CN220369729U - Folding chair capable of being used in stretching mode - Google Patents

Abstract

The utility model discloses a stretchable folding chair, which relates to the field of folding chairs and aims at solving the technical problems that the traditional folding chair occupies a large storage space and cannot be adjusted according to users with different heights.

Description

Folding chair capable of being used in stretching mode

Technical Field

The utility model belongs to the field of folding chairs, and particularly relates to a stretchable folding chair.

Background

The existing folding chair usually adopts a chair leg folding mode, has a certain function of easy storage, but the chair back part does not have a folding function, the occupied storage space cannot be further compressed, the folding chair only has a specific height after being unfolded, and the situation of leg space uncomfortableness can occur for people with different heights when the folding chair is used.

The prior Chinese patent with publication number of CN218869828U discloses a folding chair, which comprises a folding mechanism, wherein the folding mechanism also comprises two supporting rods hinged with two first connecting pieces respectively, a second connecting piece is fixed on the upright rods above the first connecting pieces, and the second connecting piece is connected with the supporting rods in a sliding way when the folding mechanism is unfolded.

Therefore, the folding chair has no chair back folding function, the occupied storage space is larger, the height of the folding chair is fixed, the novel folding chair cannot be developed according to the condition that the user groups with different heights can not adjust, the folding chair is matched with the stretchable chair leg structure by utilizing the folding chair back structure, the volume of the chair is convenient to further compress, the height of the chair is convenient to adjust, and the folding chair is more suitable for people with different heights.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a stretchable folding chair which aims at solving the technical problems that the traditional folding chair occupies a large storage space and cannot be adjusted according to users with different heights.

(2) Technical proposal

In order to solve the technical problems, the utility model provides a stretchable folding chair which comprises a chair seat and a chair back frame which is arranged at the rear side of the upper end of the chair seat and can be folded forwards, wherein a hinge is movably connected between the rear end of the chair seat and the chair back frame, a ring seat is arranged at the lower end of the chair seat, four groups of primary sleeves of which the inner walls are fixedly connected with cross-shaped parts are arranged at the lower end of the chair seat, a secondary sleeve is movably connected at the inner side of the primary sleeve, a tertiary sleeve is movably connected at the inner side of the secondary sleeve, and a base is arranged at the lower end of the tertiary sleeve.

When the stretchable folding chair is used, a user steps on the edge of the base by feet, then pulls up the chair seat upwards, the second sleeve is pulled out of the first sleeve, the third sleeve is pulled out of the second sleeve, the first spring is enabled to jack the first locking head into the corresponding first locking hole, the first sleeve, the second sleeve and the third sleeve are relatively fixed, then the chair back frame is folded backwards and erected through the hinge, the limiting frame is rotated to the rear side of the chair back frame and subjected to elastic pushing action of the second spring, the second locking head is enabled to jack into the second locking hole, the limiting frame is locked on the chair back frame, the user slides back cushion up and down to a proper position according to the height of the upper half of the user, then sits on the cushion by the back cushion, and the legs are placed on the extending part of the front end of the cushion.

Further, fixedly connected with link between the one-level sleeve, fixedly connected with wire head in the middle of the link, wire head threaded connection in the hole inslot of seat support lower extreme adopts the rotatory screw of wire head to connect between seat support and the ring seat to fix, conveniently dismantles.

Further, the primary sleeve outer wall downside the both sides about the secondary sleeve outer wall with a locking hole has all been seted up to tertiary sleeve outer wall upside, a locking hole inboard swing joint has a locking head, a locking head with install a spring between a locking hole inner wall, tertiary sleeve lower extreme fixedly connected with silk cover, the silk hole has been seted up to the base upper end, silk cover threaded connection in the silk hole is inboard, and the secondary sleeve slides down, makes a locking head top of self go into a locking hole on the primary sleeve and forms the locking, and tertiary sleeve slides down, makes another locking head top of self go into another locking hole on the secondary sleeve and forms the locking.

Further, the back cushion capable of sliding longitudinally is arranged on the front side of the back frame, the seat cushion is arranged at the upper end of the seat, the front end of the seat cushion extends outwards to the edge of the seat cushion, the back cushion and the seat cushion are respectively used for supporting the back leaning and the buttocks of a user, and the extending part of the front end of the seat cushion plays a flexible supporting role on the thigh position.

Further, the back cushion rear end fixedly connected with slider, the spout has been seted up to back of the chair frame front end, slider swing joint in the spout is inboard, the slider surface cladding has the rubber layer, and the back cushion passes through the slider and slides in the spout height-adjusting, and the user of convenient different heights leans on, utilizes the friction between rubber layer and the spout inner wall to prevent back cushion natural slip.

Further, the seat back is provided with rotatable spacing, spacing one end fixedly connected with loose axle, the loose axle peg graft in the seat back rear end, the spacing uses the loose axle to rotate as the axle center, when being in back of the chair frame rear side, avoids back of the chair frame to receive the dependence of user and buckle the disconnection backward.

