Capacitive joystick device and steering wheel remote control
The capacitive joystick device addresses mechanical wear and interference issues by using capacitance sensing to detect position changes, ensuring high precision and longevity without contact wear or interference.
Patent Information
- Application Number
- JP2025003575U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2025-09-09
- Filing Date
- 2025-10-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-10-17
AI Technical Summary
Carbon film joysticks suffer from mechanical wear and foreign object interference, leading to reduced detection accuracy and instability in joystick signal output.
A capacitive joystick device utilizing movable and static electrodes to form capacitors, detecting position through capacitance changes without physical contact, thereby avoiding wear and interference.
Ensures high-precision position detection with extended service life and resistance to foreign object interference, maintaining accurate joystick signal output.
Smart Images
Figure 0003254581000001_ABST
Abstract
Description
[Technical Field]
[0001] The present application relates to the technical field of remote controls, and more particularly to capacitive joystick devices and steering wheel remote controls. [Background technology]
[0002] Joysticks are common components found in various remote control devices, and their swing position must be detected during use. Carbon film joystick technology is currently the mainstream, using a contact-type structure to change the resistance of an electric brush sliding across a carbon film, thereby generating a joystick signal. Carbon film joysticks offer high-precision control through their contact structure. However, due to the mechanical contact involved, prolonged or heavy use can cause wear on the electric brush and carbon film, affecting the accuracy of joystick swing position detection. Furthermore, the presence of foreign matter between the electric brush and carbon film can cause unstable contact, resulting in abnormal joystick signal output and affecting detection accuracy. Summary of the Invention [Problem to be solved by the invention]
[0003] In view of this, the present application provides a capacitive joystick device and a steering wheel remote control, which solves the technical problem that the detection accuracy of a contact joystick is reduced due to mechanical wear and foreign object interference. [Means for solving the problem]
[0004] A capacitive joystick device according to one embodiment of the present disclosure includes a circuit board, a detection assembly, and a joystick assembly. The detection assembly includes a first movable electrode, a second movable electrode, and a static electrode. The first movable electrode, the second movable electrode, and the static electrode are each electrically connected to the circuit board. The first movable electrode and the static electrode are spaced apart along the thickness direction of the circuit board to form a first capacitor, and the second movable electrode and the static electrode are spaced apart along the thickness direction of the circuit board to form a second capacitor. The joystick assembly is connected to the detection assembly. The joystick assembly is used to swing to simultaneously move the first movable electrode and the second movable electrode relative to the static electrode in a plane perpendicular to the thickness direction of the circuit board. When the joystick assembly swings, the relative areas of the first movable electrode and the static electrode and the second movable electrode and the static electrode change, thereby changing the capacitance values of the first capacitor and the second capacitor.
[0005] The joystick assembly is operated to move the first and second movable electrodes relative to the static electrodes, thereby changing the relative areas of the first and second movable electrodes and the static electrodes. The capacitance of the first capacitor is related to the relative areas of the first and second movable electrodes, and the capacitance of the second capacitor is related to the relative areas of the second and third movable electrodes. Therefore, the position of the joystick assembly can be determined by changing the capacitance of the first and second capacitors. Because there is no physical contact between the first and second movable electrodes and the static electrodes, and detection is performed by capacitance sensing, this not only provides high-precision position detection, but also avoids mechanical wear and fatigue, prolongs the service life of the capacitive joystick device, and is less susceptible to interference from foreign objects, effectively ensuring detection accuracy.
[0006] In some embodiments, the static electrode piece has an extension direction. The first movable electrode piece and the second movable electrode piece are spaced apart along the extension direction. The extension direction intersects with the thickness direction of the circuit board. A projection of the first movable electrode piece and a projection of the static electrode piece at least partially overlap along the thickness direction of the circuit board, the overlapping portion being a first portion. A projection of the second movable electrode piece and a projection of the static electrode piece at least partially overlap along the thickness direction of the circuit board, the overlapping portion being a second portion. When the joystick assembly swings, the first movable electrode piece and the second movable electrode piece simultaneously move along the extension direction relative to the static electrode piece, thereby increasing the area of the first portion and decreasing the area of the second portion, or decreasing the area of the first portion and increasing the area of the second portion.
[0007] When the joystick assembly is in its initial position, the areas of the first and second portions are equal, and the capacitance of the first capacitor is equal to the capacitance of the second capacitor. As the joystick assembly swings, the area of the first portion increases and the area of the second portion decreases, causing the capacitance of the first capacitor to be greater than the capacitance of the second capacitor, thereby indicating that the first and second movable electrodes have moved in the direction from the first to the second movable electrodes. The position of the joystick assembly can be determined based on the numerical relationship between the capacitance of the first capacitor and the capacitance of the second capacitor. As the joystick assembly swings, the area of the first portion decreases and the area of the second portion increases, causing the capacitance of the first capacitor to be smaller than the capacitance of the second capacitor, thereby indicating that the first and second movable electrodes have moved in the direction from the second to the first movable electrodes. The position of the joystick assembly can be determined based on the numerical relationship between the capacitance of the first capacitor and the capacitance of the second capacitor.
