Carbon fiber composite bar chair leg structure

Abstract

The utility model discloses a kind of carbon fiber composite material bar chair leg structures, including elastic support base, the elastic support base is composed of bottom support plate, top support plate and equidistance setting in the elastic support piece between support plate and top support plate, the elastic support base top is connected with carbon fiber lifting rod, the carbon fiber lifting rod includes carbon fiber support pipe, metal connecting piece fixed in carbon fiber support pipe end and lifting rod slidingly installed on the inner wall of carbon fiber support pipe.The utility model realizes the unity of light weight and high strength by carbon fiber composite material, endows product modern texture, unique elastic support base and arc support leg effectively absorb impact, slow vibration, significantly improve sitting posture comfort and stability, integrated ergonomic waist support seat cushion provides waist support, combined with brake universal wheel and flexible height adjustment function, jointly constitute a set of safe, convenient and comfortable complete solution.

Description

Technical Field

[0001] This utility model relates to the field of bar stool technology, and in particular to a bar stool leg structure made of carbon fiber composite material. Background Technology

[0002] Bar stools, as a type of high-legged seating, are widely used in bars, kitchens, commercial spaces, and modern homes. Traditional bar stool legs are mostly made of metal (such as steel or aluminum alloy) or solid wood. While metal legs are sturdy, they are heavy, inconvenient to move, and have a cold, hard style; solid wood legs, on the other hand, are prone to warping and cracking due to environmental humidity, and have limited strength.

[0003] Carbon fiber composites possess excellent properties such as high strength, high modulus, light weight, corrosion resistance, good fatigue resistance, and high design freedom, making them ideal materials for manufacturing furniture components. However, existing carbon fiber composite chair legs mostly adopt simple one-piece molding structures, which are insufficient in terms of structural stability, adjustability, and ease of connection with other components. Furthermore, a single component cannot meet the basic requirements for the number of parts for utility model patents.

[0004] Therefore, there is an urgent need to design a bar stool leg structure that can both leverage the advantages of carbon fiber materials and possess good functionality, assemblability, and sufficient innovation. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a carbon fiber composite bar chair leg structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A carbon fiber composite bar stool leg structure includes an elastic support base, which is composed of a bottom support plate, a top support plate, and elastic support members equidistantly disposed between the support plate and the top support plate.

[0008] The top of the elastic support base is connected to a carbon fiber lifting rod. The carbon fiber lifting rod includes a carbon fiber support tube, a metal connector fixed to the end of the carbon fiber support tube, and a lifting rod slidably installed on the inner wall of the carbon fiber support tube. A fastening knob is screwed onto the outer wall of the metal connector. A connecting plate is installed at the lower part of the carbon fiber support tube, and a seat cushion connecting plate is fixed at the top of the lifting rod. An ergonomic lumbar support seat cushion is fixedly connected to the top of the seat cushion connecting plate by bolts.

[0009] Preferably, the bottom of the bottom support plate is provided with equally spaced casters with brakes.

[0010] Preferably, the fastening knob penetrates the outer wall of the carbon fiber support tube, and the fastening knob forms a tight fit with the lifting rod.

[0011] Preferably, the elastic support includes an arc-shaped leg made of elastic material, a connecting piece is provided at the top of the arc-shaped leg, connecting holes are provided at the four corners of the connecting piece, and screw holes are provided at the bottom of the arc-shaped leg.

[0012] Preferably, the carbon fiber support tube is composed of an elastic tube layer and a carbon fiber composite layer, and the bottom support plate, the top support plate and the seat cushion connecting plate are all made of carbon fiber composite material.

[0013] Preferably, the lifting rod is made of stainless steel or aluminum alloy, and the surface of the lifting rod is provided with anti-slip texture.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Superior cushioning and shock absorption performance: Through the unique elastic support base at the bottom (composed of a bottom support plate, a top support plate, and elastic support components), this structure can effectively absorb and cushion the impact and vibration generated when the human body sits down, gets up, or shakes. This not only improves the comfort of use and reduces the fatigue of sitting for a long time, but also protects the user's lumbar spine, especially when combined with an ergonomic lumbar support cushion. It also reduces the impact noise of the chair legs to the ground and enhances the stability and durability of the overall structure.

