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CN-224210993-U - Vehicle-mounted screen driving mechanism and vehicle-mounted screen assembly

CN224210993UCN 224210993 UCN224210993 UCN 224210993UCN-224210993-U

Abstract

The utility model relates to a vehicle-mounted screen driving mechanism and a vehicle-mounted screen assembly, wherein the vehicle-mounted screen driving mechanism comprises a driving mechanism shell, a worm transmission part, a pair of driving shaft sleeves and a bushing, and the worm transmission part is rotatably arranged in the driving mechanism shell; the two ends of the worm driving part are symmetrically sleeved with a pair of driving shaft sleeves, the driving shaft sleeves are in clearance fit with the worm driving part, shaft sleeve mounting grooves are formed in two sides of the driving mechanism shell, the driving shaft sleeves are fixedly embedded in the shaft sleeve mounting grooves, a lining is filled between the axial through holes of the driving shaft sleeves and the end parts of the worm driving part, and the lining and the worm driving part form interference fit. The utility model provides a vehicle-mounted screen driving mechanism and a vehicle-mounted screen assembly, which solve the problems of large space occupation, high cost, high maintenance and the like of the traditional driving mechanism through an innovative structural design.

Inventors

  • ZHANG XIAOYU
  • WANG SHIHAO
  • DU BOFENG
  • YANG XUEMENG

Assignees

  • 惠州市华阳多媒体电子有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (10)

  1. 1. The utility model provides a vehicle-mounted screen actuating mechanism which characterized in that includes A drive mechanism housing (100); A worm transmission member (200) rotatably provided in the drive mechanism housing (100); The driving shaft sleeves (300) are symmetrically sleeved at two ends of the worm transmission member (200) and are in clearance fit with the worm transmission member, shaft sleeve mounting grooves (110) are formed in two sides of the driving mechanism shell (100), and the driving shaft sleeves (300) are fixedly embedded in the shaft sleeve mounting grooves (110); And the bushing (400) is filled between the axial through hole (310) of the driving shaft sleeve (300) and the end part of the worm transmission member, and the bushing (400) and the worm transmission member form interference fit.
  2. 2. The in-vehicle screen driving mechanism according to claim 1, wherein the bushing (400) is made of an elastic material.
  3. 3. The in-vehicle screen driving mechanism according to claim 2, wherein the elastic material is a polymer material.
  4. 4. The vehicle-mounted screen driving mechanism according to claim 1, wherein an anti-rotation plane (320) is provided on an outer wall of the driving shaft sleeve (300), and a limit plane (111) matched with the anti-rotation plane (320) is provided on an inner wall of the shaft sleeve mounting groove (110).
  5. 5. The vehicle-mounted screen driving mechanism according to claim 1, wherein the axial through hole (310) of the driving shaft sleeve (300) has a stepped inner wall structure, a transmission member installation area (311) and a bushing installation area (312) are formed by axially separating, the end part of the worm transmission member (200) is rotatably arranged in the transmission member installation area (311), and the bushing (400) is filled in the bushing installation area (312) and forms interference fit with the worm transmission member (200).
  6. 6. The on-vehicle screen driving mechanism according to claim 5, wherein the transmission member mounting area (311) of the stepped inner wall structure has an inner diameter matching the diameter of the worm transmission member (200), and the bushing mounting area (312) has an inner diameter larger than the diameter of the worm transmission member (200).
  7. 7. The in-vehicle screen driving mechanism according to claim 1, wherein an inner wall surface of the driving bushing (300) is provided with an antifriction coating covering a region in contact with the worm transmission member (200).
  8. 8. A vehicle screen assembly, comprising The in-vehicle screen driving mechanism according to any one of claims 1 to 7; a screen rotating shaft (500) in transmission connection with the worm transmission piece (200); and the reduction gear transmission system (600) is connected between the worm transmission piece (200) and the screen rotating shaft (500).
  9. 9. The vehicle screen assembly of claim 8, wherein the reduction gear train (600) includes a worm gear (210) that rotates synchronously with the worm drive (200), and a reduction gear set that connects the worm drive (200) with the screen shaft (500).
  10. 10. The vehicle screen assembly of claim 9, further comprising a drive motor (700), wherein an output shaft of the drive motor (700) is coupled to a drive worm (710), the drive worm (710) engaging the worm gear (210).

