CN212647418U - Combined information input equipment - Google Patents

Abstract

A combined information input device comprising a composite assembly (2), a control assembly (3), a power supply assembly (5) and a transceiver assembly (4) located in a housing (1), wherein the composite assembly (2) comprises the following layers: the key structure comprises a bottom substrate (13), a keyboard diaphragm (12), a sensor (11), a key film (10), a glue layer (9), a keyboard shear fixing layer (8), a keyboard shear (7) and a key cap (6), wherein the sensor layer is positioned on the keyboard diaphragm layer and is connected with the keyboard shear fixing layer through the glue layer, all layers are provided with concentric holes (16), a first row is formed by a first electrode positioned on the upper layer of the sensor along the wide edge of the keyboard, and the first row is electrically connected with the lower layer of the sensor; and the second row is formed by the second electrodes located on the upper layer of the sensor along the narrow side of the keyboard together with the electrical connection lines. The utility model discloses make the keyboard assembly fast, the rejection rate is low, and is simple to use and reliable.

Description

Combined information input equipment

Technical Field

The present invention relates generally to electronic devices and more particularly to input devices such as keyboards for transmitting data to be converted into a form suitable for machining in a computer.

Background

A typical keypad includes movable keys that a user can press with a finger or other object. Some devices have a touch screen that can display a virtual keyboard, and the user can select individual keys of the virtual keyboard by simply pressing the portion of the touch screen that is intended for the letter, symbol, function. The top side of the touch screen may be flat and featureless, thus occupying less space than a mechanical keyboard, but requiring the user to visually determine the placement of the keys and tactilely determine the process of pressing the keys, which facilitates rapid printing. In addition to saving space (no additional devices such as a mouse, a touch pad, etc. are needed), no hands are required to be taken from the touch keyboard, and work can be accelerated.

Mechanical keyboards with touch pad functionality are known for personal computers, smart phones, multimedia phones, and the like. In the mechanical keypad, the function of the touch pad can be performed by touching the flat upper surface of the touch keypad made of a lower film. The keyboard made of the film has the characteristics that: there are layers made of aluminum foil or rubber between the keys of the general keyboard or the keys with printed pictures, and there are capacitive touch structures. In other words, when a finger presses the surface of a key, the touch panel is executed^[1]The function of (c). The disadvantage of this device is that the touch panel has limited resolution and the finished product is difficult to manufacture, assemble and disassemble.

Known input interface device^[2]Includes a text input assembly having a plurality of physical keys; the input member for the position data of the index activates a motion detection area formed parallel to the upper surface of the physical key and recognizing information related to the position of the pointer when the user is in the motion detection area, while the position indicator represents the position of the index on the digital deviceAccess to the device through a wired or wireless connection; the state conversion component is used for activating the state of the input mark position; there is also a communication assembly which transmits information relating to the position of the indicia to the digital device, and an input assembly for data relating to the position of the indicia has a reflector or absorber for the light signal which is located above the physical keys, i.e. around the first to third faces of the text input assembly, and a state transition assembly on the fourth face of the text input assembly. The disadvantage of this device is that for activating the touch state indicated by the target, special keys of the state transition member are pressed, which is cumbersome for the user and the resolution of the touch pad is limited.

SUMMERY OF THE UTILITY MODEL

The object of the present application is to provide a simple solution to the keyboard with sensors, without the limitation of the resolution of the touch panel, so that the keyboard can be assembled very quickly under factory conditions with low scholarly workers' efforts, with a low rejection rate, simple and reliable use.

The object of the application is achieved by a combined information input device comprising a composite assembly, a control assembly, a power assembly and a transceiver assembly in a housing, wherein the composite assembly comprises the following layers: the keyboard comprises a bottom substrate, a keyboard diaphragm, a sensor, a key film, a glue layer, a keyboard shear fixing layer, a keyboard shear and a keycap, wherein the sensor layer is positioned on the keyboard diaphragm layer and is connected with the keyboard shear fixing layer through the glue layer, all the layers are provided with concentric holes, a first row is formed by a first electrode positioned on the upper layer of the sensor along the width edge of the keyboard, and the first row is electrically connected with the lower layer of the sensor; and the second row is formed by the second electrodes located on the upper layer of the sensor along the narrow side of the keyboard together with the electrical connection lines.

