An adjustable in-vehicle rear-seat entertainment device

Abstract

This invention relates to the field of in-vehicle adjustable entertainment equipment technology, specifically disclosing an adjustable in-vehicle rear-seat entertainment device, comprising: a base, an adjustment device, an audio entertainment device, a universal ball joint, and a display screen elastic gripper. The base is sleeved on the two headrest rods of the vehicle seat; the adjustment device is located on the front side of the base; the audio entertainment device is located on the moving end of the front side of the adjustment device, and pulling the audio entertainment device can cooperate with the adjustment device to limit the longitudinal or lateral movement of the audio entertainment device, and the adjustment device can provide the opening and closing motion source signal for the audio entertainment device; the universal ball joint is located on the front side of the audio entertainment device; the display screen elastic gripper is located on the moving end of the universal ball joint; through the coordinated cooperation of various functional mechanisms, multi-dimensional flexible adjustment of the display terminal is realized, taking into account both structural reliability and ease of operation under complex in-vehicle conditions, while realizing coordinated control of the audio entertainment components and adjustment actions, which can better adapt to the diverse entertainment needs of the rear seats of vehicles.

Description

Technical Field

[0001] This invention relates to the field of in-vehicle adjustable entertainment equipment technology, specifically an adjustable in-vehicle rear seat entertainment device. Background Technology

[0002] With the continuous upgrading of the demand for passenger comfort in automobiles, in-vehicle rear seat entertainment devices have become a feature to enhance the rear passenger experience. Currently, most mainstream in-vehicle rear seat entertainment devices on the market adopt fixed installation structures or simple clamping brackets, which have many defects in actual use under in-vehicle conditions. Existing devices have limited adjustment dimensions, mostly only capable of fine-tuning the angle in one direction. They cannot accommodate full-dimensional adjustments of the display terminal in terms of vertical forward / backward, horizontal left / right, and multiple viewing angles, making it difficult to adapt to the personalized viewing needs of rear passengers of different heights and sitting postures, thus limiting their application scenarios. At the same time, the locking structure of existing devices is not reliable enough, and most of them use simple buckle locking, which is prone to loosening, abnormal noise, or even mis-locking under driving vibration and bumpy conditions, posing driving safety hazards. Moreover, the unlocking and locking operations are cumbersome.

[0003] In addition, the existing devices have low integration of audio and entertainment functions, with the display and audio components set up separately, making it impossible to achieve adjustment linkage. The audio components need to be turned on manually, and the operation process is cumbersome and cannot meet the needs of convenient and immersive entertainment in the in-vehicle scenario. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable in-vehicle rear-seat entertainment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an adjustable in-vehicle rear-seat entertainment device, characterized in that it comprises: a base, an adjustment device, an audio-visual entertainment device, a universal ball joint, and a display screen elastic gripper; the base is sleeved on two headrest rods of the vehicle seat; the adjustment device is disposed on the front side of the base; the audio-visual entertainment device is disposed on the moving end of the front side of the adjustment device, and pulling the audio-visual entertainment device can cooperate with the adjustment device to limit the longitudinal or lateral movement of the audio-visual entertainment device, and the adjustment device can provide a power source signal for opening and closing the audio-visual entertainment device; the universal ball joint is disposed on the front side of the audio-visual entertainment device; the display screen elastic gripper is disposed on the moving end of the universal ball joint, and the display screen elastic gripper can be adjusted by multi-directional rotation through the universal ball joint.

[0006] Preferably, the adjustment device includes: a support plate, a concave long plate, a limiting component, a moving component, a driving component, and a locking component; the support plate is disposed on the front side of the base; the concave long plate is disposed on the top surface of the support plate; the limiting component is disposed on the front side of the support plate; the moving component is embedded in the limiting component, and the moving component can deform longitudinally or move laterally within the limiting component; the driving component is disposed on the top surface of the limiting component; the locking component is disposed on the inner wall surface of the concave long plate, the locking component contacts and locks the moving component, the driving component can drive the front end of the locking component to move to a limited position, and separates from the moving component to cancel the locking, thereby adjusting the longitudinal deformation or lateral displacement state of the moving component, and then locking the adjusted moving component through the locking component, integrating the functions of bearing, guiding, moving, driving, and locking into one, realizing the dual-dimensional adjustment of the longitudinal deformation and lateral displacement of the display terminal.

