CN218702863U - Foldable and Shu Tang improved seat frame and seat - Google Patents

Abstract

The utility model discloses a foldable and Shu Tang's improvement type seat skeleton, seat skeleton include back skeleton and cushion skeleton, and the cushion skeleton contains sits basin, prevents latent crossbeam welded assembly, a pair of upper bracket, drives horizontal pipe welded assembly and push rod motor element; the backrest framework is hinged on the rear ends of the pair of upper brackets, wherein the backrest framework can be adjusted at any angle between folding, shu Tang and lying down independently relative to the cushion framework; the left end and the right end of the driving transverse pipe welding assembly are fixedly connected with the rear ends of the pair of upper brackets; the front end of the sitting basin is hinged with the upper end of the anti-diving beam welding assembly, the lower end of the anti-diving beam welding assembly is hinged with the front ends of the pair of upper supports, the motor in the push rod motor assembly is hinged on the driving transverse pipe welding assembly, the tail end of the push rod in the push rod motor assembly is hinged with the anti-diving beam welding assembly, and the rear end of the sitting basin is connected with the pair of upper supports in a sliding mode.

Description

Foldable and Shu Tang's improvement type seat skeleton and seat

Technical Field

The utility model relates to a seat technical field, in particular to foldable and Shu Tang's improvement type seat skeleton and seat.

Background

The existing seat only has the function of manually folding the backrest and cannot meet the requirement of comfort.

To this end, chinese patent application No. CN201810257028.1 discloses a seat assembly including a seat, which does not have a backrest folding function and a rear seat lifting device in the patent application is an air bag, and the rear part of the seat is lifted relative to the seat backrest by inflation and deflation of the air bag, so as to minimize a height difference between the rear part of the seat and the bottom of the seat backrest.

Chinese patent application No. CN201820270607.5 discloses a seat assembly for a vehicle which does not have a backrest folding function and which rotates rearward of the seat backrest, extends an extendable leg support member forward, and lifts a rear seat lifting device to provide optimal resting conditions for passengers. This patent does not disclose a specific rear seat lifting device.

Chinese patent application No. CN201910987271.3 discloses a vehicle seat which does not have a backrest folding function and in which the lifting and lowering of the rear end of a seat cushion is associated with the rotation of a backrest and the lifting and lowering of the rear end of the seat cushion is not independent of the rotation of the backrest.

The invention discloses a seat assembly disclosed in Chinese patent application publication No. CN101365607A, which realizes the forward movement and folding of a cushion by means of seat and backrest linkage, and the rear end of the cushion is lifted after the backrest is flatly placed. The lifting of the rear end of the cushion is not independent of the rotation of the backrest.

The invention discloses a retractable vehicle seat with a grooved guide link disclosed in China invention patent application publication No. CN106564410A, which also depends on the seat-back linkage to realize the forward movement and folding of a cushion, after a backrest is flatly placed, the rear end of the cushion is lifted, and the lifting of the rear end of the cushion is not independent of the rotation of the backrest.

The applicant filed a patent application entitled "foldable and comfortable lying seat frame and seat" for the application of utility model, which is now granted and has an authorization publication number of CN217396316U, to the national intellectual property office in 2022, 4, 8, month, year, the backrest frame of the patent depends on the driving of the angle adjusting motor component to perform angle adjustment relative to the cushion frame, and the cushion frame is driven by the push rod motor component to perform height adjustment. The folding bed has three functions of folding, shu Tang and lying, and can be adjusted and fixed at any position between folding and lying relaxing, so that the use requirement is met.

The utility model discloses a provide a new cushion elevating gear on the seat skeleton and the seat basis that can fold and relax and lie that CN217396316U discloses, rely on this cushion elevating gear to realize the altitude mixture control of cushion skeleton, satisfy collapsible, shu Tang and the three kinds of functions of lying, can fold simultaneously and lie with relaxing and carry out optional position regulation and fix, satisfy the operation requirement.

