阅读说明：本技术 多功能道路抢修应急指示牌 (Multifunctional emergency indicator board for road emergency repair ) 是由 胡少凡 于 2020-12-18 设计创作，主要内容包括：本发明属于道路指示牌技术领域,尤其涉及一种多功能道路抢修应急指示牌。本发明,包括指示牌连接架,所述的指示牌连接架底部设有常规道路指示牌,所述的常规道路指示牌上设有若干道路指向标识。本发明通过设置路况抢修指示组件,在道路需要维修抢修时,将维修道路所对应的路况抢修指示组件下移,下降的路况抢修指示组件带有维修禁止通行的标志,便于驾驶员更快更便捷的了解道路状态,方便驾驶员进行更早的变道,减少由于临时变道而发生的交通事故,提高了安全性,路况抢修指示组件还可进行角度调整,便于不同角度的驾驶员进行观察,实用性较强。(The invention belongs to the technical field of road signs, and particularly relates to a multifunctional road emergency repair sign. The road sign comprises a sign connecting frame, wherein a conventional road sign is arranged at the bottom of the sign connecting frame, and a plurality of road direction signs are arranged on the conventional road sign. According to the road condition emergency repair indicating assembly, the road condition emergency repair indicating assembly corresponding to the maintained road is moved downwards when the road needs to be maintained and repaired, the descending road condition emergency repair indicating assembly is provided with the mark for forbidding the passing of maintenance, so that a driver can know the road state more quickly and conveniently, the driver can change lanes earlier conveniently, traffic accidents caused by temporary lane changing are reduced, the safety is improved, the road condition emergency repair indicating assembly can also adjust the angle, the driver at different angles can observe conveniently, and the practicability is high.)

1. A multifunctional emergency sign for road emergency repair comprises a sign connecting frame (1), it is characterized in that the bottom of the sign connecting frame (1) is provided with a conventional road sign (2), a plurality of road pointing signs (3) are arranged on the conventional road sign (2), a plurality of circumferential driving seats (4) which can reciprocate linearly along the vertical direction are arranged on the conventional road sign (2), a rotatable road condition rush-repair indicating component (5) is arranged below the circumferential driving seat (4), the road condition emergency repair indicating component (5) corresponds to the position of the road pointing sign (3), the road condition emergency repair indicating component (5) is connected with the circumferential driving seat (4), the conventional road sign (2) is also provided with an elastic reset auxiliary piece (6), the elastic reset auxiliary part (6) corresponds to the position of the road condition emergency repair indicating component (5).

2. The multifunctional emergency sign for road emergency repair of claim 1, wherein the road condition emergency indication assembly (5) is located at the rear end of the conventional road sign (2), the road direction sign (3) is located at the front end of the conventional road sign (2), the conventional road sign (2) is provided with a linear driving member (7), and the linear driving member (7) is connected with the circumferential driving seat (4).

3. The multifunctional emergency sign for road repair of claim 2, wherein the road condition emergency indication assembly (5) comprises a road condition emergency indication board (8) arranged below the circumferential driving seat (4), the road condition emergency indication board (8) is provided with an emergency warning mark (9), the road condition emergency indication board (8) is provided with a warning illuminating part (10), and the warning illuminating part (10) corresponds to the emergency warning mark (9).

4. The multifunctional emergency sign for road emergency repair of claim 3, wherein a circumferential rotator (11) is arranged in the circumferential driving seat (4), the bottom of a rotating shaft of the circumferential rotator (11) is connected with an emergency repair sign connecting part (111), and the emergency repair sign connecting part (111) is connected with the road condition emergency repair sign (8).

5. The multifunctional emergency sign for road emergency maintenance of claim 4, wherein the emergency sign connecting portion (111) comprises a connecting disc (12) arranged at the bottom of a rotating shaft of the circumferential rotator (11), the connecting disc (12) is connected with the road condition emergency maintenance sign (8) through a rotating shaft, a front butt plate (13) is arranged on the connecting disc (12), and the front butt plate (13) is matched with the road condition emergency maintenance sign (8) in a butting mode.

