Adjusting structure of folding chair

Abstract

The utility model discloses a kind of adjusting structure of folding chair, realize waist adjusting function, it includes folding chair frame, chair back, chair seat, adjusting clamp, adjusting band and fixed band;Chair back, chair seat are made of cloth and are connected at the back of folding chair frame, seat respectively;The both sides of chair back waist are each equipped with connecting wing;Adjusting clamp is arranged in its one connecting wing, and it includes connecting body, pivot, movable part and torsion spring;Connecting body both ends are equipped with perforation, and movable cavity is equipped between perforation;Arc surface is equipped on movable cavity end wall;Pivot is arranged in movable cavity;Movable part is rotatably sleeved in pivot, and two ends are respectively equipped with sawtooth, pressing plate, and sawtooth is close to arc surface;Torsion spring realizes to drive sawtooth to reset to arc surface;Adjusting band, fixed band one end portion are connected in the both sides of chair seat respectively;Adjusting band other end portion passes through connecting wing, the perforation close to arc surface and arc surface and sawtooth, then from the side of this connecting wing lead out;Fixed band other end portion is connected and fixed by being inserted into connecting wing and the perforation away from arc surface.

Description

Technical Field

[0001] This utility model belongs to the field of folding chair technology, and specifically refers to an adjustment structure for a folding chair. Background Technology

[0002] A folding chair is a flexible seating design whose structure allows the backrest and seat to fold together via hinges or similar mechanisms, thus reducing its footprint. This design allows folding chairs to be quickly unfolded for use when needed and stored away when not in use, making them ideal for environments with limited space. Therefore, folding chairs are lightweight, portable, and space-saving, and are typically made of metal, plastic, or wood. Folding chairs are commonly used in temporary settings such as camping, picnics, meetings, and banquets.

[0003] In the prior art, there is a type of folding chair consisting of a foldable chair frame formed by the pivoting and connecting of several tubular components, and fabric attached to corresponding parts. The fabric provides support functions such as a seat, backrest, or armrests in the corresponding parts. This type of folding chair is compact and lightweight, and is often used as a beach chair, such as the "Folding and Storage Beach Chair" disclosed in CN218588610U. However, this type of beach chair can only achieve backrest angle adjustment through the folding function of the chair frame, but cannot achieve lumbar position adjustment, and therefore cannot provide adjustable support for the human waist, resulting in a poor user experience. Utility Model Content

[0004] The main purpose of this utility model is to provide an adjustment structure for a folding chair, which solves the problems existing in the prior art, enables the adjustment of the waist position of the folding chair, and is easy to operate.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] An adjustable structure for a folding chair includes a folding chair frame, a backrest, a seat, an adjusting clamp, an adjusting strap, and a fixing strap. The backrest and seat are both made of fabric and are respectively connected to the back and seat of the folding chair frame. Hollow connecting wings are provided on both sides of the backrest at the waist position. The adjusting clamp is disposed within one of the connecting wings and includes a connecting body, a rotating shaft, a movable component, and a torsion spring. Through holes are provided at both ends of the connecting body, and a movable cavity is provided between the two through holes. An arc surface is provided on the end wall of the movable cavity near one of the through holes. The two ends of the rotating shaft are respectively connected to the left and right side walls of the movable cavity. The movable component is rotatably sleeved on the rotating shaft, with its end near the arc surface... The movable component is provided with several serrations, and a pressing plate is provided at the end of the movable component away from the arc surface; the pressing plate is movably fitted to the outside of the movable cavity; the torsion spring is sleeved on the rotating shaft, and its two ends respectively abut against the end wall of the movable cavity and the movable component to reset the serrations towards the arc surface; one end of the adjusting belt and the fixing belt are respectively connected to both sides of the seat; the other end of the adjusting belt passes through the connecting wing on the corresponding side, and simultaneously bypasses the through hole near the arc surface and between the arc surface and the serrations, and then leads out from the side of the connecting wing; the other end of the fixing belt passes through the connecting wing on the corresponding side, and bypasses the through hole away from the arc surface, and then connects and fixes itself to its side.