SUMMERY OF THE UTILITY MODEL

One of the technical problems to be solved by the present invention is to provide a foldable and Shu Tang improved seat frame with three functions of foldable, shu Tang and lying flat aiming at the defects of the prior art.

The second technical problem to be solved by the present invention is to provide a seat comprising the improved seat frame.

In order to achieve the purpose, the utility model discloses a foldable and Shu Tang's improvement type seat skeleton, the seat skeleton includes back skeleton and cushion skeleton, the cushion skeleton contains sits basin, anti-diving crossbeam welded assembly, a pair of upper bracket, drive horizontal tube welded assembly and push rod motor element; the backrest frame is hinged on the rear ends of the pair of upper brackets, wherein the backrest frame can be adjusted independently of any angle between folded, shu Tang and lying flat relative to the cushion frame; the left end and the right end of the driving transverse pipe welding assembly are fixedly connected with the rear ends of the pair of upper supports and are positioned between the pair of upper supports; sit the front end of basin and prevent diving crossbeam welded subassembly's upper end hinge and establish, prevent diving crossbeam welded subassembly's lower extreme with the front end hinge of a pair of upper bracket establishes, motor hinge among the push rod motor element establishes on the horizontal pipe welded subassembly of drive, push rod among the push rod motor element terminal with prevent diving crossbeam welded subassembly hinge and establish, its characterized in that, the rear end of sitting the basin adopts the sliding mode to be connected with a pair of upper bracket.

In a preferred embodiment of the present invention, the backrest frame can be adjusted in angle at will when sitting normally; the cushion skeleton can be according to the application scene of difference, can follow-up lifting along with the regulation of back skeleton also can be fixed and follow-up lifting not along with the regulation of back skeleton, the motor among the push rod motor element carries out logic control through the controller.

In a preferred embodiment of the present invention, the backrest frame is turned backwards from an initial position of the backrest frame to a lying position, and the rear end of the seat basin is independent of the backrest frame and is driven by the push rod motor assembly to lift to the highest position; the backrest framework is turned forwards from an initial position of the backrest framework to a folding position, and the rear end of the sitting basin is independent of the backrest framework and is driven by the push rod motor assembly to descend to the lowest position; when the backrest framework is turned backwards to a certain angle from the initial position of the backrest framework by means of the angle adjusting motor assembly, the cushion framework starts to be driven by the push rod motor assembly to be lifted and synchronously and regularly changed along with the angle change of the backrest framework or the cushion framework is fixed, and vice versa.

In a preferred embodiment of the present invention, the sliding connection between the rear end of the seat basin and the pair of upper brackets is specifically: the bidet comprises a bidet front plate, a pair of bidet side longitudinal beams, a front transverse tube, a rear transverse tube welding assembly and a pair of rear connecting rods, wherein the bidet front plate is fixed on the front sides of the pair of bidet side longitudinal beams, the left end and the right end of the front transverse tube are respectively fixedly connected with the front ends of the pair of bidet side longitudinal beams and positioned between the pair of bidet side longitudinal beams, the left end and the right end of the upper end of the anti-submergence cross beam welding assembly are respectively hinged with the front ends of the pair of bidet side longitudinal beams, and the left end and the right end of the rear transverse tube welding assembly are respectively fixedly connected with the rear ends of the pair of bidet side longitudinal beams and positioned between the pair of bidet side longitudinal beams; the upper ends of the pair of rear connecting rods are fixed at the left end and the right end of the rear transverse pipe welding assembly, and the lower ends of the pair of rear connecting rods are connected with the pair of upper supports in a sliding mode.

In a preferred embodiment of the present invention, a sliding groove is formed on each of the pair of upper brackets, and the lower ends of the pair of rear connecting rods are slidably connected to the pair of upper brackets by a rear step bolt passing through the sliding groove and the lower ends of the rear connecting rods, wherein the rear step bolt is slidably fitted to the sliding groove.

In a preferred embodiment of the present invention, a plastic sleeve is sleeved on the rear step bolt, and the plastic sleeve is slidably fitted with the sliding groove.

