阅读说明：本技术 一种具有防颠簸功能的拓展型户外汽车后排座椅 (Outdoor car back-row seat of expansion type with prevent jolting function ) 是由 倪晋尚 皮连根 于瑞 吴孟宝 王中磊 于 2020-07-08 设计创作，主要内容包括：本发明公开了一种具有防颠簸功能的拓展型户外汽车后排座椅,包括底板、第一置物板、固定板和椅座,底板上设有套筒,套筒内贯穿有竖杆,竖杆的上下分别设有第一置物板和第一固定块,第一固定块下固定有第一气囊；底板上设有竖板,竖板和底板的各边侧之间设有横杆,横杆上嵌套有滑块,滑块的两侧连接有第一弹簧,滑块的上表面设有转轴,转轴上方连接有支撑杆；第一置物板的下方内部预留有置物槽,置物槽内设有安装板,安装板下方连接支撑杆,置物槽的内壁固定有第二固定块,第二固定块的端头处设有第二气囊,第二气囊与安装板连接；第一置物板上方依次设有固定板和椅座。本发明整体的缓震效果较好,便于将不同的功能区进行拆分,降低了检修的难度。(The invention discloses an expanded outdoor automobile back-row seat with an anti-bumping function, which comprises a bottom plate, a first object placing plate, a fixing plate and a seat, wherein a sleeve is arranged on the bottom plate, a vertical rod penetrates through the sleeve, the upper part and the lower part of the vertical rod are respectively provided with the first object placing plate and a first fixing block, and a first air bag is fixed below the first fixing block; the bottom plate is provided with a vertical plate, a cross rod is arranged between the vertical plate and each side of the bottom plate, a sliding block is nested on the cross rod, two sides of the sliding block are connected with first springs, the upper surface of the sliding block is provided with a rotating shaft, and a support rod is connected above the rotating shaft; a storage groove is reserved in the lower portion of the first storage plate, a mounting plate is arranged in the storage groove, a support rod is connected to the lower portion of the mounting plate, a second fixing block is fixed to the inner wall of the storage groove, a second air bag is arranged at the end of the second fixing block, and the second air bag is connected with the mounting plate; a fixing plate and a chair seat are sequentially arranged above the first object placing plate. The integral shock absorption effect of the invention is better, the different functional areas can be conveniently split, and the difficulty of maintenance is reduced.)

1. An expanded outdoor automobile back-row seat with an anti-bumping function is characterized in that the seat comprises a bottom plate, a first object placing plate, a fixing plate and a seat;

the bottom plate is provided with a sleeve, a vertical rod penetrates through the sleeve, the upper end and the lower end of the vertical rod are respectively provided with the first object placing plate and a first fixing block, a first air bag is fixed below the first fixing block, and the first air bag is located in the sleeve;

the upper surface of the bottom plate is fixedly provided with a plurality of vertical plates, a cross rod is arranged between each side of each vertical plate and each bottom plate, a sliding block is nested on each cross rod, two sides of each sliding block are connected with first springs, the sliding blocks can drive the first springs to be extruded and deformed when sliding on the cross rods, a rotating shaft is arranged on the upper surface of each sliding block, and a supporting rod is connected above each rotating shaft;

a storage groove is reserved in the lower portion of the first storage plate, a mounting plate is arranged in the storage groove, the support rod is connected to the lower portion of the mounting plate, a second fixing block is fixed to the inner wall of the storage groove, a second air bag is connected to the end of the second fixing block and connected with the mounting plate, and the mounting plate is movably connected with the first storage plate;

the fixed plate is fixedly arranged above the first object placing plate, and the seat is fixed on the upper surface of the fixed plate.

2. The outdoor development type rear seat with bumping prevention function as claimed in claim 1, wherein the lower surface of the fixing plate is provided with a cavity, a second object placing plate is transversely arranged in the cavity in a penetrating way, the bottom of the second object placing plate is fixed with a fixing rod, and the fixing rod is connected to the top of the first object placing plate; a limiting groove is formed in the edge of the cavity on the fixing plate; the middle of the second object placing plate is provided with an extrusion plate, the end of the extrusion plate is connected with two extrusion blocks, the bottom of each extrusion block is fixed with a fixture block, the outer side of each fixture block is provided with a chute, a second spring is arranged inside each chute, and the fixture block can slide in the chute; the second is put and is equipped with the connecting plate on the thing board, and the connecting plate is located the both sides of extrusion piece, the outer wall of connecting plate transversely is fixed with the restriction pole, and the outside nestification of restriction pole has the third spring, and the thing board setting is put in the second to the outer end protrusion of restriction pole, the outer end of restriction pole with the restriction groove corresponds the matching setting.

