Magnetic roller module

Abstract

The utility model relates to electronic technical field, specifically disclose a magnetic force gyro wheel module, include: base, gyro wheel subassembly, gyro wheel subassembly includes wheel body, magnetic core, wheel body's pivot is rotatably arranged to base, and wheel body rotation triggers encoding operation, magnetic core is located in wheel body and is fixedly arranged to base, and the magnetic force of magnetic core acts on wheel body and reduces the action of gravity that wheel body receives, to reduce or avoid the friction between pivot and base. Through the above -mentioned setting, not only has promoted the fluency when the user rotates the gyro wheel, has also reduced the wear and tear in the gyro wheel working process, makes the service life of gyro wheel module to be able to prolong.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, and specifically discloses a magnetic roller module. Background Technology

[0002] A mouse is an external input device for a computer, serving as an indicator for positioning on the computer's display system using horizontal and vertical coordinates. Its purpose is to simplify computer operation, replacing cumbersome keyboard commands. The mouse wheel generally refers to the component on the mouse located between the left and right buttons. A typical mouse wheel can be scrolled back and forth and is used when a scroll bar exists in the interface, such as when browsing web pages or documents.

[0003] Current mouse scroll wheels are generally installed using a traditional mechanical structure. This causes the scroll wheel's axle to experience significant friction during rotation. On the one hand, this results in greater resistance when the user rotates the scroll wheel, leading to poor smoothness during scrolling. On the other hand, this traditional mechanical installation structure causes significant wear on the scroll wheel's axle after prolonged use, affecting the normal operation of the mouse. Utility Model Content

[0004] To address at least one of the problems existing in the prior art, this utility model provides a magnetic roller module. By setting a wheel body and a magnetic core, the wheel body's axle is rotatably connected to the base. The magnetic core is located inside the wheel body and fixed relative to the base. The magnetic force of the magnetic core acts on the wheel body, reducing the force of gravity on the wheel body and thus reducing friction between the axle and the base. This improves the smoothness of the user's roller rotation and reduces wear during operation, extending the service life of the roller module.

[0005] The technical solution adopted by this utility model to solve its problem is: The magnetic roller module includes: Base; The roller assembly includes a wheel body and a magnetic core. The wheel body's axle is rotatably mounted relative to the base, and the rotation of the wheel body triggers an coded operation. The magnetic core is located inside the wheel body and is fixed relative to the base. The magnetic force of the magnetic core acts on the wheel body to reduce the effect of gravity on the wheel body, thereby reducing or avoiding friction between the axle and the base.

[0006] In some preferred embodiments, the roller assembly further includes a magnetic ring, which is fixedly disposed within the wheel body. A magnetic core is located in the inner ring of the magnetic ring, and the magnetic field of the magnetic core interacts with the magnetic field of the magnetic ring so that the magnetic force of the magnetic core acts on the wheel body.

[0007] In some preferred embodiments, a circuit board is also included, with a base mounted on the circuit board. The circuit board has a magnetic encoder corresponding to the magnetic ring. The rotation of the wheel drives the magnetic ring to rotate relative to the magnetic encoder, thereby triggering the magnetic encoder module to perform an encoding operation.

[0008] In some preferred embodiments, the roller assembly further includes a magnetic ring, which is fixedly disposed within the roller body. A magnetic core is disposed corresponding to the inner ring of the magnetic ring. The inner ring of the magnetic ring is provided with protruding teeth, which are distributed around the rotating shaft on the inner ring of the magnetic ring. A groove is formed between adjacent protruding teeth. The magnetic force received by the portion of the magnetic ring corresponding to the protruding teeth is greater than the magnetic force received by the portion of the magnetic ring corresponding to the groove.

[0009] In some preferred embodiments, magnetic coils are provided on both opposite sides of the magnetic core.

[0010] In some preferred embodiments, the base is provided with a rotating hole corresponding to the rotating shaft, and the rotating shaft is rotatably disposed in the rotating hole and rotatably disposed relative to the base.