In a preferred embodiment of the present invention, the pair of upper brackets are fixed to the vehicle body floor or the upper rails of the pair of slide rails, and the lower rails of the pair of slide rails are fixed to the vehicle body floor.

In a preferred embodiment of the present invention, a motor mounting bracket is fixed on the driving horizontal tube welding assembly, a motor in the push rod motor assembly is hinged on the motor mounting bracket through a rear motor mounting screw, and the motor in the push rod motor assembly is driven by a lead screw nut mechanism, and the push rod in the push rod motor assembly performs linear motion.

In a preferred embodiment of the present invention, the anti-diving crossbeam welding assembly comprises an anti-diving horizontal pipe and a pair of anti-diving connecting rods, wherein the left and right ends of the anti-diving horizontal pipe are hinged to the front ends of a pair of bidet side longitudinal beams through plastic bushings, the upper ends of the pair of anti-diving connecting rods are fixed to the left and right ends of the anti-diving horizontal pipe, and the lower ends of the pair of anti-diving connecting rods are hinged to the front ends of a pair of upper brackets through a pair of front step bolts; the tail end of a push rod in the push rod motor assembly is hinged to a proper position in the middle of one anti-diving connecting rod in the anti-diving beam welding assembly through a front motor mounting screw.

In a preferred embodiment of the present invention, the backrest frame includes a pair of backrest side plates, a backrest upper bent tube, a backrest lower transverse plate, a pair of angle adjusters, an angle adjuster synchronizing rod and a pair of backrest lower connecting plates, the top of the pair of backrest side plates and the left and right ends of the backrest upper bent tube are fixedly connected, the bottom of the pair of backrest side plates and the left and right ends of the backrest lower transverse plate are fixedly connected and are also hinged on the upper ends of the pair of backrest lower connecting plates through the pair of angle adjusters, and the lower ends of the pair of backrest lower connecting plates are respectively fixedly connected with the pair of upper brackets.

In a preferred embodiment of the present invention, the backrest frame further includes a pair of headrest mounting tubes fixed to the bent tubes of the backrest.

In a preferred embodiment of the present invention, the backrest frame further comprises an angle modulation driving motor, and the angle modulation driving motor drives a pair of angle modulators to work through the angle modulation synchronization rod.

In a preferred embodiment of the present invention, under the no-load condition, the push rod driving motor is a low thrust driving motor; under the condition of load, the push rod driving motor is a high-thrust driving motor.

In a preferred embodiment of the present invention, a backrest stroke limiting bracket is respectively installed on the pair of backrest lower connecting plates, and when the backrest frame is turned backwards to the lying position, each backrest stroke limiting bracket contacts with each backrest side plate to limit the backrest frame to the lying position.

As a second aspect of the present invention, a seat includes the seat frame.

Owing to adopted above technical scheme, the utility model discloses possess collapsible and Shu Tang and lie three kinds of functions, can carry out optional position regulation and fixed between initial position and the lying of relaxing simultaneously, satisfy the operation requirement.

The utility model discloses the position of lying comfortable with back skeleton is restricted to the contained angle between back skeleton and cushion skeleton and is 150-180, increases the cushion skeleton correspondence to suitable position simultaneously, has solved back top waist problem of lying behind the back wide angle.

In addition, the cushion framework can lift along with the backrest framework and can also be fixed without lifting along with the backrest framework.

The back row passenger field of vision can be widened after further back is folding, and back backplate can provide the platform of putting the foot or holding article for the back row passenger simultaneously.

To sum up, the utility model discloses can satisfy the customer simultaneously and to the folding requirement of seat, solve the customer again and adjust the not good problem of back top waist travelling comfort to the wide-angle back. In addition, the utility model discloses the part is few, and part quantity and technology are the simplest in several schemes, and the price is low, possesses market competition. The utility model discloses the travelling comfort adaptation to accommodation process can change, the man-machine of adaptable multiple motorcycle type arranges.

Additionally, the utility model discloses a folding and comfortable seat skeleton and seat of lying that relative CN217396316U discloses, its rear end and a pair of upper bracket adoption sliding mode of sitting the basin are connected, have saved a pair of connecting rod, the cost is reduced.

