阅读说明：本技术 一种整体可调双人副驾座椅 (Integral adjustable double-person vice-driver 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：本发明公开了一种整体可调双人副驾座椅,包括座椅本体,为设备主要的外框结构,所述座椅本体的外表面设置有座椅套,所述座椅本体底端设置有座椅骨架,所述座椅套周长大于座椅骨架周长,所述座椅套外表面为梯形状结构；背椅套,位于所述座椅本体的上端,所述背椅套内部设置有靠背椅骨架,所述靠背椅骨架的顶端分别设置有固定座和限位座。该整体可调双人副驾座椅,调节的过程中,调角器内部的滑槽与六角螺钉相互连接,六角螺钉与靠背椅骨架同步移动的同时,由滑槽对六角螺钉和座椅骨架进行导向,增加调节的稳定性的同时,还可以通过六角螺钉与弹簧垫圈增加对靠背椅骨架转动的受力点,增加靠背椅骨架的承重能力,从而提高整体使用的便捷性。(The invention discloses an integrally adjustable double-person secondary driving seat which comprises a seat body and is a main outer frame structure of equipment, wherein a seat cover is arranged on the outer surface of the seat body, a seat framework is arranged at the bottom end of the seat body, the circumference of the seat cover is larger than that of the seat framework, and the outer surface of the seat cover is of a ladder-shaped structure; the backrest chair comprises a backrest chair cover and a backrest chair framework, wherein the backrest chair cover is positioned at the upper end of the chair body, the backrest chair framework is arranged inside the backrest chair cover, and the top end of the backrest chair framework is respectively provided with a fixing seat and a limiting seat. This vice seat of driving of double that wholly adjustable, the in-process of regulation, inside spout and the hex bolts interconnect of angle modulation ware, when hex bolts and back chair skeleton synchronous motion, lead hex bolts and seat skeleton by the spout, when increasing the stability of adjusting, can also increase the stress point to back chair skeleton pivoted through hex bolts and spring washer, increase the bearing capacity of back chair skeleton to improve the convenience of whole use.)

1. An integrally adjustable double copilot seat, comprising:

the seat comprises a seat body (1) which is a main outer frame structure of equipment, wherein a seat cover (4) is arranged on the outer surface of the seat body (1), a seat framework (25) is arranged at the bottom end of the seat body (1), the circumference of the seat cover (4) is greater than that of the seat framework (25), and the outer surface of the seat cover (4) is of a ladder-shaped structure;

the backrest chair comprises a backrest chair sleeve (2) and a backrest chair framework (5), wherein the backrest chair sleeve (2) is positioned at the upper end of the chair body (1), the backrest chair framework (5) is internally provided with the backrest chair framework, and the top end of the backrest chair framework (5) is respectively provided with a fixed seat (30) and a limiting seat (31);

the retractor body (27) is positioned at the middle end of the backrest chair framework (5), and a safety belt front blocking cover (8), a safety belt outer cover (9), a safety belt rear cover (10) and a safety belt limiting cover (11) are respectively arranged on the inner part and the outer part of the retractor body (27);

the seat angle adjuster comprises an angle adjuster body (13) positioned on the top surface of one end of the seat body (1), wherein the angle adjuster body (13) is sequentially provided with a first angle adjuster outer protecting cover (14) and a second angle adjuster outer protecting cover (15) from outside to inside, and the inner surface of the angle adjuster body (13) is respectively provided with a first angle adjuster inner protecting cover (16) and a second angle adjuster inner protecting cover (17);

the retractor comprises a guide sliding groove (12) located at the bottom end of a retractor body (27), and a first retractor bolt (28) is arranged inside the guide sliding groove (12).

2. The integrated adjustable double passenger seat according to claim 1, wherein: backrest chair skeleton (5) are split type structure, backrest chair skeleton (5) bottom through connection has reinforcing connecting rod (32), backrest chair skeleton (5) top by retractor body (27) spacing connection, backrest chair skeleton (5) pass through angle modulation ware body (13) and seat skeleton (25) interconnect.