[0011] In some preferred embodiments, the roller assembly further includes a fixing seat, on which the magnetic core is fixedly mounted. The fixing seat is located on the opposite side of the wheel body where the shaft is located. The base is provided with a snap-fit ​​groove corresponding to the fixing seat, and the fixing seat is provided with a snap-fit ​​part corresponding to the snap-fit ​​groove. The fixing seat is fixedly connected to the base by snap-fit ​​part engaging with the snap-fit ​​groove, so that the magnetic core is fixedly mounted relative to the base.

[0012] In some preferred embodiments, the mounting base is provided with a mounting groove corresponding to the magnetic core, and the magnetic core is installed in the mounting groove and fixedly mounted on the mounting base.

[0013] In some preferred embodiments, the magnetic core includes at least four magnetic blocks distributed around the axis of rotation; or, the magnetic core includes magnetic rods distributed around the axis of rotation; or, the magnetic core includes magnetic sleeves distributed around the axis of rotation.

[0014] In some preferred embodiments, the rotating shaft is provided with a magnetic sensor, and the base is provided with a magnetic encoding module corresponding to the rotating shaft. The rotation of the wheel drives the rotating shaft to rotate, causing the magnetic sensor to rotate relative to the magnetic encoding module, thereby triggering the magnetic encoding module to perform an encoding operation.

[0015] In some preferred embodiments, the circuit board is also included. The base is movably mounted on the circuit board. The circuit board is provided with a touch switch for performing a touch operation. The base is provided with a touch part corresponding to the touch switch. The base moves up and down relative to the circuit board so that the touch part triggers the touch switch to perform a touch operation.

[0016] In some preferred embodiments, a bracket is also included. The front end of the base is provided with a sliding shaft and the rear end is provided with a retaining shaft. The front end of the bracket is provided with a sliding groove corresponding to the sliding shaft and the rear end is provided with a retaining groove corresponding to the retaining shaft. The base is installed on the bracket by movably connecting the sliding shaft to the sliding groove and engaging the retaining shaft with the retaining groove, so that the base can move up and down around the retaining shaft.

[0017] In some preferred embodiments, the base is provided with a sliding channel, the bracket is provided with a sliding post corresponding to the sliding channel, and an elastic element is provided on the outer periphery of the sliding post. The base is sleeved on the sliding post through the sliding channel so that the base abuts against the elastic element, so that the base can be reset by the elastic force of the elastic element.

[0018] In some preferred embodiments, the bracket is provided with an avoidance groove corresponding to the base, and the base moves up and down around the locking shaft relative to the avoidance groove.

[0019] In summary, compared with the prior art, the magnetic roller module provided by this utility model has the following technical advantages: By setting up a wheel body and a magnetic core, the wheel body's axle is rotatably connected to the base. The magnetic core is located inside the wheel body and fixed relative to the base. The magnetic force of the magnetic core acts on the wheel body, reducing the force of gravity on the wheel body. This reduces or avoids friction between the axle and the base, improving the smoothness of the user's wheel rotation and reducing wear during operation, thus extending the service life of the wheel module. Attached Figure Description

[0020] Figure 1 This is a first schematic diagram of an embodiment of the magnetic roller module of this utility model; Figure 2 This is a first exploded view of an embodiment of the magnetic roller module of this utility model; Figure 3 This is a second schematic diagram of an embodiment of the magnetic roller module of this utility model; Figure 4 This is a second exploded view of an embodiment of the magnetic roller module of this utility model; Figure 5 This is a schematic diagram of the magnetic guide ring in an embodiment of the magnetic roller module of this utility model.

