Edge-covering foot stool of office chair

Abstract

The utility model provides an office chair edge covering foot stool, which relates to the technical field of office chairs and comprises a bottom frame body, the bottom frame body is formed by arranging a plurality of supporting rods in an annular radiation shape, each supporting rod comprises an upper cover and a lower cover, and the width of one end of each supporting rod facing the center is larger than that of one end of each supporting rod far away from the center. The distance between one end, facing the center, of the upper cover and the ground is larger than the end away from the center. And a surface cover plate covers the upper part of the bottom frame body. The utility model has the beneficial effects that the bottom frame body is formed by arranging the plurality of support rods in the annular radiation shape, the support rods are wrapped to form the hollow box body shape with the closed bottom, and the surface cover plate is arranged on the support rods by adopting a riveting process, so that compared with the design that the lower parts of the support rods are opened, the surface cover plate is more convenient to mount and demount; the full-wrapping type supporting rod is better in stress, exquisite in structure, three-dimensional in shape and better in safety performance, and hands of people are not prone to being scratched when people carry the supporting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an edge-wrapped footrest for office chairs. Background Art

[0002] Office chairs are essential tools in office places. To facilitate communication among people during work, office chairs are usually rotatable and movable. To ensure the stability of office chairs, the bases of office chairs are generally disk-shaped and diffused, and are composed of multiple support rods distributed radially outward. This provides the best support for office chairs. However, most of the support rods at the bases of office chairs on the market at present are not fully enclosed, and there are openings at the bottoms of the support rods. This makes the openings at the bottoms of the support rods relatively sharp, and people are easily scratched when carrying office chairs. Moreover, the supporting force of the semi-enclosed support rods is also affected.

[0003] The technical content disclosed in the Chinese patent document (Publication No.: CN116076882A, Patent Name: Quick-assembly Chair Base) is as follows: The first component is a leg portion including a truncated part of one of five legs. The second component includes: a hub portion having a central support member with a tapered axial hole therein; a plurality of full-length fixed legs extending radially outward from the central hub; and a short leg receiver configured and arranged to receive the leg component when assembling the chair base. The central hole of the central support member is tapered and formed to receive and retain a pneumatic lift assembly, which serves as a seat column to support the seating part of the chair.

[0004] From the above embodiments, it can be seen that the base (i.e., the footrest in the traditional sense) has a plurality of full-length fixed legs extending radially outward from the central hub, providing a strong support for the chair. However, the bottoms of the full-length fixed legs are not closed, that is, the bottom surfaces of the full-length fixed legs are open. And currently, such bases are all made of metal materials. With such an open structure, the edges of the openings are often relatively sharp, and it is very inconvenient for workers to be easily cut during assembly. Content of the Utility Model

[0005] The utility model overcomes the shortcomings in the prior art. The bottom frame body is composed of a plurality of support rods arranged in a ring-shaped and radially radiating shape. The support rods are enclosed to form a hollow box body with a closed bottom. Compared with the design of the lower part of the support rod with an opening, this fully enclosed support rod has better force-bearing performance, and it is not easy to scratch people's hands when people carry it, and the safety performance is better.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] An edge-wrapped footrest for an office chair, comprising a bottom frame body. The bottom frame body has a central mounting position, and a fixing cylinder is provided at the central mounting position. The bottom frame body is composed of a plurality of support rods arranged in a ring-shaped and radially extending manner outward with the fixing cylinder as the center. The support rods are enclosed to form a hollow box body with a closed bottom. The width of the support rods gradually decreases from the end close to the fixing cylinder to the end far from the fixing cylinder.

[0008] Furthermore, the support rods are in a T shape, and a riveting position is formed by recessing on the side of the support rods.

[0009] Furthermore, it further includes a surface cover plate. The shape of the surface cover plate matches the shape of the upper surface of the support rods and the number is in one-to-one correspondence. The surface cover plate is covered on the support rods. The surface cover plate includes an enclosing edge and a riveting edge that extend downward on both sides and are connected in sequence. The riveting edge is fixedly attached to the riveting position.