3. The outdoor development automobile back row seat with the jolt prevention function as claimed in claim 2, wherein the extrusion plate is arranged in a diamond shape, and the end of the extrusion plate is tightly attached to the extrusion block; the limiting rods are symmetrically arranged on the axis of the extrusion block, and the extrusion block is in a trapezoidal arrangement; and the limiting rod and the second object placing plate form a sliding installation structure through a third spring, and the outer diameter of the limiting rod and the limiting groove are arranged on the same horizontal plane.

4. A developed outdoor rear seat with an anti-bumping function for automobiles, as claimed in any one of claims 1 to 3, wherein said mounting plate is mounted inside the lower part of the first object-placing plate, and is movably connected with the first object-placing plate through the sandwich structure of said second fixing block-said second air bag-said second fixing block, and the two second fixing blocks are respectively fixed on the outside of the mounting plate and the inner wall of the first object-placing plate.

5. The outdoor vehicle rear seat with the anti-bumping function as claimed in claim 4, wherein the mounting plate and the first object placing plate form a sliding mounting structure through an object placing groove, and the side of the mounting plate is fixed with the second air bag at an equal angle.

6. An outdoor car back row seat of expansion type with prevent jolt function of any one of claim 1-3, characterized in that, the upper surface of seat support is provided with the baffle, and the arm backing plate is installed at the top of baffle, the upper surface of arm backing plate is fixed with the arm protection pad, and is the bonding connection between arm protection pad and the arm backing plate, the end department of seat support is provided with the back backup plate, and the inner wall of back backup plate is fixed with the back protection pad.

7. A developed outdoor vehicle rear seat with an anti-bumping function as claimed in any one of claims 1 to 3, wherein the vertical rods are symmetrically arranged about the axis of the sleeve, and the vertical rods and the sleeve form a lifting installation structure through the first air bag.

8. An outdoor vehicle back row seat with an anti-bumping function as claimed in any one of claims 1-3, wherein the cross bars are equiangularly distributed inside the bottom plate, and a sliding installation structure is formed between the cross bars and the sliding block through a first spring.

9. An outdoor vehicle rear seat with an anti-bumping function as claimed in any one of claims 1 to 3, wherein the first object-placing plate and the bottom plate form a lifting installation structure, and are arranged in parallel.

10. An outdoor vehicle back row seat with an anti-bumping function as claimed in any one of claims 1 to 3, wherein the support bar is arranged in an inclined manner, and the support bar and the slide block form a rotary mounting structure through a rotary shaft.

Technical Field

The invention relates to an automobile seat, in particular to an expanded outdoor automobile back-row seat with an anti-bumping function.

Background

The car seat is a seat that is used for the passenger to take, along with the continuous improvement of people's standard of living, people are to the demand crescent of car, because people's cross-country demand, extend outdoor car seat and also continuously update, people are at the cross-country in-process in open air, and the function of car back row seat is more and more comprehensive, and the outdoor car back row seat of extension that nevertheless has now has following problem:

(1) the overall anti-bumping performance is poor when the outdoor seat is used, most roads are not smooth enough in the outdoor driving process, and the comfort level of riding is affected by bumping of the seat;

(2) after the seat is taken for a long time, the taking area and the cushioning area of the seat are not convenient to split, and the difficulty of overhauling is increased.

In order to solve the problems, innovative design is urgently needed on the basis of the original automobile rear-row seat.