[0007] Preferably, the limiting component includes: a limiting hollow long block, a single-opening rectangular block, a first return spring, a trapezoidal flat block, and a pressure sensor; the limiting hollow long block is disposed on the front side of the support plate, and symmetrical limiting grooves are formed on both the upper and lower surfaces of the inner wall of the limiting hollow long block, with a through rectangular groove formed at the center of the bottom limiting groove; the single-opening rectangular block is disposed at the center of the bottom surface of the limiting hollow long block, and the inner cavity of the single-opening rectangular block extends into the rectangular groove; one end of the first return spring is disposed on the bottom surface inside the single-opening rectangular block; the trapezoidal flat block is disposed at the other end of the first return spring, the trapezoidal flat block is embedded in the rectangular groove, and the trapezoidal flat block can be limited to move along the inner wall of the rectangular groove; the pressure sensor is embedded in the top surface of the trapezoidal flat block. Through the limiting hollow long block structure with double symmetrical limiting grooves, guidance and limiting constraints are provided for the moving component, avoiding jamming and swaying problems during the adjustment process.

[0008] Preferably, the moving component includes: a guide moving shaft, arc-shaped teeth, an adjusting moving rod, a limiting collar, and a positioning seat; there are two guide moving shafts, symmetrically embedded between the two ends of the two limiting grooves; there are two arc-shaped teeth, symmetrically arranged on the outer walls of the two guide moving shafts; there are two adjusting moving rods, one end of which is symmetrically arranged on the outer walls of the two guide moving shafts, both adjusting moving rods are embedded in the limiting grooves, and the two adjusting moving rods can be laterally limited to move along the inner walls of the limiting grooves via the two guide moving shafts; there are two limiting collars, symmetrically arranged at the other ends of the two adjusting moving rods; the positioning seat is rotatably embedded in the two limiting collars. Through the symmetrical structure of the two guide moving shafts and the two adjusting moving rods, dual-degree-of-freedom adjustment of lateral sliding and longitudinal angular deformation is achieved, which can simultaneously adapt to the lateral fine-tuning and longitudinal displacement adjustment of the display terminal.

[0009] Preferably, pulling the positioning seat can cause the two adjusting rods to deform longitudinally in a symmetrical angular shape. By adjusting the positioning seat to cause the two adjusting rods to deform in a symmetrical angular shape, the linear pulling force of the passenger is converted into the longitudinal forward and backward displacement of the display terminal.

[0010] Preferably, the driving assembly includes: a rotating rod, a self-locking knob, and an eccentric cam; the rotating rod is rotatably mounted on the top surface of the limiting hollow block via two bearing seats; the self-locking knob is mounted on the outer wall of one of the bearing seats, and the output end of the self-locking knob is fixedly connected to the right end of the rotating rod; the eccentric end of the eccentric cam is sleeved on the center of the outer wall of the self-locking knob, and the rotational motion of the knob is converted into the linear sliding motion of the locking assembly through the rotating rod supported by the double bearing seats in conjunction with the rotary drive structure of the eccentric cam.

[0011] Preferably, the self-locking knob can limit and fix the rotating rod and the eccentric cam by rotating in one direction. Through the one-way self-locking function of the self-locking knob, the circumferential position of the rotating rod and the eccentric cam can be stably limited and fixed without the need for an additional locking structure.

[0012] Preferably, the locking assembly includes: a second return spring, a locking rack, and a pushing plate. One end of the second return spring is disposed on the inner wall surface of the concave long plate; the locking rack is disposed on the other end of the second return spring, and the locking rack contacts and engages with two arc-shaped teeth. The locking rack can move along the inner wall of the concave long plate with a limited position; the pushing plate is disposed on the top surface of the locking rack. Through the engagement and locking structure of the second return spring and the locking rack, a stable preload and automatic reset capability are provided for the locking action. Under normal conditions, a stable engagement and locking state can be maintained, and the unlocking and reset actions are smooth and without impact.

[0013] Preferably, turning the self-locking knob drives the rotating rod to drive the eccentric cam to rotate, and contacts the compression and pushing plate to move backward to cancel the locking rack and the two arc-shaped teeth to lock and fix. Pulling the positioning seat causes the two adjusting moving rods to deform longitudinally into an angle. Turning the self-locking knob again can make the locking rack reset by the elastic force of the second reset spring, thereby locking and fixing the two arc-shaped teeth that are currently deformed into an angle. Stable engagement and locking can be achieved through any longitudinal deformation state and any lateral position of the moving component, which can adapt to the adjustment and locking requirements of the entire stroke of the display terminal.