[0021] The meanings of the reference numerals in the attached figures are as follows: 1. Base; 11. Rotary hole; 12. Snap-fit ​​groove; 13. Sliding shaft; 14. Snap-fit ​​shaft; 15. Sliding channel; 16. Contact part; 17. Magnetic induction encoding module; 171. Flexible circuit board; 2. Roller assembly; 21. Wheel body; 210. Inner wall; 211. Rotating shaft; 2111. Placement groove; 212. First protruding ring; 213. First fixing hole; 22. Fixing seat; 221. Mounting groove; 222. Snap-fit ​​part; 23. Magnetic ring; 24. Magnetic core; 241. Magnetic block; 25. 1. Magnetic guide ring; 251. Raised tooth; 252. Groove; 253. Second fixing hole; 26. Fixing ring; 261. Through hole; 262. Second raised ring; 263. Third fixing hole; 27. Magnetic element; 28. Fixing shell; 281. Clearance ring groove; 3. Bracket; 31. Clearance through groove; 32. Mounting channel; 33. Sliding groove; 34. Card slot; 35. Sliding post; 36. Clearance hole; 4. Circuit board; 41. Magnetic encoder; 42. Mounting through hole; 43. Touch switch. Detailed Implementation

[0022] To better understand and implement this invention, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0023] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] First Embodiment according to Figure 1-4 As shown, this utility model provides a magnetic roller module, including: a base 1, a roller assembly 2, a bracket 3, and a circuit board 4. The roller assembly 2 is mounted on the base 1, the bracket 3 is mounted on the circuit board 4, and the base 1 is mounted on the bracket 3 and thus on the circuit board 4. In order to realize other operations besides rolling, the base 1 can also be movably mounted on the bracket 3 and thus movably mounted on the circuit board 4.

[0027] Specifically, the roller assembly 2 includes a wheel body 21 and a magnetic core 24. The axle 211 of the wheel body 21 is rotatably mounted relative to the base 1, and the rotation of the wheel body 21 triggers an coded operation. The magnetic core 24 is located inside the wheel body 21 and fixed relative to the base 1. The magnetic force of the magnetic core 24 acts on the wheel body 21 to reduce the gravitational force acting on the wheel body 21, thereby reducing or avoiding friction between the axle 211 and the base 1. That is, the magnetic field of the magnetic core 24 has an attractive force on the wheel body 21, thus overcoming part or all of the gravitational force acting on the wheel body 21, allowing the wheel body 21 to be in a certain degree of magnetic levitation. To reduce the contact area between the pivot 211 and the base 1, and to minimize the friction between the pivot 211 and the base 1, thereby improving the smoothness of use, or to make the pivot 211 completely suspended relative to the base 1, so that the pivot 211 does not directly contact the base 1 when rotating, so that no friction occurs when the user rotates the wheel 21, greatly improving the smoothness of use; in order to be able to be subjected to the magnetic force of the magnetic core 24, the wheel 21 is made of a high magnetic permeability material or a ferromagnetic material, including but not limited to iron and iron oxide, and one or more of these materials can be used.

[0028] The above settings improve the smoothness of the user's scroll wheel rotation and reduce wear on the scroll wheel during operation, thus extending the service life of the scroll wheel module.

[0029] Specifically, the roller assembly 2 also includes a magnetic ring 23, which is fixedly disposed inside the wheel body 21. The magnetic core 24 is located in the inner ring of the magnetic ring 23. The magnetic field of the magnetic core 24 interacts with the magnetic field of the magnetic ring 23, so that the magnetic force of the magnetic core 24 acts on the wheel body 21. That is, the magnetic field of the magnetic core 24 and the magnetic field of the magnetic ring 23 attract each other, so that the magnetic field of the magnetic core 24 forms an attractive force on the wheel body 21. Since the magnetic ring 23 with the above-mentioned magnetic properties is fixedly disposed inside the wheel body 21, the wheel body 21 can be made of paramagnetic material, and does not necessarily have to be made of high magnetic permeability material or ferromagnetic material. In practice, the outer ring of the magnetic ring 23 is fixedly connected to the inner wall 210 of the wheel body 21.

