Portable lifting chair

Abstract

The utility model discloses a portable lifting chair which comprises a front foot pipe assembly, a chair pipe assembly, a backrest pipe assembly and a rear foot pipe assembly, the front end of the chair pipe assembly is hinged to the bottom end of the front foot pipe assembly through a front fork pipe to be folded, the top end of the front foot pipe assembly is hinged to a handrail assembly, and a seat-back connecting piece is installed at the rear end of the chair pipe assembly. The front end of the seat-back connecting piece is hinged to the lower end of the backrest pipe assembly, the rear leg pipe assembly is sleeved with a sliding sleeve, and the sliding sleeve is hinged to the seat-back connecting piece; the chair tube assembly comprises a left chair tube and a right chair tube, the left chair tube and the right chair tube are hinged to a rear fork tube through a third U-shaped connecting piece, and the other opposite end of the rear fork tube is connected with the upper end of the backrest tube assembly. The lifting piece is pulled to sequentially drive the rear fork pipe, the backrest pipe assembly, the chair pipe assembly and the front foot pipe assembly to be folded, folding of the whole chair frame is achieved, the packaging material size is small, carrying is convenient, and comfort is high.

Description

Technical Field

[0001] This utility model relates to the field of portable chair technology, specifically a lift-up portable chair. Background Technology

[0002] Folding chairs are lightweight, stackable seats that are easy to move and save space. Common folding chairs are mainly composed of metal tubing and flexible materials such as Oxford cloth. Folding joints are connected with rivets and virgin plastic parts, and depending on the specific product, additional features may be added, such as cup holders, control panels, storage bags, footrests, and sun visors.

[0003] Although there are many types of folding chairs available, most of them use a front-to-back folding structure and cannot fold in the left-to-right direction to further reduce space.

[0004] To address the issue of folding chairs in the left-right direction, Chinese utility model patent CN104856487B discloses a foldable chair frame. This frame features a folding structure composed of a parallel four-bar linkage between the left and right backrests. In use, the chair frame folds or unfolds in the left-right direction by moving the middle linkage rod of the parallel four-bar linkage up and down. However, because all kinematic pairs in the parallel four-bar linkage are hinged revolute joints, this frame suffers from unpredictable motion. Even slight movement of the middle linkage rod can cause the chair frame to fold or unfold in the left-right direction. This uncertainty results in poor stability when the chair frame is unfolded, making it prone to collapse due to excessive force or accidental contact by the user, thus posing a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to provide a pull-up portable chair that, by pulling the lifting component, sequentially drives the rear fork tube, backrest tube assembly, chair tube assembly, and front leg tube assembly to fold, thereby realizing the folding of the entire chair frame. It has a small packaging volume, is easy to carry, and is highly comfortable, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A portable lift chair includes a front leg tube assembly, a seat tube assembly, a backrest tube assembly, and a rear leg tube assembly. The front end of the seat tube assembly is hinged to the bottom end of the front leg tube assembly via a front fork tube for folding. An armrest assembly is hinged to the top end of the front leg tube assembly. A seat-back connector is installed at the rear end of the seat tube assembly. The front end of the seat-back connector is hinged to the lower end of the backrest tube assembly. A sliding sleeve is fitted onto the rear leg tube assembly. The sliding sleeve is hinged to the seat-back connector via a pivot. The seat-back connector is U-shaped, wrapping around the seat tube assembly from bottom to top, and has a protruding piece at the front end, which is hinged to the backrest tube assembly via a pivot.

[0008] The chair tube assembly includes a left chair tube and a right chair tube, and the left chair tube and the right chair tube are hinged to a rear fork tube by a third U-shaped connector. The other end of the rear fork tube is connected to the upper end of the backrest tube assembly.

[0009] A horizontal support tube assembly is also hinged between the left and right chair tubes. The horizontal support tube assembly includes a first horizontal support tube hinged to the right chair tube and a second horizontal support tube hinged to the left chair tube. The first and second horizontal support tubes are hinged together by a lifting member to achieve folding.

[0010] The armrest assembly includes a left armrest and a right armrest. One end of the armrest assembly is hinged to the backrest tube assembly and is folded synchronously when the backrest tube assembly is folded inward.

[0011] The front leg tube assembly includes a left front leg tube and a right front leg tube, the seat tube assembly includes a left seat tube and a right seat tube, and there are two front fork tubes. One front fork tube is hinged at one end to the left seat tube via a first U-shaped connector, and the other end is hinged to the right front leg tube via a first U-shaped connector. The other front fork tube is hinged at one end to the right seat tube via a first U-shaped connector, and the other end is hinged to the left front leg tube via a first U-shaped connector.

