Pressure sensor and game controller

Abstract

This invention discloses a pressure sensor and a game controller. The pressure sensor includes a housing, an active component, a driven component, and a sensing assembly. The active component is retractably mounted in the housing; the driven component is movably mounted in the housing, and the driven component is linked to the active component. The sensing assembly includes a transmitting electrode and a receiving electrode arranged opposite to each other and spaced apart along a first direction. One of the transmitting and receiving electrodes is connected to the driven component and can move with it, while the other remains fixed relative to the housing. A capacitance is formed between the transmitting and receiving electrodes. The pressure sensor proposed in this invention can achieve small displacement pressure detection. Compared with the FSR scheme, the slope change of the output curve can divide more effective recognition intervals, improve the continuity of pressure detection, and enhance the user experience.

Description

Technical Field

[0001] This invention relates to the field of pressure sensors, and particularly to a pressure sensor and a game controller. Background Technology

[0002] With the increasing variety of gaming applications, especially VR games, people want a richer gaming experience and a greater sense of immersion. As a result, user grip strength detection is being incorporated into more and more product designs.

[0003] Existing products mostly use the Force Sensitive Resistor (FSR) solution for grip strength detection. However, this solution has the problem that the initial pressure resistance decreases too quickly and the resistance changes too slowly in the later stages, resulting in an insufficient effective travel and a limited continuous detection range, which cannot well reflect the continuous changes in the user's grip strength. Summary of the Invention

[0004] The main objective of this invention is to provide a pressure sensor and game controller, which aims to improve the continuity of pressure detection and enhance the user experience.

[0005] To achieve the above objectives, the present invention provides a pressure sensor comprising:

[0006] case;

[0007] The active component is retractably mounted on the housing.

[0008] A driven member is rotatably disposed on the housing, and the driven member is linked to the driving member;

[0009] The sensing component includes a transmitting electrode and a receiving electrode that are opposite to and spaced apart along a first direction. One of the transmitting electrode and the receiving electrode is connected to the follower and can move with the follower, while the other is fixed relative to the housing. A capacitance is formed between the transmitting electrode and the receiving electrode.

[0010] When the active component is subjected to an external force, it causes the driven component to rotate relative to the housing. The overlapping area of ​​the transmitting electrode and the receiving electrode along the first direction changes, and the capacitance between the transmitting electrode and the receiving electrode changes, so that the sensing component outputs a corresponding capacitance sensing signal.

[0011] Optionally, under the drive of the active component, the transmitting electrode and the receiving electrode can rotate relative to each other or move linearly.

[0012] Optionally, the pressure sensor further includes a spring-loaded component, which is disposed in the housing and connected to the driven member, for automatically returning to its original position when the driving member is not subjected to external force; the spring-loaded component is configured as a spring, torsion spring, sheet spring, or silicone pad.

[0013] Optionally, both the transmitting electrode and the receiving electrode are configured as conductive sheets, which are arranged in an arc-shaped plate structure or a straight plate structure.

[0014] Optionally, the housing has a cavity and a guide opening communicating with the cavity, and a portion of the active member extends out of the cavity from the guide opening;

[0015] The active component is provided with a first limiting member placed inside the cavity. The rebound member generates a pre-tightening force acting on the active component. When the active component is not subjected to external force, the first limiting member abuts against the inner wall of the cavity to position the maximum length of the active component extending out of the housing.

[0016] Optionally, a second limiting member is further provided inside the housing. The second limiting member is positioned between the first limiting member and the driven member. The projections of the first limiting member and the second limiting member along the moving direction of the driving member at least partially overlap. The second limiting member is used to position the minimum length of the driving member extending out of the housing.

[0017] Optionally, the pressure sensor further includes a transmission component disposed between the driving member and the driven member. When the driving member is compressed by an external force, the driving member drives the driven member to rotate through the transmission component. The transmission component includes a gear or a belt.

[0018] Optionally, the pressure sensor further includes a lead-out component, which is electrically connected to the transmitting electrode and the receiving electrode respectively; the lead-out component is configured as a terminal, a wire-to-board connector, a wire, a flexible board, or a soldered terminal.

[0019] Optionally, there is one transmitting electrode and multiple receiving electrodes. The multiple receiving electrodes are arranged along a preset trajectory. When the transmitting electrode is on the preset trajectory, it can form one or more capacitors with the multiple receiving electrodes.

[0020] The present invention also proposes a game controller, including any of the pressure sensors described above.

