阅读说明：本技术 一种单独可调双人副驾座椅 (Individual adjustable double-person vice-driving seat ) 是由 夏炜 闵伍保 童磊 邓小勇 于 2021-07-30 设计创作，主要内容包括：本发明公开了一种单独可调双人副驾座椅,包括左靠背面套总成,为座椅的外框结构,所述左靠背面套总成的内部嵌入连接有左背靠海绵总成；左靠背骨架总成,位于所述左背靠海绵总成内部,所述左靠背骨架总成左下端设置左调节盘,所述左调节盘的外表面连接有左调节器手柄；头枕芯,位于所述左靠背骨架总成顶端,所述头枕芯内部设置有头枕芯,所述头枕门面套总成头枕芯外表面设置有,所述头枕芯关于左靠背骨架总成中心点对称设置有司机左带锁头枕插销和司机右不带锁头枕插销。该单独可调双人副驾座椅,双人副司机座椅靠背设计为单独靠背可调节式,两靠背能独立调节,分别通过对应连接的调节手柄进行调节,两者不相互影响。(The invention discloses an independently adjustable double-person assistant driver seat, which comprises a left backrest surface sleeve assembly, wherein the left backrest surface sleeve assembly is of an outer frame structure of the seat, and a left backrest sponge assembly is embedded and connected in the left backrest surface sleeve assembly; the left backrest framework assembly is positioned inside the left backrest sponge assembly, a left adjusting disc is arranged at the left lower end of the left backrest framework assembly, and the outer surface of the left adjusting disc is connected with a left adjuster handle; the headrest core is located left side back skeleton assembly top, the inside headrest core that is provided with of headrest core, headrest door pocket assembly headrest core surface is provided with, the headrest core is provided with the lock headrest bolt of taking on a driver left side and the driver right side does not take the tapered end pillow bolt about left back skeleton assembly central point symmetry. This vice chair of driving of double adjustable alone, the vice driver seat back of double chair design are independent back adjustable, and two backrests can independently be adjusted, adjust through the adjustment handle who corresponds the connection respectively, and both do not influence each other.)

1. An individually adjustable tandem seat, comprising:

the left backrest surface sleeve assembly (1) is of an outer frame structure of a seat, and a left backrest sponge assembly (2) is embedded and connected in the left backrest surface sleeve assembly (1);

the left backrest frame assembly (5) is positioned inside the left backrest sponge assembly (2), a left adjusting disc (25) is arranged at the left lower end of the left backrest frame assembly (5), and the outer surface of the left adjusting disc (25) is connected with a left adjuster handle (31);

the headrest core (3) is positioned at the top end of the left backrest framework assembly (5), the headrest core (3) is arranged in the headrest core (3), the headrest door cover assembly (4) is arranged on the outer surface of the headrest core (3), and a left headrest locking bolt (14) of a driver and a right headrest locking bolt (15) which is not used by the driver are symmetrically arranged on the headrest core (3) relative to the center of the left backrest framework assembly (5);

the right backrest framework assembly (16) is positioned at one end of the left backrest framework assembly (5), a right backrest sponge assembly (17) is arranged on the outer surface of the right backrest framework assembly (16), and a right backrest surface sleeve assembly (18) is arranged on the outer surface of the right backrest sponge assembly (17);

the seat cushion frame assembly (26) is positioned at the bottom ends of the left backrest frame assembly (5) and the right backrest frame assembly (16), a double-pair regulator assembly (19) is arranged at the middle end of the seat cushion frame assembly (26), safety belt lock catches (24) are symmetrically arranged at the left end and the right end of the seat cushion frame assembly (26), and a first seat cushion surface sleeve assembly (32) and a second seat cushion surface sleeve assembly (33) are respectively arranged on the top surface of the seat cushion frame assembly (26);

the right adjusting disc (20) is located on the outer surface of one end of the right backrest framework assembly (16), an inner hexagonal socket head cap screw (22) is connected inside the right adjusting disc (20), the outer surface of the inner hexagonal socket head cap screw (22) is connected with a first spring washer (7) and an I-shaped hexagon nut (28) respectively, the other end of the inner hexagonal socket head cap screw (22) is connected with a shifting block (37), a transmission rod (36) is connected inside the shifting block (37), and one end of the transmission rod (36) is connected with a double-auxiliary adjuster assembly (19);

double bikini coiler (10) is located the upper left end of left side back skeleton assembly (5), double bikini coiler (10) surface is provided with safety belt outer shroud (12), the front end of safety belt outer shroud (12) is connected with blanking cover (11) before the safety belt, the rear end of double bikini coiler (10) is connected with safety belt rear shroud (13), the one end of double bikini coiler (10) is connected with down safety belt via hole (8).