3. The integrated adjustable double passenger seat according to claim 1, wherein: backrest chair skeleton (5) are connected for the block with back of the body chair cover (2), fixing base (30) and spacing seat (31) distribute about seat body (1) central perpendicular line mirror image, fixing base (30) and spacing seat (31) quantity are 2.

4. The integrated adjustable double passenger seat according to claim 1, wherein: fixed headrest bolt (6) is the same with from locking-type headrest bolt (7) length, fixed headrest bolt (6) is block sliding connection with fixing base (30), be swing joint from locking-type headrest bolt (7) and spacing seat (31), fixed headrest bolt (6) and from locking-type headrest bolt (7) and headrest assembly (3) bottom interconnect, be swivelling joint from locking-type headrest bolt (7) and headrest assembly (3).

5. The integrated adjustable double passenger seat according to claim 1, wherein: the utility model discloses a safety belt retractor, including safety belt front closure (8) internal surface and safety belt rear shroud (10) top surface interconnect, behind the safety belt shroud (10) bottom surface is laminated with safety belt outer shroud (9) and is connected each other, safety belt outer shroud (9) internal connection has screw nail (21), shroud (10) interconnect behind the surface of screw nail (21) and the safety belt, the inside breach of safety belt outer shroud (9) is swing joint with retractor body (27).

6. The integrated adjustable double passenger seat according to claim 1, wherein: the angle adjuster is characterized in that a backrest adjusting handle (18) is arranged inside the angle adjuster body (13), the front end and the rear end of the angle adjuster body (13) are respectively attached to a first angle adjuster inner protecting cover (16) and a second angle adjuster inner protecting cover (17), the outer surface of the angle adjuster body (13) is respectively connected with a first angle adjuster outer protecting cover (14) and a second angle adjuster outer protecting cover (15), the second angle adjuster outer protecting cover (15) is connected with the first angle adjuster outer protecting cover (14) through a second self-tapping screw (23), and the first angle adjuster inner protecting cover (16) is connected with the second angle adjuster inner protecting cover (17) through a first self-tapping screw (22).

7. The integrated adjustable double passenger seat according to claim 1, wherein: the inside difference swivelling joint of seat skeleton (25) has buckle (26), buckle (26) quantity is 2, buckle (26) with coiler body (27) interconnect, the surface sliding connection of coiler body (27) has safety belt via hole (19), safety belt via hole (19) front end laminating is connected with safety belt protecting cover (20), safety belt via hole (19) and direction spout (12) sliding connection, state coiler body (27) inside second coiler bolt (29) that is provided with.

8. The integrated adjustable double passenger seat according to claim 1, wherein: the backrest seat is characterized in that safety belt buckles (26) are respectively and rotatably connected to the inner portion of the seat framework (25), an arc-shaped sliding groove (33) is preset at the top end of the angle adjuster body (13), a hexagon screw (24) is connected to the inner portion of the arc-shaped sliding groove (33), a spring washer (34) is connected to the outer surface of one end of the hexagon screw (24), and the other end of the hexagon screw (24) is fixedly connected with the backrest seat framework (5).

Technical Field

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

Background

Along with the continuous development of automotive technology, products in the car are continuously pushed out newly, the passenger also becomes higher and higher to the riding comfort requirement in the car, the fixed double vice seat of driving of back is because the unable angle regulation of back, take for a long time, it is very uncomfortable, seriously influence the travelling comfort that the passenger took, fixed double vice seat of driving of this kind of back in the past, more and more can not satisfy the market demand, consequently, need a back adjustable double vice seat of driving of back can improve the travelling comfort, satisfy the passenger demand.

Disclosure of Invention

The invention aims to provide an integrally adjustable double secondary driving seat, and aims to solve the problems that a backrest fixed type double secondary driving seat is very uncomfortable after being taken for a long time and seriously affects the comfort of passengers because the backrest can not be adjusted in angle in the background technology.

