Computer mouse device
By setting an equipotential conductive structure and conductive parts on the mouse wheel to form a capacitor structure, and combining it with an encoder module to monitor scrolling information, the problems of friction noise and unnatural control of traditional mouse wheels are solved, achieving seamless operation and inertial sliding experience, improving user experience and device lifespan.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CHEERDOTS CO LTD
- Filing Date
- 2025-11-14
- Publication Date
- 2026-05-21
AI Technical Summary
Traditional mouse scroll wheels rely on physical contact encoders or optical sensors, resulting in friction noise, wear and unnatural scrolling control. They are also difficult to distinguish between finger touch, active scrolling and inertial scrolling without physical contact, affecting accuracy and user experience.
Employing non-contact capacitive sensing technology, a capacitive structure is formed by setting conductive structures and conductive parts arranged with equal potential on the roller. Combined with the encoder module to monitor rolling information, it can identify the state of finger touch or removal in real time, distinguish the rolling mode and switch to inertial deceleration rolling to achieve seamless control.
It reduces operational jerking, minimizes mechanical wear, extends device lifespan, and provides a touchscreen-like inertial gliding experience.
Smart Images
Figure CN2025135194_21052026_PF_FP_ABST
Abstract
Description
A mouse device
[0001] Cross-references
[0002] This application claims priority to Chinese Patent Application No. CN2024116356128, filed November 15, 2024, entitled "A Control Method and Device for Mouse Inertial Scrolling", filed November 15, 2024; Chinese Patent Application No. CN2024227919432, filed November 15, 2024, entitled "A Mouse with Inertial Scrolling Function", filed November 14, 2025, entitled "A Mouse", the entire disclosure of which is incorporated herein by reference. Technical Field
[0003] This application relates to the field of communication technology, and more particularly to a mouse device. Background Technology
[0004] Traditional mouse scroll wheels typically rely on physical contact encoders or optical sensors to detect scrolling motions. These methods are prone to friction noise and component wear during scrolling, and cannot accurately detect changes in the contact state between the finger and the scroll wheel. When the user stops scrolling, the page stops immediately, lacking the inertial gliding experience of a touchscreen. Some solutions attempt optimization through mechanical structures or additional sensors, but they struggle to distinguish between finger touch, active scrolling, and inertial scrolling in real time without physical contact. This results in less natural and smooth scrolling control, and long-term use can lead to reduced accuracy due to contact wear, necessitating improvement.
[0005] Application content
[0006] To address the technical problems existing in the background art, this application proposes a mouse device.
[0007] This application proposes a mouse device, including a mouse body and a scroll wheel. The scroll wheel is rotatably mounted on the mouse body. The scroll wheel has a contact area that can be driven by a finger to make the scroll wheel roll. The scroll wheel has a first conductive structure and a first conductive part arranged with equal potential.
[0008] The mouse body includes a first conductor and a capacitive sensor. The first conductor has a second conductive part, and the second conductive part and the first conductive part form a capacitive structure. The capacitive sensor is connected to the second conductive part. The first conductive structure is arranged in association with the contact area so that the capacitive sensor can obtain the capacitance change information of the capacitive structure when the finger touches or leaves the scroll wheel in real time.
[0009] The first conductive structure is a metal coating or a conductive silicone layer on the outer peripheral wall of the roller.
[0010] The first conductive structure has a protective layer on its exterior.
[0011] The distance between the second conductive part and the first conductive part is L, where 0.1mm < L < 10mm.
[0012] Among them, the first conductive part belongs to the first conductive structure.
[0013] Among them, the cross section of the second conductive part perpendicular to the roller axis is an arc whose center falls on the roller axis.
[0014] The roller has a second conductive structure arranged at the same potential as the first conductive structure, and the first conductive part belongs to the second conductive structure.
[0015] The mouse body also includes: a shell, a circuit board, and a controller. The controller and the capacitive sensor are both mounted on the circuit board, which is installed inside the shell. The capacitive sensor is mounted on the circuit board and located inside the shell. The capacitive sensor transmits capacitance change information to the controller through the circuit board. The sensing end of the capacitive sensor can be directly connected to the first conductor or connected to the first conductor through the circuit board to realize the electrical connection between the sensing end of the capacitive sensor and the second conductive part.
[0016] The mouse body also includes an encoder module, which is installed inside the housing. The encoder module can acquire the scrolling information of the scroll wheel in real time and transmit the scrolling information to the controller through the circuit board.
