Magnetic induction roller operating device

Abstract

The utility model discloses a magnetic induction roller operating device. The device comprises a roller frame, a roller and a circuit board. Wherein the rolling wheel is installed on the wheel frame through a wheel shaft, a plurality of magnetic blocks with the same sequence of magnetic poles are evenly and annularly arranged in the wheel circumference of the rolling wheel, and the magnetic blocks are distributed in the circumferential direction of the rolling wheel to form regular magnetic field distribution. The circuit board is positioned below or laterally below the roller, and at least two magnetic induction elements are arranged on the surface of the circuit board close to the roller and are arranged along the radial direction of the roller. The device detects the change of a magnetic field when the roller rotates through the magnetic induction element, realizes accurate identification of the rotation direction and angle of the roller, solves the problems of abrasion, precision reduction and the like caused by physical contact or environmental factors of a traditional mechanical or optical encoder, and has the characteristics of high sensitivity, high reliability and long service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer input devices, in particular to a magnetic induction-based roller operation device, especially suitable for mice, trackballs or other electronic devices requiring high-precision roller operation. BACKGROUND

[0002] In modern computer input devices, mouse roller technology has undergone years of development and optimization as an important tool for user interaction with computers. Currently, the mainstream mouse roller technology is mainly based on optical or mechanical encoders. These technologies have been very mature in practical applications and can meet the basic needs of most users. Optical encoders detect the rotation of the roller through photoelectric sensors, while mechanical encoders achieve roller position recognition through physically contacting mechanical structures. These technologies provide relatively high precision and reliability to some extent, making roller operation an indispensable function in users' daily operations such as browsing web pages and editing documents.

[0003] However, despite the significant progress made by existing technologies, there are still some shortcomings in practical applications. First, wear and tear are one of the main challenges faced by traditional roller technology. Whether it is an optical encoder or a mechanical encoder, its core components rely on physical contact or optical sensor operation. Over time, these components inevitably suffer from wear and tear. For example, the friction in mechanical encoders can cause the roller to react sluggishly or even become stuck, which not only reduces the service life of the roller but also seriously affects user experience. In addition, although optical sensors have relatively high precision, their performance is easily affected by environmental factors such as dust accumulation or changes in surface reflection, which can cause the precision of roller operation to decrease.

[0004] Secondly, traditional roller technology also has certain limitations in terms of precision and sensitivity. The precision and sensitivity of mechanical encoders in identifying roller rotation are often limited by mechanical structures, especially in scenarios requiring fine operation or high-speed scrolling, the response of the roller may not be smooth or timely enough. This deficiency is particularly evident when users perform high-precision design or quickly browse large amounts of content, which can lead to a decrease in operational efficiency. Although optical encoders have improved precision, their performance is still subject to environmental interference, and errors cannot be completely avoided.

[0005] In view of these shortcomings, it is of great significance and value to develop a new type of magnetic induction roller operation device. CONTENT OF THE INVENTION

[0006] The magnetic sensing roller operating device detects the change of the magnetic field when the roller rotates through the magnetic sensing element, realizes the accurate identification of the rotation direction and angle of the roller, solves the problems of wear and precision decline caused by physical contact or environmental factors of the traditional mechanical or optical encoder, and has the characteristics of high sensitivity, high reliability and long service life.

[0007] To achieve the above-mentioned purpose, the magnetic sensing roller operating device comprises a wheel frame, a roller and a circuit board.

[0008] The roller is installed on the wheel frame through an axle, and a plurality of magnetic blocks with the same sequence of magnetic poles are evenly arranged in the circumference of the roller. These magnetic blocks are distributed along the circumferential direction of the roller to form a regular magnetic field distribution.

[0009] The circuit board is located below or below the side of the roller, and at least two magnetic sensing elements are arranged on the surface of the circuit board close to the roller.

[0010] Further, the axle of the roller is connected with the wheel frame through a bearing or a shaft sleeve to ensure that the roller can rotate smoothly. The roller shaft has a damping structure for adjusting the resistance of the roller rotation, thereby providing a more comfortable operation feeling for the user.

[0011] Further, the outer surface of the rubber ring or the non-magnetic metal ring on the circumferential surface of the roller can be designed as a non-slip texture to enhance the friction force when the user operates, and at the same time, to protect the internal structure of the roller.