[0010] Furthermore, a protruding cavity is formed by protruding downward on the bottom surface of the end of the support rod far from the fixing cylinder. A caster connecting cylinder is inserted into the bottom protruding cavity. An installation hole is provided in the protruding cavity, and the caster connecting cylinder is inserted into the installation hole. The caster connecting cylinder includes a cylinder body and an outer extension edge located at the bottom of the cylinder body. The cylinder body is vertically arranged, and the outer diameter of the outer extension edge is larger than the aperture of the installation hole.

[0011] Furthermore, the support rod includes an upper cover surface. An opening is formed at the end of the upper cover surface far from the fixing cylinder, and the opening communicates with the inside of the protruding cavity.

[0012] Furthermore, an arc edge that matches the side surface shape of the fixing cylinder is formed on the side of the surface cover plate close to the fixing cylinder.

[0013] Furthermore, the number of the support rods is five, and the five support rods are arranged at equal intervals.

[0014] Furthermore, the center of the cylinder body is located on the circumference with the center of the fixing cylinder as the center of the circle and the line connecting the center of the cylinder body and the center of the fixing cylinder as the diameter.

[0015] Furthermore, the ratio of the width of the end of the support rod far from the fixing cylinder to the width of the end close to the fixing cylinder is 0.7 - 0.8:1.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The bottom frame body of the present utility model is composed of a plurality of support rods arranged in a ring-shaped and radially extending manner. The support rods are enclosed to form a hollow box body with a closed bottom. Compared with the design with an open bottom of the support rods, this fully enclosed support rod has better stress, and it is not easy to scratch people's hands when people carry it, and the safety performance is better. Description of the Drawings

[0018] The accompanying drawings are used to provide a further understanding of the utility model, and together with the embodiments of the utility model, are used to explain the utility model, and do not constitute a limitation to the utility model. In the accompanying drawings:

[0019] Figure 1 is the three-dimensional view of the edge-wrapped footrest of the office chair according to the embodiment of the present utility model Figure 1 viewed from the upper angle;

[0020] Figure 2 is the three-dimensional view of the edge-wrapped footrest of the office chair according to the embodiment of the present utility model Figure 2 viewed from the lower angle;

[0021] Figure 3 is the exploded view of the edge-wrapped footrest of the office chair according to the embodiment of the present utility model Figure 1 ;

[0022] Figure 4 is the exploded view of the edge-wrapped footrest of the office chair according to the embodiment of the present utility model Figure 2 wherein the dotted line indicates the welding line of the support rod;

[0023] Figure 5 is the three-dimensional view of the surface cover plate according to the embodiment of the present utility model, viewed from the lower angle;

[0024] Figure 6 is the schematic view of the separated state of the support rod and the surface cover plate according to the embodiment of the present utility model Figure 1 ;

[0025] Figure 7 is the schematic view of the separated state of the support rod and the surface cover plate according to the embodiment of the present utility model Figure 2 .

[0026] In the figure: 1, support rod; 101, riveting position; 102, protruding cavity; 1021, mounting hole; 103, upper cover; 1031, opening; 2, fixed cylinder; 3, surface cover plate; 301, surrounding edge; 302, riveting edge; 303, arc edge; 4, caster connecting cylinder; 401, cylinder body; 402, outer extension edge. Detailed implementation manners

[0027] The following describes the preferred embodiments of the utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model and are not used to limit the utility model.

[0028] As Figures 1 to 7As shown in the figure, an edge-wrapped footrest for an office chair includes a bottom frame body. The bottom frame body has a central mounting position, and a fixing cylinder 2 is provided at the central mounting position. The main components of an office chair include a footrest, a gas lift, a seat, a backrest, and armrests, etc. The edge-wrapped footrest of this design is an improvement on the existing footrest. In this embodiment, the fixing cylinder 2 is used for installing and fixing the gas lift of the office chair. The bottom frame body is composed of several support rods 1 arranged in a ring-shaped and radially extending outward with the fixing cylinder 2 as the center. Among them, it can be seen from Figure 4 that the support rods 1 are enclosed to form a hollow box shape with a closed bottom. The manufacturing method of each support rod 1 is integrally formed by stamping with a stamping device. The side lines at both ends after stamping are located at the Figure 4 dotted line positions in the figure. At this time, welding can be used for welding. Therefore, from this structure, it can be seen that the outer surface of the support rod 1 formed by stamping is closed and relatively smooth, without the structure with sharp edges as in the traditional ones. Therefore, workers are not easily scratched when assembling and taking it.