6. The multifunctional emergency sign for road repair of claim 5, wherein the warning illumination part (10) comprises an illumination base (14) arranged at the bottom of the road condition emergency sign (8), a warning mark illumination lamp (15) is arranged in the illumination base (14), the position of the warning mark illumination lamp (15) corresponds to that of the emergency sign (9), an adsorption alignment part (16) is arranged at the top of the illumination base (14), and the adsorption alignment part (16) is matched with the conventional road sign (2) in a butting mode.

7. The multifunctional emergency sign for rush repair of roads as claimed in claim 5, wherein the conventional road sign (2) is provided with a positioning hole (17) with a downward opening, the adsorption positioning member (16) comprises a positioning magnet block (18) arranged at the top of the illumination base (14), a magnet plate (19) is arranged in the positioning hole (17), the magnet plate (19) and the positioning magnet block (18) attract each other through magnetism, and the cross-sectional area of the positioning hole (17) is greater than that of the positioning magnet block (18).

8. The multifunctional emergency sign for road emergency repair of claim 7, wherein the elastic reset auxiliary member (6) comprises a back connecting plate (20) arranged on the conventional road sign (2), the back connecting plate (20) is provided with a slant fixed vertical plate (21), the slant fixed vertical plate (21) is provided with a sliding rod (22) and a buffer punch head (23) which can move in a straight reciprocating manner, and the buffer punch head (23) corresponds to the position of the emergency sign for road condition (8).

9. The emergency sign for rush repair of road according to claim 8, wherein the slant fixing hanging plate (21) is provided with a fixing slide seat (24), the bottom of the sliding rod (22) extends into the fixing slide seat (24) and the sliding rod (22) is in sliding fit with the fixing slide seat (24), and the sliding rod (22) is connected with the slant fixing hanging plate (21) through a spring (25).

10. The multifunctional emergency sign for road emergency repair of claim 2, wherein the linear driving member (7) comprises a fixed top seat (26) arranged on the conventional road sign (2), a linear driver (27) is arranged in the fixed top seat (26), and a power shaft of the linear driver (27) is connected with the circumferential driving seat (4).

Technical Field

The invention belongs to the technical field of road signs, and relates to a multifunctional road emergency repair sign.

Background

The road traffic sign is a graphic symbol for displaying traffic laws and regulations and road information, can make the traffic laws and regulations obtain visual, concrete and concise expression, and at the same time, can express the contents which are difficult to describe by using words, and can be used for managing traffic and indicating driving direction to ensure the facilities of road smoothness and driving safety. At present because the extension of urban interior road, rebuilding and long-time use, the road need be maintained often and salvageed, salvagees the sign on highway section and is difficult effectively to warn the driver that this highway section is in the maintenance state, and is prohibited current, and the driver is difficult to lead to the fact the traffic accident easily through the quick understanding road state of sign, and the safety warning nature is comparatively general.

In order to overcome the deficiencies of the prior art, various solutions have been proposed through continuous exploration, for example, chinese patent discloses an improved road sign [ application No.: 201610751556.3], including the stand, the stand is fixed with the locating rack, be provided with the mounting panel through an adjustment structure on the locating rack, the adjustment structure is including seting up a plurality of locating holes on the locating rack, hollow slider and positioning bolt, the slider sets up on the locating rack, positioning bolt threaded connection is on the slider, the positioning bolt tip can insert in arbitrary one locating hole, the mounting panel is fixed on the slider, be provided with the indicator lever on the mounting panel, the indicator lever includes leading-in portion and instruction portion, leading-in portion is vertical to be fixed on the mounting panel, instruction portion one end articulates in leading-in portion through the pivot, the instruction portion other end is the free end. The invention has the advantage of labor saving in operation. But this scheme is when the road is maintained, and the sign still can't effectively warn the driver that this highway section is in the maintenance state, and it is current to forbid, and the driver is difficult to lead to the fact traffic accident easily through the quick understanding road state of sign, has the comparatively general defect of safety warning nature.

Disclosure of Invention

The invention aims to solve the problems and provides a multifunctional emergency indicator board for rush repair of roads.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a multi-functional road emergency sign of salvageing, includes the sign link, sign link bottom be equipped with conventional road sign, conventional road sign on be equipped with the directional sign of a plurality of roads, conventional road sign on be equipped with a plurality of circumference drive seats that can follow vertical direction reciprocating linear motion, circumference drive seat below be equipped with rotatable road conditions and salvage and instruct the subassembly, road conditions salvage and instruct the position of subassembly and the directional sign of road corresponding, road conditions salvage and instruct the subassembly and link to each other with circumference drive seat, conventional road sign on still be equipped with the elasticity auxiliary component that resets, the elasticity auxiliary component that resets and road conditions salvage the position of instructing the subassembly corresponding.