2. The individually adjustable double passenger seat according to claim 1, wherein: the utility model discloses a lock pillow, including driver's left side area lock headrest bolt (14) and driver's right side do not take tapered end pillow bolt (15) and left back skeleton assembly (5) and right back skeleton assembly (16) to constitute sliding construction, driver's left side area lock headrest bolt (14) and driver's right side do not take tapered end pillow bolt (15) the other end and headrest (3) interconnect, driver's left side area lock headrest bolt (14) respectively with headrest (3) and left back skeleton assembly (5) and right back skeleton assembly (16) swing joint.

3. The individually adjustable double passenger seat according to claim 1, wherein: double three-point formula coiler (10) respectively with safety belt hasp (24) and lower safety belt via hole (8) interconnect, lower safety belt via hole (8) be sliding connection with cushion skeleton assembly (26), lower safety belt via hole (8) length is less than safety belt hasp (24), lower safety belt via hole (8) are the same with safety belt hasp (24) quantity, safety belt hasp (24) internal thread is connected with safety belt bolt (27).

4. The individually adjustable double passenger seat according to claim 1, wherein: the double-auxiliary-adjuster assembly (19) is internally connected with a shaft rod (30), two ends of the shaft rod (30) are respectively and rotatably connected with the left backrest framework assembly (5) and the right backrest framework assembly (16), the double-auxiliary-adjuster assembly (19) is mutually connected with the right adjuster handle (21), and the double-auxiliary-adjuster assembly (19) is movably connected with the first spring washer (7).

5. The individually adjustable double passenger seat according to claim 1, wherein: left side regulator handle (31) are located the opposition of pair regulator assembly (19), the one end and transfer line (36) laminating sliding connection of left side regulator handle (31), the left and right ends symmetry of transfer line (36) is provided with shifting block (37), shifting block (37) surface swing joint has hexagon socket head cap screw (6), the one end of hexagon socket head cap screw (6) is connected with second spring washer (29), the one end of hexagon socket head cap screw (6) is connected with hexagon flange face lock nut (35) and left back skeleton assembly (5).

6. The individually adjustable double passenger seat according to claim 1, wherein: double three-point formula coiler (10) inside is connected with cross recess pan head self-tapping screw (9), two vice plastics pintle (34) and cross recess pan head self-tapping locking screw (23) respectively, cross recess pan head self-tapping screw (9) and cross recess pan head self-tapping locking screw (23) and safety belt front closure (11) and safety belt rear shroud (13) interconnect.

7. The individually adjustable double passenger seat according to claim 1, wherein: the length of left side back skeleton assembly (5) is greater than right back skeleton assembly (16) length, left side back skeleton assembly (5) all are connected for rotating with cushion skeleton assembly (26) with right back skeleton assembly (16).

Technical Field

The invention relates to the technical field of automobile parts, in particular to an independently adjustable double-person assistant driver seat.

Background

Along with the continuous development of automotive technology, the interior product of car is more and more rapid, and the passenger requires more and more highly to taking advantage of the travelling comfort in the car, and traditional passenger seat is single, and when some special vehicles need double supplementary main driving, traditional seat can't provide effectual manned space, has caused the not convenient for limitation that the vehicle went.

For example, application number is CN203172482U novel double back of seat skeleton of driver, to this seat device, it includes the headrest board, the return bend closes the piece, violently manage down, the angle modulation subassembly, left headrest, right headrest, one side is provided with left headrest on the headrest board, one side of left headrest is provided with right headrest, the return bend closes the piece setting around the seat support body, and be provided with down violently the pipe at the lower extreme of return bend closes the piece, drive mainly with vice seat design structure as an organic whole, can save the car inner space.