[0021] This invention employs a linkage between an active and a passive component. When the portion of the active component extending outside the housing is subjected to external pressure, it retracts relative to the housing, causing the passive component to move relative to the housing. This changes the overlap area of ​​the transmitting and receiving electrodes along a first direction, resulting in a change in the capacitance between the transmitting and receiving electrodes. This generates a corresponding capacitance sensing signal, which is connected to a main control unit located outside the pressure sensor via a lead or terminal. The main control unit determines the user's pressing pressure based on the change in this capacitance sensing signal. By having the active component drive the passive component to rotate, the capacitance between the transmitting and receiving electrodes is indirectly altered, leading to different capacitance sensing signals. This ensures a sufficient differential pressure output range even with small displacements of the active component, enabling small-displacement pressure detection. Compared to the FSR (Force Sensitive Resistor) scheme, the slope of the output curve can divide more effective recognition intervals, improving the continuity of pressure detection and enhancing the user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of one embodiment of the pressure sensor of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of one embodiment of the pressure sensor of the present invention;

[0025] Figure 3 for Figure 2 Another structural schematic diagram of the central driving component and transmission component;

[0026] Figure 4 This is a schematic diagram of one embodiment of the pressure sensor of the present invention.

[0027] Explanation of icon numbers:

[0028] label name label name 10 pressure sensor 310 Rotating part 100 case 320 Power arm 101 cavity 400 Sensing components 102 Guide port 410 Emitting electrode 200 Active component 420 Receiving electrode 210 First limiting component 500 Springback component 300 Follower 500A spring 600 terminal 610 Electrical connection wires

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] This invention proposes a pressure sensor 10, which aims to solve the problem that the pressure sensor 10 in the prior art cannot well reflect the continuous changes in the user's grip strength.

[0034] In embodiments of the present invention, such as Figure 1-4 As shown, the pressure sensor 10 includes a housing 100, an active component 200, a driven component 300, and a sensing assembly 400. The active component 200 is retractably mounted on the housing 100, and the driven component 300 is rotatably mounted on the housing 100 and linked with the active component 200. The sensing component 400 includes a transmitting electrode 410 and a receiving electrode 420 that are opposite to each other and spaced apart along a first direction. One of the transmitting electrode 410 and the receiving electrode 420 is connected to the driven component 300 and can move with the driven component 300, while the other remains fixed relative to the housing 100. A capacitor is formed between the transmitting electrode 410 and the receiving electrode 420. When the active component 200 is subjected to an external force, it drives the driven component 300 to move relative to the housing 100. The overlapping area of ​​the transmitting electrode 410 and the receiving electrode 420 along the first direction changes, and the capacitance between the transmitting electrode 410 and the receiving electrode 420 changes, causing the sensing component 400 to output a corresponding capacitance sensing signal.

[0035] In this embodiment, one of the transmitting electrode 410 and the receiving electrode 420 is connected to the driven member 300 and can move with the driven member 300, while the other remains fixed relative to the housing 100. For example, the transmitting electrode 410 can be connected to the driven member 300, and the receiving electrode 420 can be fixed relative to the housing 100; alternatively, the receiving electrode 420 can be connected to the driven member 300, and the transmitting electrode 410 can be fixed relative to the housing 100. The key is to ensure that when the driven member 300 moves, a relative displacement occurs between the transmitting electrode 410 and the receiving electrode 420, causing a change in their overlapping area. It should be noted that the overlapping area refers to the area of ​​the overlapping portions of the transmitting and receiving sensors. In the following embodiments, the transmitting electrode 410 is fixed to the driven member 300, and the receiving electrode 420 is fixed relative to the housing 100, as an example for explanation.

[0036] Optionally, the housing 100 forms the main support structure of the pressure sensor 10. The housing 100 can be designed as square, plate-shaped, or other shapes according to actual needs. The active member 200 and the driven member 300 can be placed on the surface of the housing 100 or disposed within the housing 100; no specific limitation is made here. For example, the housing 100 has a plate-like structure, with the active member 200 slidingly mounted on the upper surface of the housing 100 along its length, and the driven member 300 and the sensing assembly 400 both mounted on the upper surface of the housing 100. Another example is that the housing 100 is rectangular, with components such as the driven member 300 and the sensing assembly 400 installed inside the housing 100. Figure 2 As shown, the housing 100 has a cavity 101 and a guide port 102 communicating with the cavity 101; the driven member 300 is disposed within the cavity 101; the driving member 200 has a plate-like structure, is disposed within the cavity 101, and partially extends out of the housing 100 from the guide port 102. Thus, when the pressure sensor 10 is subjected to external pressure, the driving member 200 moves (retracts) relative to the housing 100 into the cavity 101 along the guide port 102, causing the driven member 300 to rotate, resulting in a relative displacement between the transmitting electrode 410 and the receiving electrode 420, causing a change in their overlapping area in the first direction. In this embodiment, taking the movement direction of the driving member 200 as the Z-direction as an example, the first direction can be the Z-direction (e.g., Figure 2 As shown), the first direction can also be the Y direction.

