Mouse scroll wheel mechanism
A mouse scroll wheel mechanism is provided, including: a wheel base and a wheel body, wherein the wheel base is provided with an axial hole, and a plurality of bearings are arranged at different positions in the axial hole; a rotating shaft extending outward is arranged at the center of the wheel body, and the rotating shaft is arranged in a plurality of the bearings, so that the wheel body can rotate outside the wheel base, and the rotating shaft can also move in the bearing in an axial direction over a short distance so that the wheel body can move to a first position and a second position; the first position is a flywheel mode wherein the wheel body can rotate freely, and the second position is a toggle mode wherein the wheel body rotates intermittently. The switching to different operation modes is achieved by moving the wheel body.
1 . A mouse scroll wheel mechanism, comprising:
a wheel base, provided with an axial hole, and a plurality of bearings being provided at different positions in the axial hole;
a wheel body, disposed with a rotating shaft extending outward at a center of the wheel body, the rotating shaft being arranged in the plurality of the bearings so that the wheel body is able to rotate on an outside the wheel base, and the rotating shaft being able to move a short distance in an axial direction in the bearings so that the wheel body is able to move to a first position and a second position, the first position being a flywheel mode wherein the wheel body rotates freely by turning, and the second position being a toggle mode wherein the wheel body rotates intermittently by turning;
wherein the wheel base has a first side wall away from the wheel body, the axial hole has a hole outlet on the first side wall, and a deformable and movable metal elastic stopper plate is provided on the first side wall, one end of the metal elastic stopper plate is fixed to the wheel base, and the other end of the metal elastic stopper plate is arranged to cover or leave the hole outlet after moving, and the rotating shaft extends out of the hole outlet and pushes open the metal elastic stopper plate after moving.
2 . The mouse scroll wheel mechanism according to claim 1 , wherein the wheel base is fixed on a carrier so that the wheel body can rotate in a suspension manner.
3 . The mouse scroll wheel mechanism according to claim 1 , wherein the first position is a farthest position of the wheel body axially from the wheel base, and the metal elastic stopper plate completely covers the hole outlet when at the first position.
4 . The mouse scroll wheel mechanism according to claim 1 , wherein the axial hole includes a first hole section, a second hole section, and the hole outlet that are connected to each other, the second hole section has a diameter larger than the first hole section and the hole outlet, and the plurality of bearings are respectively located in the first hole section and the second hole section; a stopper block is fixed to a shaft wall of the rotating shaft, and the diameter of the stopper block is larger than the diameter of the first hole section and smaller than the diameter of the second hole section, and the stopper block is restricted to move only within the second hole section to limit an axial movement distance of the rotating shaft.
5 . The mouse scroll wheel mechanism according to claim 1 , wherein a magnet is embedded in the first side wall, and the magnet is arranged near the hole outlet; when the magnet attracts the metal elastic stopper plate with magnetic force, the metal elastic stopper plate completely covers the hole outlet and temporarily blocks the rotating shaft from extending out of the hole outlet.
6 . The mouse scroll wheel mechanism according to claim 1 , wherein the wheel body is provided with an annular magnetic conductive member on an inner wall facing the wheel base, and the annular magnetic conductive member has a plurality of magnetic conductive sheets which are evenly spaced and distributed in an annular shape, the wheel base has a second side wall facing the wheel body, and the second side wall is provided with at least one magnetic member, and the at least one magnetic member has a strong magnetic pole surface facing the magnetic conductive sheets in a non-contact state, and each of the magnetic conductive sheets is smaller than a pole size of the at least one magnetic member.
7 . The mouse scroll wheel mechanism according to claim 6 , wherein the second position is a closest position of the wheel body axially to the wheel base, the at least one magnetic member can attract the magnetic conductive sheets by magnetic force in a shortest distance when the at least one magnetic member and the magnetic conductive sheets are not in contact; when the wheel body rotates, intermittent magnetic restoring forces can be generated between the at least one magnetic member and the magnetic conductive sheets.
8 . The mouse scroll wheel mechanism according to claim 6 , wherein the wheel body is formed by a first shell and a second shell, joined together and partially enclosing the wheel base, and the annular magnetic conductive member is arranged on an inner wall of the first shell.
9 . The mouse scroll wheel mechanism according to claim 6 , wherein the at least one magnetic member comprises a plurality of magnetic members that are grouped in pairs and are symmetrically arranged on the second side wall.