Elastic folding chair

Abstract

The utility model discloses an elastic folding chair, which belongs to the technical field of folding chairs and comprises a plurality of front legs and back tubes mounted on the front legs, connecting sleeves are arranged on the back tubes, fourth connecting rods are mounted on the connecting sleeves, hinged supports are mounted at one ends of the fourth connecting rods, bottom legs are mounted on the hinged supports, and connecting pieces are mounted on the bottom legs. A spring piece is installed on the connecting piece, and a main connecting frame is installed on the spring piece. The main connecting frame, the auxiliary connecting frame and the pin shaft are installed in the middle of the spring piece, the front end and the middle of the spring piece are the first level of the spring piece, the tail of the middle of the spring piece is called the second level of the spring piece, when a human body sits normally, the first level of the spring piece is mainly used for bearing the weight of the human body, and when the human body leans backwards, the weight of the human body is reduced. Load generated by backward movement of the gravity center is mainly supported by the second stage of the spring piece.

Description

Technical Field

[0001] The utility model relates to a folding chair, in particular to an elastic folding chair, and belongs to the technical field of folding chairs. Background Art

[0002] The elastic folding chair is a type of chair, which can be folded for easy carrying when in use, and is elastic, so users can shake the chair when using it to achieve the effect of relaxing the body and mind.

[0003] However, in the existing elastic folding chair, when the human body leans back, the center of gravity moves backward, and the spring sheet is difficult to bounce the human body up. In addition, the spring sheet is generally thickened to enhance the elasticity, which will cause the deformation amount to become smaller when the human body leans back, affecting comfort. Utility Model Content

[0004] The main purpose of the utility model is to solve the problem that when a human body leans back, the center of gravity moves backward and the spring sheet is difficult to bounce the human body up.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A spring folding chair comprises a plurality of front feet and a back tube mounted on the front feet, wherein the back tube is provided with a connecting sleeve, a fourth connecting rod is mounted on the connecting sleeve, a hinge seat is mounted on one end of the fourth connecting rod, a base foot is mounted on the hinge seat, a connecting piece is mounted on the base foot, a spring sheet is mounted on the connecting piece, a main connecting frame is mounted on the spring sheet, the main connecting frame is located in the middle of the spring sheet, an auxiliary connecting frame is mounted on the main connecting frame, the main connecting frame and the auxiliary connecting frame are connected by a rear pin shaft, third connecting rods are mounted on the two front feet and the two back tubes, two of the third connecting rods are connected by a first cross piece, and the other two of the third connecting rods are connected by a second cross piece.

[0007] Preferably, the first cross member includes two first connecting rods, the two first connecting rods are cross-connected, one end of the first connecting rod is connected to the second connecting rod, and the first connecting rod is rotatably connected to the third connecting rod.

[0008] Preferably, the second cross member includes two second connecting rods, the two second connecting rods are cross-connected, and one end of the second connecting rod is connected to the back tube.

[0009] Preferably, one end of the first connecting rod is connected to one end of the second connecting rod.

[0010] Preferably, the main connecting frame is a U-shaped connecting frame.

[0011] Preferably, the auxiliary connecting frame is a U-shaped connecting frame.

[0012] Beneficial technical effects of the utility model: According to the elastic folding chair of the utility model, by installing the main connecting frame, the auxiliary connecting frame and the pin shaft in the middle of the spring sheet, the front end and the middle part of the spring sheet are the first level of the spring sheet, and the middle tail of the spring sheet is called the second level of the spring sheet. When the human body is in a normal sitting posture, the weight of the human body is mainly supported by the first level of the spring sheet. When the human body leans back, the load generated by the backward movement of the center of gravity is mainly supported by the second level of the spring sheet. At this time, the weight of the human body is supported by the first and second levels together. In this way, the human body can be well supported in both normal sitting postures and leaning back postures, and the auxiliary support of the second level can solve the problem that it is difficult for the human body to rebound after leaning back. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the elastic folding chair according to the utility model;

[0014] Figure 2 It is a schematic diagram of the spring sheet structure of a preferred embodiment of the elastic folding chair according to the utility model;

[0015] Figure 3 The figure is a schematic structural diagram of a main connecting frame and an auxiliary connecting frame according to a preferred embodiment of the elastic folding chair of the utility model.

[0016] In the figure: 1. front foot; 2. back tube; 3. hinge seat; 4. bottom foot; 5. connecting piece; 6. spring sheet; 7. main connecting frame; 8. auxiliary connecting frame; 9. pin shaft; 10. first connecting rod; 11. second connecting rod; 12. third connecting rod; 13. fourth connecting rod; 14. connecting sleeve. DETAILED DESCRIPTION

