Chair frame capable of being folded and stored

Abstract

The utility model discloses a chair frame capable of being folded and stored. The chair frame comprises a bottom frame (1), a backrest rod (2) and two armrest rods (3) fixedly connected to the two ends of the backrest rod (2) respectively. Lower bent sections (4) are arranged on the two grab rails (3), and the bottom ends of the two lower bent sections (4) are hinged to the two ends of the front side of the bottom frame (1) respectively. One or more supporting rods (6) are hinged to the backrest rod (2), and a connecting groove (7) penetrating into the supporting rod (6) is formed in the bottom end face of each supporting rod (6); a screw hole (8) is formed in the position, corresponding to the lower portion of each supporting rod (6), of the rear side of the bottom frame (1), and a positioning screw (9) with a screw rod extending upwards and clamped in the corresponding connecting groove (7) in a matched mode is connected into each screw hole (8) in a threaded mode. The utility model not only is convenient to use, but also has the advantages of higher stability, attractive appearance and higher comfort.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to a foldable and storable chair frame. Background Technology

[0002] Chairs are common furniture in daily life, generally consisting of a backrest, seat cushion, armrests, and legs, taking up a considerable amount of space. ZL202122106645.1 discloses a folding chair frame and a folding chair for easy transport. This design connects the backrest frame and two armrest frames with flexible connectors, allowing the armrests to fold from the sides onto the backrest frame. This enables the chair frame to be folded and stored when not in use or during transport, improving space utilization. However, because the two armrest frames and the backrest frame are connected by flexible connectors, the seat cushion, which forms the chair surface, must be removed before folding and storage. When reused, the two armrest frames must be manipulated to align the multiple connecting slots at the bottom of the chair frame with the mounting holes on the seat cushion to form the chair surface, making it somewhat cumbersome to use.

[0003] Therefore, existing folding chair frames are inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a foldable and storable chair frame. This invention has the advantage of being easy to use.

[0005] The technical solution of this utility model is as follows: A foldable and storable chair frame includes a base frame, a backrest rod, and two armrest rods respectively fixedly connected to both ends of the backrest rod; each of the two armrest rods has a downward curved section, and the bottom ends of the two downward curved sections are respectively hinged to the two ends of the front side of the base frame; one or more support rods are hinged to the backrest rod, and each support rod has a connecting groove extending into the bottom surface of the support rod; each of the rear sides of the base frame has a screw hole corresponding to the position below each support rod, and each screw hole is threaded with a positioning screw that extends upward and engages with the connecting groove.

[0006] In the aforementioned foldable chair frame, two support rods are hinged to the backrest rod, and the two support rods are respectively hinged to the two ends of the backrest rod.

[0007] In the aforementioned foldable and storable chair frame, the top of the screw in the positioning screw is arranged in a frustum shape, which is larger at the bottom and smaller at the top.

[0008] In the aforementioned foldable and storable chair frame, a horizontal seat surface is fixedly connected to the bottom frame.

[0009] In the aforementioned foldable and storable chair frame, the seat surface is a cushion frame located within the bottom frame. Multiple parallel and spaced stop bars are fixedly connected inside the cushion frame. The top surface of the stop bars is horizontally positioned, and both ends of the stop bars are fixedly connected to the cushion frame. Multiple screw connection holes are provided on both sides of the cushion frame for screws to pass through and connect the chair to the seat.

[0010] In the aforementioned foldable and storable chair frame, a horizontally arranged round tube is provided on the front side of the bottom frame, and the two ends of the round tube are integrally connected to the bottom ends of two lower curved sections; the connection between the two ends of the round tube and the bottom ends of the lower curved sections is arc-shaped, and the two lower curved sections are arranged in an outward-opening shape.

[0011] In the aforementioned foldable chair frame, the backrest and the two armrests are all cylindrical in shape and are integrally formed.

[0012] In the aforementioned foldable chair frame, the armrest is arc-shaped at the top of the downward curve; the backrest is an open U-shape with both ends inclined downwards.

