CN212115289U

CN212115289U - Key feedback device and electronic equipment

Info

Publication number: CN212115289U
Application number: CN202020922563.7U
Authority: CN
Inventors: 谢佳松
Original assignee: Xingluo Intelligent Technology Co Ltd
Current assignee: Xingluo Intelligent Technology Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-12-08
Anticipated expiration: 2030-05-27

Abstract

The utility model provides a button feedback device, include: the touch key comprises a key body and a pressure sensing assembly, wherein the key body comprises a front surface for pressing touch and a bottom surface opposite to the front surface, and the pressure sensing assembly is connected to the bottom surface of the key body; the LED light bar is arranged around the key body; the analog-to-digital conversion ADC chip is connected with the pressure sensing assembly; the main control chip is connected with the ADC chip; the LED driving chip is respectively connected with the main control chip and the LED lamp strip, and the key feedback device is simple in structure, visual in key feedback and good in user experience. The utility model also provides an electronic equipment with this button feedback device.

Description

Key feedback device and electronic equipment

Technical Field

The utility model relates to an electronic control field especially relates to a button feedback device and have this button feedback device's electronic equipment.

Background

With the continuous improvement of the scientific and technological level and the living standard of people, electronic equipment increasingly enters the work and the life of people. In the using process, a user operates the electronic equipment through the panel, so that the electronic equipment can realize various functions. At present, a user operates a panel in a touch manner and is increasingly widely used.

The conventional touch key device of the electronic device executes a corresponding operation instruction through user touch, and has no function of key feedback, so that the user experience needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings, the present invention is necessary to provide a key feedback device with simple structure and capable of realizing operation feedback and an electronic device having the key feedback device.

A key feedback device comprising:

the touch key comprises a key body and a pressure sensing assembly, wherein the key body comprises a front surface for pressing touch and a bottom surface opposite to the front surface, and the pressure sensing assembly is connected to the bottom surface of the key body;

the LED light bar is arranged around the key body;

the analog-to-digital conversion ADC chip is connected with the pressure sensing assembly;

the main control chip is connected with the ADC chip;

and the LED driving chip is respectively connected with the main control chip and the LED lamp strip.

Preferably, the pressure sensing assembly includes a pressure sensor, and the pressure sensor is connected with the key body.

Preferably, the pressure sensing assembly comprises a bonding pad and a copper foil, the bonding pad is arranged on the bottom surface of the key body, the copper foil corresponds to the bonding pad, and the pressing action of the key body drives the bonding pad to be close to or far away from the copper foil.

Preferably, the key body is circular, and the LED light bar is correspondingly annular.

Preferably, the LED driving chip outputs a pulse width modulation PWM driving signal to the LED light bar.

Preferably, the ADC chip is connected to the main control chip via an inter-integrated circuit I2C bus.

Preferably, the LED driving chip is connected to the main control chip through an I2C bus.

An electronic device comprises a panel and a key feedback device, wherein the key body and an LED lamp bar are arranged on the panel.

The utility model discloses a button feedback device and electronic equipment through setting up LED lamp strip around the button body, and the pressure sensing subassembly receives the press signal according to the button body, and the ADC chip is digital signal with signal conversion, and main control chip lights LED lamp strip according to digital signal control LED driver chip drive, and simple structure has realized true audio-visual button feedback, and user experience is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a frame structure of a key feedback device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, an embodiment of the present invention provides a key feedback device 100 applied to an electronic device 200, wherein the electronic device 200 includes a panel 201, and the key feedback device 100 is disposed on the panel 201. Specifically, the panel 201 may be configured as a touch panel, and the key feedback device 100 is configured as a touch key structure on the panel 201. In other embodiments, the panel may be configured as a common panel, and the panel 201 is configured as a hollow area for accommodating the key feedback device 100.

Referring to fig. 2, the key feedback device 100 includes:

the touch key 10 includes a key body 11 and a pressure sensing element (not shown), the key body 11 includes a front surface for pressing touch and a bottom surface opposite to the front surface, and the pressure sensing element is connected to the bottom surface of the key body 11;

the LED light bar 20 is arranged around the key body 11;

the ADC chip 30 is connected with the pressure sensing assembly;

the main control chip 40 is connected with the ADC chip 30;

and the LED driving chip 50 is respectively connected with the main control chip 40 and the LED light bar 20.

In this embodiment, the key body 11 of the touch key 10 is actually a circular touch panel and is disposed in the panel 201, it can be understood that the structure of the touch key may be that the panel 201 is provided with an opening, the key body 11 is embedded in the opening of the panel 201, and the front surface of the key body 11 corresponds to the panel 201; it is also possible to arrange that the key body is actually integrated with the panel 201, the panel 201 is a glass panel, the key body is actually a part of a specific position of the panel 201, and other components of the key feedback device 100 are correspondingly arranged at the specific position. When the user applies a touch pressure to the key body 11, i.e., performs a touch operation on the key feedback device 100.