However, although the fixed type seat of the seat backrest can be used by two persons, the space in the vehicle is saved, the seat backrest can be used for a long time due to the fact that the angle of the backrest cannot be adjusted, the seat backrest is very uncomfortable, the riding comfort of a passenger is seriously affected, the fixed type seat of the backrest in the past can not meet the market demand more and more, the seat backrest can be adjusted independently to improve the riding comfort, and the demands of the passenger on different angles when the seat backrest is used are met.

Disclosure of Invention

The invention aims to provide a single adjustable double-person secondary driving seat, which solves the problems that the angle of a backrest cannot be adjusted, the seat is very uncomfortable after being taken for a long time, and the riding comfort of passengers is seriously influenced in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an individually adjustable double tandem seat comprising:

the left backrest surface sleeve assembly is of an outer frame structure of the seat, and a left backrest sponge assembly is embedded and connected in the left backrest surface sleeve assembly;

the left backrest framework assembly is positioned inside the left backrest sponge assembly, a left adjusting disc is arranged at the left lower end of the left backrest framework assembly, and the outer surface of the left adjusting disc is connected with a left adjuster handle;

the headrest core is positioned at the top end of the left backrest framework assembly, the headrest core is arranged in the headrest core, the outer surface of the headrest core of the headrest door cover assembly is provided with the headrest core, and the headrest core is symmetrically provided with a headrest bolt with a lock on the left of a driver and a headrest bolt without a lock on the right of the driver about the center point of the left backrest framework assembly;

the right backrest framework assembly is positioned at one end of the left backrest framework assembly, a right backrest sponge assembly is arranged on the outer surface of the right backrest framework assembly, and a right backrest surface sleeve assembly is arranged on the outer surface of the right backrest sponge assembly;

the cushion frame assembly is positioned at the bottom ends of the left backrest frame assembly and the right backrest frame assembly, the middle end of the cushion frame assembly is provided with a double-pair regulator assembly, the left end and the right end of the cushion frame assembly are symmetrically provided with safety belt buckles, and the top surface of the cushion frame assembly is respectively provided with a first cushion surface sleeve assembly and a second cushion surface sleeve assembly;

the right adjusting disc is positioned on the outer surface of one end of the right backrest framework assembly, an inner hexagonal socket head cap screw is connected inside the right adjusting disc, the outer surface of the inner hexagonal socket head cap screw is respectively connected with a first spring washer and an I-shaped hexagon nut, the other end of the inner hexagonal socket head cap screw is connected with a shifting block, a transmission rod is connected inside the shifting block, and one end of the transmission rod is connected with a double-auxiliary adjuster assembly;

double bikini coiler is located the upper left end of left side back skeleton assembly, double bikini coiler surface is provided with the safety belt outer shroud, the front end of safety belt outer shroud is connected with blanking cover before the safety belt, the rear end of double bikini coiler is connected with the safety belt rear cover, the one end of double bikini coiler is connected with down the safety belt via hole.

According to the preferable technical scheme, the left lock-equipped headrest bolt of the driver and the right lock-free headrest bolt of the driver form a sliding structure with the left backrest framework assembly and the right backrest framework assembly, the other ends of the left lock-equipped headrest bolt of the driver and the right lock-free headrest bolt of the driver are connected with the headrest core, and the left lock-equipped headrest bolt of the driver is movably connected with the headrest core, the left backrest framework assembly and the right backrest framework assembly respectively.

Adopt above-mentioned technical scheme, the driver left side is taken the lock headrest bolt and the driver right side does not take the tapered end pillow bolt to slide in left back skeleton assembly and right back skeleton assembly, can adjust the holistic height of headrest to under the rotation of the left side of driver lock headrest bolt, can block inside left back skeleton assembly or right back skeleton assembly, thereby fix the whole height of headrest.

As a preferred technical scheme, the double three-point type retractor is respectively connected with a safety belt lock catch and a lower safety belt through hole, the lower safety belt through hole is in sliding connection with the cushion framework assembly, the length of the lower safety belt through hole is smaller than that of the safety belt lock catch, the number of the lower safety belt through holes is the same as that of the safety belt lock catches, and a safety belt bolt is in threaded connection with the interior of the safety belt lock catch.