[0017] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0018] like Figure 1-Figure 3As shown, the elastic folding chair provided in this embodiment includes a plurality of front feet 1 and a back tube 2 installed on the front feet 1, a connecting sleeve 14 is provided on the back tube 2, a fourth connecting rod 13 is installed on the connecting sleeve 14, a hinge seat 3 is installed at one end of the fourth connecting rod 13, a bottom foot 4 is installed on the hinge seat 3, a connecting member 5 is installed on the bottom foot 4, a spring sheet 6 is installed on the connecting member 5, a main connecting frame 7 is installed on the spring sheet 6, the main connecting frame 7 is located in the middle of the spring sheet 6, an auxiliary connecting frame 8 is installed on the main connecting frame 7, the main connecting frame 7 and the auxiliary connecting frame 8 are connected by a rear pin shaft 9, and the two A third connecting rod 12 is installed on the front foot 1 and the two back tubes 2, wherein two third connecting rods 12 are connected by a first cross member, and the other two third connecting rods 12 are connected by a second cross member, the first cross member includes two first connecting rods 10, the two first connecting rods 10 are cross-connected, one end of the first connecting rod 10 is connected to the second connecting rod 11, the first connecting rod 10 is rotatably connected to the third connecting rod 12, the second cross member includes two second connecting rods 11, the two second connecting rods 11 are cross-connected, one end of the second connecting rod 11 is connected to the back tube 2, and the first connecting rod 10 is connected to the back tube 2. One end of the connecting rod 10 is connected to one end of the second connecting rod 11. By installing the main connecting frame 7, the auxiliary connecting frame 8 and the pin 9 in the middle of the spring sheet 6, the front end and the middle part of the spring sheet 6 are the first stage of the spring sheet 6, and the middle tail of the spring sheet 6 is called the second stage of the spring sheet 6. When the human body is in a normal sitting posture, the first stage of the spring sheet 6 mainly supports the weight of the human body. When the human body leans back, the load generated by the backward movement of the center of gravity is mainly supported by the second stage of the spring sheet 6. At this time, the weight of the human body is supported by the first and second stages together, so that the human body is in both normal sitting and leaning back postures. The second stage of the spring sheet 6 has different functions. The first stage mainly bears the downward pressure generated by the weight of the human body, and the second stage of the spring sheet 6 bears the pressure generated by the rotation of the chair around the pin 9. When the chair leans back, the second stage can support the weight of the human body and also help the human body to bounce up. In addition to the revolution around the front end of the spring sheet 6, the movement of the chair frame is also the rotation of the chair frame around the pin 9. The movement of the chair when leaning back is a compound movement of rotation and revolution.

[0019] In this embodiment, if Figure 2 and Figure 3 As shown, the main connecting frame 7 is a U-shaped connecting frame, and the auxiliary connecting frame 8 is a U-shaped connecting frame.

[0020] In this embodiment, if Figure 1-Figure 3 As shown, the working process of a spring folding chair provided in this embodiment is as follows:

[0021] Step 1: When the human body presses down the seat, the back tube 2 descends to squeeze the tail end of the spring sheet 6, and the first and second stages of the spring sheet 6 jointly support the seat;

[0022] Step 2: When the human body is in a normal sitting position, the first level of the spring sheet 6 supports the weight of the human body.

[0023] In summary, in this embodiment, according to the elastic folding chair of this embodiment, by installing the main connecting frame 7, the auxiliary connecting frame 8 and the pin 9 in the middle of the spring sheet 6, the front end and the middle part of the spring sheet 6 are the first level of the spring sheet 6, and the middle tail of the spring sheet 6 is called the second level of the spring sheet 6. When the human body is in a normal sitting posture, the first level of the spring sheet 6 mainly supports the weight of the human body. When the human body leans back, the load generated by the backward movement of the center of gravity is mainly supported by the second level of the spring sheet 6. At this time, the weight of the human body is supported by the first and second levels together, so that the human body is in both normal sitting and leaning back postures. The first and second stages of the spring sheet 6 have different functions. The first stage mainly bears the downward pressure generated by the weight of the human body, while the second stage of the spring sheet 6 bears the pressure generated by the rotation of the chair around the pin 9. When the chair leans back, the second stage can support the weight of the human body and help the human body to bounce up. In addition to the revolution around the front end of the spring sheet 6, the movement of the chair frame is also the rotation of the chair frame around the pin 9. The movement of the chair when leaning back is a compound movement of rotation and revolution.

[0024] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A spring folding chair, characterized in that: The invention comprises a plurality of front legs (1) and a back tube (2) mounted on the front legs (1); a connecting sleeve (14) is provided on the back tube (2); a fourth connecting rod (13) is mounted on the connecting sleeve (14); a hinge seat (3) is mounted on one end of the fourth connecting rod (13); a base (4) is mounted on the hinge seat (3); a connecting piece (5) is mounted on the base foot (4); a spring sheet (6) is mounted on the connecting piece (5); a main connecting rod (13) is mounted on the spring sheet (6); The main connecting frame (7) is located in the middle of the spring sheet (6), an auxiliary connecting frame (8) is installed on the main connecting frame (7), the main connecting frame (7) and the auxiliary connecting frame (8) are connected by a rear pin shaft (9), and third connecting rods (12) are installed on the two front legs (1) and the two back tubes (2), two of the third connecting rods (12) are connected by a first cross piece, and the other two of the third connecting rods (12) are connected by a second cross piece.

2. The elastic folding chair according to claim 1, characterized in that: The first cross member comprises two first connecting rods (10), the two first connecting rods (10) are cross-connected, one end of the first connecting rod (10) is connected to the second connecting rod (11), and the first connecting rod (10) is rotatably connected to the third connecting rod (12).

3. The elastic folding chair according to claim 2, characterized in that: The second cross member comprises two second connecting rods (11), the two second connecting rods (11) are cross-connected, and one end of the second connecting rod (11) is connected to the back tube (2).

4. The elastic folding chair according to claim 3, characterized in that: One end of the first connecting rod (10) is connected to one end of the second connecting rod (11).

5. The elastic folding chair according to claim 1, characterized in that: The main connecting frame (7) is a U-shaped connecting frame.

6. The elastic folding chair according to claim 1, characterized in that: The auxiliary connecting frame (8) is a U-shaped connecting frame.

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