Lifting-adjustable folding chair structure

Abstract

The utility model discloses a lifting-adjustable folding chair structure, which comprises two hollow vertical support rods and two hollow inclined support rods, the two hollow vertical support rods are provided with a rear X-shaped folding frame, the two hollow inclined support rods are provided with a front X-shaped folding frame, a connecting seat is fixed in the middle of each hollow vertical support rod, and the connecting seat is provided with a front X-shaped folding frame. The top of the hollow inclined supporting rod is connected to the connecting base in a foldable mode through a pin shaft. The top end of the hollow vertical supporting rod is inserted into the backrest lifting rod; supporting leg lifting rods are inserted into the bottom end of the hollow vertical supporting rod and the bottom end of the hollow inclined supporting rod; locking structures are fixed at the bottom end and the top end of the hollow vertical supporting rod and the bottom end of the hollow inclined supporting rod; locking holes are formed in the side walls of the bottom end and the top end of the hollow vertical supporting rod and the side wall of the bottom end of the hollow inclined supporting rod. The folding chair is reasonable in structural arrangement, positions are locked during lifting adjustment of the backrest lifting rod and the supporting leg lifting rod, using stability and reliability are improved, adjusting operation is facilitated, folding operation can be conducted when the folding chair is not used, and carrying and using are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of folding chairs, and particularly relates to a folding chair structure with adjustable lifting. Background Art

[0002] A chair is a common office furniture structure, which is generally composed of a chair frame, a backrest and a seat board. The structures of the chair frame and the backrest are fixed. Although it can meet the general usage requirements, it cannot be adjusted in height as needed, which will affect its scope of application to a certain extent and its practicability is limited. Content of the Utility Model

[0003] The purpose of the utility model is to provide a folding chair structure with adjustable lifting, which has reasonable structure settings and is conducive to adjustment operations.

[0004] The technical solution to achieve the purpose of the utility model is a folding chair structure with adjustable lifting, including two hollow vertical rods and two hollow inclined rods. A rear X-shaped folding frame is arranged between the middle and lower parts of the two hollow vertical rods, and a front X-shaped folding frame is arranged between the middle and lower parts of the two hollow inclined rods. A connecting seat is fixed in the middle of the hollow vertical rod, and the top of the hollow inclined rod is foldably connected to the connecting seat through a pin shaft;

[0005] The top end of the hollow vertical rod is inserted into the backrest lifting rod;

[0006] The bottom ends of the hollow vertical rod and the hollow inclined rod are both inserted with foot lifting rods;

[0007] Locking structures are fixed at the bottom and top ends of the hollow vertical rod and the bottom end of the hollow inclined rod;

[0008] Locking holes are arranged on the side walls of the bottom and top ends of the hollow vertical rod and the bottom side wall of the hollow inclined rod;

[0009] When the backrest lifting rod and the foot lifting rod are lifted, they are locked and positioned through the locking structure.

[0010] Further preferably: The locking structure includes a connecting sleeve, a button seat, a button body and a spring;

[0011] The button seat is fixed on the side wall of the connecting sleeve;

[0012] The connecting sleeve and the button seat are provided with locking holes. The middle of the button body is rotatably connected to the button seat through a shaft rod, and the spring is arranged between one end of the button body and the button seat. A locking convex column is fixed at the other end of the button body;

[0013] Under the action of the spring, the button body enables the locking convex post to pass through the locking hole and abut against the backrest lifting rod or the footrest lifting rod for positioning.

[0014] Further preferably: A plurality of round holes are equidistantly arranged on the backrest lifting rod or the footrest lifting rod, and the plurality of round holes are on the same vertical line;

[0015] The locking convex post is snapped into different round holes for positioning.

[0016] Further preferably: An armrest structure is provided in the middle of the hollow vertical support rod;

[0017] The armrest structure includes an armrest rod and a support rod;

[0018] One end of the armrest rod is rotatably connected to the connecting seat through a pin shaft, the top end of the support rod is rotatably connected to the end of the armrest rod through a pin shaft, and the bottom end of the support rod is rotatably connected to the bottom end of the hollow inclined support rod through a pin shaft.

[0019] Further preferably: A footrest seat is fixed at the bottom end of the footrest lifting rod, and the lower part of the front X-shaped folding frame is rotatably connected to the footrest seat through a pin shaft.

[0020] Further preferably: A U-shaped support groove is provided at the top of the front X-shaped folding frame;

[0021] A reinforcing rod is rotatably connected to the middle of the hollow vertical support rod through a pin shaft;

[0022] The top end of the reinforcing rod is snapped into the U-shaped support groove for limiting.

[0023] Further preferably: The hollow inclined support rod, the rear X-shaped folding frame, the front X-shaped folding frame, the backrest lifting rod, the hollow inclined support rod and the footrest lifting rod are all metal structures or plastic structures.