Adopt above-mentioned technical scheme, double bikini coiler is walked around lower safety belt via hole and is run through the safety belt hasp, and the inside safety belt bolt locking structure that is provided with of safety belt hasp locks the output of double bikini coiler fixedly, and the safety belt via hole can slide along cushion skeleton assembly surface down simultaneously, can adjust down safety belt via hole current height, and the safety belt via hole can be hidden under the messenger, avoids the protrusion to influence the comfort.

As a preferred technical scheme, a shaft lever is connected inside the double-auxiliary regulator assembly, two ends of the shaft lever are respectively and rotatably connected with the left backrest framework assembly and the right backrest framework assembly, the double-auxiliary regulator assembly is connected with the right regulator handle, and the double-auxiliary regulator assembly is movably connected with the first spring washer.

Adopt above-mentioned technical scheme, the main regulation auxiliary structure of pair regulator assembly to through the axostylus axostyle respectively with left back skeleton assembly and right back skeleton assembly interconnect, left back skeleton assembly and right back skeleton assembly use the axostylus axostyle to rotate as the central point, the angle of two seats of regulation that can be fine, axostylus axostyle and right regulator handle lug connection, the right regulating disk of right back skeleton assembly one end can be controlled, thereby the realization is spacing to right back skeleton assembly angle.

According to the preferable technical scheme, the left regulator handle is located on the opposite face of the double-pair regulator assembly, one end of the left regulator handle is in fit sliding connection with the transmission rod, the left end and the right end of the transmission rod are symmetrically provided with shifting blocks, the outer surface of each shifting block is movably connected with an inner hexagonal flower-shaped pan head screw, one end of each inner hexagonal flower-shaped pan head screw is connected with a second spring washer, and one end of each inner hexagonal flower-shaped pan head screw is connected with a hexagonal flange face locking nut and a left backrest framework assembly.

By adopting the technical scheme, the left adjuster handle rotates to drive the transmission rod to rotate synchronously, the shifting block at one end of the transmission rod is in contact with the hexagon socket head cap screw, the hexagon socket head cap head cap screw is separated from the left backrest framework assembly, the limit fixation of the left backrest framework assembly is released, the left backrest framework assembly can be conveniently adjusted in angle rotation, and therefore the adjustment flexibility is improved.

According to the preferable technical scheme, a cross-recessed pan head self-tapping screw, a double-pair plastic fastener and a cross-recessed pan head self-tapping locking screw are respectively connected inside the double three-point retractor, and the cross-recessed pan head self-tapping screw and the cross-recessed pan head self-tapping locking screw are mutually connected with a safety belt front blanking cover and a safety belt rear cover.

Adopt above-mentioned technical scheme, double bivalve coiler is inside to be provided with cross recess pan head self-tapping screw, two vice plastics cramps and cross recess pan head self-tapping locking screw, has locking and fixed effect respectively to be convenient for fix double bivalve coiler at left back skeleton assembly surface, thereby be convenient for install and dismantle double bivalve coiler, increased holistic mobility.

As a preferred technical scheme, the length of the left backrest framework assembly is larger than that of the right backrest framework assembly, and the left backrest framework assembly and the right backrest framework assembly are in rotary connection with the cushion framework assembly.

Adopt above-mentioned technical scheme, left side back skeleton assembly carries out angle modulation with right back skeleton assembly length along cushion skeleton assembly, and wherein angle modulation's maximum limit is in to adjustable alone has reduced the restriction of fixed telephone to double operation, thereby has increased holistic practicality.

Compared with the prior art, the invention has the beneficial effects that: this single adjustable double passenger seat:

1. double vice driver seat back design is independent back adjustable, two backs can independently be adjusted, adjust handle through corresponding the connection respectively, both do not influence each other, and handle all is connected with the pan head screw that corresponds, remove or extrude the pan head screw through the extrusion, not only be convenient for adjust the angle of seat, still be convenient for carry on spacing fixed the angle of seat current while, also can reset through spring and packing ring, the flexibility of control has been increased, it is removable at seat sponge and face cover simultaneously, be convenient for regularly dismantle the face cover and wash, the holistic cleanliness of seat has been increased, the holistic mobility of seat has also been improved.