[0013] In the aforementioned foldable chair frame, the sides and back of the bottom frame, the backrest and the two armrests are all covered with an anti-slip layer, and multiple connecting strips are connected between the sides of the bottom frame and the two armrests, as well as between the back of the bottom frame and the backrest.

[0014] In the aforementioned foldable chair frame, both the anti-slip layer and the connecting straps are made of flexible straps.

[0015] Compared with the prior art, this utility model fixes two armrests to both ends of the backrest rod, and hinges the bottom ends of the upper and lower curved sections of the two armrests to the two ends of the front side of the base frame. At the same time, one or more support rods with connecting grooves on the bottom surface are hinged to the backrest rod. Each support rod has a screw hole at the position of the rear side of the base frame, and a positioning screw is threaded into the screw hole. By simply rotating the support rod, backrest rod and two armrests relative to the base frame and controlling the engagement state of the positioning screw in the screw hole on the rear side of the base frame with the corresponding support rod connecting groove, the chair frame can be switched between storage and use, making it more convenient to use.

[0016] In addition, in this utility model, there are two support rods hinged to the backrest rod, and the two support rods are respectively hinged to the two ends of the backrest rod, so that the two support rods can be connected to the two ends of the rear side of the bottom frame after being erected, which can more stably support the backrest rod on the bottom frame.

[0017] The top of the screw in the positioning screw is shaped like a frustum, wider at the bottom and narrower at the top. This allows the tip of the positioning screw to easily extend into the connecting groove on the bottom surface of the corresponding support rod, facilitating installation.

[0018] A horizontal seat surface is fixedly connected to the base frame, allowing users to sit directly on it or place a cushion on top before use. The seat surface can be a single flat panel connected within the seat frame, or it can consist of multiple horizontally arranged, parallel, spaced-apart support bars connected within the seat frame. The seat surface composed of multiple parallel, spaced-apart support bars ensures stability while saving material. Multiple screw holes are provided on both sides of the seat frame, allowing for easy connection to the chair or stool using screws.

[0019] The bottom ends of the two lower curved sections are integrally connected by a round tube located on the front side of the bottom frame, so that the backrest, the two armrests and the round tube can form a whole, with strong structural stability and not easy to wobble during use; at the same time, the arc of the top surface of the round tube is not easy to rest on the user's legs, and the comfort is good; the two lower curved sections are set outward, making it convenient for the user to sit between the two armrests, and the user's hands can be comfortably placed on the two armrests.

[0020] The backrest and two armrests are molded as one piece, resulting in high stability. Both the backrest and the two armrests are cylindrical, making them less likely to rub against the user and providing a high level of comfort. At the same time, the top of the lower curved section of the armrests is arc-shaped, and the backrest is an open U-shape with both ends sloping downwards, resembling the shape of a round-backed chair, which is both aesthetically pleasing and highly comfortable.

[0021] The sides and back of the bottom frame, the backrest, and the two armrests are all covered with a non-slip layer made of flexible straps (the flexible straps can be cotton or linen straps, PE rattan, or waterproof webbing, etc.), which provides good anti-slip properties and comfort for users. Multiple connecting strips made of flexible straps are connected between the sides of the bottom frame and the two armrests, as well as between the back of the bottom frame and the backrest, which improves the overall strength and stability while making it easy to fold and store.

[0022] Therefore, this utility model is not only easy to use, but also has the advantages of high stability, beautiful appearance and high comfort. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a structural diagram of the bottom frame.

[0025] Figure 3 This is a sectional view of the support rod;

[0026] Figure 4 This is a schematic diagram of the positioning screw.

[0027] The markings in the attached diagram are: 1-bottom frame, 2-backrest rod, 3-armrest rod, 4-lower bend, 6-support rod, 7-connecting groove, 8-screw hole, 9-positioning screw, 10-seat cushion frame, 11-screw connection hole, 12-stop bar, 14-round tube. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0029] Example: A foldable and retractable chair frame, configured as follows... Figures 1 to 4 As shown, the backrest includes a base frame 1, a backrest rod 2, and two armrest rods 3 fixedly connected to both ends of the backrest rod 2. Each of the two armrest rods 3 has a downward bend 4, and the bottom ends of the two downward bends 4 are respectively hinged to the two ends of the front side of the base frame 1. One or more support rods 6 are hinged to the backrest rod 2, and each support rod 6 has a connecting groove 7 that extends into the bottom end face of the support rod 6. The rear side of the base frame 1 has screw holes 8 corresponding to the position below each support rod 6, and each screw hole 8 is threaded with a positioning screw 9 that extends upward and engages with the connecting groove 7.