Further, the limit frame is far away from one end of the movable shaft and is provided with a second locking hole, the inner side of the chair back frame is movably connected with a second locking head, a second spring is arranged at one end of the second locking head, after the limit frame is turned upwards, the second spring jacks the second locking head into the second locking hole, the limit frame is locked, and the back frame is prevented from being detached from the rear side of the chair back frame.

(3) Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the stretchable folding chair adopts the telescopic chair leg structure and the foldable chair back structure, so that the external volume of the traditional folding chair is convenient to further compress, the chair is more convenient to store, the folding chair adopts the sleeved chair leg structure, the folding chair can be adjusted to different heights, and users with different heights can sit more comfortably; the back cushion capable of longitudinally moving is convenient for users with different heights to lean on, and meanwhile, the cushion with the forward extending structure is better in supporting and wrapping the legs of the users.

Drawings

FIG. 1 is a schematic view of an assembled structure of an embodiment of a stretchable folding chair according to the present utility model;

FIG. 2 is a schematic view showing another assembled structure of a stretchable folding chair according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a seat structure of an embodiment of a stretchable folding chair according to the present utility model;

FIG. 4 is a schematic view of a chair back frame of an embodiment of a stretchable folding chair according to the present utility model;

fig. 5 is a schematic view showing the mounting structure of the ring seat and the base of the embodiment of the stretchable folding chair according to the present utility model.

The marks in the drawings are: 1. a seat; 2. a chair back frame; 3. a hinge; 4. a ring seat; 5. a primary sleeve; 6. a secondary sleeve; 7. a three-stage sleeve; 8. a base; 9. a connecting frame; 10. a spinneret; 11. a first locking hole; 12. a first locking head; 13. a first spring; 14. a silk sleeve; 15. a wire hole; 16. a back pad; 17. a cushion; 18. a slide block; 19. a chute; 20. a limiting frame; 21. a movable shaft; 22. a second locking hole; 23. a second locking head; 24. and a second spring.

Detailed Description

The embodiment is a folding chair for stretching use, the assembly structure of which is shown in fig. 1, the assembly structure of which is shown in fig. 2, the structure of a seat 1 is shown in fig. 3, the structure of a back frame 2 is shown in fig. 4, the installation structure of a ring seat 4 and a base 8 is shown in fig. 5, the folding chair comprises a seat 1, a seat back frame 2 which is installed at the rear side of the upper end of the seat 1 and can be folded forwards, a hinge 3 is movably connected between the rear end of the seat 1 and the seat back frame 2, the ring seat 4 is installed at the lower end of the seat 1, four groups of primary sleeves 5 of which the inner wall of the ring seat 4 is fixedly connected with a cross-shaped part are movably connected with the inner side of the primary sleeve 5, the inner side of the secondary sleeve 6 is movably connected with a tertiary sleeve 7, and the lower end of the tertiary sleeve 7 is provided with the base 8.

Aiming at the specific embodiment, the primary sleeve 5, the secondary sleeve 6 and the tertiary sleeve 7 are of cylindrical sleeve rod structures which are sleeved with each other, and the number of sleeve rods can be increased or decreased according to the needs in actual use, so that the height adjusting range is larger.

The connecting frame 9 is fixedly connected between the first-stage sleeves 5, the wire head 10 is fixedly connected between the connecting frame 9, the wire head 10 is in threaded connection with the lower end of the seat 1 in a hole groove, the upper side and the lower side of the outer wall of the first-stage sleeve 5 and the upper side of the outer wall of the second-stage sleeve 6 are respectively provided with a first locking hole 11, the inner side of the first locking hole 11 is movably connected with a first locking head 12, a first spring 13 is arranged between the first locking head 12 and the inner wall of the first locking hole 11, the lower end of the third-stage sleeve 7 is fixedly connected with a wire sleeve 14, the upper end of the base 8 is provided with a wire hole 15, the wire sleeve 14 is in threaded connection with the inner side of the wire hole 15, the seat 1 and the ring seat 4 are fixed by adopting the rotation screwing of the wire head 10, the second-stage sleeve 6 slides downwards, the first locking head 12 of the second-stage sleeve is jacked into the first locking hole 11 on the first-stage sleeve 5 to form locking, the third-stage sleeve 7 slides downwards, and the other first locking head 12 of the second-stage sleeve is jacked into the second locking hole 11 to form locking hole 11.

Simultaneously, but back of the chair frame 2 front side is provided with the back cushion 16 of longitudinal sliding, seat pad 17 is installed to seat support 1 upper end, seat pad 17 front end outwards extends to seat support 1 edge, back of the chair cushion 16 rear end fixedly connected with slider 18, spout 19 has been seted up to back of the chair frame 2 front end, slider 18 swing joint in spout 19 inboard, slider 18 surface cladding has the rubber layer, and back of the chair cushion 16 and seat pad 17 are used for using personnel's back to lean on and buttock support respectively, and the extension of seat pad 17 front end plays flexible support effect to thigh position, and back of the chair cushion 16 passes through slider 18 and slides in spout 19 and adjust the height, and the user of convenient different heights leans on, utilizes the friction between rubber layer and the spout 19 inner wall to prevent back of the chair cushion 16 natural slip.

