Shockproof fixed type vehicle-mounted display

Abstract

The utility model belongs to vehicle display technical field, and disclose a kind of shockproof fixed type vehicle display, including ceiling shell, fixed frame is fixed to the back of ceiling shell outside;Display screen, rotation is arranged in the inside of ceiling shell, the back of display screen outside is fixed with slide rail frame, the inside of slide rail frame is slidably equipped with sliding block;Connecting rod assembly, it is set in the outside of ceiling shell and display screen, and with fixed frame and sliding block are all movably connected, for supporting stable display screen after expansion.The utility model is through ball, spring piece and so on Component is through elastic buffer and rolling friction absorption vibration energy, the double limit of connecting rod assembly, radial constraint and magnetic attraction positioning of dovetail structure then form multidimensional limit network, jointly ensure that display screen can resist vibration impact in the driving of vehicle in storage and expansion state, give consideration to use convenience and structural stability.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle display technology, specifically a shockproof fixed vehicle display. Background Technology

[0002] In-vehicle displays are electronic display devices specifically designed and installed inside vehicles to display various types of information. They are a core component of modern automotive infotainment systems and human-machine interaction.

[0003] Among them, the ceiling-mounted display for buses is a liquid crystal display device specially designed to be installed on the roof of buses or coaches. It is fixed to the roof with a special bracket. The screen can be folded or flipped. When not in use, it can be folded up and close to the roof to save interior space. It is a common in-vehicle audio-visual device for long-distance passenger transport and tourist buses.

[0004] During the operation of a bus, the engine running, minor road bumps, speed bumps, potholes, and other factors all generate vibrations of varying frequencies. When a ceiling-mounted display is in use, the structure of the display screen will be subjected to varying degrees of vibration. Over long-term vehicle operation, the vibration can cause collisions and wear between the display's outer casing and internal mechanical structure, affecting its service life. In view of this, a shockproof fixed vehicle-mounted display is proposed to solve the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background section, this utility model provides a shockproof fixed vehicle display.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shockproof fixed vehicle display, including a ceiling-mounted shell, a fixing frame fixedly mounted on the back of the outer side of the ceiling-mounted shell, a display screen rotatably mounted on the inner side of the ceiling-mounted shell, a slide rail fixedly mounted on the back of the outer side of the display screen, a slider slidably mounted on the inner side of the slide rail, and a connecting rod assembly mounted on the outer side of the ceiling-mounted shell and the display screen, and movably connected to both the fixing frame and the slider, for supporting the display screen after it is stably unfolded. The bottom of the ceiling-mounted shell has a storage groove, and the display screen slidably mounted on the inner side of the storage groove. A positioning and fixing assembly is provided between the slide rail and the slider. The connecting rod assembly includes a main rod and a secondary rod, the main rod being rotatably connected to the fixing frame and the secondary rod to the slider, respectively. A limiting block is fixedly mounted at the end of the secondary rod. A limiting groove is provided on the outer side of the main rod, and the secondary rod and the limiting block slidably mounted on the inner side of the limiting groove, with the limiting groove limiting the sliding of the limiting block. A snap-fit ​​assembly is provided between the limiting block and the main rod.

[0007] Preferably, the snap-fit ​​assembly includes a spring, the limiting block is fixedly disposed inside the limiting block, the end of the spring is fixedly provided with a snap-fit ​​block, the snap-fit ​​block is slidably disposed inside the limiting block, the outer side of the main rod is provided with a snap-fit ​​groove, and the snap-fit ​​block is slidably snap-fitted inside the snap-fit ​​groove.

[0008] Preferably, the slide rail frame has symmetrical dovetail grooves on its inner side, and the slider has symmetrical protrusions fixed on both sides. The dovetail grooves and protrusions are designed as dovetail structures.

[0009] Preferably, the dovetail groove has a rolling groove on its side wall, the protrusion has a limiting groove on its outer side, and a plurality of balls are provided between the rolling groove and the limiting groove.

[0010] Preferably, the positioning and fixing component includes a magnetic block, which is symmetrically fixed inside the slide rail frame, and a magnetic sheet is fixedly provided at the bottom of the slider, with the magnetic sheet and the magnetic block magnetically attracted to each other.