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

the seat body is of a main outer frame structure of equipment, a seat cover is arranged on the outer surface of the seat body, a seat framework is arranged at the bottom end of the seat body, the perimeter of the seat cover is larger than that of the seat framework, and the outer surface of the seat cover is of a trapezoidal structure;

the backrest chair comprises a seat body, a backrest chair sleeve and a backrest chair frame, wherein the seat body is provided with a backrest chair frame;

the retractor body is positioned at the middle end of the backrest chair framework, and a safety belt front blocking cover, a safety belt outer cover, a safety belt rear cover and a safety belt limiting cover are respectively arranged outside the retractor body;

the angle adjuster comprises an angle adjuster body, a seat body and a seat cover, wherein the angle adjuster body is positioned on the top surface of one end of the seat body, the angle adjuster body is sequentially provided with a first angle adjuster outer protecting cover and a second angle adjuster outer protecting cover from outside to inside, and the inner surface of the angle adjuster body is respectively provided with a first angle adjuster inner protecting cover and a second angle adjuster inner protecting cover;

the direction spout is located coiler body bottom, the inside first ware bolt of coiling that is provided with of direction spout.

According to the preferable technical scheme, the backrest chair framework is of a split structure, the bottom of the backrest chair framework is connected with the reinforcing connecting rod in a penetrating mode, the top ends of the backrest chair framework are connected with each other through the retractor body, and the backrest chair framework is connected with the seat framework through the angle adjuster body.

Adopt above-mentioned technical scheme, back chair skeleton is two independent structures to run through by strengthening the connecting rod and carry on spacingly, back chair skeleton top is spacing by the coiler body simultaneously, makes back chair skeleton wholly can carry out the same width of cloth rotation, and the angle modulation ware body supports fixedly to back chair skeleton simultaneously, makes back chair skeleton can use the angle modulation ware body to carry out rotation regulation as the central point.

As a preferable technical scheme of the invention, the backrest chair framework is connected with the backrest chair sleeve in a clamping manner, the fixed seat and the limiting seat are distributed in a mirror image manner relative to a central vertical line of the chair body, and the number of the fixed seat and the number of the limiting seat are both one.

Adopt above-mentioned technical scheme, back chair skeleton and back chair cover block each other to set up two fixing bases and spacing seat respectively on the top of back chair skeleton, the fixing base corresponds with fixed headrest bolt, and spacing seat corresponds with from locking-type headrest bolt, is convenient for to the headrest assembly adjust that leads.

As a preferred technical scheme of the present invention, the fixed headrest plug and the self-locking headrest plug have the same length, the fixed headrest plug is in clamping sliding connection with the fixed seat, the self-locking headrest plug is movably connected with the limiting seat, the fixed headrest plug and the self-locking headrest plug are connected with the bottom of the headrest assembly, and the self-locking headrest plug is in rotary connection with the headrest assembly.

Adopt above-mentioned technical scheme, fixed headrest bolt is the same with from locking-type headrest bolt length, when sliding along fixing base and spacing seat inside, can guarantee that the position of headrest assembly is symmetrical all the time to correspond with spacing seat inside draw-in groove position through rotatory from locking-type headrest bolt, can fix the current height of headrest assembly, thereby increase the convenience of adjusting the headrest assembly.

According to the preferable technical scheme, the inner surface of the front blocking cover of the safety belt is connected with the top surface of the rear cover of the safety belt, the outer surface of the bottom end of the rear cover of the safety belt is connected with the outer cover of the safety belt in an attaching mode, a threaded nail is connected inside the outer cover of the safety belt, the outer surface of the threaded nail is connected with the rear cover of the safety belt, and a notch in the outer cover of the safety belt is movably connected with the retractor body.

Adopt above-mentioned technical scheme, the top of closing cap laminating behind the safety belt before the safety belt to use the screw thread nail to fix, the one end of screw thread nail runs through behind the safety belt shroud and safety belt dustcoat interconnect, makes behind safety belt dustcoat and the safety belt shroud and the safety belt closing cap laminate each other, and with the spacing lid laminating of safety belt in the draw-in groove of the surface of safety belt dustcoat, can realize installing and dismantling the coiler body.

