CN216873183U - Touch key, key board and household appliance - Google Patents

Abstract

The utility model provides a touch key, a key board and a household appliance, and relates to the technical field of electronic products, wherein the touch key comprises a shell, a miniature PCB (printed circuit board) and a luminous body; the shell is provided with an accommodating cavity; the micro PCB is arranged on the shell, and the sensing surface of the micro PCB is positioned at the top end part of the shell; the luminous body is arranged in the accommodating cavity. The keypad includes touch keys. Through this touch button, thereby it influences the technical problem of touch effect to have alleviated current touch button its spring yielding, crooked when the installation, has improved the sensitivity of operation.

Description

Touch key, key board and household appliance

Technical Field

The utility model relates to the technical field of electronic products, in particular to a touch key, a key board and a household appliance.

Background

The touch key of the household appliance product generally comprises a plane tube and a spring sleeved outside the plane tube, the plane tube and the spring are installed on a key board, the key board is fixed in an installation cavity defined by a key board seat and a glass panel, and a function indication icon is printed on the glass panel and corresponds to the touch key. When a user touches the icon, the capacitance of the corresponding position is changed, then the spring conducts the change to the controller, and then the controller controls the corresponding planar tube to perform actions, such as normal lighting or flickering.

In the above design, since the spring is needed to sense the capacitance change caused by the touch, the sensing end of the spring is necessarily higher than the plane tube. The raised portion is easily deformed and skewed during assembly, thereby affecting the touch effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a touch key, a key board and a household appliance, which are used for relieving the technical problem that a spring of the touch key is easy to deform and skew when the touch key is installed in the related technology, so that the touch effect is influenced.

In order to solve the technical problems, the technical means adopted by the utility model are as follows:

in a first aspect, the present invention provides a touch key, including: the LED lamp comprises a shell, a micro PCB and a luminous body;

the shell is provided with an accommodating cavity;

the micro PCB is arranged on the shell, and the sensing surface of the micro PCB is positioned at the top end part of the shell;

the luminous body is arranged in the accommodating cavity.

Further, the shell is provided with a first opening, and the first opening is communicated with the accommodating cavity;

the micro PCB is fixed at the first opening and blocks the first opening.

Furthermore, the sensing surface is flush with the plane where the first opening is located;

or the sensing surface protrudes out of the plane where the first opening is located.

Furthermore, the miniature PCB is electrically connected with a touch pin, and the touch pin is led out of the housing from the accommodating cavity.

Furthermore, the luminous body is provided with at least two luminous pins, and the at least two luminous pins are led out of the accommodating cavity.

Further, the shell is provided with a second opening, and the second opening is communicated with the accommodating cavity and used for the touch pin and the light-emitting pin to penetrate through.

Further, the touch key further comprises a light guide body;

the light guide body is accommodated in the accommodating cavity and wraps the light emitting body.

Furthermore, the induction surface is provided with a metal foil which is provided with a hollow structure so as to form a corresponding icon.

In a second aspect, the key sheet provided by the present invention includes a key sheet body and at least one touch key;

at least one touch key is arranged on the key board body.

In a third aspect, the present invention provides a household appliance comprising a keypad, a touch panel and the keypad;

the key board seat is connected with the touch panel and forms an installation cavity;

the key board is arranged in the mounting cavity.

Compared with the prior art, the touch key provided by the utility model has the beneficial effects that:

in this application, the sensing surface of the micro PCB is exposed outside the housing, and when the micro PCB senses a capacitance change, the micro PCB conducts the change to the corresponding controller, and then the controller controls the light emitting body to act, such as normally on or twinkling. Compared with the prior art, the miniature PCB replaces a spring, the situation that the spring is higher than the plane tube can not occur, the technical problem that the spring of the existing touch key is easy to deform and skew when the existing touch key is installed so as to influence the touch effect is solved, and the stability of the performance of the touch key is ensured.

The key board provided by the utility model has the beneficial effects that:

the key board provided by the utility model comprises the touch keys, so that the technical advantages and effects achieved by the key board also comprise the technical advantages and effects achieved by the touch keys, and are not repeated herein.