[0011] Preferably, the extension lengths of the main rod and the auxiliary rod are adapted to the length of the display screen after it is rotated and opened.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses components such as ball bearings and springs to absorb vibration energy through elastic buffering and rolling friction. The dual limiting of the linkage assembly, the radial constraint of the dovetail structure, and the magnetic positioning form a multi-dimensional limiting network, which together ensures that the display screen can withstand the vibration and impact of the vehicle in both the stored and unfolded states, taking into account both ease of use and structural stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the back of the present invention when unfolded; Figure 3 This is a schematic diagram of the combined structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the slide rail frame of this utility model; Figure 5 This is a schematic diagram of the slider structure of this utility model; Figure 6 for Figure 5 Enlarged view of point A.

[0014] In the diagram: 1. Ceiling housing; 11. Fixing frame; 2. Display screen; 21. Slide rail; 22. Dovetail groove; 23. Roller groove; 24. Slider; 25. Ball bearing; 26. Magnetic block; 3. Linkage assembly; 31. Main rod; 32. Sub-rod; 33. Limiting slide groove; 34. Limiting block; 35. Spring component; 36. Locking block; 37. Locking groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1 to 6 As shown, this utility model provides a shockproof fixed vehicle display, including a ceiling-mounted housing 1, a display screen 2, and a connecting rod assembly 3. A fixing frame 11 is fixedly mounted on the outer back of the ceiling-mounted housing 1. The display screen 2 is rotatably mounted on the inner side of the ceiling-mounted housing 1. A slide rail 21 is fixedly mounted on the outer back of the display screen 2, and a slider 24 is slidably mounted on the inner side of the slide rail 21. The connecting rod assembly 3 is located on the outer side of the ceiling-mounted housing 1 and the display screen 2, and is movably connected to both the fixing frame 11 and the slider 24 to support the display screen 2 after it is stably unfolded. The bottom of the ceiling-mounted housing 1 has a storage groove, and a display screen is slidably mounted on the inner side of the storage groove. The display screen 2 has a positioning and fixing component between the slide rail 21 and the slider 24. The connecting rod assembly 3 includes a main rod 31 and a secondary rod 32. The main rod 31 is rotatably connected to the fixing frame 11 and the secondary rod 32 is rotatably connected to the slider 24. A limiting block 34 is fixedly provided at the end of the secondary rod 32. A limiting groove 33 is provided on the outer side of the main rod 31. The secondary rod 32 and the limiting block 34 are slidably provided on the inner side of the limiting groove 33. The limiting groove 33 limits the sliding of the limiting block 34. A snap-fit ​​component is provided between the limiting block 34 and the main rod 31. The extension length of the main rod 31 and the secondary rod 32 is adapted to the length of the display screen 2 after it is rotated and opened.