In foretell emergent sign is salvageed to multi-functional road, the road conditions salvage and instruct the subassembly to be located conventional road sign rear end, the directional sign of road be located conventional road sign front end, conventional road sign on be equipped with the linear driving piece, the linear driving piece drive seat with circumference and link to each other.

In foretell emergent sign is salvageed to multi-functional road, the road conditions salvage and instruct the subassembly including setting up the road conditions sign of salvageing below the circumference drive seat, the road conditions salvage and be equipped with salvagees the warning sign on the sign, the road conditions salvage the sign bottom and be equipped with warning lighting parts, warning lighting parts and the position of salvageing the warning sign corresponding.

In foretell emergent sign is salvageed to multi-functional road, the circumference drive seat in be equipped with the circumference rotation ware, the axis of rotation bottom of circumference rotation ware be connected with salvage sign connecting portion, salvage sign connecting portion salvage the sign with the road conditions and link to each other.

In foretell emergent sign is salvageed to multi-functional road, salvage sign connecting portion including setting up in the connection pad of circumference rotation ware axis of rotation bottom, connection pad and road conditions salvage and link to each other through the pivot between the sign, the connection pad on be equipped with anterior butt plate, anterior butt plate salvage sign looks butt cooperation with the road conditions.

In foretell multifunctional road salvagees emergency sign, warning illumination spare including setting up in the road conditions illumination base of salvageing sign bottom, illumination base in be equipped with warning sign lamp, warning sign lamp and the position of salvageing warning sign corresponding, illumination base top be equipped with and adsorb counterpoint piece, adsorption counterpoint piece and the cooperation of conventional road sign looks butt.

In foretell emergent sign is salvageed to multi-functional road, conventional road sign in be equipped with opening counterpoint hole down, the absorption counterpoint piece including setting up in the counterpoint magnet piece at illumination base top, the counterpoint downthehole magnet board that is equipped with, magnet board and counterpoint magnet piece inhale through magnetism mutually, the cross-sectional area in counterpoint hole be greater than the cross-sectional area of counterpoint magnet piece.

In foretell emergent sign is salvageed to multi-functional road, the elasticity auxiliary member that resets including setting up the back connecting plate on conventional road sign, the back connecting plate on be equipped with the fixed board that hangs down of slant, the fixed board that hangs down of slant on be equipped with the slide bar and the buffer head that can follow straight reciprocating motion, buffer head and road conditions salvage the position of sign corresponding.

In foretell emergency sign is salvageed to multi-functional road, the fixed plumbing plate of slant on be equipped with fixed slide, the slide bar bottom extend through to fixed slide in and slide bar and fixed slide looks sliding fit, slide bar and slant fixed plumbing plate between link to each other through the spring.

In foretell emergent sign is salvageed to multi-functional road, linear driving piece including setting up the fixed footstock on conventional road sign, fixed footstock in be equipped with the sharp driver, the power shaft and the circumference drive seat of sharp driver link to each other.

Compared with the prior art, the invention has the advantages that:

1. by arranging the road condition emergency repair indicating component, when a road needs to be maintained and repaired, the road condition emergency repair indicating component corresponding to the maintained road is moved downwards, the descending road condition emergency repair indicating component is provided with a mark for forbidding the passing of maintenance, so that a driver can know the road state more quickly and conveniently, the driver can change lanes earlier conveniently, traffic accidents caused by temporary lane changing are reduced, the safety is improved, the angle adjustment can also be carried out on the road condition emergency repair indicating component, the observation of the drivers at different angles is facilitated, the practicability is stronger, and meanwhile, by arranging the elastic reset auxiliary component, after the road condition emergency repair indicating component is accidentally collided by the vehicle, the road condition emergency repair indicating component can be protected by the elastic resetting auxiliary component, and the road condition emergency repair indicating assembly is restored to the initial position, the service life of the device is prolonged, and the maintenance cost is reduced.

