A dual-mode roller mouse

Abstract

This utility model discloses a dual-mode scroll wheel mouse, relating to the field of computer peripheral technology. It includes a scroll wheel module, a magnetic field sensor array, a control module, and a bistable elastic element. The aim is to solve the problems of insufficient scroll wheel functionality and severe wear and tear in multi-functional scroll wheel mice on the market. Through the coordinated design of the magnetic field sensor array and the floating encoder follow-up mechanism, a single scroll wheel can trigger horizontal sliding or vertical scrolling functions based on different pressure levels. It employs non-contact pressure detection technology, calculating the pressure value through the change in magnetic field caused by the displacement of the magnetic element, thus solving the problem of easy wear and tear in traditional mechanical structures.

Description

Technical Field

[0001] This utility model relates to the field of computer peripherals and input devices, and in particular to a dual-mode scroll wheel mouse. Background Technology

[0002] In today's multi-dimensional interactive scenarios, the limitations of traditional scroll wheels are becoming increasingly apparent. Take 4K ultra-high-definition video editing as an example: users often need to frequently drag the timeline horizontally to adjust the position and timing of images. Traditional scroll wheels, due to their unidirectional control limitations, cannot directly meet this need, leading to inconvenience for users. Similarly, in 3D modeling software, designers hope to use scroll wheels to achieve more complex combined operations of perspective zooming and spatial rotation for more precise 3D model construction. However, traditional scroll wheels also cannot directly support such combined operations, limiting designers' creative efficiency and inspiration. Even in everyday office scenarios, users often experience efficiency losses due to the need to repeatedly switch between the touchpad and scroll wheel when browsing Excel spreadsheets across screens. These pain points fully expose the structural deficiencies of traditional scroll wheels in terms of spatial freedom, operational dimensional extensibility, and intent recognition accuracy, urgently requiring technological innovation and product upgrades to meet the growing needs of users.

[0003] With social development, multi-functional scroll wheel mice have appeared on the market, using mechanical encoders or gratings to detect rotation signals and triggering the horizontal sliding function through tilting or side pressure. This type of solution has the following drawbacks: the mechanical structure of the tilting scroll wheel is prone to wear due to frequent side pressure, resulting in a short lifespan; at the same time, the tilting operation is coupled with the scrolling action, making it difficult for users to accurately control the timing of the horizontal sliding trigger.

[0004] To address the aforementioned issues, this invention proposes a dual-mode scroll wheel mouse. Through the collaborative design of a Hall sensor and a floating encoder follow-up mechanism, a single scroll wheel can trigger horizontal sliding or vertical scrolling functions based on different pressure levels. This aims to solve the problems of insufficient scroll wheel functionality and severe wear and tear in multi-functional scroll wheel mice on the market. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-mode scroll wheel mouse.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual-mode scroll wheel mouse includes a scroll wheel module, a mouse shell, and further includes a magnetic field sensor array, a control module, and a bistable elastic element. The scroll wheel module includes a scroll wheel shaft and an elastic coupling. A floating encoder is connected to the right end of the scroll wheel shaft through the elastic coupling. A pair of permanent magnets are symmetrically embedded axially inside the shaft, with the magnetic poles of the permanent magnets perpendicular to the scroll wheel shaft. The magnetic field sensor array consists of two linear Hall sensors, fixed on a PCB board and directly opposite the scroll wheel shaft. The control module is connected to the magnetic field sensor array, and the bistable elastic element is located directly below the scroll wheel shaft.

[0008] Preferably, the linear Hall sensors of the magnetic field sensor array are arranged in an orthogonal direction.

[0009] Preferably, the pressure mapping algorithm presets a first pressure threshold of 300g and a second pressure threshold of 600g.

[0010] Preferably, the bistable elastic element is a nonlinear variable stiffness spring, whose force-displacement curve includes a low stiffness region of 0-300g, a critical abrupt change point of 600g, and a high stiffness region of 600g and above.

