CN203496795U - Impact Buffer Structure of Video Devices Used in Cars - Google Patents

Abstract

A collision buffer structure of a vehicle video device comprises a frame and a video device combined with a display screen; and a crumple device is arranged between the frame and a headrest part to provide an elastic prestress, and when the video device is impacted by external force, the crumple device is allowed to reduce the length, so that the video device is retracted into a buffer safety space defined by the headrest part, and the use safety of the video device is improved.

Description

Impact Buffer Structure of Video Devices Used in Cars

technical field

The utility model relates to an impact buffer structure of a video device for a vehicle, in particular to a structure that allows the video device to move within a collapsed space or a stroke defined by a headrest when it is impacted by an external force.

Background technique

It is a known technology to install a monitor or a screen on the headrest of a car to provide viewing, entertainment, information display and other functions of a car video device. For example, US6250967B2 "MOBILE VIDEO DEVICE" and Chinese Taiwan No. 88211202 "Adjustable Headrest TV Fixed Structure" patent case etc. provide typical embodiments.

Known technologies have also disclosed a structure that allows video devices to have adjustable viewing angles. For example, the Chinese Taiwan Patent No. 90212364 "Adjusting Structure for TV Headrests" provides a feasible embodiment.

In order to improve the safety of the car video device, reduce the impact or accidents that occur during driving, and cause the video device to cause harm to the occupants, the old law has also disclosed a car video device with anti-collision and collapse functions, for example, Taiwan, China Patent No. 94130799 "Vehicle Video Device with Anti-collision Collapse Safety Function" provides a typical embodiment.

The technology discloses that a stop component is arranged between the display screen and the fixed frame, and several breakage parts are formed on the stop component. When the display screen is impacted by an external force, the breaking part of the contact component will be forced to break, so that the display screen retreats into the fixed frame, so as to reduce the damage of the external force or impact to the display screen.

A problem related to the operation and structural design of the above embodiment is that the video device is installed on the headrest of the car seat, and there is no collapse buffer device between the fixed frame of the video device and the headrest. Therefore, when the external force or the occupants hit the fixed frame or the video device due to an unexpected situation, it is easy to cause injury to the occupants; There have also been female taxi passengers who have been knocked unconscious in a car accident by hitting a video device, which is not what we expected.

Typically, these reference data show the situation in terms of use and structural design in relation to video equipment, display screens, fixed frames and headrests or their associated components. If the redesign considers the structural fit of the video device, the display screen, the fixed frame and the headrest, and the above-mentioned application conditions, making it different from the known technology, it will be able to change its use pattern, and be different from The old method; in essence, it will also increase its use safety and application effect.

If an attempt is made to improve or overcome the problems discussed above, it can be found that the video device or its related combination components must take into account the following issues in terms of structural design and operational technology: 1. Between the video device or the fixed frame and the headrest It is necessary to design a structural type that provides a buffer safety space, and when subjected to external force impact, allow a range of motion for video devices to reduce their hazards to personnel. 2. A collapse buffer device must be designed between the video device or the fixed frame and the headrest to match the range of motion provided by the buffer safety space to absorb or reduce the external impact force.

Contents of the invention

The technical problem to be solved by the utility model is: aiming at the deficiencies of the above-mentioned prior art, provide an impact buffer structure for a video device for a vehicle, when the video device is impacted by an external force, the video device will retreat into a buffer defined by the headrest In the safe space, in order to improve the safety of using the video equipment.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a collision buffer structure of a video communication device for a vehicle, including a combination of a headrest part and a video communication device; the video communication device has a frame and a display screen arranged in the frame It is characterized in that the headrest has an alcove, and a buffer safety space is provided in the alcove; the video device is installed inside the alcove; a crushing device is arranged between the frame and the headrest to provide a pre-force , when the video device is impacted by an external force, the length of the collapse device is allowed to be reduced, so that the video device retreats into the buffer safety space of the headrest.

The alcove of the headrest part is provided with a base plate; the buffer safety space is located between the base plate and the frame of the video device.

The crushing device is arranged in the buffer safety space of the alcove, and pivotally connects the frame of the video device and the base plate of the headrest.

The crushing device includes at least one main body and an auxiliary body corresponding to the main body; the main body is a hollow body; and the main body has a wall, a chamber defined by the wall and an opening of the chamber; the auxiliary body is pivotally connected to the main body opening.