[0017] When the monitor is not in use, the display screen 2 is stored in the storage slot at the bottom of the ceiling housing 1, with the entire display screen 2 embedded inside the ceiling housing 1. When the monitor needs to be used, external force drives the display screen 2 to rotate and unfold around the rotation connection point inside the ceiling housing 1. During this process, the display screen 2 drives the slide rail 21 on the back to move synchronously. The slider 24 inside the slide rail 21 slides relative to the back due to the traction of the connecting rod assembly 3. One end of the main rod 31 of the connecting rod assembly 3 is rotatably connected to the fixed frame 11, and the other end cooperates with the secondary rod 32 through the limiting slide groove 33. One end of the secondary rod 32 rotates with the slider 24. The connecting rod assembly 3 is connected, and the limiting block 34 at its end slides along the trajectory within the limiting groove 33 of the main rod 31, realizing the extension linkage between the main rod 31 and the auxiliary rod 32, thereby assisting the display screen 2 in completing the unfolding action. After the display screen 2 is fully unfolded, the connecting rod assembly 3 achieves stable support through a double limiting structure. First, the limiting block 34 of the auxiliary rod 32 slides to its limit position within the limiting groove 33 of the main rod 31, and the limiting groove 33 forms a mechanical block on the limiting block 34, limiting further relative movement between the main rod 31 and the auxiliary rod 32. Second, the locking component between the limiting block 34 and the main rod 31 is activated, realizing the linkage assembly 3. The extension length is fixed. At the same time, the positioning and fixing components between the slide rail 21 and the slider 24 work synchronously to strengthen the posture locking of the display screen 2 and jointly resist the bumps and vibrations during vehicle movement. The maximum extension length of the main rod 31 and the auxiliary rod 32 is precisely designed to match the length of the display screen 2 after it is rotated and opened. When the display screen 2 is fully extended to the best viewing angle required by the user, the main rod 31 and the auxiliary rod 32 are just extended to their limit positions. At this time, the limit block 34 reaches the end of the limit slide groove 33, and the locking component completes the locking synchronously, so that the connecting rod assembly 3 and the display screen 2 form a stable triangle. The support structure provides buffering and guidance for the rotation of the display screen 2 through the sliding cooperation between the slider 24 and the slide rail 21, avoiding jamming during the unfolding process. The linkage structure of the main rod 31 and the auxiliary rod 32 makes the unfolding trajectory of the display screen 2 controllable, making operation labor-saving and the posture stable, preventing structural damage caused by uneven manual unfolding force. At the same time, the double limit structure greatly improves the stability of the display screen 2 after unfolding, avoiding shaking or angle deviation caused by vehicle vibration. The supporting effect of the connecting rod assembly 3 makes the display screen 2 evenly stressed, dispersing the pressure of its own weight on the rotating connection point and extending the service life of the device.

[0018] like Figure 5 and Figure 6 As shown, the snap-fit ​​assembly includes a spring 35, a limiting block 34 fixedly disposed inside the limiting block 34, a snap-fit ​​block 36 fixedly disposed at the end of the spring 35, the snap-fit ​​block 36 slidably disposed inside the limiting block 34, a snap-fit ​​groove 37 is opened on the outer side of the main rod 31, and the snap-fit ​​block 36 is slidably snap-fitted inside the snap-fit ​​groove 37.

[0019] When the auxiliary rod 32 drives the limiting block 34 to slide within the limiting groove 33 of the main rod 31, the locking block 36 is compressed by the side wall of the limiting groove 33 to press the spring 35. When it slides to the position of the slot 37, the spring 35 resets and pushes the locking block 36 into the slot 37, thereby realizing the locking and fixing of the main rod 31 and the auxiliary rod 32. When folding is required, the external force pushes the display screen 2 to make the locking block 36 compress the spring 35 again to disengage from the slot 37 and release the fixation.

[0020] like Figures 4 to 5 As shown, the slide rail 21 has dovetail grooves 22 symmetrically opened on the inner side, and the slider 24 has protrusions fixed symmetrically on both sides. The dovetail grooves 22 and the protrusions are set with dovetail structure. The side wall of the dovetail groove 22 has a rolling groove 23, and the outer side of the protrusion has a limiting groove. Several balls 25 are provided between the rolling groove 23 and the limiting groove.

[0021] The slide rail 21 has symmetrical dovetail grooves 22 on its inner side. The protrusions on both sides of the slider 24 adopt a dovetail structure that matches the dovetail groove 22. The two form a tenon-and-mortise sliding fit. This structure allows the slider 24 to slide only along the length of the dovetail groove 22 in the slide rail 21 and prevents it from disengaging in a direction perpendicular to the sliding direction, thus achieving radial limiting of the slider 24. Several balls 25 are set between the rolling groove 23 on the side wall of the dovetail groove 22 and the limiting groove of the protrusion of the slider 24. When the slider 24 slides in the slide rail 21, the balls 25 roll between the rolling groove 23 and the limiting groove, converting the sliding friction between the slider 24 and the slide rail 21 into rolling friction, thereby reducing frictional resistance.

[0022] like Figure 4 As shown, the positioning and fixing component includes a magnetic block 26, which is symmetrically fixed inside the slide rail frame 21. A magnetic sheet is fixed at the bottom of the slider 24, and the magnetic sheet is magnetically attracted to the magnetic block 26.

