Automobile seat with backrest capable of being put down and cushion capable of being lifted

Abstract

The utility model belongs to the technical field of seats, and particularly relates to an automobile seat with a backrest capable of being put down and a cushion capable of being lifted, the automobile seat comprises a cushion assembly and a backrest assembly hinged through a first rotating shaft, and a cushion lifting mechanism with the rear portion of the cushion capable of being lifted is arranged between the cushion assembly and the backrest assembly. The automobile seat has the advantages that when the backrest rotates backwards, the rear portion of the cushion is driven to be lifted, the waist of the human body is supported, the riding comfort is good, meanwhile, the backrest can be put down forwards so as to place large objects or long objects, and the automobile seat is used for an automobile seat.

Description

Technical Field

[0001] The invention belongs to the technical field of seats, and in particular relates to a car seat capable of laying down a backrest and lifting a seat cushion. Background Art

[0002] At present, when a passenger adjusts the backrest backward, due to the influence of the backrest rotation point, the lower end of the backrest is usually higher than the rear end of the seat cushion, resulting in a height difference. The occupant's waist has no support or is pressed against, affecting the user's riding comfort. Summary of the invention

[0003] The purpose of the present invention is to provide a car seat which can realize lifting of the rear part of the seat cushion when the backrest rotates backwards, and can also realize lifting of the seat cushion when the backrest is folded forwards.

[0004] The object of the present invention is to solve like this:

[0005] A car seat capable of folding down a backrest and lifting a seat cushion comprises a seat cushion assembly and a backrest assembly hingedly connected via a first rotating shaft, wherein a seat cushion lifting mechanism whose rear part can be raised and lowered is arranged between the seat cushion assembly and the backrest assembly.

[0006] As a further optimization of the above technical solution, the seat cushion assembly and the backrest assembly both include a left side wall, a right side wall and a cross bar connected between the left and right side walls, and the seat cushion lifting mechanism is arranged between the left and right side walls of the seat cushion assembly and the backrest assembly.

[0007] As a further optimization of the above technical solution, the seat cushion lifting mechanism is located at the upper rear part of the seat cushion assembly.

[0008] As a further optimization of the above technical solution, sliding blocks are fixed on both sides of the lower part of the seat cushion assembly, and the sliding blocks are slidably arranged on the sliding rails on the lower side of the sliding blocks.

[0009] As a further optimization of the above technical solution, the specific structure of the seat cushion lifting mechanism is: a driving arm is extended downward from the first rotating shaft on the left and right side walls of the backrest assembly and rotates synchronously with the backrest assembly, and a driving pin is provided at the end of the driving arm. One end of the lifting connecting rod is hinged to the upper rear part of the left and right side walls of the seat cushion assembly, and the other end of the lifting connecting rod is hinged to one end of the seat cushion connecting rod, and the other end of the seat cushion connecting rod is hinged to the middle part of the left and right side walls of the seat cushion assembly. The left and right seat cushion connecting rods are fixedly connected by two laterally arranged cross tubes, and the driving pin can be in contact with the lower surface of the lifting connecting rod when rotating.

[0010] As a further optimization of the above technical solution, the two transverse tubes include a front transverse tube and a rear transverse tube, and a lumbar support plate is connected to the rear transverse tube.

[0011] As a further optimization of the above technical solution, the two transverse tubes are connected to form a U-shaped lifting frame through two longitudinal tubes, and the front parts of the two longitudinal tubes are fixed with front connecting parts extending outward and forward, which are respectively hinged to the middle parts of the left and right side walls of the seat cushion assembly through the hinge holes on the front connecting parts, and the rear parts of the two longitudinal tubes are fixed with rear connecting parts extending upward and backward, which are respectively hinged to the other end of the lifting connecting rod through the hinge holes on the rear connecting parts, and the longitudinal tubes, transverse tubes and the front connecting parts and rear connecting parts constitute the seat cushion connecting rod.

[0012] As a further optimization of the above technical solution, one end of a return spring is connected to the seat cushion connecting rod or the lifting connecting rod at the hinge of the seat cushion connecting rod and the lifting connecting rod, and the other end of the return spring is connected to the rear lower side of the left and right side walls of the seat cushion assembly, and the return spring always has a return force to pull the hinge of the lifting connecting rod and the seat cushion connecting rod downward.

[0013] As a further optimization of the above technical solution, the front part of the lifting link is provided with a sliding connection part extending downward and forward, and the sliding connection part is provided with a strip hole or an arc hole, the hinge hole on the rear connection part of the cushion link is hingedly connected to the strip hole or the arc hole on the sliding connection part through a hinge shaft, and the hinge shaft can slide in the strip hole or the arc hole.

[0014] As a further optimization of the above technical solution, the articulated shaft is a stepped bolt.

