A capacitive touch screen operating handle

Abstract

The present invention provides a capacitive touch screen operating handle, which includes operation buttons, a controller, a digital-to-analog conversion and signal generation circuit, a transmitting end and a contact point that are electrically connected in sequence. The digital-to-analog conversion and signal generation circuit, the transmitting end and the contact point are arranged on an induction main board, the induction main board is placed in a rotary chuck, and the contact point protrudes from the rotary chuck. When the rotary chuck clamps the capacitive touch screen of a controlled device, the contact point will directly or indirectly contact the screen of the controlled device. When the operation button is pressed, a virtual touch signal will be generated on the contact point, imitating the touch action of a person. Since the contact point is made on the circuit board and the transmission line for the touch signal is cancelled, in addition to saving costs and reducing the production difficulty, due to the saving of the signal transmission from the circuit board to the contact point, the signal attenuation is eliminated, so that the signal is more stable and reliable, reducing the phenomena of malfunction and slow response, and the width of a single contact point can also be smaller than that of the prior art.

Description

Technical Field

[0001] The present invention relates to a capacitive touch screen operating handle. Background Art

[0002] With the popularization of smart devices, people spend more and more time operating capacitive touch screen devices every day. Especially now that mobile games are popular, there are many virtual buttons on the games, and players need to constantly perform fast and accurate touch screen operations, which is very inconvenient.

[0003] In the prior art, the methods for replacing manual touch screen operations include keyboard input, mouse input, and handle input, etc. For mobile terminals such as smart phones or tablet computers, the operation method of using handle input has certain advantages. Especially for game operations, using handle input can reduce the operation difficulty of the game and improve the playability.

[0004] Currently, most handle inputs adopt the operation method of passive capacitive touch screens. This method is equivalent to using metal or other conductive substances to conduct the electrothermal energy on the human hand to the terminal capacitive touch screen for operation. However, due to the weak human body signal, this method is prone to attenuation during the process of transmitting the human body signal, resulting in signal loss and operation failure. Although some solutions for amplifying the human body signal have been proposed in the prior art, the problem cannot be fundamentally solved.

[0005] For this reason, a solution for an active capacitive touch screen touch handle has been proposed, which uses a capacitive signal emission board to emit capacitive touch signals to the capacitive touch screen of the mobile terminal, imitating the touch click of the human hand to achieve touch operation. Since the signal is actively emitted, the signal is stronger.

[0006] However, there are still many problems with the existing active capacitive touch screen touch handles, such as frequent failures or slow responses. Summary of the Invention

[0007] The purpose of the present invention is to solve the problem that the capacitive touch screen touch handle in the prior art is prone to failure or slow response during operation, and to propose a capacitive touch screen operating handle.

[0008] To solve the above technical problems, the capacitive touch screen operating handle of the present invention includes an operation button, a controller, a digital-to-analog conversion and signal generation circuit, a transmitting end, and a contact point that are electrically connected in sequence. The digital-to-analog conversion and signal generation circuit, the transmitting end, and the contact point are arranged on an induction main board. The induction main board is placed in a rotating chuck, and the contact point protrudes from the rotating chuck. When the rotating chuck clamps the capacitive touch screen of the controlled device, the contact point will directly or indirectly contact the screen of the controlled device. When the operation button is pressed, a virtual touch signal will be generated on the contact point, imitating the touch action of a person.

[0009] In some embodiments, the following features are further included:

[0010] The digital-to-analog conversion and signal generation circuit includes a digital-to-analog conversion circuit, a signal generation circuit, a high-frequency signal generation circuit, and a high-frequency signal output circuit that are electrically connected in sequence.

[0011] It further includes a battery and a boost circuit for powering the circuit, a charging interface for charging the battery, and a battery protection circuit.

[0012] The transmitting end includes two types of contacts. One type is the transmitting contact for outputting signals, and the other type is the recycling contact for recycling signals. The capacitive touch screen operating handle further includes a signal recognition and recycling circuit. The recycling contact is connected to the signal recognition and recycling circuit, and the signal recognition and recycling circuit is then directly or indirectly connected to the controller.

[0013] There are at least two transmitting ends and operating buttons, and one transmitting end corresponds to one button.

[0014] It further includes a continuous firing frequency adjustment key, which is connected to the controller to receive the adjustment operation of the user and adjust the continuous firing frequency of the transmitting end to adapt to different specifications of the screen and achieve continuous firing at different frequencies.

[0015] An elastic clamping arm is provided on the rotary chuck.