[0024] The utility model has positive effects: The structure of the utility model is reasonably arranged. It is provided with a backrest lifting rod and a footrest lifting rod, and a locking structure is provided, so as to lock the positions when the backrest lifting rod and the footrest lifting rod are adjusted up and down, improve the use stability and reliability, facilitate the adjustment operation, and can be folded when not in use, which is convenient for carrying and using, and has strong applicability and good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the utility model easier to be clearly understood, the following further details the utility model according to specific embodiments in conjunction with the drawings, wherein:

[0026] Figure 1 is a schematic structural diagram of the utility model;

[0027] Figure 2 Schematic structural view when one of the leg lifting rods and the locking structure of the present utility model are disassembled;

[0028] Figure 3 Schematic structural view of the specific structure of the locking structure of the present utility model.

[0029] Reference numerals: hollow vertical rod 1, hollow inclined rod 2, rear X-shaped folding frame 3, front X-shaped folding frame 4, connecting seat 5, backrest lifting rod 6, leg lifting rod 7, locking structure 8, connecting sleeve 81, button seat 82, button body 83, spring 84, locking hole 9, round hole 10, armrest structure 11, armrest rod 111, support rod 112, leg base 12, reinforcing rod 13, U-shaped support groove 14. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment

[0032] See Figures 1 to 3 As shown, a folding chair structure with adjustable lifting includes two hollow vertical rods 1 and two hollow inclined rods 2. A rear X-shaped folding frame 3 is arranged between the middle and lower parts of the two hollow vertical rods, and a front X-shaped folding frame 4 is arranged between the middle and lower parts of the two hollow inclined rods. In this embodiment, the folding operation can be realized through the above structure, which is convenient for carrying and using requirements. The centers of its rear X-shaped folding frame and front X-shaped folding frame are connected by a pin shaft, so that the folding requirement can be carried out.

[0033] Among them, a connecting seat 5 is fixed in the middle of the hollow vertical rod, and the top of the hollow inclined rod is foldably connected to the connecting seat through a pin shaft; the connecting seat is convenient for connecting the corresponding structure and can also be folded according to needs;

[0034] Meanwhile, the top end of the hollow vertical support rod is inserted into the backrest lifting rod 6; the bottom ends of the hollow vertical support rod and the hollow inclined support rod are both inserted with footrest lifting rods 7; moreover, locking structures 8 are fixed at the bottom end, top end of the hollow vertical support rod, and the bottom end of the hollow inclined support rod; also, locking holes 9 are provided on the side walls of the bottom end, top end of the hollow vertical support rod, and the bottom end side wall of the hollow inclined support rod; during use, when the backrest lifting rod and the footrest lifting rod are lifted or lowered, locking positioning is achieved through the locking structure. Through the above structure, the effectiveness and reliability of locking can be improved, ensuring the smoothness of lifting adjustment.

[0035] During actual application, the locking structure includes a connecting sleeve 81, a button seat 82, a button body 83, and a spring 84; in this embodiment, the spring is mainly used to apply a force to the button body to ensure the effectiveness of locking, and when lifting adjustment is required, only need to press the button body and compress the spring, which improves the convenience and effectiveness of lifting adjustment. In this embodiment, a buffer groove hole is provided at the connecting sleeve, and it is locked and positioned through bolts, so that the connecting sleeve can be firmly connected to the end of the hollow vertical support rod 1 or the hollow inclined support rod, ensuring the smoothness and reliability of the connection.

[0036] During actual application, during assembly, the button seat is fixed on the side wall of the connecting sleeve; locking holes are provided on the connecting sleeve and the button seat, the middle part of the button body is rotatably connected to the button seat through a shaft rod, and the spring is arranged between one end of the button body and the button seat, and a locking convex column is fixed at the other end of the button body; during use, under the action of the spring, the locking convex column passes through the locking hole and abuts against the backrest lifting rod or the footrest lifting rod for positioning.

[0037] During actual application, a number of round holes 10 are equidistantly arranged on the backrest lifting rod or the footrest lifting rod; the number of round holes is on the same vertical line; the locking convex column is snapped into different round holes for positioning. Through the above structure, during lifting adjustment, the locking convex column can be snapped into the round hole for positioning, ensuring the smoothness and reliability of adjustment.

[0038] During actual application, an armrest structure 11 is provided in the middle of the hollow vertical support rod; the armrest structure includes an armrest rod 111 and a support rod 112; during assembly, one end of the armrest rod is rotatably connected to the connecting seat through a pin shaft, the top end of the support rod is rotatably connected to the end of the armrest rod through a pin shaft, and the bottom end of the support rod is rotatably connected to the bottom end of the hollow inclined support rod through a pin shaft. Through the above structure, the effectiveness and smoothness of folding can be ensured, and it has strong practicability.

