CN219642212U - Roller assembly and mouse - Google Patents

Abstract

The utility model relates to the technical field of input equipment, and particularly discloses a roller assembly and a mouse. The roller assembly comprises a switching key, a roller body and a base provided with a center shaft; the roller body is coaxially sleeved on the center shaft, the center shaft is elastically connected with a buckling end, and the buckling end is abutted against the roller body; the switching button is movably arranged on the base, the switching button can be switched between a first position and a second position, when the switching button is positioned at the first position, the switching button is propped against the center shaft, the roller body can slide relative to the buckling end, the roller body rotates around the axis of the center shaft, when the switching button is positioned at the second position, the switching button and the center shaft are arranged at intervals, and the roller body drives the center shaft to rotate around the axis of the center shaft. The roller assembly enables the switching key to be pressed against or separated from the center shaft by adjusting the position of the switching key, so that the relative motion state of the center shaft and the roller body can be controlled, the working condition of the clamping end can be adjusted, and the operation handfeel of the roller body can be changed.

Description

Roller assembly and mouse

Technical Field

The utility model relates to the technical field of input equipment, in particular to a roller assembly and a mouse.

Background

The mouse is an external input device of the computer and is also an indicator for positioning the longitudinal and transverse coordinates of a computer display system, so that a user can send an operation instruction to the computer more easily by using the mouse, and the efficiency of operating the computer by the user is improved. Besides the left and right keys, the mouse wheel is the key most commonly used by users, such as browsing web pages or moving cursors by using the mouse wheel, or outputting a middle key signal and switching different function modes by pressing the wheel.

Currently, in the mouse industry, most mouse wheels cannot switch the touch sense of the wheel, either only in a state with a rolling touch sense or only in a state without a rolling touch sense; the touch feeling of the mouse wheel cannot be switched according to the actual situation.

Among the mice capable of switching the touch feeling of the roller, part of the mice realize the switching of the touch feeling of the roller by utilizing a motor, however, the mice have complex structure and high production cost; a part of mice are provided with keys to adjust the distance between a poking piece and teeth in the roller, and the touch of the roller is switched by utilizing the lever principle, however, the mouse has the problem of heavy key pressure sense due to longer adjustment stroke.

Disclosure of Invention

The utility model aims to provide a roller assembly and a mouse, so that the roller assembly can be switched between a state with a rolling touch feeling and a state without the rolling touch feeling, and the mouse roller has different rotation handfeel.

To achieve the purpose, the utility model adopts the following technical scheme:

the roller assembly comprises a base, a roller body and a switching key; the base is provided with a center shaft; the roller body is coaxially sleeved on the center shaft, the center shaft is elastically connected with a clamping end, and the clamping end is abutted against the roller body; the switching button movable mounting in the base, the switching button can switch between first position and second position, works as the switching button is in when the first position, the switching button support press in the axis, the gyro wheel body can be relative the buckle end slides, the gyro wheel body is rotatory around the axis of axis, works as the switching button is in when the second position, the switching button with the axis interval sets up, the gyro wheel body drives the axis is rotatory around the axis of axis.

As the preferable technical scheme of the roller assembly, the roller body comprises a main body ring, the main body ring is an annular piece, and a rough layer is arranged on the outer surface of the main body ring; the inner surface of main part ring is equipped with the buckle layer, the interval equipartition of buckle has a plurality of conflict lugs, the buckle end support press in the conflict lug.

As the preferential technical scheme of wheel components, switch the button and concave be equipped with annular spout, annular spout intercommunication has first buckle groove and second buckle groove, wheel components still includes the locating lever, the one end of locating lever with the base rotates to be connected, and the other end stretches into in the annular spout, when switch the button and be in when the first position, the locating lever part buckle in the first buckle inslot, when switch the button and be in when the second position, the locating lever part buckle in the second buckle inslot.

As the preferable technical scheme of the roller assembly, one side of the first buckling groove far away from the base is communicated with the annular chute, and one side of the second buckling groove far away from the base is communicated with the annular chute; the switching key is elastically connected with the base through an elastic piece, and the elastic piece is used for driving the switching key to move away from the base.