[0030] More specifically, the roller assembly 2 also includes a magnetic ring 25. The magnetic ring 25 can enhance the magnetic force of the magnetic core 24 by guiding the magnetic field lines of the magnetic core 24. The magnetic ring 25 is fixedly disposed inside the wheel body 21, and the axis of the magnetic ring 25 is consistent with the axis of rotation of the wheel body 21 shaft 211. The magnetic core 24 is disposed corresponding to the inner ring of the magnetic ring 25. The magnetic ring 25 can be fixedly disposed inside the wheel body 21 by its outer ring being fixedly connected to the inner wall 210 of the wheel body 21, or the magnetic ring 25 can be fixedly disposed inside the wheel body 21 by its outer ring being fixedly connected to the inner wall 210 of the magnetic ring 23. Figure 5As shown, the inner ring of the magnetic coil 25 is provided with protruding teeth 251. Multiple protruding teeth 251 are provided, and each protruding tooth 251 is distributed around the rotating shaft 211 within the inner ring of the magnetic coil 25. A groove 252 is formed between adjacent protruding teeth 251, and each protruding tooth 251 can be evenly distributed within the inner ring of the magnetic coil 25. Because the portion of the magnetic coil 25 corresponding to the protruding teeth 251 has a larger volume, the magnetic field lines of the magnetic core 24 guided by this portion are correspondingly denser. Therefore, the magnetic force experienced by the portion of the magnetic coil 25 corresponding to the protruding teeth 251 is greater than the magnetic force experienced by the portion of the magnetic coil 25 corresponding to the groove 252. This allows the user to feel different magnitudes of magnetic force on the magnetic coil 25 when slowly rotating the wheel 21, thus causing the wheel 21 to rotate with a gear-like feel, improving the user's handling experience. Conversely, when the user rotates the wheel 21 quickly, the magnetic force on the magnetic coil 25 is greater than the magnetic force experienced by the groove 252. The rapid changes in magnetic force, or the rapid switching of different magnetic forces on the magnetic ring 25, result in minimal or even negligible tooth feel, allowing the user to completely ignore the tooth feel and enabling smoother rotation of the wheel 21. This provides the user with a sense of freedom in the wheel's rolling motion. Magnetic rings 25 are located on opposite sides of the magnetic core 24, or on opposite sides of the magnetic ring 23. The protrusions 251 of each magnetic ring 25 are correspondingly positioned, as are the grooves 252, ensuring uniform force distribution on the wheel 21. Furthermore, at least two magnetic rings 25 are located on one side of the magnetic core 24 or the opposite side of the magnetic ring 23. Correspondingly, at least four magnetic rings 25 are located on opposite sides of the magnetic core 24 or the opposite sides of the magnetic ring 23, further enhancing the magnetic force of the magnetic core 24.

[0031] Furthermore, the magnetic core 24 includes at least four magnetic blocks 241, each magnetic block 241 being distributed around the rotation shaft 211. Optionally, each magnetic block 241 is distributed around the rotation shaft 211 with the axis of rotation as its center. Alternatively, each magnetic block 241 is distributed around the rotation shaft 211 with the axis of rotation as its center at equal angles, that is, each magnetic block 241 is evenly distributed around the rotation shaft 211 with the axis of rotation as its center and with equal included angles. In some optional embodiments, the magnetic core 24 may include magnetic rods distributed corresponding to the rotation shaft 211, or the magnetic core 24 may include magnetic sleeves distributed corresponding to the rotation shaft 211. These optional embodiments are not shown in the accompanying drawings, but they can all achieve the technical effects to be achieved by this application, and therefore should all be covered by the scope of description and protection of this application.

