Joystick and electronic device

Abstract

This application relates to the field of electronic modules and discloses a joystick and an electronic device. The joystick in this application includes: an operation unit, a detection unit, and a circuit board; the detection unit includes: a transmitter plate and a receiver plate disposed on the circuit board, and a metal plate disposed on the operation unit; the operation unit rotates relative to the circuit board, and the metal plate rotates synchronously with the operation unit; a chip is also integrated on the circuit board; the transmitter plate and the receiver plate are connected to the chip, and the chip determines the rotation angle of the operation unit based on the capacitance signals generated by the transmitter plate, the receiver plate, and the metal plate. Integrating the chip onto the joystick's circuit board improves the integration of the joystick's angle detection function. In the event of a malfunction in the angle detection function, replacing the joystick module allows for simple troubleshooting without affecting other functions of the electronic device and without requiring fault location, thus improving troubleshooting efficiency.

Description

Technical Field

[0001] This application relates to the field of electronic modules, and more particularly to a joystick and electronic device. Background Technology

[0002] Joysticks, as a common electronic module, are widely used in production and daily life, such as push rods in medical equipment, gear levers in vehicles, and joysticks in game design. During use, joysticks require sensors to detect their rotation angle, and the signals detected by the sensors are transmitted to an external chip. The external chip then determines different rotation angles and outputs control signals corresponding to those angles.

[0003] However, the above-mentioned joystick control method has at least the following problems: Since the external chip is located within the electronic device where the joystick is installed, the external chip and the joystick are two independent components. Furthermore, besides determining the rotation angle and outputting control signals, the external chip also needs to process other signals to reduce costs. This means that if the joystick's rotation angle calculation function malfunctions, both the joystick and the external chip in the electronic device need to be replaced, making the operation complex. Utility Model Content

[0004] The purpose of this application is to provide a joystick and electronic device that integrates a chip onto the joystick's circuit board, thereby improving the integration of the joystick's angle detection function and facilitating troubleshooting by replacing the module in case of a malfunction in the angle detection function.

[0005] To address the aforementioned technical problems, embodiments of this application provide a joystick, comprising: an operation unit, a detection unit, and a circuit board; the detection unit includes: a transmitting electrode and a receiving electrode disposed on the circuit board, and a metal sheet disposed on the operation unit; the operation unit rotates relative to the circuit board, and the metal sheet rotates synchronously with the operation unit; a chip is also integrated on the circuit board; the transmitting electrode and the receiving electrode are connected to the chip, and the chip determines the rotation angle of the operation unit based on the capacitance signals generated by the transmitting electrode, the receiving electrode, and the metal sheet.

[0006] Embodiments of this application also provide an electronic device, including the aforementioned joystick.

[0007] Compared to related technologies, the joystick in this embodiment includes an operation unit, a detection unit, and a circuit board. The operation unit rotates relative to the circuit board based on external operation. The detection unit includes a transmitting plate and a receiving plate disposed on the circuit board, and a metal plate disposed on the operation unit. The metal plate rotates synchronously with the operation unit and together with the transmitting and receiving plates, forms a capacitor. When the metal plate rotates, the capacitance signal generated by the capacitor changes accordingly. A chip integrated on the circuit board receives this capacitance signal and determines the rotation angle of the operation unit based on the capacitance signal. Because the chip is integrated on the circuit board, in the event of a malfunction in the angle detection function, replacing the joystick's angle detection module can easily resolve the joystick angle detection fault without affecting other functions of the electronic device and without requiring fault location, thus improving fault resolution efficiency and reducing the number of components replaced to solve the fault.

[0008] In addition, the circuit board includes: a plurality of electrical connection portions; the electrical connection portions are connected to the chip, and the electrical connection portions are at least used to transmit the rotation angle sent by the chip.

[0009] In addition, the electrical connection portion is specifically a pin; the circuit board also includes a reinforcing portion; the reinforcing portion is located on the back of the circuit board, the pin is located on the front of the circuit board, and the projection of the reinforcing portion toward the pin covers the pin.