[0014] Preferably, when the two adjusting moving rods are deformed into an angular shape, the two guiding moving shafts synchronously approach each other and reduce their distance. The two guiding moving shafts can move laterally along the two limiting grooves. Through the linkage design of adjusting the longitudinal deformation of the moving rods and the lateral movement of the guiding moving shafts, the synchronous linkage of the longitudinal forward and backward adjustment and the lateral left and right fine adjustment of the display terminal is realized.

[0015] Preferably, when the two guide shafts approach each other at the minimum distance and make contact, and simultaneously contact and squeeze the trapezoidal flat block, the trigger design of squeezing the trapezoidal flat block at the minimum stroke position of the guide shafts serves as the sole trigger condition for the audio-visual device.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This device achieves longitudinal forward and backward displacement adjustment through the symmetrical angular deformation of the dual adjusting rods, and achieves lateral left and right position fine adjustment by sliding the guide moving shaft along the limiting groove. Combined with the multi-directional rotation of the universal ball joint, it can complete multi-view angle adjustment such as pitch, yaw, and roll, adapting to the personalized viewing needs of rear passengers of different heights and sitting positions. At the same time, the device adopts a linkage locking structure with a self-locking knob, eccentric cam, locking rack and pinion, and arc-shaped teeth. The second return spring provides a stable engagement preload, which can maintain a reliable engagement and locking state under normal conditions, reducing the problems of loosening, abnormal noise, and mis-locking under driving vibration and bumpy conditions. The one-way self-locking function of the self-locking knob can stably limit the adjusted position.

[0017] 2. This device realizes the linkage control of adjustment action and audio-visual function. When the guide moving shaft moves to the minimum stroke position, it will trigger the pressure sensor and link control to unlock the automatic latch, so that the speaker will automatically unfold under the action of gravity. Passengers do not need to manually operate the audio components, simplifying the entertainment process in the car scenario. In addition, the audio-visual device can adjust its position synchronously with the display terminal, avoiding the problem of audio and video separation.

[0018] 3. The base of this device adopts the headrest rod sleeve installation method, which does not require modification of the vehicle body structure. The double symmetrical limiting groove of the limiting component provides full-stroke guidance and limiting constraint for the moving component, reducing the problems of jamming and swaying during the adjustment process. The speaker adopts a sunken storage structure, which does not occupy extra space in the vehicle when stored. When unfolded, the speaker moves down with the rectangular moving rod, which is closer to the rear passengers and helps to improve the audio entertainment experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the front-end split structure of the present invention; Figure 3 This is a schematic diagram of the bottom split structure of the adjustment device of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the limiting hollow block within the limiting component of the present invention; Figure 5 This is a schematic diagram of the middle section of the limiting hollow block in the limiting component of the present invention; Figure 6This is a schematic diagram of the internal structure of the middle section of the limiting hollow block in the limiting component of the present invention; Figure 7 This is a schematic diagram of the structure within a cross-section of the limiting component of the present invention; Figure 8 This is a schematic diagram of the top split structure of the adjustment device of the present invention; Figure 9 This is a schematic diagram of the split structure within a cross section of the audio-visual entertainment device of the present invention; Figure 10 for Figure 9 Enlarged view of point A in the image.