[0032] Furthermore, the roller assembly 2 also includes a fixing seat 22, on which the magnetic core 24 is fixedly mounted. The fixing seat 22 is located on the opposite side of the wheel body 21 where the rotating shaft 211 is located. The base 1 is provided with a snap-fit ​​groove 12 corresponding to the fixing seat 22, and the fixing seat 22 is provided with a snap-fit ​​part 222 corresponding to the snap-fit ​​groove 12. The fixing seat 22 is fixedly connected to the base 1 by snapping the snap-fit ​​part 222 into the snap-fit ​​groove 12, so that the magnetic core 24 is fixedly mounted relative to the base 1. Optionally, the base 1 is provided with a rotating hole 11 corresponding to the rotating shaft 211, and the rotating shaft 211 is rotatably mounted in the rotating hole 11 and rotatably mounted relative to the base 1. The snap-fit ​​groove 12 is positioned opposite to the rotating hole 11. Preferably, the fixing seat 22 is provided with a mounting groove 221 corresponding to the magnetic core 24. The magnetic core 24 is installed in the mounting groove 221 and fixedly mounted on the fixing base 22. The mounting groove 221 is located on the side of the fixing base 22 facing the wheel body 21, and the snap-fit ​​part 222 is located on the side of the fixing base 22 facing away from the wheel body 21. Optionally, the side of the fixing base 22 facing the wheel body 21 abuts against the inner end face of the wheel body 21 so that the magnetic core 24 is fixedly mounted between the inner end face of the wheel body 21 and the fixing base 22, ensuring that the magnetic core 24 is stably fixed relative to the base 1. When the magnetic core 24 includes at least four magnetic blocks 241, at least four mounting grooves 221 are also correspondingly provided on the fixing base 22. Similarly, when each magnetic block 241 is arranged in the aforementioned distribution manner, each mounting groove 221 is also arranged on the fixing base 22 in the corresponding distribution manner.

[0033] In addition, the roller assembly 2 also includes a retaining ring 26, which is used to fix the magnetic coil 25 inside the wheel body 21. The retaining ring 26 is provided with a through hole 261 corresponding to the fixing seat 22. The fixing seat 22 passes through the through hole 261 and abuts against the inner end face of the wheel body 21 on the side of the fixing seat 22 facing the wheel body 21. The wheel body 21 is provided with a first fixing hole 213. The two ends of the first fixing hole 213 extend through to the inner end face and the outer end face of the wheel body 21, respectively, and the end face of the magnetic coil 25 corresponds to the first fixing hole 213. The first fixing hole 213 is provided with a second fixing hole 253, and the two ends of the second fixing hole 253 extend through to the opposite ends of the magnetic coil 25. The fixing ring 26 is provided with a third fixing hole 263 corresponding to the second fixing hole 253, and the two ends of the third fixing hole 263 also extend through to the opposite ends of the fixing ring 26. When the magnetic coil 25 is fixedly installed in the wheel body 21 by its outer ring being fixedly connected to the inner wall 210 of the wheel body 21, the end face of the magnetic ring 23 is aligned with the end face of the magnetic coil 25. Therefore, the end face of the magnetic ring 23 is provided with a through hole corresponding to the second fixing hole 253 (not shown in the attached drawings of the specification), so that the fixing component is connected through the first fixing hole 213, the second fixing hole 253, the through hole, and the third fixing hole 263, so that the wheel body 21, the magnetic ring 25, the magnetic ring 23, and the fixing ring 26 are fixedly set along the axial direction, and the fixing ring 26 is used to achieve the effect of fixing the magnetic ring 25 and the magnetic ring 23 inside the wheel body 21; and when the magnetic ring 25 passes through its outer ring and the inner wall 21 of the magnetic ring 23, it is fixed to the wheel body 21. The magnetic core 24 is fixedly connected and fixedly installed inside the wheel body 21. At this time, the magnetic core 24 is located in the inner ring of the magnetic guide ring 25, and the magnetic ring 23 is set around the magnetic guide ring 25. The magnetic guide ring 25 is set around the magnetic core 24. The magnetic ring 23 does not need to be provided with a through hole. Thus, the fixing member passes through the first fixing hole 213, the second fixing hole 253, and the third fixing hole 263, so that the wheel body 21, the magnetic guide ring 25, and the fixing ring 26 are fixedly set along the axial direction. In this way, the fixing ring 26 is used to achieve the effect of fixing the magnetic guide ring 25 inside the wheel body 21.