[0030] Two support rods 6 are hinged to the backrest rod 2, and the two support rods 6 are respectively hinged to the two ends of the backrest rod 2; the top of the screw in the positioning screw 9 is set in a frustum shape with a larger bottom and a smaller top; a horizontal seat surface is fixedly connected to the bottom frame 1; the seat surface is a seat cushion frame 10 located inside the bottom frame 1, and multiple parallel and spaced stop rods 12 are fixedly connected inside the seat cushion frame 10. The top surface of the stop rods 12 is set horizontally, and both ends of the stop rods 12 are fixedly connected to the seat cushion frame 10; both sides of the seat cushion frame 10 are provided with multiple screw connection holes 11 for screws to pass through and connect the chair; a horizontally arranged round tube 14 is provided on the front side of the bottom frame 1, and both ends of the round tube 14 are connected to two The bottom end of the lower bend section 4 is integrally connected; the two ends of the round tube 14 are arc-shaped at the connection points with the bottom end of the lower bend section 4, and the two lower bend sections 4 are arranged outwards; the backrest rod 2 and the two armrest rods 3 are all cylindrical, and the backrest rod 2 and the two armrest rods 3 are integrally formed; the armrest rods 3 are arc-shaped corresponding to the top position of the lower bend section 4; the backrest rod 2 is an open U-shape, and the two ends of the backrest rod 2 are inclined downwards; the two sides and the back of the bottom frame 1, the backrest rod 2 and the two armrest rods 3 are all covered with an anti-slip layer, and multiple connecting strips are connected between the two sides of the bottom frame 1 and the two armrest rods 3, as well as between the back of the bottom frame 1 and the backrest rod 2; the anti-slip layer and the connecting strips are all made of flexible straps.

[0031] Working principle: When needed, the backrest rod 2 is moved upwards. At this time, the two armrest rods 3, which are integrally connected to the backrest rod 2, are moved synchronously. The bottom ends of the upper and lower curved sections 4 of the two armrest rods 3 will rotate upwards relative to the front ends of the bottom frame 1. Then, the support rods 6 at both ends of the backrest rod 2 are rotated downwards to a vertical position, and the connecting groove 7 at the bottom of the support rod 6 is aligned with the screw hole 8 on the rear side of the bottom frame 1. Then, the screw of the positioning screw 9 extends upwards from the screw hole 8 and is engaged in the connecting groove 7 (the length of the screw of the positioning screw 9 engaged in the connecting groove 7 is about 5cm, which provides good stability). This fixes the support rod 6 vertically on the bottom frame 1, and positions and fixes the backrest rod 2 and the two armrest rods 3 on the bottom frame, forming the chair frame.

[0032] When folding and storing is required, simply turn the positioning screw 9 to move the positioning screw 9 downward relative to the screw hole 8, and separate the screw on the positioning screw 9 from the connecting groove 7 on the support rod 6. Then, the support rod can be rotated to the horizontal, and the two upright armrest rods 3 and backrest rods 2 can be rotated downward relative to the front ends of the bottom frame 1 and brought closer to the bottom frame 1.

[0033] After placing the chair / stool under the seat cushion frame 10, pass multiple screws through the screw connection holes 11 on both sides of the seat cushion frame 10 to fix the chair / stool under the seat cushion frame 10, thus completing the seat installation. Users can sit directly on the multiple stops 12 inside the seat cushion frame 10 or place the cushion on the seat cushion frame 10 and then sit on the cushion.