[0020] In the diagram: 1. Base; 2. Adjustment device; 21. Support plate; 22. Concave long plate; 23. Limiting component; 231. Limiting hollow long block; 232. Limiting groove; 233. Rectangular groove; 234. Single-opening rectangular block; 235. First return spring; 236. Trapezoidal flat block; 237. Pressure sensor; 24. Moving component; 241. Guide moving shaft; 242. Arc-shaped teeth; 243. Adjusting moving rod; 244. Limiting collar; 245. Positioning seat; 25. 1. Drive assembly; 251. Rotating rod; 252. Self-locking knob; 253. Eccentric cam; 26. Snap-fit ​​assembly; 261. Second return spring; 262. Snap-lock rack; 263. Push plate; 3. Audio-visual device; 31. Transmission block; 32. Single-opening rectangular box; 33. Moving slot; 34. Rectangular limit ring; 35. Rectangular moving rod; 36. Snap-lock slot; 37. Bearing seat; 38. Speaker; 39. Automatic locking pin; 4. Universal ball joint; 5. Display screen elastic gripper. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-10This invention provides a technical solution for an adjustable in-vehicle rear-seat entertainment device, comprising: a base 1, an adjustment device 2, an audio entertainment device 3, a universal ball joint 4, and a display screen elastic gripper 5; the base 1 is sleeved on the two headrest rods of the vehicle seat, serving as the mounting base for the entire device. During assembly, it is directly sleeved and fixed to the two headrest rods of the front seat of the car, providing a stable mounting reference for the entire device without requiring modification to the vehicle structure; the adjustment device 2 is located on the front side of the base 1; the audio entertainment device 3 is located on the moving end of the front side of the adjustment device 2, and pulling the audio entertainment device... 3 can cooperate with the adjustment device 2 to limit the longitudinal or lateral movement of the audio-visual device 3. The adjustment device 2 can provide the opening and closing power source signal for the audio-visual device 3. The universal ball joint 4 is located on the front side of the audio-visual device 3. The display screen elastic gripper 5 is located on the moving end of the universal ball joint 4. The display screen elastic gripper 5 can be adjusted in multiple directions through the universal ball joint 4. By rotating the ball joint of the universal ball joint 4, the display screen elastic gripper 5 can be driven to complete the tilt, yaw and roll angle adjustment in multiple directions to adapt to the usage needs of rear passengers with different sitting postures and different viewing angles.

[0023] As a preferred option, further, such as Figure 3 and Figure 8As shown, the adjustment device 2 includes: a support plate 21, a concave long plate 22, a limiting component 23, a moving component 24, a driving component 25, and a locking component 26; the support plate 21 is disposed on the front side of the base 1; the concave long plate 22 is disposed on the top surface of the support plate 21; the limiting component 23 is disposed on the front side of the support plate 21; the moving component 24 is embedded in the limiting component 23, and the moving component 24 can deform longitudinally or move laterally within the limiting component 23; the driving component 25 is disposed on the top surface of the limiting component 23; the locking component 26 is disposed on the inner wall surface of the concave long plate 22, and the locking component 26 contacts and locks the moving component 24. The driving component 25 can drive the front end of the locking component 26 to move and separate from the moving component 24 to cancel the locking, thereby adjusting the longitudinal deformation or lateral displacement state of the moving component 24, and then locking the adjusted moving component 24 is locked by the locking component 26; the moving component 24 is embedded in the base 1. Installed within the limiting cavity of the limiting component 23, its front moving end is fixedly connected to the audio-visual device 3. In the unlocked state, under the action of external force, it can complete the lateral left and right limiting movement along the constraint trajectory of the limiting component 23, or generate longitudinal deformation to adapt to the longitudinal forward and backward displacement of the audio-visual device 3, thereby realizing the position adjustment of the display terminal. The concave long plate 22 provides a sliding guide for the locking component 26, avoiding swaying and jamming during the locking action, and ensuring the stability of the engagement and locking. The limiting component 23 provides a limiting constraint for the moving component 24, ensuring the smoothness and adjustment accuracy of the lateral movement and longitudinal deformation. Through the cooperation of the driving component 25, the locking component 26 and the moving component 24, one-button unlocking and locking in the adjustment state are realized. At the same time, locking can be realized after the adjustment is completed, avoiding problems such as position loosening and abnormal noise caused by vibration during driving. It can also be compatible with the flexible adjustment of the display terminal in both longitudinal and lateral dimensions.