[0012] The seat-back connector includes a left arc-shaped backrest tube and a right arc-shaped backrest tube. The left arc-shaped backrest tube and the right arc-shaped backrest tube are connected to a second U-shaped connector via a backrest top U-shaped connector. There are two rear fork tubes. One rear fork tube is hinged at one end to the seat-back connector of the left seat tube via a third U-shaped connector, and the other end is hinged to the backrest top U-shaped connector of the right arc-shaped backrest tube via a second U-shaped connector. The other rear fork tube is hinged at one end to the seat-back connector of the right seat tube via a third U-shaped connector, and the other end is hinged to the backrest top U-shaped connector of the left arc-shaped backrest tube via a second U-shaped connector.

[0013] The first lateral support tube is hinged to the third U-shaped connector of the right seat tube and is coaxially linked with the rear fork tube. The second lateral support tube is hinged to the third U-shaped connector of the left seat tube and is coaxially linked with the rear fork tube. By pulling the lifting device, the rear fork tube can be folded.

[0014] The rear leg tube assembly includes a left rear leg tube and a right rear leg tube.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model relates to a pull-up portable chair, a lightweight, easy-to-fold, and portable seat designed specifically for outdoor activities. Lightweight and portable: The pull-up portable chair is lightweight, easy to fold and carry, and suitable for use outdoors, while traveling, and shopping. Stable structure: The reasonable structural design provides a stable sitting experience. High comfort: The seat and backrest are ergonomically designed, providing good support, especially when reclining. Convenient storage: It features an easy-to-store design and can be quickly folded when not in use, saving space. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram (1) of the structure of a pull-up portable chair according to the present invention.

[0019] Figure 2 This is a structural schematic diagram (2) of a liftable portable chair according to the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of a pull-up portable chair after folding.

[0021] In the diagram: 1-Left curved backrest tube; 2-Right curved backrest tube; 3-Horizontal support tube assembly; 4-Sliding sleeve; 5-Right rear leg tube; 6-Right front leg tube; 7-Front fork tube; 8-First U-shaped connector; 9-Left rear leg tube; 10-Left front leg tube; 11-Left armrest; 12-Seat back connector; 13-Second U-shaped connector; 14-Backrest U-shaped component; 15-Rear fork tube; 16-Lifting component; 17-First horizontal support tube; 18-Second horizontal support tube; 19-Third U-shaped connector; 20-Left seat tube; 21-Right seat tube. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3A portable lift chair includes a front leg tube assembly, a chair tube assembly, a backrest tube assembly, and a rear leg tube assembly. The front end of the chair tube assembly is hinged to the bottom end of the front leg tube assembly via a front fork tube 7 for folding. An armrest assembly is hinged to the top end of the front leg tube assembly. A seat-back connector 12 is installed at the rear end of the chair tube assembly. The front end of the seat-back connector 12 is hinged to the lower end of the backrest tube assembly. A sliding sleeve 4 is fitted onto the rear leg tube assembly, and the sliding sleeve 4 is hinged to the seat-back connector 12 via a pivot. The seat-back connector 12 is U-shaped, wrapping around the chair tube assembly from bottom to top, and has a protruding piece at the front end, which is hinged to the backrest tube assembly via a pivot. The rear leg tube assembly includes a left rear leg tube 9 and a right rear leg tube 5.

[0024] The chair tube assembly includes a left chair tube 20 and a right chair tube 21. The left chair tube 20 and the right chair tube 21 are hinged together by a rear fork tube 15 via a third U-shaped connector 19. The other end of the rear fork tube 15 is connected to the upper end of the backrest tube assembly. A horizontal support tube assembly 3 is also hinged between the left chair tube 20 and the right chair tube 21. The horizontal support tube assembly 3 includes a first horizontal support tube 17 hinged to the right chair tube 21 and a second horizontal support tube 18 hinged to the left chair tube 20. The first horizontal support tube 17 and the second horizontal support tube 18 are hinged together by a lifting member 16 to achieve folding. The armrest assembly includes a left armrest 11 and a right armrest. One end of the armrest assembly is hinged to the backrest tube assembly and is folded synchronously when the backrest tube assembly is folded inward.

