Folding seat facilitating storage of seat cushion and writing board

Abstract

The utility model discloses a folding seat convenient for storage of a seat cushion and a writing board, which belongs to the technical field of folding seats and comprises a bottom frame and moving wheels arranged above the bottom frame and used for supporting, a mounting frame is mounted at the top ends of the moving wheels, and a backrest is mounted at the top end of the mounting frame. And a limiting block is slidably installed in the transmission shaft in a penetrating mode, one end of the limiting block penetrates and extends to the outer side of the transmission shaft, and one end of the limiting block penetrates and extends to the interior of the sleeve base. According to the folding seat facilitating storage of the cushion and the writing board, the transmission shaft is arranged, the transmission shaft is installed at the outer end of the connecting rod, then the sleeve base is rotationally connected to the outer side of the transmission shaft, and when the writing board needs to be turned over for use, only the writing board needs to be swung to drive the sleeve base to rotate on the outer side of the transmission shaft; and at the moment, the limiting block can be automatically popped out into the first limiting groove through the elastic force of the spring by extruding the spring, so that the overturned sleeve seat can be positioned and fixed.

Description

Technical Field

[0001] This utility model relates to the field of folding chair technology, specifically a folding chair that facilitates the storage of seat cushions and writing boards. Background Technology

[0002] Folding chairs are designed to be easy to move and save space. They typically have a foldable structure, allowing them to be easily folded up and stored when not in use. Due to their portability, space-saving, and versatility, they are widely used in outdoor activities and public places. However, traditional folding chairs do not have a limiting mechanism to prevent the seat cushion from flipping and being locked when folded. This can lead to the chair becoming loose and unstable when used by the user, resulting in poor stability.

[0003] To overcome the above-mentioned defects, in the existing technology 1 (Chinese patent application number CN201921030077.8, application date 2019-07-03), the front leg tube is embedded into the lower ring after passing through the lower interface. A clamping device is used to press the lower ring, front leg tube, and rubber pad together. When the seat needs to be folded up, it rotates around the hinge of the front leg tube, rear leg tube, and seat tube, so that the rear leg tube and seat tube are respectively against the two sides of the square frame formed by the front leg tube. When the rear leg tube rotates, it can be inserted into the upper ring through the connecting port to achieve locking between the front leg tube and the rear leg tube. When it is necessary to fish outdoors or set up a flag, the clip is placed on one side of the front leg tube, and the flagpole or other rod-shaped device can be inserted into the upper ring. Although the existing technology can improve the stability of the seat cushion when flipped, it does not have a limiting mechanism to limit the flipping of the writing board when it is flipped, which will cause the writing board to loosen and fall off during use, resulting in poor stability.

[0004] Therefore, a folding chair that facilitates the storage of cushions and writing boards has been proposed, which can effectively solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a folding chair that facilitates the storage of cushions and writing boards, in order to solve the problem mentioned in the background art that the writing boards currently on the market do not have a limiting mechanism to limit their flipping and flipping, which leads to the writing boards becoming loose and falling off during use, resulting in poor stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a folding chair for convenient storage of a cushion and writing board, comprising a base frame and movable wheels arranged above the base frame for support, wherein a mounting bracket is installed at the top of the movable wheels, and a backrest is installed at the top of the mounting bracket, while movable wheels are installed at both ends of the bottom of the base frame; a connecting rod is installed at the rear end of the base frame, and a drive shaft is installed at the top of the connecting rod, wherein a sleeve is installed through the outer side of the drive shaft, and a writing board is installed through the outer side of the sleeve, wherein a pressing rod is slidably installed through one end of the drive shaft; a limiting block is slidably installed through the inside of the drive shaft, wherein one end of the limiting block extends through to the outer side of the drive shaft, and one end of the limiting block extends through to the inside of the sleeve.

[0007] Preferably, a compression spring is installed inside the drive shaft, and one end of the compression spring is connected to a limit block.

[0008] Preferably, the sleeve has a first limiting groove and a second limiting groove respectively at its two internal ends, and the first limiting groove and the second limiting groove have the same size, and the first limiting groove, the second limiting groove and the limiting block form a locking structure.

[0009] Preferably, the other end of the limiting block is connected to a pull rope, and one end of the pull rope is connected to a pressing rod via a guide wheel.

[0010] Preferably, a return spring is wound around the outside of the pressing rod, and one end of the return spring is connected to a drive shaft.

[0011] Preferably, a mounting rod is installed at the top of the base frame, and rotatable seats are rotatably installed on both sides of the mounting rod. The two rotatable seats have the same structure and are positioned on both sides of the bottom of the seat cushion.

