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CN-224203669-U - Mouse roller encoder and mouse

CN224203669UCN 224203669 UCN224203669 UCN 224203669UCN-224203669-U

Abstract

The utility model discloses a mouse wheel encoder and a mouse, wherein the encoder comprises a gear code wheel shaft, a bearing, a shell, a code wheel body, a photoelectric encoder chip and a PCB (printed circuit board), wherein one end of the gear code wheel shaft is provided with an inner hexagonal hole for being connected with a mouse wheel, the code wheel body is arranged at the other end of the gear code wheel shaft, the surface of the code wheel body is provided with periodically distributed bright and dark stripes, and the photoelectric encoder chip is integrated on the PCB and comprises an LED light source and a receiving chip. By constructing non-contact electromechanical-optical-electrical signal conversion, the mechanical motion of the roller is converted into high-density electrical pulse output, compared with the traditional encoder contact mode, the signal error and component abrasion caused by physical friction are eliminated, the defects of low roller detection precision and easy failure after long-term use are overcome, meanwhile, the roller can support undamped rapid rolling due to non-contact resistance, so that the service life of the encoder is obviously prolonged, and the user experience is optimized.

Inventors

  • XIA TAO
  • CAI JIWEN
  • YANG LIN

Assignees

  • 苏州安必轩微电子技术有限公司

Dates

Publication Date
20260505
Application Date
20250519

Claims (8)

  1. 1. The mouse wheel encoder comprises a gear code wheel shaft (1), a bearing (2), a shell (3), a code wheel body (4), a photoelectric encoder chip and a PCB (5), and is characterized in that: one end of the gear code wheel shaft (1) is provided with an inner hexagonal hole (11) for connecting with a mouse wheel; the code wheel body (4) is arranged at the other end of the gear code wheel shaft (1), and the surface of the code wheel body is provided with periodically distributed bright and dark stripes; The photoelectric encoder chip is integrated on the PCB (5) and comprises an LED light source and a receiving chip, wherein the LED light source is used for emitting light rays towards the code disc body (4), and the receiving chip is used for detecting light signals reflected by the code disc body (4) and converting the light signals into electric pulses; The gear code wheel shaft (1) is coated by the shell (3), the bearing (2), the code wheel body (4) and the PCB (5) are arranged on the middle of the gear code wheel shaft (1), and the bearing (2) is used for supporting the gear code wheel shaft (1) to rotate.
  2. 2. The mouse wheel encoder according to claim 1, wherein the photoelectric encoder chip is of a reflective structure, the LED light source and the receiving chip are located on the same side of the code wheel body (4), an inner ring of the bearing (2) is fixed with the side face of the gear code wheel shaft (1), and an outer ring of the bearing is fixed with the inner side of the shell (3).
  3. 3. The mouse wheel encoder of claim 1, wherein the receiving chip comprises a photodiode array and a signal processing module, and a minimum detection unit size of the photodiode array is in a micrometer scale.
  4. 4. The mouse wheel encoder of claim 1, wherein one end of the gear code wheel shaft (1) is fixed with a mounting column (12), the middle part of the code wheel body (4) is connected with the mounting column (12) in a clamping or thread fixing manner, and the bright and dark stripes are uniformly distributed along the circumferential direction.
  5. 5. A mouse wheel encoder according to claim 1, wherein the PCB (5) is fixed on the inner wall of the housing (3) by screws, and the mounting position of the photoelectric encoder chip is vertically aligned with the rotation plane of the code wheel body (4).
  6. 6. The mouse wheel encoder according to claim 1, wherein a connecting strip (6) is installed on one side of the shell (3) facing the gear code wheel shaft (1), an elastic sheet (61) is fixed on the top of the connecting strip (6), and the top of the elastic sheet (61) is located between adjacent teeth of the gear code wheel shaft (1) and is used for providing a rolling feel of the wheel.
  7. 7. A mouse wheel encoder according to claim 6, characterized in that the connecting strip (6) is fixed on one side of the housing (3) by means of pins or screws.
  8. 8. A mouse comprising a mouse wheel encoder as claimed in any one of claims 1 to 7.