Drawings

Fig. 1 is a side view of the seat frame of the present invention in an initial position.

Fig. 2 is a schematic view of the seat frame of the present invention at the initial position.

Fig. 3 is a side view of the seat frame of the present invention in a folded position.

Fig. 4 is a schematic view of the seat frame of the present invention in the folded position.

Fig. 5 is a side view of the seat frame of the present invention in a comfortable lying position.

Fig. 6 is a schematic view of the seat frame of the present invention in a comfortable lying position.

Fig. 7 is a side view of the seat frame of the present invention in a full-flat position.

Fig. 8 is a schematic view of the seat frame of the present invention in a flat position.

Fig. 9 is a side view of the chair of the present invention in an initial position.

Figure 10 is a side view of the chair of the present invention in the folded position.

Figure 11 is a side view of the chair in the flat position.

Fig. 12 is an exploded view of the seat frame of the present invention.

Fig. 13 is an assembly view of the seat frame of the present invention between the back frame and the seat cushion fixing member.

Fig. 14 is a schematic view of the backrest frame structure of the present invention.

Fig. 15 is an exploded view of the backrest frame of the present invention.

Fig. 16 is a first schematic view of the cushion frame structure of the present invention.

Fig. 17 is a second schematic view of the cushion frame structure of the present invention.

Fig. 18 is a third schematic view of the cushion frame structure of the present invention.

Fig. 19 is an assembly diagram of the cushion frame of the present invention.

Fig. 20 is a schematic view of the structure of the bidet of the present invention.

Fig. 21 is an exploded view of the bowl of the present invention.

Fig. 22 is a schematic structural view of the welding assembly of the anti-diving beam of the present invention.

Fig. 23 is an assembly view of the pair of upper brackets, the driving horizontal tube welding assembly and the seat frame front horizontal tube of the present invention.

FIG. 24 is a schematic view of the assembly of the welding assembly of the upper bracket and the driving horizontal tube, the front horizontal tube of the seat frame, and the lower connecting plate of the backrest of the Xining chair of the present invention.

Fig. 25 is a schematic view of the seat pan in the seat cushion frame moving to the final position and the seat cushion rear end being at the highest position.

Fig. 26 is a schematic view showing that the bowl in the seat cushion frame of the present invention is moved to the foremost position and the rear end of the seat cushion is at the lowest position.

Detailed Description

The invention is described below in conjunction with the following figures and detailed description.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and the above description is for the convenience of description of the present invention and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. The terms "comprising," "including," and "containing" when used in this specification specify the presence of stated features, but do not preclude the presence or addition of one or more other features. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the present application may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. It is also to be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, like reference numbers indicate identical or functionally identical elements.

Referring to fig. 9 to 11, the seat of the present invention includes a seat cushion a and a backrest B, wherein referring to fig. 1 to 8 and 12 to 26, the seat cushion a includes a seat cushion frame 100 and a seat cushion body disposed on the seat cushion frame 100, and the backrest B includes a backrest frame 200 and a backrest body disposed on the backrest frame 200.

The seat frame of the utility model is composed of a cushion frame 100 and a backrest frame 200. In accordance with the conventional seat frame, the back frame 200 is also hinged to the rear side of the seat cushion frame 100, and the back frame 200 can be turned back and forth relative to the seat cushion frame 100.

Referring to fig. 1 to 8 and 12 to 26, the technical essential of the present invention is: back skeleton 200 and cushion skeleton 100 individual drive, to back skeleton 200 upset promptly, the motor 161 that drives among the push rod motor element 160 that cushion skeleton 100 carries out the lifting has two types of optional, one kind is big thrust push rod motor element, another kind is little thrust push rod motor element, big thrust push rod motor element is applied to the function regulation scene that has the load demand (that the people sits and adjusts on the seat promptly), little thrust push rod motor element is applied to the function regulation scene that does not have the load demand (that the people do not sit and adjust on the seat promptly, it goes to sit again with the back people to adjust well).

