CN217658835U

CN217658835U - Folding chair

Info

Publication number: CN217658835U
Application number: CN202220651593.8U
Authority: CN
Inventors: 冷鹭浩
Original assignee: New Tec Integration Xiamen Co Ltd
Current assignee: New Tec Integration Xiamen Co Ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-10-28
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a folding chair, including bedplate, foreleg and back leg, the back leg is scalable, the back leg include outer tube and activity flexible peg graft in the inner tube of outer tube, the top of inner tube is followed the upper end of outer tube stretch out and with foreleg upper portion directly or indirectly rotate articulated together, the inside limit structure that is equipped with of outer tube, the inner tube stretches into gradually at the in-process that folding chair opened the outer tube up to the lower extreme quilt of inner tube limit structure stops, the inner tube is in limit structure stops during the inner tube lower extreme inner tube upper end with expose between the outer tube upper end and be used for avoiding the finger quilt the inner tube upper end with the extension section that the outer tube upper end pressed from both sides the wound. Hidden limit structure can avoid the direct touching of finger to take place to press from both sides the condition emergence of hindering, simultaneously, after folding chair is opened completely, the extension section that still exists and expose outside on inner tube upper portion, and the finger can not pressed from both sides to hinder in inner tube upper end and outer tube upper end like this, operation safety.

Description

Folding chair

Technical Field

The utility model relates to a folding chair.

Background

The folding chair can be opened and folded at will, although in a variety of styles, the basic structure is substantially the same, i.e. the front and rear legs are pivotally hinged in a chevron shape, and together support the seat cushion. Wherein, in order to guarantee that the folding chair can normally open and shut, it is indispensable to give way the structure, has one to give way the structure and sets up the spout between seatpad and foreleg and/or back leg, provides the folding chair freedom of giving way that the in-process needs that opens and shuts by the spout. The other abdicating structure is that the rear legs are designed as telescopic legs, and the abdicating freedom degree required in the opening and closing process is provided through length extension. The structure of stepping down of first kind of spout mode except setting up the spout on will the seatpad, the front and back leg is in order to set up the slip support component corresponding to the spout, and the structure is more complicated.

The structure of stepping down of the flexible leg mode of the second kind can simplify the structure of seatpad and front and back leg hookup location, also makes the folding chair more light, but need increase a locating part again in addition on flexible leg to open the back in place at the folding chair and restrict flexible leg, folding chair just can realize stable support like this. The positioning components mostly adopt a blocking sleeve structure and also adopt an elastic blocking pin structure. Although the structure of the positioning component is not very complicated, the assembly is troublesome, and the position of the positioning component for blocking the telescopic leg has a gap, so that fingers are easy to be pinched, namely, if the fingers grab the upper end of the telescopic leg, when the folding chair is opened, the fingers are pinched by the positioning component, and the fingers are easy to be pinched by pressing the elastic stop pin.

SUMMERY OF THE UTILITY MODEL

The utility model provides a folding chair, which has simple structure and safer opening and closing operation. The utility model provides a technical scheme that its technical problem adopted is:

folding chair sets up the chevron shape bearing structure in the bedplate left and right sides including bedplate and symmetry, the bedplate with chevron shape bearing structure rotates the pin joint, chevron shape bearing structure includes foreleg and back leg, the back leg is scalable, the back leg include outer tube and activity flexible peg graft in the inner tube of outer tube, the top of inner tube is followed the upper end of outer tube stretch out and with foreleg upper portion directly or indirectly rotate articulated together, the inside limit structure that is equipped with of outer tube, the inner tube stretches into gradually at folding chair open-ended in-process the outer tube up to the lower extreme of inner tube is by limit structure blocks when the inner tube lower extreme the inner tube upper end with expose between the outer tube upper end and be used for avoiding the finger by the inner tube upper end with the extension section that the outer tube upper end pressed from both sides.

Inside the outer tube, set up limit structure in its middle part or the position of well lower part, hidden limit structure can avoid the direct touching of finger to take place to press from both sides the condition emergence of hindering, simultaneously, after folding chair is opened completely, inner tube upper portion still exists and exposes extension section outside, and inner tube upper end and outer tube upper end also can not press from both sides the finger like this, and operation safety satisfies children completely and prevents the technical requirement of tong. In addition, the limiting structure is used for limiting the descending maximum degree of the inner pipe, can be a step, a closed surface or a binding opening and has the advantage of simple structure.