[0011] Preferably, the permanent magnet is a cylindrical neodymium iron boron magnet, symmetrically embedded in blind holes on both sides of the roller shaft, with the magnet surface flush with the outer wall of the roller shaft, and a guide post provided at the bottom of the roller shaft, with a guide groove on the guide post.

[0012] Preferably, the control module includes a self-calibration unit, and the rotation axis and the pressing axis of the roller module are the same physical axis, with the pressing action and the rotation action being independent of each other and without mechanical linkage.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] 1. This utility model achieves three functions simultaneously: longitudinal rolling, lateral sliding, and vertical pressing, through the coordinated design of non-contact magnetic induction pressure detection (Hall sensor) and floating encoder follow-up mechanism. No additional buttons or mechanical switching structure are required, which reduces manufacturing costs and improves user efficiency.

[0015] 2. This invention avoids mechanical wear and improves the lifespan of the multi-functional scroll wheel mouse by eliminating physical contact between the Hall sensor and the permanent magnet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a dual-mode scroll wheel mouse proposed in this utility model.

[0017] Figure 2This is a schematic diagram of the internal structure of a dual-mode scroll wheel mouse proposed in this utility model.

[0018] Figure 3 The graph shows the relationship between the pressing force and the magnetic field strength of a dual-mode scroll wheel mouse proposed in this invention.

[0019] In the diagram: 101, roller module; 102, permanent magnet; 103, roller shaft; 104, magnetic field sensor array; 105, bistable elastic element; 107, guide post; 108, PCB board; 109, guide groove; 201, flexible coupling; 202, floating encoder. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Combination Figure 1-2 As shown, a dual-mode scroll wheel mouse includes a scroll wheel module 101, a mouse shell, and further includes a magnetic field sensor array 104, a control module, and a bistable elastic element 105. The scroll wheel module 101 includes a scroll wheel shaft 103 and an elastic coupling 201. A floating encoder 202 is connected to the right end of the scroll wheel shaft 103 through the elastic coupling 201. The elastic coupling 201 allows the floating encoder 202 to float axially as the scroll wheel is pressed down. A pair of permanent magnets 102 are symmetrically embedded axially inside the shaft of the scroll wheel shaft 103. The magnetic poles of the permanent magnets 102 are perpendicular to the scroll wheel shaft 103. The magnetic field sensor array 104 consists of two linear Hall sensors, which are fixed on the PCB board 108 and directly opposite the scroll wheel shaft. The control module is connected to the magnetic field sensor array 104. The bistable elastic element 105 is located directly below the scroll wheel shaft 103.

[0022] The linear Hall sensors of the magnetic field sensor array 104 are arranged in an orthogonal direction to detect the magnetic field components of the X-axis and Y-axis respectively; the control module has a built-in pressure mapping algorithm to convert the composite vector change of the X / Y axis magnetic field components into a linear pressure value.

[0023] The pressure mapping algorithm presets a first pressure threshold of 300g and a second pressure threshold of 600g. When the pressure value is less than the first threshold, the control module outputs a longitudinal rolling signal, and the rolling speed is positively correlated with the pressure value. When the pressure value exceeds the second threshold, the control module outputs a lateral sliding signal, and the sliding direction is determined by the direction of the magnetic field vector offset at the moment the roller presses down.

[0024] The bistable elastic element 105 is a nonlinear variable stiffness spring. Its force-displacement curve includes a low stiffness region of 0-300g, a critical abrupt change point of 600g, and a high stiffness region of over 600g. The critical abrupt change point corresponds to the "click" sensation of tactile feedback, prompting the user to switch operating modes.

[0025] The permanent magnet 102 is a cylindrical neodymium iron boron magnet, which is symmetrically embedded in the blind holes on both sides of the roller shaft. The surface of the magnet is flush with the outer wall of the roller shaft 103. A guide post 107 is provided at the bottom of the roller shaft 103, and a guide groove 109 is provided on the guide post 107 to restrict the roller to move only in the vertical direction.