The utility model discloses a back skeleton 200 and the adjustment mode of sitting basin 110 are basically the same with the adjustment mode of the seat skeleton that CN217396316U disclosed can fold and relax and lie, can refer to a seat skeleton and the seat that CN217396316U disclosed can fold and relax and lie.

Referring particularly to fig. 1, 2, 3 and 4, the back frame 200 is forwardly turned from the initial position of the back B (back frame 200), i.e., the normal seat posture, to the folded position with respect to the seat cushion frame 100 by the actuation of the recliner motor assembly 300, and at this time, the bowl 110 is lowered to the lowest position by the actuation of the push rod motor assembly 160 and the submergence prevention cross member welding assembly 150.

Or referring to fig. 1, 2, 7 and 8, the toilet bowl 110 is tilted backward from the initial position of the backrest B (backrest frame 200) to the lying position, and then the rear end thereof is raised to the highest position by the driving of the push rod motor assembly 160 and the diving beam welding assembly 150.

Or referring to fig. 1, 2, 5 and 6, the backrest frame 200 is driven by the angle modulation driving motor 260 to be turned backwards to a lying position from an initial position of the backrest B (backrest frame 200) relative to the seat cushion frame 100, and the seat tub 110 is driven by the push rod motor assembly 160 and the anti-submergence beam welding assembly 150 to be synchronously adjusted in height regularly in the lying state adjusting process of the backrest frame 200.

The seat frame of the utility model can be designed into various types according to the vehicle model, but basically comprises the following basic structure.

Referring to fig. 12-26, the basic structure of a foldable and reclining seat frame is shown including a back frame 200 and a seat cushion frame 100.

Referring particularly to fig. 12-15, the back frame 200 includes a pair of back side plates 210a, 210b, a back upper elbow 220, a back lower cross plate 230, a pair of back lower connecting plates 170a, 170b (the pair of back lower connecting plates 170a, 170b may also be part of the seat cushion frame 100), and a pair of headrest mounting tubes 240.

The pair of back side plates 210a, 210b, the back upper elbow 220, the back lower cross plate 230, and the pair of headrest mounting tubes 240 are made of a metal material.

The top portions of the pair of back side plates 210a and 210b are fixedly connected to the left and right ends of the back upper elbow 220 by welding, the pair of headrest mounting pipes 240 are fixed to the back upper elbow 220 by welding, and the bottom portions of the pair of back side plates 210a and 210b are fixedly connected to the left and right ends of the back lower cross plate 230 by welding.

A backrest stroke limiting bracket 180a, 180b is respectively installed on the pair of backrest lower connecting plates 170a, 170b, when the backrest framework 200 is turned backwards to the lying-comfort position, each backrest stroke limiting bracket 180a, 180b contacts each backrest side plate 210a, 210b to limit the backrest framework 200 to the lying-comfort position.

Referring particularly to fig. 12, 16-26, the seat cushion frame 100 includes a seat pan 110, a pair of upper brackets 120a, 120b, a drive cross tube weld assembly 130, an upper bracket cross tube 140, an anti-dive cross beam weld assembly 150, a push rod motor assembly 160, and a pair of seat frame attachment plates 190a, 190b.

Referring to fig. 1, 3, 5 and 7 in particular, the pair of upper brackets 120a and 120b may be fixed to a vehicle body floor (not shown) or upper rails of the pair of slide rails 300, and lower rails of the pair of slide rails 300 are fixed to the vehicle body floor.

The left and right ends of the upper bracket cross tube 140 are fixedly welded to the front ends of the pair of upper brackets 120a and 120b and are positioned between the pair of upper brackets 120a and 120b, and the left and right ends of the driving cross tube welding assembly 130 are fixedly welded to the rear ends of the pair of upper brackets 120a and 120b and are positioned between the pair of upper brackets 120a and 120 b.