[0007] The fixing strap passes through the connecting wing on the corresponding side and the waist of the chair back in sequence, and then passes through the connecting wing on the opposite side and is fixed to the connecting body.

[0008] The surface of the connecting wing is provided with mounting holes, and a rubber cover is provided in the mounting holes. The rubber cover is provided with cross holes.

[0009] The chair back and seat are both filled with elastic material.

[0010] The end of the rotating shaft is fixed to the connecting body by riveting.

[0011] The inner side of the movable component is provided with a recessed movable groove, and the torsion spring is fitted into the movable groove.

[0012] The main body of the movable component is a fan-shaped block, the serrations are formed at one end of the fan-shaped block, and the pressing plate is integrally connected to the other end of the fan-shaped block.

[0013] Preferably, the left and right side walls of the movable cavity are provided with first shaft holes for the rotating shaft to pass through, and the left and right side walls of the sector block are provided with a second shaft hole for the rotating shaft to pass through.

[0014] The end wall of the movable cavity away from the arc surface is provided with an inclined surface for the end of the torsion spring to abut or connect.

[0015] The moving part is made of metal.

[0016] After adopting the above technical solution, the present invention has the following technical effects:

[0017] This invention allows users to adjust the total effective length of the adjusting belt and the fixing belt by tightening or loosening the adjusting belt, thereby changing the distance between the waist position of the chair back and the seat, thus achieving the waist position adjustment function of the folding chair. Simultaneously, the adjusting clamp of this invention is hidden inside the connecting wing and has the advantage of convenient operation; simply pressing the pressing plate of the movable part at the corresponding position on the outside of the connecting wing unlocks it, providing a better user experience. Specifically, this adjusting clamp improves upon the existing D-ring by using a torsion spring to drive the movable part so that its serrations tightly engage with the arc surface, thus fixing the adjusting belt wrapped around the perforation and arc surface. When the user needs to adjust the length, simply pressing the pressing plate of the movable part unlocks the serrations from limiting the adjusting belt. After adjustment, the movable part automatically resets under the elastic force of the torsion spring, continuing to lock the adjusting belt. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 2 for Figure 1 Enlarged view of point A (dashed lines indicate internal perspective).

[0020] Figure 3 The three-dimensional adjustment clamp of this utility model is a specific embodiment. Figure 1 .

[0021] Figure 4 The three-dimensional adjustment clamp of this utility model is a specific embodiment. Figure 2 .

[0022] Figure 5 This is an exploded view of the adjustment fixture according to a specific embodiment of the present invention.

[0023] Figure 6 This is a partial structural cross-sectional view of a specific embodiment of the present utility model.

[0024] Explanation of icon numbers:

[0025] 1-Folding chair frame; 2-Chair back; 21, 21'-Connecting wings; 211-Mounting hole; 3-Chair seat; 4-Adjusting clamp; 41-Connecting body; 411, 411'-Through hole; 412-Moving cavity; 413-Curved surface; 42-Rotating shaft; 43-Moving part; 431-Serpentine tooth; 432-Pressing plate; 44-Torsion spring; 5-Adjusting belt; 6-Fixing belt; 7-Rubber cover; 71-Cross hole. Detailed Implementation

[0026] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0027] refer to Figures 1 to 6 As shown, this utility model discloses an adjustment structure for a folding chair, including a folding chair frame 1, a chair back 2, a chair seat 3, an adjustment clamp 4, an adjustment belt 5, and a fixing belt 6;

[0028] The backrest 2 and seat 3 are both made of fabric and are respectively connected to the back and seat of the folding chair frame 1; hollow connecting wings 21 and 21' are provided on both sides of the waist position of the backrest 2.