Description

Vehicle-mounted screen driving mechanism and vehicle-mounted screen assembly Technical Field The utility model relates to the technical field of vehicle-mounted equipment, in particular to a vehicle-mounted screen driving mechanism and a vehicle-mounted screen assembly comprising the same. Background With the rapid development of automobile intellectualization, the status of the on-board screen in automobile interior trim is increasingly important. In order to meet the demands of users for better visual experience and reasonable utilization of space in a vehicle, vehicle-mounted screens are developed towards light weight and large size. However, the conventional vehicle-mounted screen driving mechanism has a plurality of problems, and further development of the vehicle-mounted screen is restricted. The traditional vehicle-mounted screen driving mechanism is used for realizing the back driving function, namely, the screen can still be manually driven to rotate after power failure, and a plurality of distributed bearing assemblies are generally adopted for supporting the transmission part. In addition, the structure of the traditional bearing is relatively fixed, the volume of the traditional bearing is difficult to further compress, and the traditional bearing cannot meet the requirement of a vehicle-mounted screen on compact design. Meanwhile, the structure is loose, the heat dissipation path is complex, the rapid heat conduction is not facilitated, the overall heat dissipation efficiency of the mechanism is low, and the performance and the service life of the mechanism can be influenced by overheating during long-time operation. Therefore, a new vehicle-mounted screen driving mechanism capable of solving the above problems is urgently needed to meet the demand of vehicle-mounted screen development. Disclosure of utility model In view of this, the utility model provides a vehicle-mounted screen driving mechanism and a vehicle-mounted screen assembly, which solve the problems of large space occupation, high cost, high maintenance and the like of the traditional driving mechanism through innovative structural design. The aim of the utility model is achieved by the following technical scheme: A vehicle-mounted screen driving mechanism comprises a driving mechanism shell, a worm transmission part, a pair of driving shaft sleeves and a lining, wherein the worm transmission part is rotatably arranged in the driving mechanism shell, the driving shaft sleeves are symmetrically sleeved at two ends of the worm transmission part and are in clearance fit with the worm transmission part, shaft sleeve mounting grooves are formed in two sides of the driving mechanism shell, the driving shaft sleeves are fixedly embedded in the shaft sleeve mounting grooves, the lining is filled between an axial through hole of the driving shaft sleeve and the end part of the worm transmission part, and the lining and the worm transmission part form interference fit. Through the integrated design of the driving shaft sleeve and the elastic bushing, the inherent volume limitation of the traditional bearing is broken through, and a compact transmission framework with high space utilization rate is constructed. The embedded installation of the shaft sleeve and the shell saves redundant space of the outer ring and the positioning flange of the traditional bearing, and realizes synchronous optimization of axial and radial dimensions by combining the self-centering characteristic of the stepped through hole. The deformation self-adaptive capacity of the elastic bushing replaces the traditional bearing play compensation structure, so that the radial layout space is greatly reduced while the transmission precision is ensured. The assembly gap of traditional distributed bearing assembly is eliminated in the integrated design, and the actuating mechanism can closely laminate on-vehicle screen pivot system, releases more function overall arrangement space for whole car cabin. The compact structure synchronously strengthens the concentration of heat dissipation paths, improves the heat conduction efficiency and reduces the integral quality of the mechanism. The modularized packaging design enables the driving unit to be directly embedded into the narrow instrument desk, and maintenance accessibility is remarkably improved. The comprehensive improvement of space efficiency provides core support for the development of light and thin and large-sized vehicle-mounted screens, and meanwhile reduces vibration transmission and electromagnetic interference risks by shortening a transmission chain. Preferably, the bushing is made of an elastic material. The selection of the elastic bushing material realizes breakthrough promotion of the transmission interface performance. The high elastic modulus characteristic of the material forms a progressive load transmission path, and damage of impact load to the precision transmission part is effectively buffered. The vi