CN117666822A - Roller control mechanism and mouse device thereof - Google Patents

Abstract

The invention provides a roller control mechanism. The roller control mechanism comprises a support base, a roller module, a first magnetic force module and a second magnetic force module. The roller module, the first magnetic module and the second magnetic module are arranged on the supporting base, and the second magnetic module can enable the first magnetic module to generate magnetic attraction to attract the metal ratchet wheel in the roller module, so that the roller module generates section sense when rotating.

Description

Roller control mechanism and mouse device thereof

Technical Field

The present invention relates to a mechanism of an input device, and more particularly, to a control mechanism of a mouse device.

Background

The mouse is used for controlling a cursor on a computer screen and operating the computer. After the first mouse around the world was manufactured from the united states in 1968, the mouse has become an integral part of computer equipment, whether it be text processing, game contests, industrial drawing, design drawing or media production.

Generally, an operation interface of the mouse includes: left and right keys and a wheel. In order to improve the convenience and comfort of the mouse roller during operation, in the prior art, for example, in taiwan patent publication No. I448928, a roller module of an input device is proposed, in which one to two different toothed surfaces are disposed in a groove or a hollow groove of the roller, and then one of the toothed surfaces is touched by a swing arm, so that different paragraph sensations are generated when the roller rotates; or, as in taiwan patent publication No. M498914, a shuttle roller module of a mouse is proposed, in which a toothed portion and a resisting rod are disposed in the roller device, and the resisting rod is elastically pressed against the toothed portion by a torsion spring, so that a user can operate a button member linked with the resisting rod to switch the roller between a fast shuttle mode and a normal roller mode.

As can be seen from the foregoing, the conventional art uses a contact type interference method to make the roller generate more sections, but the rotation mode of the roller cannot be switched in real time. After long-time use, the contact interference method may wear the roller module, so that the roller module cannot generate corresponding paragraph sense when rotating.

Therefore, how to provide a roller control mechanism capable of rapidly switching the rotation mode of the roller module and reducing the wear of the roller module is a technical problem to be solved by the invention.

Disclosure of Invention

The main objective of the present invention is to provide a roller control mechanism capable of rapidly switching the rotation mode of a roller module, and effectively reducing the wear of the roller module.

In order to achieve the above object, the present invention provides a roller control mechanism, which is suitable for a mouse device, and includes:

the support base is provided with a first support part, a second support part and a third support part which are combined; the gyro wheel module, rotationally set up in first supporting part, include: the roller body is provided with a rotating shaft; the metal ratchet wheel is connected with the rotating shaft and can synchronously rotate with the roller body; first magnetic force module installs in second supporting part, includes: the magnetic conduction elements are provided with a first end and a second end which are opposite to each other, the first end corresponds to the side edge of the metal ratchet wheel, and a replacement space is arranged between the second ends; the first magnetic element is arranged between the two magnetic conduction pieces; a second magnetic module comprising: the adjusting element is pivoted on the third supporting part; a swinging element connected with the adjusting element and corresponding to the interval for replacement; the second magnetic element is arranged at one end of the swinging piece far away from the connecting adjusting element; the third magnetic element is arranged at one end of the swinging piece far away from the connecting adjusting element and is positioned on the same swinging path with the second magnetic element; the adjusting element is used for driving the swinging element to enable the second magnetic element and the third magnetic element to enter or leave the replacing space, when the second magnetic element enters the replacing space and is opposite to the first magnetic element in the same polarity, the first end generates magnetic attraction to attract the metal ratchet wheel, so that the roller body generates paragraph sense when rotating, and when the third magnetic element enters the replacing space and is opposite to the first magnetic element in opposite polarity, the magnetic attraction of the first end is weakened, so that the roller body does not generate paragraph sense when rotating.

In the preferred embodiment, the side edge of the metal ratchet has a ring tooth structure, and the ring tooth structure includes a plurality of protruding portions and a plurality of recessed portions that are staggered.

In the preferred embodiment, the first end has a claw structure corresponding to the protrusion.

In the preferred embodiment, the two magnetic conductive elements are silicon steel sheets.

In the preferred embodiment, the first magnetic element, the second magnetic element and the third magnetic element are strong magnets.