A pair of seat frame attachment plates 190a, 190b are welded and fixed to rear ends of the pair of upper brackets 120a, 120b, respectively, and a pair of back lower attachment plates 170a, 170b are fixed to the pair of seat frame attachment plates 190a, 190b by two screws 171a, 171b, respectively. Referring back to fig. 12 to 15, the bottom portions of the pair of back side plates 210a, 210b are hinged to the upper ends of the pair of back lower connecting plates 170a, 170b by a pair of recliner 250a, 250b, and the pair of recliner 250a, 250b are driven synchronously by a recliner driving motor 260 and a recliner synchronizing rod 270.

Referring to fig. 12, 16 to 26, a pair of upper brackets 120a, 120b are respectively provided with a slide groove 121a, 121b, and the front end position of the slide groove 121a, 121b is lower than the rear end position. A motor mounting bracket 131a is fixedly welded to the drive cross tube weld assembly 130 adjacent the upper bracket 120a to facilitate mounting of the motor 161 in the push rod motor assembly 160.

The bowl 110 includes a bowl front panel 111, a pair of bowl side rails 112a, 112b, a front cross tube 113, a rear cross tube weld assembly 114, and a pair of rear links 115a, 115b. The tub front 111 is fixedly welded to the front ends of the pair of tub side longitudinal members 112a, 112b, the left and right ends of the front cross pipe 113 are fixedly welded to the front ends of the pair of tub side longitudinal members 112a, 112b, and the left and right ends of the rear cross pipe welding unit 114 are fixedly welded to the front ends of the pair of tub side longitudinal members 112a, 112 b.

The upper ends of the pair of rear links 115a, 115b are welded and fixed to the left and right ends of the rear cross tube welding assembly 114, the lower ends of the pair of rear links 115a, 115b are connected with the pair of upper brackets 120a, 120b in a sliding manner by rear step bolts 116a, 116b passing through the sliding grooves 121a, 121b and the lower ends of the rear links 115a, 115b, respectively, wherein the rear step bolts 116a, 116b are in sliding fit with the sliding grooves 121a, 121b, respectively. Preferably, a plastic bushing 117a, 117b is sleeved on the rear step bolt 116a, 116b, and the plastic bushing 117a, 117b is slidably engaged with the sliding slot 121a, 121b, respectively. With such a configuration, the rear end of the bowl 110 can be slidably connected to the pair of upper brackets 120a and 120 b.

The anti-submergence cross beam welding assembly 150 comprises an anti-submergence cross tube 151 and a pair of anti-submergence connecting rods 152a and 152b, wherein the left end and the right end of the anti-submergence cross tube 151 are hinged to the front ends of a pair of bidet side longitudinal beams 112a and 112b through plastic bushings 153a and 153b respectively, so that the front end of the bidet 110 is hinged to the upper end of the anti-submergence cross beam welding assembly 150.

The upper ends of a pair of anti-dive links 152a, 152b are fixed to the left and right ends of the anti-dive cross tube 151, and the lower ends of the pair of anti-dive links 152a, 152b are hinged to the front ends of the pair of upper brackets 120a, 120b by a pair of front stepped bolts 154a, 154b, respectively.

A motor 161 in the push rod motor assembly 160 is hinged on the motor mounting bracket 131a through a rear motor mounting screw 162, the motor 161 in the push rod motor assembly 160 drives a push rod 163 in the push rod motor assembly 160 to perform linear motion through a screw-nut mechanism, and the tail end of the push rod 163 is hinged on a proper position in the middle of the anti-submergence connecting rod 152a (of course, the anti-submergence connecting rod 152 b) through a front motor mounting screw 164.

The utility model discloses a theory of operation is basically the same with the folding and comfortable seat skeleton and the seat of lying that CN217396316U discloses, and the difference lies in: referring to fig. 26, when the backrest frame 100 is folded and folded, when the push rod 163 of the push rod motor assembly 160 moves forward, the anti-submerging link 152a is driven to rotate counterclockwise around the hinge point of the anti-submerging link 152a with the bowl side rail 112a, and the anti-submerging link 152b is driven to rotate counterclockwise around the hinge point of the anti-submerging link 152b with the bowl side rail 112 b. The pair of anti-diving links 152a, 152b drive the front end of the seat basin 110 to descend through the anti-diving tube 151, the front end of the seat basin 110 drives the lower ends (the rear step bolts 116a, 116 b) of the pair of rear links 115a, 115b to slide in the chutes 121a, 121b of the pair of upper brackets 120a, 120b through the rear cross tube welding assembly 114, and slides from the highest position of the rear ends of the chutes 121a, 121b to the lowest position of the front ends, so that the rear end of the seat basin 110 descends to the lowest position, and the backrest frame 100 is folded and laid flat.

