Module foot stool structure of chair

Abstract

The utility model relates to a modular foot stool structure of a chair, which can be widely applied between chair seats and chair legs of various chairs and can be easily assembled, so that consumers can easily assemble the chair seats and the chair legs of the various chairs by themselves. The chair seat and the chair legs can be freely changed and applied in different colors according to home decoration colors and different decoration visual requirements, and the chair has the practical benefits of being firm in structure, few in parts, low in production and transportation cost, high in utilization value, long in service life and capable of effectively improving the industrial utilization property and the economic benefit property. The connecting base is assembled and fixed at the bottom of the chair seat, the modularized chair legs can be assembled at preset screwing positions of the connecting base, a body of the connecting base is provided with more than one group of through assembling holes for screws to be screwed and fixed at the bottom of the chair seat, the connecting base is fixedly assembled at the bottom of the chair seat, and the chair legs are screwed on the connecting base. And the effect of easily assembling the chair legs of the chair module is achieved.

Description

Technical Field

[0001] The utility model relates to a chair foot frame structure, in particular to a modular chair foot frame structure capable of easily assembling chair legs. Background Art

[0002] Generally, most of the known indoor chairs are divided into dining chairs, office chairs and leisure chairs. In terms of the structure and shape design of the related leisure chairs, most of them are made of wood, metal and plastic. The different materials used result in different chair textures and corresponding structural technical creations. In general, in the technical creation of the use of these different materials, due to the differences in the design creation ideas, under the limitations of different materials and different bearing strengths, the structural shape design that can be bent out of wood is relatively limited, and its strength is not as good as that of metal materials. Although the strength of metal materials is high, the structural shape design that can be bent out is also relatively limited. Therefore, plastic materials take advantage of their plasticity and the ability to better meet the requirements of the design concept to create various three-dimensional streamlined artistic shapes.

[0003] At the same time, the use of plastic materials can also effectively reduce the use of wood and reduce the environmental impact of felling trees, and can achieve the industrial economic benefits of recycling (plastic) materials and enhancing the value of material use. However, due to the relatively cold texture of plastic materials and the weak material strength, the bonding strength and durability of plastic parts must be improved through the synthesis and thickness of the materials. Therefore, when plastic materials are used in chairs with a downward angle to increase the ground contact area and stable load-bearing efficiency, it is necessary to use transversely connected rods or plates between the chair legs to combine the chair legs to produce complementary structural strength and enhance the load-bearing capacity. As a result, there is an unavoidable transverse connection shape between the plastic chair legs, which limits the original plastic advantages of the plastic material and the creative application advantages such as artistic modeling that can better match the design concept. At the same time, since the chair body made of all-plastic material is fixed in size, the transportation costs caused by the space occupied during transportation are also more troublesome to the industry.

[0004] Therefore, chairs that are created by combining and combining composite materials that can be disassembled and assembled have been produced. Although chairs created by combining and combining composite materials have excellent modeling and artistic texture, the combination of metal components and plastic legs often leads to a short service life due to the cracking of the plastic material. In particular, the part where the metal bottom of the chair seat and the plastic legs are screwed to each other is often prone to loosening of the legs and the entire chair being unusable due to the collapse of the threads. Although new legs can be replaced, the old legs must be discarded simply because of the damaged threads, which also causes material and economic waste.

[0005] Therefore, the creator of the present utility model has invented prior art creations that have been approved for patents, such as the technical creations with publication numbers TWM500511 U, CN 201420737218.0, and US 9723927 B2. The main feature of this technical creation is that it effectively improves the shortcomings of the aforementioned known prior art, and creates a metal chair leg frame that can be assembled at the bottom of the chair seat, and several supporting chair legs assembled on the metal chair leg frame, to complete a chair leg assembly structure that is innovative, practical, and economical. However, in actual production, sales, and use, there is indeed still a need for further improvement and improvement of novelty, practicality, and innovative use and efficiency. Utility Model Content

[0006] The main purpose of the modular footrest structure of the chair of this utility model is to:

[0007] (1) Provide a more innovative and effective modular footrest structure that can be widely used in various types of seats.

[0008] (2) Provide a more innovative and effective modular stand structure that consumers can DIY assemble or update, and can freely change the colors of the modular stand according to the decorative colors of different places of use and different visual requirements of the furnishings.

[0009] (3) Provide a more innovative and effective modular tripod structure with a reliable structure, and further generate industrial practicality and economic benefits with fewer components and easy assembly and replacement.

[0010] (4) Provide a more innovative and cost-effective production technology and a modular chair leg structure with a more economical and low transportation cost.