In the preferred embodiment, the adjusting element includes a shaft portion and an adjusting portion coupled to one end of the shaft portion, the swinging element is coupled to the other end of the shaft portion opposite to the coupled adjusting portion in a radial direction, and the adjusting portion drives the swinging element to swing through the shaft portion.

In the preferred embodiment, the third supporting portion protrudes laterally with a supporting member, and the shaft portion is disposed through the supporting member.

In the preferred embodiment, the third supporting portion is concavely provided with a yielding groove on the same side of the supporting member, and the yielding groove corresponds to the swinging element and can accommodate the swinging element.

In the preferred embodiment, the mouse device has a housing, and the housing includes a lower cover and an upper cover that can be combined.

In the preferred embodiment, the adjusting portion has a knob structure, the lower cover has an adjusting hole corresponding to the knob structure, and the knob structure is exposed in the adjusting hole.

In the preferred embodiment, the support base has two fixing portions, and the fixing portions are fixedly disposed on the lower cover.

In the preferred embodiment, the operating end of the upper cover has a roller opening corresponding to the roller body, and the roller body is partially exposed in the roller opening.

In the preferred embodiment, the adjusting portion is an adjusting gear.

In the preferred embodiment, the device further comprises a driving module, wherein the driving module comprises a driving motor and a transmission gear set connected with the driving motor, and the transmission gear set is meshed with the adjusting gear to drive the adjusting element.

In the preferred embodiment, the support base further includes a fourth support portion adjacent to the third support portion, and the driving module is mounted on the fourth support portion.

In the preferred embodiment, the fourth supporting portion includes a receiving groove for receiving the driving motor.

In the preferred embodiment, the roller further includes a rotation speed detecting unit disposed at the other side of the roller body opposite to the metal ratchet, and the rotation speed detecting unit is used for detecting the rotation speed of the roller body.

In the above preferred embodiment, the rotation speed detecting unit is electrically connected to the driving module, so that the driving module can make the second magnetic element or the third magnetic element enter the replacement space based on the rotation speed of the roller body.

In the preferred embodiment, the second supporting portion includes a mounting groove and a cover plate for covering and combining with the mounting groove, and the first magnetic module is disposed in the mounting groove.

In the preferred embodiment, the cover plate has a recess corresponding to the replacement pitch.

The roller control mechanism provided by the invention has the beneficial effects that the first magnetic force module and the second magnetic force module can be utilized to adjust the rotation mode of the roller module in a non-contact mode, so that the roller body of the roller module generates no paragraph sense or multiple paragraph sense when rotating. Compared with the traditional design of adjusting the rotation mode of the roller by using a contact type interference method, the non-contact type magnetic force module can not only switch the rotation mode of the roller more quickly, but also effectively reduce the loss of the roller module.

Drawings

FIG. 1A is a perspective view of a roller control mechanism according to the present invention;

FIG. 1B is a schematic perspective view of another view of the roller control mechanism according to the present invention;

FIG. 1C is an exploded perspective view of a roller control mechanism according to the present invention;

FIG. 1D is an enlarged view of a portion of a roller control mechanism according to the present invention;

FIGS. 2A and 2B are schematic top views of the roller control mechanism according to the present invention;

FIGS. 3A and 3B are schematic side views of the roller control mechanism according to the present invention;

FIG. 4A is a schematic perspective view of a first embodiment of a mouse device of the present invention;

FIG. 4B is an exploded perspective view of a first embodiment of the mouse device of the present invention; FIG. 5 is an exploded perspective view of a second embodiment of the mouse device of the present invention.

The reference numerals are as follows:

g replacement pitch

ML1, ML2, ML3 magnetic lines

RS, RS' roller control mechanism

1. 1a mouse device

10. 10a support base

11. A first support part

111. Groove

112. The first shaft pivot hole

12. A second supporting part

121. Mounting groove

122. Cover plate

1221. Recess (es)

13. Third support part

131. Support member

1311. Second shaft pivot hole

132. Yield groove

14. Fourth support part

141. Accommodating groove

15. 15a fixing part

151. Locking hole

20. 20a roller module

21. 21a roller body

211. Rotating shaft

22. Metal ratchet wheel

221. Ring tooth structure

2211. Convex part

2212. Concave part

30. First magnetic force module

31. First magnetic element

311 N pole end

312 S pole end

32. 33 magnetic conductive element

321. 331 first end

3211. 3311 claw type structure

322. 332 second end

40. 40a second magnetic force module

41. Adjusting element

411. Shaft portion

412. 412a adjusting part

42. Swinging element

421. 422 rod end

4211. 4221 mounting hole

43. Second magnetic element

431 N pole end

432 S pole end

44. Third magnetic element

441 N pole end

442 S pole end

50. Driving module

51. Driving motor

52. Transmission gear set

60. Rotation speed detecting unit

90. 90a shell

91. 91a upper cover

911. 911a roller hole

92. 92a lower cover

921a adjusting hole

Detailed Description

The advantages and features of the present invention and the manner in which the same are accomplished will be more readily understood by reference to the following detailed description of exemplary embodiments taken in conjunction with the accompanying drawings. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, such embodiments are provided to enable those skilled in the art to more fully and fully convey the scope of the invention.

First, please refer to fig. 1A, 1B, 1C and 1D. FIG. 1A is a perspective view of a roller control mechanism according to the present invention; FIG. 1B is a schematic perspective view of another view of the roller control mechanism according to the present invention; FIG. 1C is an exploded perspective view of a roller control mechanism according to the present invention; fig. 1D is a partial enlarged view of the roller control mechanism according to the present invention. The roller control mechanism RS includes: the device comprises a support base 10, a roller module 20, a first magnetic force module 30, a second magnetic force module 40, a driving module 50 and a rotating speed detecting unit 60.

The support base 10 has a first support portion 11, a second support portion 12, a third support portion 13, a fourth support portion 14 and two fixing portions 15, wherein the roller module 20, the first magnetic module 30, the second magnetic module 40 and the driving module 50 are sequentially mounted on the first support portion 11, the second support portion 12, the third support portion 13 and the fourth support portion 14.

Referring to fig. 1C, the first supporting portion 11 has a recess 111 and two first pivot holes 112 disposed opposite to each other on a sidewall of the recess 111. The roller module 20 includes a roller body 21 and a metal ratchet 22, wherein the roller body 21 has a rotating shaft 211, and the metal ratchet 22 is disposed on one side of the roller body 21 and connected to the rotating shaft 211 to rotate synchronously with the roller body 21. The groove 111 is used for accommodating a portion of the roller module 20, and the roller module 20 is sleeved in the first pivot hole 112 by the rotating shaft 211, so that the roller module 20 is rotatably disposed on the first supporting portion 11. On the other hand, the rotation speed detecting unit 60 is disposed at the other side of the roller body 21 with respect to the metal ratchet 22. The rotation speed detecting unit 60 is used for detecting the rotation speed of the roller body 21 and outputting a corresponding control signal. In the present embodiment, the metal ratchet 22 has a ring gear structure 221 at the side edge, and the ring gear structure 221 includes a plurality of protruding portions 2211 and a plurality of recessed portions 2212 that are staggered.

The second support 12 has a mounting groove 121 and a cover plate 122 for covering the mounting groove 121. The mounting groove 121 is used for accommodating the first magnetic module 30, and one side of the cover plate 122 is provided with a notch 1221.

The first magnetic module 30 includes a first magnetic element 31 and two magnetic conductive elements 32, 33. The first magnetic element 31 has an N pole end 311 and an S pole end 312. The two magnetic conductive elements 32 and 33 have opposite first ends 321 and 331 and second ends 322 and 332, respectively, and the first ends 321 and 331 have claw structures 3211 and 3311, respectively; a replacement pitch G is formed between the second ends 322, 332.

The first magnetic element 31 is disposed between the two magnetic conductive members 31 and 32, so that the magnetic conductive members 31 and 32 can induce the magnetic field of the first magnetic element 31. In the present embodiment, the N pole 311 of the first magnetic element 31 is abutted against the magnetic conductive element 32; the S-pole end 312 of the first magnetic element 31 is abutted against the magnetic conductive element 33. In the present embodiment, the first magnetic element 31 is a strong magnet, and the two magnetic conductive elements 32 and 33 are silicon steel sheets.