[0016] The rotary chuck includes a rotary lower cover, an induction main board, and a rotary upper cover to form a clamping head; it further includes a plug pin and a torsion spring to form an elastic clamping arm; the clamping part is fixed to the outer shell of the capacitive touch screen operating handle through the elastic clamping arm.

[0017] It further includes a handle holding and operating part. There is a plug pin hole on the shell of the handle holding and operating part, and the plug pin is inserted into the plug pin hole to fix the torsion spring and the clamping head to the shell.

[0018] The torsion spring is a double torsion spring.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, the contacts are made on the circuit board, and the transmission line for touch signals is cancelled. In addition to saving costs and reducing production difficulty, since the signal transmission from the circuit board to the contacts is saved, signal attenuation is eliminated, so that the signal is more stable and reliable, and the phenomena of malfunction and slow response are reduced. Moreover, the width of a single contact in this embodiment can also be smaller than that of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic block diagram of the circuit of an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the circuit principle of an embodiment of the present invention.

[0022] Figure 3 This is an exploded perspective view of an embodiment of the present invention.

[0023] Figure 4 This is a perspective view of an embodiment of the present invention.

[0024] Figure 5 This is a sectional view of an embodiment of the present invention.

[0025] Figure 6A This is a schematic block diagram of a single-sided double-contact circuit of another embodiment of the present invention.

[0026] Figure 6B This is a schematic diagram of the principle of a single-sided double-contact circuit of another embodiment of the present invention.

[0027] Figure 7A This is a schematic block diagram of a double-sided double-contact circuit of still another embodiment of the present invention.

[0028] Figure 7B This is a schematic diagram of the principle of a double-sided double-contact circuit of still another embodiment of the present invention.

[0029] Figure 8 This is an exploded perspective view of the emitter clip part of yet another embodiment of the present invention.

[0030] Figure 9 This is an exploded sectional view of the emitter clip part of yet another embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of a torsion spring of an embodiment of the present invention.

[0032] In the figure, 1. pull rod; 2. pull rod silicone pad; 3. pull rod compression spring; 4. rear cover; 5. back button; 6. rear button; 7. upper main board; 8. top cover; 9. top button; 10. light guide column; 11. lower main board; 12. front cover; 13. main body silicone; 14. rotating lower cover; 15. silicone pad; 16. induction main board; 17. rotating upper cover; 18. pin; 19. torsion spring. Detailed implementation manners

[0033] The inventor of the present invention has found that the emission signal of the existing active capacitive touch screen touch handle is unstable, resulting in a malfunction problem; for the existing active capacitive touch screen touch handle, the signal output point is connected to the capacitive signal emission board through a wire, which is one of the reasons for the unstable signal; furthermore, since the active capacitive touch screen touch handle will emit signals to the touch screen, this will cause interference to the touch screen and also cause signal instability and operation malfunction to a certain extent. In this case, if it is necessary to achieve dozens of consecutive clicks per second, the effect will be even more unimaginable. In addition, if the two contacts are too close, there will be interference problems, so it is difficult to achieve multi-contact arrangement within a small size range.

[0034] Based on the above findings, the following embodiments of the present invention provide a capacitive touch screen operating handle, which, while solving the signal stability problem, increases sensitivity, reliability, and enables high-frequency rapid-fire, that is, it can achieve the operation of continuously triggering screen clicks after a long press, and can adjust the click speed (or frequency, i.e., the number of clicks per second).

[0035] Embodiment 1

[0036] In view of the cause analysis of the problems occurring in the prior art, in this embodiment, the connecting wire between the signal output point and the capacitive signal emitting plate is cancelled, and the contact is directly arranged on the circuit board (capacitive signal emission).

[0037] As Figure 1 shown, the circuit part of the capacitive touch screen operating handle in this embodiment includes an operation button ( "Button 1" in the figure), a controller, a digital-to-analog conversion circuit, a signal generation circuit, a high-frequency signal generation circuit, a high-frequency signal output circuit, a transmitting end, a contact, as well as a battery and a boost circuit for powering the circuit, a charging interface for the battery charging circuit, and a battery protection circuit, which are connected in sequence.