Disclosure of Invention

The invention aims to provide an expanded outdoor automobile back-row seat with an anti-bumping function, and aims to solve the problems that the existing automobile back-row seat is poor in cushioning effect in the riding process, different functional sentences of the seat are inconvenient to split, and the use difficulty of the device is increased in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an expansion type outdoor automobile back-row seat with a jolting prevention function comprises a bottom plate, a first object placing plate, a fixing plate and a seat; the bottom plate is provided with a sleeve, a vertical rod penetrates through the sleeve, the upper end and the lower end of the vertical rod are respectively provided with the first object placing plate and a first fixing block, a first air bag is fixed below the first fixing block, and the first air bag is located in the sleeve; the upper surface of the bottom plate is fixedly provided with a plurality of vertical plates, a cross rod is arranged between each side of each vertical plate and each bottom plate, a sliding block is nested on each cross rod, two sides of each sliding block are connected with first springs, the sliding blocks can drive the first springs to be extruded and deformed when sliding on the cross rods, a rotating shaft is arranged on the upper surface of each sliding block, and a supporting rod is connected above each rotating shaft; a storage groove is reserved in the lower portion of the first storage plate, a mounting plate is arranged in the storage groove, the support rod is connected to the lower portion of the mounting plate, a second fixing block is fixed to the inner wall of the storage groove, a second air bag is connected to the end of the second fixing block and connected with the mounting plate, and the mounting plate is movably connected with the first storage plate; the fixed plate is fixedly arranged above the first object placing plate, and the seat is fixed on the upper surface of the fixed plate.

Furthermore, a cavity is formed in the lower surface of the fixing plate, a second object placing plate transversely penetrates through the cavity, a fixing rod is fixed at the bottom of the second object placing plate, and the fixing rod is connected to the top of the first object placing plate; a limiting groove is formed in the edge of the cavity on the fixing plate; the middle of the second object placing plate is provided with an extrusion plate, the end of the extrusion plate is connected with two extrusion blocks, the bottom of each extrusion block is fixed with a fixture block, the outer side of each fixture block is provided with a chute, a second spring is arranged inside each chute, and the fixture block can slide in the chute; the second is put and is equipped with the connecting plate on the thing board, and the connecting plate is located the both sides of extrusion piece, the outer wall of connecting plate transversely is fixed with the restriction pole, and the outside nestification of restriction pole has the third spring, and the thing board setting is put in the second to the outer end protrusion of restriction pole, the outer end of restriction pole with the restriction groove corresponds the matching setting.

Furthermore, the extrusion plate is arranged in a diamond shape, and the end head of the extrusion plate is tightly attached to the extrusion block; the limiting rods are symmetrically arranged on the axis of the extrusion block, and the extrusion block is in a trapezoidal arrangement; and the limiting rod and the second object placing plate form a sliding installation structure through a third spring, and the outer diameter of the limiting rod and the limiting groove are arranged on the same horizontal plane.

Furthermore, the mounting plate is mounted inside the lower portion of the first object placing plate, the mounting plate and the first object placing plate are movably connected through a sandwich structure of the second fixing block, the second air bag and the second fixing block, and the two second fixing blocks are fixed on the outer side of the mounting plate and the inner wall of the first object placing plate respectively.

Furthermore, a sliding installation structure is formed between the installation plate and the first object placing plate through the object placing groove, and the second air bag is fixed on the side of the installation plate at an equal angle.

Further, the upper surface of seat support is provided with the baffle, and the arm backing plate is installed at the top of baffle, the last fixed surface of arm backing plate has the arm protection pad, and is adhesive connection between arm protection pad and the arm backing plate, the end department of seat support is provided with the back backup plate, and the inner wall of back backup plate is fixed with the back protection pad.

Further, the vertical rod is symmetrically arranged relative to the axis of the sleeve, and a lifting installation structure is formed between the vertical rod and the sleeve through the first air bag.

Furthermore, the cross rods are distributed in the bottom plate at equal angles, and a sliding installation structure is formed between the cross rods and the sliding blocks through first springs.

Furthermore, a lifting installation structure is formed between the first object placing plate and the bottom plate, and the first object placing plate and the bottom plate are arranged in parallel.

Furthermore, the support rod is arranged in an inclined manner, and a rotating installation structure is formed between the support rod and the sliding block through a rotating shaft.