[0029] The adjusting clamp 4 is disposed within one of its connecting wings 21, and includes a connecting body 41, a rotating shaft 42, a movable component 43, and a torsion spring 44; both ends of the connecting body 41 are provided with through holes 411 and 411', and a movable cavity 412 is provided between the two through holes 411 and 411'; an arc surface 413 is provided on the end wall of the movable cavity 412 near one of its through holes 411; both ends of the rotating shaft 42 are respectively connected to the left and right side walls of the movable cavity 412; the movable component 43... The movable part 43 is rotatably mounted on the rotating shaft 42. It has a number of serrations 431 at one end near the arc surface 413, and a pressing plate 432 is provided at the other end away from the arc surface 413. The pressing plate 432 is movably fitted on the outside of the movable cavity 412, that is, not inside the movable cavity 412. The torsion spring 44 is mounted on the rotating shaft 42. Its two ends abut against the end wall of the movable cavity 412 and the movable part 43, respectively, to provide elastic force so that the serrations 431 return to the direction of the arc surface 413.

[0030] One end of the adjusting strap 5 and the fixing strap 6 are respectively connected to both sides of the seat 3; the other end of the adjusting strap 5 is inserted into the connecting wing 21 on the corresponding side, and at the same time passes around the through hole 411 near the arc surface 413 and between the arc surface 413 and the sawtooth 431, and then leads out from the side of the connecting wing 21; the other end of the fixing strap 6 is inserted into the connecting wing 21' on the corresponding side and passes around the through hole 411' away from the arc surface 413, and then is connected and fixed to its own side.

[0031] Through the above solution, this utility model can change the total effective length of the adjusting belt 5 and the fixing belt 6 by tightening or loosening the adjusting belt 5, thereby changing the distance between the waist position of the backrest 2 and the seat 3, thus realizing the function of adjusting the waist position of the folding chair. At the same time, the adjusting clamp 4 of this utility model is hidden in the connecting wing 21 and has the advantage of convenient operation. It can be unlocked by simply pressing the pressing plate 432 of the movable part 43 at the corresponding position on the outside of the connecting wing 21, resulting in a better user experience. Specifically, the adjusting clamp 4 improves the existing D-ring by using a torsion spring 44 to drive the movable part 43 so that its serrations 431 are tightly fitted on the arc surface 413, thereby fixing the adjusting belt 5 wrapped around the through hole 411 and the arc surface 413. When the user needs to adjust the length, he only needs to press the pressing plate 432 of the movable part 43 to unlock the serrations 431 from limiting the adjusting belt 5. After the adjustment is completed, the movable part 43 can automatically reset under the elastic force of the torsion spring 44 and continue to lock the adjusting belt 5.

[0032] The following are specific embodiments of the present invention.

[0033] The aforementioned folding chair frame 1 refers to the support structure of various types of beach chairs currently on the market. Its structural features do not affect the realization of the technical solution of this utility model, because this utility model mainly involves setting adjustment clamps 4, adjustment straps 5 and fixing straps 6 on the fabric of the backrest 2 and seat 3 and inside them.

[0034] The aforementioned fixing strap 6 passes sequentially through the connecting wing 21' on the corresponding side and the waist of the chair back 2, and then passes through the connecting wing 21 on the opposite side and is connected and fixed to the connecting body 41. Therefore, the user only needs to press the pressing plate 42 on the surface of the connecting wing 21 on the side where the adjusting clamp 4 is located and pull or release the movable end of the adjusting strap 5. Single-sided operation is more convenient and quick, realizing rapid adjustment of the lumbar support of the chair back 2.

[0035] The surface of the connecting wing 21 is provided with a mounting hole 211, and a rubber cover 7 is provided inside the mounting hole 211. The rubber cover 7 is provided with a cross hole 71. This facilitates the insertion of the adjusting clamp 4 into the connecting wing 21.

[0036] The backrest 2 and seat 3 are filled with elastic materials such as sponge, which can improve the comfort of using the folding chair.

[0037] The end of the aforementioned rotating shaft 42 is fixed to the connecting body 41 by a riveting process to prevent the rotating shaft 42 from moving axially.

[0038] The inner side of the aforementioned movable part 43 is provided with a recessed movable groove 33, and the torsion spring 44 is fitted into the movable groove 33.