[0010] In addition, the electrical connection part is specifically a pin, which is fixed to the circuit board by riveting.

[0011] Additionally, the operating unit includes: a first rocker arm and a second rocker arm; the rotation direction of the first rocker arm is perpendicular to the rotation direction of the second rocker arm; the transmitting electrode includes: a first electrode and a second electrode; the receiving electrode includes: a third electrode and a fourth electrode; the metal sheet includes: a first floating electrode and a second floating electrode; when the first rocker arm rotates, the capacitance signals generated by the first electrode, the third electrode, and the first floating electrode change accordingly; when the second rocker arm rotates, the capacitance signals generated by the second electrode, the fourth electrode, and the second floating electrode change accordingly; the circuit board is a flexible circuit board, which is bent to form a first surface and a second surface that are perpendicular to each other, and a bent surface connecting the first surface and the second surface; the first electrode and the third electrode are jointly disposed on one of the first surface and the second surface, and the second electrode and the fourth electrode are jointly disposed on the other of the first surface and the second surface.

[0012] In addition, the joystick also includes a protective cover; the protective cover covers the periphery of the circuit board; the protective cover includes an opening; the position of the opening is consistent with the position of the chip.

[0013] In addition, the control lever also includes: a first protective cover and a second protective cover; the first protective cover covers the first surface, and the second protective cover covers the second surface; the first protective cover includes: a first gap; the second protective cover includes: a second gap; the bending surface passes through the first gap and the second gap, and the bending surface is outside the first protective cover and the second protective cover.

[0014] In addition, the circuit board includes: a plurality of electrical connection portions; the electrical connection portions are disposed on the first surface and / or the second surface.

[0015] In addition, there are multiple receiving electrodes, and the multiple receiving electrodes are arranged around the transmitting electrode; the metal sheet includes a first pattern arranged opposite to the transmitting electrode and a second pattern arranged opposite to the receiving electrode; wherein, when the operating unit rotates relative to the circuit board, the relative area between the first pattern and the transmitting electrode remains unchanged, while the relative area between the second pattern and at least one receiving electrode changes. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 This is a partial structural diagram of a joystick according to an embodiment of the present solution; Figure 2 This is a schematic diagram of the structure of a joystick detection unit according to an embodiment of the present solution; Figure 3 This is a schematic diagram of the structure of a joystick chip according to an embodiment of this solution; Figure 4 This is a three-dimensional structural diagram of a joystick according to an embodiment of this solution; Figure 5 This is a three-dimensional structural diagram of a joystick according to an embodiment of this solution; Figure 6 This is a structural schematic diagram of the pin configuration of the electrical connection part of a joystick according to an embodiment of this solution; Figure 7 This is a structural schematic diagram of the electrical connection pin configuration of a joystick according to an embodiment of this solution; Figure 8 This is an exploded view of a joystick according to an embodiment of this solution; Figure 9 This is a cross-sectional structural diagram of a joystick according to an embodiment of this solution; Figure 10 This is a structural schematic diagram of the first pattern of the transmitting electrode and the second pattern of the receiving electrode in a joystick according to an embodiment of this solution; Figure 11 This is a schematic diagram of the combined structure of the transmitting electrode plate, the receiving electrode plate, and the metal sheet in a joystick according to an embodiment of this solution; Figure 12 This is a schematic diagram of the equivalent structure of the transmitting electrode, receiving electrode, and metal sheet in a joystick according to an embodiment of this solution; Figure 13 This is a schematic diagram showing the change of the first capacitor C1 in a joystick with the rotation angle according to an embodiment of this solution; Figure 14 This is a schematic diagram showing the change of the second capacitor C2 in a joystick with the rotation angle according to an embodiment of this solution; Figure 15 This is a schematic diagram of the structure of the transmitting electrode plate, receiving electrode plate, and metal sheet on the circuit board of a joystick according to an embodiment of this solution; Figure 16 This is another structural schematic diagram of the second pattern of the receiving electrode plate in a joystick according to an embodiment of this solution; Figure 17 This is a schematic diagram of another structure of the detection unit in a joystick according to an embodiment of the present solution; Figure 18 This is a schematic diagram of the combined structure of the first protective cover, the second protective cover, and the circuit board in a joystick according to an embodiment of this solution; Figure 19 This is a schematic diagram of the structure of the first protective cover in a control lever according to an embodiment of this solution; Figure 20 This is a schematic diagram of the structure of a protective cover in a joystick according to an embodiment of this solution; Figure 21 This is a three-dimensional structural diagram of a joystick according to an embodiment of this solution.