[0039] In the actual application process, a footrest base 12 is fixed to the bottom end of the footrest lifting rod, and the lower part of the front X-shaped folding frame is rotatably connected to the footrest base through a pin shaft. Moreover, a U-shaped support groove 14 is provided at the top of the front X-shaped folding frame; a reinforcing rod 13 is rotatably connected to the middle of the hollow vertical support rod through a pin shaft; the top end of the reinforcing rod is clamped into the U-shaped support groove for positioning. Through the above structure, it is beneficial to improve the use stability and effectiveness of the overall structure, prevent tilting or displacement, has strong practicability, and does not affect the normal folding requirement.

[0040] In this embodiment, the hollow inclined support rod, the rear X-shaped folding frame, the front X-shaped folding frame, the backrest lifting rod, the hollow inclined support rod, and the footrest lifting rod are all metal structures or plastic structures.

[0041] The utility model has positive effects: The structure of the utility model is reasonably arranged. It is provided with a backrest lifting rod and a footrest lifting rod, and a locking structure is provided to lock the position when the backrest lifting rod and the footrest lifting rod are adjusted in height, improving the use stability and reliability, facilitating the adjustment operation, and enabling folding operation when not in use, being convenient to carry and use, with strong applicability and good practicability.

[0042] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the specification, they can also be directly processed without doubt according to the existing technical knowledge. At the same time, the connection methods of each component adopt the mature conventional means in the existing technology, and the machines, parts, and equipment all adopt the conventional models in the existing technology, so no specific description will be made here.

[0043] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And these obvious changes or modifications derived from the essence of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A folding chair structure with adjustable lifting, comprising two hollow vertical struts and two hollow inclined struts. A rear X-shaped folding frame is arranged between the middle and lower parts of the two hollow vertical struts, and a front X-shaped folding frame is arranged between the middle and lower parts of the two hollow inclined struts. It is characterized in that: A connecting seat is fixed in the middle of the hollow vertical support rod, and the top of the hollow inclined support rod is foldably connected to the connecting seat through a pin shaft; The top end of the hollow vertical support rod is inserted into the backrest lifting rod; The bottom end of the hollow vertical support rod and the bottom end of the hollow inclined support rod are both inserted with footrest lifting rods; Locking structures are fixed at the bottom end, top end of the hollow vertical support rod and the bottom end of the hollow inclined support rod; Locking holes are provided on the side walls of the bottom end, top end of the hollow vertical support rod and the bottom end side wall of the hollow inclined support rod; When the backrest lifting rod and the footrest lifting rod are lifted or lowered, locking positioning is achieved through the locking structure.

2. The structure of a foldable chair with adjustable lifting according to claim 1, wherein: The locking structure includes a connecting sleeve, a button seat, a button body and a spring; The button seat is fixed on the side wall of the connecting sleeve; A locking hole is provided on the connecting sleeve and the button seat. The middle of the button body is rotatably connected to the button seat through a shaft rod, and the spring is arranged between one end of the button body and the button seat. A locking convex column is fixed at the other end of the button body; Under the action of the spring, the locking convex column passes through the locking hole and abuts against the backrest lifting rod or the footrest lifting rod for positioning.

3. The folding chair structure with adjustable lifting according to claim 2, characterized in that: A plurality of round holes are equidistantly arranged on the backrest lifting rod or the footrest lifting rod, and the plurality of round holes are on the same vertical line; The locking convex column is clamped into different round holes for positioning.

4. A folding chair structure with adjustable lifting according to claim 1, characterized in that: An armrest structure is arranged in the middle of the hollow vertical support rod; The armrest structure includes an armrest rod and a support rod; One end of the armrest rod is rotatably connected to the connecting seat through a pin shaft. The top end of the support rod is rotatably connected to the end of the armrest rod through a pin shaft, and the bottom end of the support rod is rotatably connected to the bottom end of the hollow inclined support rod through a pin shaft.

5. A foldable chair structure with adjustable lifting according to claim 4, characterized in that: A footrest seat is fixed at the bottom end of the footrest lifting rod, and the lower part of the front X-shaped folding frame is rotatably connected to the footrest seat through a pin shaft.

6. The foldable chair structure with adjustable lifting according to claim 4, characterized in that: A U-shaped support groove is arranged at the top of the front X-shaped folding frame; A reinforcing rod is rotatably connected to the middle of the hollow vertical support rod through a pin shaft; The top end of the reinforcing rod is clamped into the U-shaped support groove for limiting.

7. The structure of a foldable chair with adjustable lifting according to claim 1, characterized in that: The hollow inclined support rod, the rear X-shaped folding frame, the front X-shaped folding frame, the backrest lifting rod, the hollow inclined support rod and the footrest lifting rod are all metal structures or plastic structures.

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