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CN-224210907-U - Vehicle-mounted double-degree-of-freedom screen driving mechanism

CN224210907UCN 224210907 UCN224210907 UCN 224210907UCN-224210907-U

Abstract

The utility model relates to a vehicle-mounted double-freedom-degree screen driving mechanism which comprises a frame provided with a sliding groove, a screen supporting frame for bearing a screen, a translation driving module and a rotation driving module, wherein the translation driving module comprises two groups of translation units, a first inhaul cable and a first driving unit, the two groups of translation units are symmetrically and fixedly connected to two sides of the screen supporting frame, each group of translation units is connected with a first driving block which is in sliding fit with the sliding groove through a pivot point, the rotation driving module comprises two groups of rotation units, a second inhaul cable and a second driving unit, the two groups of rotation units are symmetrically hinged to two sides of the screen supporting frame, and each group of rotation units is connected with a second driving block which is in sliding fit with the sliding groove through a linkage mechanism. The utility model provides a vehicle-mounted double-degree-of-freedom screen driving mechanism, which aims to overcome the defects of the existing vehicle-mounted screen driving mechanism in the aspects of space adaptability, motion control precision, mute performance and the like, realize flexible motion of a screen on two degrees of freedom and improve vehicle-mounted human-computer interaction experience.

Inventors

  • LIU SHUWEN
  • ZHANG TIANBAO
  • YANG XUEMENG
  • REN XIANMIN

Assignees

  • 惠州市华阳多媒体电子有限公司

Dates

Publication Date
20260508
Application Date
20250512

Claims (10)

  1. 1. The vehicle-mounted double-degree-of-freedom screen driving mechanism is characterized by comprising a frame (1) provided with a chute (11), a screen support frame (2) for bearing a screen, a translation driving module (3) and a rotation driving module (4), The translation driving module (3) comprises: Two groups of translation units (31) symmetrically and fixedly connected to two sides of the screen support frame (2), wherein each group of translation units (31) is connected with a first driving block (312) which is in sliding fit with the chute (11) through a pivot point; A first cable (32) connected to the first driving blocks (312) on both sides, and a first driving unit (33) driving the first cable (32); The rotation driving module (4) includes: Two groups of rotating units (41) symmetrically hinged to two sides of the screen support frame (2), wherein each group of rotating units (41) is connected with a second driving block (43) which is in sliding fit with the sliding groove (11) through a linkage mechanism (42); a second cable (44) connected to the second driving blocks (43) on both sides, and a second driving unit (45) driving the second cable (44); The screen support frame (2) translates along the sliding groove (11) when the first driving unit (33) and the second driving unit (45) are synchronously driven, the second driving block (43) and the first driving block (312) form displacement difference when the first driving unit and the second driving unit are differentially driven, and the screen support frame (2) is forced to rotate around a pivot point of the translation unit (31) through the linkage mechanism (42).
  2. 2. The vehicle-mounted two-degree-of-freedom screen driving mechanism according to claim 1, wherein the translation unit (31) comprises a fixing piece (313) fixedly connected with the screen support frame (2), and the fixing piece (313) is pivoted with the first driving block (312) through a first rotating shaft (314) to form the pivot point.
  3. 3. The vehicle-mounted two-degree-of-freedom screen driving mechanism according to claim 1, wherein the linkage mechanism (42) includes a link (421) having one end hinged to the screen support frame (2), and a rotating member (422) connecting the link (421) and the second driving block (43).
  4. 4. The vehicle-mounted two-degree-of-freedom screen driving mechanism according to claim 1, wherein the connecting rod (421) is hinged to the screen support frame (2) through a second rotating shaft (423), the connecting rod (421) is hinged to the rotating member (422) through a third rotating shaft (424), and the rotating member (422) is pivoted to the second driving block (43) through a fourth rotating shaft (425).
  5. 5. The vehicle-mounted two-degree-of-freedom screen driving mechanism according to claim 1, wherein the first driving unit (33) and the second driving unit (45) each include a driving motor (331), a worm (332) driven by the driving motor (331), a worm wheel (333) engaged with the worm (332), and a winding wheel (334) synchronously rotating with the worm wheel (333), wherein the first cable (32) and the second cable (44) are wound around the corresponding winding wheel (334), respectively.
  6. 6. The vehicle-mounted dual-degree-of-freedom screen driving mechanism according to claim 1, wherein the worm (332) is connected with the driving motor (331) through a plurality of couplings (3321), and damping silica gel pads (3322) are arranged between the couplings (3321).
  7. 7. The vehicle-mounted dual-degree-of-freedom screen driving mechanism according to claim 1, wherein the worm wheel (333) is connected with the winding wheel (334) through a worm wheel rotating shaft (3331), a rotary damping assembly (3332) is arranged among the worm wheel rotating shaft (3331), the worm wheel (333) and the winding wheel (334), and the rotary damping assembly (3332) comprises a friction plate (33321) and a shaft sleeve assembly (33322).
  8. 8. The vehicle-mounted two-degree-of-freedom screen driving mechanism according to claim 1, wherein an elastic cushion (4211) is provided between the connecting rod (421) and the screen support frame (2).
  9. 9. The vehicle-mounted dual-freedom-degree screen driving mechanism according to claim 1, wherein the first inhaul cable (32) and the second inhaul cable (44) respectively comprise at least one main driving cable and at least one auxiliary positioning cable, two ends of the main driving cable are respectively connected with the corresponding two-side first driving blocks (312) or the corresponding two-side second driving blocks (43), the middle section is wound on the corresponding winding wheel (334), and two ends of the auxiliary positioning cable are respectively connected with the corresponding two-side first driving blocks (312) or the corresponding two-side second driving blocks (43) and the middle section and are in tension state extension.
  10. 10. The vehicle-mounted two-degree-of-freedom screen driving mechanism according to claim 1, wherein a limiting block (111) is arranged in the sliding groove (11), and a position sensor (1111) is installed on the limiting block (111).