As a preferred technical scheme of the present invention, a backrest adjustment handle is disposed inside the angle adjuster body, the front and rear ends of the angle adjuster body are respectively attached to the first angle adjuster inner protective cover and the second angle adjuster inner protective cover, the outer surface of the angle adjuster body is respectively connected to the first angle adjuster outer protective cover and the second angle adjuster outer protective cover, the second angle adjuster outer protective cover is connected to the first angle adjuster outer protective cover through the second tapping screw, and the first angle adjuster inner protective cover is connected to the second angle adjuster inner protective cover through the first tapping screw.

Adopt above-mentioned technical scheme, the angle modulation ware body is installed back adjustment handle, second angle modulation ware internal protective cover carries out spacing fixed to back adjustment handle surface, and cooperate first angle modulation ware internal protective cover to carry out spacing fixed to back adjustment handle's other end surface, it fixes inside the angle modulation ware body to make back adjustment handle, the inside structure and the angle modulation ware body inner structure transmission that sets up of back adjustment handle, be convenient for realize controlling the inside limit structure of angle modulation ware body, carry out the block by first angle modulation ware external protective cover and second angle modulation ware outer protecting cover to the angle modulation ware body simultaneously and fix, it fixes inside the seat skeleton to make the angle modulation ware body.

According to a preferred technical scheme of the invention, the seat frame is internally and respectively and rotatably connected with a plurality of safety belt buckles, the safety belt buckles are mutually connected with the retractor body, the outer surface of the retractor body is in sliding connection with safety belt through holes, the front ends of the safety belt through holes are in fit connection with safety belt protecting covers, the safety belt through holes are in sliding connection with the guide sliding grooves, and second retractor bolts are arranged in the retractor body.

Adopt above-mentioned technical scheme, the buckle is fixed respectively at the middle-end of seat skeleton and the opposite face of angle modulation ware body, the coiler body of being convenient for and buckle interconnect with the safety belt, wherein the safety belt via hole leads the safety belt, and still increase the holistic stress point of safety belt, improve the security of wearing, the safety belt via hole is fixed by first self-tapping screw with the safety belt protecting cover, and can slide adjusting along the direction spout, can carry out self-adaptation regulation according to copilot's size and special demand, thereby the convenience that the safety belt used has been increased.

According to the preferable technical scheme, an arc-shaped sliding groove is preset at the top end of the angle adjuster body, a hexagon screw is connected inside the arc-shaped sliding groove, a spring washer is connected to the outer surface of one end of the hexagon screw, and the other end of the hexagon screw is fixedly connected with the backrest chair framework.

Adopt above-mentioned technical scheme, the angle modulation ware body is when supporting fixedly to back chair skeleton, runs through arc spout and back chair skeleton interconnect by hex bolts, makes back chair skeleton when the rotation regulation, can play the effect of direction to increase the stability of adjusting, spring washer guarantees hex bolts's stability, and reduces the wearing and tearing that the hex bolts produced, thereby has increased holistic practicality.

Compared with the prior art, the invention has the beneficial effects that: this wholly adjustable double vice seat of driving:

1. through fixing the coiler body in the upper end connecting portion position of carrying on the back the chair, not only can strengthen the joint strength between two back of the body chairs, can also supply another seat to carry out the safety belt protection simultaneously, the while cooperation is strengthened the connecting rod and is run through the seat skeleton, can make the seat carry out angle modulation along the regulator in step, at the in-process of adjusting, inside spout and the screw interconnect of angle modulation ware, when screw and seat skeleton synchronous motion, lead to screw and seat skeleton by the spout, when increasing the stability of adjusting, can also increase the stress point to seat skeleton pivoted through screw and spring washer, increase the bearing capacity of seat skeleton, thereby improve the convenience of whole use.

2. Through at the inside direction spout that increases of skeleton and seat skeleton to direction spout and safety belt via hole interconnect can realize improving convenience and the travelling comfort that the safety belt used to the hidden effect of safety belt via hole, set up two bolts in the bottom of headrest assembly simultaneously, be fixed respectively with movable, bolt and fixing base and spacing seat interconnect carry out rotation regulation through movable bolt, can carry out spacing fixed to headrest assembly current position, thereby has increased holistic practicality.