[0017] The scroll wheel is rotatably mounted on the mouse body via a fixed axis. The fixed axis is installed inside the housing and fixed to the housing. The scroll wheel is rotatably mounted on the fixed axis, and the encoder module is fixed on the fixed axis.
[0018] The controller includes a first control module and a second control module. Both the first and second control modules are connected to a circuit board. The first control module communicates with the encoder module through the circuit board to receive the rolling information of the roller. The capacitive sensor communicates with the second control module through the circuit board to receive the capacitance change information of the capacitive structure.
[0019] This application utilizes non-contact capacitive sensing technology, employing a capacitive structure formed by the second and first conductive parts of the mouse, along with a capacitive sensor, to capture real-time capacitance changes when a finger touches or leaves the mouse. This accurately identifies changes in contact state and is unaffected by the physical scrolling of the scroll wheel. Combined with scrolling information monitored by the encoder module, it intelligently distinguishes between active driving, inertial scrolling, and stationary states, automatically switching to simulated inertial deceleration scrolling mode after the user stops operation, resulting in more natural page scrolling. A light touch of the scroll wheel immediately pauses scrolling, achieving seamless control, significantly reducing operational jerks, minimizing mechanical wear, and extending device lifespan. Attached Figure Description
[0020] Figure 1 is a three-dimensional structural schematic diagram of a mouse device proposed in this application;
[0021] Figure 2 is a schematic diagram of the structure of a mouse device according to the present application in a first embodiment;
[0022] Figure 3 is a schematic diagram of the structure of a mouse device according to the present application in a second embodiment;
[0023] Figure 4 is a control principle diagram of a mouse device proposed in this application. Detailed Implementation
[0024] The technical solution of this application will be described in detail below through specific embodiments. However, it should be clearly stated that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application.
[0025] Referring to Figures 1-4, a mouse device proposed in this application includes: a mouse body 1 and a scroll wheel 2, wherein the scroll wheel 2 is rotatably mounted on the mouse body 1.
[0026] The roller 2 has a contact area 24 that can be driven by a finger to make the roller 2 roll, and the roller 2 has a first conductive structure 22 and a first conductive part 21 arranged with equal potential.
[0027] The mouse body 1 includes a first conductor 3 and a capacitive sensor 4. The first conductor 3 has a second conductive part 31, and the second conductive part 31 and the first conductive part 21 form a capacitive structure 11.
[0028] The capacitive sensor 4 is connected to the second conductive part 31; the first conductive structure 22 is arranged in association with the contact area 24 so that the capacitive sensor 4 can obtain the capacitance change information of the capacitive structure 11 when the finger touches or leaves the roller 2 in real time.
[0029] The above solution can achieve contactless monitoring of the initial touch or initial detachment of a finger from the roller, so that the components related to the monitoring are not affected by the rolling of the roller 2.
[0030] The first conductive structure 22 is a metal coating or conductive silicone layer on the outer peripheral wall of the roller 2. The first conductive structure 22 is arranged coaxially with the roller 2. This can be one specific embodiment in which the first conductive structure 22 is associated with the contact area 24. The outer peripheral wall of the first conductive structure 22 can serve as the contact area 24 of the roller 2.
[0031] The first conductive structure 22 has a protective layer on its outside. This can be another specific implementation of the arrangement of the first conductive structure 22 and the contact area 24. The protective layer can not only protect the first conductive structure 22, but also improve the feel and friction by selecting materials. Here, the outer peripheral wall of the protective layer can serve as the contact area 24.
[0032] In practical applications, the distance between the second conductive part 31 and the first conductive part 21 is L. Experiments have shown that when the distance L is less than 0.1 mm, the roller 2 may come into contact with the second conductive part 31 due to slight deformation or dust during long-term use. In this contact, friction will hinder the roller's rolling, and a short circuit will occur, causing the capacitance change to be overly sensitive and leading to false detection by the capacitance sensor. When the distance L is greater than 10 mm, the capacitance change signal is too weak to be reliably detected by the capacitance sensor 4. Therefore, the preferred range for L is 0.1 mm < L < 10 mm, to ensure detection sensitivity and prevent additional resistance from friction on the roller.
[0033] In one embodiment of this application, the first conductive structure 22 and the first conductive part 21 arranged at the same potential are arranged as follows: the first conductive part 21 belongs to the first conductive structure 22. Since the two are subordinate to each other and belong to the same structure, they constitute the same potential.