[0012] Preferably, the bottom sides of the cushion are also equipped with limiting seats, and the bottom ends of the two limiting seats are semi-circular, and the bottom ends of the two limiting seats are engaged with limiting rods, wherein the limiting rods are installed at the top of the base frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] (1) A drive shaft is provided. The drive shaft is installed at the outer end of the connecting rod, and a sleeve is rotatably connected to the outside of the drive shaft. When the writing board needs to be flipped, the writing board is simply swung to drive the sleeve to rotate on the outside of the drive shaft. At this time, the limit block can be automatically popped into the first limit groove by squeezing the spring through its own elasticity. This allows the sleeve to be positioned and fixed after flipping, preventing the writing board from becoming loose and falling off later, thus improving stability.

[0015] (2) Furthermore, when the writing board needs to be folded and stored, simply squeeze the pressing rod to drive the pull rope through the guide wheel to pull the limit block to retract and move, so that the limit block retracts and moves into the inside of the drive shaft, thus making it easy for the writing board to flip over on the outside of the drive shaft through the sleeve, making it easier to fold and store the writing board later, and the operation is more time-saving and labor-saving.

[0016] (3) Furthermore, after the writing board is folded and stored, the pressing rod is released. At this time, the reset spring will use its own elastic force to elastically reset the position of the pressing rod after the compression movement. At the same time, the compression spring will also use its own elastic force to automatically pop the limiting block into the second limiting groove, so as to limit and fix the writing board after folding and storing, which is more practical.

[0017] (4) A swivel is provided. An installation rod is provided above the base frame, and a seat cushion is rotatably connected to the outside of the installation rod through two swivels. When the seat cushion needs to be folded and stored, the seat cushion can be rotated on the outside of the installation rod through the two swivels, so that the seat cushion can be flipped and stored inside the backrest, so that the folding seat can be carried and transported later.

[0018] (5) Furthermore, when it is necessary to use the cushion to sit, simply swing the cushion to rotate on the outside of the mounting rod through the two swivels. At this time, the limiting seats set on both sides of the bottom of the cushion will connect and limit the mounting rod set on the base frame, so as to prevent the cushion from becoming loose and shaking due to sitting after being flipped over, thus improving stability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the seat cushion and writing board after folding and storing.

[0021] Figure 3 This is a three-dimensional structural diagram of the folding seat of this utility model.

[0022] Figure 4 This is a side view of the three-dimensional structure of the writing board and its base of this utility model;

[0023] Figure 5 This is a partial cross-sectional perspective view of the three-dimensional structure of the sleeve and transmission shaft of this utility model;

[0024] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0025] In the diagram: 1. Base frame; 2. Casters; 3. Mounting bracket; 4. Backrest; 5. Seat cushion; 6. Writing board; 7. Mounting rod; 8. Rotary seat; 9. Limiting seat; 10. Limiting rod; 11. Connecting rod; 12. Sleeve; 13. Drive shaft; 14. Pressing rod; 15. Return spring; 16. Pull rope; 17. Compression spring; 18. Limiting block; 19. First limiting groove; 20. Second limiting groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides the following technical solution: a folding chair that facilitates the storage of seat cushions and writing boards.

[0028] Example 1: To address the problem that existing writing tablets 6, when flipped, lack a limiting mechanism to prevent them from shifting and falling off during use, resulting in poor stability, the following solution is disclosed: a base frame 1, and movable wheels 2 positioned above the base frame 1 for support. A mounting bracket 3 is mounted on the top of the movable wheels 2, and a backrest 4 is mounted on the top of the mounting bracket 3. Movable wheels 2 are mounted at both ends of the bottom of the base frame 1. A connecting rod 11 is mounted at the rear end of the base frame 1, and a drive shaft 13 is mounted on the top of the connecting rod 11. A sleeve 12 is installed through the outer side of the drive shaft 13, and the writing tablet 6 is mounted on the outer side of the sleeve 12. A pressing rod 14 is slidably mounted through one end of the drive shaft 13. A limiting block 18 is slidably mounted through the inside of the drive shaft 13, with one end of the limiting block 18 extending through to the outer side of the drive shaft 13 and the other end extending through to the inside of the sleeve 12.

[0029] A compression spring 17 is installed inside the drive shaft 13, and one end of the compression spring 17 is connected to a limit block 18. The sleeve 12 has a first limit groove 19 and a second limit groove 20 respectively opened at both ends inside. The first limit groove 19 and the second limit groove 20 have the same size. The first limit groove 19, the second limit groove 20 and the limit block 18 form a locking structure. The other end of the limit block 18 is connected to a pull rope 16, and one end of the pull rope 16 is connected to a pressing rod 14 through a guide wheel. A return spring 15 is wound around the outside of the pressing rod 14, and one end of the return spring 15 is connected to the drive shaft 13.