[0015] When the backrest assembly of the seat rotates backward, the driving pin contacts the lower surface of the lifting link and pushes the lifting link to rotate counterclockwise around the hinge axis A. The seat cushion lifting mechanism is a symmetrical structure. The sliding connection part of the lifting link is provided with a strip hole or an arc hole (slide groove). When the lifting link rotates around the hinge axis A, the slide groove drives the step bolt to move in the slide groove. The step bolt is hinged with the seat cushion link, so that the seat cushion link rotates around the hinge axis B, so that the backrest can be tilted backward and the seat cushion can be lifted at the same time.

[0016] The backrest assembly rotates forward, and under the action of the return spring (tension spring), the seat cushion rotates counterclockwise around the hinge axis B and returns to the designed state; when the backrest continues to rotate forward, the drive pin disengages from the lifting link, and the seat cushion remains stationary under the action of the tension spring, so that the backrest can be folded forward without affecting the seat cushion.

[0017] As can be seen from the above, the outstanding advantages of the present invention compared with the prior art are: the backrest can be rotated backward to drive the rear part of the seat cushion to rise, thereby supporting the human waist and providing good riding comfort; at the same time, the backrest can be folded forward to place large or long objects; it is particularly suitable for car seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0019] Figure 2 It is a three-dimensional schematic diagram of the seat cushion lifting mechanism of the present invention.

[0020] Figure 3 It is a front view of the backrest assembly of the present invention at a normal angle.

[0021] Figure 4 It is a front view of the backrest assembly of the present invention after being folded backwards.

[0022] Figure 5 It is a front view of the backrest assembly of the present invention after being folded forward. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1-Figure 5 :

[0024] It is particularly important to explain that the following front, back, left, right, up, and down directions refer to the backrest as the back and the position where the seat cushion is sat on as the front. When standing behind the backrest and facing the seat cushion, the left and right hand directions are the left and right, the ground is the bottom, and the direction vertically upward from the ground is the top.

[0025] A car seat capable of folding down a backrest and lifting a seat cushion comprises a seat cushion assembly 10 and a backrest assembly 20 hingedly connected via a first rotating shaft 40, wherein a seat cushion lifting mechanism 30 whose rear portion of the seat cushion can be raised and lowered is arranged between the seat cushion assembly 10 and the backrest assembly 20.

[0026] As a further optimization of the above technical solution, the seat cushion assembly 10 and the backrest assembly 20 both include a left side wall, a right side wall and a cross bar connected between the left and right side walls, and the seat cushion lifting mechanism 30 is arranged between the left and right side walls of the seat cushion assembly 10 and the backrest assembly 20.

[0027] As a further optimization of the above technical solution, the seat cushion lifting mechanism 30 is located at the upper rear portion of the seat cushion assembly 10 .

[0028] As a further optimization of the above technical solution, sliders 60 are fixed to both sides of the lower part of the seat cushion assembly 10 , and the sliders 60 are slidably arranged on slide rails 61 on the lower side of the sliders 60 .

[0029] As a further optimization of the above technical solution, the specific structure of the seat cushion lifting mechanism 30 is: a driving arm 21 is located on the left and right side walls of the backrest assembly 20 and extends downward from the first rotating shaft 40, and rotates synchronously with the backrest assembly 20. A driving pin 22 is provided at the end of the driving arm 21. One end of the lifting link 31 is hinged to the upper rear part of the left and right side walls of the seat cushion assembly 10 through a hinge shaft A, and the other end of the lifting link 31 is hinged to one end of the cushion link 32 through a hinge shaft B, and the other end of the cushion link 32 is hinged to the middle part of the left and right side walls of the seat cushion assembly 10 through a hinge shaft C. The left and right cushion links 32 are fixedly connected by two laterally arranged cross tubes, and the driving pin 22 can be in contact with the lower surface of the lifting link 31 when rotating.

[0030] Of course, the specific structure of the seat cushion lifting mechanism 30 can also be: a seat cushion connecting rod 32 is hinged in the middle of the left and right side walls of the seat cushion assembly, respectively, and the seat cushion connecting rod 32 is fixedly connected by two transversely arranged cross tubes on the front and rear sides, and the rear part of the seat cushion connecting rod 32 is connected to a power device that drives the seat cushion connecting rod 32 to rotate around the hinge axis between the seat cushion connecting rod 32 and the middle part of the left and right side walls of the seat cushion assembly to thereby lift the rear part of the seat cushion, and the power device is a transmission mechanism linked by a cylinder, an oil cylinder or a motor.

[0031] As a further optimization of the above technical solution, the two transverse tubes include a front transverse tube 321 and a rear transverse tube 323 , and a lumbar support plate 327 is connected to the rear transverse tube 323 .

