A three-fold storage chair

Abstract

This utility model discloses a three-fold storage chair, aiming to solve the shortcomings of common folding chairs that fold left and right or front and back, resulting in a large space occupation when folded. The utility model includes a seat frame and two support frames located on the left and right sides of the seat frame. Each support frame includes a front leg and a rear leg hinged together. The rear of the front leg is hinged to a backrest, and the front of the rear leg is rotatably connected to the seat frame. A limiting member is provided at the rear of the seat frame to limit the movement of the front leg and the backrest. The three-fold storage chair can be folded into three sections for storage, reducing the space occupied by the chair and making it easy to carry and store.

Description

Technical Field

[0001] This utility model relates to the field of folding chair technology, and more specifically, to a three-fold storage chair. Background Technology

[0002] Folding chairs are common items in daily life. When not in use, they can be folded away for storage, taking up little space. When needed, they can be unfolded, making them very convenient. Currently, common folding chairs are those that fold side-to-side or front-to-back. These types of folding chairs do not change in height when folded, and still occupy a considerable amount of space. Chinese patent application number 2011104021569 discloses a folding chair that can be folded back and forth for storage, but its height remains unchanged when folded, resulting in a large space occupation. Utility Model Content

[0003] To overcome the above shortcomings, this utility model provides a three-fold storage chair that can be folded into three sections and occupies little space after being folded.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a three-fold storage chair, including a seat frame and two support frames arranged on the left and right sides of the seat frame. The support frame includes a front leg and a rear leg that are hinged together. The rear part of the front leg is hinged to a backrest, and the front part of the rear leg is rotatably connected to the seat frame. A limiting member is provided at the rear of the seat frame to limit the front leg and the backrest.

[0005] The support frames on both sides of the seat frame provide support for the entire folding chair. The front and rear legs are hinged together to form the support frame, creating a one-fold structure. The front part of the rear leg is rotatably connected to the seat frame, creating a two-fold structure. The rear part of the front leg is hinged to the backrest, creating a three-fold structure. When folding the chair for storage, the front and rear legs fold forward and backward, the front part of the rear leg folds vertically with the seat frame, and the rear part of the front leg folds vertically with the backrest. This three-fold storage reduces the space occupied by the folding chair, making it easy to carry and store.

[0006] Preferably, a support rod is connected between the upper parts of the two front leg rods, and the support rod supports and positions the chair seat frame.

[0007] When the folding chair is unfolded and in use, the rear of the seat frame is supported on the support rod, making it stable and reliable.

[0008] Preferably, a connector is provided between the backrest and the front leg, the connector comprising a front connector and a rear connector hinged together.

[0009] The backrest and front leg are hinged together by a connector, which makes assembly convenient and the connection reliable.

[0010] Preferably, a limiting seat is provided on the rear connecting body, and a slot is provided on the limiting seat, with the limiting component engaging and connected to the slot.

[0011] When the folding chair is fully unfolded, the slot on the limiting seat engages with the limiting component to achieve positioning of the entire folding chair and ensure its stable support.

[0012] Preferably, the upper end of the rear connector is inserted into the lower end of the backrest rod, and the lower end of the front connector is inserted into the upper end of the front foot rod.

[0013] The connectors are attached to the backrest and front leg posts using a plug-in method, making assembly convenient.

[0014] Preferably, the front connector and the rear connector are provided with connecting ears, which are hinged together by a hinge shaft. The front connector and the rear connector are joined together by abutting surfaces, one end of which has an L-shaped structure and the other end of which has an arc-shaped structure.

[0015] The front and rear connectors are hinged together by connecting lugs and hinge shafts, and the front and rear connectors are joined together by mating surfaces to ensure the stability of the connection.

[0016] Preferably, the chair frame includes two longitudinal bars, with a front crossbar and a rear crossbar connecting the two longitudinal bars.

[0017] The front and rear crossbars are connected between the two longitudinal bars to form the chair frame, which is structurally stable.