[0030] like Figures 1-6As shown, when the writing tablet 6 needs to be flipped and folded for storage, simply squeeze the pressing rod 14 to retract and move it inside the drive shaft 13. At this time, the retracting drive shaft 13 will drive the pull rope 16 to pull the limiting block 18 through the guide wheel to retract and move it, so that the limiting block 18 is separated from the second limiting groove 20. Thus, the writing tablet 6 can be flipped and folded for storage through the sleeve 12. The operation is more time-saving and labor-saving. After the writing tablet 6 is flipped and folded, the return spring 15 will reset the pressed pressing rod 14 through its own elasticity. Then, the compression spring 17 will also automatically pop the limiting block 18 into the first limiting groove 19 through its own elasticity, so that the writing tablet 6 can be limited and fixed after folding and storage. Conversely, when the limiting block 18 is engaged and connected with the second limiting groove 20, the writing tablet 6 can be limited and fixed, avoiding the phenomenon of the writing tablet 6 becoming loose and falling off during use, and the stability is better.

[0031] Example 2 differs from Example 1 in that the seat cushion 5 can be fixed in place by two limiting seats 9 while it is being used in a flip-over manner, preventing the seat cushion 5 from shaking and becoming unstable during later use. This improves its practicality. The following is disclosed:

[0032] A mounting rod 7 is installed at the top of the base frame 1, and rotating seats 8 are rotatably installed on both sides of the mounting rod 7. The two rotating seats 8 have the same structure and are positioned on both sides of the bottom of the seat cushion 5. Limiting seats 9 are also installed on both sides of the bottom of the seat cushion 5. The bottom ends of the two limiting seats 9 are semi-circular, and the bottom ends of the two limiting seats 9 are engaged with limiting rods 10, which are installed at the top of the base frame 1.

[0033] like Figures 1-3 As shown, when the cushion 5 needs to be folded and stored, simply flip the cushion 5 over and rotate it on the outside of the mounting rod 7 via the two rotating seats 8. This allows the cushion 5 to be easily flipped and folded for storage, making the cushion 5 fit snugly together for easy carrying and transportation, thus improving its practicality. Conversely, when the cushion 5 needs to be used for sitting, simply flip the cushion 5 over and rotate it so that the limiting seats 9 at both ends of the bottom of the cushion 5 are matched with the limiting rod 10 installed on the top of the base frame 1, preventing the cushion 5 from becoming loose or wobbly when sitting, thus improving its stability.

[0034] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] The contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A folding chair that facilitates the storage of cushions and writing boards, comprising a base frame (1) and movable wheels (2) provided above the base frame (1) for support, wherein a mounting bracket (3) is installed at the top of the movable wheels (2) and a backrest (4) is installed at the top of the mounting bracket (3), and movable wheels (2) are installed at both ends of the bottom of the base frame (1). Its features are: A connecting rod (11) is installed at the rear end of the base frame (1), and a drive shaft (13) is installed at the top end of the connecting rod (11). A sleeve (12) is installed through the outside of the drive shaft (13), and a writing board (6) is installed on the outside of the sleeve (12). A pressing rod (14) is slidably installed through one end of the drive shaft (13). A limiting block (18) is slidably installed inside the drive shaft (13), with one end of the limiting block (18) extending through to the outside of the drive shaft (13) and the other end of the limiting block (18) extending through to the inside of the sleeve (12).

2. A folding chair for convenient storage of cushions and writing boards according to claim 1, characterized in that: A compression spring (17) is installed inside the drive shaft (13), and one end of the compression spring (17) is connected to a limit block (18).

3. A folding chair for convenient storage of cushions and writing boards according to claim 1, characterized in that: The sleeve (12) has a first limiting groove (19) and a second limiting groove (20) respectively at its two internal ends. The first limiting groove (19) and the second limiting groove (20) have the same size. The first limiting groove (19), the second limiting groove (20) and the limiting block (18) form a locking structure.

4. A folding chair for convenient storage of cushions and writing boards according to claim 1, characterized in that: The other end of the limiting block (18) is connected to a pull rope (16), and one end of the pull rope (16) is connected to a pressing rod (14) via a guide wheel.

5. A folding chair for convenient storage of cushions and writing boards according to claim 4, characterized in that: A return spring (15) is wound around the outside of the pressing rod (14), and one end of the return spring (15) is connected to a drive shaft (13).

6. A folding chair for convenient storage of cushions and writing boards according to claim 1, characterized in that: The top of the base frame (1) is equipped with an installation rod (7), and rotatable seats (8) are rotatably installed on both sides of the installation rod (7). The two rotatable seats (8) have the same structure and are positioned on both sides of the bottom of the seat cushion (5).

7. A folding chair for convenient storage of cushions and writing boards according to claim 6, characterized in that: The bottom sides of the cushion (5) are also equipped with limiting seats (9), and the bottom ends of the two limiting seats (9) are semi-circular, and the bottom ends of the two limiting seats (9) are engaged with limiting rods (10), wherein the limiting rods (10) are installed at the top of the base frame (1).

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