The wall of the main body is formed with a shoulder at the opening of the cavity; the auxiliary body is formed with a groove, pivotally connected to the opening of the main body, and fits the shoulder of the main body; the auxiliary body has a head end, and is inserted into the main body through the opening inside the chamber.

The main body is a cylindrical body; the auxiliary body is a cylindrical body or a cylindrical body; the main body chamber is formed with a convex part.

The main body and the auxiliary body are in a pyramidal structure, respectively defining short sides and long sides; the opening is formed in the area of the short side of the main body; the area of the opening is smaller than the cross-sectional area of the chamber; the wall of the main body is formed with grooves; the Grooves are formed in the region of the short sides of the secondary body.

The main body is arranged on a first surface so that the main body and the first surface are connected to the substrate; and the auxiliary body is arranged on a second surface so that the auxiliary body and the second surface are connected to the frame.

The first surface and the second surface cooperate with the fixer and are respectively locked on the base plate and the frame. Foundation piles are arranged between the first surface and the second surface.

The frame enables the auxiliary body to enter the chamber of the main body; and the wall of the main body generates expansion deformation; and the auxiliary body and the main body generate interference friction resistance, so that the length of the crushing device is reduced.

The frame makes the groove of the auxiliary body pass over the shoulder; and the auxiliary body enters the cavity of the main body to cause expansion and deformation of the wall of the main body; and the auxiliary body and the main body generate interference friction resistance to reduce the length of the crushing device.

The frame allows the auxiliary body to enter the main body cavity, breaking the foundation pile supporting the first surface and the second surface; and, the auxiliary body causes the wall of the main body to expand and deform; and the auxiliary body and the main body generate interference friction resistance, causing the collapse The device reduces length.

The frictional resistance of the interference state between the auxiliary body and the main body is less than an external force.

A safety space is defined between the frame and the display screen; a crushing device is arranged in the safety space.

The crushing device arranged between the display screen and the frame forms a pre-force which is smaller than the pre-force formed by the crushing device arranged between the frame and the head rest.

At least one elastic device is disposed between the frame and the headrest. At least one elastic device is disposed between the first surface and the second surface. At least one elastic device is arranged between the frame and the display screen.

The frame presses the auxiliary body so that the auxiliary body goes over the convex part, and the length of the crushing device is shortened; moreover, the video device retreats into the buffer safety space.

The crushing device includes at least one main body and an auxiliary body corresponding to the main body; the main body and the auxiliary body form a plate-shaped body structure; the main body defines a groove chamber to pivotally form a column on the auxiliary body; the groove chamber of the main body forms There are ribs. The posts and chambers form an interference friction state.

The main body and the auxiliary body are wrapped in a casing.

The crushing device is provided with several grooves; and weak quality parts are formed between adjacent grooves. The crushing device is a columnar body.

The crushing device forms a structure in which several plate-shaped bodies are connected; the area where the plate-shaped bodies are connected forms a structure of weak parts.

The crushing device forms a structure of a plate-shaped body; the plate-shaped body forms a weak part; holes are arranged on the weak part.

The crushing device forms a seesaw structure, one end has a weak part, which is fixed on the base plate of the headrest part, and the other end loads the frame.

The crushing device forms a seesaw structure, with a weak part at one end, fixed on the frame, and a display screen at the other end.

The length of the groove is greater than or equal to 1/2 of the height of the wall.

The head rest is made of foam material, and the covering protrudes from the periphery of the video device.

In this way, when the video device or the frame is impacted by external force, the frame will force the auxiliary body to enter the main cavity, so that the length of the collapse device will be reduced, and the video device will retreat into the buffer safety space to absorb or reduce the external impact force.

The novelty, features, and other purposes and effects of the present utility model will be explained in detail in conjunction with the attached drawings in the following text, so as to become more comprehensible.

Description of drawings

Fig. 1 is a schematic diagram of the combination of the three-dimensional structure of the utility model; the imaginary line part in the figure depicts the structure of the headrest.

Fig. 2 is a schematic exploded view of the structure of the utility model; it shows the configuration of the crushing device between the headrest and the video device.

Fig. 3 is a schematic plan view of the utility model; depicting the buffer safety space of the alcove of the headrest, the structural combination of the crushing device between the substrate and the video device.

Fig. 4 is a schematic diagram of the planar structure of an operation embodiment of the present invention; it shows the movement of the compression device by the video device.

Fig. 5 is an enlarged schematic diagram of the structure of A in Fig. 4; it depicts the interference friction state of the auxiliary body inserted into the main body, and the expansion and deformation of the wall of the main body.