Drawings

FIG. 1 is a block diagram of a combined information input device of the present application;

FIG. 2 is a schematic diagram of a composite component of the combined information input device;

FIG. 3 is a schematic diagram showing a sensor of the combined information input device;

FIG. 4 is a schematic diagram of a first electrode of a sensor of the combined information input device;

FIG. 5 is a schematic diagram of a second electrode of a sensor of the combined information input device;

FIG. 6 is a schematic view of a combined information input device;

FIG. 7 is a schematic view of a bottom substrate of the combined information input device;

fig. 8 is a schematic diagram of a keypad membrane of a combination information input device.

List of reference numerals

1-shell

2-composite assembly

3-control assembly

4-transceiver assembly

5-Power supply Module

6-keyboard key cap layer

7-layer of keyboard scissors

8-keyboard scissors fixing layer

9-glue layer

10-key film layer

11-sensor

12-keyboard Membrane layer

13-bottom substrate

14-matrix of first electrodes of sensor

15-matrix of second electrodes of sensor

16-concentric bore

Detailed Description

As shown in fig. 1 to 3, the combination information input device includes a housing 1 having a composite component 2, a control component 3, a transceiver component 4, and a power supply component 5 therein. The composite component 2 comprises a keyboard key cap layer 6, a keyboard scissor layer 7, a keyboard scissor fixing layer 8, a glue layer 9, a key thin film layer 10, a sensor 11, a keyboard membrane layer 12 and a bottom substrate layer 13. The first electrode 14 is disposed along the broad side of the sensor, but the second electrode 15 is disposed along the narrow side of the sensor. Each layer has concentric holes 16.

The working principle of the above-mentioned combined information input device is that in the normal keyboard state, one or several key caps of the keyboard key cap layer 6 are pressed, the control component 3 processes the information and then sends out the corresponding symbols as an electrical sequence to the receiving device via the transceiver component 4.

When the touch pad is in a touch pad state, the combined information input device receives symbols of fingers moving on the keyboard key cap layer through the keyboard key cap layer 6 and the sensor 11, and the movement of the fingers is processed in the control component 3 and then sent to the receiving device through the transceiver component.

Industrial implementation of the combined information input device is shown in fig. 4 to 8.

Example of the operation of the combined information input device: all keys of the keyboard key cap layer are movable. The sensor is located under the keyboard key cap layer. All layers above the sensor have no metal parts. The keypad membrane layer, along with the control assembly, records the depression of each key cap layer key. All components and layers of the device are connected together in a unitary structure. The sensor may be a capacitive sensor, which and the control assembly are adapted to find the position or movement of at least one finger (or a specific device such as a capacitive pen). Since the membrane of the keyboard is below the sensor, concentric holes are provided for the device to function properly. The sensor has a matrix of first transmit electrodes and second receive electrodes formed in a diamond pattern in a staggered blasthole arrangement. Except for the first and last electrodes in a row or column, they take the form of half of a diamond. Such an arrangement of the transmitting and receiving electrodes increases the scanning frequency of the sensor. In this way, the keyboard function and the processing of the touch panel are performed simultaneously, and a continuous processing of the keys and the sensitive layer pressing can be used. The control component is responsible for processing data from the keypad membrane layer and the sensors. The control assembly consists of a processor and a sensor, the processor scans the membrane of the keyboard, and the sensor processes the received data and transmits the data to the receiver.