[0034] Referring to Figure 2, the cross-section of the second conductive part 31 perpendicular to the axis of the roller 2 is an arc whose center falls on the axis of the roller 2. The center of this arc coincides with the center of the projection of the first conductive structure 22 on the same cross-section. That is, when the roller 2 rolls, the position of the first conductive part 21 relative to the stationary second conductive part 31 remains unchanged, but the position of the first conductive part 21 on the first conductive structure 22 that rolls with the roller 2 is constantly changing. In other words, no matter how the roller 2 rolls, a part of the first conductive structure 22 will always become the first conductive part 21 that forms the capacitor structure 11 with the second conductive part 31.
[0035] In another embodiment of this application, the first conductive structure 22 and the first conductive part 21 arranged at the same potential are arranged as follows: the roller 2 has a second conductive structure 23 arranged at the same potential as the first conductive structure 22, and the first conductive part 21 belongs to the second conductive structure 23, which is equivalent to setting a transition structure, namely the second conductive structure 23, so that the second conductive structure 23 and the first conductive structure 22 are arranged at the same potential. That is, the first conductive part 21, which is part of the second conductive structure 23, is used to form a capacitor structure 11 with the second conductive part 31, which can avoid the wear and deformation of the outer peripheral wall of the first conductive structure 22 caused by long-term finger touch from affecting the stability of the capacitor structure 11.
[0036] Referring to Figure 3, the second conductive part 31 can be a metal coating sprayed on one end face of the roller 2, and one side of the first conductor 3 faces the second conductive part 31. At the same time, the sides of the first conductor 3 and the second conductive part 31 opposite each other can be arranged in parallel and spaced apart. In this way, the side of the first conductor 3 close to the second conductive part 31 becomes the second conductive part 31. Similarly, the side of the second conductive structure 23 close to the first conductor 3 will partially become the first conductive part 21. When the roller 2 rolls, the position of the first conductive part 21 relative to the stationary second conductive part 31 remains unchanged, but the position of the first conductive part 21 on the second conductive structure 23 that rolls with the roller 2 is constantly changing. In other words, no matter how the roller 2 rolls, a part of the second conductive structure 23 will always become the first conductive part 21 that forms the capacitor structure 11 with the second conductive part 31.
[0037] When a finger or conductor contacts or approaches the first conductive structure, which has the same potential as the first conductive part, it is equivalent to introducing a new ground terminal or charge source into the capacitor structure 11, thereby changing the electric field distribution and capacitance value of the entire capacitor structure 11. The capacitance sensor 4 converts this change into an electrical signal and transmits it to the controller 9. By analyzing the moment of abrupt change in the electrical signal, the controller 9 can determine that a sudden change has occurred in the positional relationship between the finger and the roller 2. When the capacitance change information changes, the controller 9 can determine that the finger and the roller 2 have changed from a contact state to a non-contact state, or vice versa.
[0038] In a specific embodiment, the mouse body 1 further includes: a shell 7, a circuit board 8, a controller 9, and an encoder module 6. The controller 9 and the capacitive sensor 4 are both mounted on the circuit board 8, which is installed inside the shell 7. The capacitive sensor 4 is mounted on the circuit board 8 and located inside the shell 7. The capacitive sensor 4 transmits capacitance change information to the controller 9 through the circuit board 8. The sensing end of the capacitive sensor 4 can be directly connected to the first conductor 3 or connected to the first conductor 3 through the circuit board 8 to realize the electrical connection between the sensing end of the capacitive sensor 4 and the second conductive part 31. The encoder module 6 is installed inside the shell 7. The encoder module 6 can acquire the scrolling information of the scroll wheel 2 in real time and transmit the scrolling information to the controller 9 through the circuit board 8. The controller 9 includes: a first control module 91 and a second control module 92. The first control module 91 and the second control module 92 are both connected to the circuit board 8. The first control module 91 communicates with the encoder module 6 through the circuit board 8 to receive the scrolling information of the scroll wheel 2, and the capacitive sensor 4 communicates with the second control module 92 through the circuit board 8 to receive the capacitance change information of the capacitive structure 11.