[0016] 2. The perfect combination of lightweight and high strength: The core load-bearing components, such as carbon fiber support tubes, connecting plates, seat cushion connecting plates and support plates, are all made of carbon fiber composite materials. Carbon fiber materials have extremely high specific strength and specific modulus, which enables the chair legs to achieve a significant reduction in weight while ensuring sufficient structural strength and rigidity, making them easy to move and transport, while also giving the product a modern and high-tech aesthetic.

[0017] 3. Flexible and reliable height adjustment function: The adjustment method adopts the sliding cooperation of carbon fiber support tube and metal lifting rod. The structure is compact and easy to operate. Stepless lifting can be achieved by rotating the fastening knob, and it can be firmly locked. It can meet the needs of users of different heights and usage scenarios (such as bar counters of different heights), and has strong versatility.

[0018] 4. Enhanced structural stability and ease of movement: The bow-shaped support leg design in the elastic support provides excellent lateral stability and prevents the chair from swaying. The universal casters with brakes installed on the bottom support plate make the bar stool extremely flexible to move and can be fixed in place by the braking device, taking into account both flexibility and safety.

[0019] 5. Humanized and comfortable design: The ergonomic lumbar support cushion is directly integrated, providing users with good lumbar support and effectively improving sitting comfort. The entire system forms a complete comfort solution from foot cushioning and stable support of the chair legs to lumbar support. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a carbon fiber composite bar stool leg structure proposed in this utility model;

[0021] Figure 2 This is a side view of a bar stool with a carbon fiber composite bar stool leg structure proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of an elastic support structure for a carbon fiber composite bar chair leg structure proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the carbon fiber support tube of a carbon fiber composite bar stool leg structure proposed in this utility model.

[0024] In the diagram: 1. Bottom support plate; 2. Elastic support component; 3. Top support plate; 4. Casters with brakes; 5. Carbon fiber support tube; 6. Metal connector; 7. Lifting rod; 8. Seating cover; 9. Fastening knob; 10. Connecting plate; 11. Seat plate connecting plate; 12. Ergonomic lumbar support cushion; 13. Bow-shaped support leg; 14. Connecting piece; 15. Screw hole; 16. Elastic tube layer; 17. Carbon fiber composite layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1, referring to Figure 1-4 A carbon fiber composite bar stool leg structure mainly consists of three parts: an elastic support base, a carbon fiber lifting rod, and a seat cushion assembly.

[0027] The elastic support base is the foundation of the entire structure. Its bottom is a circular bottom support plate 1, which is made of carbon fiber composite material and is lightweight and strong. The lower surface of the bottom support plate 1 is evenly equipped with multiple casters 4, usually 4-5, with brakes, along the circumference to achieve flexible movement and positioning. The top of the base is a top support plate 3, which is also made of carbon fiber composite material. Multiple elastic support members 2 are evenly connected between the bottom support plate 1 and the top support plate 3 by bolts.

[0028] Specifically, each elastic support 2 includes an arched support leg 13, which provides good elastic deformation space. A connecting piece 14 is fixed to the top of the arched support leg 13, and the connecting hole on the connecting piece 14 is fixedly connected to the top support plate 3 by bolts. The lower part of the arched support leg 13 has a screw hole 15, which is fixedly connected to the bottom support plate 1 by bolts. The arched support leg 13 itself can be made of high elastic steel or high performance engineering plastic.

[0029] The carbon fiber lifting rod is upright and fixed in the center of the elastic support base. Its core is a carbon fiber support tube 5. The tube is composed of an inner elastic tube layer 16, such as polyurethane or other elastic polymer, and an outer carbon fiber composite layer 17. This ensures overall rigidity, while the inner elastic layer provides additional cushioning and noise reduction in minor areas. The lower end of the carbon fiber support tube 5 is fixedly connected to the center hole of the top support plate 3 of the elastic support base through a metal connector 6, such as a steel sleeve with a flange.

[0030] A lifting rod 7 is inserted into the inner cavity of the carbon fiber support tube 5 and can slide up and down along the inner wall. The lifting rod 7 is preferably an aluminum alloy tube or stainless steel tube with anti-slip texture on the surface to increase the friction with the locking mechanism and prevent slippage. A fastening knob 9 is screwed onto the upper tube wall of the carbon fiber support tube 5. When the lifting rod 7 is adjusted to a suitable height, the fastening knob 9 is tightened, and its end will press against the lifting rod 7, using friction to lock it firmly.

