CN214386827U

CN214386827U - Folding chair

Info

Publication number: CN214386827U
Application number: CN202120328274.9U
Authority: CN
Inventors: 贾情深
Original assignee: Yongkang Qingmu Industry And Trade Co ltd
Current assignee: Yongkang Qingmu Industry And Trade Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-10-15
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a folding chair, including folding chair frame, left and right chair frame that folding chair frame set up including bilateral symmetry, the articulated first folding mechanism that is provided with between left and right chair frame, first folding mechanism includes: two upper pull rods respectively hinged on the left chair frame and the right chair frame, and two lower pull rods respectively hinged on the left chair frame and the right chair frame; the other ends of the two upper pull rods are hinged to a connecting locking piece, and the other ends of the two lower pull rods are hinged to a connecting piece; an intermediate pull rod is arranged between the connecting locking piece and the connecting piece; the connecting and locking piece is provided with a locking component for fixing the middle pull rod on the connecting and locking piece; when the locking assembly is unlocked, the first folding mechanism can be retracted inwards, so that the distance between the left chair frame and the right chair frame is reduced.

Description

Folding chair

Technical Field

The utility model belongs to the technical field of the chair technique and specifically relates to a folding chair is related to.

Background

The folding chair has the advantages of light structure, capability of being folded, convenience for carrying and storage and enjoying of people. Although the existing folding chairs are various, the folding chairs mostly adopt a front-back direction folding structure, and cannot be folded in the left-right direction to further reduce the space.

In order to solve the problem of folding of the folding chair in the left and right directions, the Chinese patent CN104856487B discloses a foldable chair frame, a folding structure formed by a parallel four-bar parallel mechanism is arranged between a left back bar and a right back bar of the chair frame, and the folding or unfolding of the chair frame in the left and right directions is realized by up-and-down movement of a middle linkage bar of the parallel four-bar parallel mechanism when the foldable chair is used. This chair frame is because all kinematic pairs of parallelogram linkage are the revolute pair that is formed by hinge structure, so there is the uncertain drawback of motion, and the middle gangbar removes slightly and will lead to the folding or the expansion of chair frame in the left and right sides orientation, and this kind of uncertain factor leads to the stability of chair frame when expanding the use relatively poor, easily because of the person's of taking hard or mistake touching and arouse the phenomenon of collapsing to there is the potential safety hazard.

Disclosure of Invention

The utility model provides a folding chair, reasonable in design, the structure is firm, can realize quick folding, can guarantee the safety in utilization again.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a folding chair, includes folding chair frame, left and right chair frame that folding chair frame includes bilateral symmetry and sets up, it is provided with first folding mechanism to articulate between left and right chair frame, first folding mechanism includes: two upper pull rods respectively hinged on the left chair frame and the right chair frame, and two lower pull rods respectively hinged on the left chair frame and the right chair frame; the other ends of the two upper pull rods are hinged to a connecting locking piece, and the other ends of the two lower pull rods are hinged to a connecting piece; an intermediate pull rod is arranged between the connecting locking piece and the connecting piece; the connecting and locking piece is provided with a locking component for fixing the middle pull rod on the connecting and locking piece; when the locking assembly is unlocked, the first folding mechanism can be retracted inwards, so that the distance between the left chair frame and the right chair frame is reduced.

In the above technical scheme, preferably, when the first folding mechanism is folded, the middle pull rod can be pulled upwards to drive the included angle of the lower pull rod to be continuously reduced, and the connecting locking piece can move on the middle pull rod towards the direction of the connecting piece. After being folded, the included angle of the two upper pull rods is nearly zero, and the included angle of the lower pull rod is also nearly zero. In the whole process, the upper pull rod and the lower pull rod are changed into an X state from a basically parallel state and finally into a basically linear state.

In the above technical solution, preferably, the intermediate pull rod is provided in a mutually hinged sectional manner, so that the intermediate pull rod is foldable. After the upper pull rod and the lower pull rod are folded, the middle pull rod can be turned outwards. In order to facilitate the fixation after folding, a clamping groove is also arranged on the top end of the middle pull rod, and the middle pull rod at the upper section after folding can be buckled on the middle pull rod at the lower end through the clamping groove, so that locking is formed.

Among the above-mentioned technical scheme, it is preferred, the locking Assembly includes button, locking plate one end sets up in the button, the other end is arranged in the spacing inslot of middle pull rod, button and locking plate rotate the connection jointly and are in connect the locking piece on, make through pressing the button the locking plate leaves the spacing groove.

In the above technical solution, preferably, a spring for driving the button to return is further disposed in the connecting and locking member.

Among the above-mentioned technical scheme, preferably, still articulate between left and right chair frame and be provided with the folding mechanism of second, the folding mechanism of second sets up the latter half of folding chair frame, head rod and the second connecting rod that the folding mechanism of second includes, the middle part of head rod and second connecting rod articulates into X form, and its tip articulates respectively on left and right chair frame.