As the preferential technical scheme of gyro wheel subassembly, the switching button includes crimping piece and brake block, the crimping piece is concave to be equipped with the crimping groove, the brake block paste is located the cell wall in crimping groove, the brake block can with centraxonial surface matches the laminating.

As the preferred technical scheme of roller assembly, the base is equipped with the locating rack, the locating rack has hooking groove and holding tank, the locating lever rotate connect in the tank bottom in hooking groove, the crimping piece is equipped with the reference column, the reference column wears to locate the holding tank, elastic component elastic connection the tank bottom in holding tank with the reference column.

As the preferable technical scheme of the roller assembly, the brake pad is made of silica gel.

As the preferable technical scheme of the roller assembly, the roller body further comprises a clamping ring coaxially fixedly connected to the main body ring, a ring-shaped magnet is embedded in the clamping ring, and the ring-shaped magnet is coaxial with the main body ring; and the base is also provided with a magnetic induction module, and the magnetic induction module is used for monitoring the action of the annular magnet.

As the preferable technical scheme of the roller assembly, an elastic pulling piece is arranged on the center shaft, the middle part of the elastic pulling piece is fixedly connected to the outer surface of the center shaft, and two ends of the elastic pulling piece are respectively wound to form the clamping end.

The mouse comprises the roller assembly.

The utility model has the beneficial effects that:

the roller assembly utilizes the design that the switching key can be switched between the first position and the second position, so that a user can press or separate the switching key from the center shaft by adjusting the position of the switching key, and the relative motion state of the center shaft and the roller body can be controlled. When the switching button is separated from the center shaft, the clamping end is stably pressed on the roller body, so that the roller body can smoothly drive the center shaft to rotate, and therefore, no relative motion exists between the roller body and the center shaft, no hand feeling resistance exists when a user manipulates the roller body, and the roller assembly is in a rolling touch state. When the switching button is propped against the middle shaft, the rotation of the roller body can not drive the middle shaft, so that the clamping end can move relative to the roller body, the elastic connection between the clamping end and the middle shaft not only ensures the connection reliability, but also enables the force generated when the position of the clamping end changes to be fed back to the roller body, so that a user has hand feeling resistance when manipulating the roller body, and the roller assembly is in a rolling touch state. The design enables a user to adjust the relative motion state of the roller body and the middle shaft by controlling the mode of switching the positions of the keys, and further realizes adjustment of the working condition of the fastening end, so that the use handfeel of the roller body is adjustable, and the use experience of the user is improved.

Drawings

Fig. 1 is a schematic structural diagram of a roller assembly according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a truck assembly provided in an embodiment of the present utility model;

fig. 3 is a partial enlarged view of a in fig. 2.

In the figure:

100. a magnetic induction module; 110. a magnetic induction IC; 120. a connection cable;

200. a base; 210. a positioning frame; 211. a first positioning hole; 212. a mounting cavity; 220. a limiting frame; 221. a hooking groove; 222. a receiving groove; 223. a guide groove; 224. an avoidance groove; 230. a support frame; 231. a second positioning hole;

300. switching keys; 310. a press-connection block; 311. a crimping groove; 312. positioning columns; 313. a guide block; 314. a second fastening groove; 315. a first fastening groove; 316. a connecting rod; 320. a brake pad; 330. a positioning rod; 340. an elastic member;

400. an elastic poking piece; 410. a through hole; 420. a clamping end; 500. locking a bolt;

600. a roller body; 610. a body ring; 611. a rough layer; 612. a buckle layer; 620. a clamping ring; 700. a ring magnet; 800. a center shaft; 801. a bonding groove; 802. locking the hole.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 3, the present embodiment provides a roller assembly including a base 200, a roller body 600, and a switching key 300; the base 200 is provided with a center shaft 800; the roller body 600 is coaxially sleeved on the center shaft 800, the center shaft 800 is elastically connected with the buckling end 420, and the buckling end 420 is abutted against the roller body 600; the switch button 300 is movably mounted on the base 200, the switch button 300 can be switched between a first position and a second position, when the switch button 300 is in the first position, the switch button 300 is pressed against the center shaft 800, the roller body 600 can slide relative to the snap end 420, the roller body 600 rotates around the axis of the center shaft 800, and when the switch button 300 is in the second position, the switch button 300 and the center shaft 800 are arranged at intervals, and the roller body 600 drives the center shaft 800 to rotate around the axis of the center shaft 800.