2. According to the invention, the alignment magnet block and the magnet plate are arranged, the alignment magnet block is inserted into the alignment hole in a daily state, the illumination base is fixed through the magnetic force action between the magnet plate and the alignment magnet block, the cross sectional area of the alignment hole is larger than that of the alignment magnet block, and the alignment magnet block can still be smoothly inserted into the alignment hole after the illumination base is slightly angularly offset, so that the situation of shell clamping is avoided.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view in another direction of the present invention.

Fig. 3 is a schematic structural view of a road condition emergency repair sign.

In the figure: sign link 1, conventional road sign 2, the directional sign 3 of road, circumference drive seat 4, road conditions are salvageed and are instructed subassembly 5, elasticity auxiliary part that resets 6, linear driving piece 7, road conditions are salvageed sign 8, salvage warning sign 9, warning illuminating part 10, circumference rotating device 11, salvage sign connecting portion 111, connection pad 12, anterior butt joint board 13, illumination base 14, warning sign lamp 15, adsorb counterpoint piece 16, counterpoint hole 17, counterpoint magnet piece 18, magnet board 19, back connecting plate 20, the fixed board 21 that hangs down of slant, slide bar 22, buffer head 23, fixed slide 24, spring 25, fixed footstock 26, linear actuator 27.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1-3, a multi-functional road emergency sign of salvageing, including sign link 1, 1 bottom of sign link be equipped with conventional road sign 2, conventional road sign 2 on be equipped with the directional sign 3 of a plurality of roads, conventional road sign 2 on be equipped with a plurality of circumference drive seats 4 that can follow the reciprocal linear motion of vertical direction, 4 below of circumference drive seat be equipped with rotatable road conditions and salvage and instruct subassembly 5, the road conditions salvage and instruct subassembly 5 corresponding with the position of the directional sign 3 of road, the road conditions salvage and instruct subassembly 5 and circumference drive seat 4 to link to each other, conventional road sign 2 on still be equipped with elasticity auxiliary assembly 6 that resets, elasticity auxiliary assembly 6 and road conditions salvage and instruct the position of subassembly 5 corresponding.

In the embodiment, the indicator connecting frame 1 is fixedly connected through the road upright post, so that the conventional road indicator 2 is fixed above the road, road indication is carried out on the vehicle through the road direction mark 3 under the daily state, when the road needs to be maintained and rush-repaired, the circumferential driving seat 4 corresponding to the maintenance is moved downwards to drive the road condition rush-repair indicating component 5 to synchronously move downwards, the descending road condition rush-repair indicating component 5 is provided with a mark for forbidding the maintenance to pass, the driver can know the road state more quickly and conveniently, the driver can change the road more quickly, the traffic accidents caused by temporary road change are reduced, the safety is improved, the road condition rush-repair indicating component 5 can also be subjected to angle adjustment, the observation by the drivers at different angles is facilitated, the practicability is strong, after the vehicle collides with the road condition rush-repair indicating component 5 accidentally, the road condition rush-repair indicating component 5 can also be protected through the elastic resetting auxiliary component 6, and make road conditions salvage and instruct subassembly 5 to resume to initial position, improved the life of device, reduced cost of maintenance.

Combine figure 1, fig. 2 to show, road conditions salvage and indicate subassembly 5 to be located conventional road sign 2 rear ends, directional sign 3 of road be located conventional road sign 2 front ends, conventional road sign 2 on be equipped with linear driving piece 7, linear driving piece 7 drive seat 4 with circumference and link to each other.

Specifically speaking, salvage and instruct subassembly 5 as needs go up and down circumference drive seat 4 and road conditions, start linear driving piece 7, drive circumference drive seat 4 and road conditions through linear driving piece 7 and salvage instruct subassembly 5 go up and down can, degree of automation is higher.

Combine fig. 2, fig. 3 to show, road conditions salvage indication subassembly 5 salvage sign 8 including setting up in the road conditions of circumference drive seat 4 below, road conditions salvage sign 8 on be equipped with and salvage warning sign 9, road conditions salvage sign 8 bottom be equipped with warning illuminating part 10, warning illuminating part 10 and salvage warning sign 9's position corresponding.