[0012] Further, the magnetic blocks embedded in the circumference of the roller are made of permanent magnetic material, and the magnetic poles of the magnetic blocks are arranged in the same direction, so that the roller can generate regular magnetic field changes when rotating.

[0013] Further, the magnetic sensing elements on the circuit board are preferably Hall sensors or magnetoresistance sensors, which are arranged in the same radial direction as the roller to detect the sensitivity of the magnetic field change.

[0014] Further, the arrangement interval of the two magnetic sensing elements on the circuit board is optimized according to the size of the roller and the distribution density of the magnetic blocks to ensure that the two magnetic sensing elements can detect the phase difference of the magnetic field signal when the roller rotates. This phase difference signal is collected and analyzed by a signal processing unit on the circuit board, which includes an amplifying circuit, a filtering circuit and a microprocessor, for denoising, amplifying and digitizing the magnetic field signal, so as to accurately calculate the rotation direction and rotation angle of the roller.

[0015] In the working process, when the roller rotates, the magnetic blocks in the wheel circumference move with it, causing the distribution of the magnetic field in space to change. Due to the fixed position of the two magnetic induction elements and the arrangement along the radial direction, when the roller rotates, the movement direction of the magnetic blocks is different, causing differences in the magnetic field changes detected by the two magnetic induction elements. These differences in magnetic field changes are collected and analyzed by the signal processing unit on the circuit board, to determine the rotation direction (forward or backward) and rotation angle of the roller. Specifically, when the roller rotates clockwise or counterclockwise, the magnetic field changes of the magnetic blocks will cause differences in the phase or amplitude of the signals output by the two magnetic induction elements. By comparing these differences, the rotation state of the roller can be accurately identified.

[0016] Further, the signal processing unit can also include a calibration module for initial calibration of the output signals of the magnetic induction elements to eliminate detection errors caused by manufacturing errors or installation deviations. In addition, a communication interface can also be integrated on the circuit board for transmitting the rotation information of the roller to external devices such as computers or embedded systems to achieve more extensive applications.

[0017] The magnetic sensing roller operating device of the present application realizes accurate detection of the rotation direction and angle of the roller through magnetic induction technology, avoiding the problems of wear, precision decline, etc. caused by physical contact or environmental factors in traditional mechanical or optical encoders. The arrangement of the magnetic induction elements and their cooperation with the magnetic blocks enable the device to maintain stable performance in complex environments while improving the sensitivity and precision of roller operation. In addition, the device has a simple structure, is easy to manufacture and maintain, has high practicality and reliability, and is suitable for various scenes requiring high-precision roller operation.

[0018] The above-listed advantages are not exhaustive of all advantages. Other potential advantages and detailed technical implementations will be further disclosed in the embodiments or other description sections of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Many aspects of the present disclosure will be better understood in connection with the following detailed description of specific embodiments, read in conjunction with the accompanying drawings and data, in which the positions, sizes and ranges of structures shown in the drawings are sometimes shown schematically and not necessarily to scale. In the drawings:

[0020] Figure 1 is a structural schematic diagram of an embodiment of the present disclosure.

[0021] Figure 2 is an exploded structural schematic diagram of a roller in an embodiment of the present application.

[0022] The various reference numerals in the drawings are as follows: 1 - wheel frame, 2 - roller, 3 - circuit board, 4 - magnetic block, 5 - rubber ring, 6 - magnetic induction element. DETAILED DESCRIPTION

[0023] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It is understood that the present disclosure can be presented in many different forms and are not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully convey the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0024] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the dimensions of some features can be distorted for the sake of clarity.

[0025] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate.

[0026] The singular forms "a", "said" and "the" used in the specification, unless clearly indicated otherwise, include plural forms. The language "includes", "comprises" and "contains" used in the specification means the presence of the claimed feature, but does not exclude the presence of one or more other features. The language "and / or" used in the specification includes any and all combinations of one or more of the related listed items.

[0027] One embodiment of the present application provides a magnetic sensing roller operating device. In order to better understand the structure and function of this embodiment, reference is made to the accompanying drawings Figure 1 for description.

[0028] As shown in the accompanying Figure 1 drawings, the main structure of this embodiment includes a wheel frame 1, a roller 2 and a circuit board 3.

[0029] The wheel frame 1 is the supporting structure of the device, which is usually made of engineering plastics or metal materials, such as polycarbonate or aluminum alloy, to ensure that it has sufficient strength and rigidity.