2. The adjusting discs are arranged at two ends of the corresponding seat, the adjusting discs are provided with a plurality of limit point structures, the angle of the back of the seat can maximally reach 160 degrees, different angle requirements of a passenger in taking can be met, stress points of the seat can be increased simultaneously, the phenomenon that the stress of the back of the seat is uneven and the back of the seat is disjointed is avoided, the overall safety of the seat is improved, the connection among a plurality of transmission structures is stable, the convenience in adjusting is also improved, and the overall practicability is improved.

Drawings

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

FIG. 2 is a schematic overall side view of the present invention;

FIG. 3 is a schematic view of a disassembled structure of the left backrest frame assembly of the present invention;

FIG. 4 is a schematic view of a detachable structure of a double three-point retractor part according to the invention;

FIG. 5 is a schematic view of a disassembled structure of the right back frame assembly of the present invention;

FIG. 6 is a schematic view of a disassembled structure of the dual sub-regulator assembly of the present invention.

Fig. 7 is a schematic view of a detachable structure of a cushion frame assembly according to the present invention.

FIG. 8 is a schematic view of the first and second seat cushion cover assemblies of the present invention with parts separated.

FIG. 9 is a schematic side view of the interior of the drive rod and paddle of the present invention.

In the figure: 1. a left back cover assembly; 2. a left backrest sponge assembly; 3. a pillow core; 4. a headrest door facing assembly; 5. a left back frame assembly; 6. a hexagon socket head cap screw; 7. a first spring washer; 8. a lower safety belt through hole; 9. a cross-recessed pan head self-tapping screw; 10. a double three-point retractor; 11. a safety belt front blocking cover; 12. a seat belt outer cover; 13. a seat belt rear cover; 14. the left side of the driver is provided with a lock headrest bolt; 15. the right side of the driver is not provided with a lock head pillow bolt; 16. a right back frame assembly; 17. a right back sponge assembly; 18. a right back panel assembly; 19. a dual-pair regulator assembly; 20. a right adjustment dial; 21. a right adjuster handle; 22. a socket head cap screw; 23. a cross-recessed pan head self-tapping locking screw; 24. a safety belt lock catch; 25. a left adjustment dial; 26. a cushion frame assembly; 27. a seat belt bolt; 28. an I-shaped hexagon nut; 29. a second spring washer; 30. a shaft lever; 31. a left adjuster handle; 32. a first seat cushion face cover assembly; 33. a second seat cushion surface sleeve assembly; 34. double pairs of plastic fasteners; 35. a hexagonal flange surface locking nut; 36. a transmission rod; 37. and (5) shifting blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an individually adjustable double tandem seat comprising:

the left backrest surface sleeve assembly 1 is of an outer frame structure of the seat, and a left backrest sponge assembly 2 is embedded and connected in the left backrest surface sleeve assembly 1; the left backrest framework assembly 5 is positioned inside the left backrest sponge assembly 2, the left lower end of the left backrest framework assembly 5 is provided with a left adjusting disc 25, and the outer surface of the left adjusting disc 25 is connected with a left adjuster handle 31; the headrest core 3 is positioned at the top end of the left backrest framework assembly 5, the headrest core 3 is arranged in the headrest core 3, the outer surface of the headrest core 3 is arranged in the headrest door cover assembly 4, and a left headrest bolt 14 with a lock for a driver and a right headrest bolt 15 without the lock for the driver are symmetrically arranged on the headrest core 3 relative to the center of the left backrest framework assembly 5; the right backrest framework assembly 16 is positioned at one end of the left backrest framework assembly 5, a right backrest sponge assembly 17 is arranged on the outer surface of the right backrest framework assembly 16, and a right backrest surface sleeve assembly 18 is arranged on the outer surface of the right backrest sponge assembly 17; the cushion framework assembly 26 is positioned at the bottom ends of the left backrest framework assembly 5 and the right backrest framework assembly 16, the middle end of the cushion framework assembly 26 is provided with a double-pair regulator assembly 19, the left end and the right end of the cushion framework assembly 26 are symmetrically provided with safety belt buckles 24, and the top surface of the cushion framework assembly 26 is respectively provided with a first cushion surface sleeve assembly 32 and a second cushion surface sleeve assembly 33; the right adjusting disc 20 is positioned on the outer surface of one end of the right backrest framework assembly 16, an inner hexagonal socket head cap screw 22 is connected inside the right adjusting disc 20, the outer surface of the inner hexagonal socket head cap screw 22 is respectively connected with a first spring washer 7 and an I-shaped hexagon nut 28, the other end of the inner hexagonal socket head cap screw 22 is connected with a shifting block 37, a transmission rod 36 is connected inside the shifting block 37, and one end of the transmission rod 36 is connected with the double-auxiliary adjuster assembly 19; double three-point coiler 10 is located the upper left end of left back skeleton assembly 5, and double three-point coiler 10 surface is provided with safety belt outer shroud 12, and the front end of safety belt outer shroud 12 is connected with blanking cover 11 before the safety belt, and the rear end of double three-point coiler 10 is connected with safety belt rear shroud 13, and the one end of double three-point coiler 10 is connected with down safety belt via hole 8.