[0039] The first conductor 3 is installed inside the housing 7 and can be fixed on the circuit board 8. The outer wall of the first conductor 3 forms a second conductive part 31. The second conductive part 31 is always parallel to the first conductive part 21 of the roller 2 and the distance between them is constant. The first conductive part 21 and the first conductive structure 22 form an equipotential. The second conductive part 31 and the first conductive part 21 together constitute the two poles of the capacitor structure. The sensing end of the capacitance sensor 4 is electrically connected to the second conductive part 31 to capture the charge fluctuation signal between the two poles of the capacitor in real time, that is, the capacitance change information.
[0040] The encoder module 6 continuously monitors the rolling information of the roller 2, including the rolling direction and rotational speed of the roller 2. The encoder module 6 transmits the rolling information to the controller 9 via the circuit board 8.
[0041] Based on the rolling information and capacitance change information, the controller 9 can determine that the roller 2 is in a stopped rolling state; it can determine that the roller 2 is in a passive rolling state driven by an external force or an inertial rolling state not driven by an external force; it can determine that the roller 2 changes from a stopped rolling state to a passive rolling state; it can determine that the roller 2 changes from a passive rolling state to a stopped rolling state; it can determine that the roller 2 changes from a passive rolling state to an inertial rolling state; and it can determine that the roller 2 changes from an inertial rolling state to a stopped rolling state.
[0042] The states of inertial rolling and stopped rolling are explained as follows:
[0043] In the prior art, one type of roller 2 will stop rolling immediately after losing external driving force, and the roller 2 will enter the stopped rolling state when it stops rolling; another type of roller 2 will not stop rolling immediately after losing external driving force, but will start to decelerate under the action of inertia until it stops, and the roller 2 will enter the inertial rolling state from the passive rolling state; the inertial rolling state of the roller 2 refers to the inertial rolling of the roller 2 after losing external driving force.
[0044] When the rolling speed of roller 2 is greater than zero, if the analysis of the capacitance change information shows that the finger stops contacting roller 2, but roller 2 continues to roll, it can be determined that roller 2 has entered the inertial rolling state from the passive rolling state. Other situations are similar and will not be elaborated further.
[0045] The controller 9 is also used to control the scrollable display area of the terminal connected to the mouse body 1 to scroll in a first scrolling state synchronized with the scroll wheel 2 when the scroll wheel 2 is in a passive scrolling state.
[0046] The specific implementation is as follows: Encoder module 6 continuously detects the rolling information of roller 2 in passive rolling state during the time period T1 to T2; the rolling information includes: the rolling speed corresponding to each timestamp. When roller 2 rolls clockwise, the rolling speed can be considered positive, and when roller 2 rolls counterclockwise, the rolling speed can be considered negative, and vice versa; Controller 9 can control the scrollable display area to be in the first rolling state that is positively correlated with and synchronously rolled with the rolling speed of roller 2 according to the rolling information. That is, the faster the rolling speed of roller 2, the faster the scrollable display area rolls; the slower the rolling speed of roller 2, the slower the scrollable display area rolls.
[0047] When the controller 9 analyzes the information on capacitance change and rolling information and determines that the roller 2 has changed from a passive rolling state to an inertial rolling state or a stopped rolling state, the controller 9 will control the scrollable display area to enter a simulated second rolling state that is independent of the real-time physical state of the roller 2. The second rolling state includes at least one deceleration rolling process.
[0048] The deceleration rolling process included in the second rolling state can be implemented using any of the following methods:
[0049] 1. Deceleration with constant acceleration; the specific implementation is as follows: the scrollable display area always decelerates and scrolls with acceleration a1 until it stops. The scrollable display area always decelerates and scrolls with acceleration a1 until it stops directly after reaching a predetermined value. Since the resistance experienced by the finished mouse body 1 is a constant value, the deceleration and scrolling process of the scrollable display area maintains a constant acceleration that is consistent with the user's operating rhythm, which can improve the user experience.
[0050] 2. Nonlinear acceleration deceleration; the specific implementation is as follows: during the deceleration rolling process, the instantaneous velocity at time T1 is maintained as v = v0 + a2t, where v0 is the initial velocity, a2 is the preset acceleration, t is the time, and a2 ≠ 0.
[0051] 3. Decelerate in stages until stopping. Either a1 or a2 can be dynamically configured on the mouse itself or the terminal.
