprises a housing to which the light guide plate is fixed, the housing being provided with a mounting groove and a detection hole, the light incident side being inserted and fixed to the mounting groove, the sensing element being mounted to the detection hole, the detection hole being oriented to the sensing area; the operation mark comprises a plurality of light emitting elements and a plurality of sensing elements which are arranged along the length direction of the mounting groove.

7. The key device of claim 1, comprising a second light blocking member disposed around the sensing element and having a second opening toward the sensing region.

8. The key device of claim 1, wherein the control element has a signal output for connection to a controlled component, the control element driving the controlled component accordingly in response to a signal from the sensing element.

9. The key device of claim 1, wherein the sensing element comprises an infrared transmitter and an infrared receiver cooperating with each other, the infrared transmitter providing a transmit signal, the infrared receiver for receiving the transmit signal reflected back to the infrared receiver via the sensing region.

10. A range hood with a key device according to any one of claims 1 to 9.

11. A gas stove with a key device according to any one of claims 1 to 9.