The roller assembly utilizes the design that the switching button 300 can be switched between the first position and the second position, so that a user can press or separate the switching button 300 from the middle shaft 800 by adjusting the position of the switching button 300, thereby controlling the relative motion state of the middle shaft 800 and the roller body 600. When the switching button 300 is separated from the center shaft 800, the buckle end 420 is stably pressed against the roller body 600, so that the roller body 600 can smoothly drive the center shaft 800 to rotate, and therefore, no relative motion exists between the roller body 600 and the center shaft 800, no hand feeling resistance exists when a user manipulates the roller body 600, and the roller assembly is in a state without rolling touch. When the switching button 300 is pressed against the middle shaft 800, the rotation of the roller body 600 cannot drive the middle shaft 800, so that the fastening end 420 can move relative to the roller body 600, the elastic connection between the fastening end 420 and the middle shaft 800 not only ensures the reliability of connection, but also enables the force generated when the position of the fastening end 420 changes to be fed back to the roller body 600, so that a user has hand feeling resistance when manipulating the roller body 600, and the roller assembly is in a rolling touch state. The above design enables a user to adjust the relative motion state of the roller body 600 and the middle shaft 800 by controlling the position of the switching key 300, thereby realizing the adjustment of the working condition of the fastening end 420, enabling the use hand feeling of the roller body 600 to be adjustable and improving the use experience of the user.

In this embodiment, the switching key 300 is concavely provided with an annular chute, the annular chute is communicated with a first fastening slot 315 and a second fastening slot 314, the roller assembly further includes a positioning rod 330, one end of the positioning rod 330 is rotatably connected with the base 200, the other end of the positioning rod extends into the annular chute, when the switching key 300 is located at a first position, the positioning rod 330 is partially fastened in the first fastening slot 315, and when the switching key 300 is located at a second position, the positioning rod 330 is partially fastened in the second fastening slot 314. Specifically, the positioning rod 330 is a steel wire.

The design of annular spout is simple reliable, helps realizing switching button 300 smoothly between first position and second position, above improvement simple structure, occupation space is little, low in production cost and job stabilization nature are high.

In this embodiment, the action of the positioning rod 330 is similar to the common principles of plugging and unplugging a mobile phone card, and the specific principles of the operation and effect are common knowledge in the art, and are well known to those skilled in the art, and will not be repeated here.

Further, a side of the first fastening groove 315 away from the base 200 is communicated with the annular chute, and a side of the second fastening groove 314 away from the base 200 is communicated with the annular chute; the switch button 300 is elastically connected with the base 200 through an elastic member 340, and the elastic member 340 is used for driving the switch button 300 to move away from the base 200.

The elastic piece 340 is kept away from the design that base 200 removed through pushing away from the crimping piece 310, has realized the automatic re-setting of switching button 300 for the locating lever 330 is under the condition of not stretching into first buckle groove 315, and the elasticity of elastic piece 340 can drive locating lever 330 to remove to in the second buckle groove 314, and above design has avoided the condition that locating lever 330 stopped in annular spout, has ensured that switching button 300 can only accomplish work in first position or second position, has guaranteed the stability of roller assembly work, has reduced the unexpected risk of production in the course of working.