[0034] Furthermore, the roller assembly 2 also includes a fixing shell 28, which is sleeved on the outer periphery of the wheel body 21 to fix the magnetic ring 23 and / or the magnetic coil 25 inside the wheel body 21. The fixing shell 28 has clearance ring grooves 281 at opposite ends, and the outer end of the wheel body 21 has a first protruding ring 212 corresponding to the clearance ring grooves 281. The first protruding ring 212 can be configured as a ring with the rotating shaft 211 as its center. The fixing ring 26 has a second protruding ring 262 corresponding to the clearance ring grooves 281 on its end facing away from the wheel body 21. The second protruding ring 262 can surround the through hole 261. The second convex ring 262 serves as the edge of the through hole 261. The fixing seat 22 passes through the avoidance ring groove 281 and then through the through hole 261, so that the fixing seat 22 abuts against the inner end face of the wheel body 21 on the side facing the wheel body 21. The first convex ring 212 cooperates with one of the avoidance ring grooves 281, and the second convex ring 262 cooperates with the other avoidance ring groove 281. Thus, the fixing shell 28 is used to fix the wheel body 21, the magnetic ring 25, the magnetic ring 23, and the fixing ring 26 axially, further ensuring the stable setting of each component in the roller assembly 2.

[0035] This application can employ either mechanical rotation encoding, where the rotating shaft 211 is inserted into the encoder's socket to convert the rotation frequency of the shaft 211 into an encoded signal, or magnetic induction encoding. One implementation of magnetic induction encoding is as follows: the rotating shaft 211 is equipped with a magnetic induction element 27, and the base 1 is equipped with a magnetic induction encoding module 17 corresponding to the rotating shaft 211. In practical applications, the rotating shaft 211 is provided with a mounting hole 2111, and the magnetic induction element 27 is disposed within the mounting hole 2111. The mounting hole 2111 can be configured as a channel extending along the axis of the rotating shaft 211. A magnetic induction encoding module 17 is disposed on the base 1 at the corresponding rotating hole 11. Block 17, the magnetic induction encoding module 17 outputs the encoding signal to the circuit main board 4 through the flexible circuit board 171. The rotation of the wheel 21 drives the rotating shaft 211 to rotate, causing the magnetic induction element 27 to rotate relative to the magnetic induction encoding module 17, thereby triggering the magnetic induction encoding module 17 to perform the encoding operation. Another implementation of magnetic induction encoding is as follows: the circuit main board 4 is provided with a magnetic induction encoding element 41 corresponding to the magnetic ring 23. This magnetic induction encoding element 41 provided on the circuit main board 4 can directly output the encoding signal to the circuit main board 4 without other components. The rotation of the wheel 21 drives the magnetic ring 23 to rotate relative to the magnetic induction encoding element 41, thereby triggering the magnetic induction encoding module 17 to perform the encoding operation. In addition to the above-mentioned mechanical rotation encoding method and magnetic induction encoding method, other methods that can achieve the purpose of this application are also covered within the scope of description and protection of this application.

[0036] To enable the mouse scroll wheel to be pressed, the main circuit board 4 is equipped with a touch switch 43 for the touch operation. The base 1 is equipped with a touch part 16 corresponding to the touch switch 43. When the user presses the scroll wheel assembly 2, the base 1 moves up and down relative to the main circuit board 4, so that the touch part 16 triggers the touch switch 43 to perform a touch operation and output a touch signal to the main circuit board 4. The bracket 3 is equipped with a clearance hole 36 corresponding to the touch part 16, through which the touch part 16 passes and contacts the touch switch 43. To enable the up and down movement of the base 1, the front end of the base 1 is equipped with a sliding shaft 13 and the rear end is equipped with a retaining shaft 14. The front end of the bracket 3 is equipped with a sliding groove 33 corresponding to the sliding shaft 13 and the rear end is equipped with a retaining groove 34 corresponding to the retaining shaft 14. The base 1 is movably connected to the slide groove 33 via the sliding shaft 13 and the locking shaft 14 is locked into the locking slot 34 and installed on the bracket 3, so that the base 1 can move up and down around the locking shaft 14 and move up and down relative to the circuit board 4. Specifically, the sliding shaft 13 moves up and down along the slide groove 33. The periphery of the slide groove 33 is closed to ensure that the sliding shaft 13 moves only within the slide groove 33. The upper side of the locking slot 34 is open so that the locking shaft 14 can be locked into the locking slot 34. Optionally, the upper side of the locking slot 34 extends inward to form a protrusion, so that the locking shaft 14 is stably locked into the locking slot 34. The protrusion can be set to be able to produce elastic deformation, thereby facilitating the locking shaft 14 to be locked into the locking slot 34 while ensuring that the locking shaft 14 is stably locked into the locking slot 34.