[0029] And it can be seen from Figure 1 that the width of the support rod 1 gradually decreases from the end close to the fixing cylinder 2 to the end far from the fixing cylinder 2. Since the center of gravity supported by the bottom frame body is located at the fixing cylinder 2 (the center of the bottom frame body), the width of the support rod 1 close to the fixing cylinder 2 will be relatively wider to improve the support strength. The support rod 1 gradually extends outward and the width gradually decreases, which not only saves materials but also gives the overall structure a certain streamline and aesthetic feeling. In addition, the ratio of the width of the end of the support rod 1 far from the fixing cylinder 2 to the width of the end close to the fixing cylinder 2 is 0.7 - 0.8:1. In this embodiment, the ratio of the width of the end of the support rod 1 far from the fixing cylinder 2 to the width of the end close to the fixing cylinder 2 is set to 0.8:1. Therefore, the applicant found in actual research that this ratio can achieve the purpose of saving materials and ensure the load-bearing strength of the support rod 1.

[0030] The support rod 1 is in a T shape, mainly referring to that the cross-section of the support rod 1 is in a T shape. This can be seen in Figure 4It can also be intuitively seen that the upper ends of both sides of the T shape protrude outwards, and the middle part is relatively narrowed. A riveting slot 101 is formed by a depression on the side of the support rod 1. It also includes a face cover plate 3. The shape of the face cover plate 3 matches the shape of the upper surface of the support rod 1, and the quantity corresponds one by one. The face cover plate 3 is covered on the support rod 1. The support rod 1 includes an upper cover 103. As described above, the welding line of the support rod 1 is located on the upper cover 103. Therefore, when the face cover plate 3 is covered on the support rod 1, it plays a role of covering and beautifying. The face cover plate 3 includes an enclosing edge 301 and a riveting edge 302 that extend downward on both sides and are connected in sequence. After the face cover plate 3 is covered on the support rod 1, the enclosing edge 301 is on both sides of the side wall at the upper end of the support rod 1, and the riveting edge 302 is folded inward to be fixedly attached to the riveting slot 101. In fact, during actual processing, the face cover plate 3 is in a sheet shape, placed on the support rod 1, and the two sides of the face cover plate 3 are directly attached and clamped to the two sides of the support rod 1 by riveting, so that the two sides of the face cover plate 3 form the enclosing edge 301 and the riveting edge 302, and finally the face cover plate 3 is covered and fixed on the support rod 1.

[0031] A protrusion cavity 102 is formed by the bottom surface of the support rod 1 protruding downward at the end far from the fixed cylinder 2. A caster connecting cylinder 4 is inserted into the bottom protrusion cavity 102. The caster is inserted and fixed upward in the caster connecting cylinder 4. The protrusion cavity 102 is provided with a mounting hole 1021, and the caster connecting cylinder 4 is inserted into the mounting hole 1021. Among them, the caster connecting cylinder 4 includes a cylinder body 401 and an outer extension edge 402 located at the bottom of the cylinder body 401. The diameter of the cylinder body 401 matches the aperture of the mounting hole 1021. During assembly, the cylinder body 401 is directly inserted and installed into the mounting hole 1021, and the outer extension edge 402 plays a role of limiting. The outer diameter of the outer extension edge 402 is larger than the aperture of the mounting hole 1021 to prevent the cylinder body 401 from being inserted excessively. After insertion, the caster connecting cylinder 4 can be fixed at the protrusion cavity 102 by welding.

[0032] The cylinder body 401 is vertically arranged, which helps the connecting rod of the caster to be vertically inserted and installed in the cylinder body 401 without lateral deviation, affecting the subsequent support stability.

[0033] The support rod 1 includes an upper cover 103. An opening 1031 is formed at one end of the upper cover 103 far from the fixed cylinder 2, and the opening 1031 is communicated with the inside of the protrusion cavity 102. Since the connecting rod of the caster is usually made into a screw, after the connecting rod of the caster is inserted into the cylinder body 401 from bottom to top, a nut is screwed onto the connecting rod to fix the caster on the caster connecting cylinder 4. The setting of the opening 1031 is convenient for a person to reach into the inside of the protrusion cavity 102 to tighten the nut, that is, the setting of the opening 1031 is convenient for the installation of the caster. After the caster is installed, when the face cover plate 3 is covered on the support rod 1, the face cover plate 3 will cover the opening 1031 and not expose it.