Referring to fig. 25, when the backrest frame 100 is turned backward to the lying position, the push rod 163 of the push rod motor assembly 160 moves backward, so that the diving prevention link 152a is driven to rotate clockwise around the hinge point of the diving prevention link 152a with the bowl side longitudinal beam 112a, and the diving prevention link 152b synchronously rotates clockwise around the hinge point of the diving prevention link 152b with the bowl side longitudinal beam 112 b. The pair of anti-dive links 152a, 152b drive the front end of the seat tub 110 to rise through the anti-dive cross tube 151, the front end of the seat tub 110 drives the lower ends (the rear step bolts 116a, 116 b) of the pair of rear links 115a, 115b to slide in the chutes 121a, 121b of the pair of upper brackets 120a, 120b through the rear cross tube welding assembly 114, and slides from the lowest position of the front ends of the chutes 121a, 121b to the highest position of the rear ends, so that the rear end of the seat tub 110 rises to the highest position and is substantially flush with the lower end of the backrest frame 100, and members can lie conveniently without pushing against the waist.

Claims (15)

1. The foldable improved seat frame Shu Tang comprises a backrest frame and a seat cushion frame, wherein the seat cushion frame comprises a seat basin, an anti-submergence cross beam welding assembly, a pair of upper supports, a driving transverse pipe welding assembly and a push rod motor assembly; the backrest frame is hinged on the rear ends of the pair of upper brackets, wherein the backrest frame can be adjusted independently of any angle between folded, shu Tang and lying flat relative to the cushion frame; the left end and the right end of the driving transverse pipe welding assembly are fixedly connected with the rear ends of the pair of upper supports and are positioned between the pair of upper supports; the improved horizontal pipe driving device is characterized in that the rear end of the sitting basin is connected with the pair of upper supports in a sliding mode.

2. A foldable and Shu Tang improved seat frame as claimed in claim 1 wherein said back frame is adjustable in angle at will during normal sitting; the cushion skeleton can be according to the application scene of difference, can follow-up lifting along with the regulation of back skeleton also can be fixed and follow-up lifting not along with the regulation of back skeleton, the motor among the push rod motor element carries out logic control through the controller.

3. A foldable and Shu Tang improved seat frame as claimed in claim 2 wherein said back frame is folded back from back frame initial position to lie flat position, and the rear end of said seat pan is independent of said back frame and is driven by said push rod motor assembly to rise to the highest position; the backrest framework is turned forwards from an initial position of the backrest framework to a folding position, and the rear end of the sitting basin is independent of the backrest framework and is driven by the push rod motor assembly to descend to the lowest position; when the backrest framework is turned backwards to a certain angle from the initial position of the backrest framework by the angle adjusting motor component, the cushion framework starts to be driven by the push rod motor component to be lifted and synchronously and regularly changed along with the angle change of the backrest framework or the cushion framework is fixed, and vice versa.

4. A foldable and Shu Tang improved seat frame as claimed in any one of claims 1 to 3 wherein the rear end of said bowl is slidably connected to a pair of upper brackets, specifically: the bidet comprises a bidet front plate, a pair of bidet side longitudinal beams, a front transverse tube, a rear transverse tube welding assembly and a pair of rear connecting rods, wherein the bidet front plate is fixed on the front sides of the pair of bidet side longitudinal beams, the left end and the right end of the front transverse tube are respectively fixedly connected with the front ends of the pair of bidet side longitudinal beams and positioned between the pair of bidet side longitudinal beams, the left end and the right end of the upper end of the anti-submergence cross beam welding assembly are respectively hinged with the front ends of the pair of bidet side longitudinal beams, and the left end and the right end of the rear transverse tube welding assembly are respectively fixedly connected with the rear ends of the pair of bidet side longitudinal beams and positioned between the pair of bidet side longitudinal beams; the upper ends of the pair of rear connecting rods are fixed at the left end and the right end of the rear transverse pipe welding assembly, and the lower ends of the pair of rear connecting rods are connected with the pair of upper supports in a sliding mode.