[0008] In some embodiments, the first movable electrode piece and the second movable electrode piece both include an electrode piece body and an elastic member. The electrode piece body and the static electrode piece of the first movable electrode piece are spaced apart along the thickness direction of the circuit board. The electrode piece body and the static electrode piece of the second movable electrode piece are spaced apart along the thickness direction of the circuit board. The elastic member includes a connecting portion and an arc-shaped contact portion. The connecting portion is connected to the electrode piece body. The arc-shaped contact portion is configured to protrude toward the circuit board. The arc-shaped contact portion elastically contacts the circuit board to achieve electrical connection.
[0009] When the elastic member comes into contact with the circuit board, it undergoes elastic deformation, which can provide a stable, continuous, and self-adaptive contact pressure, improving the reliability of the electrical connection between the first movable electrode piece, the second movable electrode piece, and the circuit board. In addition, because the arc-shaped contact portion is configured to protrude toward the circuit board, the elastic member and the circuit board make arc-surface contact, which reduces wear on the circuit board caused by the elastic member and extends the service life of the circuit board and the elastic member.
[0010] In some embodiments, the static electrode piece has an extension direction. When the joystick assembly swings, the first movable electrode piece and the second movable electrode piece simultaneously move in conjunction with each other along the extension direction relative to the static electrode piece. The number of elastic members is two. The two elastic members are spaced apart in a direction perpendicular to the extension direction and perpendicular to the thickness direction of the circuit board.
[0011] The arc-shaped contact portion of the elastic member functions as a contact terminal between the electrode piece body and the circuit board. If only one elastic member were provided and only two contact terminals were provided between the detection assembly and the circuit board, the joystick assembly would not move parallel to the extension direction when it swings, but would instead swing along a single arc. For example, when the joystick assembly swings toward the second movable electrode piece, the arc-shaped contact portion of the second movable electrode piece would receive a force and contact the circuit board, but the arc-shaped contact portion of the first movable electrode piece would likely lift up, affecting the electrical connection between the first movable electrode piece and the circuit board. If two elastic members were provided along a direction perpendicular to the extension direction and perpendicular to the thickness direction of the circuit board (the Y direction in FIG. 5), the first movable electrode piece would still be electrically connected to the circuit board through two arc-shaped contact portions when the joystick assembly swings toward the second movable electrode piece. Even if one of the arc-shaped contact portions is lifted up, the other arc-shaped contact portion can still maintain a reliable electrical connection, thereby improving the stability and reliability of the electrical connection between the first movable electrode piece and the second movable electrode piece and the circuit board.
[0012] In some embodiments, the number of detection assemblies is two. One set of detection assemblies is located on one side of the joystick assembly along the first direction, and the other set of detection assemblies is located on the other side of the joystick assembly along the second direction. The first direction, the second direction, and the thickness direction of the circuit board intersect with each other in pairs.
[0013] Here, one set of detection assemblies can determine the position of the joystick assembly in a first direction, and another set of detection assemblies can determine the position of the joystick assembly in a second direction, thereby determining the position of the joystick assembly in a plane perpendicular to the thickness direction of the circuit board.
[0014] In some embodiments, the capacitive joystick device further includes a capacitance chip, which is mounted on the circuit board and electrically connected to the circuit board, and the first movable electrode piece, the second movable electrode piece, and the static electrode piece are electrically connected to the capacitance chip, respectively, and the capacitance chip is used to obtain the capacitance values of the first capacitor and the second capacitor and output a detection signal.
[0015] In some embodiments, the detection assembly further includes a connecting member. The connecting member includes an assembly portion, a first mounting portion, and a second mounting portion. The assembly portion is connected to the joystick assembly. The first mounting portion is fixedly connected to the first movable electrode piece, and the second mounting portion is fixedly connected to the second movable electrode piece.
[0016] In some embodiments, both the first mounting portion and the second mounting portion are provided with stopper grooves. Both the first movable electrode piece and the second movable electrode piece include an electrode piece body and a fixing portion connected to the electrode piece body. The fixing portion of the first movable electrode piece is assembled into the stopper groove of the first mounting portion to fixedly connect the first movable electrode piece to the connecting member. The fixing portion of the second movable electrode piece is assembled into the stopper groove of the second mounting portion to fixedly connect the second movable electrode piece to the connecting member.
[0017] In some embodiments, the joystick assembly includes a joystick body, an operating portion, and a swinging element provided on the operating portion. The operating portion is movably connected to the joystick body. The joystick body moves the operating portion to swing. The swinging element has a mounting groove along the thickness direction of a circuit board. The assembly portion is provided within the mounting groove. The sidewalls of the mounting groove prevent the assembly portion from moving relative to the swinging element in a plane perpendicular to the thickness direction of the circuit board.