When the first magnetic module 30 is disposed in the mounting groove 121, the first ends 321, 331 of the two magnetic conductive elements 31, 32 penetrate the mounting groove 121 and are close to the side edges of the metal ratchet 22, and the claw structures 3211, 3311 correspond to the protrusions 2211 on the ring gear structure 221. On the other hand, when the cover 122 is covered on the mounting groove 121, the recess 1221 corresponds to the replacement pitch G between the second ends 322, 332. In the present embodiment, although only the two claw structures of the claw structures 3211, 3311 are provided and may correspond to the two adjacent protruding portions 2211 on the ring gear structure 221, in practical application, the claw structures 3211, 3311 may be designed as multi-claw structures that are expanded to two sides and may correspond to more than two protruding portions 2211, so as to enhance the magnetic attraction force of the first ends 321, 331, and not limited to the embodiment provided in the present embodiment.

The third supporting portion 13 is disposed on the same side of the first magnetic module 30, and has a supporting member 131 protruding outwards and a recess 132 recessed inwards (as shown in fig. 1D). The support 131 may be a lug structure with two second pivot holes 1311 disposed opposite each other.

The second magnetic module 40 includes: an adjusting element 41, a swinging element 42, a second magnetic element 43 and a third magnetic element 44. The adjusting element 41 includes a shaft 411 and an adjusting portion 412 coupled to one end of the shaft 411, and the swinging element 42 is coupled to the other end of the shaft 411 opposite to the coupling adjusting portion 412 in the radial direction, so that the adjusting portion 412 can drive the swinging element 422 to swing via the shaft 411. In the present embodiment, the adjusting portion 412 is an adjusting gear having a tooth portion; the swinging element 42 has a V-shaped rod structure, and two rod end portions 421 and 422 far from the joint shaft portion 411 are respectively provided with two mounting holes 4211 and 4222 equidistant from the shaft portion 411. In the present embodiment, only the implementation of the V-shaped bar structure of the swinging element 42 is provided, but in practical application, the swinging element 42 may also have a fan-shaped structure, which is not limited to the implementation provided in the present embodiment.

The second magnetic element 43 and the third magnetic element 44 are respectively mounted in the mounting holes 4211 and 4222, so that the second magnetic element 43 and the third magnetic element 44 are located on the same swing path. In the present embodiment, the second magnetic element 43 and the third magnetic element 44 are strong magnets, and the magnetic pole ends of the second magnetic element 43 are opposite, i.e. the N pole end 431 of the second magnetic element 43 faces upward and the S pole end 432 faces downward; the N pole end 441 of the third magnetic element 44 faces downward and the S pole end 442 faces upward.

When the second magnetic module 40 is installed, the shaft 411 of the adjusting element 41 is inserted through the second shaft hole 1311 of the supporting member 131, so as to pivot the adjusting element 41 on the third supporting portion 13. On the other hand, the swinging element 41 is movable on the path formed by the replacement pitch G and the relief groove 132 corresponding to the replacement pitch G and the relief groove 132. When the adjusting element 41 drives the swinging element 42 to swing, the second magnetic element 43 and the third magnetic element 44 can be moved into or out of the replacing space G, or all or part of the swinging element 42 can be accommodated in the yielding groove 132.

The fourth supporting portion 14 has a receiving groove 141. The driving module 50 includes a driving motor 51 and a gear set 52 connected to the driving motor 51, and the accommodating groove 141 is used for accommodating the driving motor 51 of the driving module 50. When the driving motor 51 is disposed in the receiving groove 141, the driving gear set 52 is engaged with the adjusting portion 412, i.e., the adjusting gear, to thereby drive the adjusting member 41. In the present embodiment, although only the embodiment in which the driving module 50 is mounted on the supporting base 10 is described, in practical application, the driving module 50 may be mounted at any position on the housing of the mouse device, and the driving gear set 52 and the adjusting portion 412 may be engaged, which is not limited to the embodiment described in the present embodiment.

The two fixing portions 15 are used to fix the wheel control mechanism RS to the housing or the main circuit board of the mouse device. In the present embodiment, the two fixing portions 15 are adjacent to the first supporting portion 11 and the fourth supporting portion 14, and the fixing portions 15 have locking holes 151, so that locking members, such as screws (not shown), can be inserted into the locking holes 151 to screw the fixing portions 15 onto the housing or the main circuit board of the mouse device.