In a preferred embodiment: the length of the extension is at least greater than the thickness of the finger or is substantially the same as the thickness of the finger.

In a preferred embodiment: and a necking for forming the limiting structure is arranged at the middle part or the middle lower part of the outer pipe. The outer pipe is directly provided with a necking to block the inner pipe from descending, no additional part is needed, and the structure is simple.

In a preferred embodiment: and rear leg connecting rods are arranged between the rear legs at the left side and the right side of the seat board, the end parts of the rear leg connecting rods are inserted into the rear legs, and the parts of the rear leg connecting rods inserted into the rear legs form the limiting structures. The part of the rear leg connecting rod inserted into the rear leg forms a limiting structure, so that additional parts are not needed, and the strength and the stability of the rear leg connecting rod are improved.

In a preferred embodiment: the part of the rear leg connecting rod inserted into the rear leg is of a flat structure. The flat open pore is arranged on the end part of the outer pipe corresponding to the flat shape, so that the strength of the outer pipe can be better ensured.

In a preferred embodiment: the front leg is provided with a pivoting sleeve, the rear side of the pivoting sleeve extends backwards to form a pivoting part, and the upper end of the inner pipe is movably hinged with the pivoting part; the lower ends of the front legs are sleeved with foot caps, and the rear sides of the foot caps are tilted backwards to form convex parts; after being folded, the convex part of the foot cap props against the rear leg, and fingers can freely pass in and out between the front leg and the rear leg. The pivoting part extends backwards from the back side of the pivoting sleeve, so that a distance is separated between the upper end of the inner pipe and the front leg, in addition, the convex part is tilted backwards from the back side of the foot cap, and the distance is separated between the lower end of the front leg and the back leg in the folding state, so that no hand clamping exists between the front leg and the back leg in the use state or the folding closed state.

In a preferred embodiment: the upper end of the inner pipe is a flat joint, and the middle part of the pin joint part is correspondingly provided with an inserting groove.

In a preferred embodiment: a pivoting shaft is arranged between the inner side of the front leg and the seat board, the middle part of the side edge of the seat board is rotatably connected with the pivoting shaft, and fingers can freely enter and exit between the front leg and the side edge of the seat board; the back leg with be equipped with the connecting piece between the side of bedplate, the side rear portion of bedplate with the connecting piece rotates and is connected, can supply the finger freely to pass in and out between the side of back leg and bedplate. The pivot axis pulls open the distance between bedplate and preceding leg, and the connecting piece pulls open the distance between bedplate and back leg, during the use, even if children's finger is put at the bedplate side, can not press from both sides the hand yet.

In a preferred embodiment: the connecting pieces are in the shape of four. The connecting piece adopts the shape, can make the front and back legs lean against together after the folding chair is folded, reduces the occupation thickness under the state of folding as far as possible.

In a preferred embodiment: the back board is connected with the upper ends of the two front legs and the cross rod, and the back board and the seat board are both plastic-absorbing boards.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 shows a perspective view of a folding chair.

Fig. 2 is a partial perspective cross-sectional view of the folding chair.

Fig. 3 is an enlarged schematic view of the position of the circle in fig. 2.

Fig. 4 is a schematic cross-sectional view of the folded folding chair of fig. 1 from a top view.

Figure 5 is an exploded view of the folding chair of figure 1.

Fig. 6 is a side view of the folding chair of fig. 1.

Fig. 7 is a side view of the folding chair of fig. 1 during folding.

Fig. 8 is a perspective view showing the folding process of the folding chair shown in fig. 1 (corresponding to fig. 7).

Fig. 9 is a side view of the folding chair of fig. 1 after folding.