Description

Vehicle-mounted double-degree-of-freedom screen driving mechanism Technical Field The utility model relates to the technical field of vehicle-mounted human-computer interaction equipment, in particular to a vehicle-mounted double-freedom-degree screen driving mechanism. Background Along with the continuous promotion of the intelligent process of the automobile, the functions of the vehicle-mounted screen in the field of man-machine interaction are more and more critical. In the past, traditional vehicle-mounted screens have had a relatively single function and often were capable of simple display at a fixed angle only. This limitation makes it simply unable to meet the increasingly diverse practical use demands of users. Specifically, among various driving scenarios, both the driver and the passenger may face situations where adjustments to screen position and angle are required. For example, in long distance driving, the driver may want to slightly lower the screen angle in order to more clearly view the navigation information, and when the rear passenger wants to operate the screen to view the entertainment content, the rear passenger may need to tilt the screen backward by a certain angle, so as to obtain more ideal visual experience. However, a series of problems are common to the screen driving mechanisms currently available on the market. On the one hand, the structure design is relatively complex, which not only causes that a larger space is occupied in the vehicle, but also increases the difficulty of production, manufacture and later maintenance, and on the other hand, when the driving mechanisms realize the screen angle adjusting function, the driving mechanisms are difficult to achieve an accurate control effect with two degrees of freedom, so that the accuracy of screen adjustment is greatly reduced. In addition, the traditional transmission mode is extremely easy to generate noise in the running process. At the moment of pursuing a very good riding experience, silence in a vehicle is one of important indexes for measuring the quality of the vehicle, and the noise can certainly cause interference to the quiet environment in the vehicle, so that the overall feeling of a user is seriously affected. It follows that these problems are highly desirable to be solved for users who seek a high quality ride experience. Disclosure of utility model In view of the above, the utility model provides a vehicle-mounted dual-degree-of-freedom screen driving mechanism, which solves the defects of the existing vehicle-mounted screen driving mechanism in the aspects of space adaptability, motion control precision, mute performance and the like, realizes flexible motion of a screen in two degrees of freedom and improves the experience of vehicle-mounted human-computer interaction. The aim of the utility model is achieved by the following technical scheme: The vehicle-mounted double-degree-of-freedom screen driving mechanism comprises a frame provided with a sliding groove, a screen supporting frame for bearing a screen, a translation driving module and a rotation driving module, wherein the translation driving module comprises two groups of translation units, a first inhaul cable and a first driving unit, the two groups of translation units are symmetrically and fixedly connected to two sides of the screen supporting frame, each group of translation units is connected with a first driving block which is in sliding fit with the sliding groove through a pivot point, the first inhaul cable is connected with the first driving blocks at two sides, the first driving unit drives the first inhaul cable, the rotation driving module comprises two groups of rotation units, a second inhaul cable and a second driving unit, the two groups of rotation units are symmetrically hinged to two sides of the screen supporting frame, each group of rotation units is connected with a second driving block which is in sliding fit with the sliding groove through a linkage mechanism, the second inhaul cable is connected with the second driving blocks at two sides, the second driving unit drives the second inhaul cable, the translation driving module and the rotation driving module share the sliding groove, when the first driving unit and the second driving unit are synchronously driven by the pivot point, the screen supporting frame is translated along the sliding groove, and when the first driving unit and the first driving block are in a differential mode, the second driving block and the first driving block form a displacement difference, and the second driving unit is forced to rotate around the screen supporting frame through the pivot point. The innovative scheme realizes breakthrough technology upgrading in the field of vehicle-mounted man-machine interaction, and compared with the traditional product, the system architecture innovation and the function integration level of the system are obviously improved. According to the scheme, a co