[0052] Taking adjusting a1 or a2 on the mouse body 1 as an example, the specific implementation is as follows: When the trigger switch on the mouse body 1 is activated, the signal control switch of the mouse body 1 is turned on, thereby cutting off the signal output of the mouse body 1. The size of a1 or a2 is adjusted by scrolling the scroll wheel 2. Based on the state of the scroll wheel 2 at the time of activation, when the scroll wheel 2 is scrolled clockwise, the absolute value of a1 or a2 gradually increases. When the angle of the scroll wheel 2's clockwise scrolling reaches the preset scrolling angle, the absolute value of a1 or a2 reaches its maximum. After a1 or a2 is set, the trigger switch is activated again. At this time, the trigger switch controls the signal control switch of the mouse body 1 to turn off, and the mouse body 1 returns to normal use. Furthermore, the trigger switch for adjusting a1 or a2 can share the same button as the DPI adjustment. It can be set to short press for DPI adjustment, and long press, when the indicator light is on, enter a1 or a2 adjustment. Scrolling the scroll wheel 2 in the forward or reverse direction can make the indicator light brighter or dimmer.
[0053] Furthermore, the second rolling state is initiated based on the cutoff speed of the first rolling state; that is, the initial speed of the second rolling state is based on the cutoff speed of the first rolling state. The specific implementation is as follows:
[0054] When scroll wheel 2 continues to scroll under finger control during the time interval T1 to T2, scroll wheel 2 is in a passive scrolling state. The scrollable display area then scrolls synchronously with scroll wheel 2 during this time interval, i.e., the first scrolling state. If, starting from time T2+t2, scroll wheel 2 transitions from a passive scrolling state to a stopped scrolling state or an inertial scrolling state, the scrollable display area enters a second scrolling state from time T2+t2. The scrolling speed of the scrollable display area at time T2+t2 is based on its scrolling speed at time T2; for example, the initial speed equals the cutoff speed, and t2 > 0. This allows for a seamless transition between the second and first scrolling states, reducing user frustration and improving the user experience.
[0055] The second scrolling state can be implemented using any of the following methods:
[0056] 1. First, based on the cutoff speed of the first rolling state, enter a period of uniform rolling process, and then enter a deceleration rolling process; specifically: use the cutoff speed of the first rolling state as the initial speed of the uniform rolling process.
[0057] 2. First, based on the cutoff speed of the first rolling state, enter an accelerated rolling process and then enter a decelerated rolling process; specifically: use the cutoff speed of the first rolling state as the initial speed of the accelerated rolling process;
[0058] 3. First, based on the cutoff speed of the first rolling state, enter a period of accelerated rolling, then a period of uniform rolling, and finally a period of decelerated rolling; specifically: the cutoff speed of the first rolling state is used as the initial speed of the accelerated rolling process.
[0059] 4. The second rolling state only includes the deceleration rolling process described above.
[0060] Furthermore, the capacitance change information and the rolling information are also used to analyze whether the roller 2 has re-entered the passive rolling state from the inertial rolling state or the stopped rolling state. When the capacitance change information is used to analyze whether the finger is in contact with the roller 2 again, it is determined that the roller 2 has re-entered the passive rolling state from the inertial rolling state or the stopped rolling state.
[0061] When the controller 9 analyzes the capacitance change information and scrolling information to determine that the scroll wheel 2 has re-entered the passive scrolling state from the inertial scrolling state or the stopped scrolling state, the scrollable display area switches from the second scrolling state to the first scrolling state. In the second scrolling state, the user can quickly browse the scrollable display area without operating the scroll wheel 2. When the content of interest to the user appears, the user only needs to slightly scroll the scroll wheel 2, or scroll the scroll wheel 2 in the opposite direction, to bring the scrollable display area into the first scrolling state, which is synchronized with the scroll wheel 2, causing the scrollable display area to quickly stop scrolling for the user to view.
[0062] Furthermore, when the re-contact between the finger and the scroll wheel 2 is detected through capacitance change information, the scrollable display area in the second scrolling state immediately stops scrolling; if the scrolling information indicates that the scroll wheel 2 is also scrolling, the system switches to the first scrolling state.
[0063] Specifically: When the capacitance change information and scrolling information indicate that a finger that has lost contact with scroll wheel 2 has re-touched scroll wheel 2, the scrollable display area in the second scrolling state immediately stops scrolling. If the finger touches scroll wheel 2 and causes scroll wheel 2 to scroll together, the scrollable display area then transitions from a stopped scrolling state to a first scrolling state where it scrolls synchronously with scroll wheel 2. In the second scrolling state, the user can quickly browse the scrollable display area without operating scroll wheel 2. When the content of interest to the user appears, the user only needs to touch scroll wheel 2 again with their finger to stop the scrolling of the scrollable display area for viewing.