A left lock head pillow bolt 14 of a driver and a right lock head pillow bolt 15 of the driver form a sliding structure with a left backrest framework assembly 5 and a right backrest framework assembly 16, the other ends of the left lock head pillow bolt 14 of the driver and the right lock head pillow bolt 15 of the driver are connected with a head pillow core 3, and the left lock head pillow bolt 14 of the driver is movably connected with the head pillow core 3, the left backrest framework assembly 5 and the right backrest framework assembly 16 respectively; the driver left side is taken lock headrest bolt 14 and the driver right side to take tapered end headrest bolt 15 to slide in left back skeleton assembly 5 and right back skeleton assembly 16 is inside, can adjust the holistic height of headrest 3 to under the rotation of driver left side area lock headrest bolt 14, can block in left back skeleton assembly 5 or right back skeleton assembly 16 inside, thereby fix the whole height of headrest 3.

The double three-point type retractor 10 is respectively connected with a safety belt lock catch 24 and a lower safety belt through hole 8, the lower safety belt through hole 8 is in sliding connection with a cushion framework assembly 26, the length of the lower safety belt through hole 8 is smaller than that of the safety belt lock catch 24, the number of the lower safety belt through holes 8 is the same as that of the safety belt lock catches 24, and a safety belt bolt 27 is in threaded connection with the inner part of the safety belt lock catch 24; double three-point coiler 10 is walked around lower safety belt via hole 8 and is run through safety belt hasp 24, and safety belt hasp 24 inside is provided with safety belt bolt 27 locking structure, locks fixedly to double three-point coiler 10's output, and safety belt via hole 8 can slide along 26 surfaces of cushion skeleton assembly simultaneously down, can adjust down safety belt via hole 8 current height, makes lower safety belt via hole 8 can hide, avoids the protrusion to influence the comfort.

A shaft rod 30 is connected inside the double-auxiliary regulator assembly 19, two ends of the shaft rod 30 are respectively and rotatably connected with the left backrest framework assembly 5 and the right backrest framework assembly 16, the double-auxiliary regulator assembly 19 is mutually connected with the right regulator handle 21, and the double-auxiliary regulator assembly 19 is movably connected with the first spring washer 7; the double-auxiliary adjuster assembly 19 is a main adjusting auxiliary structure, and is respectively connected with the left backrest framework assembly 5 and the right backrest framework assembly 16 through the shaft rod 30, the left backrest framework assembly 5 and the right backrest framework assembly 16 rotate by taking the shaft rod 30 as a central point, the angle of two seats can be well adjusted, the shaft rod 30 is directly connected with the right adjuster handle 21, the right adjusting disc 20 at one end of the right backrest framework assembly 16 can be controlled, and the angle limitation of the right backrest framework assembly 16 is realized.

The left regulator handle 31 is positioned on the opposite surface of the double-pair regulator assembly 19, one end of the left regulator handle 31 is in fit sliding connection with the transmission rod 36, the left end and the right end of the transmission rod 36 are symmetrically provided with shifting blocks 37, the outer surface of the shifting block 37 is movably connected with an inner hexagonal flower-shaped pan head screw 6, one end of the inner hexagonal flower-shaped pan head screw 6 is connected with a second spring washer 29, and one end of the inner hexagonal flower-shaped pan head screw 6 is connected with a hexagonal flange surface locking nut 35 and a left backrest framework assembly 5; the left adjuster handle 31 rotates to drive the transmission rod 36 to rotate synchronously, the shifting block 37 at one end of the transmission rod 36 is in contact with the hexagon socket head cap screw 6, the hexagon socket head cap screw 6 is separated from the left backrest framework assembly 5, the limit fixation of the left backrest framework assembly 5 is released, the left backrest framework assembly 5 can be conveniently adjusted in angle rotation, and therefore the adjustment flexibility is improved.