[0037] It should be noted that the driving member 200 is used here to connect or abut with the external component, playing a role in force transmission and driving the driven member 300 to slide or rotate. The driving member 200 can be designed as a sliding plate, piston rod, or other shapes according to actual needs.

[0038] There are various ways to arrange the relative movement of the transmitting electrode 410 and the receiving electrode 420. In one embodiment, such as... Figure 4 As shown, under the drive of the active member 200, the receiving electrode 420 and the transmitting electrode 410 can slide relative to each other. Specifically, the active member 200 is movably mounted on the housing 100 along the Z direction, and the driven member 300 is a square sliding plate that is slidably mounted on the housing 100 along the Y direction. The inclined surfaces of the active member 200 and the driven member 300 abut against each other, so that when the active member 200 retracts relative to the housing 100 along the Z direction under the action of external force, it pushes the driven member 300 to move along the Y direction, thereby causing the overlapping area between the transmitting electrode 410 and the receiving electrode 420 to change, and outputting a corresponding capacitive sensing signal.

[0039] Or, such as Figure 2 and Figure 3 As shown, under the drive of the active member 200, the receiving electrode 420 and the transmitting electrode 410 can rotate relative to each other. Specifically, the active member 200 is movably mounted on the housing 100 along the Z direction, and the driven member 300 can be a structural component such as a rotating shaft, which is rotatably mounted on the housing 100 along the Y direction. When the active member 200 retracts relative to the housing 100 along the Z direction under the action of an external force, it pushes the driven member 300 to rotate counterclockwise along the Y direction, thereby causing a change in the overlapping area between the transmitting electrode 410 and the receiving electrode 420, and outputting a corresponding capacitive sensing signal.

[0040] The pressure sensor 10 works as follows: When the user presses the sensor, the active component 200 contracts, causing the driven component 300 to rotate or move. The rotation of the driven component 300 causes the transmitting electrode 410 on the driven component 300 to move, changing the overlap area of ​​the transmitting electrode 410 and the receiving electrode 420 in the first direction. This changes the capacitance between the transmitting electrode 410 and the receiving electrode 420, resulting in the output of different capacitance sensing signals. Both the transmitting electrode 410 and the receiving electrode 420 are electrically connected to the main control chip located outside the pressure sensor 10. The touch chip sends the received capacitance sensing signals to the main control chip, which determines the user's pressing pressure based on the change in the RX received value.

[0041] The technical solution of this invention employs a linkage between the active component 200 and the driven component 300. When the portion of the active component 200 extending outside the housing 100 is subjected to external pressure, it retracts relative to the housing 100, causing the driven component 300 to move relative to the housing 100. This, in turn, changes the overlapping area of ​​the transmitting electrode 410 and the receiving electrode 420 along the first direction. Consequently, the capacitance between the transmitting electrode 410 and the receiving electrode 420 changes, resulting in the output of a capacitance sensing signal of corresponding magnitude. This capacitance sensing signal is electrically connected to the main control unit located outside the pressure sensor 10 via a lead wire or terminal 600. The main control unit determines the user's pressing pressure based on the change in this capacitance sensing signal. The active element 200 drives the driven element 300 to rotate, thereby indirectly changing the capacitance between the transmitting electrode 410 and the receiving electrode 420, and thus outputting different capacitance sensing signals. In this way, the active element 200 has a sufficient differential pressure output range even when the displacement is small, which can realize small displacement pressure detection. Compared with the FSR (Force Sensitive Resistor) scheme, the slope change of the output curve can divide more effective recognition intervals, improve the continuity of pressure detection, and enhance the user experience.

[0042] In one embodiment, both the receiving electrode 420 and the transmitting electrode 410 are made of conductive sheets, such as FPC or steel sheets. Thus, the receiving electrode 420 and the transmitting electrode 410 have a simple structure and small size, achieving high sensitivity while allowing the pressure sensor 10 to be relatively smaller in size.