[0018] Figure label: 1-Operating unit; 11-Joystick; 12-Slide plate; 131-First rocker arm; 132-Second rocker arm; 141-First support member; 142-Second support member; 2-Detection unit; 21-Emitting electrode; 22-Receiving electrode; 23-Metal sheet; 231-First floating electrode; 232-Second floating electrode; 3-Circuit board; 31-Reinforcing part; 321-First protective cover; 322-Second protective cover; 323-Opening; 324-First gap; 325-Protective cover; 4-Chip; 5-Electrical connection part; 61-Outer shell; 62-Base; 63-Shaft pin; 64-Spring; 7-Buttons. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0020] The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0021] Embodiments of this utility model relate to a joystick, such as Figures 1 to 4 As shown, Figure 1 This is a partial structural diagram of the joystick, including: operation unit 1 and detection unit 2. Figure 2 As shown, the detection unit includes: an emitting electrode 21 and a receiving electrode 22 disposed on a circuit board, and a metal sheet 23 disposed on the operation unit 1; as Figure 3 As shown, the joystick also includes a circuit board 3 and a chip 4 integrated on the circuit board 3. The operating unit 1 rotates relative to the circuit board 3, and the metal plate 23 rotates synchronously with the operating unit 1; the circuit board 3 also integrates the chip 4; the transmitting electrode 21 and the receiving electrode 22 are connected to the chip 4, and the chip 4 determines the rotation angle of the operating unit 1 based on the capacitance signals generated by the transmitting electrode 21, the receiving electrode 22, and the metal plate 23. Figure 4 The diagram shown is a three-dimensional structural schematic of the joystick.

[0022] Compared to related technologies, the joystick in this embodiment includes an operation unit, a detection unit, and a circuit board. The operation unit rotates relative to the circuit board based on external operation. The detection unit includes a transmitting plate and a receiving plate disposed on the circuit board, and a metal plate disposed on the operation unit. The metal plate rotates synchronously with the operation unit and together with the transmitting and receiving plates, forms a capacitor. When the metal plate rotates, the capacitance signal generated by the capacitor changes accordingly. A chip integrated on the circuit board receives this capacitance signal and determines the rotation angle of the operation unit based on the capacitance signal. Because the chip is integrated on the circuit board, in the event of a malfunction in the angle detection function, replacing the joystick's angle detection module can easily resolve the joystick angle detection fault without affecting other functions of the electronic device and without requiring fault location, thus improving fault resolution efficiency and reducing the number of components replaced to solve the fault.

[0023] Regarding circuit boards, such as Figures 4 to 5 As shown, the circuit board includes at least: several electrical connection parts 5; the electrical connection parts are connected to the chip 4, and the electrical connection parts are at least used to transmit the rotation angle sent by the chip to the external circuit. The external circuit can be the circuit corresponding to the motherboard (control chip) of the electronic device. After receiving the rotation angle, the control chip determines the corresponding control command according to the rotation angle, thereby realizing the control of the electronic device by using the joystick.