[0030] The design of the wheel frame 1 includes mounting grooves and fixing holes for fixing the roller 2 and the circuit board 3, which are realized by injection molding or mechanical processing.

[0031] Roller 2 is mounted on wheel frame 1 via an axle. Both ends of the axle are connected to wheel frame 1 via bearings or bushings to enable smooth rotation of roller 2. The specific type and size of the bearings or bushings can be selected according to the size of roller 2 and load requirements, such as miniature ball bearings or sliding bearings. The installation and fixing methods of these components are well known to those skilled in the art and will not be described in detail here.

[0032] Combined with appendix Figure 2 This allows for a clearer understanding of the structural design of roller 2. (See attached image.) Figure 2 As shown, multiple magnetic blocks 4 with identical magnetic poles are evenly arranged around the circumference of the roller 2. These magnetic blocks 4 are distributed along the circumference of the roller 2, forming a regular magnetic field distribution. The magnetic blocks 4 are made of permanent magnet materials, such as neodymium iron boron or ferrite, and their magnetic poles are aligned in the same direction, enabling the roller 2 to generate regular magnetic field changes when rotating. The magnetic blocks 4 can be fixed by bonding, embedding, or mechanical clamping, and the specific process falls within the scope of existing technology.

[0033] The roller 2 has a rubber ring 5 on its circumference. The outer surface of the rubber ring 5 is designed with anti-slip texture, such as diamond or wave texture, to enhance the friction when the user operates, and at the same time protect the internal structure of the roller 2.

[0034] The rubber ring 5 can be made of silicone or nitrile rubber, which have good wear resistance and anti-aging properties. The rubber ring 5 is usually fixed to the roller 2 by interference fit or bonding, which are conventional techniques for those skilled in the art.

[0035] The axle has a damping structure to adjust the resistance to the rotation of the roller 2, thereby providing the user with a more comfortable operating feel. The damping structure can be implemented in various ways, including spring damping, friction plate damping, or magnetic damping. For example, spring damping is achieved by placing a spring between the axle and the wheel frame 1, and the spring's elastic coefficient can be adjusted according to actual needs; friction plate damping is achieved by placing friction plates between the axle and the wheel frame 1, and the pressure of the friction plates can be controlled by adjusting screws. The design and installation methods of these damping structures are well-known to those skilled in the art and therefore will not be described in detail.

[0036] The circuit board 3 is located below or to the side of the roller 2. Two magnetic sensing elements 6, such as Hall effect sensors or magnetoresistive sensors, are mounted on its surface near the roller 2. These two magnetic sensing elements 6 are arranged radially along the roller 2 to detect changes in the magnetic field as the roller 2 rotates. The circuit board 3 is typically made of FR-4 material, and its surface has copper foil traces and pads for connecting the magnetic sensing elements 6 and other electronic components. The magnetic sensing elements 6 can be mounted using surface mount technology or through-hole mounting technology, which are conventional techniques for those skilled in the art.

[0037] The circuit board 3 is also provided with a signal processing unit, including an amplification circuit, a filter circuit, and a microprocessor, for denoising, amplifying, and digitizing the magnetic field signals, so as to accurately calculate the rotation direction and rotation angle of the roller 2. The specific circuit design and component selection of the signal processing unit belong to the prior art category, and thus will not be described in detail.

[0038] In the working process, when the roller 2 rotates, the magnetic blocks 4 in the wheel circumference move accordingly, causing the distribution of the magnetic field in space to change. Since the positions of the two magnetic induction elements 6 are relatively fixed and arranged in the radial direction, when the roller 2 rotates, the movement direction of the magnetic blocks 4 is different, causing differences in the magnetic field changes detected by the two magnetic induction elements 6. These differences in magnetic field changes are collected and analyzed by the signal processing unit on the circuit board 3, which includes an amplification circuit, a filter circuit, and a microprocessor, for denoising, amplifying, and digitizing the magnetic field signals, so as to accurately calculate the rotation direction and rotation angle of the roller 2. For example, when the roller 2 rotates clockwise, the magnetic field changes of the magnetic blocks 4 will cause differences in the phase or amplitude of the signals output by the two magnetic induction elements 6, and by comparing these differences, the rotation state of the roller 2 can be accurately identified.