[0043] It is understood that, in one embodiment, when the driven member 300 slides relative to the housing 100, the movement trajectory of the transmitting electrode 410 fixed thereon is a straight trajectory. At this time, both the transmitting electrode 410 and the receiving electrode 420 are set as straight plate-shaped electrode sheets. Under the action of external pressure, as the driving member 200 retracts and drives the driven member 300 to slide, the overlapping area of ​​the transmitting electrode 410 and the receiving electrode 420 changes linearly. The external main controller can distinguish more levels based on its output capacitance sensing signal, thereby having a better pressure continuity detection range and bringing a better experience to the user.

[0044] In one embodiment, when the driven member 300 rotates relative to the housing 100, the movement trajectory of the transmitting electrode 410 fixed thereon is an arc-shaped trajectory. At this time, both the transmitting electrode 410 and the receiving electrode 420 are set as arc-shaped electrode plates. Under the action of external pressure, as the driving member 200 retracts and drives the driven member 300 to rotate, the overlapping area of ​​the transmitting electrode 410 and the receiving electrode 420 also changes linearly. The external main controller can distinguish more levels based on its output capacitance sensing signal, thereby having a better pressure continuity detection range and bringing a better experience to the user.

[0045] Furthermore, to minimize the distance the driving member 200 moves, the rotation angle of the driven member 300 is relatively large. In this embodiment, such as... Figure 3 As shown, the driven member 300 is a rotating shaft, including a disc-shaped rotating part 310 and a plate-shaped transmission arm 320. The rotating part 310 can rotate on the housing 100 by means of a shaft pin, etc. The opposite sides of the transmission arm 320 are respectively used for the spring 500A and the driving member 200 to abut against each other. In this way, the position of the rotating shaft can achieve a larger rotation angle change within a smaller displacement of the driving member 200, thereby achieving the purpose of a small stroke and a large effective output range.

[0046] In one embodiment, the pressure sensor 10 further includes a spring-loaded member 500, which is disposed in the housing 100 and connected to the driven member 300, for automatically returning to its original position when the driving member 200 is not subjected to external force; the spring-loaded member 500 includes a spring 500A, a torsion spring, a spring sheet, or a silicone pad. Specifically, in this embodiment, as... Figure 2 As shown, taking the spring 500A as the spring mechanism and the driven member 300 rotatably mounted on the housing 100 as an example, one end of the spring 500A is mounted on the housing 100, and the other end is connected to the end of the driven member 300 opposite to the driving member 200. When the driving member 200 is subjected to external pressure, it retracts, causing the driven member 300 to rotate counterclockwise along the Y direction. At this time, the spring 500A is compressed and stores energy, providing a pressure experience to the user. Furthermore, when the external pressure on the driving member 200 is released or the user applies less pressure, the spring 500A is compressed and rebounds. Under the counterforce provided by the spring 500A, the driven member 300 rotates clockwise along the Y direction, thereby pushing the driving member 200 back to its initial position, ensuring that the position of the driving member 200 can detect changes in the user's gripping force in real time.

[0047] It should be noted that in other embodiments of the present invention, the spring-loaded component 500 may also be a tension member or other structure. For example, if the spring-loaded component 500 is a tension spring, one end of it is fixedly connected to the housing 100, and the other end is connected to the driven member 300. When the user presses down, causing the active member 200 to retract, the tension spring is stretched, and when the external pressure on the active member 200 is released, the tension spring rebounds, restoring the active member 200 to its original position. The specific structure of the spring-loaded component 500 is not limited here, as long as the elastic component can realize the spring-loaded function of the active member 200 and ensure that the active member 200 can detect changes in the user's gripping force in real time.

[0048] It should be noted that the driving member 200 and the driven member 300 can be directly abutted, or they can be connected by hinge or sliding, etc. There is no limitation here. It is only necessary that the driving member 200 can retract when subjected to external pressure and drive the driven member 300 to rotate.

[0049] In one embodiment, the housing 100 has a cavity 101 and a guide port 102 communicating with the cavity 101. A portion of the active member 200 extends out of the cavity 101 from the guide port 102. The active member 200 is provided with a first limiting member 210 placed inside the cavity 101. The spring-loaded member 500 generates a preload force acting on the active member 200. When the active member 200 is not subjected to external force, the first limiting member 210 abuts against the inner wall of the cavity 101 to position the maximum length of the active member 200 extending out of the housing 100.