[0018] In addition, the steering wheel remote control according to the present disclosure includes the capacitive joystick device described in any one of the above-mentioned embodiments. [Brief explanation of the drawings]
[0019] In order to more clearly explain the technical solutions of the embodiments of the present application, the following drawings are briefly introduced in the embodiments, which are merely examples of the present application and should not be construed as limiting the scope of protection of the present application.
[0020] [Figure 1] 1 is a perspective view of a capacitive joystick device according to an embodiment of the present application; [Figure 2] 1 is a schematic diagram of a local structure of a capacitive joystick device according to an embodiment of the present application; [Figure 3] 1 is a schematic diagram of a local structure of a detection assembly according to an embodiment of the present application; [Figure 4] 3A and 3B are structural schematic diagrams of a first movable electrode piece or a second movable electrode piece according to an embodiment of the present application. [Figure 5] 1 is a schematic diagram of a local structure of a capacitive joystick device according to an embodiment of the present application; [Figure 6] 1 is a structural schematic diagram of a detection assembly according to an embodiment of the present application; [Figure 7] 1 is an exploded view of a capacitive joystick device according to an embodiment of the present application. [Figure 8] 1 is a schematic diagram of a local structure of a capacitive joystick device according to an embodiment of the present application; [Figure 9] 1 is a cross-sectional view of a capacitive joystick device according to an embodiment of the present application. [Figure 10] 1 is a schematic diagram of a module of a steering wheel remote control according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION
[0021] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, but not all embodiments.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art of the present application. The terms used in the following specification are only for describing specific embodiments and are not intended to limit the present application.
[0023] However, the definitions of "first direction," "second direction," and "third direction" are not intended to imply that the "first direction," "second direction," and "third direction" must depend on the related structures, but rather to facilitate explanation of the relative positional relationships of the related structures.
[0024] In the description of this application, the orientations or positional relationships indicated by terms such as "left," "right," and "vertical" are based on the orientations or positional relationships shown in the drawings and are for the purpose of explanation and simplification of this application only, and do not imply that the indicated or implied devices or components must have a particular orientation or be constructed or operated in a particular orientation, and therefore should not be construed as limiting this application.
[0025] Additionally, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] The term "perpendicular" is used to describe an ideal state between two parts. In actual production or use, a state close to perpendicular may exist between two parts. Two parts described as "perpendicular" do not need to be absolutely straight or planar, but may be approximately straight or planar. Parts are considered "straight" or "planar" if the overall extension direction is straight or planar from a macroscopic perspective.
[0027] The term "parallel" is used to describe an ideal state between two parts. In actual production or use, a state close to parallel may exist between two parts. Two parts described as "parallel" do not need to be absolutely straight or planar, but may be approximately straight or planar. If the overall extension direction is straight or planar when viewed macroscopically, the parts are considered to be "straight" or "planar."
[0028] It should be noted that when an element is described as being "connected" to another element, it may be directly connected to the other element, or there may be an intervening element. When an element is described as being "mounted on" another element, it may be directly mounted on the other element, or there may be an intervening element.
[0029] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0030] A capacitive joystick device according to an embodiment of the present application includes a circuit board, a detection assembly, and a joystick assembly. The detection assembly includes a first movable electrode, a second movable electrode, and a static electrode. The first movable electrode, the second movable electrode, and the static electrode are each electrically connected to the circuit board. The first movable electrode and the static electrode are spaced apart along the thickness direction of the circuit board to form a first capacitor. The second movable electrode and the static electrode are spaced apart along the thickness direction of the circuit board to form a second capacitor. The joystick assembly is connected to the detection assembly. The joystick assembly is used to swing to simultaneously move the first movable electrode and the second movable electrode relative to the static electrode in a plane perpendicular to the thickness direction of the circuit board. When the joystick assembly swings, the relative areas of the first movable electrode and the static electrode and the second movable electrode and the static electrode change, thereby changing the capacitance values of the first capacitor and the second capacitor.
[0031] The joystick assembly is operated to move the first and second movable electrodes relative to the static electrodes, thereby changing the relative areas of the first and second movable electrodes and the static electrodes. The capacitance of the first capacitor is related to the relative areas of the first and second movable electrodes, and the capacitance of the second capacitor is related to the relative areas of the second and third movable electrodes. Therefore, the position of the joystick assembly can be determined by changing the capacitance of the first and second capacitors. Because there is no physical contact between the first and second movable electrodes and the static electrodes, and detection is performed by capacitance sensing, this not only provides high-precision position detection, but also avoids mechanical wear and fatigue, prolongs the service life of the capacitive joystick device, and is less susceptible to interference from foreign objects, effectively ensuring detection accuracy.
[0032] Some embodiments of the present application will be described in detail below with reference to the drawings. Unless there is a contradiction, the following embodiments and features in the embodiments can be combined with each other.