The household appliance provided by the utility model has the beneficial effects that:

the household appliance provided by the utility model comprises the key board, so that the technical advantages and effects of the household appliance also comprise the technical advantages and effects of the key board, and are not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a touch key according to an embodiment of the present invention;

fig. 2 is a half sectional view of the touch key provided in the embodiment of the present invention when the micro PCB is flush with the top end of the housing;

fig. 3 is a half sectional view of the touch key provided in the embodiment of the present invention when the micro PCB protrudes from the top end of the housing;

fig. 4 is a cross-sectional view of the touch key provided in the embodiment of the present invention when the micro PCB is flush with the top end of the housing;

fig. 5 is a cross-sectional view of the touch key provided in the embodiment of the present invention when the micro PCB protrudes from the top end of the housing;

fig. 6 is a top view of a micro PCB in a touch key according to an embodiment of the present invention;

fig. 7 is a front view of a key sheet according to an embodiment of the present invention;

fig. 8 is a top view of a key sheet according to an embodiment of the utility model;

fig. 9 is a front view of a keypad according to an embodiment of the present invention;

fig. 10 is a top view of a keypad according to an embodiment of the present invention.

Icon:

100-a housing; 110-a housing chamber;

200-micro PCB; 210-a metal foil; 211-hollowed-out structure;

300-a light emitter; 310-light emitting pins;

400-touch pins; 500-a light guide; 600-a keypad body; 700-keypad mount; 800-touch panel.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the touch key provided in the present embodiment includes a housing 100, a micro PCB200(Printed Circuit Board), and a light emitter 300; the housing 100 has a receiving cavity 110; the micro PCB200 is mounted on the housing 100, and the sensing surface of the micro PCB200 is exposed to the outside of the top end of the housing 100; the light 300 is installed in the accommodating chamber 110. Among them, the micro PCB200 is a light, thin and small PCB, and has been widely applied as most electronic products are developed toward high density, miniaturization and high reliability.

Taking fig. 1 as an example, the sensing surface of the micro PCB200 is exposed outside the housing 100, and when the micro PCB200 senses a capacitance change, it will conduct the change to the corresponding controller, and then the controller controls the light 300 to operate, such as turning on or flashing. Compared with the prior art, the miniature PCB200 replaces a spring, the situation that the spring is higher than the plane tube can not occur, the technical problem that the spring of the existing touch key is easy to deform and skew when the existing touch key is installed so as to influence the touch effect is solved, and the stability of the performance of the touch key is ensured.

Further, with continued reference to fig. 1 to 5, the housing 100 is provided with a first opening, and the first opening is communicated with the accommodating cavity 110; the micro PCB200 is fixed at the first opening and blocks the first opening.

Continuing with fig. 1 as an example, the housing 100 is a cylindrical sleeve structure, the top opening of the housing 100 is the first opening, and the micro PCB200 is embedded in the top of the housing 100 and blocks the first opening. After the controller controls the light emitting body 300 to normally light or flash, the light emitted by the light emitting body 300 can be transmitted to the micro PCB200 through the first opening and then transmitted to the outside, so that the brightness of the touch key is ensured. Of course, the structure of the housing 100 is not limited to the one shown in the drawings, and a cylindrical structure having a polygonal cross section may be employed.

In an embodiment of the present application, referring to fig. 2 and 4, the micro PCB200 is embedded at the first opening, and an upper surface, i.e., a sensing surface, of the micro PCB200 is flush with the top of the housing 100. When the hand of the user touches the corresponding area of the sensing surface, the capacitance changes immediately, and the controller can determine that the user touches the key after receiving the change signal and control the light-emitting body 300 to be on or flash. Furthermore, the micro PCB200 is flush with the top of the casing 100, so that only the sensing surface is exposed outside the casing 100, the installation stability between the micro PCB200 and the casing 100 is improved, and the micro PCB200 and the casing 100 are prevented from shifting when the touch key is installed.

In other embodiments, referring to fig. 3 and 5, the micro PCB200 is embedded at the first opening, and an upper surface, i.e., the sensing surface, of the micro PCB200 protrudes out of the top of the housing 100. By the arrangement, capacitance change can be sensed, even if the touch position of a user is located at the periphery of the area just opposite to the sensing surface, the contact range of the touch key is expanded, and the sensitivity of the touch key is improved.

Further, referring to fig. 4 and 5, the micro PCB200 is electrically connected with a touch pin 400, and the touch pin 400 is led out of the housing 100 from the accommodating cavity 110.