Among the above-mentioned technical scheme, it is preferred, left and right chair frame still includes preceding stabilizer blade, back stabilizer blade, seatpad bracing piece, back bracing piece and handrail, the upper end of preceding stabilizer blade pass through the second connecting piece with the upper end of back stabilizer blade is rotated and is connected, the handrail with the upper end of back stabilizer blade is rotated and is connected, the cover is equipped with the slip cap on the back stabilizer blade, the middle part of seatpad bracing piece is rotated and is connected in the front on the stabilizer blade, the rear end is rotated and is connected on the slip cap, the lower extreme of back bracing piece with the rear end of seatpad bracing piece is rotated and is connected. When the foldable seat cushion is folded, the front support legs and the rear support legs can be folded oppositely, the armrests can be folded on the rear support legs, and the seat cushion support rods and the backrest support rods can be folded oppositely.

The utility model has the advantages that: 1. the folding is convenient, and the integral folding can be completed through simple operation. 2. The volume after folding is small, can realize the folding of fore-and-aft direction, also can realize the folding of left and right sides direction to further reduce the space. 3. Be provided with and connect the locking piece and cooperate with the locking subassembly, will unable completion folding during the locking, guarantee safety in utilization. 4. The intermediate pull rod is arranged in a segmented mode, and finally, the intermediate pull rod can also be folded, so that the overall volume is further reduced.

Drawings

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

Fig. 1 is a schematic view of the chair frame structure of the present invention.

Fig. 2 is a schematic view of a chair frame with another angle according to the present invention.

Fig. 3 is a schematic diagram of the back structure of the present invention.

Fig. 4 is a schematic side view of the present invention.

Fig. 5 is a schematic elevation structure of the present invention.

Fig. 6 is a schematic view of the state of the present invention when folded.

Fig. 7 is a schematic view of the state of the first folding mechanism of the present invention after folding.

In the drawing, 1, a folding chair frame, 2, a chair seat, 3, a left chair frame, 4, a right chair frame, 5, a first folding mechanism, 51, an upper pull rod, 52, a lower pull rod, 53, a connecting locking piece, 54, a connecting piece, 55, a middle pull rod, 551, a limiting groove, 552, a clamping groove, 6, a locking assembly, 61, a button, 62, a locking piece, 63, a spring, 7, a second folding mechanism, 71, a first connecting rod, 72, a second connecting rod, 8, a front supporting leg, 9, a rear supporting leg, 10, a seat cushion supporting rod, 11, a backrest supporting rod, 12, an armrest, 13, a second connecting piece, 14, a sliding sleeve, 15, a first limiting backer and 16, a second limiting backer are arranged.

Detailed Description

Referring to fig. 1-6, a folding chair comprises a folding chair frame 1 and a chair seat 2, wherein the folding chair frame 1 comprises a left chair frame 3 and a right chair frame 4 which are arranged in bilateral symmetry, a first folding mechanism 5 is hinged between the left chair frame 3 and the right chair frame 4, and the first folding mechanism 5 comprises: two upper pull rods 51 respectively hinged on the left and

right chair frames

3 and 4, and two lower pull rods 52 respectively hinged on the left and

right chair frames

3 and 4; the other ends of the two upper pull rods 51 are hinged on a connecting locking piece 53, and the other ends of the two lower pull rods 52 are hinged on a connecting piece 54; an intermediate pull rod 55 is arranged between the connecting locking piece 53 and the connecting piece; the connecting and locking piece 53 is provided with a locking component 6 for fixing the intermediate pull rod 55 on the connecting and locking piece 53; when the locking assembly 6 is unlocked, the first folding mechanism 5 can be retracted inwardly to allow the distance between the left and

right frames

3 and 4 to be reduced. When the first folding mechanism 5 is folded, the middle pull rod 55 can be pulled upward to drive the included angle of the lower pull rod 52 to be continuously reduced, and the connecting and locking member 53 can move on the middle pull rod 55 toward the connecting member 54. After folding, the included angle of the two upper pull rods 51 is nearly zero, and the included angle of the lower pull rod 52 is also nearly zero. The upper and

lower rods

51 and 52 are changed from a substantially parallel state to an X state and finally to a substantially linear state.

In order to further reduce the folded space, the intermediate link 55 is provided in a sectional type hinged to each other, whereby the intermediate link 55 is foldable. After the upper and

lower rods

51 and 52 are folded, the middle rod 55 can be folded outward. In order to facilitate the fixation after folding, a locking groove 552 is further provided on the top end of the middle pull rod 55, and the folded middle pull rod at the upper section can be buckled on the middle pull rod at the lower end through the locking groove 552, thereby forming a lock.

The locking assembly 6 specifically comprises a button 61 and a locking piece 62, wherein one end of the locking piece 62 is arranged in the button 61, the other end of the locking piece 62 is arranged in a limiting groove 551 of the middle pull rod 55, the button 61 and the locking piece 62 are jointly and rotatably connected to the connecting and locking piece 53, and the locking piece 62 is separated from the limiting groove 551 by pressing the button 61.

In order to facilitate the automatic return of the button 61 when it is not under load, the connecting lock 53 is also provided therein. A spring 63, the spring 63 being urged outwardly against the button 61.