When the key layer of the keyboard is pressed, the pressing action is transmitted to the silicone bell-shaped piece with the hammer head below due to the pressure on the key cap of the key. When deformed, the silicone bell presses its own hammer against the layer of keyboard membrane, i.e. at least one of the insulator layers on which the conductive pattern is drawn, while the transmission line and the receiving line are separated. The hammer head of the silicone bell makes the transmission line and the receiving line contact when pressed. The control assembly scans the keyboard membrane layer, sends signals to the transmission lines in turn and checks the signals of the receiving lines. It transmits signals to the transmission lines of the keypad membrane layer. When not pressed, no signal is transmitted on the receive line. When the transmission line of the keyboard diaphragm is connected with the key of the receiving line, the control assembly designates the signal on the receiving line. The control component then processes the received signal to remove false activations. According to the arrangement of keys on the key layer and the membrane layer on the keyboard, the control component identifies the pressed keys, generates corresponding signals and then sends the signals to the receiving equipment through the data transmission channel. When the user releases the keys, the silicone bell is actuated as a snap mechanism (spring) and the bell separates the transmission and receive lines of the keyboard membrane while the control assembly scans and records changes in the receive lines.

The control module scans the touch sensitive sensors, which are a matrix of connected electrodes between them, which form the transmission and reception channels. To work, the sensor and control assembly use capacitive projection technology. The control assembly is calibrated before operation. The control assembly scans a matrix of sensors. It sends the signal to the transmission channel. An electromagnetic field is formed around the transmitting electrode to steer the receiving electrode. The control component records the signal layer as a calibration on the receiving electrode. In an operating state, when a user moves a finger on the surface of the key layer of the keyboard, the signal layer at the touch point on the receiving electrode changes accordingly. The control component records the changes in the signals, compares and processes them with the calibration data, generates an order that is understandable to the receiving device, and transmits them to the data channel.

The control assembly is programmed to intuitively switch the operational state of the keyboard. The user does not need to perform another action in order to switch the states of the keyboard and the touchpad, and the system can select the corresponding state by recognizing the performed action. When the user presses the key, the control component processes the action. In accordance with the logic of the program, if there is an erroneous press, the control component processes it and does not send data to the receiving device. When the user deliberately presses a key, the control unit registers the presses, locks the signal from the sensitive sensor and sends only the signal of the corresponding key to the transmission device. If the control component records short-term actions on the keys that do not conform to the model of managing the touchpad, the component locks them and does not send them to the transmitting device to manage the signal.

Reference to the literature

German patent application DE102010012969(a 1);

US patent US 9612668.

Claims (5)

1. A combined information input device, characterized in that it comprises a composite component (2), a control component (3), a power supply component (5) and a transceiver component (4) in a housing (1), wherein the composite component (2) comprises the following layers: the key structure comprises a bottom substrate (13), a keyboard diaphragm (12), a sensor (11), a key film (10), a glue layer (9), a keyboard shear fixing layer (8), a keyboard shear (7) and a key cap (6), wherein the sensor layer is positioned on the keyboard diaphragm layer and is connected with the keyboard shear fixing layer through the glue layer, all layers are provided with concentric holes (16), a first row is formed by a first electrode positioned on the upper layer of the sensor along the wide edge of the keyboard, and the first row is electrically connected with the lower layer of the sensor; and the second row is formed by the second electrodes located on the upper layer of the sensor along the narrow side of the keyboard together with the electrical connection lines.

2. A combination information input device according to claim 1, wherein the keypad assembly comprises a plurality of keys and has at least one control assembly designed to register the pressing of at least one key, each key being movable to act on the keypad membrane layer and comprising a respective key cap and sensor layer.

3. A combined information input device according to claim 1, wherein the sensor layer is a matrix of receiving and transmitting channels formed by electrodes interconnected by wires.

4. A combined information input device as claimed in claim 1, wherein the layer of keypad film is in the form of at least one dielectric substrate with a printed pattern of conductive lines.

5. A combination information input device according to claim 1, wherein said control assembly includes at least one processor for scanning the keypad film layer and/or the sensor layer and processing the received data and transmitting the data to a receiving means.

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