The double three-point retractor 10 is internally connected with a cross-recessed pan head self-tapping screw 9, a double-pair plastic fastener 34 and a cross-recessed pan head self-tapping locking screw 23 respectively, and the cross-recessed pan head self-tapping screw 9 and the cross-recessed pan head self-tapping locking screw 23 are mutually connected with a safety belt front blanking cover 11 and a safety belt rear cover 13; double three-point coiler 10 is inside to be provided with cross recess pan head self-tapping screw 9, two vice plastics cramps 34 and cross recess pan head self-tapping locking screw 23, has locking and fixed effect respectively to be convenient for fix double three-point coiler 10 at left back skeleton assembly 5 surface, thereby be convenient for install and dismantle double three-point coiler 10, increased holistic mobility.

The length of the left backrest framework assembly 5 is greater than that of the right backrest framework assembly 16, and the left backrest framework assembly 5 and the right backrest framework assembly 16 are in rotating connection with the cushion framework assembly 26; left back skeleton assembly 5 and right back skeleton assembly 16 length carry out angle modulation along cushion skeleton assembly 26, and wherein angle modulation's maximum limit is at 150 to independently adjustable, reduced the restriction of seater to double operation, thereby increased holistic practicality.

The working principle is as follows: when the single adjustable double-person secondary driving seat is used, the prefabricated seat is placed at the secondary driving position of a vehicle, firstly, the adjustment is carried out according to the height of a headrest of a secondary driver, the headrest door cover assembly 4 at the top ends of a left backrest framework assembly 5 and a right backrest framework assembly 16 is respectively controlled, the headrest door cover assembly 4 slides along the insides of the left backrest framework assembly 5 and the right backrest framework assembly 16 through a left headrest bolt 14 with a lock head of the driver and a right headrest bolt 15 without the lock head of the driver, when the height adjustment is suitable, the left headrest bolt 14 with the lock head of the driver is rotated to be clamped with the left backrest framework assembly 5 and the right backrest framework assembly 16, the whole body of the headrest door cover assembly 4 is fixed, then the secondary driver can select and adjust the corresponding seat angle according to the self requirement, when the left backrest framework assembly 5 needs the angle adjustment, the left adjuster handle 31 is controlled to move the inner hexagonal disc head screw 6 correspondingly connected, the left adjuster handle 31 is released from the left backrest framework assembly 5 after the equal angle adjustment is finished, the left adjuster handle 31 and the hexagon socket head cap screw 6 are reset under the action of the second spring washer 29, the current position of the left backrest framework assembly 5 is limited and fixed, when the angle of the right backrest framework assembly 16 needs to be adjusted, the right adjuster handle 21 is controlled to drive the transmission rod 36 to synchronously rotate, the transmission rod 36 drives the shifting block 37 to be in contact with and extruded by the hexagon socket head cap screw 22, the hexagon socket head cap screw 22 is released from the inside of the right backrest framework assembly 16, then the right backrest framework assembly 16 is pressed backwards to adjust the angle, the right adjuster handle 21 is released after the completion, the hexagon socket head cap screw 22 is reset by the first spring washer 7, the limitation and fixation of the current angle of the right backrest framework assembly 16 are realized, wherein the left backrest framework assembly 5 rotates by taking the left adjusting disc 25 as a central point, the right backrest frame assembly 16 rotates with right angle modulation dish 20 as the central point, dresses the safety belt afterwards, and the safety belt passes safety belt via hole 8 and is connected with the safety belt hasp 24 that corresponds under double three-point formula coiler 10's effect, and wherein safety belt via hole 8 is flexible perpendicularly, is convenient for adjust the tensile while of safety belt, also reduces the uncomfortable sense that the projection of safety belt via hole 8 caused to holistic practicality has been increased.

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