Still further, the switching key 300 includes a pressing block 310 and a brake block 320, the pressing block 310 is concavely provided with a pressing slot 311, the brake block 320 is attached to a slot wall of the pressing slot 311, and the brake block 320 can be attached to an outer surface of the center shaft 800 in a matching manner. When the switch button 300 is at the first position, the brake pad 320 is tightly attached to the outer surface of the bottom bracket 800, so that the bottom bracket 800 cannot rotate. The arrangement of the brake pad 320 and the compression joint groove 311 determines the positioning mode of the switching key 300 and the center shaft 800, ensures the positioning accuracy, and avoids the risk of position deviation of the center shaft 800 caused by accidents. Meanwhile, the design of the selected brake pad 320 limits the relative positions of the switching key 300 and the center shaft 800, and ensures that the stroke between the first position and the second position is short enough, so that the mode switching requirements of simple structure, light handfeel and short stroke can be met.

Illustratively, the mounting position of the brake pad 320 on the pressing block 310 is adjustable, and the above design improves the flexibility of the brake pad 320, and helps to improve the positioning effect of the switch button 300 on the center shaft 800, so as to improve the working stability of the roller assembly.

In this embodiment, the brake pad 320 has an arc shape, one side is tightly attached to the wall of the pressing slot 311, and the other side is used for attaching to the outer surface of the center shaft 800. In other embodiments of the present embodiment, two brake pads 320 are provided and are located on each side of the bottom bracket 800.

Further, the base 200 is provided with a limiting frame 220, the limiting frame 220 is provided with a hooking groove 221 and a containing groove 222, the positioning rod 330 is rotatably connected to the bottom of the hooking groove 221, the crimping block 310 is provided with a positioning column 312, the positioning column 312 is arranged in the containing groove 222 in a penetrating manner, and the elastic piece 340 is elastically connected with the bottom of the containing groove 222 and the positioning column 312. Specifically, the elastic member 340 is a telescopic spring.

The cooperation of the limiting frame 220 and the compression joint block 310 achieves the purpose of guiding the switching key 300, the risk of position deviation of the switching key 300 caused by accidents is greatly reduced, and smooth operation of the roller assembly is effectively guaranteed.

The brake pad 320 is made of silica gel, for example. The brake pad 320 made of silica gel has the advantages of environmental protection, good damping effect, flexibility and durability, and can smoothly achieve the purpose of stopping the center shaft 800.

In this embodiment, the roller body 600 includes a main body ring 610, the main body ring 610 is a ring-shaped member, the outer surface of the main body ring 610 is provided with a rough layer 611, and the external environment (such as a hand of a user) contacts with the rough layer 611 to drive the roller body 600 to rotate; the inner surface of the main body ring 610 is provided with a fastening layer 612, a plurality of interference bumps are uniformly distributed on the fastening layer 612 at intervals, and the fastening end 420 is pressed against the interference bumps.

By means of the connection relation between the buckling layer 612 and the buckling end 420, smooth abutting of the buckling end 420 on the roller body 600 is achieved, and the fact that the relative motion state of the roller body 600 and the center shaft 800 can be automatically adjusted according to the relative motion state of the center shaft 800 and the base 200 is guaranteed. The provision of the interference projection promotes a click feeling transmitted to the user when the roller body 600 rotates.

When the switching button 300 is at the first position, the central shaft 800 cannot rotate, so that the abutting convex blocks on the buckling end 420 and the buckling layer 612 slide in a friction manner, and the contact between the abutting convex blocks and the buckling layer 612 cooperates with the design that the buckling layer 612 is elastically connected with the central shaft 800, so that the force on the roller assembly can be transmitted to the hands of the user through the roller body 600, and the rolling of the roller body 600 has obvious buckling hand feeling.

Specifically, the roughened layer 611 is also provided with cleats to enhance the handling of the user.

In this embodiment, the edge of the accommodating groove 222 is further provided with a plurality of guide grooves 223, the outer surface of the positioning column 312 is convexly provided with guide blocks 313, the number of the guide blocks 313 is the same as that of the guide grooves 223 and corresponds to one another, and each guide block 313 is matched and slidingly arranged in the corresponding guide groove 223.