[0024] like Figure 4 As shown, the electrical connection part 5 is specifically a pin. When the location of the pin on the circuit board 3 is made of a flexible material, such as... Figure 6 As shown, circuit board 3 also includes a reinforcing portion 31; the reinforcing portion 31 is located on the back side of circuit board 3, the pin is located on the front side of the circuit board, and the projection of the reinforcing portion toward the pin covers the pin to enhance the pin's strength. The front side of the circuit board mentioned here is as follows... Figure 7 As shown, this is the outward-facing side of the joystick's overall structure. Chip 4 is also located on the front of the same circuit board. The back of the circuit board is shown... Figure 6 As shown, this is the side facing the interior of the joystick structure, which can also be understood as the side of the circuit board facing the operating unit. A detection unit 2 is also provided on the back of the circuit board, specifically containing a transmitting electrode and a receiving electrode. The transmitting and receiving electrodes can be etched onto the circuit board to form corresponding patterns, or the shape of the circuit board can be designed according to the required patterns of the transmitting and receiving electrodes, for example... Figure 6 As shown, the overall pattern outline of the transmitter and receiver plates is circular, and the corresponding outline of the circuit board is set to be arc-shaped to ensure that the transmitter and receiver plates have sufficient space and to maximize the utilization of space on the circuit board.

[0025] When the circuit board is a flexible circuit board, reinforcement parts can also be set at other locations that are prone to deformation, except for the pin positions. For example, adding reinforcement parts at the positions on the front of the circuit board corresponding to the emitting and receiving plates can make the positions of the emitting and receiving plates more flat, thereby improving the accuracy of the rotation angle detection results and avoiding the generation of errors.

[0026] In addition, such as Figure 5 As shown, the electrical connection part 5 is specifically a pin, which is fixed to the circuit board by riveting to facilitate the connection of the joystick to the external circuit.

[0027] In addition, to enrich the interaction methods with the joystick, the joystick can be rotated in at least two directions. For example... Figures 8 to 9 As shown, the outer shell 61 and the base 62 form the external structure of the joystick, and all other components are attached to the outer shell 61 and the base 62. The operating unit is disposed within the cavity formed by the outer shell 61 and the base 62, and includes: a first rocker arm 131 and a second rocker arm 132; the rotation direction of the first rocker arm 131 is perpendicular to the rotation direction of the second rocker arm 132; a movable space is provided between the first rocker arm 131 and the second rocker arm 132. The operating unit also includes: a rocker arm 11, a sliding plate 12, and a pivot pin 63. The rocker arm 11 passes through the movable space provided on each rocker arm in sequence through the first rocker arm and the second rocker arm. The first rocker arm abuts against the outer shell 61, and the second rocker arm is disposed below the first rocker arm. The second rocker arm is fixed to the rocker arm 11 by the pivot pin 63 to achieve the fixation of the first rocker arm and the second rocker arm relative to the rocker arm. The movable spaces of the first and second rocker arms are set based on their rotation directions. For example, when the rocker arm rotates in the first direction, it abuts against the side wall of the movable space of the first rocker arm, causing the first rocker arm to rotate. Since the movable space of the second rocker arm follows the same direction as the first direction, the rocker arm moves within its movable space without causing the second rocker arm to rotate. Similarly, the movable space of the first rocker arm follows the same direction as the second direction, and the first and second directions are perpendicular. The first direction is the rotation direction of the first rocker arm, and the second direction is the rotation direction of the second rocker arm.

[0028] In addition to rotation control, the joystick also provides button functionality. A button 7 is mounted on the base 62, its position corresponding to that of the second rocker arm 132. A spring 64 is mounted on the rocker arm 11 facing the base 62. When a pressing force is applied to the rocker arm 11 towards the base 62, the rocker arm 11 compresses the spring 64 and moves towards the base 62, causing the first rocker arm 131 and the second rocker arm 132 to move towards the base 62. A portion of the second rocker arm 132 contacts the button 7, thus triggering the button 7.

[0029] To detect the rotation angles of the first and second rocker arms, corresponding detection structures can be set for rotations in different directions. Specifically, the transmitting electrode includes a first electrode and a second electrode, the receiving electrode includes a third electrode and a fourth electrode, and the metal sheet includes a first floating electrode 231 and a second floating electrode 232. When the first rocker arm rotates, the capacitance signals generated by the first electrode, the third electrode, and the first floating electrode 231 change accordingly; when the second rocker arm rotates, the capacitance signals generated by the second electrode, the fourth electrode, and the second floating electrode 232 change accordingly. The circuit board is a flexible circuit board, bent to form a first and a second surface that are perpendicular to each other, and a bent surface connecting the first and second surfaces. The first and third electrodes are both disposed on one of the first and second surfaces, and the second and fourth electrodes are both disposed on the other of the first and second surfaces.