Please refer to fig. 2A, fig. 2B, fig. 3A and fig. 3B. FIGS. 2A and 2B are schematic top views of the roller control mechanism according to the present invention; fig. 3A and 3B are schematic side views of the roller control mechanism according to the present invention.

In fig. 2A and fig. 3A, when the adjusting element 41 drives the swinging element 42 to make the second magnetic element 43 enter the replacing space G, the second magnetic element 43 and the first magnetic element 31 are in a pole-like opposite state to form a repulsive state, i.e. the N pole end 311 of the first magnetic element 31 is opposite to the N pole end 431 of the second magnetic element 43; the S-pole end 312 of the first magnetic element 31 is opposite the S-pole end 432 of the second magnetic element 43. At this time, the magnetic lines ML1 emitted from the N pole 311 of the first magnetic element 31 and the magnetic lines ML2 emitted from the N pole 431 of the second magnetic element 43 are mutually repelled, so that the magnetic field formed by the first magnetic element 31 is offset towards the first ends 321 and 331 of the two magnetic conductive elements 31 and 32, and the first ends 321 and 331 of the magnetic conductive elements 31 and 32 generate magnetic attraction force, so that the first ends 321 and 331 can attract the metal ratchet 22 to slow down the rotation speed of the metal ratchet 22.

In addition, compared to the recess 2212 on the ring gear structure 221, since the gap between the claw structures 3211, 3311 of the first ends 321, 331 of the magnetic conductive elements 31, 32 and the protrusion 2211 on the ring gear structure 221 is smaller, when the metal ratchet 22 rotates, a larger magnetic attraction force is generated at the moment when the claw structures 3211, 3311 are opposite to the protrusion 2211, and the rotation speed of the roller body 21 can be instantaneously slowed down, so that the roller body 21 generates a sectional sense during rotation. In some possible embodiments, the roller body 21 may generate multiple paragraphs when rotating by adjusting the distance between the two protruding portions 2211 (e.g. reducing or enlarging the size of the recess 2212). Alternatively, a plurality of magnetic elements having different magnetic field strengths may be disposed on the swinging element 42, and each of the magnetic elements may be disposed so as to face the first magnetic element 31 with the same polarity. The swing element 42 switches magnetic elements with different magnetic field intensities at the replacement interval G, so that the first ends 321 and 331 of the magnetic conductive elements 31 and 32 generate different magnetic attraction forces, and the roller body 21 generates different degrees of sectional sense during rotation.

On the other hand, if the adjusting element 41 drives the swinging element 42, and both rod ends 421 and 422 of the swinging element 42 are separated from the replacing space G, for example, when the swinging element 42 is completely received in the yielding groove 132 (as shown in fig. 1D), the magnetic field of the first magnetic element 31 is not shifted, and the first ends 321 and 331 of the magnetic conductive elements 31 and 32 can only generate weak magnetic attraction force, so that the roller body 21 can only generate a less obvious sectional sense when rotating.

Please continue to refer to fig. 2B and fig. 3B. When the transmission gear set 52 (as shown in fig. 1C) of the driving module 50 drives the adjusting portion 412 of the adjusting element 41 to rotate in the reverse clock direction, the shaft portion 411 drives the swinging element 42 to disengage the second magnetic element 43 from the replacing space G, and let the third magnetic element 44 enter the replacing space G, the third magnetic element 44 and the first magnetic element 31 are opposite in opposite polarity to form a attracted state, i.e. the N-pole end 311 of the first magnetic element 31 is opposite to the S-pole end 442 of the third magnetic element 44; the S-pole end 312 of the first magnetic element 31 is opposite the N-pole end 441 of the third magnetic element 44. At this time, the magnetic flux ML1 emitted from the N pole end 311 of the first magnetic element 31 enters the S pole end 442 of the third magnetic element 44; the magnetic force line ML3 emitted from the N pole end 441 of the third magnetic element 44 enters the S pole end 312 of the first magnetic element 31, so that the first magnetic element 31 and the third magnetic element 44 form a closed magnetic field, and the magnetic attraction between the first ends 321 and 331 of the magnetic conductive elements 31 and 32 is weakened to be unable to attract the metal ratchet 22, so that the roller body 21 can rotate smoothly and no break-off feeling is generated.