The positioning column 312 is connected with other components of the switching key 300 through a connecting rod 316, and the limiting frame 220 is further provided with an avoidance groove 224 communicated with the accommodating groove 222, wherein the avoidance groove 224 is used for avoiding the connecting rod 316.

Further, the roller body 600 further includes a clamping ring 620 coaxially and fixedly connected to the main body ring 610, wherein the clamping ring 620 is embedded with a ring-shaped magnet 700, and the ring-shaped magnet 700 is coaxial with the main body ring 610; the base 200 is further provided with a magnetic induction module 100, and the magnetic induction module 100 is used for monitoring the action of the annular magnet 700.

Illustratively, the ring magnet 700 is a permanent magnet; the magnetic induction module 100 includes a magnetic induction IC110 and a connection cable 120, wherein the magnetic induction IC110 records a rotation signal of the ring magnet 700 by sensing the action of the ring magnet 700, and the connection cable 120 is used for communicatively connecting the magnetic induction IC110 and an external device.

The magnetic induction module 100 can detect the rolling direction and the rolling speed of the ring-shaped magnet 700 following the roller body 600, and correspond to different operation instructions according to the rolling direction and the rolling speed. Specifically, when the annular magnet 700 rotates along with the roller body 600, the magnetic induction module 100 is stationary relative to the annular magnet 700, and the relative positions of the annular magnet 700 and the magnetic induction module 100 change, so that the magnetic force of the sensed magnet also changes, and different operation signals of the roller body 600 are reflected through the relative position relationship between the two.

It is understood that in other implementations of the present embodiment, the ring magnet 700 may be replaced by other shapes, and the positional relationship between the ring magnet and the roller body 600 may be other ways, which only need to satisfy the synchronous rotation relationship.

The design of embedding the annular magnet 700 in the clamping ring 620 can reduce the overall size of the roller body 600, and effectively save the structural space. It is understood that in other implementations of the present embodiment, the ring magnet 700 may be coupled to other locations of the roller body 600.

Illustratively, an elastic pulling piece 400 is mounted on the bottom bracket 800, the middle portion of the elastic pulling piece 400 is fixedly connected to the outer surface of the bottom bracket 800, and two ends of the elastic pulling piece 400 are respectively wound to form a snap end 420.

By means of the split design, the difficulty in elastic connection of the buckle end 420 and the center shaft 800 is reduced, production cost is reduced, and processing efficiency is improved.

In this embodiment, the rolling resistance of the elastic pulling piece 400 is adjustable, so that the relative position and the specific elastic connection condition of the snap-in end 420 and the middle shaft 800 are adjustable, the flexibility of the snap-in end 420 is greatly improved, the structure of this embodiment can be applied to roller assemblies of different structures, sizes and types, and the application range of the roller assembly is greatly expanded.

Specifically, the middle part of the elastic pulling piece 400 is penetrated with a through hole 410, the middle shaft 800 is a step shaft with gradually reduced diameters from the center to the two ends, a fitting groove 801 is concavely arranged on the outer surface of one side of the middle shaft 800, and a locking hole 802 is formed at the bottom of the fitting groove 801. The locking bolt 500 passes through the through hole 410 and is screwed into the locking hole 802, so that the middle part of the elastic pulling piece 400 is tightly attached to the groove wall of the attaching groove 801.

In this embodiment, the base 200 is further provided with a positioning frame 210 and a supporting frame 230, the positioning frame 210 is provided with a first positioning hole 211, the supporting frame 230 is provided with a second positioning hole 231, and two ends of the center shaft 800 are respectively connected to the first positioning hole 211 and the second positioning hole 231 in a rotating manner. The positioning frame 210 also encloses a mounting cavity 212, and the magnetically induced IC110 is disposed within the mounting cavity 212.

The embodiment also provides a mouse comprising the roller assembly.