Fig. 6 is a schematic diagram of the planar structure of an operation embodiment of the present invention; it depicts the situation after the auxiliary body enters the main body and the length of the crushing device is reduced.

Fig. 7 is a structural diagram of a modified embodiment of the present utility model; it shows a situation where the frame defines a safe space and a crushing device is arranged between the frame and the display screen.

Fig. 8 is a schematic diagram of another modified embodiment of the present utility model; it shows the coordination of the main body and the auxiliary body in a cylindrical structure.

Fig. 9 is a schematic diagram of a derived embodiment of the present invention; depicting the cooperation of the main body and the auxiliary body in a plate-like structure.

Fig. 10 is a schematic diagram of the combined embodiment of Fig. 9; the phantom line in the figure shows the case where the casing covers the main body and the auxiliary body.

Fig. 11 is a schematic diagram of another modified embodiment of the present utility model; it shows the situation that the crushing device is in a columnar structure.

Fig. 12 is a schematic plan view of the combined structure of Fig. 11; depicting the situation where weak parts are formed between groove parts.

Label description:

10 Headrest 11 Alcove

12 Substrate 13 Buffer safety space

14 Rod body 20 Video device

21 frame 22 display screen

23 Safe Space 30 Crushing Device

30a Groove part 30b Weak quality part

31 Main Body 31a Tank Chamber

31b Rib 32 Auxiliary body

32a column 33 first side

34 Second side 35 Wall

35a Shoulder 35b Slot

36 Chamber 36a Opening

36b Convex 37 Groove

38 Head end 39 Foundation pile

40 Elastic device 50 Fixer

55 Housing.

Detailed ways

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , the impact buffer structure of the video communication device for a vehicle of the present invention includes a combination of a headrest and a video communication device, which are represented by reference numerals 10 and 20 respectively. The headrest portion 10 is made of foam material or the like, and defines an alcove 11 and a base plate 12 disposed inside the alcove 11 . In a feasible embodiment, the base plate 12 is pivotally connected with the rod body 14 to be inserted on the seat, so that the headrest part 10 provides the function of supporting the head of the occupant (not shown in the figure).

FIG. 1 also depicts that the video device 20 is installed inside the alcove 11 of the headrest part 10; Or reduce the situation of people colliding with the video device 20 .

FIG. 1 , FIG. 2 and FIG. 3 depict a buffer safety space 13 in the alcove 11 defined between the video device 20 and the substrate 12 . And, a crushing device 30 is disposed in the buffer safety space 13 of the alcove 11 , and pivotally connects the video device 20 and the headrest part 10 (or the base plate 12 ). The collapse device 30 provides a (elastic) pre-force, which allows the collapse device 30 to shrink in length when the video device 20 is impacted by an external force, allowing the video device 20 to retreat into the buffer safety space 13 to improve the use safety of the video device 20 sex.

In detail, the video device 20 includes a combination of a frame 21 and a display screen 22 ; and, the crush device 30 is disposed between the frame 21 and the base plate 12 of the headrest portion 10 .

In a preferred embodiment, the crushing device 30 includes at least one or several main bodies 31 and auxiliary bodies 32 corresponding to the main bodies 31 . The main body 31 is arranged on the first surface 33 so that the main body 31 and the first surface 33 are connected to the substrate 12 ; the auxiliary body 32 is arranged on the second surface 34 so that the auxiliary body 32 and the second surface 34 are connected to the frame 21 . The figure shows a mode in which the first surface 33 and the second surface 34 cooperate with the fixer 50 (eg, screws, rivets or the like) to be locked on the base plate 12 and the frame 21 respectively.

In a feasible embodiment, a foundation pile 39 is arranged between the first surface 33 and the second surface 34 , and the auxiliary supporting body 31 and the auxiliary body 32 are fixed between the first surface 33 and the second surface 34 .

The figure shows that the main body 31 is in the shape of a hollow cone or trapezoid, and defines short sides and long sides. The main body 31 has a wall 35 , a chamber 36 defined by the wall 35 and a chamber opening 36 a ; the opening 36 a is formed at the position of the short side of the main body 31 . The wall 35 is formed with a shoulder 35a at the chamber opening 36a, so that the area of the opening 36a is smaller than the cross-sectional area of the chamber 36; 31 expansion deformation effect. The length of the groove 35Bb is greater than or equal to (or not less than) 1/2 the height of the wall 35 .

