Demountable and integrated folding and unfolding office chair and seat bearing foot (frame and plate)

Abstract

The invention relates to the technical field of legs (frames and plates) for bearing office chairs and chairs, and provides a detachable and integrated folding and unfolding device. The device comprises a central base, chair legs and a fixed cover plate, wherein an inner screw mounting hole, a limiting opening and a clamping groove are formed in the front surface of the central base; clamping bolts are arranged at the front ends of the chair legs, and trundle mounting holes are formed in the rear ends; the fixed cover plate is provided with a screw through hole. By clamping and pulling out the clamping bolt and the clamping groove, bare-handed quick disassembly and assembly are achieved; the fixing cover plate is locked with a screw of the central base, so that the stability is ensured; the chair legs can be folded and unfolded by hands due to the design of the limiting openings, and flexibility and practicability are improved. Compared with the prior art, the device has the advantages that the device can be quickly disassembled and assembled by hands without tools; the folding function of the chair legs saves storage and transportation space and reduces cost; the structure is compact and stable, bearing requirements are met, and market application value is high. The invention provides an efficient, flexible and economical office chair and chair bearing foot (frame and plate), and the diversified requirements of users are met.

Description

Technical Field

[0001] The present invention relates to the technical field of office chairs and feet (plates) for seat bearing, and specifically to a detachable, integrally foldable and deployable office chair and a foot (frame, plate) for seat bearing. Background Art

[0002] Most of the existing office chairs and feet (frames, plates) for seat bearing adopt fixed structures and are not detachable, foldable or deployable, resulting in a large space occupation during storage and transportation and increasing the economic cost. Although some products are detachable, they usually need to divide the structure into multiple independent components, and complicated installation and assembly are required with the aid of tools during actual use, which not only increases the difficulty of use for users, but also leads to insufficient bearing capacity due to design defects, posing potential safety hazards. Summary of the Invention

[0003] The purpose of the present invention is to provide a detachable, integrally foldable and deployable office chair and a foot (frame, plate) for seat bearing, whose structural design enables users to complete the disassembly, folding and deployment operations of the chair feet without any installation tools, thereby significantly saving space and reducing economic costs during storage and transportation.

[0004] The detachable, integrally foldable and deployable office chair and the foot (frame, plate) for seat bearing of the present invention include the following structures: A central base (222), an internal screw installation hole (223), a limiting port (224), a card slot (225), and a pneumatic lift rod insertion through hole (226); The rear end of the chair leg (333) has a retaining pin (334), and a caster installation hole (335) is buried inside the front end; The fixed cover plate (555) has a screw through hole (556).

[0005] During assembly, the retaining pin (334) of the chair leg (333) is snapped into the card slot (225) of the central base (222). After all the chair legs (333) are respectively snapped in, the fixed cover plate (555) is covered, and a screw is used to lock the internal screw installation hole (223) of the central base (222) through the screw through hole (556) of the fixed cover plate (555). At this time, the chair leg (333) can be folded inward by hand to form an umbrella shape; during use, the chair leg (333) only needs to be unfolded outward by hand and placed on the ground to serve as the bearing foot (frame, plate) of the office chair and the seat.

[0006] The card slot (225) of the central base (222); the retaining pin (334) at the rear end of the corresponding chair leg (333) is a mother-child snap-lock disassembly device, realizing the quick disassembly and assembly of the chair leg.

[0007] The central base (222) and the limiting opening (224) provide the space and limiting device for the folding and unfolding of the chair legs (333).

[0008] After the fixing cover plate (555) is latched to the rear end pin (334) of the chair leg (333) and inserted into the card slot (225) of the central base (222), the screw through hole (556) of the fixing cover plate (555) is locked with the internal screw mounting hole (223) of the central base (222) using screws to prevent the chair legs from sagging when the chair is lifted up.