5. A foldable and Shu Tang improved seat frame as claimed in claim 4 wherein a sliding slot is formed on each of a pair of upper brackets, the lower ends of said pair of rear connecting rods are slidably connected to the pair of upper brackets by rear step bolts passing through said sliding slots and the lower ends of the rear connecting rods, wherein said rear step bolts are slidably engaged with said sliding slots.

6. A foldable and Shu Tang improved seat frame as claimed in claim 5 wherein a plastic bushing is sleeved over said back step bolt, said plastic bushing slidably engaging said sliding slot.

7. A foldable and Shu Tang improved seat frame as claimed in claim 4 wherein a pair of upper brackets are fixed to the floor of the vehicle body or the upper rails of a pair of rails and the lower rails of a pair of rails are fixed to the floor of the vehicle body.

8. An improved seat frame Shu Tang as foldable as claimed in claim 4 wherein a motor mounting bracket is fixed on the driving horizontal tube welding assembly, the motor in the push rod motor assembly is hinged on the motor mounting bracket through a rear motor mounting screw, and the motor in the push rod motor assembly drives the push rod in the push rod motor assembly to move linearly through a lead screw nut mechanism.

9. An improved seat frame of claim 4 which is foldable and Shu Tang wherein said anti-dive cross beam welding assembly includes an anti-dive cross tube and a pair of anti-dive connecting rods, the left and right ends of said anti-dive cross tube are respectively hinged to the front ends of a pair of basin side longitudinal beams through plastic bushings, the upper ends of a pair of anti-dive connecting rods are fixed to the left and right ends of said anti-dive cross tube, the lower ends of a pair of anti-dive connecting rods are respectively hinged to the front ends of a pair of upper brackets through a pair of front step bolts; the tail end of a push rod in the push rod motor assembly is hinged to a proper position in the middle of one anti-diving connecting rod in the anti-diving beam welding assembly through a front motor mounting screw.

10. The foldable and improved Shu Tang seat as claimed in claim 4, wherein the backrest frame comprises a pair of backrest side plates, a backrest upper elbow, a backrest lower cross plate, a pair of angle modulation devices, an angle modulation device synchronizing bar and a pair of backrest lower connecting plates, wherein the top of the pair of backrest side plates is fixedly connected to the left and right ends of the backrest upper elbow, the bottom of the pair of backrest side plates is fixedly connected to the left and right ends of the backrest lower cross plate and hinged to the upper ends of the pair of backrest lower connecting plates through the pair of angle modulation devices, and the lower ends of the pair of backrest lower connecting plates are respectively fixedly connected to the pair of upper brackets.

11. A foldable and Shu Tang improved seat frame as claimed in claim 10 wherein said back frame further includes a pair of headrest mounting tubes secured to said back upper elbow.

12. The foldable and Shu Tang improved seat frame as claimed in claim 11 wherein said back frame further comprises a recliner driving motor and said recliner driving motor drives a pair of recliners synchronously via said recliner synchronizing rod.

13. A foldable and Shu Tang improved seat frame as claimed in claim 4 wherein under no load condition the push rod drive motor is a low thrust drive motor; under the condition of load, the push rod driving motor is a high-thrust driving motor.

14. A foldable and Shu Tang improved seat frame as claimed in claim 4 wherein a back stroke limiting bracket is mounted on each of a pair of back lower attachment plates, each back stroke limiting bracket contacting each back side plate to limit said back frame in a reclining position when said back frame is flipped backwards to a reclining position.

15. A seat comprising a seat frame according to any one of claims 1 to 14.

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