[0024] As a preferred option, further, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the limiting component 23 includes: a limiting hollow elongated block 231, a single-opening rectangular block 234, a first return spring 235, a trapezoidal flat block 236, and a pressure sensor 237; the limiting hollow elongated block 231 is disposed on the front side of the support plate 21, and symmetrical limiting grooves 232 are opened on both the upper and lower surfaces of the inner wall of the limiting hollow elongated block 231, and a through rectangular groove 233 is opened in the center of the bottom limiting groove 232; the single-opening rectangular block 234 is disposed at the center of the bottom surface of the limiting hollow elongated block 231, and the inner cavity of the single-opening rectangular block 234 extends into the rectangular groove 233; the first return spring 235, a trapezoidal flat block 236, and a pressure sensor 237; the limiting hollow elongated block 231 is disposed on the front side of the support plate 21, and symmetrical limiting grooves 232 are opened on both the upper and lower surfaces of the inner wall of the limiting hollow elongated block 231, and a through rectangular groove 233 is opened in the center of the bottom surface of the limiting hollow elongated block 231 ... One end of the first return spring 235 is disposed on the bottom surface of the single-opening rectangular block 234; the trapezoidal flat block 236 is disposed on the other end of the first return spring 235, the trapezoidal flat block 236 is embedded in the rectangular groove 233, and the trapezoidal flat block 236 can be limited to move along the inner wall of the rectangular groove 233. The top two ends of the trapezoidal flat block 236 are inclined surfaces, so that the two guide moving shafts 241 can better contact and squeeze the pressure sensor 237 in the top surface of the trapezoidal flat block 236; the pressure sensor 237 is embedded in the top surface of the trapezoidal flat block 236, and the pressure sensor 237 is used to provide a signal source for the automatic latch 39.

[0025] As a preferred option, further, such as Figure 3As shown, the moving assembly 24 includes: guide moving shafts 241, arc-shaped teeth 242, adjusting moving rods 243, limiting collars 244, and positioning seats 245; there are two guide moving shafts 241, which are symmetrically embedded between the two ends of two limiting grooves 232; there are two arc-shaped teeth 242, which are symmetrically arranged on the outer walls of the two guide moving shafts 241; there are two adjusting moving rods 243, one end of which is symmetrically arranged on the outer wall of the two guide moving shafts 241, and both adjusting moving rods 243 are embedded in the limiting grooves 232, and the two adjusting moving rods 243 can be laterally limited to move along the inner wall of the limiting grooves 232 through the two guide moving shafts 241; there are two limiting collars 244, which are symmetrically arranged on the other end of the two adjusting moving rods 243; the positioning seat 245 is rotatably embedded in the two limiting collars 244; pulling the positioning seat 245 can drive the two adjusting moving rods 243. The rod 243 undergoes a symmetrical angular longitudinal deformation. When the two guide shafts 241 of the moving assembly 24 move towards each other to the minimum distance and abut against each other, the outer walls of the two guide shafts 241 synchronously press against the top two ends of the trapezoidal flat block 236, overcoming the elastic force of the first reset spring 235 and pushing the trapezoidal flat block 236 to move downward along the rectangular groove 233 to a limited position. The sensing surface of the pressure sensor 237 is triggered by the tight contact between the outer wall of the guide shaft 241 and the pressure sensor 237. It then outputs a control signal to the automatic latch 39 electrically connected to it, realizing the linkage unfolding control of the speaker 38 in the audio-visual device 3. When the two guide shafts 241 move back to their original positions and reset, the pressure on the trapezoidal flat block 236 disappears, the first reset spring 235 rebounds and resets, pushing the trapezoidal flat block 236 upward along the rectangular groove 233 to the upper limit position. The triggering state of the pressure sensor 237 is released, and the output of the control signal stops, completing one complete triggering and resetting cycle.

[0026] As a preferred option, further, such as Figure 8As shown, the drive assembly 25 includes: a rotating rod 251, a self-locking knob 252, and an eccentric cam 253; the rotating rod 251 is rotatably mounted on the top surface of the limiting hollow block 231 via two bearing seats; the self-locking knob 252 is mounted on the outer wall of one bearing seat, and the output end of the self-locking knob 252 is fixedly connected to the right end of the rotating rod 251; the eccentric end of the eccentric cam 253 is sleeved on the center of the outer wall of the self-locking knob 252; the self-locking knob 252 can limit and fix the rotating rod 251 and the eccentric cam 253 by its own unidirectional rotation; the rotating rod 251, supported by a double coaxial bearing seat, is fixedly mounted on the top surface of the limiting hollow block 231 via two bearing seats. 1. It provides a stable rotational reference for the eccentric cam 253, avoiding swaying and jamming during rotation, and ensuring the accuracy and smoothness of the pushing action; through the self-locking knob 252 with built-in one-way self-locking mechanism, the unlocking position and locking position are stably limited and fixed, solving the problems of knob loosening, mechanism mis-locking and locking failure caused by driving vibration and bumps under complex vehicle working conditions; through the rotary pushing drive of the eccentric cam 253, the rotational motion of the knob is converted into the linear sliding motion of the locking component 26, which can match the unlocking and locking stroke requirements of the locking component 26.