[0009] The innovation of the above-mentioned detachable, integrated folding and unfolding feet (frames, trays) for office chairs and seat carriers lies in its integrated design, combined with the mother-child lock structure and the limiting device, realizing the functions of rapid disassembly, folding and unfolding of the chair legs, while ensuring the stability and practicality of the structure. It saves a large amount of space volume during storage and transportation, thus greatly reducing the economic cost of storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram of the main body of the detachable, foldable and unfoldable feet (frames, trays) for office chairs and seat carriers of the present invention; Figure 2 is a schematic structural diagram of the detachable, foldable and unfoldable feet (frames, trays) for office chairs and seat carriers of the present invention; Figure 3 is a schematic diagram of the folding angle of the detachable, foldable and unfoldable feet (frames, trays) for office chairs and seat carriers of the present invention; Figure 4 is a schematic diagram of the unfolding angle of the detachable, foldable and unfoldable feet (frames, trays) for office chairs and seat carriers of the present invention; Description of the drawing reference numerals: 222 - central base, 223 - internal screw mounting hole, 224 - limiting opening, 225 - card slot, 226 - pneumatic lift rod insertion hole, 333 - chair leg, 334 - pin, 335 - internal buried caster mounting hole, 555 - fixing cover plate, 556 - screw through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0012] Embodiment 1: See Figures 1 to 4As shown, the detachable, integrally foldable and deployable office chair and the foot (stand, plate) for seat bearing of the present invention include a central base (222), an internal screw mounting hole (223), a limit port (224), a card slot (225) and a pneumatic lift rod insertion through hole (226); a retaining pin (334) is provided at the rear end of the chair leg (333), and a caster mounting hole (335) is buried inside the front end; a screw through hole (556) is provided on the fixed cover plate (555). During assembly, the retaining pin (334) of the chair leg (333) is snapped into the card slot (225) of the central base (222). After all the chair legs (333) are respectively snapped in, the fixed cover plate (555) is covered, and screws are used to lock the internal screw mounting hole (223) of the central base (222) through the screw through hole (556) of the fixed cover plate (555). At this time, the chair legs (333) can be folded inward by hand to form an umbrella shape; during use, just unfold the chair legs (333) outward by hand and place them on the ground, and they can be used as the bearing feet (stands, plates) of the office chair and the seat. Without any professional technical experience, the operator can complete the operation independently.

[0013] Finally, it should be noted that although the specific embodiments of the present invention have been shown and described, those skilled in the art should understand that these embodiments are only used to illustrate the technical solutions of the present invention and do not constitute a limitation to its scope. Without departing from the core principle and spirit of the present invention, any modification, replacement, improvement, etc. to the above embodiments shall fall within the protection scope of the present invention. The protection scope of the present invention is defined by the appended claims and their equivalents, and any equivalent design and improvement made within the scope of the claims shall be covered by the technical solutions of the present invention.

Claims

1. A detachable, integrated folding and unfolding office chair and a foot (frame, plate) for carrying the seat, characterized by: The chair leg (333) comprises a central base (222), an inner screw mounting hole (223), a limit opening (224), a slot (225) and a gas pressure lifting rod insertion hole (226); the rear end of the chair leg (333) is provided with a bayonet (334), and the front end is provided with a caster mounting hole (335); the fixed cover plate (555) is provided with a screw through hole (556). During assembly, the bayonet (334) of the chair leg (333) is inserted into the slot (225) of the central base (222), and after all the chair legs (333) are inserted into the corresponding slots, the fixed cover plate (555) is covered, and screws are used to lock the fixed cover plate (555) with the inner screw mounting hole (223) of the central base (222) through the screw through hole (556) of the fixed cover plate (555). At this time, the chair legs (333) can be folded inwards by hand to form an umbrella-like shape; when in use, the chair legs (333) only need to be unfolded outwards by hand and placed on the ground to serve as the supporting legs (frame, plate) of an office chair or a seat.

2. The detachable, integrated folding and unfolding office chair and the foot (frame, plate) for carrying the seat according to claim 1, characterized in that: The latching groove (225) of the central base (222) and the latching pin (334) at the rear end of the chair leg (333) form a parent-child latch disassembly device, which is convenient for manual disassembly and assembly.

3. The detachable, integrated folding and unfolding office chair and the foot (frame, plate) for carrying the seat according to claim 1, characterized in that: The limiting opening (224) of the central base (222) provides space and a limiting function for the chair legs (333) to be folded and unfolded.

4. The detachable, integrated folding and unfolding office chair and the foot (frame, plate) for carrying the seat according to claim 1, characterized in that: The fixed cover plate (555) is locked with the pin (334) at the rear end of the chair leg (333) into the slot (225) of the central base (222) by means of screws and is then fastened to the inner screw mounting hole (223) of the central base (222) to prevent the chair leg (333) from sagging when the chair is lifted.

5. The detachable, integrated folding and unfolding office chair and the foot (frame, plate) for carrying the seat according to claim 1, characterized in that: A caster mounting hole (335) is embedded in the front end of the chair leg (333), facilitating quick installation and use of the caster.

6. The detachable, integrated folding and unfolding office chair and the foot (frame, plate) for carrying the seat according to claim 1, characterized in that: The gas pressure rod of the central base (222) is inserted into the through hole (226), and the gas pressure lifting rod can be directly inserted into the hole, and the lifting function of the office chair and the seat can be realized through the mechanism of the office chair and the seat.

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