Specifically, a touch pin 400 is electrically connected between the micro PCB200 and the controller, and after the micro PCB200 senses a capacitance change, the change signal is transmitted to the controller through the touch pin 400, so that the controller can make a corresponding response after a user touches a key.

Further, with reference to fig. 4 and fig. 5, the light emitter 300 has at least two light emitting pins 310, and the at least two light emitting pins 310 are led out from the accommodating cavity 110 to the outside of the accommodating cavity 110.

The light emitting pin 310 is led out of the accommodating cavity 110 and electrically connected to the controller, and is used for transmitting a light emitting instruction of the controller, so that the light emitter 300 emits light. Here, the Light emitter 300 may be an LED (Light-Emitting Diode) lamp or a lamp tube. Taking an LED lamp as an example, the LED lamp has at least two light emitting pins 310, and if a dual-color lamp is adopted, the LED lamp has three light emitting pins 310, and accordingly, when the LED lamp receives a light emitting command from the controller, the LED lamp can emit dual-color light.

Further, referring to fig. 1 to 5, the housing 100 is provided with a second opening, and the second opening is communicated with the accommodating cavity 110 for the touch pin 400 and the light emitting pin 310 to pass through.

Continuing with fig. 1 as an example, the bottom opening of the cylindrical housing 100 is a second opening, and the touch pin 400 and the light-emitting pin 310 are led out of the accommodating cavity 110 through the second opening. Due to the arrangement, the shortest leading-out path is provided for the pins, and the stability of pin electric connection is ensured.

Further, referring to fig. 2 to 5, the touch key further includes a light guide 500; the light guide 500 is accommodated in the accommodating cavity 110 in a filling manner and is wrapped outside the light emitter 300.

Specifically, the light guide 500 may be made of an epoxy resin material, and referring to fig. 4, the light guide 500 wraps the light emitter 300 and fills the entire accommodating cavity 110, so that the light emitter 300 is embedded in the housing 100 to fix the light emitter 300. When the light emitter 300 emits light, the light may be transmitted to the micro PCB200 through the light guide 500, and then transmitted to the outside, so as to achieve a good light display effect.

Further, referring to fig. 6, the sensing surface has a metal foil 210 thereon, and the metal foil 210 has a hollow structure 211 to form a corresponding icon.

With continued reference to fig. 6, the micro PCB200 may be a flexible PCB or a micro PCB, and the PCB has a metal foil 210 thereon, wherein the metal foil 210 may be a copper foil, and a hollow structure 211 is disposed on the copper foil, and the shape of the hollow structure 211 is the shape of the specific icon. In addition, the micro PCB200 may be formed by connecting a plurality of sub-PCBs, the plurality of sub-PCBs are electrically connected to each other, the touch pin 400 is electrically connected to one of the sub-PCBs, and the hollow structures 211 on the plurality of sub-PCBs are commonly surrounded to form a specific icon.

Specifically, when a user touches the area corresponding to the copper foil, the copper foil senses the capacitance change and transmits the capacitance change to the controller through the touch pin 400, the controller controls the light-emitting body 300 to emit light, and the light is transmitted to the outside through the hollow structure 211, so that a light-emitting icon in accordance with the hollow shape is formed on the copper foil, the light-emitting icon is a specific function indication icon, the specific shape of the light-emitting icon can be a circle as shown in fig. 6, or other shapes such as a rectangle or a triangle, or a pictographic pattern indicating a specific function such as water drops, snowflakes or flames.

With the arrangement, the touch keys have the touch and icon indication functions at the same time, and the touch panel 800 of the household appliance does not need to print the function icons. Compared with the problem that the deviation exists between the plane tube and the indication icon due to the fact that the key board is integrally fixed in a complex mode and large accumulated errors are caused, the luminous body 300 corresponds to the hollow structure 211, namely the indication icon, and the display effect is good.