[0027] As a preferred option, further, such as Figure 3 and Figure 8As shown, the locking assembly 26 includes: a second return spring 261, a locking rack 262, and a pushing plate 263; one end of the second return spring 261 is disposed on the inner wall surface of the concave long plate 22; the locking rack 262 is disposed on the other end of the second return spring 261, and the locking rack 262 contacts and engages with two arc-shaped teeth 242, and the locking rack 262 can move along the inner wall of the concave long plate 22 with a limited position; the pushing plate 263 is disposed on the top surface of the locking rack 262; turning the self-locking knob 252 drives the rotating rod 251 to drive the bias... The cam 253 rotates and contacts the pressing and pushing plate 263, which moves backward to limit the movement and cancel the locking rack 262's engagement with the two arc-shaped teeth 242. The positioning seat 245 is pulled, causing the two adjusting rods 243 to longitudinally deform into an angle. Rotating the self-locking knob 252 allows the locking rack 262 to be reset by the second return spring 261, thus engaging and fixing the two arc-shaped teeth 242. When the two adjusting rods 243 are deformed into an angle, the two guide shafts 241 synchronously approach each other and reduce their distance. Two guide shafts 241 can move laterally along two limiting grooves 232; when the two guide shafts 241 approach each other at the minimum distance and contact each other, they simultaneously contact and compress the trapezoidal flat block 236; the pre-compressed second return spring 261 provides a stable return spring force and engagement preload force to the locking rack 262, which, together with the sliding guide of the concave long plate 22, ensures the smoothness of the locking rack 262's movement and the reliability of the engagement lock, avoiding the problems of locking loosening and skipping teeth under vehicle vibration conditions; through a single locking... The design of the rack 262 engaging and locking with the two arc-shaped teeth 242 enables the synchronous locking of the dual guide moving shafts 241. Regardless of the angular deformation state of the two adjusting moving rods 243 or the position of the two guide moving shafts 241 in the lateral stroke, engagement and locking can be achieved, adapting to the adjustment and locking requirements of the entire stroke of the display terminal. Through the linkage between the push plate 263 and the eccentric cam 253, the rotary drive action is converted into the linear unlocking action of the locking component 26, realizing the unlocking and automatic reset locking of the mechanism.

[0028] As a preferred option, further, such as Figure 9 and Figure 10As shown, the audio-visual entertainment device 3 includes: a transmission block 31, a single-opening rectangular box 32, a moving groove 33, a rectangular limiting ring 34, a rectangular moving rod 35, a locking groove 36, a bearing seat 37, a speaker 38, and an automatic locking pin 39; the transmission block 31 is located on the front side of the positioning seat 245; the single-opening rectangular box 32 is located on the front side of the transmission block 31, and two moving grooves 33 are provided on both sides of the inner wall of the single-opening rectangular box 32; two rectangular limiting rings 34 are symmetrically arranged in the bottom ends of the two moving grooves 33; the rectangular moving rod... Two rods 35 are symmetrically fitted into two rectangular limiting rings 34. A through locking groove 36 is provided at the bottom end of one side of each rectangular moving rod 35. A support base 37 is located at the bottom end of the two rectangular moving rods 35. A speaker 38 is located on the top surface of the support base 37. An automatic locking pin 39 is embedded in the right side of the outer wall of a single-opening rectangular box 32, and its output end is inserted into the locking groove 36, fixing the top surface component of the support base 37. The automatic locking pin 39 is electrically connected to a pressure sensor. The audio-visual device 3 is realized through a transmission block 31. The rigid connection between the moving end of the adjustment device 2 ensures synchronous position adjustment of the display terminal and the speaker 38, avoiding the defects of audio-visual separation. The cooperation between the built-in moving slot 33 and the rectangular limiting ring 34 of the single-opening rectangular box 32 provides axial sliding guidance and limiting constraint for the rectangular moving rod 35, avoiding jamming and swaying during sliding, and structurally eliminating the risk of the speaker 38 falling out during unfolding. The cooperation between the automatic locking pin 39 and the locking slot 36 achieves stable locking of the speaker 38 in its retracted state, preventing damage during driving. During the process, issues such as abnormal noises and accidental slippage caused by vibration and bumps are addressed. Through the electrical connection and linkage design between the automatic locking pin 39 and the pressure sensor 237, the speaker 38 can be automatically deployed according to the maximum travel adjustment of the display terminal, without the need for additional manual operation by passengers. The overall structure adopts a sunken storage and gravity-driven automatic deployment design. When stored, the structure is compact and does not occupy the interior space. When deployed, the speaker 38 can be placed closer to the rear passengers, enhancing the audio entertainment experience. At the same time, the purely mechanical locking structure combined with the electronic control linkage trigger is adapted to the usage scenarios of in-vehicle rear-seat entertainment.