[0018] Preferably, the front part of the longitudinal bar is bent downward to form a bent section, and the front crossbar is bent downward to form an arc-shaped structure.

[0019] The bend at the front of the longitudinal bar and the downward bend of the front crossbar are arc-shaped, making it more comfortable for users to sit on the seat.

[0020] Preferably, a hinged seat is provided on the chair frame, and the rear leg is hinged to the hinged seat.

[0021] The chair frame is hinged to the rear leg rod via a hinged joint, making the connection convenient and reliable.

[0022] Preferably, reinforcing crossbars are connected between the two front leg bars and between the two rear leg bars.

[0023] Strengthening the crossbars can improve the overall structural strength of the folding chair.

[0024] Compared with the prior art, the beneficial effects of this utility model are: (1) The three-fold storage chair can be folded into three folds, which reduces the space occupied by the folding chair and makes it easy to carry and store; (2) After the folding chair is fully unfolded, the slot on the limiting seat is engaged with the limiting piece to achieve positioning of the entire folding chair and ensure the stable support of the folding chair; (3) The backrest and the front leg are hinged through the connecting piece, which makes assembly convenient and the connection reliable; (4) The bending part at the front of the longitudinal bar and the downward bend of the front cross bar are arc-shaped, making it more comfortable for the user to sit on the seat. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a structural diagram of the present invention in its unfolded state.

[0027] Figure 3 This is a structural diagram of the utility model in its folded state.

[0028] Figure 4 This is an exploded view of the connector of this utility model.

[0029] Figure 5 This is a side view of Embodiment 2 of this utility model.

[0030] In the diagram: 1. Seat frame, 2. Support frame, 3. Front leg, 4. Rear leg, 5. Backrest bar, 6. Backrest crossbar, 7. Connecting groove, 8. End cap, 9. Reinforcing crossbar, 10. Anti-slip head, 11. Hinge seat, 12. Limiting component, 13. Support rod, 14. Longitudinal rod, 15. Front crossbar, 16. Rear crossbar, 17. Bend, 18. Mounting groove, 19. Seat surface, 20. Backrest. 21. Connector; 22. Front connector; 23. Rear connector; 24. Limiting seat; 25. Slot; 26. Connecting ear; 27. Clamping groove; 28. Hinge shaft; 29. ​​Positioning protrusion; 30. Positioning groove; 31. Lower insertion joint; 32. Clamping rib; 33. Lower insertion post; 34. Reinforcing tube; 35. Upper insertion joint; 36. Upper insertion post; 37. Inner tube; 38. Adjusting screw. Detailed Implementation

[0031] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0032] Example 1: A three-fold storage chair (see Figure 1 , Figure 2 , Figure 3 , Figure 4The chair includes a seat frame 1 and two support frames 2 located on the left and right sides of the seat frame 1, which support the entire folding chair. A seat surface 19 is installed on the seat frame 1 for the user to sit on. The support frame 2 includes a front leg 3 and a rear leg 4 that are hinged together, forming an X-shaped structure. A backrest 5 is hinged to the rear of the front leg 3. Two backrest crossbars 6 connect the two backrest crossbars 5, one connected to the upper part of the backrest crossbar 5 and the other to the lower part. The backrest crossbars 6 protrude rearward in an arc shape. A backrest back 20 connects the two backrest crossbars 5 for the user to lean against. A connecting groove 7 is provided on the front surface of the backrest crossbar 5, extending along the length of the backrest crossbar 5. A positioning protrusion is provided at the edge of the opening of the connecting groove 7, making the opening width of the connecting groove 7 smaller than the width of other locations. The left and right edges of the backrest back 20 are respectively installed in the two connecting grooves 7, ensuring convenient and reliable installation. The upper end of the backrest rod 5 is connected to the end cap 8. The backrest rod 5 has a tubular structure, and the front surface of the backrest rod 5 is recessed to form a connecting groove 7.