[0033] 1 and 2, a capacitive joystick device 100 according to an embodiment of the present disclosure includes a circuit board 1, a detection assembly 2, and a joystick assembly 3. The detection assembly 2 includes a first movable electrode piece 21, a second movable electrode piece 22, and a static electrode piece 23. The first movable electrode piece 21, the second movable electrode piece 22, and the static electrode piece 23 are each electrically connected to the circuit board 1. The first movable electrode piece 21 and the static electrode piece 23 are spaced apart along the thickness direction of the circuit board 1 to form a first capacitor. The second movable electrode piece 22 and the static electrode piece 23 are spaced apart along the thickness direction of the circuit board 1 to form a second capacitor. The joystick assembly 3 is connected to the detection assembly 2. The joystick assembly 3 swings to simultaneously move the first movable electrode piece 21 and the second movable electrode piece 22 relative to the static electrode piece 23 in a plane perpendicular to the thickness direction of the circuit board 1. When the joystick assembly 3 swings, it changes the relative area between the first movable electrode piece 21 and the static electrode piece 23, and the relative area between the second movable electrode piece 22 and the static electrode piece 23, thereby changing the capacitance value of the first capacitor and the capacitance value of the second capacitor.
[0034] By operating the joystick assembly 3, the first movable electrode piece 21 and the second movable electrode piece 22 move relative to the static electrode piece 23, thereby changing the relative areas of the first movable electrode piece 21 and the static electrode piece 23 and the second movable electrode piece 22 and the static electrode piece 23. Because the capacitance of the first capacitor is related to the relative areas of the first movable electrode piece 21 and the static electrode piece 23, and the capacitance of the second capacitor is related to the relative areas of the second movable electrode piece 22 and the static electrode piece 23, the position of the joystick assembly 3 can be determined through changes in the capacitance of the first capacitor and the capacitance of the second capacitor. Because there is no physical contact between the first movable electrode piece 21 and the static electrode piece 23 and between the second movable electrode piece 22 and the static electrode piece 23 and detection is performed by capacitance sensing, not only can high-precision position detection be achieved, but mechanical wear and fatigue problems can be avoided, the service life of the capacitive joystick device 100 can be extended, and detection accuracy can be effectively guaranteed because it is less susceptible to interference from foreign objects.
[0035] In some embodiments, a capacitive joystick device 100 is used as an input device, typically in a drone control handle, a game controller, or the like. As shown in FIGS. 1 and 2, the capacitive joystick device 100 includes a housing 6, a circuit board 1, a detection assembly 2, and a joystick assembly 3. The housing 6 typically includes a base 61 and a top cover 62. The circuit board 1 is mounted on the base 61. The base 61 and the top cover 62 engage with each other to form a mounting cavity 60 (see FIG. 9 ) for mounting the circuit board 1, the detection assembly 2, and the joystick assembly 3.
[0036] As shown in FIG. 3 , in some embodiments, the static electrode piece 23 is provided on the circuit board 1. The static electrode piece 23 has an extension direction. The first movable electrode piece 21 and the second movable electrode piece 22 are spaced apart along the extension direction and are located on the same side of the static electrode piece 23. The extension direction of the static electrode piece 23 intersects with the thickness direction of the circuit board 1. Along the thickness direction of the circuit board 1, the projection of the first movable electrode piece 21 and the projection of the static electrode piece 23 at least partially overlap, and the overlapping portion is the first portion 201. Along the thickness direction of the circuit board 1, the projection of the second movable electrode piece 22 and the projection of the static electrode piece 23 at least partially overlap, and the overlapping portion is the second portion 202. When the joystick assembly 3 swings, the first movable electrode piece 21 and the second movable electrode piece 22 simultaneously move along the extension direction relative to the static electrode piece 23, thereby increasing the area of the first part 201 and decreasing the area of the second part 202, or decreasing the area of the first part 201 and increasing the area of the second part 202.
[0037] When the joystick assembly 3 is in its initial position, the areas of the first portion 201 and the second portion 202 are equal, and the capacitance of the first capacitor is equal to the capacitance of the second capacitor. When the joystick assembly 3 swings, the area of the first portion 201 increases and the area of the second portion 202 decreases, and the capacitance of the first capacitor becomes larger than the capacitance of the second capacitor. This makes it possible to know that the first movable electrode piece 21 and the second movable electrode piece 22 have moved in the direction from the first movable electrode piece 21 to the second movable electrode piece 22, and further to obtain the position of the joystick assembly 3 based on the numerical relationship between the capacitance of the first capacitor and the capacitance of the second capacitor. When the joystick assembly 3 swings, the area of the first portion 201 decreases and the area of the second portion 202 increases, and the capacitance value of the first capacitor becomes smaller than the capacitance value of the second capacitor, thereby making it possible to know that the first movable electrode piece 21 and the second movable electrode piece 22 have moved along the direction from the second movable electrode piece 22 to the first movable electrode piece 21, and further, to obtain the position of the joystick assembly 3 based on the numerical relationship between the capacitance value of the first capacitor and the capacitance value of the second capacitor.
