Folding seat cushion

Abstract

The utility model relates to a folding seat and back cushion which comprises a seat cushion and a backrest, the backrest comprises a lower backrest and an upper backrest, and the lower backrest, the upper backrest and the seat cushion are connected through a support; the support comprises a seat cushion support arranged on one side of the seat cushion, a lower backrest support arranged on one side of the lower backrest and an upper backrest support arranged on one side of the upper backrest, the lower backrest support is connected with the seat cushion support through an angle regulator, and the lower backrest support is connected with the upper backrest support through a self-locking telescopic suite. The seat cushion is connected with the backrest through the angle adjuster, so that the requirements of adjusting the angle of the backrest in a sitting posture and lying flat are met; the backrest adopts a combined structure of the lower backrest and the upper backrest, so that the upper backrest can be lifted to extend the supporting height; especially, a self-locking telescopic suite is adopted for lifting adjustment, the detachable characteristic is achieved, and storage and transportation are convenient.

Description

Technical field:

[0001] The utility model belongs to the field of daily necessities, and in particular relates to a foldable seat cushion, particularly a detachable and angle-adjustable solution. Background technology:

[0002] CN201620176172.9 discloses a portable sleeping cushion, comprising a headrest, a seat cushion, and a retractable support. The seat cushion is located at the bottom of the support. The headrest comprises a matching headrest and support. The headrest consists of a U-shaped neck pillow and a face support with a closed U-shaped opening. The support consists of a support rod for supporting the neck pillow and a rotating rod for supporting the face support. One end of the rotating rod is hinged to one support rod, and the other end is hung on the other support rod. The middle part of the support rod is hinged to the top of the support. One side is provided with a positioning hook that can be supported and fixed on the support. A connecting belt and a backrest are provided between the two supports. This patent solves the problem of effectively supporting the cervical spine and chin while sitting or resting, preventing the head from swinging, but it obviously has the limitation of not being able to lie flat.

[0003] How to provide a more reasonable technical solution becomes the research object of this invention. Summary of the invention:

[0004] The utility model aims to design a folding sitting cushion with a backrest that can adjust the angle and height and can also be laid down to lie flat.

[0005] The technical solution of the present utility model is achieved as follows: a folding seat cushion, comprising a seat cushion and a backrest, characterized in that the backrest comprises a lower backrest and an upper backrest, and the three are connected to the seat cushion through a bracket; the bracket comprises a seat cushion bracket arranged on one side of the seat cushion, a lower backrest bracket arranged on the side of the lower backrest and an upper backrest bracket arranged on the side of the upper backrest, the lower backrest bracket and the seat cushion bracket are connected through an angle adjuster, and the lower backrest bracket and the upper backrest bracket are connected through a self-locking telescopic kit.

[0006] The seat cushion bracket is provided with a self-locking telescopic kit and then connected to the angle adjuster.

[0007] The self-locking telescopic kit in the bracket includes an outer tube column, an inner column and an elastic locking pin arranged at the end of the outer tube column. The elastic locking pin includes a hollow plug, a locking tongue and a spring. The hollow plug is horizontally formed with a locking cavity, and a pin with a barb extends downward from the end face. It is inserted into the outer tube column with the help of two pins, and is positioned at the end of the outer tube column by using the barb at the end; the locking tongue is placed in the locking cavity, and the spring is arranged between the bottom of the lock cavity and the locking tongue, always maintaining the misalignment between the hollow part on the locking tongue and the hollow part of the hollow plug, so as to be clamped in the annular groove on the surface of the inner column to form self-positioning.

[0008] The bracket is a symmetrical double-column support structure. The seat cushion bracket has a rectangular frame, and two outer tube columns are symmetrically arranged on a beam of the rectangular frame; the lower backrest bracket has a ridge frame, and two outer tube columns are symmetrically arranged on the crossbeam of the ridge frame, and the two ridge frame feet are respectively connected to the angle adjuster; an upper crossbeam is connected between the two inner columns of the upper backrest bracket.