The advantages of the invention are as follows:

the extended outdoor automobile back-row seat with the jolting prevention function has the advantages that the overall cushioning effect is good in the riding process, different functional areas can be conveniently detached, the overhauling difficulty is reduced, and the extended outdoor automobile back-row seat with the jolting prevention function has the following specific advantages:

1. when a passenger sits above the chair seat and is bumpy, the fixed plate can move downwards under the action of pressure and vibration, when the fixed plate moves downwards, the fixed plate can drive the first object placing plate to move downwards through the fixed rod, then the first object placing plate can drive the vertical rod to move downwards in the sleeve, when the vertical rod moves, pressure can be caused on the first air bag, then the first air bag is influenced by the pressure to reduce the volume and increase the air pressure, and an upward repulsive action force can be generated, at the moment, the vertical rod can be driven to jack upwards, meanwhile, the angle of the support rod can be changed through the rotating shaft under the influence of the extruded action force, after the angle of the support rod is changed, the slide block can be driven to slide on the transverse rod, finally, the first spring can drive the slide block to reset, and then the first object placing plate can be driven to reset, so that the bumpy action force generated when the chair, the comfort of passengers is improved;

2. when the chair seat is used and generates acting force swinging leftwards and rightwards, the first object placing plate can slide outside the mounting plate, and the object placing groove is formed in the mounting plate and is fixedly clamped with the first object placing plate, so that the mounting plate can move in the object placing groove after moving, and the second air bags are arranged in the object placing groove at equal angles, so that the second air bags can be extruded after the mounting plate moves, repulsive acting force is generated by the second air bags, the acting force of the device swinging in the horizontal direction during use is reduced, and the stability of passengers during riding is improved;

3. when the whole of back row seat needed the split to overhaul, it is manual to rotate the stripper plate, the stripper plate is not received by extruded effort by the extrusion piece that the symmetry set up after rotating, the second spring can drive fixture block and extrusion piece through the spout and reset this moment, with this can make the restriction pole not receive by extruded effort, the third spring can drive the restriction pole and reset when the restriction pole does not receive pressure, and make the restriction pole break away from the inside in restriction groove, so that carry out the split to fixed plate and bottom plate, thereby can overhaul the different functional areas of back row seat.

Drawings

FIG. 1 is a schematic view of the overall front view structure of the present invention;

FIG. 2 is a schematic top view of the base plate of the present invention;

FIG. 3 is a schematic view of a connection structure of a first object placing plate and a mounting plate according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is a schematic bottom view of the second object placing plate according to the present invention;

fig. 6 is a schematic view of a connection structure of the second object placing plate and the limiting rod according to the present invention.

In the figure: 1. a base plate; 2. a sleeve; 3. a vertical rod; 4. a first fixed block; 5. a first air bag; 6. a first object placing plate; 7. a vertical plate; 8. a cross bar; 9. a slider; 10. a first spring; 11. a rotating shaft; 12. a support bar; 13. a storage groove; 14. a second fixed block; 15. a second air bag; 16. mounting a plate; 17. a fixing plate; 18. a second storage plate; 19. fixing the rod; 20. a pressing plate; 21. extruding the block; 22. a clamping block; 23. a chute; 24. a second spring; 25. a connecting plate; 26. a restraining bar; 27. a third spring; 28. a limiting groove; 29. a chair seat; 30. a baffle plate; 31. an arm pad; 32. an arm pad; 33. a back backup plate; 34. a backrest protection pad.

Detailed Description

The invention is further described with reference to the following figures and examples,

referring to fig. 1 to 6, the extended outdoor rear seat with a bumping prevention function of the present embodiment includes a bottom plate 1, a sleeve 2, a vertical rod 3, a first fixing block 4, a first airbag 5, a first object board 6, a vertical plate 7, a cross rod 8, a slider 9, a first spring 10, a rotating shaft 11, a support rod 12, an object slot 13, a second fixing block 14, a second airbag 15, a mounting plate 16, a fixing plate 17, a second object board 18, a fixing rod 19, a pressing plate 20, a pressing block 21, a fixture block 22, a sliding slot 23, a second spring 24, a connecting plate 25, a limiting rod 26, a third spring 27, a limiting slot 28, a seat 29, a baffle 30, an arm cushion plate 31, an arm cushion 32, a back rest plate 33 and a back cushion 34;

wherein, the vertical sleeve 2 that is fixed with in intermediate position of bottom plate 1, and the inside of sleeve 2 runs through there is montant 3 to the top of montant 3 is provided with first thing board 6 of putting, and the inside of sleeve 2 is provided with two first fixed blocks 4 of placing from top to bottom, and is fixed with first gasbag 5 between two first fixed blocks 4, and is preferred, is adhesive connection between first gasbag 5 and the first fixed block 4.