[0029] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, and the specific work is as follows: The display screen to be used is placed in the display screen elastic clamp 5, and the display screen is stably clamped and fixed by the display screen elastic clamp 5; Turning the self-locking knob 252 drives the rotating rod 251 to rotate synchronously, which in turn drives the eccentric cam 253 to rotate. The flange of the eccentric cam 253 abuts against the push plate 263 and pushes the push plate 263 backward, causing the locking rack 262 to move backward synchronously, releasing the engagement between the locking rack 262 and the two arc-shaped teeth 242, providing adjustment space for the adjusting rod 243. During this process, the locking rack 262 synchronously compresses the second return spring 261. Pull the display screen forward to the target vertical position. The display screen drives the two adjusting moving rods 243 to undergo symmetrical angular deformation through the positioning seat 245, forming a V-shaped support structure, thereby realizing the vertical front and rear position adjustment of the display screen. During the vertical adjustment of the display screen, the two guide moving shafts 241 move towards each other synchronously with the deformation of the adjusting moving rods 243, and can also slide laterally along the limiting groove 232 on the inner wall of the limiting hollow long block 231, thereby simultaneously completing the horizontal left and right position fine adjustment of the display screen. After the horizontal and vertical positions of the display screen are adjusted to the correct positions, turn the self-locking knob 252 to drive the eccentric cam 253 and release the abutment and push against the push plate 263; the second return spring 261 rebounds and pushes the locking rack 262 forward to reset, re-engages with the two arc-shaped teeth 242 at the current position, and, together with the one-way self-locking function of the self-locking knob 252, achieves stable locking of the adjusted position; When the two guide shafts 241 move towards each other to the minimum distance and abut against each other, the guide shafts 241 simultaneously press the top two ends of the trapezoidal flat block 236, causing the trapezoidal flat block 236 to slide down along the rectangular groove 233, thereby pressing the pressure sensor 237 embedded in the trapezoidal flat block 236; after the pressure sensor 237 is triggered, it outputs a control signal to the automatic locking pin 39 electrically connected to it, and the locking end of the automatic locking pin 39 retracts and resets, releasing the locking limit with the locking groove 36 on the rectangular moving rod 35; under the action of gravity, the bearing seat 37 and the speaker 38 fixed on its top surface slide down along the axial direction of the rectangular limiting ring 34 with the rectangular moving rod 35, realizing the automatic unfolding of the speaker.