[0009] The seat cushion, upper backrest and lower backrest are all made of plastic or high-density sponge. The seat cushion has upward-curved hip protection wings on both sides. The upper backrest is wider and higher than the lower backrest. The lower half overlaps with the lower backrest, and a sunken part is formed in the overlapping section. The lower backrest can fit in the sunken part. The self-locking telescopic kit connecting the lower backrest bracket and the upper backrest bracket is arranged in the overlapping part of the downward projection of the two.

[0010] The seat cushion and backrest of the utility model are connected by an angle adjuster to meet the needs of adjusting the backrest angle of sitting and lying flat; and the backrest adopts a combined structure of a lower backrest and an upper backrest, so that the upper backrest can be raised and lowered to extend the support height; in particular, the lifting adjustment adopts a self-locking telescopic kit, which is also detachable, which is convenient for storage and transportation. Description of the drawings:

[0011] The present invention will be further described below with reference to specific figures:

[0012] Figure 1 Diagram of folding seat cushion

[0013] Figure 2 A side view of a folding seat cushion

[0014] Figure 3 Schematic diagram of the rising and lying state changes

[0015] Figure 4 Schematic diagram of the bracket

[0016] Figure 5 Schematic diagram of the self-locking telescopic kit

[0017] Figure 6 Schematic diagram of the self-locking telescopic kit

[0018] in

[0019] 1 - seat cushion; 11 - seat cushion bracket; 12 - hip wing;

[0020] 2—lower backrest; 21—lower backrest bracket;

[0021] 3—upper backrest; 31—upper backrest bracket; 32—upper crossbeam; 33—sinking part;

[0022] 4—Angle adjuster;

[0023] 5—Self-locking telescopic kit; 51—Outer pipe column; 52—Inner pipe column; 53—Elastic locking pin; 531—Hollow plug;

[0024] 532 - lock tongue; 533 - spring; 534 - lock cavity; 535 - pin; 536 - barb; Specific implementation method:

[0025] Reference Figures 1 to 6 The folding seat cushion includes a seat cushion 1, a lower backrest 2, an upper backrest 3 and a bracket connecting the three; the bracket includes a seat cushion bracket 11 arranged on one side of the seat cushion, a lower backrest bracket 21 arranged on the side of the lower backrest and an upper backrest bracket 31 arranged on the side of the upper backrest, wherein the lower backrest bracket 21 is connected to the seat cushion bracket 11 through an angle adjuster 4 to achieve angle adjustment; and the lower backrest bracket 21 is connected to the upper backrest bracket 31 through a self-locking telescopic kit 5, which can make the upper backrest bracket 31 rise and fall to increase the support height or the length after lying flat.

[0026] Furthermore, the seat cushion bracket 11 is provided with a self-locking telescopic kit 5 and then connected to the angle adjuster 4, so that the distance between the seat cushion 1 and the lower backrest 2 can be properly adjusted to increase the depth of the seat cushion 1, such as Figure 3 .

[0027] like Figure 5 and Figure 6 The self-locking telescopic kit 5 comprises an outer column 51, an inner column 52, and an elastic locking pin 53 disposed at the end of the outer column. The elastic locking pin 53 further comprises a hollow plug 531, a locking tongue 532, and a spring 533. More specifically, the hollow plug 531 is formed with a locking cavity 534 transversely, and a pin 535 with a barb extends downward from the end surface. The two pins 535 are inserted into the outer column 51, and the barb 536 at the end is used to lock the end of the outer column 51 to form a position. During assembly, it can be inserted by hand without the need for tools to press the pipe fitting. The locking tongue 532 is placed in the locking cavity 534, and the spring 533 is disposed between the bottom of the locking cavity and the locking tongue 532, always maintaining the misalignment between the hollow portion of the locking tongue 532 and the hollow portion of the hollow plug 531, so that it is locked in the annular groove on the surface of the inner column 52 to form a self-positioning function.