[0038] As can be understood, in Figure 3, the first part 201 indicates the overlapping portion between the projection of the first movable electrode piece 21 and the projection of the static electrode piece 23 in the thickness direction of the circuit board 1, and the second part 202 indicates the overlapping portion between the projection of the second movable electrode piece 22 and the projection of the static electrode piece 23 in the thickness direction of the circuit board 1, and does not indicate a part of the static electrode piece 23.
[0039] 3 and 4, in some embodiments, the first movable electrode piece 21 and the second movable electrode piece 22 each include an electrode piece body 210 and an elastic member 220. The electrode piece body 210 and the static electrode piece 23 of the first movable electrode piece 21 are spaced apart in the thickness direction of the circuit board 1. The electrode piece body 210 and the static electrode piece 23 of the second movable electrode piece 22 are spaced apart in the thickness direction of the circuit board 1. The elastic member 220 includes a connecting portion 2201 and an arc-shaped contact portion 2202. The connecting portion 2201 is connected to the electrode piece body 210. The arc-shaped contact portion 2202 is configured to protrude toward the circuit board 1. The arc-shaped contact portion 2202 elastically contacts the circuit board 1 to establish electrical connection.
[0040] Elastic deformation occurs when the elastic member 220 comes into contact with the circuit board 1. This elastic deformation can provide stable, sustained, and self-adaptive contact pressure, improving the reliability of the electrical connection between the first movable electrode piece 21, the second movable electrode piece 22, and the circuit board 1. In addition, because the arc-shaped contact portion 2202 is provided to protrude toward the circuit board 1, the elastic member 220 and the circuit board 1 come into contact with each other through an arc, which reduces wear on the circuit board 1 caused by the elastic member 220 and extends the service life of the circuit board 1 and the elastic member 220.
[0041] In some embodiments, the electrode piece body 210 and the elastic member 220 are integrally molded.
[0042] In some embodiments, the elastic member 220 and the circuit board 1 are electrically connected via a metal conductive element.
[0043] In some embodiments, the static electrode piece 23 has an extension direction. When the joystick assembly 3 swings, the first movable electrode piece 21 and the second movable electrode piece 22 simultaneously move in conjunction with each other along the extension direction relative to the static electrode piece 23. The number of elastic members 220 is two. The two elastic members 220 are spaced apart in a direction perpendicular to the extension direction and perpendicular to the thickness direction of the circuit board 1 (Y direction in FIG. 5).
[0044] The arc-shaped contact portion 2202 of the elastic member 220 functions as a contact terminal between the electrode piece body 210 and the circuit board 1. If only one elastic member 220 were provided and only two contact terminals were provided between the detection assembly 2 and the circuit board 1, when the joystick assembly 3 oscillates, the joystick assembly 3 would not move parallel to the extension direction, but would oscillate along a single arc. For example, when the joystick assembly 3 oscillates toward the side where the second movable electrode piece 22 is located, the arc-shaped contact portion 2202 of the second movable electrode piece 22 would receive a force and come into contact with the circuit board 1, but the arc-shaped contact portion 2202 of the first movable electrode piece 21 would likely lift up, affecting the electrical connection between the first movable electrode piece 21 and the circuit board 1. When two elastic members 220 are provided along a direction perpendicular to the extension direction and perpendicular to the thickness direction of the circuit board 1 (Y direction in FIG. 5), assuming that the joystick assembly 3 still swings toward the side where the second movable electrode piece 22 is located, the first movable electrode piece 21 and the circuit board 1 achieve electrical connection through the two arc-shaped contact portions 2202. Even if one of the arc-shaped contact portions 2202 rises up, the other arc-shaped contact portion 2202 can still maintain a reliable electrical connection. This improves the stability and reliability of the electrical connection between the first movable electrode piece 21 and the second movable electrode piece 22 and the circuit board 1.
[0045] 5, in some embodiments, there are two sets of detection assemblies 2. One set of detection assemblies 2 is located on one side of the joystick assembly 3 along the first direction X, and the other set of detection assemblies 2 is located on the other side of the joystick assembly 3 along the second direction Y. The first direction X, the second direction Y, and the thickness direction of the circuit board 1 intersect in pairs. Taking the embodiment shown in FIG. 5 as an example, the thickness direction of the circuit board 1 is the third direction Z.
[0046] One set of detection assemblies 2 can determine the position of the joystick assembly 3 in a first direction X, and another set of detection assemblies 2 can determine the position of the joystick assembly 3 in a second direction Y. This allows the position of the joystick assembly 3 to be determined in a plane perpendicular to the thickness direction of the circuit board 1.