Fig. 2 and Fig. 3 show that the auxiliary body 32 is in the form of a cone or a trapezoid, with short sides and long sides defined. The short side area of the auxiliary body 32 is pivotally connected to the opening 36 on the short side of the main body 31 . Specifically, the short side region of the auxiliary body 32 is formed with a groove 37, which fits the shoulder 35a of the main body 31 or forms an interference state with the main body opening 36a; and makes the head end 38 (or short side) of the auxiliary body 32 from The opening 36 a is inserted into the main body chamber 36 . In a preferred embodiment, the auxiliary body 32 is in the shape of a cylinder or cylinder.

Please refer to FIG. 4, FIG. 5 and FIG. 6, when the video device 20 or the frame 21 is hit by an external force, the frame 21 will force the groove 37 of the auxiliary body 32 to go over the shoulder 35a or force the shoulder 35a to break; The piles 39 supporting the first face 33 and the second face 34 are fractured. Thus, the secondary body 32 enters the main body cavity 36, causing expansion deformation of the wall 35 of the main body 31; for example, the phantom line portion of FIG. 5 or the situation depicted in FIG. Therefore, the auxiliary body 32 and the main body 31 generate interference friction resistance, and the length of the crushing device 30 is shortened, so that the video device 20 retreats into the buffer safety space 13 to absorb or reduce the external impact force. The external impact force refers to the force greater than the interference state between the auxiliary body 32 and the main body 31 .

Please refer to FIG. 7, in a modified embodiment, a crush device 30 is also disposed between the frame 21 and the display screen 22, so that a double buffer is established between the video device 20 and the substrate 12 of the headrest part 10. contraction. Specifically, the frame 21 defines a safety space 23 for installing the crushing device 30 . When the display screen 22 is impacted by an external force, the display screen 22 will press the collapse device 30 in the safety space 23 to reduce its length, allowing the display screen 22 to retreat into the safety space 13 or the frame 21 to absorb or reduce the external impact force . At the same time, the external impact force may also cause the frame 21 to press the crushing device 30 disposed in the buffer safety space 13 of the headrest, so that the entire video device 20 retreats into the buffer safety space 13 to jointly absorb or reduce the external impact. The impact force is used to form the above-mentioned double buffer collapse mechanism.

In a preferred consideration, the preset supporting force of the crushing device 30 disposed between the display screen 22 and the frame 21 is smaller than the preset supporting force of the crushing device 30 disposed between the frame 21 and the substrate 12 . Therefore, when the video device 20 is impacted by an external force, the crushing device 30 between the display screen 22 and the frame 21 will first generate a crushing motion.

Referring to FIG. 7 , in a feasible embodiment, at least one elastic device 40 is also arranged between the first surface 33 and the second surface 34 (or the frame 21 and the display screen 22 ) of the crushing device 30 ; for example, The situation depicted by the imaginary line in the figure. The elastic device 40 can be used to assist the crushing device 30 to absorb the external impact force, and assist the display screen 22 or the video device 20 (or the frame 21 ) to return to its original position.

Please refer to FIG. 8 , in a modified embodiment, the main body 31 and the auxiliary body 32 of the crushing device 30 form a cylindrical shape; the auxiliary body 32 can also choose a cylinder structure. The chamber opening 36 a of the main body 31 is pivotally connected to the auxiliary body 32 . The cavity 36 of the main body 31 is formed with a convex portion 36b. When the external force makes the frame 21 press the auxiliary body 32, it will force the auxiliary body 32 to go beyond the limitation of the protrusion 36b, so that the length of the crushing device 30 is shortened;

Please refer to Fig. 9 and Fig. 10, in a derivative embodiment, the main body 31 and the auxiliary body 32 of the crushing device 30 form a shape of a plate; the main body 31 defines a groove chamber 31a (or an open groove chamber) pivot The pillars 32a formed on the sub-body 32 follow one another; and, the pillars 32a and the chamber 31a form an interference friction state. The chamber 31a of the main body 31 is formed with ribs 31b. When the external force makes the frame 21 press the auxiliary body 32, the column 32a of the auxiliary body 32 will be forced to cross the rib 31b, and be displaced along the groove chamber 31a, so that the length of the crushing device 30 will be reduced; and the video device 20 will retreat into the buffer Inside safe space 13.

The imaginary line part in FIG. 10 shows that the main body 31 and the auxiliary body 32 can be enclosed in a casing 55 . Therefore, the cooperation between the main body 31 and the auxiliary body 32 is restricted to operate inside the housing 55 .