With continued reference to fig. 2A, 2B, 3A and 3B. In some possible embodiments, the rotation speed detecting unit 60 (as shown in fig. 1C) may be directly or indirectly electrically connected to the driving module 50 by using a main circuit board (not shown) of the mouse device. The speed detecting unit 60 may transmit the detected rotation speed information to the driving module 50 or a main circuit board (not shown) of the mouse device, so that the driving module 50 may switch the second magnetic module 40 based on the rotation speed of the roller body 21. For example, when the user rapidly dials the roller body 21 to make the rotation speed of the roller body 21 higher than the preset rotation speed threshold, the state indicates that the user may need to rapidly rotate the roller body 21, i.e. the shuttle mode, so as to rapidly browse a plurality of pages of the display. At this time, the driving module 50 drives the adjusting element 41 and makes the third magnetic element 44 enter the replacing space G, so that the magnetic attraction between the first ends 321 and 331 of the magnetic conductive elements 31 and 32 is weakened, and the roller body 21 can rotate smoothly without any occurrence of a break.

Conversely, if the rotational speed of the roller body 21 is lower than the preset rotational speed threshold, the driving module 50 drives the adjusting element 41 to make the second magnetic element 43 enter the replacing space G, so that the first ends 321 and 331 of the magnetic conductive elements 31 and 32 generate magnetic attraction force, and the roller body 21 rotates to generate a paragraph feel.

Referring to fig. 4A and fig. 4B, fig. 4A is a schematic perspective view of a first embodiment of a mouse device according to the present invention; fig. 4B is an exploded perspective view of a first embodiment of the mouse device of the present invention. It should be noted that, the switch modules, the main circuit board and the internal circuits corresponding to the left and right keys are not shown in the exploded perspective view. The mouse device 1 includes: the housing 90 and the roller control mechanism RS. The housing 90 includes a combinable upper cover 91 and lower cover 92, wherein the operating end of the upper cover 91 has a roller opening 911. The wheel control mechanism RS may be fixedly disposed on the lower cover 92 through the fixing portion 15 of the support base 10; the roller body 21 of the roller module 20 corresponds to the roller hole 911, so that the roller body 21 can be partially exposed in the roller hole 911, and a user can dial the roller body 21 by a finger, so that the mouse device 1 outputs a corresponding control signal.

Referring to fig. 5, fig. 5 is an exploded perspective view of a mouse device according to a second embodiment of the present invention. The functional elements of the housing 90a and the roller control mechanism RS' of the mouse device 1a are substantially the same as those of the first embodiment, and will not be described herein. However, the difference is that the roller control mechanism RS' is not provided with the driving module 50, and the support base 10a is not provided with the fourth support portion 14. On the other hand, the adjusting portion 412a of the second magnetic module 40a is of a knob structure, and the lower cover 92a has an adjusting hole 921a corresponding to the adjusting portion 412 a. After the upper cover 91a is combined with the lower cover 92a, the adjusting portion 412a, i.e. the knob structure, can be exposed in the adjusting hole 412 a. Thus, the user can manually rotate the adjusting portion 412a to adjust the position of the second magnetic module 40a, so that the roller body 21a of the roller module 20a generates no or multiple paragraphs when rotating.

The roller control mechanism provided by the invention has the beneficial effects that the first magnetic force module and the second magnetic force module can be utilized to adjust the rotation mode of the roller module in a non-contact mode, so that the roller body of the roller module generates no paragraph sense or multiple paragraph sense when rotating. Compared with the traditional design of adjusting the rotation mode of the roller by a contact type interference method, the non-contact type magnetic force module not only can switch the rotation mode of the roller more quickly, but also can effectively reduce the loss of the roller module; therefore, the invention is an creation with great industrial value.

The invention is modified as desired by those skilled in the art, but is not to be construed as limited by the appended claims.