[0047] Continuing to refer to Figure 5, taking the orientation shown in Figure 5 as an example, one set of detection assemblies 2 is a first detection assembly 20a, and the other set of detection assemblies 2 is a second detection assembly 20b. In the first detection assembly 20a, the static electrode pieces 23 extend along a first direction X, allowing the first detection assembly 20a to determine the position of the joystick assembly 3 in the first direction X. In the second detection assembly 20b, the static electrode pieces 23 extend along a second direction Y, allowing the second detection assembly 20b to determine the position of the joystick assembly 3 in the second direction Y.
[0048] 2, in some embodiments, the capacitive joystick device 100 further includes a capacitive chip 4. The capacitive chip 4 is mounted on the circuit board 1 and electrically connected to the circuit board 1. The first movable electrode piece 21, the second movable electrode piece 22, and the static electrode piece 23 are each electrically connected to the capacitive chip 4. The capacitive chip 4 is used to obtain the capacitance values of the first capacitor and the second capacitor and output a detection signal.
[0049] Regarding the capacitive chip 4, the capacitive chip 4 can realize signal detection and control functions through the principle of capacitance. The working principle of the capacitive chip 4 is to utilize the charge accumulation characteristics between two conductors to sense changes in capacitance caused by changes in the surrounding environment (e.g., the approach of an object, pressure sensitivity, etc.), thereby converting physical signals into digital signals. In each embodiment of the present application, the capacitive chip 4 is used to detect the capacitance values of the first capacitor and the second capacitor. In each embodiment of the present application, by detecting the change in the ratio of the capacitance values of the first capacitor and the second capacitor, the position information input by the user through the joystick assembly 3 can be determined, and the influence of environmental factors (e.g., temperature) on the capacitance value can be avoided. The capacitive chip 4 has high sensitivity, can detect minute changes in capacitance, and is resistant to electromagnetic interference, which helps improve the control accuracy of the capacitive joystick device 100.
[0050] The detection signal output by the capacitance chip 4 specifically refers to position information within a plane perpendicular to the thickness direction of the circuit board 1 of the joystick assembly 3. Taking a game controller as an example, the position information refers to position information output by the player through swinging the joystick assembly 3, or command information that can realize interaction with game software.
[0051] 6 , in some embodiments, the detection assembly 2 further includes a connecting member 24. The connecting member 24 includes an assembly portion 243, a first mounting portion 241, and a second mounting portion 242. The assembly portion 243 is connected to the joystick assembly 3. The first mounting portion 241 is fixedly connected to the first movable electrode piece 21. The second mounting portion 242 is fixedly connected to the second movable electrode piece 22.
[0052] As a result, when the joystick assembly 3 swings, the first movable electrode piece 21 and the second movable electrode piece 22 can be moved in the same direction through the connecting member 24, thereby increasing the area of the first part 201 and decreasing the area of the second part 202, or decreasing the area of the first part 201 and increasing the area of the second part 202.
[0053] In some embodiments, the first mounting portion 241 and the second mounting portion 242 are both provided with stopper grooves 240. The first movable electrode piece 21 and the second movable electrode piece 22 each include an electrode piece body 210 and a fixing portion 211 connected to the electrode piece body 210. The fixing portion 211 of the first movable electrode piece 21 is assembled into the stopper groove 240 of the first mounting portion 241, thereby fixedly connecting the first movable electrode piece 21 and the connecting member 24. The fixing portion 211 of the second movable electrode piece 22 is assembled into the stopper groove 240 of the second mounting portion 242, thereby fixedly connecting the second movable electrode piece 22 and the connecting member 24.
[0054] 5 to 7, in some embodiments, the joystick assembly 3 includes a joystick body 31, an operating portion 32, and a swing element 33 provided on the operating portion 32. The operating portion 32 is movably connected to the joystick body 31. The joystick body 31 moves the operating portion 32 to swing it. The swing element 33 has a mounting groove 330 along the thickness direction of the circuit board 1. The assembly portion 243 is provided in the mounting groove 330. The side walls of the mounting groove 330 prevent the assembly portion 243 from moving relative to the swing element 33 in a plane perpendicular to the thickness direction of the circuit board 1.
[0055] As shown in FIGS. 5 and 7, in some embodiments, there are two operating units 32. Each operating unit 32 is provided with at least one oscillator 33. One operating unit 32 is a first operating unit 321, and the other operating unit 32 is a second operating unit 322. There are two sets of detection assemblies 2. One set of detection assemblies 2 is a first detection assembly 20a, and the other set of detection assemblies 2 is a second detection assembly 20b. Taking the embodiment shown in FIG. 5 as an example, the static electrode 23 of the first detection assembly 20a extends along the first direction X, and the oscillator 33 of the first operating unit 321 is provided on one side of the first operating unit 321 along the second direction Y and is connected to the connecting member 24 of the first detection assembly 20a. The static electrode piece 23 of the second detection assembly 20b extends along the second direction Y, and the oscillator 33 of the second operating part 322 is provided on one side of the second operating part 322 along the first direction X and is connected to the connecting member 24 of the second detection assembly 20b.