[0028] Furthermore, in order to achieve more stable connection and support, the bracket is a symmetrical double-column support structure. The seat cushion bracket 11 has a rectangular frame, and two outer tube columns 51 are symmetrically arranged on a beam of the rectangular frame; the lower backrest bracket 21 has a bevel frame, and two outer tube columns 51 are symmetrically arranged on the crossbeam of the bevel frame, and the two bevel frame feet are respectively connected to the angle adjuster 4; the two inner columns 52 of the upper backrest bracket 31 are connected with an upper crossbeam 32, providing a connection between the two isolated inner columns.

[0029] The seat cushion 1, upper backrest 3 and lower backrest 2 mentioned above are all made of plastic or high-density sponge. The seat cushion 1 has upward-curved hip protection wings 12 on both sides, which can wrap around the buttocks after sitting down; the upper backrest 3 is wider and higher than the lower backrest 2, and the lower half overlaps with the lower backrest 2, and a sunken part 33 is formed in the overlapping section. The lower backrest 2 can fit in the sunken part 33, that is, the rear part can be hidden in the upper backrest 3, and the self-locking telescopic kit 5 connecting the lower backrest bracket 21 and the upper backrest bracket 31 is arranged in the overlapping part of the downward projection of the two, which is not abrupt even after being raised. At least the upper backrest 3 can form a backward support for the head after being raised, and the more protruding lower backrest 2 can contact the forward arched waist, which is also in line with ergonomic design.

[0030] The angle adjuster 4 and the self-locking telescopic kit 5 are both conventional existing technologies, and are also mass-produced products available on the market, and can be used as alternatives.

Claims

1. A folding seat cushion, comprising a seat cushion and a backrest, characterized in that: The backrest includes a lower backrest and an upper backrest, and is connected to the seat cushion through a bracket; the bracket includes a seat cushion bracket arranged on one side of the seat cushion, a lower backrest bracket arranged on one side of the lower backrest, and an upper backrest bracket arranged on one side of the upper backrest; the lower backrest bracket is connected to the seat cushion bracket through an angle adjuster, and the lower backrest bracket is connected to the upper backrest bracket through a self-locking telescopic kit.

2. A folding seat cushion according to claim 1, characterized in that: The seat cushion bracket is provided with a self-locking telescopic kit and then connected to the angle adjuster.

3. A folding seat cushion according to claim 1 or 2, characterized in that: The self-locking telescopic kit in the bracket includes an outer tube column, an inner column and an elastic locking pin arranged at the end of the outer tube column. The elastic locking pin includes a hollow plug, a locking tongue and a spring. The hollow plug is horizontally formed with a locking cavity, and a pin with a barb extends downward from the end face. It is inserted into the outer tube column with the help of two pins, and is positioned at the end of the outer tube column by using the barb at the end; the locking tongue is placed in the locking cavity, and the spring is arranged between the bottom of the lock cavity and the locking tongue, always maintaining the hollow part on the locking tongue and the hollow part of the hollow plug misaligned, so as to be clamped in the annular groove on the surface of the inner column to form self-positioning.

4. The folding seat cushion according to claim 3, characterized in that: The support structure is a symmetrical double-column support structure. The seat support has a rectangular frame with two outer columns symmetrically arranged on a beam of the rectangular frame. The lower backrest support has a ridge frame with two outer columns symmetrically arranged on the crossbeam of the ridge frame. The two ridge frame feet are respectively connected to the angle adjuster. An upper crossbeam is connected between the two inner columns of the upper backrest bracket.

5. The foldable seat cushion according to claim 1, characterized in that: The seat cushion, upper backrest and lower backrest are all made of plastic or high-density sponge. There are hip protection wings on both sides of the seat cushion. The upper backrest is wider and higher than the lower backrest. The lower half overlaps with the lower backrest, and a sunken part is formed in the overlapping section. The lower backrest can fit in the sunken part. The self-locking telescopic kit connecting the lower backrest bracket and the upper backrest bracket is arranged in the overlapping part of the downward projection of the two.

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