[0033] A reinforcing crossbar 9 connects the two front leg posts 3 and the two rear leg posts 4. The reinforcing crossbar 9 between the two front leg posts 3 is located near the lower part of the front leg post 3, and the reinforcing crossbar 9 between the two rear leg posts 4 is located near the lower part of the rear leg post 4. The reinforcing crossbar 9 improves the structural strength of the entire folding chair. Anti-slip heads 10 are connected to the lower ends of both the front leg posts 3 and the rear leg posts 4, and anti-slip textures are provided on the lower surface of the anti-slip heads 10.

[0034] The front part of the rear leg 4 is rotatably connected to the seat frame 1. A hinge seat 11 is installed on the seat frame 1 and welded to it. The rear leg 4 is hinged to the hinge seat 11. A limiting member 12 is installed at the rear of the seat frame 1, which limits the movement of the front support legs and the backrest 5. A support rod 13 connects the upper parts of the two front leg 3s, providing support and positioning for the seat frame 1. When the folding chair is unfolded, the rear of the seat frame 1 is supported by the support rod 13, ensuring stability and reliability.

[0035] The chair frame 1 includes two longitudinal bars 14, with a front crossbar 15 and a rear crossbar 16 connecting them. The connection of the front and rear crossbars 15 between the two longitudinal bars 14 forms the chair frame 1, providing structural stability. The front of the longitudinal bar 14 bends downward to form a bent section 17, and the front crossbar 15 bends downward in an arc shape. The bent section 17 at the front of the longitudinal bar 14 and the arc shape of the front crossbar 15 enhance user comfort when sitting on the chair. The rear crossbar 16 passes through both ends of the two longitudinal bars 14, and its ends extend outward to form limiting members 12. A mounting groove 18 is provided on the upper surface of the longitudinal bar 14, extending along the length of the longitudinal bar 14. A limiting flange is provided at the edge of the opening of the mounting groove 18, making the opening width of the mounting groove 18 smaller than the width at other locations. The left and right edges of the seat surface 19 are respectively installed in the two mounting grooves 18, ensuring convenient and reliable installation. End caps 8 are connected to both ends of the longitudinal bars 14. The longitudinal rod 14 has a tubular structure, and the upper surface of the longitudinal rod 14 is recessed to form an installation groove 18.

[0036] A connector 21 connects the backrest and front leg 3. The connector 21 includes a front connector 22 and a rear connector 23 hinged together. The backrest and front leg 3 are hinged together via the connector 21, facilitating assembly and ensuring reliable connection. The upper end of the rear connector 23 is inserted into the lower end of the backrest 5, and the lower end of the front connector 22 is inserted into the upper end of the front leg 3. A limiting seat 24 is provided on the rear connector 23, and a slot 25 with a semi-circular structure is provided on the limiting seat 24. The limiting member 12 is engaged with the slot 25. When the folding chair is fully unfolded, the slot 25 on the limiting seat 24 engages with the limiting member 12 for positioning, thereby limiting the entire folding chair and ensuring stable support.

[0037] Connecting ears 26 are provided on the front connecting body 22 and the rear connecting body 23. A pair of connecting ears 26 are located at the front of the front connecting body 22, forming a clamping groove 27 between them. A single connecting ear 26 is located at the front of the rear connecting body 23, and the connecting ear 26 on the rear connecting body 23 is clamped within the clamping groove 27. The connecting ears 26 are hinged together by a hinge shaft 28. The front connecting body 22 and the rear connecting body 23 are joined together by abutment surfaces. One end of the abutment surface has an L-shaped structure, and the other end has an arc-shaped structure. The hinged connection between the front connecting body 22 and the rear connecting body 23 via the connecting ears 26 and the hinge shaft 28, and the joint between the abutment surfaces, ensures a stable connection.