The pressure sensing assembly is used for detecting touch pressing actions of a user, and specifically detects signals such as voltage values, resistance values or capacitance values corresponding to different pressing forces of the user.

The LED light bar 20 is disposed on the panel 201 and disposed around the key body 11, it can be understood that an annular hollow area may be disposed at a position where the panel 201 surrounds the key body 11, and the LED light bar 20 is correspondingly disposed in the annular hollow area; alternatively, the panel 201 may be provided with an annular transparent area around the key body 11, for example, when the panel 201 is a glass panel, the LED light bar 20 may be disposed inside the panel 201 and surround the key body 11. The LED light bar 20 is used to light the key body 11 when touched by a user, so as to realize key feedback.

The ADC chip 30 is configured to perform analog-to-digital conversion on a detection signal of the pressure sensing module to form a digital detection signal. In this embodiment, the ADC chip 30 may adopt a chip CS1242 chip.

The main control chip 40 is configured to determine a key feedback instruction according to the digital detection signal of the ADC chip 30, in this embodiment, the key feedback instruction is actually determined according to the pressing force of the key body 11, for example, when the pressing force is larger, the display brightness of the LED light bar 20 is larger, that is, the feedback brightness of the LED light bar 20 is proportional to the touch pressing force of the key body 11; alternatively, the pressing force applied to the key body 11 is set to a plurality of sections, and the LED light bar 20 is set to a plurality of gradation brightness levels. Specifically, the master control chip 40 may employ a rake micro RK3326 chip.

The LED driving chip 50 is configured to generate a corresponding LED driving signal according to the key feedback instruction of the main control chip 40, so as to control the LED light bar 20 to be turned on. The LED driving chip 50 may employ an IS31FL3236A-QFLS2-TR chip.

Further, the pressure sensing assembly includes a pressure sensor (not shown) connected to the key body 11. The pressure sensor is used for sensing a pressure signal of the key body 11 and further converting the pressure signal into a resistance, voltage or capacitance signal to represent a corresponding pressure value.

In another embodiment, the pressure sensing assembly includes a pad (not shown) and a copper foil (not shown), the pad is disposed on the bottom surface of the key body, and the copper foil is disposed corresponding to the pad. Specifically, the copper foil sets up the one side of the pad back to the button body 11, the action of pressing according to the button body drives the pad is close to or keeps away from relatively the copper foil to realize the change of electric capacity between pad and the copper foil, and the different pressing force of representation.

Further, the key body 11 is circular, and the LED light bar 20 is correspondingly annular.

Further, the LED driving chip 50 outputs a pulse width modulation PWM driving signal to the LED light bar 20. The LED driving chip 50 generates PWM driving signals with different duty ratios to control the LED light bar 20 to light up and display different brightness.

Further, the ADC chip 30 is connected to the main control chip 40 via an I2C bus.

Further, the LED driving chip 50 is connected to the main control chip 40 through an I2C bus.

The utility model discloses a button feedback device 100 and electronic equipment 200, through setting up LED lamp strip 20 around pressing the key body 11, the pressure sensing subassembly receives the press signal according to key body 11, and ADC chip 30 converts signal into digital signal, and main control chip 40 lights LED lamp strip 20 according to the drive of digital signal control LED driver chip 50, and simple structure has realized true audio-visual button feedback, and user experience is good.

It is understood that the present invention is not limited to the above embodiments, and the present invention is not limited to the above embodiments.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A key feedback device, comprising:

the LED light bar is arranged around the key body;

the main control chip is connected with the ADC chip;

2. The key feedback device according to claim 1, wherein the pressure sensing assembly comprises a pressure sensor, the pressure sensor being coupled to the key body.

3. The key feedback device according to claim 1, wherein the pressure sensing assembly includes a pad and a copper foil, the pad is disposed on the bottom surface of the key body, the copper foil is disposed corresponding to the pad, and the pressing action of the key body drives the pad to move closer to or away from the copper foil.

4. The key feedback device according to claim 1, wherein the key body is configured in a circular shape, and the LED light bar is correspondingly configured in a ring shape.

5. The key feedback device of claim 1, wherein the LED driving chip outputs a PWM driving signal to the LED light bar.

6. The key feedback device of claim 1, wherein the ADC chip is connected to the main control chip via an I2C bus.

7. The key feedback device of claim 1, wherein the LED driving chip is connected to the main control chip via an I2C bus.

8. An electronic device, comprising a panel and the key feedback device according to any one of claims 1-7, wherein the key body and the LED light bar are disposed on the panel.