Description

Mouse roller encoder and mouse Technical Field The utility model relates to the technical field of mice, in particular to a mouse wheel encoder and a mouse. Background The mouse is used as one of important equipment for man-machine interaction, and the performance and the precision of the mouse directly influence the use experience of a user. The mouse encoder is used as a key component in the mouse and is responsible for converting mechanical movements (such as rolling and moving) of the mouse into electric signals, and then the electric signals are analyzed into corresponding actions of a cursor on a screen by a computer system. The traditional mouse wheel encoder mainly relies on a spring contact type mechanical structure to realize detection and output of rolling signals. Such encoders are generally composed of a metal spring, a rotating shaft and a conductive contact, the working principle of which depends on the periodic contact and separation of the spring and the contact, and a pulse signal is generated by mechanical friction. Due to the inherent characteristics of physical contact, the number of single-turn pulses of such encoders is generally low (e.g., 12 or 24 pulses), resulting in insufficient signal resolution when the scroll wheel is rotated, especially when browsing long documents or performing high-precision design, the user needs to scroll the scroll wheel frequently to reach the target position, and the operation efficiency is low. In addition, the long-term use of the contact structure can lead to abrasion of the elastic sheet and the contact, thereby leading to signal jitter, false triggering and even complete failure, and seriously affecting the service life of the encoder. Disclosure of Invention The utility model overcomes the defects of the prior art and provides a mouse wheel encoder and a mouse. In order to achieve the aim, the utility model adopts the technical scheme that the mouse wheel encoder comprises a gear code wheel shaft, a bearing, a shell, a code wheel body, a photoelectric encoder chip and a PCB (printed circuit board), and is characterized in that: one end of the gear code wheel shaft is provided with an inner hexagonal hole for being connected with a mouse wheel; the code disc body is arranged at the other end of the gear code disc shaft, and the surface of the code disc body is provided with periodically distributed bright and dark stripes; the photoelectric encoder chip is integrated on the PCB and comprises an LED light source and a receiving chip, wherein the LED light source is used for emitting light rays towards the code disc body, and the receiving chip is used for detecting light signals reflected by the code disc body and converting the light signals into electric pulses; The casing cladding the gear code wheel axle the bearing the code wheel body reaches the PCB board, the bearing is installed gear code wheel axle middle part is used for supporting gear code wheel axle rotates. In a preferred embodiment of the utility model, the photoelectric encoder chip has a reflective structure, the LED light source and the receiving chip are positioned on the same side of the code wheel body, the inner ring of the bearing is fixed with the side surface of the gear code wheel shaft, and the outer ring is fixed with the inner side of the shell. In a preferred embodiment of the present utility model, the receiving chip includes a photodiode array and a signal processing module, and a minimum detection unit size of the photodiode array is in a micrometer scale. In a preferred embodiment of the present utility model, an installation column is fixed at one end of the gear code wheel shaft, the middle part of the code wheel body is connected with the installation column by a clamping or thread fixing manner, and the bright and dark fringes are uniformly distributed along the circumferential direction. In a preferred embodiment of the present utility model, the PCB is fixed to the inner wall of the housing by screws, and the mounting position of the photoelectric encoder chip is vertically aligned with the rotation plane of the code wheel body. In a preferred embodiment of the present utility model, a connecting strip is installed on a side of the housing facing the gear code wheel shaft, an elastic piece is fixed on the top of the connecting strip, and the top of the elastic piece is located between adjacent teeth of the gear code wheel shaft, so as to provide a rolling feel for rolling the roller. In a preferred embodiment of the utility model, the connecting strip is fixed on one side of the housing by means of pins or screws. The present utility model provides a mouse comprising a mouse wheel encoder as claimed in any one of the preceding claims. The utility model solves the defects existing in the background technology, and has the following beneficial effects: (1) The utility model provides a mouse wheel encoder and a mouse, wherein a gear code wheel shaft is matched w