In this embodiment, when the road that sign 8 corresponds is salvageed to road conditions when the maintenance or salvage, drive 4 descendants of circumference drive seat, it salvages sign 8 and warning lighting part 10 synchronous decline to drive the road conditions, salvage warning sign 9 and be used for reminding the driver that this road is in the maintenance state, can not pass, the faster more convenient understanding road state of driver of being convenient for, make things convenient for the driver to carry out earlier lane change, reduce the traffic accident because interim lane change takes place, the security has been improved, warning lighting part 10 can shine salvage warning sign 9 at night, the warning effect has further been improved.

Circumference drive seat 4 in be equipped with circumference rotation ware 11, circumference rotation ware 11 the axis of rotation bottom be connected with and salvage sign connecting portion 111, salvage sign connecting portion 111 and road conditions salvage sign 8 and link to each other.

In this embodiment, salvage sign connecting portion 111 is used for connecting fixed road conditions and salvages sign 8, and make the road conditions salvage sign 8 rotate, when the road conditions needs to be adjusted and the angle of sign 8 is salvageed, start circumference rotating device 11, the axis of rotation through circumference rotating device 11 drives and salvages sign connecting portion 111 and the road conditions and salvages sign 8 and rotate, technical personnel in the field should understand, circumference rotating device 11 can be the steering wheel.

Combine shown in fig. 2, salvage sign connecting portion 111 including setting up in connection pad 12 of 11 axis of rotation bottoms of circumference rotating device, connection pad 12 and road conditions salvage and link to each other through the pivot between the sign 8, connection pad 12 on be equipped with anterior butt plate 13, anterior butt plate 13 salvage the sign 8 looks butt cooperation with the road conditions.

In this embodiment, salvage sign 8 back when the unexpected road conditions of coming and going vehicle collision, connect pad 12 and road conditions salvage and link to each other through the pivot between the sign 8, this revolution mechanic can make the road conditions salvage sign 8 can not broken by the rupture after being collided, the life of sign 8 is salvageed to the road conditions has been improved, reduce cost of maintenance, anterior butt joint board 13 can salvage sign 8 to the road conditions and play the butt effect, avoid the road conditions to salvage sign 8 and conventional road sign 2 bumps.

Warning illumination spare 10 including setting up in the road conditions illumination base 14 of salvageing sign 8 bottom, illumination base 14 in be equipped with warning sign lamp 15, warning sign lamp 15 corresponding with the position of salvageing warning sign 9, illumination base 14 top be equipped with and adsorb counterpoint piece 16, the cooperation of adsorbing counterpoint piece 16 and the 2 looks butt of conventional road sign.

In this embodiment, when warning maintenance road at night, shine through warning sign lamp 15 and salvage warning sign 9, further improve the warning effect of salvageing warning sign 9, improve road driving safety, under daily state, fix illumination base 14 through adsorbing alignment member 16.

Conventional road sign 2 in be equipped with the counterpoint hole 17 that the opening is down, absorption counterpoint piece 16 including setting up in the counterpoint magnet piece 18 at illumination base 14 top, counterpoint hole 17 in be equipped with magnet board 19, magnet board 19 and counterpoint magnet piece 18 inhale through magnetism looks, the cross-sectional area of counterpoint hole 17 be greater than the cross-sectional area of counterpoint magnet piece 18.

In this embodiment, in a daily state, the alignment magnet block 18 is inserted into the alignment hole 17, the illumination base 14 is fixed by the magnetic force between the magnet plate 19 and the alignment magnet block 18, the cross-sectional area of the alignment hole 17 is larger than that of the alignment magnet block 18, and after the illumination base 14 is slightly angularly displaced, the alignment magnet block 18 can still be smoothly inserted into the alignment hole 17, thereby avoiding the occurrence of the case jamming.

Combine shown in fig. 2, elasticity auxiliary member 6 that resets including setting up back connecting plate 20 on conventional road sign 2, back connecting plate 20 on be equipped with the fixed board 21 that hangs down of slant, the fixed board 21 that hangs down of slant on be equipped with can follow straight reciprocating motion's slide bar 22 and slow drift 23, buffer head 23 and road conditions salvage the position of sign 8 and correspond.