In addition, the back side of the chair seat 1 is provided with a rotatable limit frame 20, one end of the limit frame 20 is fixedly connected with a movable shaft 21, the movable shaft 21 is inserted into the back end of the chair seat 1, one end of the limit frame 20, which is far away from the movable shaft 21, is provided with a second locking hole 22, the inner side of the chair back frame 2 is movably connected with a second locking head 23, one end of the second locking head 23 is provided with a second spring 24, the limit frame 20 rotates by taking the movable shaft 21 as an axis, when the limit frame is positioned at the back side of the chair back frame 2, the back frame 2 is prevented from being bent backwards and disconnected by the user, the limit frame 20 is turned upwards, the second spring 24 pushes the second locking head 23 into the second locking hole 22, the limit frame 20 is locked, and the back frame 2 is prevented from being separated from the back side of the chair back frame 2.

When the stretchable folding chair is used, a user steps on the edge of the base 8 by feet, then pulls up the seat 1 upwards, pulls out the second sleeve 6 from the first sleeve 5, pulls out the third sleeve 7 from the second sleeve 6, pushes the first locking head 12 into the corresponding first locking hole 11 by the first spring 13, relatively fixes the first sleeve 5, the second sleeve 6 and the third sleeve 7, then turns back the back frame 2 backwards through the hinge 3 to stand up, rotates the limit frame 20 to the rear side of the back frame 2, is under the elastic pushing action of the second spring 24, pushes the second locking head 23 into the second locking hole 22, locks the limit frame 20 on the back frame 2, and the user slides the back cushion 16 up and down to a proper position according to the height of the upper half of the user, then sits on the cushion 17 and depends on the back cushion 16, and the legs are placed on the extension part of the front end of the cushion 17.

Claims (7)

1. The folding chair capable of being stretched for use comprises a chair seat (1) and a chair back frame (2) which is arranged at the rear side of the upper end of the chair seat (1) and can be folded forwards; the novel chair is characterized in that a hinge (3) is movably connected between the rear end of the chair seat (1) and the chair back frame (2), a ring seat (4) is installed at the lower end of the chair seat (1), four groups of primary sleeves (5) of a cross-shaped part are fixedly connected with the inner wall of the ring seat (4), a secondary sleeve (6) is movably connected with the inner side of the primary sleeve (5), a tertiary sleeve (7) is movably connected with the inner side of the secondary sleeve (6), and a base (8) is installed at the lower end of the tertiary sleeve (7).

2. The stretchable folding chair according to claim 1, wherein a connecting frame (9) is fixedly connected between the primary sleeves (5), a wire head (10) is fixedly connected in the middle of the connecting frame (9), and the wire head (10) is in threaded connection with a hole groove at the lower end of the chair seat (1).

3. The stretchable folding chair according to claim 1, wherein a number of locking holes (11) are formed in the lower side of the outer wall of the primary sleeve (5), the upper side and the lower side of the outer wall of the secondary sleeve (6) and the upper side of the outer wall of the tertiary sleeve (7), a number of locking heads (12) are movably connected to the inner sides of the number of locking holes (11), a number of springs (13) are arranged between the number of locking heads (12) and the inner wall of the number of locking holes (11), a silk sleeve (14) is fixedly connected to the lower end of the tertiary sleeve (7), a silk hole (15) is formed in the upper end of the base (8), and the silk sleeve (14) is in threaded connection with the inner sides of the silk holes (15).

4. A stretchable folding chair according to claim 1, wherein a back cushion (16) capable of sliding longitudinally is provided on the front side of the chair back frame (2), a seat cushion (17) is mounted on the upper end of the chair seat (1), and the front end of the seat cushion (17) extends outwards to the edge of the chair seat (1).

5. The stretchable folding chair according to claim 4, wherein the back pad (16) is fixedly connected with a sliding block (18), the front end of the chair back frame (2) is provided with a sliding groove (19), the sliding block (18) is movably connected to the inner side of the sliding groove (19), and the surface of the sliding block (18) is coated with a rubber layer.

6. The stretchable folding chair according to claim 1, wherein a rotatable limiting frame (20) is arranged at the rear side of the chair seat (1), one end of the limiting frame (20) is fixedly connected with a movable shaft (21), and the movable shaft (21) is inserted into the rear end of the chair seat (1).

7. The stretchable folding chair according to claim 6, wherein a second locking hole (22) is formed at one end of the limiting frame (20) far away from the movable shaft (21), a second locking head (23) is movably connected to the inner side of the chair back frame (2), and a second spring (24) is mounted at one end of the second locking head (23).