[0038] The front connecting body 22 is provided with a positioning protrusion 29 corresponding to the mating surface, and the rear connecting body 23 is provided with a positioning groove 30 corresponding to the mating surface. After the front connecting body 22 and the rear connecting body 23 are unfolded into place, the positioning protrusion 29 is inserted into the positioning groove 30 to improve the stability of the connection between the front connecting body 22 and the rear connecting body 23. The lower end of the front connecting body 22 is provided with a lower insertion joint 31. The lower insertion joint 31 is provided with clamping ribs 32 on both the left and right sides. The lower insertion post 33 is provided on the front side of the lower insertion joint 31. The front leg 3 has a tubular structure. The inner wall of the front leg 3 is provided with a reinforcing tube 34. The lower insertion joint 31 is inserted into the upper end of the front leg 3. The lower insertion post 33 and the reinforcing tube 34 are inserted. The clamping ribs 32 abut against the inner wall of the front leg 3 for positioning.

[0039] The upper end of the rear connector 23 is provided with an upper plug 35. The upper plug 35 is provided with clamping ribs 32 on both the left and right sides. The upper plug 35 is provided with an upper plug post 36 on the front side. The inner tube 37 is provided on the lower inner wall of the backrest 5. The upper plug 35 is inserted into the lower end of the backrest 5. The upper plug post 36 and the inner tube 37 are inserted into each other. The clamping ribs 32 are abutted against and positioned against the inner wall of the backrest 5.

[0040] The support frames 2 on both sides of the seat frame 1 provide support for the entire folding chair. The front leg 3 and rear leg 4 are hinged together to form the support frame 2, creating a one-fold structure. The front part of the rear leg 4 is rotatably connected to the seat frame 1, creating a two-fold structure. The rear part of the front leg 3 is hinged to the backrest 5, creating a three-fold structure. When the folding chair is folded for storage, the front leg 3 and rear leg 4 fold forward and backward, the front part of the rear leg 4 folds vertically with the seat frame 1, and the rear part of the front leg 3 folds vertically with the backrest 5. This three-fold storage reduces the space occupied by the folding chair, making it easy to carry and store.

[0041] Example 2: A three-fold storage chair (see Figure 5 The chair includes a seat frame 1 and two support frames 2 located on the left and right sides of the seat frame 1, which support the entire folding chair. A seat surface 19 is installed on the seat frame 1 for the user to sit on. The support frame 2 includes a front leg 3 and a rear leg 4 that are hinged together, forming an X-shaped structure. A backrest 5 is hinged to the rear of the front leg 3. Two backrest crossbars 6 connect the two backrest crossbars 5, one connected to the upper part of the backrest crossbar 5 and the other to the lower part. The backrest crossbars 6 protrude rearward in an arc shape. A backrest back 20 connects the two backrest crossbars 5 for the user to lean against. A connecting groove 7 is provided on the front surface of the backrest crossbar 5, extending along the length of the backrest crossbar 5. A positioning protrusion is provided at the edge of the opening of the connecting groove 7, making the opening width of the connecting groove 7 smaller than the width of other locations. The left and right edges of the backrest back 20 are respectively installed in the two connecting grooves 7, ensuring convenient and reliable installation. The upper end of the backrest rod 5 is connected to the end cap 8. The backrest rod 5 has a tubular structure, and the front surface of the backrest rod 5 is recessed to form a connecting groove 7.

[0042] A reinforcing crossbar 9 connects the two front leg posts 3 and the two rear leg posts 4. The reinforcing crossbar 9 between the two front leg posts 3 is located near the lower part of the front leg post 3, and the reinforcing crossbar 9 between the two rear leg posts 4 is located near the lower part of the rear leg post 4. The reinforcing crossbar 9 improves the structural strength of the entire folding chair. Anti-slip heads 10 are connected to the lower ends of both the front leg posts 3 and the rear leg posts 4, and anti-slip textures are provided on the lower surface of the anti-slip heads 10.