Still articulate between left and right chair frame 4 and be provided with second folding mechanism 7, second folding mechanism 7 sets up the latter half of folding chair frame 1, head rod 71 and the second connecting rod 72 that second folding mechanism 7 includes, the middle part of head rod 71 and second connecting rod 72 articulates into X form, and its tip articulates respectively on left and right chair frame 4.

Further, left and right chair frame 4 still includes preceding stabilizer blade 8, back stabilizer blade 9, seatpad bracing piece 10, back bracing piece 11 and handrail 12, the upper end of preceding stabilizer blade 8 pass through second connecting piece 13 with the upper end of back stabilizer blade 9 is rotated and is connected, handrail 12 with the upper end of back stabilizer blade 9 is rotated and is connected, the cover is equipped with sliding sleeve 14 on the back stabilizer blade 9, the middle part of seatpad bracing piece 10 is rotated and is connected in the front on stabilizer blade 8, the rear end is rotated and is connected on sliding sleeve 14, the lower extreme of back bracing piece 11 with the rear end of seatpad bracing piece 10 is rotated and is connected. When the folding is realized, the front support leg 8 and the rear support leg 9 can be folded oppositely, the handrail 12 can be folded on the rear support leg 9, and the seat cushion support bar 10 and the backrest support bar can be folded oppositely.

In order to make the volume after folding and storage smaller and the effect better, a groove consistent with the outer contour of the rear support leg 9 is arranged on the lower end face of the armrest 12, and the rear support leg 9 can be hidden in the armrest 12 after being folded, so that the structure is more compact.

In order to position the sliding sleeve 14 when the folding chair is unfolded for use, a blocking sleeve is fixedly arranged near the rear supporting leg 9 close to the second connecting piece 13 through a pin shaft, and the blocking sleeve can limit the sliding sleeve 14 to continuously slide upwards.

In order to ensure that the upper pull rod 51 can only rotate downwards, a first limit backer 15 is arranged on a rotating connecting block of the upper pull rod 51, which is connected with the backrest support rod 11; in order to ensure that the lower pull rod can only rotate upwards, a second limit backer 16 is arranged on a rotating connecting block of the lower pull rod 52 and the backrest support rod 11.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and the present invention is not departed from the technical solution of the present invention, and the made simple modification, equivalent change or modification all fall into the protection scope of the present invention.

Claims

1. A folding chair comprises a folding chair frame, wherein the folding chair frame comprises a left chair frame and a right chair frame;

a first folding mechanism is hinged between the left chair frame and the right chair frame,

characterized in that, first folding mechanism includes: two upper pull rods respectively hinged on the left chair frame and the right chair frame, and two lower pull rods respectively hinged on the left chair frame and the right chair frame;

the other ends of the two upper pull rods are hinged to a connecting locking piece, and the other ends of the two lower pull rods are hinged to a connecting piece;

an intermediate pull rod is arranged between the connecting locking piece and the connecting piece;

the connecting and locking piece is provided with a locking component for fixing the middle pull rod on the connecting and locking piece;

when the locking assembly is unlocked, the first folding mechanism can be retracted inwards, so that the distance between the left chair frame and the right chair frame is reduced.

2. The folding chair as claimed in claim 1, wherein when the first folding mechanism is folded, the intermediate pull rod can be pulled upward to drive the included angle of the lower pull rod to be continuously reduced, and the connecting and locking member can move on the intermediate pull rod in the direction of the connecting member.

3. The folding chair as claimed in claim 1 or 2, characterized in that the intermediate linkage is provided in sections hinged to each other, whereby the intermediate linkage is foldable.

4. The folding chair as claimed in claim 1, wherein the locking assembly comprises a button and a locking piece, one end of the locking piece is arranged in the button, the other end of the locking piece is arranged in a limiting groove of the middle pull rod, the button and the locking piece are jointly and rotatably connected to the connecting and locking piece, and the locking piece is separated from the limiting groove by pressing the button.

5. The folding chair as claimed in claim 4, wherein a spring is further provided in said connecting lock for urging said push button to return.

6. The folding chair as claimed in claim 1, wherein a second folding mechanism is further hinged between the left and right frames, the second folding mechanism is disposed at a lower half portion of the folding chair frame, the second folding mechanism comprises a first connecting rod and a second connecting rod, the middle portions of the first connecting rod and the second connecting rod are hinged in an X shape, and the end portions of the first connecting rod and the second connecting rod are hinged on the left and right frames respectively.

7. The folding chair according to claim 1, wherein the left and right chair frames further comprise a front leg, a rear leg, a seat cushion support rod, a backrest support rod and armrests, the upper end of the front leg is rotatably connected with the upper end of the rear leg through a second connecting piece, the armrests are rotatably connected with the upper end of the rear leg, a sliding sleeve is sleeved on the rear leg, the middle part of the seat cushion support rod is rotatably connected with the front leg, the rear end of the seat cushion support rod is rotatably connected with the sliding sleeve, and the lower end of the backrest support rod is rotatably connected with the rear end of the seat cushion support rod.