A vertical plate 7 is fixed on the upper surface of the bottom plate 1, a cross rod 8 is fixed on the side of the vertical plate 7, the cross rod 8 is respectively connected with the vertical plate 7 and the side of the floor 1, a sliding block 9 is nested in the middle of the cross rod 8, two sides of the sliding block 9 are connected with first springs 10, and the sliding block 9 can drive the first springs 10 to be extruded and deformed when sliding on the cross rod 8; and the upper surface of the slide block 9 is provided with a rotating shaft 11, and the outer side of the rotating shaft 11 is connected with a supporting rod 12.

The inside reservation of first thing board 6 has puts thing groove 13, and the inner wall of first thing board 6 of putting is fixed with second fixed block 14, and the end department of second fixed block 14 is connected with second gasbag 15, fixed plate 17 sets up in the top of first thing board 6 of putting, and the internally mounted of first thing board 6 has mounting panel 16, and be swing joint between mounting panel 16 and the first thing board 6 of putting (promptly as shown in fig. 3 and fig. 1, mounting panel 16 installs inside the below of first thing board 6 of putting, through the sandwich structure swing joint of second fixed block 14-second gasbag 15-second fixed block 14 between the two, two second fixed blocks 14 are fixed respectively in the outside of mounting panel 16 and the first thing board 6 inner wall of putting).

A cavity is formed in the fixed plate 17, a second object placing plate 18 transversely penetrates through the cavity, a fixed rod 19 is fixed at the bottom of the second object placing plate 18, the fixed rod 19 is connected to the top of the first object placing plate 6, a limiting groove 28 is formed in the fixed plate 17, an extrusion plate 20 is arranged in the middle of the second object placing plate 18, two extrusion blocks 21 are connected to the end of the extrusion plate 20, a clamping block 22 is fixed at the bottom of the extrusion block 21, a sliding groove 23 is formed in the outer side of the clamping block 22, a second spring 24 is arranged in the sliding groove 23, and the clamping block 22 can slide in the sliding groove 23; the connecting plate 25 is arranged inside the second object placing plate 18, the connecting plate 25 is located on two sides of the extrusion block 21, the limiting rod 26 is transversely fixed on the outer wall of the connecting plate 25, the third spring 27 is nested on the outer side of the limiting rod 26, the outer end of the limiting rod 26 protrudes out of the second object placing plate 18, and the outer end of the limiting rod 26 is correspondingly matched with the limiting groove 28.

Seat support 29 is fixed in the upper surface of fixed plate 17, and the upper surface of seat support 29 is provided with baffle 30 to arm backing plate 31 is installed at the top of baffle 30, and the last fixed surface of arm backing plate 31 has arm pad 32, and is adhesive connection between arm pad 32 and the arm backing plate 31, and the end department of seat support 29 is provided with back backup plate 33, and the inner wall of back backup plate 33 is fixed with back pad 34.

The vertical rods 3 are symmetrically arranged about the axis of the sleeve 2, a lifting mounting structure is formed between the vertical rods 3 and the sleeve 2 through the first air bags 5, when the seat 29 moves up and down under the influence of bumpy acting force, the vertical rods 3 can generate pressure or tensile acting force on the first air bags 5, and at the moment, the first air bags 5 can drive the vertical rods 3 to reset under the influence of rebounding acting force, so that the overall bumpy force can be reduced, and the stability of the seat 29 in use is improved;

a lifting installation structure is formed between the first object placing plate 6 and the bottom plate 1, and the first object placing plate 6 and the bottom plate 1 are arranged in parallel, so that the situation that the seat 29 is inclined can be ensured when the chair is used, and the installation stability is improved;

the cross rods 8 are distributed in the bottom plate 1 at equal angles, a sliding installation structure is formed between the cross rods 8 and the sliding blocks 9 through the first springs 10, the cross rods 8 distributed at equal angles can be used for installing the sliding blocks 9, when the first object placing plate 6 moves downwards, the angle of the supporting rod 12 changes, the sliding blocks 9 can be driven to slide, when the sliding blocks 9 slide, the first springs 10 can be stretched or extruded, and the repulsive force of the first springs 10 can drive the sliding blocks 9 to reset;