In this embodiment, back connecting plate 20 is used for connecting the fixed plumbing board 21 of fixed slant, when sign 8 back is salvageed to the road conditions of vehicle accidental collision, sign 8 can be salvaged to the road conditions and the contact of buffering head 23, salvagees sign 8 through buffering head 23 to the road conditions and cushions, and buffering head 23 is made by rubber materials, salvages sign 8 to the road conditions and plays the guard action, has improved the life of device, has reduced cost of maintenance.

Referring to fig. 1 and 2, a fixing slide 24 is disposed on the oblique fixing hanging plate 21, the bottom of the sliding rod 22 extends into the fixing slide 24, the sliding rod 22 is in sliding fit with the fixing slide 24, and the sliding rod 22 is connected with the oblique fixing hanging plate 21 through a spring 25.

In this embodiment, salvage sign 8 and can contact the back with buffering head 23 when the road conditions, buffering head 23 absorbs partly impact force, and another part impact force is absorbed to spring 25, salvages sign 8 to the road conditions and plays the guard action, can salvage sign 8 with the road conditions and resume to initial position through spring 25's elasticity effect simultaneously.

Referring to fig. 2, the linear driving member 7 includes a fixed top seat 26 disposed on the conventional road sign 2, a linear driver 27 is disposed in the fixed top seat 26, and a power shaft of the linear driver 27 is connected to the circumferential driving seat 4.

In this embodiment, the fixed top seat 26 is used to mount a fixed linear actuator 27, and when the circumferential driving seat 4 needs to be lifted, the linear actuator 27 is started to drive the circumferential driving seat 4 to move through a power shaft of the linear actuator 27, and it should be understood by those skilled in the art that the linear actuator 27 may be an air cylinder, an oil cylinder, or a linear motor.

The working principle of the invention is as follows:

the sign connecting frame 1 is fixedly connected through the road upright post, so that a conventional road sign 2 is fixed above a road, road indication is carried out on vehicles through the road direction sign 3 under the daily state, when the road needs maintenance and rush repair, the circumferential driving seat 4 corresponding to the maintenance is moved downwards to drive the road condition rush repair sign 8 and the warning illuminating piece 10 to synchronously descend, the rush repair warning sign 9 is used for reminding a driver that the road is in the maintenance state and can not pass, so that the driver can know the road state more quickly and conveniently, the driver can change lanes earlier conveniently, traffic accidents caused by temporary lane change are reduced, the safety is improved, the warning illuminating piece 10 can irradiate the rush repair warning sign 9 at night, the warning effect is further improved, the road condition rush repair sign 8 can also be subjected to angle adjustment, and the drivers with different angles can observe conveniently, the practicability is stronger,

back connecting plate 20 is used for connecting fixed slant fixed plumbing board 21, when rush-repair sign 8 at vehicle accidental collision road conditions after, sign 8 can be salvaged with buffer head 23 contact to the road conditions, rush-repair sign 8 to the road conditions through buffer head 23 and cushion, buffer head 23 is made by rubber materials, rush-repair sign 8 to the road conditions and play the guard action, the service life of the device is prolonged, the maintenance cost is reduced, rush-repair sign 8 to the road conditions can contact with buffer head 23 after, buffer head 23 absorbs a part of impact force, spring 25 absorbs another part of impact force, rush-repair sign 8 to the road conditions and play the guard action, simultaneously can restore road conditions sign 8 to the initial position through spring 25's elastic force effect.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit of the invention.

Although the terms of the sign connecting frame 1, the conventional road sign 2, the road direction sign 3, the circumferential driving seat 4, the road condition emergency repair indicating assembly 5, the elastic reset auxiliary member 6, the linear driving member 7, the road condition emergency repair sign 8, the emergency repair warning sign 9, the warning illuminating member 10, the circumferential rotator 11, the emergency repair sign connecting portion 111, the connecting disc 12, the front abutting plate 13, the illuminating base 14, the warning sign illuminating lamp 15, the adsorption aligning member 16, the aligning hole 17, the aligning magnet block 18, the magnet plate 19, the back connecting plate 20, the slant fixing hanging plate 21, the sliding rod 22, the buffer head 23, the fixing slide seat 24, the spring 25, the fixing top seat 26, the linear driver 27 and the like are used more often, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.