[0011] (5) Provide a chair that can be easily restored to full use when a chair leg is damaged by simply replacing the chair seat or the connecting base or any chair leg that needs to be replaced, thereby achieving excellent utilization value and extending service life.

[0012] (6) Provide a modular tripod structure that has a fast production efficiency and can effectively improve industrial utilization and economic benefits.

[0013] The modular leg structure of the chair includes a seat, a connecting base assembled on the bottom of the seat, a plurality of through-connecting holes provided on the connecting base for pre-screwed connection of a plurality of chair legs, an outer screw extending upward from the top of the chair leg that passes through and is fixedly connected to the through-connecting hole of the connecting base, and the main body of the connecting base is provided with one or more through-assembly holes for screwing and fixing to the bottom of the seat.

[0014] As another embodiment of the present invention, the connecting base is provided with a plurality of through-connecting holes for pre-screw connection of a plurality of chair legs, including at least one front chair leg through-connecting hole and at least one rear chair leg through-connecting hole.

[0015] As another embodiment of the present invention, the axis line of the front chair leg passing through the connecting hole provided on the connecting base is a horizontal line that is not perpendicular to the ground plane, and the axis line of the rear chair leg passing through the connecting hole is also a horizontal line that is not perpendicular to the ground plane.

[0016] As another embodiment of the present invention, the inclination angle formed between the axis line of the front chair leg passing through the connecting hole provided on the connecting base and the horizontal line of the ground plane is the same as or different from the inclination angle formed between the axis line of the rear chair leg passing through the connecting hole and the horizontal line of the ground plane.

[0017] As another embodiment of the present invention, the upper end of each of the several chair legs is provided with a plug-in hole with a vertical opening facing upward and a non-circular cross-section. A plug tube with a cross-section corresponding to the non-circular plug-in hole is tightly assembled in the plug-in hole. The bottom of the plug tube is provided with an internal screw hole. A connecting rod is assembled in the plug tube. The bottom end of the connecting rod is provided with a screw section that is screwed into the internal screw hole in the bottom of the plug tube. An external screw rod is screwed inside the connecting rod and extends upward to a predetermined length from the top end of the connecting rod.

[0018] By fixing the connecting base to the bottom of the chair seat and screwing a plurality of chair legs on the connecting base, a novel and progressive effect of easily assembling the chair module legs is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance of an embodiment of the present invention.

[0020] Figure 2 for Figure 1 Front view of.

[0021] Figure 3 for Figure 2 Right side view.

[0022] Figure 4 for Figure 2 Top view of .

[0023] Figure 5 for Figure 2 Bottom view of .

[0024] Figure 6 Schematic diagram of the connection assembly of the base and the chair legs according to an embodiment of the present invention.

[0025] Figure 7 for Figure 4 Sectional view along the AA section line.

[0026] Figure 8 for Figure 4 Sectional view along the BB section line.

[0027] Figure 9 Schematic diagram of the chair leg connecting rod in an embodiment of the present invention.

[0028] Figure 10 This is a schematic diagram of the chair legs assembled with the connecting rod in an embodiment of the present invention.

[0029] Figure 11 for Figure 10 Top view of .

[0030] Figure 12 The present invention is a schematic diagram of a chair according to an embodiment of the present invention.

[0031] Figure 13 This is another schematic diagram of a chair according to an embodiment of the present invention.

[0032] Figure 14 This is another schematic diagram of a chair according to an embodiment of the present invention.

[0033] Description of symbols in the accompanying drawings:

[0034] 1. Seat; 2. Connecting base; 21. Front leg through-hole; 22. Rear leg through-hole;

[0035] 21A axis line; 21B horizontal line; 22A axis line; 22B horizontal line;

[0036] 23 through-hole for assembly; 24 through-hole for assembly; 3 chair legs; 30 plug-in hole;

[0037] 31 external screw; 32 plug tube; 321 internal threaded hole; 33 connecting rod;

[0038] 331 Threaded section. DETAILED DESCRIPTION

[0039] Please refer to the figure Figures 1 to 14 The embodiment of the modular leg structure of a chair of the present invention shown in the figure includes a seat 1, a connecting base 2 assembled on the bottom of the seat 1, a plurality of through-connecting holes provided on the connecting base 2 for pre-screwed connection of a plurality of chair legs 3, an outer screw 31 extending upward from the top of the chair leg 3 and penetrating and fixedly connected to the through-connecting hole of the connecting base 2, the main body of the connecting base 2 is provided with one or more through-assembly holes 23 and 24 for screwing and fixing to the bottom of the seat 1, the plurality of through-connecting holes including at least one front chair leg through-connecting hole 21 and at least one rear chair leg through-connecting hole 22.