[0038] Figure 2 is the circuit schematic diagram of this embodiment. Among them, the digital-to-analog conversion and signal generation circuit corresponds to Figure 1 the digital-to-analog conversion circuit, signal generation circuit, high-frequency signal generation circuit, and high-frequency signal output circuit in

[0039]

[0040] Figure 3 4 Among them, the digital-to-analog conversion circuit is used to analogize the digital signal of the controller, the signal generation circuit is used to generate operation signals such as square waves with a specific frequency according to the control signal, the high-frequency signal generation circuit is used to generate high-frequency signals that can be sensed by the screen of the controlled device according to the signal of the signal generation circuit so as to simulate the operation of a human hand. The signal sent by the signal generation circuit is modulated in the frequency modulation signal, and after the controlled device senses this signal, it will be interpreted as the touch operation of a human hand. The controller (main control) provides a PWM signal to achieve the continuous firing function, so that the function of a human hand clicking the screen multiple times can be simulated. 4, 5 are respectively the three-dimensional exploded view, three-dimensional view, and three-dimensional sectional view of the physical product of this embodiment. In this embodiment, the digital-to-analog conversion circuit, signal generation circuit, high-frequency signal generation circuit, high-frequency signal output circuit, transmitting end, and contacts are all arranged on the induction main board 16. The induction main board is placed in the cavity between the rotating upper cover 17 and the rotating lower cover 14, jointly forming a rotating chuck. The contacts protrude from the rotating chuck. When the rotating chuck clamps the capacitive touch screen of the controlled device to be touched (such as a mobile phone screen), the contacts will directly or indirectly contact the screen of the controlled device (such as through a protective film). When the operation button is pressed, virtual touch signals will be generated on the contacts, imitating the touch actions of a person. The rotating chuck is rotatably installed on the handle holding and operating part.

[0041] In this embodiment, the operation of simulating a human hand clicking on the screen is controlled by circuit board components and the main controller, improving the operation experience. The principle is to convert the battery current into an electrical signal that the screen can recognize, simulating a finger clicking on the capacitive touch screen.

[0042] In the present invention, the contacts are made on the PCB board (i.e., the induction main board 16). In addition to saving costs and reducing production difficulty, since the signal transmission from the circuit board to the contacts is saved, signal attenuation is eliminated, making the signal more stable and reliable, and reducing the phenomena of malfunction and slow response.

[0043] After making the contacts on the PCB board, the PCB board must be arranged close to the contacts, that is, it needs to be arranged on the rotating chuck. This may cause the rotating chuck to be too large in volume. For this reason, in this embodiment, the low-frequency circuit part is made on the upper main board 7 and the lower main board 11 (including the power supply part, controller (main control), boost circuit, indicator light, frequency adjustment circuit, etc.), and the PCB board where the contacts are located is only the induction main board 16 part, and only the high-frequency circuit part is on it. The upper main board 7 and the lower main board 11 are arranged at the part outside the rotating chuck (such as inside the shell of the handle holding and operating part). In this way, the volume of the rotating chuck will not be too large. In fact, due to good signal strength, small attenuation, and less interference, the width of a single contact in this embodiment can even be smaller than that of the prior art - the prior art can only achieve a minimum of 5 mm, while this embodiment can achieve only 3 mm.

[0044] Its control principle is: when the switch on the circuit board is pressed, the battery generates current, and the circuit board converts the battery current into an electrical signal that the screen can recognize through electronic components such as capacitors and resistors on the circuit board and transmits it to the contacts that are in physical contact with the screen, thereby achieving the effect of simulating a finger click.

[0045] Its control method is as follows:

[0046] The first step: Install the device on the capacitive touch screen so that the transmitting end contacts the virtual button on the screen that needs to be controlled.

[0047] Step 2: Press the physical button, and the battery outputs current.

[0048] Step 3: The circuit board generates, through corresponding circuits, signals that can be sensed by the capacitive touch screen from the current and transmits them to the transmitting end of the sensing area. The circuit can be implemented using an IC. The control program of the IC identifies the frequency of the electrical signals that need to be simulated and determines the position on the transmitting end of the output terminal to which the current needs to be transmitted, and transmits it to the circuit board of the output terminal. The resistor and capacitor components on the circuit board of the output terminal process the received current by controlling the current and voltage, convert the current into electrical signals recognizable by the device to be operated, and concentrate them at the corresponding transmitting ends on the circuit board of the output terminal;

[0049] Step 4: The transmitting end in contact with the screen (physical contact, direct or indirect contact is acceptable) transmits the signal to the corresponding virtual button on the capacitive touch screen, thus realizing the click operation.

[0050] Among them, the contact position of the transmitting end in contact with the screen should be located at the position of the button on the screen that needs to be operated. This position is set according to different operation requirements. For example, in mobile games, usually players can set the button positions by themselves in the game. After setting, just align the transmitting contact on the rotating chuck with this button position and then clamp the screen.

[0051] Embodiment 2

[0052] To further improve the operation stability and reduce the reaction lag, this embodiment proposes a technical solution with two contacts, that is, the transmitting end includes two contacts: one for outputting signals and one for recycling signals, as Figure 6A 、 6B shown, adding a signal recognition and recycling circuit and its contacts (contact four in the figure).