[0050] In this embodiment, both the transmission component and the sensing assembly 400 are installed within the cavity 101. The first limiting member 210 can be an annular plate formed by the radial protrusion of the active member 200 along the guide opening 102, with a diameter larger than the diameter of the guide opening 102, to prevent the active member 200 from disengaging from the guide opening 102. Taking the spring 500 as an example, when the active member 200 is not subjected to external force, the spring 500 is in a pre-compressed state, causing the side of the first annular plate facing the guide opening 102 to abut against the inner wall of the cavity 101 where the guide opening 102 is located. This achieves the effect of positioning the maximum length of the active member 200 extending out of the cavity 101, resulting in better product consistency and preventing the active member 200 from disengaging from the cavity 101.

[0051] It should be noted that in other embodiments, the first limiting member 210 may also be block-shaped, plate-shaped, rod-shaped, or other irregular shapes, etc., which are not limited here, as long as it can play the role of positioning the maximum length of the active member 200 extending out of the housing 100.

[0052] Based on the previous embodiment, a second limiting member (not shown) is further provided inside the cavity 101. The second limiting member is positioned between the first limiting member 210 and the driven member 300. The projections of the first limiting member 210 and the second limiting member along the moving direction of the active member 200 at least partially overlap. The second limiting member is used to position the minimum length of the active member 200 extending out of the housing 100. When the external component applies a large thrust to the active member 200, the active member 200 retracts, and the first limiting member 210 abuts against the second limiting member, preventing the active member 200 from being completely pressed into the housing 100. In this way, the minimum length of the active member 200 extending out of the housing 100 can be positioned. By determining the range of motion of the first limiting member 210 within the cavity 101, the variation range of the transmitting electrode 410 and the receiving electrode 420 fixedly mounted on the driven member 300 can be determined. The specific structure of the second limiting member is not limited here; it only needs to be able to position the minimum length of the detection plate extending out of the housing 100. For example, the second limiting member is a circular plate, the outer peripheral wall of which is connected to the inner wall of the housing 100. The circular plates shown have a clearance opening for the active member 200 to pass through. The clearance opening is coaxially arranged with the guide opening 102 and at the same time guides the active member 200, further ensuring the reliability of the movement of the active member 200.

[0053] In one embodiment, the pressure sensor 10 further includes a transmission component disposed between the driving member 200 and the driven member 300. When the driving member 200 is compressed by an external force, it drives the driven member 300 to rotate via the transmission component. Thus, the driving member 200 can achieve a larger effective output range within a smaller stroke range. By adding a transmission component for force transmission, the driving member 200 indirectly drives the driven member 300 to rotate, resulting in a larger rotation angle of the driven member 300 for a given displacement distance of the driving member 200. This leads to a larger variation range in the overlap area between the transmitting electrode 410 and the receiving electrode 420, increasing the effective output. The transmission component can be a gear or belt.

[0054] In one embodiment, such as Figure 1-3 As shown, the pressure sensor 10 also includes an output component, which is electrically connected to the transmitting electrode 410 and the receiving electrode 420 respectively. The output structure can be a terminal 600, a wire-to-board connector, a wire, a flexible circuit board, or a soldered terminal 600, etc., as long as it can transmit the capacitive sensing signal generated by the change in the overlapping area between the transmitting electrode 410 and the receiving electrode 420 to the external main controller. The main controller determines the user's pressure change by judging the output value of the sensing component 400.

[0055] Specifically, as shown in the figure, in this embodiment, the lead-out structure is a terminal 600. The terminal 600 is placed outside the housing 100 and is connected to the transmitting electrode 410 and the receiving electrode 420 respectively through the electrical connection line 610. The terminal 600 is connected to the touch chip. The touch chip sends the received signal to the main control chip. The main control chip determines the user's pressing pressure based on the change of the RX received value.

[0056] Furthermore, the touch chip has a transmitting channel (TX) and a receiving channel (RX). One of the transmitting electrode 410 and the receiving electrode is connected to the transmitting channel (TX), and the other is connected to the receiving channel (RX). Alternatively, a single touch channel (CH) with ground (GND) can be used instead of the two channels TX and RX, achieving the same function. When the active element 200 retracts, it drives the transmission element to move, causing a change in the capacitance between the transmitting electrode 410 and the receiving electrode 420. The touch chip sends the capacitance sensing signal to the main control element (e.g., MCU), which can then perform data fitting on the capacitance sensing signal according to a preset program or algorithm to generate the joystick's motion information.