[0023] The positioning and fixing components adopt a magnetic attraction method. The magnetic blocks 26 symmetrically fixed inside the slide rail 21 and the magnetic sheet at the bottom of the slider 24 form a magnetic attraction connection. During the unfolding or retraction of the display screen 2, when the slider 24 slides to a specific position, such as the unfolding limit or the initial retraction position, the magnetic blocks 26 and the magnetic sheet are attracted by magnetic force to assist in positioning the slider 24. When the external force exceeds the magnetic force, the two can separate without affecting the movement of the components.

[0024] Working principle and usage process of this utility model: When the monitor is not in use, the display screen 2 is stored in the storage slot at the bottom of the ceiling housing 1, with the entire display screen 2 embedded inside the ceiling housing 1. When the monitor needs to be used, external force drives the display screen 2 to rotate and unfold around the rotation connection point inside the ceiling housing 1. During this process, the display screen 2 drives the slide rail 21 on the back to move synchronously. The slider 24 inside the slide rail 21 slides relative to the slider due to the traction of the linkage assembly 3. One end of the main rod 31 of the linkage assembly 3 is rotatably connected to the fixed frame 11, and the other end cooperates with the secondary rod 32 through the limiting slide groove 33. One end of the secondary rod 32 is rotatably connected to the slider 24, and the limiting block 34 at its end slides along the track in the limiting slide groove 33 of the main rod 31, realizing the extension linkage of the main rod 31 and the secondary rod 32, thereby assisting the display screen 2 to complete its extension. Upon unfolding, once the display screen 2 is fully unfolded, the linkage assembly 3 achieves stable support through a double limiting structure. Firstly, the limiting block 34 of the secondary rod 32 slides to its limit position within the limiting groove 33 of the main rod 31, with the limiting groove 33 mechanically blocking the limiting block 34 and restricting further relative movement between the main rod 31 and the secondary rod 32. Secondly, the locking assembly between the limiting block 34 and the main rod 31 activates, fixing the extension length of the linkage assembly 3. Simultaneously, the positioning and fixing assembly between the slide rail 21 and the slider 24 works synchronously to strengthen the attitude locking of the display screen 2, jointly resisting bumps and vibrations during vehicle movement. The maximum extension lengths of the main rod 31 and the secondary rod 32 are precisely designed to match the length of the display screen 2 after it is rotated open. When the display screen 2 is fully unfolded to… When the user's desired optimal viewing angle is reached, the main rod 31 and the secondary rod 32 extend to their extreme positions. At this point, the limiting block 34 reaches the end of the limiting slide groove 33, and the locking assembly locks in sync, forming a stable triangular support structure between the connecting rod assembly 3 and the display screen 2. The sliding cooperation between the slider 24 and the slide rail 21 provides buffering and guidance for the rotation of the display screen 2, preventing jamming during unfolding. The linkage structure of the main rod 31 and the secondary rod 32 makes the unfolding trajectory of the display screen 2 controllable, effortless to operate, and stable in posture, preventing structural damage caused by uneven manual unfolding force. At the same time, the double limiting structure greatly improves the stability of the display screen 2 after unfolding, avoiding shaking or angle deviation caused by vehicle vibration. The supporting effect of the connecting rod assembly 3 ensures that the display screen 2 is evenly stressed and its force is distributed. The pressure of its own weight on the rotating connection point extends the service life of the device. When the auxiliary rod 32 drives the limiting block 34 to slide within the limiting groove 33 of the main rod 31, the locking block 36 is compressed by the side wall of the limiting groove 33 to press the spring 35. When it slides to the position of the slot 37, the spring 35 resets and pushes the locking block 36 into the slot 37, realizing the locking and fixing of the main rod 31 and the auxiliary rod 32. When folding is required, the external force pushes the display screen 2 to make the locking block 36 compress the spring 35 again and disengage from the slot 37, releasing the fixation. The slide rail frame 21 has symmetrical dovetail grooves 22 on the inner side. The protrusions on both sides of the slider 24 adopt a dovetail structure that matches the dovetail groove 22. The two form a tenon-and-mortise sliding fit. This structure allows the slider 24 to slide only along the length direction of the dovetail groove 22 within the slide rail frame 21.Unable to disengage perpendicular to the sliding direction, the slider 24 is radially limited. Several ball bearings 25 are positioned between the rolling groove 23 on the sidewall of the dovetail groove 22 and the limiting groove of the slider 24 protrusion. When the slider 24 slides within the slide rail 21, the ball bearings 25 roll between the rolling groove 23 and the limiting groove, converting the sliding friction between the slider 24 and the slide rail 21 into rolling friction, reducing frictional resistance. The positioning and fixing components use a magnetic attraction method. Symmetrically fixed magnetic blocks 26 on the inner side of the slide rail 21 form a magnetic attraction connection with the magnetic sheet at the bottom of the slider 24. During the unfolding or retraction of the display screen 2, when the slider 24 slides to a specific position, such as the unfolding limit or the initial retraction position, the magnetic blocks 26 and the magnetic sheet are magnetically attracted to assist in positioning the slider 24. When the external force exceeds the magnetic force, the two can separate without affecting the component's movement.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shockproof, fixed vehicle-mounted display, characterized in that, include: Ceiling housing (1), a fixing frame (11) is fixedly provided on the back of the outer side of the ceiling housing (1); The display screen (2) is rotatably mounted inside the ceiling shell (1). A slide rail frame (21) is fixedly mounted on the back of the outer side of the display screen (2). A slider (24) is slidably mounted on the inner side of the slide rail frame (21). The linkage assembly (3) is located on the outside of the ceiling shell (1) and the display screen (2), and is movably connected to the fixing frame (11) and the slider (24) to support the display screen (2) after it is stably unfolded. The ceiling cover (1) has a storage groove at the bottom, and a display screen (2) is slidably mounted inside the storage groove. A positioning and fixing component is provided between the slide rail frame (21) and the slider (24). The connecting rod assembly (3) includes a main rod (31) and a secondary rod (32). The main rod (31) is rotatably connected to the fixing frame (11) and the secondary rod (32) is rotatably connected to the slider (24). A limiting block (34) is fixedly mounted at the end of the secondary rod (32). A limiting groove (33) is provided on the outside of the main rod (31). The secondary rod (32) and the limiting block (34) are slidably mounted inside the limiting groove (33). The limiting groove (33) limits the sliding of the limiting block (34). A snap-fit ​​component is provided between the limiting block (34) and the main rod (31).