[0064] The scroll wheel 2 is rotatably mounted on the mouse body 1 via a fixed axis 5. The fixed axis 5 is installed inside and fixed to the housing 7. The scroll wheel 2 is rotatably mounted on the fixed axis 5, and the encoder module 6 is fixed on the fixed axis 5. As mentioned above, during the monitoring and transmission of capacitance change information, due to the special structure of the capacitor structure 11 where the two poles do not contact each other, the hardware used for collecting and transmitting capacitance change information does not need to contact the scroll wheel 2. Therefore, its rotation will not have any impact. At the same time, the encoder module 6 does not roll with the scroll wheel 2, so the hardware used for collecting and transmitting scrolling information also does not need to contact the scroll wheel 2. Therefore, its rotation will also not have any impact. When the user scrolls the scroll wheel 2, there is no additional friction, resulting in a better experience and increased device lifespan.
[0065] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and application concept of this application, should be included within the scope of protection of this application.
Claims
1. A mouse device, comprising a mouse body (1) and a scroll wheel (2), wherein the scroll wheel (2) is rotatably mounted on the mouse body (1), and the scroll wheel (2) has a contact area (24) that can be driven by a finger to make the scroll wheel (2) roll; the scroll wheel (2) has a first conductive structure (22) and a first conductive part (21) arranged with equal potential. The mouse body (1) includes a first conductor (3) and a capacitive sensor (4). The first conductor (3) has a second conductive part (31), and the second conductive part (31) and the first conductive part (21) form a capacitive structure (11). The capacitive sensor (4) is connected to the second conductive part (31). The first conductive structure (22) is arranged in association with the contact area (24) so that the capacitive sensor (4) can obtain the capacitance change information of the capacitive structure (11) when the finger touches or leaves the scroll wheel (2) in real time.
2. The mouse device of claim 1, wherein, The first conductive structure (22) is a metal coating or a conductive silicone layer on the outer peripheral wall of the roller (2).
3. The mouse device of claim 1, wherein, The first conductive structure (22) has a protective layer on the outside.
4. The mouse device of claim 1, wherein, The distance between the second conductive part 31 and the first conductive part 21 is L, where 0.1mm < L < 10mm.
5. The mouse device of claim 1, wherein, The first conductive part (21) belongs to the first conductive structure (22).
6. The mouse device of claim 5, wherein, The cross section of the second conductive part (31) perpendicular to the axis of the roller (2) is an arc whose center falls on the axis of the roller (2).
7. The mouse device of claim 1, wherein, The roller (2) has a second conductive structure (23) arranged at the same potential as the first conductive structure (22), and the first conductive part (21) belongs to the second conductive structure (23).
8. The mouse device of claim 1, wherein, The mouse body (1) also includes: a shell (7), a circuit board (8), and a controller (9). The controller (9) and the capacitive sensor (4) are both mounted on the circuit board (8). The circuit board (8) is mounted inside the shell (7). The capacitive sensor (4) is mounted on the circuit board (8) and located inside the shell (7). The capacitive sensor (4) transmits the capacitance change information to the controller (9) through the circuit board (8). The sensing end of the capacitive sensor (4) can be directly connected to the first conductor (3) or connected to the first conductor (3) through the circuit board (8) to realize the electrical connection between the sensing end of the capacitive sensor (4) and the second conductive part (31).
9. The mouse device of claim 8, wherein, The mouse body (1) also includes an encoder module (6), which is installed inside the housing (7). The encoder module (6) can obtain the scrolling information of the scroll wheel (2) in real time and transmit the scrolling information to the controller (9) through the circuit board (8).
10. The mouse device of claim 9, wherein, The scroll wheel (2) is rotatably mounted on the mouse body (1) via the fixed shaft (5). The fixed shaft (5) is installed inside the housing (7) and fixed to the housing (7). The scroll wheel (2) is rotatably mounted on the fixed shaft (5). The encoder module (6) is fixed on the fixed shaft (5).
11. The mouse device of claim 9, wherein, The controller (9) comprises a first control module (91) and a second control module (92), both of which are connected to the circuit board (8), the first control module (91) communicates with the encoder module (6) through the circuit board (8) to receive the rolling information of the scroll wheel (2), and the capacitive sensor (4) communicates with the second control module (92) through the circuit board (8) to receive the capacitive change information of the capacitive structure (11).