[0030] The number of receiving electrodes is multiple, and the multiple receiving electrodes are arranged around the emitting electrode; the metal sheet includes a first pattern arranged opposite to the emitting electrode and a second pattern arranged opposite to the receiving electrode; wherein, when the operating unit rotates relative to the circuit board, the relative area between the first pattern and the emitting electrode remains unchanged, while the relative area between the second pattern and at least one receiving electrode changes.

[0031] Taking the detection of the rotation of the first rocker arm as an example, such as Figure 10 As shown, the third electrode plate has a fan-ring structure, and the first electrode plate Tx1 has a circular structure. The radius of the circular structure of the first electrode plate is almost the same as the inner ring radius of the fan-ring structure of the third electrode plate. The third electrode plate is arranged around the first electrode plate. There is one first electrode plate and multiple third electrode plates. Adjacent third electrode plates are connected to different circuits. For example, the third electrode plate includes Rx1 and Rx2. Rx1 and Rx2 are arranged alternately, which helps to improve the signal strength and reduce the error caused by the non-parallel arrangement of the first floating electrode plate and the third electrode plate. All Rx1 are connected to the same receiving path on the chip, and all Rx2 are connected to the same receiving path on the chip. The first floating electrode plate 231 is arranged opposite to the first electrode plate and the third electrode plate, and as shown... Figure 11 As shown, the first floating electrode plate 231 rotates with the first rocker arm in a first direction. The first floating electrode plate 231 includes a circular partial pattern (first pattern) opposite to the first electrode plate, and a toothed pattern (second pattern) extending outward from the circular partial pattern. The number of toothed patterns is the same as the number of Rx1 or Rx2. The number of Rx1 and Rx2 is the same. The toothed structure can simultaneously cover at least one Rx1 and at least one Rx2 to avoid detection blind spots.

[0032] For ease of understanding, the first electrode plate Tx1, a set of Rx1 and Rx2, and the first floating electrode plate 231 can be represented as follows: Figure 12The structure shown, in which the rotation of the first floating electrode plate is equivalent to... Figure 12 The translation is shown. When the first floating plate moves to the right, the area directly opposite Rx2 gradually decreases, while the area directly opposite Rx1 gradually increases. The trend of the change in the first capacitance C1 generated by the first plate Tx1 with the help of the first floating plate and Rx1 is as follows: Figure 13 As shown, the trend of the change of the second capacitance C2 generated by the first electrode Tx1 and Rx2 through the first floating electrode is as follows: Figure 14 As shown, the rotation angle of the first rocker arm can be determined based on C1 and C2.

[0033] After assembly, the circuit board is bent at a 90-degree angle. The unfolded circuit board looks like... Figure 15 As shown, the first electrode plate Tx1 and the third electrode plate (including Rx1 and Rx2) are used in conjunction with the first floating electrode plate to detect the rotation angle of the first rocker arm. The second electrode plate Tx2 and the fourth electrode plate (including Rx3 and Rx4) are used in conjunction with the second floating electrode plate to detect the rotation angle of the second rocker arm. To facilitate bending of the circuit board, the circuit board can be set as a flexible circuit board, or the two circuit boards can be connected by a flexible conductive material. The first electrode plate Tx1 and the second electrode plate Tx2 can be connected through the same path to save on circuit channel space.

[0034] In practical applications, the detection unit can be a capacitor structure built using floating electrodes, or a capacitor structure formed directly by the transmitting and receiving electrodes. For example... Figure 16 As shown, all the electrodes on the circuit board serve as receiving electrodes. For example... Figure 17 As shown, the metal sheet 23 is connected to the circuit board as an emitting electrode. During the rotation of the metal sheet 23, the metal sheet interacts with the electrode on the circuit board (specifically including...). Figure 16 The change in the area between Rx1 and Rx2 (as shown) causes a change in the capacitance signal, which in turn determines the rotation angle of the metal sheet.