Drawings

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

FIG. 2 is a schematic view of a disassembled structure of a seat body and a backrest frame of the present invention;

FIG. 3 is a schematic view of a disassembled structure of the components of the back seat cover and the headrest assembly of the present invention;

FIG. 4 is a schematic view of a disassembled structure of parts of a front blocking cover and an outer cover of a safety belt;

FIG. 5 is a schematic view of a detachable structure of a fixed headrest bolt and a self-locking headrest bolt according to the present invention;

FIG. 6 is a schematic view of a disassembled structure of the inner cover of the first angle adjuster and the inner cover of the second angle adjuster;

fig. 7 is a schematic view of a component disassembling structure of the retractor body according to the invention;

FIG. 8 is a schematic view of a seat belt cover of the present invention with parts disassembled;

fig. 9 is a schematic view of a disassembled structure of the belt through hole and the belt cover part of the present invention.

In the figure: 1. a seat body; 2. a back-chair cover; 3. a headrest assembly; 4. a seat cover; 5. a backrest chair framework; 6. a fixed headrest pin; 7. a self-locking headrest bolt; 8. a safety belt front blocking cover; 9. a seat belt outer cover; 10. a seat belt rear cover; 11. a safety belt limit cover; 12. a guide chute; 13. an angle adjuster body; 14. a first recliner outer cover; 15. a second recliner outer cover; 16. a first recliner inner cover; 17. a second recliner inner cover; 18. a backrest adjusting handle; 19. a safety belt through hole; 20. a seat belt cover; 21. a threaded nail; 22. a first tapping screw; 23. a second tapping screw; 24. a hex screw; 25. a seat frame; 26. a seat belt buckle; 27. a retractor body; 28. a first retractor bolt; 29. a second retractor bolt; 30. a fixed seat; 31. a limiting seat; 32. a reinforcing connecting rod; 33. an arc-shaped chute; 34. a spring washer.

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. 1-9, the present invention provides a technical solution: an integrally adjustable tandem seat, comprising:

the seat body 1 is a main outer frame structure of equipment, a seat cover 4 is arranged on the outer surface of the seat body 1, a seat framework 25 is arranged at the bottom end of the seat body 1, the circumference of the seat cover 4 is greater than that of the seat framework 25, and the outer surface of the seat cover 4 is of a ladder-shaped structure; the backrest seat cover 2 is positioned at the upper end of the seat body 1, a backrest seat framework 5 is arranged in the backrest seat cover 2, and a fixed seat 30 and a limiting seat 31 are respectively arranged at the top end of the backrest seat framework 5; the retractor body 27 is positioned at the middle end of the backrest chair framework 5, and a safety belt front blocking cover 8, a safety belt outer cover 9, a safety belt rear cover 10 and a safety belt limiting cover 11 are respectively arranged outside the retractor body 27; the angle adjuster body 13 is positioned on the top surface of one end of the seat body 1, the angle adjuster body 13 is sequentially provided with a first angle adjuster outer protecting cover 14 and a second angle adjuster outer protecting cover 15 from outside to inside, and the inner surface of the angle adjuster body 13 is respectively provided with a first angle adjuster inner protecting cover 16 and a second angle adjuster inner protecting cover 17; the guide chute 12 is located at the bottom end of the retractor body 27, and a first retractor bolt 28 is arranged inside the guide chute 12.

The backrest chair framework 5 is of a split structure, the bottom of the backrest chair framework 5 is connected with a reinforcing connecting rod 32 in a penetrating way, the top ends of the backrest chair framework 5 are connected with each other through a retractor body 27, and the backrest chair framework 5 is connected with the seat framework 25 through an angle adjuster body 13; the backrest chair framework 5 is of two independent structures and is limited by the penetration of the reinforcing connecting rod 32, meanwhile, the top end of the backrest chair framework 5 is limited by the retractor body 27, so that the whole backrest chair framework 5 can rotate with the same amplitude, and meanwhile, the angle adjuster body 13 supports and fixes the backrest chair framework 5, so that the backrest chair framework 5 can rotate and adjust by taking the angle adjuster body 13 as a central point.