[0056] Continuing with the example of the direction shown in Figure 5, when the joystick body 31 swings in the first direction X toward the second movable electrode piece 22 of the first detection assembly 20a, the swing element 33 of the first operating part 321 moves the connecting member 24 to move it in the direction from the second movable electrode piece 22 to the first movable electrode piece 21. For the first detection assembly 20a, when the relative area between the first movable electrode piece 21 and the static electrode piece 23 decreases and the relative area between the second movable electrode piece 22 and the static electrode piece 23 increases, the capacitance values of the first capacitor and the second capacitor of the first detection assembly 20a change, and vice versa.
[0057] When the joystick body 31 swings in the second direction Y toward the second movable electrode piece 22 of the second detection assembly 20b, the swing element 33 of the second operating part 322 moves the connecting member 24 in the direction from the second movable electrode piece 22 to the first movable electrode piece 21. For the second detection assembly 20b, the relative area between the first movable electrode piece 21 and the static electrode piece 23 decreases, and the relative area between the second movable electrode piece 22 and the static electrode piece 23 increases, thereby changing the capacitance values of the first capacitor and the second capacitor of the second detection assembly 20b, and vice versa.
[0058] In this way, the capacitive tip 4 can determine the position of the joystick assembly 3 based on the change in capacitance value.
[0059] 8, in some embodiments, the capacitive joystick device 100 further includes a switch elastic piece 5. The switch elastic piece 5 is provided on the circuit board 1 and configured to be elastically deformed to electrically connect with the circuit board 1. There are two oscillators 33. One oscillator 33 is connected to the connection member 24 of the detection assembly 2, and the other oscillator 33 is used to abut against the switch elastic piece 5. When the joystick assembly 3 moves along the thickness direction of the circuit board 1, the joystick body 31 drives the operating part 32 to move along the thickness direction of the circuit board 1, thereby moving the oscillator 33 closer to or farther away from the switch elastic piece 5.
[0060] Taking a game controller as an example, when a player presses the joystick body 31, the joystick body 31 drives the operation unit 32, causing it to move along the thickness direction of the circuit board 1. Then, the oscillator 33 located above the switch elastic piece 5 moves toward the switch elastic piece 5 and comes into contact with the switch elastic piece 5. The switch elastic piece 5 elastically deforms under pressure from the oscillator 33, comes into contact with the circuit board 1, and establishes an electrical connection with the circuit board 1, thereby allowing other commands such as "confirm" or "select" to be output through the capacitive joystick device 100. Note that "above the switch elastic piece 5" here is merely an example of the illustrated direction, and this embodiment is not limited to this.
[0061] In some embodiments, the mounting groove 330 extends along the thickness direction of the circuit board 1. When the operating portion 32 moves along the thickness direction of the circuit board 1, the assembly portion 243 of the connecting member 24 does not restrict the movement of the operating portion 32.
[0062] 9, in some embodiments, the joystick assembly 3 further includes a return member 34. The return member 34 is provided in compression between the operation portion 32 and the base 61. The return member 34 assists the joystick assembly 3 in returning to its original position after swinging. Preferably, the return member 34 includes, but is not limited to, a spring.
[0063] As shown in Fig. 10, in another aspect of the present application, a steering wheel remote control 200 is provided. The steering wheel remote control 200 includes the capacitive joystick device 100 described in any one of the above-mentioned embodiments. The steering wheel remote control 200 employs the technical solutions of all the above-mentioned embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, and detailed descriptions thereof will be omitted here.
[0064] Those skilled in the art should understand that the above embodiments are merely for the purpose of illustrating the present application and are not intended to limit the present application. Any appropriate modifications and variations to the above embodiments within the essential spirit of the present application are included in the scope of protection of the present application. [Explanation of symbols]
[0065] 100, capacitive joystick device; 1, circuit board; 2, detection assembly; 20a, first detection assembly; 20b, second detection assembly; 21, first movable electrode piece; 22, second movable electrode piece; 210, electrode piece body; 220, elastic member; 2201, connecting portion; 2202, arc-shaped contact portion; 211, fixed portion; 23, static electrode piece; 201, first portion; 202, second portion; 24, connecting member; 241, first mounting portion; 242, second Mounting part; 243, assembly part; 240, stopper groove; 3, joystick assembly; 31, joystick body; 32, operation part; 321, first operation part; 322, second operation part; 33, oscillator; 330, mounting groove; 34, return member; 4, capacitance chip; 5, switch elastic piece; 6, housing; 60, mounting cavity; 61, base; 62, top cover; 200, handle remote control; X, first direction; Y, second direction; Z, third direction.