[0037] In some optional embodiments, the bracket 3 is provided with a clearance groove 31 corresponding to the base 1, and the base 1 moves up and down around the pivot 14 relative to the clearance groove 31. In this embodiment, three touch switches 43 are provided, and three touch parts 16 are also provided accordingly (only two are shown in the figure, one of which is not shown, but it can be concluded without doubt from the correspondence that the bracket 3 does not provide a clearance hole 36 corresponding to the touch part 16 that is not shown, and the touch part 16 that is not shown can directly pass through the clearance groove 31 and contact the touch switch 43).

[0038] To facilitate the reset of the roller assembly 2 and the base 1 after the pressing operation is completed, the base 1 is provided with a sliding channel 15, and the bracket 3 is provided with a sliding post 35 corresponding to the sliding channel 15. An elastic element (not shown in the figure) is provided on the outer periphery of the sliding post 35. The base 1 is sleeved on the sliding post 35 through the sliding channel 15 so that the base 1 abuts against the elastic element, so that the base 1 resets by the elastic force of the elastic element and drives the roller assembly 2 to reset. The elastic element can be set as a spring.

[0039] In practice, the bracket 3 is provided with mounting holes 32, and the circuit board 4 is provided with mounting holes 42 corresponding to the mounting holes 32. The bracket 3 is installed on the circuit board 4 by inserting connectors through the mounting holes 32 and mounting holes 42.

[0040] Second Embodiment Based on the same concept, this utility model also provides an electronic device that applies the magnetic roller module as described in the above embodiments.

[0041] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0042] Although alternative embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the alternative embodiments as well as all changes and modifications falling within the scope of the present invention.

[0043] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or terminal device that includes that element.

[0044] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the principle and implementation of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A magnetic roller module, characterized in that, include: Base (1); The roller assembly (2) includes a wheel body (21) and a magnetic core (24). The axle (211) of the wheel body (21) is rotatably disposed relative to the base (1). The base (1) is provided with a magnetic induction encoding module (17) corresponding to the axle (211). The rotation of the wheel body (21) triggers the magnetic induction encoding module (17) to perform encoding operations. The magnetic core (24) is located inside the wheel body (21) and is fixedly disposed relative to the base (1). The magnetic force of the magnetic core (24) acts on the wheel body (21) to reduce the effect of gravity on the wheel body (21), so as to reduce or avoid friction between the axle (211) and the base (1).

2. The magnetic roller module of claim 1, wherein, The roller assembly (2) also includes a magnetic ring (23), which is fixedly disposed inside the wheel body (21). The magnetic core (24) is located in the inner ring of the magnetic ring (23). The magnetic field of the magnetic core (24) interacts with the magnetic field of the magnetic ring (23) so that the magnetic force of the magnetic core (24) acts on the wheel body (21).

3. The magnetic roller module of claim 2, wherein, It also includes a circuit board (4), the base (1) is mounted on the circuit board (4), the circuit board (4) is provided with a magnetic encoder (41) corresponding to the magnetic ring (23), the wheel (21) rotates and drives the magnetic ring (23) to rotate relative to the magnetic encoder (41) to trigger the magnetic encoder module (17) to perform encoding operation.