The backrest chair framework 5 is connected with the backrest chair sleeve 2 in a clamping manner, the fixed seat 30 and the limiting seat 31 are distributed in a mirror image manner about the central vertical line of the chair body 1, and the number of the fixed seat 30 and the number of the limiting seat 31 are 2; the backrest chair framework 5 and the backrest chair sleeve 2 are mutually clamped, the two fixing seats 30 and the limiting seat 31 are respectively arranged at the top end of the backrest chair framework 5, the fixing seats 30 correspond to the fixed headrest bolts 6, and the limiting seat 31 corresponds to the self-locking headrest bolts 7, so that the headrest assembly 3 is conveniently guided and adjusted.

The fixed headrest bolt 6 and the self-locking headrest bolt 7 are the same in length, the fixed headrest bolt 6 is in clamping sliding connection with the fixed seat 30, the self-locking headrest bolt 7 is movably connected with the limiting seat 31, the fixed headrest bolt 6 and the self-locking headrest bolt 7 are connected with the bottom of the headrest assembly 3, and the self-locking headrest bolt 7 is in rotary connection with the headrest assembly 3; fixed headrest bolt 6 is the same with self-locking headrest bolt 7 length, when sliding along fixing base 30 and spacing seat 31 inside, can guarantee that headrest assembly 3's position is symmetrical all the time to correspond with spacing seat 31 inside draw-in groove position through rotatory self-locking headrest bolt 7, can fix headrest assembly 3 current height, thereby increase the convenience of adjusting headrest assembly 3.

The inner surface of the safety belt front blocking cover 8 is mutually connected with the top surface of the safety belt rear cover 10, the outer surface of the bottom end of the safety belt rear cover 10 is mutually attached and connected with the safety belt outer cover 9, a threaded nail 21 is connected inside the safety belt outer cover 9, the outer surface of the threaded nail 21 is mutually connected with the safety belt rear cover 10, and a notch inside the safety belt outer cover 9 is movably connected with a retractor body 27; the top of shroud 10 behind the safety belt is laminated to 8 stifled lids before the safety belt to use screw 21 to fix, the one end of screw 21 runs through behind the safety belt shroud 10 and safety belt dustcoat 9 interconnect simultaneously, makes behind safety belt dustcoat 9 and the safety belt shroud 10 and the safety belt stifled lid 8 laminate each other, and with the spacing lid of safety belt 11 laminating in the draw-in groove of the surface of safety belt dustcoat 9, can realize installing and dismantling coiler body 27.

A backrest adjusting handle 18 is arranged inside the angle adjuster body 13, the front end and the rear end of the angle adjuster body 13 are respectively attached to a first angle adjuster inner protecting cover 16 and a second angle adjuster inner protecting cover 17, the outer surface of the angle adjuster body 13 is respectively connected with a first angle adjuster outer protecting cover 14 and a second angle adjuster outer protecting cover 15, the second angle adjuster outer protecting cover 15 is connected with the first angle adjuster outer protecting cover 14 through a second self-tapping screw 23, and the first angle adjuster inner protecting cover 16 is connected with the second angle adjuster inner protecting cover 17 through a first self-tapping screw 22; angle modulation ware body 13 is installed back adjustment handle 18, second angle modulation ware internal protective cover 17 carries out spacing fixed to back adjustment handle 18 surface, and cooperation first angle modulation ware internal protective cover 16 carries out spacing fixed to back adjustment handle 18's other end surface, it fixes inside angle modulation ware body 13 to make back adjustment handle 18, the structure and the 13 inner structure of angle modulation ware body internal gearing of the inside setting of back adjustment handle 18, be convenient for realize controlling the inside limit structure of angle modulation ware body 13, carry out the block by first angle modulation ware external protective cover 14 and second angle modulation ware external protective cover 15 to angle modulation ware body 13 simultaneously and fix, it fixes inside seat skeleton 25 to make angle modulation ware body 13 fix.