[0057] In one embodiment, there is one transmitting electrode 410 and multiple receiving electrodes 420. The multiple receiving electrodes 420 are arranged along a preset trajectory. When the transmitting electrode 410 is on the preset trajectory, it can form one or more capacitors with the multiple receiving electrodes 420. For example, the transmitting electrode 410 is fixed to a movable part, and the multiple receiving electrodes 420 are fixed to the housing 100 at intervals. The number of transmitting electrodes 410 can be 2, 3, 4, or more. The specific design can be based on the detection accuracy requirements of the pressure sensor 10, and is not limited here. Taking two transmitting electrodes 410 spaced apart as an example, they are defined as the first receiving electrode 420 and the second receiving electrode 420, respectively. When the user presses, the active member 200 contracts and drives the driven member 300 to rotate. The rotation of the driven member 300 drives the transmitting electrode 410 on the driven member 300 to move. The overlapping area of ​​the transmitting electrode 410 with the first receiving electrode 420 and the second receiving electrode 420 in the first direction changes, thereby changing the detection signal values ​​of the first receiving electrode 420 and the second receiving electrode 420. The first receiving electrode 420 and the second receiving electrode 420 respectively output a capacitive sensing signal. The external main controller performs difference calculation based on the capacitive sensing signals output by the first receiving electrode 420 and the second receiving electrode 420 respectively, so that the detection accuracy of the user's pressing pressure is higher.

[0058] The present invention also proposes a game controller, which includes a pressure sensor 10. The specific structure of the pressure sensor 10 is as described in the above embodiments. Since this game controller adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pressure sensor, characterized in that, include: case; The active component is retractably mounted on the housing. The driven member is movably disposed in the housing, and the driven member is linked with the driving member; The sensing component includes a transmitting electrode and a receiving electrode that are opposite to and spaced apart along a first direction. One of the transmitting electrode and the receiving electrode is connected to the follower and can move with the follower, while the other is fixed relative to the housing. A capacitance is formed between the transmitting electrode and the receiving electrode. When the active component is subjected to an external force, it causes the driven component to rotate relative to the housing, the overlapping area of ​​the transmitting electrode and the receiving electrode changes, and the capacitance between the transmitting electrode and the receiving electrode changes, so that the sensing component outputs a corresponding capacitance sensing signal.

2. The pressure sensor as described in claim 1, characterized in that, Driven by the active component, the transmitting electrode and the receiving electrode can rotate relative to each other.

3. The pressure sensor as described in claim 2, characterized in that, The pressure sensor also includes a spring-loaded component, which is disposed in the housing and connected to the driven component, and is used to automatically return to its original position when the driving component is not subjected to external force; the spring-loaded component is configured as a spring, torsion spring, spring sheet, or silicone pad.

4. The pressure sensor as described in claim 1, characterized in that, Both the transmitting electrode and the receiving electrode are configured as conductive sheets, and the conductive sheets are configured in an arc-shaped plate structure.

5. The pressure sensor as described in claim 3, characterized in that, The housing has a cavity and a guide opening communicating with the cavity, and a portion of the active member extends out of the cavity from the guide opening; The active component is provided with a first limiting member placed inside the cavity. The rebound member generates a pre-tightening force acting on the active component. When the active component is not subjected to external force, the first limiting member abuts against the inner wall of the cavity to position the maximum length of the active component extending out of the housing.

6. The pressure sensor as described in claim 5, characterized in that, The housing is further provided with a second limiting member, which is placed between the first limiting member and the driven member. The projections of the first limiting member and the second limiting member along the moving direction of the driving member overlap at least partially. The second limiting member is used to position the minimum length of the driving member extending out of the housing.

7. The pressure sensor as described in claim 1, characterized in that, The pressure sensor further includes a transmission component, which is disposed between the driving member and the driven member. When the driving member is compressed by an external force, the driving member drives the driven member to rotate through the transmission component. The transmission components include gears or belts.

8. The pressure sensor as described in claim 1, characterized in that, The pressure sensor also includes a lead-out component, which is electrically connected to the transmitting electrode and the receiving electrode respectively; the lead-out component is configured as a terminal, a wire, or a flexible circuit board.

9. The pressure sensor according to any one of claims 1-8, characterized in that, The receiving electrodes are multiple and arranged along a preset trajectory. When the transmitting electrode is on the preset trajectory, it can form one or more capacitors with the multiple receiving electrodes.

10. A game controller, characterized in that, Including the pressure sensor as described in any one of claims 1-9.

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