[0040] like Figure 3As shown, the axis line 21A of the front chair leg passing through the connecting hole 21 provided on the connecting base 2 is not perpendicular to the horizontal line 21B of the ground plane, and the axis line 22A of the rear chair leg passing through the connecting hole 22 is not perpendicular to the horizontal line 22B of the ground plane; the inclination angle formed between the axis line 21A of the front chair leg passing through the connecting hole 21 provided on the connecting base 2 and the horizontal line 21A of the ground plane is the same as or different from the inclination angle formed between the axis line 22A of the rear chair leg passing through the connecting hole 22 and the horizontal line 22B of the ground plane.

[0041] like Figure 6 As shown, the upper end of each of the several chair legs 3 is provided with a plug hole 30 with a vertical opening facing upward and a non-circular cross section. A plug tube 32 with a cross section corresponding to the non-circular plug hole 30 is tightly assembled in the plug hole 30. The bottom of the plug tube 32 is provided with an internal screw hole 321. A connecting rod 33 is assembled in the plug tube 32. The bottom end of the connecting rod 33 is provided with a screw section 331 that is screwed into the internal screw hole 321 at the bottom of the plug tube 32. An external screw 31 is screwed inside the connecting rod 33 and extends upward to a predetermined length from the top end of the connecting rod 33.

[0042] Please refer to Figure 6 and Figures 12 to 14 As shown, the present invention includes a seat, a connecting base assembled and fixed to the bottom of the seat, and a plurality of modular chair legs that can be assembled at predetermined screw positions on the connecting base. By fixing the connecting base on the bottom of the seat and screwing the plurality of chair legs on the connecting base, a practical structure of modular chair legs is achieved.

[0043] Therefore, the present invention can indeed achieve the following advancements and novelties:

[0044] (1) It is indeed more innovative and progressive.

[0045] (2) It is indeed more innovative and effective to DIY assembly or update the modular stand structure, and the modular stand can be freely changed in different colors according to the decorative colors of different places of use and different visual requirements of the furnishings.

[0046] (3) The modular tripod structure is indeed more innovative and effective, and can achieve further industrial practicality and economic benefits with fewer components, easier assembly and replacement.

[0047] (4) Innovative production technologies that are truly more innovative and beneficial and have more economical and low transportation costs.

[0048] (5) When the chair legs are damaged, it is only necessary to replace the chair seat or the connecting base or any of the chair legs that need to be replaced, and the chair can be easily restored to its original state and continued to be used, thereby increasing its utilization value and service life.

[0049] (6) It is indeed more efficient and can effectively improve industrial utilization and economic benefits.

[0050] The above-described embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A modular footstool structure for a chair, characterized in that: The utility model comprises a chair seat, a connecting base assembled at the bottom of the chair seat, a plurality of through-connecting holes provided on the connecting base for screwing a plurality of chair legs, an outer screw extending upward from the top of the chair leg and penetrating and fixedly connected to the through-connecting hole of the connecting base, and a main body of the connecting base provided with one or more through-assembly holes for screwing and fixing to the bottom of the chair seat.

2. The modular foot frame structure of a chair according to claim 1, characterized in that: The plurality of through-connecting holes include at least one front chair leg through-connecting hole and at least one rear chair leg through-connecting hole.

3. The modular foot frame structure of a chair according to claim 2, characterized in that: The axis center line of the front chair leg passing through the connecting hole on the connecting base is a horizontal line that is not perpendicular to the ground plane, and the axis center line of the rear chair leg passing through the connecting hole is also a horizontal line that is not perpendicular to the ground plane.

4. The modular foot frame structure of a chair according to claim 3, characterized in that: The inclination angle formed between the axis line of the front chair leg passing through the connecting hole on the connecting base and the horizontal line of the ground plane is the same as or different from the inclination angle formed between the axis line of the rear chair leg passing through the connecting hole and the horizontal line of the ground plane.

5. The modular foot frame structure of a chair according to claim 1, characterized in that: The upper end of each chair leg is provided with a plug hole with a vertical opening facing upward and a non-circular cross section. A plug tube with a cross section corresponding to the non-circular plug hole is tightly assembled in the plug hole. The bottom of the plug tube is provided with an internal screw hole. A connecting rod is assembled in the plug tube. The bottom end of the connecting rod is provided with a screw section that is screwed into the internal screw hole in the bottom of the plug tube. An external screw is screwed inside the connecting rod and extends upward to a predetermined length from the top end of the connecting rod.

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