[0039] The main body of the aforementioned movable part 43 is a fan-shaped block 34, with serrations 431 formed at one end of the fan-shaped block 34, and a pressing plate 432 integrally connected to the other end of the fan-shaped block 34.

[0040] Furthermore, the left and right side walls of the aforementioned movable cavity 412 are each provided with a first shaft hole 14 for the rotating shaft 42 to pass through, and the left and right side walls of the fan-shaped block 34 are provided with a second shaft hole 35 for the rotating shaft 42 to pass through.

[0041] The end wall of the aforementioned movable cavity 412 away from the arc surface 413 is provided with an inclined surface 15 for the end of the torsion spring 44 to abut or connect.

[0042] The aforementioned movable part 43 is made of metal material, which can ensure the strength and service life of the movable part 43 and its saw teeth 431.

[0043] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An adjustment structure for a folding chair, characterized in that: Includes folding chair frame, chair back, chair seat, adjustment clamps, adjustment straps, and fixing straps; The chair back and seat are both made of fabric and are respectively connected to the back and seat of the folding chair frame; hollow connecting wings are provided on both sides of the waist position of the chair back. The adjusting clamp is disposed within one of its connecting wings and includes a connecting body, a rotating shaft, a movable component, and a torsion spring. Both ends of the connecting body have through holes, and a movable cavity is formed between the two through holes. An arc surface is formed on the end wall of the movable cavity near one of its through holes. The two ends of the rotating shaft are respectively connected to the left and right side walls of the movable cavity. The movable component is rotatably sleeved on the rotating shaft, with several serrations at its end near the arc surface, and a pressing plate at its end away from the arc surface. The pressing plate is movably fitted onto the outer edge of the movable cavity. The torsion spring is sleeved on the rotating shaft, with its two ends abutting against the end wall of the movable cavity and the movable component to reset the serrations towards the arc surface. One end of the adjustment strap and the fixing strap are respectively connected to both sides of the chair seat; the other end of the adjustment strap passes through the connecting wing on the corresponding side, and simultaneously bypasses the perforation near the arc surface and between the arc surface and the serration, and then leads out from the side of the connecting wing; the other end of the fixing strap passes through the connecting wing on the corresponding side, and bypasses the perforation away from the arc surface, and then connects and fixes itself to its own side.

2. The adjustment structure of the folding chair as described in claim 1, characterized in that: The fixing strap passes through the connecting wing on the corresponding side and the waist of the chair back in sequence, and then passes through the connecting wing on the opposite side and is fixed to the connecting body.

3. The adjustment structure of the folding chair as described in claim 1, characterized in that: The surface of the connecting wing is provided with mounting holes, and a rubber cover is provided in the mounting holes. The rubber cover is provided with cross holes.

4. The adjustment structure of the folding chair as described in claim 1, characterized in that: The chair back and seat are both filled with elastic material.

5. The adjustment structure of the folding chair as described in claim 1, characterized in that: The end of the rotating shaft is fixed to the connecting body by riveting.

6. The adjustment structure of the folding chair as described in claim 1, characterized in that: The inner side of the movable component is provided with a recessed movable groove, and the torsion spring is fitted into the movable groove.

7. The adjustment structure of the folding chair as described in claim 1, characterized in that: The main body of the movable component is a fan-shaped block, the serrations are formed at one end of the fan-shaped block, and the pressing plate is integrally connected to the other end of the fan-shaped block.

8. The adjustment structure of the folding chair as described in claim 7, characterized in that: The movable cavity has a first shaft hole on each of its left and right side walls for the rotating shaft to pass through, and a second shaft hole is provided between the left and right side walls of the sector block for the rotating shaft to pass through.

9. The adjustment structure of the folding chair as described in claim 1, characterized in that: The end wall of the movable cavity away from the arc surface is provided with an inclined surface for the end of the torsion spring to abut or connect.

10. The adjustment structure of the folding chair as described in claim 1, characterized in that: The moving part is made of metal.

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