[0039] Furthermore, the signal processing unit can also include a calibration module for initial calibration of the output signals of the magnetic induction elements 6 to eliminate detection errors caused by manufacturing errors or installation deviations. The specific implementation of the calibration module can be realized by software algorithm, for example, by collecting the magnetic field signals of the roller 2 when it is stationary as a reference value, and then adjusting the deviation of the detection signals in real time when the roller 2 rotates. In addition, the circuit board 3 can also integrate a communication interface for transmitting the rotation information of the roller 2 to external devices such as computers or embedded systems to achieve more extensive applications. The specific circuit design and protocol implementation of the communication interface belong to the common knowledge of those skilled in the art, and thus will not be described in detail.

[0040] In actual use scenarios, the magnetic sensing roller operating device of the present embodiment can be applied to computer mice, trackballs, or other electronic devices that require high-precision roller operation. For example, in a computer mouse, the user can achieve up and down scrolling of a webpage or zooming operation of a document by rotating the roller 2. Due to the introduction of magnetic sensing technology, the operation precision and sensitivity of the roller 2 are significantly improved, especially in scenarios requiring fine operation or high-speed scrolling, which can achieve smoother and more timely responses. In addition, the magnetic sensing technology avoids the problems of wear, precision decline, etc. caused by physical contact or environmental factors in traditional mechanical or optical encoders, significantly improving the service life and reliability of the roller 2.

[0041] In summary, the magnetic induction roller operation device of the present embodiment achieves accurate detection of the rotation direction and angle of the roller 2 through magnetic induction technology. It has a simple structure, is easy to manufacture and maintain, and has high practicality and reliability. By optimizing the arrangement of the magnetic induction element 6 and its cooperation with the magnetic block 4, the device can maintain stable performance in complex environments, while improving the sensitivity and accuracy of roller 2 operation, and is suitable for a variety of scenarios that require high-precision roller operation. Parts not described in detail, such as the installation of bearings, the design of the circuit board 3, and the specific implementation of the signal processing unit, are all within the scope of known technology or existing technology for those skilled in the art, and therefore do not need to be further disclosed.

[0042] Although exemplary embodiments of the present disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included within the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A magnetic sensing roller operating device, characterized by comprising: The application relates to a wheel frame, a roller and a circuit board. The roller is installed on the wheel frame through an axle, a plurality of magnetic blocks with the same magnetic pole sequence are uniformly arranged on the periphery of the roller, the magnetic blocks are distributed along the circumferential direction of the roller, and a regular magnetic field distribution is formed. The circuit board is arranged below or below the side of the roller, at least two magnetic induction elements are arranged on the surface of the circuit board close to the roller, and the two magnetic induction elements are arranged along the radial direction of the roller. The magnetic blocks are made of permanent magnetic material, and the magnetic poles of the magnetic blocks are arranged in the same direction. The magnetic induction elements are Hall sensors or magnetoresistance sensors. The circuit board is integrated with a communication interface for transmitting the rotation information of the roller to external equipment.

2. The magnetic scroll wheel operating device according to claim 1, wherein The magnetic induction elements are arranged close to the roller to detect the change of the magnetic field when the roller rotates.

3. The magnetic scroll wheel operating device according to claim 1, wherein The axle of the roller is connected with the wheel frame through a bearing or a shaft sleeve to ensure smooth rotation of the roller.

4. The magnetic scroll wheel operating device according to claim 1, wherein The magnetic induction elements are Hall sensors or magnetoresistance sensors.

5. The magnetic scroll wheel operating device according to claim 1, wherein The circuit board is provided with a signal processing unit, the signal processing unit comprises an amplifying circuit, a filtering circuit and a microprocessor, and is used for denoising, amplifying and digitizing the magnetic field signal to calculate the rotation direction and rotation angle of the roller.

6. The magnetic scroll wheel operating device according to claim 4, wherein The signal processing unit further comprises a calibration module for initial calibration of the output signal of the magnetic induction element.

7. The magnetic scroll wheel operating device according to claim 1, wherein A rubber ring or a non-magnetic metal ring is arranged on the periphery of the roller, and the outer surface of the rubber ring or the non-magnetic metal ring is provided with anti-skid texture.

8. The magnetic scroll wheel operating device according to claim 1, wherein The roller shaft has a damping structure for adjusting the resistance of the roller rotation.

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