[0032] As a further optimization of the above technical solution, the two transverse tubes 321, 323 are connected to form a U-shaped lifting frame through two longitudinal tubes 322, 324, and the front parts of the two longitudinal tubes are fixed with front connecting parts 325 extending outward and forward, and are respectively hinged to the middle parts of the left and right side walls of the seat cushion assembly 10 through the hinge shaft C inserted into the hinge hole on the front connecting part 325, and the rear parts of the two longitudinal tubes 322, 324 are fixed with rear connecting parts 326 extending upward and backward, and are respectively hinged to the other end of the lifting connecting rod 31 through the hinge shaft B through the hinge hole on the rear connecting part 326. The longitudinal tubes 322, 324, transverse tubes 321, 323 and the front connecting part 325 and the rear connecting part 326 constitute the seat cushion connecting rod 32.

[0033] As a further optimization of the above technical solution, one end of a return spring 50 is connected to the seat cushion link 32 or the lifting link 31 at the hinge between the seat cushion link 32 and the lifting link 31, and the other end of the return spring 50 is connected to the rear lower side of the left and right side walls of the seat cushion assembly 10. The return spring 50 always has a return force to pull the hinge between the lifting link 31 and the seat cushion link 32 downward.

[0034] As a further optimization of the above technical solution, the front part of the lifting link 31 is provided with a sliding connection part extending downward and forward, and the sliding connection part is provided with a strip hole 311 or an arc hole, and the hinge hole on the rear connection part of the cushion link 32 is hingedly connected to the strip hole 311 or the arc hole on the sliding connection part through a hinge shaft B, and the hinge shaft B can slide in the strip hole or the arc hole.

[0035] As a further optimization of the above technical solution, the hinge shaft B is a step bolt.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions or technical features described in the aforementioned embodiments can still be simply replaced or modified with similar technologies, and these simple replacements or modifications do not deviate the essence of the corresponding technical solutions from the spirit and essence of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.

Claims

1. A car seat with a backrest that can be folded down and a seat cushion that can be raised, comprising a seat cushion assembly and a backrest assembly that is hingedly connected via a first rotating shaft, characterized in that: A seat cushion lifting mechanism whose rear part can be raised and lowered is arranged between the seat cushion assembly and the backrest assembly.

2. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 1, characterized in that: The seat cushion assembly and the backrest assembly both include a left side wall, a right side wall and a crossbar connected between the left and right side walls, and the seat cushion lifting mechanism is arranged between the left and right side walls of the seat cushion assembly and the backrest assembly.

3. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 1, characterized in that: The seat cushion lifting mechanism is located at the upper rear portion of the seat cushion assembly.

4. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 1, characterized in that: Slide blocks are fixed on both sides of the lower part of the seat cushion assembly, and the slide blocks are slidably arranged on slide rails on the lower side of the slide blocks.

5. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 1, characterized in that: The specific structure of the seat cushion lifting mechanism is: a driving arm extending downward from the first rotating shaft on the left and right side walls of the backrest assembly and rotating synchronously with the backrest assembly, a driving pin is provided at the end of the driving arm, one end of the lifting connecting rod is hinged to the upper rear part of the left and right side walls of the seat cushion assembly, the other end of the lifting connecting rod is hinged to one end of the seat cushion connecting rod, and the other end of the seat cushion connecting rod is hinged to the middle part of the left and right side walls of the seat cushion assembly, the left and right seat cushion connecting rods are fixedly connected by two laterally arranged cross tubes, and the driving pin can be in contact with the lower surface of the lifting connecting rod when rotating.

6. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 5, characterized in that: The two transverse tubes include a front transverse tube and a rear transverse tube, and a waist support plate is connected to the rear transverse tube.

7. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 5, characterized in that: The two transverse tubes are connected to form a U-shaped lifting frame through two longitudinal tubes. The front parts of the two longitudinal tubes are fixed with front connecting parts extending outward and forward, which are respectively hinged to the middle parts of the left and right side walls of the seat cushion assembly through hinge holes on the front connecting parts. The rear parts of the two longitudinal tubes are fixed with rear connecting parts extending upward and backward, which are respectively hinged to the other end of the lifting connecting rod through hinge holes on the rear connecting parts. The longitudinal tubes, transverse tubes and the front connecting parts and rear connecting parts constitute the seat cushion connecting rod.

8. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 5, characterized in that: One end of a return spring is connected to the cushion connecting rod or the lifting connecting rod at the hinged joint of the cushion connecting rod and the lifting connecting rod, and the other end of the return spring is connected to the rear lower side of the left and right side walls of the seat cushion assembly. The return spring always has a return force to pull the hinged joint of the lifting connecting rod and the cushion connecting rod downward.

9. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 8, characterized in that: The front part of the lifting link is provided with a sliding connection part extending downward and forward, and the sliding connection part is provided with a strip hole or an arc hole. The hinge hole on the rear connection part of the cushion link is hingedly connected to the strip hole or the arc hole on the sliding connection part through a hinge shaft, and the hinge shaft can slide in the strip hole or the arc hole.

10. The automobile seat capable of reclining the backrest and raising the seat cushion according to claim 9, characterized in that: The hinge shaft is a stepped bolt.

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