the supporting rod 12 is arranged in an inclined manner, a rotating installation structure is formed between the supporting rod 12 and the sliding block 9 through the rotating shaft 11, the supporting rod 12 arranged in the inclined manner can change the angle through the rotating shaft 11 when being influenced by pressure, and the connecting through the rotating shaft 11 can not be broken;

a sliding installation structure is formed between the installation plate 16 and the first object placing plate 6 through the object placing groove 13, the second air bags 15 are fixed on the sides of the installation plate 16 at equal angles, when the seat 29 shakes left and right, the first object placing plate 6 can move above the installation plate 16, and the second air bags 15 distributed at equal angles drive the seat to reset, so that the cushioning effect can be achieved, and the stability is improved;

the extrusion plate 20 is arranged in a diamond shape, the end of the extrusion plate 20 is tightly attached to the extrusion block 21, and the extrusion plate 20 arranged in the diamond shape can eliminate the acting force for extruding the extrusion block 21 after being rotated;

limiting rod 26 is provided with 2 about the axis symmetry of extrusion piece 21, and the trapezoidal setting of adoption of extrusion piece 21, constitute the slidable mounting structure through third spring 27 between limiting rod 26 and the second thing board 18, and the external diameter of limiting rod 26 and the same horizontal plane setting of restriction groove 28 department, when extrusion piece 21 does not receive by extruded effort, second spring 24 can drive extrusion piece 21 and reset, then the limiting rod 26 of symmetry setting does not receive by extruded power, can make limiting rod 26 break away from the inside of restriction groove 28, thereby can split fixed plate 17.

The working principle of the outdoor car back row seat of expansion type with prevent jolting function of this embodiment is as follows:

when a passenger sits on the seat 29 and receives bumpy acting force, the fixed plate 17 can move downwards under the influence of the acting force of pressure and vibration, when the fixed plate 17 moves downwards, the fixed plate 17 can drive the first object placing plate 6 to move downwards through the fixed rod 19, then the first object placing plate 6 can drive the vertical rod 3 to move downwards in the sleeve 2, when the vertical rod 3 moves, pressure can be caused on the first air bag 5, then the volume of the first air bag 5 is reduced under the influence of the pressure and the air pressure is increased, upward repulsive acting force can be generated, at the moment, the vertical rod 3 can be driven to jack upwards, meanwhile, the supporting rod 12 can change the angle through the rotating shaft 11 under the influence of the extrusion acting force, after the angle of the supporting rod 12 is changed, the sliding block 9 can be driven to slide on the cross rod 8, and finally, the first spring 10 can drive the sliding block 9 to reset, so as to drive the first, thereby reducing the force of the seat 29 that would otherwise be jarring during use.

When the passenger receives the power of jolting about, fixed plate 17 can drive first thing board 6 and slide in the outside of mounting panel 16, can cause pressure or pulling force to the second gasbag 15 of difference when first thing board 6 is interactive, because the inside of the first thing board 6 of putting of angular distribution such as second gasbag 15, consequently can reset first thing board 6 that puts when second gasbag 15 receives external force is tensile, the great condition of effort of rocking can not appear, it needs to explain here, wholly play the function of jolting, can reduce the external force injury that the passenger received when taking, can make passenger and seat support 29 remove simultaneously, and drive the reset after being bradyseism, can avoid receiving the transient effort great, with the condition that the passenger was thrown away.

When the device needs to be overhauled, the extrusion plate 20 is manually rotated, the extrusion blocks 21 symmetrically arranged after the extrusion plate 20 is rotated are free from the extruded acting force, at the moment, the second spring 24 can drive the fixture block 22 and the extrusion block 21 to reset through the chute 23, so that the limiting rod 26 is free from the extruded acting force, when the limiting rod 26 is not under pressure, the third spring 27 can drive the limiting rod 26 to reset, and the limiting rod 26 is separated from the inside of the limiting groove 28, so that the fixing plate 17 and the bottom plate 1 can be detached, different functional areas of a back-row seat can be overhauled, after the overhaul is finished, the fixing plate 17 is nested on the outer side of the second object placing plate 18, and the extrusion plate 20 is rotated again, the extrusion block 21 can be driven to move outwards after the extrusion block 20 rotates, the limiting rod 26 can be driven to move when the extrusion block 21 moves, and penetrates through the inside of the limiting groove 28, thereby enabling the complete installation of the whole.

The above description is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.