[0043] The front part of the rear leg 4 is rotatably connected to the seat frame 1. A hinge seat 11 is installed on the seat frame 1 and welded to it. The rear leg 4 is hinged to the hinge seat 11. A limiting member 12 is installed at the rear of the seat frame 1, which limits the movement of the front support legs and the backrest 5. A support rod 13 connects the upper parts of the two front leg 3s, providing support and positioning for the seat frame 1. When the folding chair is unfolded, the rear of the seat frame 1 is supported by the support rod 13, ensuring stability and reliability.

[0044] The chair frame 1 includes two longitudinal bars 14, with a front crossbar 15 and a rear crossbar 16 connecting them. The connection of the front and rear crossbars 15 between the two longitudinal bars 14 forms the chair frame 1, providing structural stability. The front of the longitudinal bar 14 bends downward to form a bent section 17, and the front crossbar 15 bends downward in an arc shape. The bent section 17 at the front of the longitudinal bar 14 and the arc shape of the front crossbar 15 enhance user comfort when sitting on the chair. The rear crossbar 16 passes through both ends of the two longitudinal bars 14, and its ends extend outward to form limiting members 12. A mounting groove 18 is provided on the upper surface of the longitudinal bar 14, extending along the length of the longitudinal bar 14. A limiting flange is provided at the edge of the opening of the mounting groove 18, making the opening width of the mounting groove 18 smaller than the width at other locations. The left and right edges of the seat surface 19 are respectively installed in the two mounting grooves 18, ensuring convenient and reliable installation. End caps 8 are connected to both ends of the longitudinal bars 14. The longitudinal rod 14 has a tubular structure, and the upper surface of the longitudinal rod 14 is recessed to form an installation groove 18.

[0045] A connector 21 connects the backrest and front leg 3. The connector 21 includes a front connector 22 and a rear connector 23 hinged together. The backrest and front leg 3 are hinged together via the connector 21, facilitating assembly and ensuring reliable connection. The upper end of the rear connector 23 is inserted into the lower end of the backrest 5, and the lower end of the front connector 22 is inserted into the upper end of the front leg 3. A limiting seat 24 is provided on the rear connector 23, and a slot 25 with a semi-circular structure is provided on the limiting seat 24. The limiting member 12 is engaged with the slot 25. When the folding chair is fully unfolded, the slot 25 on the limiting seat 24 engages with the limiting member 12 for positioning, thereby limiting the entire folding chair and ensuring stable support.

[0046] Connecting ears 26 are provided on the front connecting body 22 and the rear connecting body 23. A pair of connecting ears 26 are located at the front of the front connecting body 22, forming a clamping groove 27 between them. A single connecting ear 26 is located at the front of the rear connecting body 23, and the connecting ear 26 on the rear connecting body 23 is clamped within the clamping groove 27. The connecting ears 26 are hinged together by a hinge shaft 28. The front connecting body 22 and the rear connecting body 23 are joined together by abutment surfaces. One end of the abutment surface has an L-shaped structure, and the other end has an arc-shaped structure. The hinged connection between the front connecting body 22 and the rear connecting body 23 via the connecting ears 26 and the hinge shaft 28, and the joint between the abutment surfaces, ensures a stable connection.

[0047] The front connecting body 22 is provided with a positioning protrusion 29 corresponding to the mating surface, and the rear connecting body 23 is provided with a positioning groove 30 corresponding to the mating surface. After the front connecting body 22 and the rear connecting body 23 are unfolded into place, the positioning protrusion 29 is inserted into the positioning groove 30 to improve the stability of the connection between the front connecting body 22 and the rear connecting body 23. The lower end of the front connecting body 22 is provided with a lower insertion joint 31. The lower insertion joint 31 is provided with clamping ribs 32 on both the left and right sides. The lower insertion post 33 is provided on the front side of the lower insertion joint 31. The front leg 3 has a tubular structure. The inner wall of the front leg 3 is provided with a reinforcing tube 34. The lower insertion joint 31 is inserted into the upper end of the front leg 3. The lower insertion post 33 and the reinforcing tube 34 are inserted. The clamping ribs 32 abut against the inner wall of the front leg 3 for positioning.