Claims (20)

1. A wheel control mechanism for a mouse device, comprising:

a supporting base, which is provided with a first supporting part, a second supporting part and a third supporting part which are combined;

a gyro wheel module, rotationally set up in this first supporting part, include:

a roller body having a rotation axis;

a metal ratchet wheel connected to the rotating shaft and capable of rotating synchronously with the roller body;

a first magnetic force module installed on the second supporting part, comprising:

two magnetic conduction elements, each magnetic conduction element is provided with a first end and a second end which are opposite, the first end corresponds to the side edge of the metal ratchet wheel, and a space for replacement is arranged between the second ends;

the first magnetic element is arranged between the two magnetic conducting pieces;

a second magnetic module, comprising:

an adjusting element pivoted on the third supporting part;

a swinging element connected with the adjusting element and corresponding to the interval for replacement;

the second magnetic element is arranged at one end of the swinging piece far away from the adjusting element; and

the third magnetic element is arranged at one end of the swinging piece far away from the adjusting element and is positioned on the same swinging path with the second magnetic element;

the adjusting element is used for driving the swinging element to enable the second magnetic element and the third magnetic element to enter or leave the replacing space, when the second magnetic element enters the replacing space and is opposite to the first magnetic element in polarity, the first end generates magnetic attraction to attract the metal ratchet wheel, so that the roller body generates paragraph sense when rotating, and when the third magnetic element enters the replacing space and is opposite to the first magnetic element in polarity, the magnetic attraction of the first end is weakened, so that the roller body does not generate paragraph sense when rotating.

2. The roller control mechanism of claim 1 wherein the side edge of the metal ratchet has a ring tooth structure comprising a plurality of protrusions and a plurality of recesses arranged alternately.

3. The roller control mechanism of claim 2 wherein the first end has a claw-type configuration corresponding to a plurality of the protrusions.

4. The roller control mechanism of claim 1 wherein the two magnetically permeable elements are silicon steel sheets.

5. The roller control mechanism of claim 1 wherein the first magnetic element, the second magnetic element and the third magnetic element are strong magnets.

6. The roller control mechanism according to claim 1, wherein the adjusting member comprises a shaft portion and an adjusting portion coupled to one end of the shaft portion, the swinging member is coupled to the other end of the shaft portion opposite to the end coupled to the adjusting portion in a radial direction, and the adjusting portion drives the swinging member to swing via the shaft portion.

7. The roller control mechanism according to claim 6, wherein the third supporting portion has a supporting member protruding laterally, and the shaft portion is disposed through the supporting member.

8. The roller control mechanism according to claim 7, wherein the third supporting portion is recessed on the same side of the supporting member to form a recess corresponding to the swinging member and capable of accommodating the swinging member.

9. The wheel control mechanism of claim 6, wherein the mouse device has a housing comprising a lower cover and an upper cover that are combinable.

10. The roller control mechanism of claim 9, wherein the adjustment portion is a knob structure, the lower cover has an adjustment hole corresponding to the knob structure, and the knob structure is exposed in the adjustment hole.

11. The roller control mechanism of claim 9, wherein the support base has at least two fixing portions, the at least two fixing portions being fixed on the lower cover.

12. The roller control mechanism of claim 9, wherein the operating end of the upper cover has a roller opening corresponding to the roller body, the roller body partially exposed in the roller opening.

13. The roller control mechanism of claim 6 wherein the adjustment portion is an adjustment gear.

14. The roller control mechanism of claim 13, further comprising a drive module including a drive motor and a drive gear set coupled to the drive motor, the drive gear set engaging the adjustment gear to drive the adjustment member.

15. The roller control mechanism of claim 14, wherein the support base further comprises a fourth support portion adjacent to the third support portion, the drive module being mounted on the fourth support portion.

16. The roller control mechanism of claim 15 wherein the fourth support portion includes a receiving slot for receiving the drive motor.

17. The roller control mechanism of claim 14, further comprising a rotational speed detecting unit disposed on the other side of the roller body with respect to the metal ratchet wheel, the rotational speed detecting unit being configured to detect a rotational speed of the roller body.

18. The roller control mechanism of claim 17, wherein the rotational speed detecting unit is electrically connected to the driving module, such that the driving module can let the second magnetic element or the third magnetic element enter the replacing space based on the rotational speed of the roller body.

19. The roller control mechanism of claim 1, wherein the second support portion comprises a mounting slot and a cover plate for covering and coupling to the mounting slot, and the first magnetic module is disposed in the mounting slot.

20. The roller control mechanism of claim 19 wherein the cover has a recess corresponding to the replacement pitch.