Detailed Description

Referring to fig. 1 to 9, the folding chair includes a seat plate 10 and herringbone support structures symmetrically disposed at left and right sides of the seat plate, and the herringbone support structures are used for supporting the seat plate 10. The seat plate 10 is pivotally connected to the herringbone support structure, which comprises a front leg 20 and a rear leg 30, and the rear leg 30 is telescopic, i.e. variable in length. The rear leg 30 comprises an outer tube 31 and an inner tube 32 movably inserted in the outer tube in a telescopic manner, wherein the top end of the inner tube 32 extends out from the upper end of the outer tube 31 and is directly or indirectly hinged with the upper part of the front leg 20 in a rotating manner. The inner tube 32 gradually extends into the outer tube 31 until the lower end of the inner tube is blocked by the limiting structure 33 in the process of opening the folding chair, that is, the rear leg 30 is in an extended state when the folding chair is folded, and is in a contracted state when the folding chair is opened. When the inner tube 32 blocks the lower end of the inner tube 31 by the limit structure 33, that is, when the folding chair is opened, a section of extension 322 is exposed from the inner tube 32 between the upper end of the inner tube and the upper end of the outer tube 31, and the extension 322 is used to prevent fingers from being pinched by the upper ends of the inner tube and the outer tube. That is, if the folding chair is to be opened in the folded state, even if fingers are held at the position of the extension section 32, the inner tube 32 gradually extends into the outer tube 31 when the folding chair is opened, and finally the lower end of the inner tube is blocked by the limiting structure 33, and the extension section 322 of the inner tube is still exposed, although the distance between the upper end of the inner tube and the upper end of the outer tube is smaller and smaller in the opening process of the folding chair, the fingers cannot be pinched by the upper end of the inner tube and the upper end of the outer tube because of the extension section 322.

Preferably, the length of the extension 322 is at least greater than the thickness of the finger, or substantially the same as the thickness of the finger. The thickness of the finger is basically the same as that of the finger and can be slightly smaller than that of the finger, although the finger is slightly pressed by the upper ends of the inner tube and the outer tube, the muscle of the human body has elasticity, and the finger can not be pinched due to slight deformation.

Preferably, a rear leg connecting rod 34 is arranged between the rear legs 30 at the left and right sides of the seat plate, the end of the rear leg connecting rod 34 is inserted into the outer tube 31 of the rear leg 30, and the part of the rear leg connecting rod 34 inserted into the outer tube 31 of the rear leg forms the limiting structure 33. Therefore, the maximum retraction of the inner tube 32 into the outer tube 31 is the pushing of the lower end of the inner tube against the stop structure 33, and the folding chair just completes the beating action.

Preferably, the portion of the rear leg link 34 inserted into the rear leg outer tube is of a flattened configuration. It should be understood that the entire rear leg link 34 may be in the shape of a circular tube, as long as the tube diameter of the rear leg link 34 is smaller than that of the outer tube 31. It can be understood that the step surface or the bottleneck structure formed in the outer tube 31 by directly using the necking method can also be used for blocking the inner tube, or the inner cavity of the outer tube is a stepped hole or the like.

Preferably, a pivot sleeve 40 is arranged on the front leg 20, the rear side of the pivot sleeve 40 extends backwards to form a pivot part 42, and the upper end of the inner tube 32 is movably hinged with the pivot part 42; the lower end of the front leg 20 is sleeved with a foot cap 50, and the rear side of the foot cap is tilted backwards to form a convex part 52. After folding, the convex portion 52 of the foot cap supports against the outer tube of the rear leg 30, and the top end of the rear leg is separated from the front leg by the pivotal portion 42, so that the fingers can freely pass in and out between the front leg 20 and the rear leg 30.

Preferably, the upper end of the inner tube 32 is a flat joint, and the middle of the pivot portion 42 is correspondingly provided with a slot.

Preferably, a pivot shaft 22 is provided between the inner side of the front leg 20 and the seat plate 10, the middle of the side edge of the seat plate 10 is rotatably connected with the pivot shaft 22, and fingers can freely enter and exit between the front leg 20 and the side edge of the seat plate 10; a connecting piece 36 is arranged between the rear leg 30 and the side edge of the seat board 10, the rear part of the side edge of the seat board 10 is rotatably connected with the connecting piece 36, and fingers can freely enter and exit between the rear leg 30 and the side edge of the seat board 10.

Preferably, the connecting piece 36 is in a "" shape.