Please refer to FIG. 11 and FIG. 12 , in a modified embodiment, the crushing device 30 is a columnar body provided with several grooves 30a; FIG. 12 shows that a weak portion 30b is formed between adjacent grooves 30a. Therefore, when the display screen 22 or the video device 20 is impacted by an external force, the display screen 22 or the frame 21 will force the crushing device 30 to break from the position of the weak part 30b, so that the crushing device 30 is reduced in length; into the frame 21, or allow the video device 20 to retreat into the alcove 11 of the headrest portion 10, to absorb or reduce the external impact force.

It can be understood that the crushing device 30 can also form a structure in which several plate-shaped bodies are connected, so that the area where the plate-shaped bodies are connected forms a weak quality part; or in the connected area or the weak quality part Set holes on. In a derivative embodiment, the crushing device 30 may be in the form of a seesaw, with a weak portion at one end, fixed on the base plate 12 (or frame 21 ) of the headrest portion 10, and the other end loads the frame 21 (or display Screen 22) Structure type.

Typically, the impact buffer structure of the vehicle video device has the following considerations and advantages compared with the old method under the condition of improving the safety of the video device 20: 1. The headrest 10. The matching type of the video device 20 and related component structures has been redesigned and considered; including: the alcove 11 of the headrest part 10 defines a buffer safety space 13 between the base plate 12 and the video device 20, and is equipped with a crushing device 30; the main body 31 of the crushing device 30 is provided with a chamber 36, an opening 36a and a shoulder 35a, and is pivotally connected with the auxiliary body 32 and the groove 37; allowing the auxiliary body 32 to respond to an external force and insert into the main body 31, so that the crushing device 30 is reduced in length The structural design and action pattern of parts such as, are obviously different from known technology. 2. The alcove 11 of the headrest part 10, the base plate 12, the video device 20, and the frame 21 are designed to provide a buffer safety space 13, which allows the entire video device 20 to have a range of motion or stroke when it is hit by an external force , to absorb or reduce the external impact force; it can significantly improve the situation of known accidents that cause occupants to hit the video device and cause personal injury.

Therefore, the utility model provides an effective impact buffer structure of a video device for a vehicle. Its spatial configuration is different from the known technology, and it has incomparable advantages in the old method. It shows considerable progress and is fully in line with Requirements for a utility model patent.

However, the above description is only a feasible embodiment of the utility model, and is not used to limit the scope of implementation of the utility model, that is, all equal changes and modifications made according to the patent scope of the utility model are all patents of the utility model covered by the scope.

Claims (29)