[0053] Through contact four and its subsequent circuits, a loop of the screen and the subsequent circuits is formed, thereby recycling the stray current formed by contact three. In this way, the induction area formed at the transmitting end contact can prevent the output signal from remaining on the screen and causing interference, thus avoiding the touch control failure caused by interference to the screen; on the other hand, the recycled circuit can be sent to the main controller for identification and judgment, so as to identify whether the signal transmission of contact three meets the requirements, and thus correct the signals generated by the digital-to-analog conversion and signal generation circuits.

[0054] Embodiment 3

[0055] As Figure 7A 、 7BAs shown in the figure, in this embodiment, based on the dual-contact solution, it is changed to bilateral dual contacts (a total of four contacts, divided into two groups, one group on each side), adding Contact One and Contact Two in the figure; correspondingly, a Button One is also added to the button. In this way, this embodiment has two transmitters and two buttons, which can respectively correspond to the left and right hands of a person for operation. This can adapt to more two-handed operation combinations. Since usually players can set the button positions by themselves in the game, although the relative positions of the two transmitters in this embodiment are fixed, it will not actually affect the use.

[0056] There is another advantage in setting the two transmitters on the same circuit board, that is, the distance between the contacts between the two transmitters can be controlled. Especially, we can shorten the contact distance more than the prior art. In the prior art, the distance cannot be shortened by using a flexible cable. Because if a contact distance of 3 mm is to be made, the maximum width of the flexible cable can only be 3 mm, and it is very difficult to solder a flexible cable of this width on the circuit board, the production cost will increase a lot, and the defective rate will increase, and it is not firmly soldered and will break with a fold. Therefore, in this embodiment, by canceling the connecting wire between the signal output point and the capacitive signal emitting board, the contact distance can be reduced.

[0057] Another reason for this result is that the wires in the prior art cause signal attenuation. In order to increase the sensitivity, the induction area has to be increased; in addition, the resulting soldering also causes process complexity and an increase in the contact area. In the prior art, too large contact areas will interfere with each other.

[0058] This embodiment does not have this problem. This embodiment can ensure accuracy in control with small contacts on the premise of ensuring sensitivity, and can avoid interference.

[0059] It should be noted that although this embodiment has four contacts at both ends, theoretically, we can continue to increase the buttons and the corresponding contacts.

[0060] Embodiment Four

[0061] This embodiment adds a continuous firing frequency adjustment button to be applicable to different specifications of screens and achieve continuous firing at different frequencies.

[0062] Since this embodiment adopts an active touch signal generation mechanism and actively generates a signal simulating a human hand touch through a high-frequency oscillator, this makes "continuous firing" possible. The so-called continuous firing means that the user only needs to operate the button once, and the transmitter can generate a simulated effect of multiple clicks on the screen, such as firing 30 times per second, simulating 30 click operations. In this way, during the game process, the click speed of the user operation is greatly increased, enhancing the user experience.

[0063] Since different screens have different performances, not every screen can support the highest frequency of clicks. Therefore, in this embodiment, a third button is added and connected to the controller for adjusting the continuous firing frequency. Multiple selectable continuous firing frequencies are pre-stored in the controller and can be selected by operating the third button.

[0064] Embodiment Five

[0065] In this embodiment, the rotating chuck is provided with elastic clamping arms to adapt to touchscreens of different thicknesses.

[0066] As Figure 8 、 9 shown and referring to Figure 3 , the rotating chuck includes: a rotating lower cover 14, a silica gel pad 15, an induction main board 16, a rotating upper cover 17, a plug pin 18, and a torsion spring 19. Among them, the rotating lower cover 14, the silica gel pad 15, the induction main board 16, and the rotating upper cover 17 together form a chuck part, and the induction main board 16 has a transmitting end and contacts. Parts 1-13 form a handle holding and operating part, which is enclosed by a rear cover 4, a front cover 12, and a top cover 8 to form a housing. The plug pin 18 and the torsion spring 19 form an elastic clamping arm.

[0067] A plug pin hole is provided on the front cover 12, and the plug pin 18 is inserted into the hole to fix the torsion spring 19 and the chuck part to the front cover 12. Thus, the chuck part can generate an elastic restoring force under the action of the torsion spring 19 to clamp touchscreens of different thicknesses.

[0068] Since the elastic clamping arm of this embodiment is provided outside the housing, that is, neither inside the housing of the chuck part nor inside the housing of the holding part, but exactly at the connecting part between the two, the torsion spring 19 does not need to be placed in a recess during installation, so it is convenient for installation and disassembly.