4. The magnetic roller module according to any one of claims 1 to 3, wherein, The roller assembly (2) further includes a magnetic ring (25), which is fixedly disposed inside the wheel body (21). The magnetic core (24) is disposed corresponding to the inner ring of the magnetic ring (25). The inner ring of the magnetic ring (25) is provided with protruding teeth (251). The protruding teeth (251) are distributed around the rotating shaft (211) on the inner ring of the magnetic ring (25). A groove (252) is formed between adjacent protruding teeth (251). The magnetic force on the part of the magnetic ring (25) corresponding to the protruding teeth (251) is greater than the magnetic force on the part of the magnetic ring (25) corresponding to the groove (252). And / or, the base (1) is provided with a rotating hole (11) corresponding to the rotating shaft (211), and the rotating shaft (211) is rotatably disposed in the rotating hole (11) and rotatably disposed relative to the base (1).

5. The magnetic roller module according to any one of claims 1 to 3, characterized in that, The roller assembly (2) further includes a fixing seat (22), the magnetic core (24) is fixedly disposed on the fixing seat (22), the fixing seat (22) is disposed on the opposite side of the wheel body (21) on the side where the rotating shaft (211) is disposed, the base (1) is provided with a snap-fit ​​groove (12) corresponding to the fixing seat (22), the fixing seat (22) is provided with a snap-fit ​​part (222) corresponding to the snap-fit ​​groove (12), the fixing seat (22) is fixedly connected to the base (1) by snap-fitting the snap-fit ​​part (222) with the snap-fit ​​groove (12), so that the magnetic core (24) is fixedly disposed relative to the base (1).

6. The magnetic roller module of claim 5, wherein, The mounting base (22) is provided with a mounting groove (221) corresponding to the magnetic core (24), and the magnetic core (24) is installed in the mounting groove (221) and fixedly mounted on the mounting base (22).

7. The magnetic roller module according to any one of claims 1 to 3, wherein, The magnetic core (24) includes at least four magnetic blocks (241), each of the magnetic blocks (241) being distributed around the rotating shaft (211); Alternatively, the magnetic core (24) may include magnetic rods distributed corresponding to the rotating shaft (211); Alternatively, the magnetic core (24) may include a magnetic sleeve, which is distributed corresponding to the rotating shaft (211).

8. The magnetic roller module according to any one of claims 1 to 3, wherein, The rotating shaft (211) is provided with a magnetic sensor (27). The rotation of the wheel (21) drives the rotating shaft (211) to rotate, causing the magnetic sensor (27) to rotate relative to the magnetic coding module (17) to trigger the magnetic coding module (17) to perform coding operations. And / or, it also includes a circuit board (4), the base (1) is movably mounted on the circuit board (4), the circuit board (4) is provided with a touch switch (43) for performing touch operation, the base (1) is provided with a touch part (16) corresponding to the touch switch (43), the base (1) moves up and down relative to the circuit board (4) so ​​that the touch part (16) triggers the touch switch (43) to perform touch operation.

9. The magnetic roller module according to any one of claims 1 to 3, wherein, It also includes a bracket (3). The front end of the base (1) is provided with a sliding shaft (13) and the rear end is provided with a retaining shaft (14). The front end of the bracket (3) is provided with a sliding groove (33) corresponding to the sliding shaft (13) and the rear end is provided with a retaining groove (34) corresponding to the retaining shaft (14). The base (1) is movably connected to the sliding groove (33) through the sliding shaft (13) and the retaining shaft (14) is engaged with the retaining groove (34) and installed on the bracket (3), so that the base (1) can move up and down around the retaining shaft (14).

10. The magnetic roller module of claim 9, wherein, The base (1) is provided with a sliding channel (15), and the bracket (3) is provided with a sliding post (35) corresponding to the sliding channel (15). An elastic element is provided on the outer periphery of the sliding post (35). The base (1) is sleeved on the sliding post (35) through the sliding channel (15) so that the base (1) abuts against the elastic element, so that the base (1) can be reset by the elastic force of the elastic element. And / or, the bracket (3) is provided with an avoidance groove (31) corresponding to the base (1), and the base (1) moves up and down relative to the avoidance groove (31) centered on the locking shaft (14).

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