Illustratively, the mouse further includes a mouse body having a decorative cover disposed thereon, the decorative cover being disposed on the wheel assembly such that a wheel face portion of the body ring 610 protrudes beyond the decorative cover. Specifically, the decorative cover is in snap connection with the mouse body. The decorative cover is used for protecting the roller body 600, preventing the roller body 600 from falling off and damaging the magnetic induction module 100, blocking dust and splashing, and simultaneously playing a decorative role, hiding structural members of the roller assembly, and enabling the appearance to be more attractive and tidy.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Roller assembly, its characterized in that includes:

a base (200) provided with a center shaft (800);

the roller body (600) is coaxially sleeved on the center shaft (800), the center shaft (800) is elastically connected with a buckling end (420), and the buckling end (420) is abutted against the roller body (600);

the switching button (300), movable mounting in base (200), switching button (300) can switch between first position and second position, works as switching button (300) are in when first position, switching button (300) support press in axis (800), gyro wheel body (600) can be relative buckle end (420) slip, gyro wheel body (600) are around axis rotation of axis (800), works as switching button (300) are in when second position, switching button (300) with axis (800) interval sets up, gyro wheel body (600) drive axis (800) are around the axis rotation of axis (800).

2. The roller assembly according to claim 1, wherein the switching key (300) is concavely provided with an annular chute, the annular chute is communicated with a first buckling groove (315) and a second buckling groove (314), the roller assembly further comprises a positioning rod (330), one end of the positioning rod (330) is rotationally connected with the base (200), the other end of the positioning rod extends into the annular chute, when the switching key (300) is in the first position, the positioning rod (330) is partially buckled in the first buckling groove (315), and when the switching key (300) is in the second position, the positioning rod (330) is partially buckled in the second buckling groove (314).

3. The roller assembly of claim 2, wherein a side of the first snap groove (315) remote from the base (200) communicates with the annular runner and a side of the second snap groove (314) remote from the base (200) communicates with the annular runner; the switching key (300) is elastically connected with the base (200) through an elastic piece (340), and the elastic piece (340) is used for driving the switching key (300) to move away from the base (200).

4. A roller assembly according to claim 3, wherein the switching button (300) comprises a pressing block (310) and a brake block (320), the pressing block (310) is concavely provided with a pressing groove (311), the brake block (320) is attached to a groove wall of the pressing groove (311), and the brake block (320) can be attached to an outer surface of the center shaft (800) in a matching manner.

5. The roller assembly according to claim 4, wherein the base (200) is provided with a limiting frame (220), the limiting frame (220) is provided with a hooking groove (221) and a containing groove (222), the positioning rod (330) is rotatably connected to the bottom of the hooking groove (221), the crimping block (310) is provided with a positioning column (312), the positioning column (312) is arranged in the containing groove (222) in a penetrating manner, and the elastic piece (340) is elastically connected with the bottom of the containing groove (222) and the positioning column (312).

6. The roller assembly of claim 4, wherein the brake pad (320) is silica gel.

7. The roller assembly according to claim 1, wherein the roller body (600) comprises a main body ring (610), the main body ring (610) being an annular member, an outer surface of the main body ring (610) being provided with a roughened layer (611); the inner surface of the main body ring (610) is provided with a clamping layer (612), a plurality of collision convex blocks are uniformly distributed on the clamping layer (612) at intervals, and the clamping ends (420) are propped against the collision convex blocks.

8. The roller assembly of claim 7, wherein the roller body (600) further comprises a clamping ring (620) coaxially and fixedly connected to the main body ring (610), the clamping ring (620) is embedded with a ring-shaped magnet (700), and the ring-shaped magnet (700) is coaxial with the main body ring (610); the base (200) is also provided with a magnetic induction module (100), and the magnetic induction module (100) is used for monitoring the action of the annular magnet (700).

9. The roller assembly according to any one of claims 1 to 8, wherein an elastic pulling piece (400) is mounted on the central shaft (800), a middle portion of the elastic pulling piece (400) is fixedly connected to an outer surface of the central shaft (800), and two ends of the elastic pulling piece (400) are respectively wound to form the buckling end (420).

10. A mouse comprising the wheel assembly of any one of claims 1-9.