[0069] In addition, in order to adapt to the characteristics of double-ended double contacts in this embodiment, the torsion spring 19 of this embodiment is a double torsion spring, as shown in the figure.

[0070] The embodiments of the present invention have the following advantages:

[0071] 1. The signal transmitting end is integrated on the circuit board, and there is no need to connect the transmitting end and the output end through wires or other wired forms. The transmission distance of the signal is reduced, the loss of the signal during transmission is reduced, the sensitivity is improved, the intensity of the signal is enhanced, and the reliability of the device is enhanced.

[0072] 2. Two signal transmitting ends are integrated on the same circuit board, which is beneficial to fixing the distance between the two signal transmitting ends, solving the problem of signal interference with each other, reducing the production cost of the product and the manufacturing process at the same time. Compared with existing products, adding a transmitting end increases the diversity of use and operation.

[0073] 3. The length and width of the two contacts at the signal transmitting end are reduced, improving the accuracy and sensitivity of signal transmission. Analog touch screen operation can be achieved with a smaller space volume, while reducing the occupied space on the circuit board and improving the space utilization rate of the circuit board.

[0074] 4. The signal transmission and recovery mechanism at the signal transmitting end ensures the stability of the function while avoiding signal interference.

[0075] 5. It uses physical direct or indirect contact with the device to be operated, without the need for wired or wireless connection with the device to be operated. As long as the transmitting end makes direct or indirect physical contact with the device to be operated, the convenience of product use is improved and the complexity of installation for users is reduced.

[0076] 6. The continuous firing frequency of the adjustable continuous firing signal is used to generate trigger signals of different frequencies, which can adapt to different device screens and greatly improve the compatibility.

[0077] 7. The size of the contacts at the transmitting end is greatly reduced, making the signal transmission more focused and accurate.

[0078] 8. The usage steps are simplified, making the product easier to use by users. The difficulty of getting started is reduced.

Claims

1. A capacitive touch screen operating handle, characterized in that, it includes an operation button, a controller, a digital-to-analog conversion and signal generation circuit, a transmitting end and a contact point that are electrically connected in sequence. The digital-to-analog conversion and signal generation circuit, the transmitting end and the contact point are arranged on an induction main board. The induction main board is placed in a rotating chuck, and the contact point protrudes from the rotating chuck. When the rotating chuck clamps the capacitive touch screen of the controlled device, the contact point will directly or indirectly contact the screen of the controlled device. When the operation button is pressed, a virtual touch signal will be generated on the contact point to imitate the touch action of a person; the transmitting end includes two types of contact points. One type is a transmitting contact point for outputting signals; the other type is a recycling contact point for recycling signals. The capacitive touch screen operating handle also includes a signal recognition and recycling circuit. The recycling contact point is connected to the signal recognition and recycling circuit, and the signal recognition and recycling circuit is then directly or indirectly connected to the controller; both the transmitting end and the operation button have at least two, and one transmitting end corresponds to one button.

2. The capacitive touch screen operating handle according to claim 1, characterized in that, the digital-to-analog conversion and signal generation circuit includes a digital-to-analog conversion circuit, a signal generation circuit, a high-frequency signal generation circuit, and a high-frequency signal output circuit that are electrically connected in sequence.

3. The capacitive touch screen operating handle according to claim 1, characterized in that, it further includes a battery and a boost circuit for supplying power to the circuit, a charging interface for charging the battery, and a battery protection circuit; the boost circuit, the battery protection circuit and the controller are arranged in a handle holding and operating part; the rotating chuck is rotatably installed on the handle holding and operating part.

4. The capacitive touch screen operating handle according to claim 1, characterized in that, it further includes a continuous firing frequency adjustment key, which is connected to the controller to receive the adjustment operation of the user and adjust the continuous firing frequency of the transmitting end to adapt to different specifications of the screen and achieve continuous firing at different frequencies.

5. The capacitive touch screen operating handle according to claim 3, characterized in that, elastic clamping arms are arranged on the rotating chuck.

6. The capacitive touch screen operating handle according to claim 5, characterized in that, the rotating chuck includes a rotating lower cover, an induction main board, and a rotating upper cover to form a clamping head part; it also includes a plug pin and a torsion spring to form elastic clamping arms; the clamping part is fixed to the outer shell of the capacitive touch screen operating handle through the elastic clamping arms.

7. The capacitive touch screen operating handle according to claim 6, characterized in that, a plug pin hole is provided on the shell of the handle holding and operating part, and the plug pin is inserted into the plug pin hole to fix the torsion spring and the clamping head part to the shell.

8. The capacitive touch screen operating handle according to claim 6, characterized in that, the torsion spring is a double torsion spring.

Images