1. A collision buffer structure for a video device for a vehicle, comprising a combination of a headrest and a video device; the video device has a frame and a display screen arranged in the frame; it is characterized in that the headrest has an alcove, There is a buffer safety space in the alcove; the video device is installed in the alcove; a crushing device is provided between the frame and the headrest to provide a pre-force, allowing the collapsing device to shrink when the video device is impacted by an external force The length allows the video device to retreat into the buffer safety space of the headrest. 2 . The impact buffer structure of a video communication device for a vehicle according to claim 1 , wherein a substrate is provided in the alcove of the headrest; and the buffer safety space is located between the substrate and the frame of the video communication device. 3 . 3. The impact buffer structure of a video device for a vehicle according to claim 2, wherein the crushing device is arranged in the buffer safety space of the alcove, and pivotally connects the frame of the video device and the substrate of the headrest . 4. The impact buffer structure of a video device for a vehicle according to claim 1 or 3, wherein the crushing device comprises at least one main body and an auxiliary body corresponding to the main body; the main body is a hollow body; and the main body has The wall, the chamber defined by the wall, and the chamber opening; the auxiliary body is pivotally connected to the main body opening. 5. The impact buffer structure of a video communication device for a vehicle according to claim 4, wherein the wall of the main body forms a shoulder at the opening of the cavity; the auxiliary body is formed with a groove, and is pivotally connected to the main body On the opening, fit the shoulder of the main body; the auxiliary body has a head end, which is inserted into the cavity of the main body through the opening. 6. The impact buffer structure of a video communication device for a vehicle according to claim 4, wherein the main body is a cylindrical body; the auxiliary body is a cylindrical body or a cylindrical body; the main body chamber is formed with a convex portion . 7. The impact buffer structure of a video communication device for a vehicle as claimed in claim 5, wherein the main body and the auxiliary body are in a cone-shaped structure, defining short sides and long sides respectively; the opening is formed on the short side of the main body area; the area of the opening is smaller than the cross-sectional area of the chamber; the wall of the main body is formed with a groove; the groove is formed in the area of the short side of the auxiliary body. 8. The impact buffer structure of a video communication device for a vehicle according to claim 4, wherein the main body is arranged on a first surface, so that the main body and the first surface are connected to the substrate; and the auxiliary body is arranged on a first surface On the second face, connect the subbody and the second face to the frame. 9. The impact buffer structure of a video communication device for a vehicle according to claim 6, wherein the main body is arranged on a first surface, so that the main body and the first surface are connected to the substrate; and the auxiliary body is arranged on a first surface On the second face, connect the subbody and the second face to the frame. 10 . The shock absorbing structure of a video communication device for a vehicle according to claim 8 , wherein the first surface and the second surface cooperate with the fixer and are respectively locked on the base plate and the frame. 11 . 11 . The impact buffer structure of a video communication device for a vehicle according to claim 8 , wherein a foundation pile is disposed between the first surface and the second surface. 11 . 12. The impact buffer structure of a video communication device for a vehicle according to claim 4, wherein the frame allows the auxiliary body to enter the cavity of the main body; and the wall of the main body produces expansion deformation; and the auxiliary body and the main body produce interference friction The resistance causes the crushing device to reduce in length. 13 . The shock absorbing structure of a video communication device for a vehicle according to claim 12 , wherein the frictional resistance of the interference state between the auxiliary body and the main body is less than an external force. 14 . 14 . The impact buffer structure of a video communication device for a vehicle according to claim 1 , wherein a safety space is defined between the frame and the display screen, and a crushing device is disposed in the safety space. 15 . 15. The impact buffer structure of a video communication device for a vehicle according to claim 14, wherein the crushing device arranged between the display screen and the frame forms a pre-force, which is smaller than that arranged between the frame and the head. The pre-force formed by the crushing device between the occiputs. 16. The impact buffer structure of a video communication device for a vehicle according to claim 1, wherein at least one elastic device is disposed between the frame and the headrest. 17 . The shock absorbing structure of a video communication device for a vehicle according to claim 8 , wherein at least one elastic device is disposed between the first surface and the second surface. 18. The impact buffer structure of a video communication device for a vehicle according to claim 14, wherein at least one elastic device is disposed between the frame and the display screen. 19. The impact buffer structure of a video device for a vehicle according to claim 1, wherein the crushing device comprises at least one main body and an auxiliary body corresponding to the main body; the main body and the auxiliary body form a plate structure; the main body A groove is defined to pivotally connect the column formed on the auxiliary body; the groove of the main body is formed with a rib. 20 . The impact buffer structure of a video communication device for a vehicle according to claim 19 , wherein the column and the groove chamber form an interference friction state. 21 . 21. The shock absorbing structure of a video communication device for a vehicle according to claim 19, wherein the main body and the auxiliary body are wrapped in a casing. 22 . The shock absorbing structure of a video communication device for a vehicle according to claim 1 or 14 , wherein the crushing device is provided with several grooves; and a weak portion is formed between adjacent grooves. 23 . 23 . The impact buffer structure of a video communication device for a vehicle according to claim 22 , wherein the crushing device is a columnar body. 24 . 24. The impact buffer structure of a video communication device for a vehicle as claimed in claim 1 or 14, wherein the crushing device forms a structure in which several plate-shaped bodies are connected; the connected areas of the plate-shaped bodies form a The structure of the weak part. 25. The impact buffer structure of a video communication device for a vehicle according to claim 1 or 14, wherein the crushing device forms a structure of a plate-shaped body; the plate-shaped body forms a weak portion; the weak portion Holes are provided on it. 26. The impact buffer structure of a video communication device for a vehicle according to claim 2, wherein the crushing device forms a seesaw structure, one end has a weak part fixed on the base plate of the headrest, and the other end load frame. 27 . The impact buffer structure of a video communication device for a vehicle according to claim 14 , wherein the crushing device is formed as a seesaw structure, one end has a weak part fixed to the frame, and the other end loads a display screen. 28 . The impact buffer structure of a video communication device for a vehicle as claimed in claim 7 , wherein the length of the groove is greater than or equal to one of the heights of 1/2 of the wall. 29 . The impact buffer structure of a video communication device for a vehicle as claimed in claim 1 , wherein the headrest part is made of foam material, and the covering protrudes from the periphery of the video communication device. 29 .

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