[0035] In the above description of the detection unit, the positions of the transmitting and receiving plates constituting the capacitor structure can be interchanged without affecting the final detection effect. When the third plate includes Rx1 and Rx2, the number of Rx1 and Rx2 can be adjusted according to specific circumstances. Alternatively, the third plate can also include plates with more different wiring channels.

[0036] The joystick angle is detected by constructing a capacitor structure, which prevents interference from external magnetic fields and ensures accurate results. Both detection structures are connected to the same chip, improving the module's integration.

[0037] like Figure 8As shown, a first support member 141 is provided at the end of the first rocker arm, and a second support member 142 is provided at the end of the second rocker arm. A first floating electrode plate 231 is provided on the first support member 141, and a second floating electrode plate 232 is provided on the second support member 142. The first and second floating electrode plates can be engraved on the surface of the corresponding support members by laser-direct-structuring (LDS) technology, so that the formation of the first and second floating electrode plates is more stable.

[0038] In addition, such as Figure 18 As shown, the joystick also includes: a first protective cover 321 and a second protective cover 322; the first protective cover 321 covers the first side of the circuit board, that is, the first protective cover covers the position on the circuit board where the first electrode plate and the third electrode plate are set; the second protective cover 322 covers the second side of the circuit board, that is, the second protective cover covers the position on the circuit board where the second electrode plate and the fourth electrode plate are set. The first and second protective covers protect the components on the circuit board and have a certain dustproof effect.

[0039] The first protective cover includes a first gap; the second protective cover includes a second gap; the bent surface of the circuit board passes through the first gap and the second gap, and the bent surface is outside the first and second protective covers. Taking the structure of the first protective cover as an example, as follows... Figure 19 As shown, a first gap 324 is formed at the bottom of the first protective cover and on one side near the second protective cover, and an elongated opening is provided on the outside of the first protective cover to accommodate the chip. The circuit board is inserted into the first protective cover from the bottom, with the chip's position matching the opening. Similarly, a second gap for inserting the circuit board is provided on the second protective cover. Since only one chip can be set on the circuit board, an opening is provided at the position of the protective cover corresponding to the chip to avoid excessive exposure of the circuit board. Protective adhesive can be filled at the chip position to protect the chip. Alternatively, the chip can be wrapped inside the first protective cover by changing its shape to achieve chip protection.

[0040] In addition, protection for chips and circuit boards can also be achieved through another method, such as... Figure 20 As shown, the joystick also includes a protective cover 325; the protective cover covers the periphery of the circuit board, completely covering the entire circuit board; the protective cover 325 includes an opening 323; the position of the opening corresponds to the location of the chip. The integrated protective cover design improves the reliability of circuit board protection, reduces the number of components, and increases integration. Furthermore, using a first and second protective cover to protect the circuit board further facilitates device miniaturization and makes the installation and replacement of the protective cover structure easier.

[0041] The first and second protective covers and the protective shield mentioned above are all connected to each other by means of snap-fit ​​mechanisms. Figure 1 The control stick body shown is assembled. When the control stick angle detection function malfunctions, the circuit board with the first and second protective covers, or with a protective cover, can be removed by using clips and replaced with other fault-free circuit boards. Then, the clips are used to complete the reassembly, thus eliminating the problem. Replacing the circuit board is simple and does not require disassembling the internal parts of the control stick body.

[0042] When the structural dimensions formed by the joystick's housing and base are relatively small, in order to ensure the number of electrical connections on the circuit board, such as... Figure 21 As shown, the circuit board includes a plurality of electrical connection portions 5; the electrical connection portions are disposed on a first surface and / or a second surface. Electrical connection portions 5 are disposed on different surfaces of the circuit board, increasing the space available for the electrical connection portions 5 and thus ensuring the quantity of electrical connection portions 5 is sufficient.

[0043] The aforementioned electrical connection configuration, circuit board protection structure configuration, and detection unit structure can be freely combined in practical applications, and the combined solution possesses the beneficial effects of each of the combined configuration methods.