Claims
1. 1. A capacitive joystick device, comprising: A circuit board; a detection assembly including a first movable electrode piece, a second movable electrode piece, and a static electrode piece, the first movable electrode piece, the second movable electrode piece, and the static electrode piece being electrically connected to the circuit board, respectively, the first movable electrode piece and the static electrode piece being spaced apart along the thickness direction of the circuit board to form a first capacitor, and the second movable electrode piece and the static electrode piece being spaced apart along the thickness direction of the circuit board to form a second capacitor; a joystick assembly connected to the detection assembly, the joystick assembly is used to swing to simultaneously move the first movable electrode piece and the second movable electrode piece relative to the static electrode piece within a plane perpendicular to the thickness direction of the circuit board; The joystick assembly is characterized in that, when the joystick assembly swings, the relative areas of the first movable electrode piece and the static electrode piece and the relative areas of the second movable electrode piece and the static electrode piece are changed, thereby changing the capacitance value of the first capacitor and the capacitance value of the second capacitor.
2. the static electrode piece has an extension direction, the first movable electrode piece and the second movable electrode piece are arranged at an interval along the extension direction, and the extension direction intersects with a thickness direction of the circuit board; a projection of the first movable electrode piece and a projection of the static electrode piece at least partially overlap each other along a thickness direction of the circuit board, and the overlapping portion is a first portion; a projection of the second movable electrode piece and a projection of the static electrode piece at least partially overlap each other along the thickness direction of the circuit board, and the overlapping portion is a second portion; 2. The capacitive joystick device according to claim 1, wherein, when the joystick assembly swings, the first movable electrode piece and the second movable electrode piece simultaneously move along the extension direction relative to the stationary electrode piece, increasing the area of the first portion and decreasing the area of the second portion, or decreasing the area of the first portion and increasing the area of the second portion.
3. The first movable electrode piece and the second movable electrode piece each include an electrode piece body and an elastic member, the electrode piece body and the static electrode piece of the first movable electrode piece are spaced apart along the thickness direction of the circuit board, and the electrode piece body and the static electrode piece of the second movable electrode piece are spaced apart along the thickness direction of the circuit board, The elastic member includes a connecting portion and an arc-shaped contact portion, the connecting portion being connected to the electrode piece body; The arc-shaped contact portion is configured to protrude toward the circuit board; The capacitive joystick device according to claim 1 , wherein the arc-shaped contact portion makes elastic contact with the circuit board to achieve electrical connection.
4. The static electrode piece has an extension direction, When the joystick assembly swings, the first movable electrode piece and the second movable electrode piece simultaneously move in conjunction with each other along the extension direction relative to the static electrode piece, The number of the elastic members is two, 4. The capacitive joystick device according to claim 3, wherein the two elastic members are arranged with a gap therebetween in a direction perpendicular to the extension direction and perpendicular to the thickness direction of the circuit board.
5. The number of the detection assemblies is two sets; one set of the detection assemblies is located on one side of the joystick assembly along a first direction, and the other set of the detection assemblies is located on the other side of the joystick assembly along a second direction; The capacitive joystick device according to claim 1 , wherein the first direction, the second direction, and the thickness direction of the circuit board intersect with each other two by two.
6. the capacitive joystick device further includes a capacitive tip; the capacitance chip is mounted on the circuit board and electrically connected to the circuit board; the first movable electrode piece, the second movable electrode piece, and the static electrode piece are electrically connected to the capacitance chip, respectively; The capacitive joystick device according to claim 1 , wherein the capacitance chip is used to obtain a capacitance value of the first capacitor and a capacitance value of the second capacitor and output a detection signal.
7. the detection assembly further includes a connecting member; the connecting member includes an assembly portion, a first mounting portion, and a second mounting portion; the assembly is connected to the joystick assembly; the first mounting portion is fixedly connected to the first movable electrode piece, The capacitive joystick device according to claim 1 , wherein the second mounting portion is fixedly connected to the second movable electrode piece.
8. a stopper groove is provided in each of the first mounting portion and the second mounting portion; Each of the first movable electrode piece and the second movable electrode piece includes an electrode piece body and a fixed portion connected to the electrode piece body, the fixing portion of the first movable electrode piece is assembled into the stopper groove of the first mounting portion to fixedly connect the first movable electrode piece and the connecting member; The capacitive joystick device according to claim 7, characterized in that the fixing portion of the second movable electrode piece is assembled into the stopper groove of the second mounting portion, thereby fixedly connecting the second movable electrode piece and the connecting member.
9. the joystick assembly includes a joystick body, an operation unit, and a rocker provided on the operation unit; The operation unit is movably connected to the joystick body, and the joystick body presses and swings the operation unit; the oscillator has a mounting groove along a thickness direction of the circuit board, and the assembly part is provided in the mounting groove; 8. The capacitive joystick device according to claim 7, wherein the side walls of the mounting groove act as a stopper to prevent the assembly from moving relative to the oscillator in a plane perpendicular to the thickness direction of the circuit board.
10. A steering wheel remote controller comprising the capacitance type joystick device according to any one of claims 1 to 9.