[0034] On one side of the face cover plate 3 close to the fixed cylinder 2, there is an arc edge 303 formed to match the shape of the side surface of the fixed cylinder 2, so as to match the side contour of the fixed cylinder 2, without affecting the installation of the pneumatic rod on the fixed cylinder 2 and also improving the compactness of the face cover plate 3 after the support rod 1 is assembled.

[0035] In this embodiment, the number of the support rods 1 is five, and the five support rods 1 are arranged at equal intervals, with good overall support stability.

[0036] The center of the cylinder body 401 is located on the circumference with the center of the fixed cylinder 2 as the center of the circle and the line connecting the center of the cylinder body 401 and the center of the fixed cylinder 2 as the diameter. That is, the length specifications of each support rod 1 are the same, making the overall structure symmetrical. And since the cylinder body 401 is for installing casters, and the casters are the support points of the entire footrest, that is, after the product is assembled, the distance between each caster and the fixed cylinder 2 is the same, so the support is good and the force is stable.

[0037] Finally, it should be noted that the above are only the preferred embodiments of the utility model and are not used to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An edge-wrapped footrest for an office chair, characterized in that, It includes a chassis body which has a central mounting position where a fixed cylinder (2) is provided; the chassis body is composed of a number of support rods (1) arranged in a ring-shaped and radially extending outward pattern with the fixed cylinder (2) as the center; the support rods (1) are formed into a hollow box shape with a closed bottom by enclosing. The width of the support rod (1) gradually decreases from the end close to the fixed cylinder (2) to the end far from the fixed cylinder (2).

2. The edge-wrapped footrest of the office chair according to claim 1, wherein The support rod (1) is in a T shape, and a riveting position (101) is formed by recessing on the side of the support rod (1).

3. The edge-wrapped footrest of the office chair according to claim 2, wherein It further includes a face cover plate (3). The shape of the face cover plate (3) matches the upper surface shape of the support rod (1) and the quantity is in one-to-one correspondence. The face cover plate (3) is covered on the support rod (1); the face cover plate (3) includes an enclosing edge (301) and a riveting edge (302) that extend downward on both sides and are connected in sequence. The riveting edge (302) is fixedly attached to the riveting position (101).

4. The edge-wrapped footrest of the office chair according to claim 3, characterized in that, A protruding cavity (102) is formed by protruding downward on the bottom surface of the end of the support rod (1) far from the fixed cylinder (2); a caster connecting cylinder (4) is inserted into the protruding cavity (102); an installation hole (1021) is provided in the protruding cavity (102), and the caster connecting cylinder (4) is inserted into the installation hole (1021); the caster connecting cylinder (4) includes a cylinder body (401) and an outer extension edge (402) located at the bottom of the cylinder body (401). The cylinder body (401) is vertically arranged, and the outer diameter of the outer extension edge (402) is larger than the aperture of the installation hole (1021).

5. The edge-wrapped footrest of the office chair according to claim 4, wherein The support rod (1) includes an upper cover surface (103). An opening (1031) is formed at the end of the upper cover surface (103) far from the fixed cylinder (2), and the opening (1031) communicates with the inside of the protruding cavity (102).

6. The edge-wrapped footrest of the office chair according to claim 3, characterized in that, An arc edge (303) matching the side surface shape of the fixed cylinder (2) is formed on the side of the face cover plate (3) close to the fixed cylinder (2).

7. The edge-wrapped footrest of the office chair according to claim 1, characterized in that, The number of the support rods (1) is five, and the five support rods (1) are arranged at equal intervals.

8. The edge-wrapped footrest of the office chair according to claim 4, characterized in that, The center of the cylinder body (401) is located on the circumference with the center of the fixed cylinder (2) as the center of the circle and the line connecting the center of the cylinder body (401) and the center of the fixed cylinder (2) as the diameter.

9. The edge-wrapped footrest of the office chair according to claim 1, characterized in that, The ratio of the width of the end of the support rod (1) far from the fixed cylinder (2) to the width of the end close to the fixed cylinder (2) is 0.7 - 0.8:1.

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