Seat belt buckles 26 are respectively and rotatably connected to the interior of the seat frame 25, the number of the seat belt buckles 26 is 2, the seat belt buckles 26 are mutually connected with a retractor body 27, a seat belt through hole 19 is connected to the outer surface of the retractor body 27 in a sliding manner, a seat belt protecting cover 20 is connected to the front end of the seat belt through hole 19 in an attaching manner, the seat belt through hole 19 is connected with the guide sliding groove 12 in a sliding manner, and a second retractor bolt 29 is arranged inside the retractor body 27; seat belt buckle 26 is fixed respectively at the middle-end of seat skeleton 25 and the opposite face of angle modulation ware body 13, the coiler body 27 and the seat belt buckle 26 interconnect of being convenient for, wherein safety belt via hole 19 leads the safety belt, and still increase the holistic stress point of safety belt, improve the security of wearing, safety belt via hole 19 is fixed by first self-tapping screw 22 with safety belt protecting cover 20, and can slide along direction spout 12 and adjust, can carry out self-adaptation regulation according to copilot's size and special demands, thereby the convenience that the safety belt used has been increased.

An arc-shaped sliding groove 33 is preset at the top end of the angle adjuster body 13, a hexagon screw 24 is connected inside the arc-shaped sliding groove 33, a spring washer 34 is connected to the outer surface of one end of the hexagon screw 24, and the other end of the hexagon screw 24 is fixedly connected with the backrest chair framework 5; the angle adjuster body 13 supports and fixes the back rest chair framework 5, and simultaneously, the hexagonal screw 24 penetrates through the arc-shaped sliding groove 33 and is connected with the back rest chair framework 5, so that the back rest chair framework 5 can play a role in guiding when being rotated and adjusted, the adjusting stability is improved, the spring washer 34 ensures the stability of the hexagonal screw 24, the abrasion generated by the hexagonal screw 24 is reduced, and the overall practicability is improved.

The working principle is as follows: when the integrally adjustable double-person secondary driving seat is used, firstly, the seat body 1 is integrally assembled, the first angle adjuster inner protecting cover 16 and the second angle adjuster inner protecting cover 17 are clamped on the outer surface of the backrest adjusting handle 18, then the backrest adjusting handle 18 is integrally clamped inside the angle adjuster body 13, the first angle adjuster outer protecting cover 14 and the second angle adjuster outer protecting cover 15 are installed on the outer surface of the angle adjuster body 13, the positions of the angle adjuster body 13 and the backrest seat framework 5 correspond to each other, then, the height of the headrest assembly 3 is adjusted, the headrest assembly 3 is pulled to lift up and down, so that the fixed headrest bolt 6 and the self-locking headrest bolt 7 slide inside the fixed seat 30 and the limiting seat 31, when the angle adjuster body is moved to a proper position, the rotary self-locking headrest bolt 7 rotates on the limiting seat 31, the outer surface of one end of the rotary self-locking headrest bolt 7 is limited through the clamping groove inside the limiting seat 31, thereby fixing the current position of the headrest assembly 3, the retractor body 27 is clamped and fixed by the safety belt front blocking cover 8, the safety belt outer cover 9, the safety belt rear cover 10 and the safety belt limit cover 11, wherein the safety belt limit cover 11 passes through the safety belt outer cover 9 to brake the safety belt when the safety belt is emergently locked, one end of the safety belt passes through the safety belt via hole 19 to be mutually connected and locked with the safety belt buckle 26, when the angle of the seat body 1 needs to be adjusted, the backrest adjusting handle 18 is operated to rotate, the limit structure in the angle adjuster body 13 is released to apply force to the backrest chair framework 5, the backrest chair framework 5 rotates by taking the angle adjuster body 13 as a central point, during the adjustment process, the hexagon screw 24 slides along the arc-shaped sliding groove 33 to guide the whole movement of the backrest chair framework 5, the backrest chair framework 5 can be adjusted to an angle of 160 degrees at the highest, so that the whole angle of the chair can be adjusted at the same time, and the flexibility and safety of each structure are ensured, thereby increasing the whole practicability.

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.