[0030] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable in-vehicle rear-seat entertainment device, characterized in that, include: The base (1) is sleeved on the two headrest rods of the seat; Adjustment device (2) is provided on the front side of the base (1); The audio entertainment device (3) is located at the front moving end of the adjustment device (2). Pulling the audio entertainment device (3) can cooperate with the adjustment device (2) to limit the longitudinal or lateral movement of the audio entertainment device (3). The adjustment device (2) can provide the opening and closing motion source signal for the audio entertainment device (3). The universal ball joint (4) is located on the front side of the audio-visual device (3); The display screen elastic gripper (5) is located at the moving end of the universal ball head (4), and the display screen elastic gripper (5) can be rotated and adjusted in multiple directions through the universal ball head (4); The regulating device (2) includes: A support plate (21) is disposed on the front side of the base (1); A concave elongated plate (22) is disposed on the top surface of the support plate (21); A limiting component (23) is disposed on the front side of the support plate (21); The movable component (24) is embedded in the limiting component (23), and the movable component (24) is capable of longitudinal deformation or lateral limiting movement within the limiting component (23); A drive component (25) is disposed on the top surface of the limiting component (23); The snap-fit ​​component (26) is disposed on the inner wall surface of the concave long plate (22). The snap-fit ​​component (26) contacts and snaps into the moving component (24). The driving component (25) can drive the front end of the snap-fit ​​component (26) to move to a limited position and separate from the moving component (24) to cancel the snap-fit ​​fixation, thereby adjusting the longitudinal deformation or lateral displacement state of the moving component (24). Then, the snap-fit ​​component (26) is used to snap into and fix the adjusted moving component (24). The limiting component (23) includes: A limiting hollow long block (231) is set on the front side of the support plate (21). The inner wall of the limiting hollow long block (231) is provided with symmetrical limiting grooves (232) on both the upper and lower sides. A through rectangular groove (233) is provided in the center of the bottom limiting groove (232). A single-opening rectangular block (234) is disposed at the center of the bottom surface of the limiting hollow long block (231), and the inner cavity of the single-opening rectangular block (234) extends into the rectangular groove (233); The first return spring (235) has one end disposed on the bottom surface inside the single-opening rectangular block (234); A trapezoidal flat block (236) is disposed at the other end of the first reset spring (235). The trapezoidal flat block (236) is embedded in the rectangular groove (233), and the trapezoidal flat block (236) can be limited to move along the inner wall of the rectangular groove (233). A pressure sensor (237) is embedded in the top surface of the trapezoidal flat block (236); The moving component (24) includes: There are two guide shafts (241), which are symmetrically embedded between the two ends of the two limiting grooves (232); Two arc-shaped teeth (242) are symmetrically arranged on the outer walls of the two guide moving shafts (241); There are two adjusting moving rods (243), one end of which is symmetrically arranged on the outer wall of the two guide moving shafts (241). Both adjusting moving rods (243) are embedded in the limiting groove (232), and the two adjusting moving rods (243) can be laterally limited to move along the inner wall of the limiting groove (232) through the two guide moving shafts (241). Two limiting collars (244) are symmetrically arranged at the other end of the two adjusting moving rods (243); The positioning seat (245) is rotatably embedded in the two limiting collars (244); When the two adjusting moving rods (243) are deformed into an angle, the two guiding moving shafts (241) move closer to each other synchronously and reduce the distance. The two guiding moving shafts (241) can move laterally along the two limiting grooves (232). When the two guiding moving shafts (241) move closer to each other at the minimum distance and contact each other, they contact and squeeze the trapezoidal flat block (236) synchronously.

2. The adjustable in-vehicle rear-seat entertainment device according to claim 1, characterized in that: Pulling the positioning seat (245) can cause the two adjusting moving rods (243) to undergo symmetrical angular longitudinal deformation.

3. An adjustable in-vehicle rear-seat entertainment device according to claim 2, characterized in that: The driving component (25) includes: The rotating rod (251) is rotatably mounted on the top surface of the limiting hollow block (231) via two bearing seats; A self-locking knob (252) is disposed on the outer wall of one of the bearing seats, and the output end of the self-locking knob (252) is fixedly connected to the right end of the rotating rod (251); An eccentric cam (253) has its eccentric end fitted onto the center of the outer wall of the self-locking knob (252).

4. An adjustable in-vehicle rear-seat entertainment device according to claim 3, characterized in that: The self-locking knob (252) can limit and fix the rotating rod (251) and the eccentric cam (253) by rotating in one direction.

5. An adjustable in-vehicle rear-seat entertainment device according to claim 4, characterized in that: The snap-fit ​​assembly (26) includes: The second return spring (261) has one end disposed on the inner wall surface of the concave long plate (22); A locking rack (262) is disposed at the other end of the second return spring (261). The locking rack (262) is engaged with two arc-shaped teeth (242). The locking rack (262) can be limited to move along the inner wall of the concave long plate (22). A push plate (263) is disposed on the top surface of the locking rack (262).

6. An adjustable in-vehicle rear-seat entertainment device according to claim 5, characterized in that: Turning the self-locking knob (252) drives the rotating rod (251) to drive the eccentric cam (253) to rotate, and contact the pressing and pushing plate (263) to limit the movement backward, thus canceling the locking rack (262) from engaging and fixing with the two arc-shaped teeth (242). Pulling the positioning seat (245) causes the two adjusting moving rods (243) to deform longitudinally into an angle. Turning the self-locking knob (252) again allows the locking rack (262) to be reset by the elastic force of the second reset spring (261), thereby engaging and fixing the two arc-shaped teeth (242) that are currently deformed into an angle.

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