2. The shockproof fixed vehicle-mounted display according to claim 1, characterized in that: The snap-fit ​​assembly includes a spring (35), a limiting block (34) is fixedly disposed inside the limiting block (34), a snap-fit ​​block (36) is fixedly disposed at the end of the spring (35), the snap-fit ​​block (36) is slidably disposed inside the limiting block (34), a snap-fit ​​groove (37) is opened on the outer side of the main rod (31), and the snap-fit ​​block (36) is slidably snap-fitted inside the snap-fit ​​groove (37).

3. The shockproof fixed vehicle-mounted display according to claim 1, characterized in that: The slide rail frame (21) has symmetrical dovetail grooves (22) on its inner side, and the slider (24) has symmetrical protrusions fixed on both sides. The dovetail grooves (22) and protrusions are designed as dovetail structures.

4. The shockproof fixed vehicle-mounted display according to claim 3, characterized in that: The side wall of the dovetail groove (22) is provided with a rolling groove (23), and a limiting groove is provided on the outer side of the protrusion. A number of balls (25) are provided between the rolling groove (23) and the limiting groove.

5. The shockproof fixed vehicle-mounted display according to claim 1, characterized in that: The positioning and fixing component includes a magnetic block (26), which is symmetrically fixed inside the slide rail frame (21). A magnetic sheet is fixed at the bottom of the slider (24), and the magnetic sheet and the magnetic block (26) are magnetically attracted to each other.

6. The shockproof fixed vehicle-mounted display according to claim 1, characterized in that: The extension lengths of the main rod (31) and the auxiliary rod (32) are adapted to the length of the display screen (2) after it is rotated and opened.

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