[0034] The backrest rod 2, the two armrest rods 3, and the round tube 14 are integrated into one piece, resulting in high overall structural stability. The round tube 14 is located on the front side of the base frame 1, and its curved outer surface is less likely to rest on the user's legs, thus providing good comfort. The two armrest rods 3 are set outwards from the ends of the round tube 14, making it easier for the user to sit between the two armrest rods 3, and allowing the user's hands to rest more comfortably on the armrest rods 3. The shape of the backrest rod 2 and the two armrest rods 3 is similar to the shape of the corresponding positions on the round chair, making it aesthetically pleasing and comfortable to use. A non-slip layer is formed by wrapping flexible straps around the sides and back of the base frame 1, the backrest 2, and the two handrails 3. During the wrapping process, the straps are alternately wrapped between the top of the two handrails 3 and the sides of the base frame 1, and alternately wrapped between the backrest 2 and the back of the base frame 1, thus forming a connecting strap (i.e., the flexible straps are wrapped around the top of the handrail 3 one or more times and then led down to the base frame 1, wrapped around the base frame 1 once, and then led up to the top of the handrail 3, and the straps are continued to be wrapped on the side where the flexible straps have already been wrapped, and then the flexible straps are led to the base frame 1, and then the straps are continued to be wrapped on the side where the flexible straps have already been wrapped).

Claims

1. A foldable and storable chair frame, comprising a base frame (1), a backrest rod (2), and two armrest rods (3) respectively fixedly connected to both ends of the backrest rod (2); characterized in that: Both of the armrests (3) are provided with a downward bend (4), and the bottom ends of the two downward bends (4) are respectively hinged to the two ends of the front side of the base frame (1); one or more support rods (6) are hinged to the backrest (2), and each support rod (6) has a connecting groove (7) that extends into the support rod (6) on its bottom end surface; the rear side of the base frame (1) is provided with screw holes (8) corresponding to the position below each support rod (6), and each screw hole (8) is threaded with a positioning screw (9) that extends upward and engages with the connecting groove (7).

2. The foldable and storable chair frame according to claim 1, characterized in that: Two support rods (6) are hinged to the backrest rod (2), and the two support rods (6) are respectively hinged to the two ends of the backrest rod (2).

3. The foldable and storable chair frame according to claim 1, characterized in that: The top of the screw in the positioning screw (9) is shaped like a frustum, with the bottom larger than the top.

4. A foldable and storable chair frame according to claim 1, characterized in that: A horizontal chair surface is fixedly connected to the bottom frame (1).

5. A foldable and storable chair frame according to claim 4, characterized in that: The seat surface is a cushion frame (10) located inside the bottom frame (1). Multiple parallel and spaced baffles (12) are fixedly connected inside the cushion frame (10). The top surface of the baffles (12) is horizontally set, and both ends of the baffles (12) are fixedly connected to the cushion frame (10). Multiple screw connection holes (11) are provided on both sides of the cushion frame (10) for screws to pass through and connect the chair.

6. A foldable and storable chair frame according to claim 1, characterized in that: A horizontally arranged circular tube (14) is provided on the front side of the bottom frame (1). The two ends of the circular tube (14) are integrally connected to the bottom ends of the two lower bends (4). The connection between the two ends of the circular tube (14) and the bottom ends of the lower bends (4) is arc-shaped, and the two lower bends (4) are arranged in an outward-opening manner.

7. A foldable and storable chair frame according to claim 1, characterized in that: The backrest rod (2) and the two armrest rods (3) are all cylindrical in shape and are integrally formed.

8. A foldable and storable chair frame according to claim 1, characterized in that: The handrail (3) is arc-shaped at the top of the lower bend (4); the backrest (2) is an open U-shape, and the two ends of the backrest (2) are inclined downwards.

9. A foldable and storable chair frame according to claim 1, characterized in that: The bottom frame (1) is covered with an anti-slip layer on both sides and the back, the backrest (2) and the two handrails (3). Multiple connecting strips are connected between the bottom frame (1) and the two handrails (3) and between the bottom frame (1) and the backrest (2).

10. A foldable and storable chair frame according to claim 9, characterized in that: Both the anti-slip layer and the connecting tape are made of flexible straps.

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