Referring to fig. 1, the touch key provided by the present application includes a housing 100, a micro PCB200, and a light 300; the housing 100 has a receiving cavity 110; the micro PCB200 is embedded in the top of the housing 100, the copper foil on the micro PCB200 is provided with a hollow structure 211, the shape of the hollow structure 211 is the shape of the function indication icon, and the touch pin 400 is electrically connected to the copper foil and led out of the housing 100 from the accommodating cavity 110; the light emitter 300 is encapsulated in the accommodating cavity 110 through the light guide 500, and the pins of the light emitter 300 are also led out of the accommodating cavity 110 to the outside of the housing 100. When the capacitance changes due to the touch of a user, the copper foil transmits the change to the controller through the touch pin 400, the controller immediately gives a light-emitting instruction to the light-emitting body 300, and then the light illuminates the indication icon through the hollow structure 211.

It can be seen that above-mentioned touch button simple structure, and three functions of touch, light display and icon indication are integrated into one body, and simple to operate is swift, thereby can solve current touch button when the installation the technical problem that its spring is yielding, crooked thereby influence touch effect, solve and indicate that there is the deviation between icon and the flat tube and lead to the technical problem that display effect is poor and spring and glass area of contact less and installation error and lead to the unsatisfactory technical problem of touch effect, can reach the purpose that promotes user's touch experience and keypad display effect.

Referring to fig. 7 and 8, the key sheet provided in the present embodiment includes a key sheet body 600 and at least one touch key; at least one touch key is installed on the key sheet body 600.

Specifically, referring to fig. 8, the number of touch keys may be set according to actual functions, and different touch keys represent different functions and display different icons. In addition, since the key sheet includes the touch keys, the technical advantages and effects achieved by the key sheet are the same as those described above, and are not described herein again.

Referring to fig. 9 and 10, the present embodiment provides a home appliance including a keypad holder 700, a touch panel 800, and a keypad; the keypad 700 is connected with the touch panel 800, and the keypad and the touch panel form an installation cavity; the key board is installed in the installation cavity.

Taking fig. 9 as an example, the touch panel 800 may select transparent or semitransparent glass as required, the transparent or semitransparent glass is adhered to the keypad mount 700, and icons on the micro PCB200 may be displayed through the glass. When a certain function of the household appliance is started, the capacitance change of the corresponding touch key can be caused by touching the glass, so that the icon is lightened. Since the household appliance includes the key sheet, the technical advantages and effects achieved by the household appliance are the same as those described above, and are not described herein again.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein, and equivalents may be substituted for elements thereof without departing from the scope of the present invention.

Claims (10)

1. A touch key, comprising: a housing (100), a micro PCB (200) and a light emitter (300);

the shell (100) is provided with an accommodating cavity (110);

the micro PCB (200) is mounted on the shell (100), and the sensing surface of the micro PCB (200) is positioned at the top end part of the shell (100);

the luminous body (300) is arranged in the accommodating cavity (110).

2. Touch key according to claim 1, characterized in that said casing (100) is provided with a first opening communicating with said housing cavity (110);

the micro PCB (200) is fixed at the first opening and blocks the first opening.

3. The touch key of claim 2, wherein the sensing surface is flush with a plane in which the first opening is located;

or the sensing surface protrudes out of the plane where the first opening is located.

4. The touch key of claim 1, wherein a touch pin (400) is electrically connected to the micro PCB (200), and the touch pin (400) is led out from the accommodating cavity (110) to the outside of the housing (100).

5. The touch key of claim 4, wherein the light emitter (300) has at least two light emitting pins (310), and at least two light emitting pins (310) are led out from the accommodating cavity (110) to the outside of the accommodating cavity (110).

6. The touch key of claim 5, wherein the housing (100) is provided with a second opening, and the second opening is communicated with the accommodating cavity (110) for the touch pin (400) and the light-emitting pin (310) to pass through.

7. The touch key of claim 1, further comprising a light guide (500);

the light guide body (500) is accommodated in the accommodating cavity (110) and wraps the light emitting body (300).

8. Touch key according to any one of claims 1 to 7, characterized in that the sensing surface has a metal foil (210), and that the metal foil (210) is provided with a cut-out (211) to form a corresponding icon.

9. A keypad, characterized in that it comprises a keypad body (600) and at least one touch key according to any of claims 1 to 8;

at least one touch key is mounted on the key sheet body (600).

10. A household appliance, characterized by comprising a keypad holder (700), a touch panel (800) and a keypad according to claim 9;

the key board seat (700) is connected with the touch panel (800) and forms an installation cavity;

the key board is arranged in the mounting cavity.

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