[0026] The control module includes a self-calibration unit that automatically records the current magnetic field strength as a reference value when the mouse is powered on, and dynamically subtracts the environmental magnetic field interference component during operation. The scroll wheel axis 103 of the scroll wheel module 101 and the pressing axis are the same physical axis, and the pressing action and the rotation action are independent of each other and have no mechanical linkage.

[0027] The sliding speed of the lateral sliding signal is positively correlated with the duration of pressure exceeding the second threshold, and the sliding speed gradually increases under continuous heavy pressure.

[0028] In this invention, when the user presses the mouse scroll wheel, the scroll wheel shaft moves downwards. At this time, the scroll wheel shaft, through a flexible coupling, causes a floating encoder to float downwards. Simultaneously, the spring at the bottom of the floating encoder is compressed, and the magnetic field sensor array embedded in the scroll wheel shaft also moves downwards synchronously, causing a displacement and a change in the magnetic field. The X-axis Hall sensor and Y-axis Hall sensor, orthogonally arranged on the PCB board, detect this and send signals to the differential circuit. The differential amplifier circuit then processes the output signals from the two sensors as follows:

[0029] like Figure 3 As shown, △Bx = Bx1 - Bx2, △By = By1 - By2, where Bx1 and By1 are the downward pressure state signals, and Bx2 and By2 are the initial state reference signals. The control module then calculates the pressure value F based on the combined vector magnitude of △Bx and △By. , where k is the calibration coefficient. When F>600g, a lateral sliding command is triggered, and the sliding direction is determined by the vector angle θ=arctan(△Bx / △By).

[0030] Furthermore, when the pressing action ends, the bistable elastic element will rebound, which will drive the roller to move upward. At the same time, the guide groove limits the roller, making it only move in the vertical direction. After the floating encoder returns to its original position, it will limit the rolling. At this time, the roller returns to the state before the button is pressed, completing one press and rebound operation.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual mode roller mouse comprising a roller module (101), a mouse housing, characterized in that, Also includes: The magnetic field sensor array (104), control module and bistable elastic element (105) are included. The roller module (101) includes a roller shaft (103) and an elastic coupling (201). The right end of the roller shaft (103) is connected to a floating encoder (202) through the elastic coupling (201). A pair of permanent magnets (102) are symmetrically embedded in the shaft of the roller shaft (103) along the axial direction. The magnetic pole direction of the permanent magnets (102) is perpendicular to the roller shaft (103). The magnetic field sensor array (104) is composed of two linear Hall sensors, which are fixed on the PCB board (108) and directly opposite the roller shaft. The control module is connected to the magnetic field sensor array (104). The bistable elastic element (105) is located directly below the roller shaft (103).

2. The dual-mode scroll wheel mouse according to claim 1, characterized in that: The linear Hall sensors of the magnetic field sensor array (104) are arranged in an orthogonal direction, and the control module has a built-in pressure mapping algorithm.

3. The dual-mode scroll wheel mouse according to claim 2, characterized in that: The pressure mapping algorithm presets a first pressure threshold of 300g and a second pressure threshold of 600g.

4. The dual-mode scroll wheel mouse according to claim 1, characterized in that: The bistable elastic element (105) is a nonlinear variable stiffness spring, and its force-displacement curve includes a low stiffness region of 0-300g, a critical abrupt change point of 600g, and a high stiffness region of above 600g.

5. The dual-mode scroll wheel mouse according to claim 1, characterized in that: The permanent magnet (102) is a cylindrical neodymium iron boron magnet, which is symmetrically embedded in the blind holes on both sides of the roller shaft. The surface of the magnet is flush with the outer wall of the roller shaft (103). A guide post (107) is provided at the bottom of the roller shaft (103), and a guide groove (109) is provided on the guide post (107).

6. The dual-mode scroll wheel mouse according to claim 1, characterized in that: The control module includes a self-calibration unit. The roller shaft (103) of the roller module (101) and the pressing shaft are the same physical shaft. The pressing action and the rotation action are independent of each other and have no mechanical linkage.

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