[0048] The upper end of the rear connector 23 is provided with an upper plug 35. The upper plug 35 is provided with clamping ribs 32 on both the left and right sides. The upper plug 35 is provided with an upper plug post 36 on the front side. The inner tube 37 is provided on the lower inner wall of the backrest 5. The upper plug 35 is inserted into the lower end of the backrest 5. The upper plug post 36 and the inner tube 37 are inserted into each other. The clamping ribs 32 are abutted against and positioned against the inner wall of the backrest 5.

[0049] An adjusting screw 38 is connected to the front connecting body 22. The end of the adjusting screw 38 rests on the rear connecting body 23. By rotating the adjusting screw 38, the rear connecting body 23 is opened, and the angle of the front connecting body 22 and the rear connecting body 23 is adjusted, thereby realizing the adjustment of the backrest rod 5 and the seat frame 1 to meet the usage requirements of different users, which is flexible and convenient.

[0050] The support frames 2 on both sides of the seat frame 1 provide support for the entire folding chair. The front leg 3 and rear leg 4 are hinged together to form the support frame 2, creating a one-fold structure. The front part of the rear leg 4 is rotatably connected to the seat frame 1, creating a two-fold structure. The rear part of the front leg 3 is hinged to the backrest 5, creating a three-fold structure. When the folding chair is folded for storage, the front leg 3 and rear leg 4 fold forward and backward, the front part of the rear leg 4 folds vertically with the seat frame 1, and the rear part of the front leg 3 folds vertically with the backrest 5. This three-fold storage reduces the space occupied by the folding chair, making it easy to carry and store.

[0051] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A tri-fold storage chair characterized by, The chair includes a seat frame and two support frames located on the left and right sides of the seat frame. Each support frame includes a front leg and a rear leg that are hinged together. The rear of the front leg is hinged to a backrest, and the front of the rear leg is rotatably connected to the seat frame. A limiting device is provided at the rear of the seat frame to limit the movement of the front leg and the backrest.

2. A tri-folding storage chair according to claim 1, characterized in that A support rod connects the upper parts of the two front legs, and the support rod supports and positions the chair seat frame.

3. A tri-folding storage chair according to claim 1, wherein, A connector is provided between the backrest and the front leg post, and the connector includes a front connector and a rear connector that are hinged together.

4. A tri-folding storage chair according to claim 3, wherein A limit seat is provided on the rear connecting body, and a slot is provided on the limit seat. The limit component is engaged and connected with the slot.

5. A tri-folding storage chair according to claim 3, wherein, The upper end of the rear connector is inserted into the lower end of the backrest rod, and the lower end of the front connector is inserted into the upper end of the front foot rod.

6. A tri-folding storage chair as claimed in claim 3, wherein, Connecting ears are provided on the front and rear connecting bodies, and the connecting ears are hinged together by a hinge shaft. The front and rear connecting bodies are joined together by abutting surfaces, one end of which has an L-shaped structure and the other end of which has an arc-shaped structure.

7. A tri-folding storage chair according to any one of claims 1 to 6, characterized in that The chair frame includes two longitudinal bars, with a front crossbar and a rear crossbar connecting the two longitudinal bars.

8. A tri-folding storage chair according to claim 7, characterized in that The front part of the longitudinal bar bends downward to form a bend, and the front crossbar bends downward to form an arc-shaped structure.

9. A tri-folding storage chair according to any one of claims 1 to 6, characterized in that A hinged seat is installed on the chair frame, and the rear leg is hinged to the hinged seat.

10. A tri-folding storage chair according to any one of claims 1 to 6, characterized in that Reinforcing crossbars connect the two front legs and the two rear legs.

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