[0031] A connecting plate 10 is fixedly installed on the lower outer side of the carbon fiber support tube 5. This connecting plate can be used to connect the foot pedal or to provide auxiliary support. A seat connecting plate 11 is fixedly installed on the top of the lifting rod 7. This plate is also made of carbon fiber composite material.

[0032] The seat cushion assembly is directly fixed to the seat cushion connecting plate 11 by bolts. Its core is an ergonomic lumbar support seat cushion 12 that conforms to the curve of the human waist, providing users with a comfortable riding experience.

[0033] Working principle:

[0034] Buffering and shock absorption process: When the user sits down or the chair legs are vibrated, the impact force is transmitted to the elastic support base through the seat cushion connecting plate 11 and the carbon fiber lifting rod. The multiple elastic support members 2 and the bow-shaped support legs 13 of the base will undergo elastic deformation, like a set of parallel springs, effectively absorbing and dispersing the impact energy, transforming the direct rigid impact into a soft buffer, thereby achieving the effect of shock absorption and increasing comfort.

[0035] Height adjustment process: When the chair height needs to be adjusted, the user only needs to turn the fastening knob 9 counterclockwise to loosen it. At this time, the locking force on the lifting rod 7 is released, and the user can lift up or press down on the seat cushion to make the lifting rod 7 slide freely in the carbon fiber support tube 5. After reaching the ideal height, turn the fastening knob 9 clockwise to tighten it so that its end is tightly pressed against the lifting rod 7. The huge static friction force is used to fix the position of the lifting rod 7, thus completing the height adjustment.

[0036] Moving and securing process: When the chair needs to be moved, the casters 4 with brakes can turn and roll freely, allowing users to easily move the chair to any position. When it needs to be secured, simply step on the brake device on the casters to lock the wheels, preventing the chair from sliding and ensuring safe use.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A carbon fiber composite bar stool leg structure comprising a resilient support base, characterized by, The elastic support base consists of a bottom support plate (1), a top support plate (3), and elastic support members (2) that are equidistantly arranged between the support plate (1) and the top support plate (3); The top of the elastic support base is connected to a carbon fiber lifting rod. The carbon fiber lifting rod includes a carbon fiber support tube (5), a metal connector (6) fixed to the end of the carbon fiber support tube (5), and a lifting rod (7) slidably installed on the inner wall of the carbon fiber support tube (5). A fastening knob (9) is screwed onto the outer wall of the metal connector (6). A connecting plate (10) is installed at the lower part of the carbon fiber support tube (5), and a seat cushion connecting plate (11) is fixed at the top of the lifting rod (7). An ergonomic lumbar support seat cushion (12) is fixedly connected to the top of the seat cushion connecting plate (11) by bolts.

2. The carbon fiber composite bar chair leg structure according to claim 1, characterized by, The bottom of the bottom support plate (1) is provided with equally spaced universal wheels (4) with brakes.

3. The carbon fiber composite bar stool leg structure according to claim 1, characterized in that, The fastening knob (9) penetrates the outer wall of the carbon fiber support tube (5), and the fastening knob (9) and the lifting rod (7) form a fastening fit.

4. The carbon fiber composite bar stool leg structure according to claim 1, characterized in that, The elastic support (2) includes an arc-shaped support leg (13), which is made of elastic material. A connecting piece (14) is provided on the top of the arc-shaped support leg (13). Connecting holes are opened at the four corners of the connecting piece (14), and screw holes (15) are opened at the bottom of the arc-shaped support leg (13).

5. The carbon fiber composite bar stool leg structure according to claim 1, characterized in that, The carbon fiber support tube (5) is composed of an elastic tube layer (16) and a carbon fiber composite layer (17), and the bottom support plate (1), the top support plate (3) and the seat cushion connecting plate (11) are all made of carbon fiber composite material.

6. The carbon fiber composite bar stool leg structure according to claim 1, characterized in that, The lifting rod (7) is made of stainless steel or aluminum alloy, and the surface of the lifting rod (7) is provided with anti-slip texture.

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