[0044] In addition to the above explanation, to avoid interference from external electromagnetic signals, an electromagnetic shielding film can be attached to the surface of the circuit board, specifically to the side of the circuit board facing outwards.

[0045] This utility model also relates to an electronic device, including the aforementioned joystick.

[0046] Compared with related technologies, the electronic device provided in this embodiment of the present invention is equipped with the joystick provided in the aforementioned embodiments. Therefore, it also has the same technical effects as those provided in the aforementioned embodiments, and will not be described in detail here.

[0047] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing this application, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of this application.

Claims

1. A joystick, characterized in that, include: Operation unit, detection unit, and circuit board; The detection unit includes: an emitting electrode plate and a receiving electrode plate disposed on the circuit board, and a metal sheet disposed on the operating unit; The operating unit rotates relative to the circuit board, and the metal sheet rotates synchronously with the operating unit; The circuit board also integrates chips; The emitting electrode and the receiving electrode are connected to the chip. The chip determines the rotation angle of the operating unit based on the capacitance signal generated by the emitting electrode, the receiving electrode, and the metal sheet.

2. The joystick according to claim 1, characterized in that, The circuit board includes: a plurality of electrical connection portions; The electrical connection is connected to the chip, and the electrical connection is at least used to transmit the rotation angle sent by the chip.

3. The joystick according to claim 2, characterized in that, The electrical connection portion is specifically a pin; the circuit board also includes a reinforcing portion; the reinforcing portion is located on the back of the circuit board, the pin is located on the front of the circuit board, and the projection of the reinforcing portion toward the pin covers the pin.

4. The joystick according to claim 2, characterized in that, The electrical connection part is specifically a pin, which is fixed to the circuit board by riveting.

5. The joystick according to claim 1, characterized in that, The operating unit includes: a first rocker arm and a second rocker arm; the rotation direction of the first rocker arm is perpendicular to the rotation direction of the second rocker arm; The transmitting electrode plate includes: a first electrode plate and a second electrode plate; the receiving electrode plate includes: a third electrode plate and a fourth electrode plate; and the metal sheet includes: a first floating electrode plate and a second floating electrode plate. When the first rocker arm rotates, the capacitance signals generated by the first electrode plate, the third electrode plate, and the first floating electrode plate change accordingly. When the second rocker arm rotates, the capacitance signals generated by the second electrode plate, the fourth electrode plate, and the second floating electrode plate change accordingly. The circuit board is a flexible circuit board, which is bent to form a first surface and a second surface that are perpendicular to each other, and a bent surface connecting the first surface and the second surface. The first electrode plate and the third electrode plate are jointly disposed on one of the first surface and the second surface, and the second electrode plate and the fourth electrode plate are jointly disposed on the other of the first surface and the second surface.

6. The joystick according to claim 1, characterized in that, Also includes: Protective shield; The protective cover covers the periphery of the circuit board; The protective cover includes: an opening; The opening is located at the same position as the chip.

7. The joystick according to claim 5, characterized in that, Also includes: First protective cover and second protective cover; The first protective cover covers the first surface, and the second protective cover covers the second surface; The first protective cover includes a first gap; the second protective cover includes a second gap; The bent surface passes through the first gap and the second gap, and the bent surface is located outside the first protective cover and the second protective cover.

8. The joystick according to claim 5, characterized in that, The circuit board includes: a plurality of electrical connection portions; The electrical connection portion is disposed on the first surface and / or the second surface.

9. The joystick according to claim 1, characterized in that, The number of receiving electrodes is multiple, and the multiple receiving electrodes are arranged around the transmitting electrode; The metal sheet includes a first pattern disposed opposite to the emitting electrode and a second pattern disposed opposite to the receiving electrode; wherein, when the operating unit rotates relative to the circuit board, the relative area between the first pattern and the emitting electrode remains unchanged, while the relative area between the second pattern and at least one receiving electrode changes.

10. An electronic device, characterized in that, include: The joystick as described in any one of claims 1 to 9.

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