[0025] The front leg tube assembly includes a left front leg tube 10 and a right front leg tube 6. The seat tube assembly includes a left seat tube 20 and a right seat tube 21. There are two front fork tubes 7. One front fork tube 7 is hinged at one end to the left seat tube 20 via a first U-shaped connector 8, and at the other end to the right front leg tube 6 via a first U-shaped connector 8. The other front fork tube 7 is hinged at one end to the right seat tube 21 via a first U-shaped connector 8, and at the other end to the left front leg tube 10 via a first U-shaped connector 8.

[0026] The seat-back connector 12 includes a left arc-shaped backrest tube 1 and a right arc-shaped backrest tube 2. The left arc-shaped backrest tube 1 and the right arc-shaped backrest tube 2 are connected to a second U-shaped connector 13 via a backrest top U-shaped component 14. There are two rear fork tubes 15. One rear fork tube 15 is hinged at one end to the seat-back connector 12 of the left chair tube 20 via a third U-shaped connector 19, and the other end is hinged to the backrest top U-shaped component 14 of the right arc-shaped backrest tube 2 via the second U-shaped connector 13. The other rear fork tube 15 is hinged at one end to the seat-back connector 12 of the right chair tube 21 via a third U-shaped connector 19, and the other end is hinged to the backrest top U-shaped component 14 of the left arc-shaped backrest tube 1 via the second U-shaped connector 13. The first lateral support tube 17 is hinged to the third U-shaped connector 19 of the right seat tube 21 and is coaxially linked with the rear fork tube 15. The second lateral support tube 18 is hinged to the third U-shaped connector 19 of the left seat tube 20 and is coaxially linked with the rear fork tube 15. By pulling the lifting member 16, the rear fork tube 15 can be folded.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable lift chair, comprising a front leg tube assembly, a chair tube assembly, a backrest tube assembly, and a rear leg tube assembly, characterized in that: The front end of the chair tube assembly is folded by hinged connection between the front fork tube and the bottom end of the front leg tube assembly. The top end of the front leg tube assembly is hinged to the armrest assembly. The rear end of the chair tube assembly is equipped with a seat and back connector. The front end of the seat and back connector is hinged to the lower end of the backrest tube assembly. The rear leg tube assembly is fitted with a sliding sleeve, which is hinged to the seat and back connector. The chair tube assembly includes a left chair tube and a right chair tube, and the left chair tube and the right chair tube are hinged to a rear fork tube by a third U-shaped connector. The other end of the rear fork tube is connected to the upper end of the backrest tube assembly. A horizontal support tube assembly is also hinged between the left and right chair tubes. The horizontal support tube assembly includes a first horizontal support tube hinged to the right chair tube and a second horizontal support tube hinged to the left chair tube. The first and second horizontal support tubes are hinged together by a lifting member to achieve folding.

2. The portable lift chair according to claim 1, characterized in that: The armrest assembly includes a left armrest and a right armrest, and one end of the armrest assembly is hinged to the backrest tube assembly.

3. A portable lift chair according to claim 1 or 2, characterized in that: The front leg tube assembly includes a left front leg tube and a right front leg tube, the seat tube assembly includes a left seat tube and a right seat tube, and there are two front fork tubes. One front fork tube is hinged at one end to the left seat tube via a first U-shaped connector, and the other end is hinged to the right front leg tube via a first U-shaped connector. The other front fork tube is hinged at one end to the right seat tube via a first U-shaped connector, and the other end is hinged to the left front leg tube via a first U-shaped connector.

4. A portable lift chair according to claim 1, characterized in that: The seat-back connector includes a left arc-shaped backrest tube and a right arc-shaped backrest tube. The left arc-shaped backrest tube and the right arc-shaped backrest tube are connected to a second U-shaped connector via a backrest top U-shaped connector. There are two rear fork tubes. One rear fork tube is hinged at one end to the seat-back connector of the left seat tube via a third U-shaped connector, and the other end is hinged to the backrest top U-shaped connector of the right arc-shaped backrest tube via a second U-shaped connector. The other rear fork tube is hinged at one end to the seat-back connector of the right seat tube via a third U-shaped connector, and the other end is hinged to the backrest top U-shaped connector of the left arc-shaped backrest tube via a second U-shaped connector.

5. A portable lift chair according to claim 1, characterized in that: The first lateral support tube is hinged to the third U-shaped connector of the right seat tube and is coaxially linked with the rear fork tube; the second lateral support tube is hinged to the third U-shaped connector of the left seat tube and is coaxially linked with the rear fork tube.

6. A portable lift chair according to claim 1, characterized in that: The rear leg tube assembly includes a left rear leg tube and a right rear leg tube.

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