Preferably, a front leg connecting rod 24 is arranged between the two front legs 20, the upper ends of the two front legs are connected together by a cross rod 26, the chair further comprises a backrest plate 60, the backrest plate is connected with the upper ends of the two front legs and the cross rod, and the backrest plate and the seat plate are both plastic-suction plates.

When the chair plate 10 is folded, the front end of the chair plate 10 is lifted upwards, as shown in fig. 6-9, the chair plate 10 rotates clockwise around the pivot shaft 22, the front leg 20 and the rear leg 30 are driven to be close together, the rear leg is extended during the folding process because the pivot point of the connecting piece 36 and the chair plate 10 is continuously lowered, and finally the convex part 52 of the foot cap 50 is close to the rear leg 30. In the open state of the folding chair, the exposed length of the inner tube 32 is the least, and in the folded state, the exposed length of the inner tube 32 is the greatest, so that if the folding chair is opened from the folded state, the exposed part of the inner tube 32 is reduced until the inner tube is clamped with the limiting structure, and finally the exposed part of the inner tube forms the least extension section.

The foregoing is only a preferred embodiment of the present invention, and therefore the scope of the invention should not be limited by this, and the equivalent changes and modifications made in the claims and the description should be considered within the scope of the present invention.

Claims

1. The utility model provides a folding chair, includes bedplate and symmetry setting in the chevron shape bearing structure of the bedplate left and right sides, the bedplate with chevron shape bearing structure rotates the pin joint, chevron shape bearing structure includes foreleg and back leg, the back leg is scalable, the back leg include outer tube and activity flexible peg graft in the inner tube of outer tube, the top of inner tube is followed the upper end of outer tube stretch out and with foreleg upper portion directly or indirectly rotate articulated be in the same place its characterized in that: the folding chair is characterized in that a limiting structure is arranged inside the outer tube, the inner tube gradually extends into the outer tube in the process of opening the folding chair until the lower end of the inner tube is blocked by the limiting structure, and the extension section used for avoiding fingers from being clamped by the upper end of the inner tube and the upper end of the outer tube is exposed between the upper end of the inner tube and the upper end of the outer tube when the lower end of the inner tube is blocked by the limiting structure.

2. The folding chair of claim 1, wherein: the length of the extension is at least greater than or substantially the same as the thickness of the finger.

3. The folding chair of claim 1, wherein: and a necking for forming the limiting structure is arranged at the middle part or the middle lower part of the outer pipe.

4. The folding chair of claim 1, wherein: and rear leg connecting rods are arranged between the rear legs at the left side and the right side of the seat plate, the end parts of the rear leg connecting rods are inserted into the rear legs, and the parts of the rear leg connecting rods inserted into the rear legs form the limiting structure.

5. The folding chair of claim 4, wherein: the part of the rear leg connecting rod inserted into the rear leg is of a flat structure.

6. The folding chair as in any one of claims 1-5, wherein: the front leg is provided with a pivoting sleeve, the rear side of the pivoting sleeve extends backwards to form a pivoting part, and the upper end of the inner pipe is movably hinged with the pivoting part; the lower ends of the front legs are sleeved with foot caps, and the rear sides of the foot caps are tilted backwards to form convex parts; after being folded, the convex part of the foot cap props against the rear leg, and fingers can freely pass in and out between the front leg and the rear leg.

7. The folding chair of claim 6, wherein: the upper end of the inner pipe is a flat joint, and the middle part of the pin joint part is correspondingly provided with an inserting groove.

8. The folding chair of claim 6, wherein: a pivoting shaft is arranged between the inner side of the front leg and the seat board, the middle part of the side edge of the seat board is rotatably connected with the pivoting shaft, and fingers can freely enter and exit between the front leg and the side edge of the seat board; the back leg with be equipped with the connecting piece between the side of bedplate, the side rear portion of bedplate with the connecting piece rotates and is connected, can supply the finger freely to pass in and out between the side of back leg and bedplate.

9. The folding chair of claim 8, wherein: the connecting pieces are in the shape of four.

10. The folding chair of claim 8, wherein: the back board is connected with the upper ends of the two front legs and the cross rod, and the back board and the seat board are both plastic-absorbing boards.