Lightweight high-bearing-capacity stainless steel tube for seat

Abstract

The utility model discloses a lightweight high bearing capacity stainless steel tube for a seat, which relates to the field of seat stainless steel tubes, and comprises an outer tube and an inner tube which are coaxially arranged, reinforcing ribs are respectively arranged in the outer tube and the inner tube, the reinforcing ribs comprise a spiral reinforcing rib, a strip-shaped reinforcing rib and an annular reinforcing rib, and the spiral reinforcing rib, the strip-shaped reinforcing rib and the annular reinforcing rib are arranged in the outer tube and the inner tube. The spiral reinforcing rib is fixedly connected between the inner wall of the outer pipe and the outer wall of the inner pipe, the annular reinforcing rib is fixedly connected to the inner wall of the inner pipe, and the strip-shaped reinforcing ribs are evenly distributed on the spiral reinforcing rib and the annular reinforcing rib. The spiral reinforcing ribs, the strip-shaped reinforcing ribs and the annular reinforcing ribs form a net-shaped supporting structure, and the inner pipe and the outer pipe which are made of high-strength thin-wall stainless steel materials are combined, so that the bearing capacity is improved while the lightweight design is realized, the overall weight of the seat can be reduced on the premise of ensuring the strength, and the service life of the seat is prolonged. And a user can feel more relaxed and comfortable in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seat stainless steel pipe, especially to a seat stainless steel pipe with light weight and high bearing capacity. BACKGROUND

[0002] The stainless steel pipe is often used to make the supporting structure of the seat because of corrosion resistance, high strength and beauty. In the seat design, the stainless steel pipe can be used as the seat frame, and various shapes can be shaped through bending, welding and other processes, and the stainless steel pipe is widely used in the fields of office chairs, medical chairs, automobile seats and public facilities.

[0003] The existing seat stainless steel pipe may pay too much attention to the strength and durability of the material in the design, and the light weight requirement is ignored. The steel pipe often adopts a thick pipe wall or an unoptimized structure design, which leads to a large overall weight. This not only increases the transportation and installation difficulty of the seat, but also may affect the portability and use comfort of the seat. If light weight design is performed, the bearing capacity is poor, and deformation or damage is prone to occur when a large external force is applied, thereby affecting the stability and safety of the seat. Light weight and high bearing capacity are often incompatible. SUMMARY

[0004] The utility model aims at solving the problems in the prior art and provides a seat stainless steel pipe with light weight and high bearing capacity.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A seat stainless steel pipe with light weight and high bearing capacity comprises a coaxial outer pipe and an inner pipe, a reinforcing rib for reinforcing the outer pipe and the inner pipe is arranged in the outer pipe, the reinforcing rib comprises a spiral reinforcing rib, a strip-shaped reinforcing rib and a ring-shaped reinforcing rib, the spiral reinforcing rib is fixedly connected between the inner wall of the outer pipe and the outer wall of the inner pipe, the ring-shaped reinforcing rib is fixedly connected to the inner wall of the inner pipe, and the strip-shaped reinforcing rib is provided with a plurality of reinforcing ribs and is uniformly distributed on the spiral reinforcing rib and the ring-shaped reinforcing rib.

[0007] Preferably, the spiral reinforcing rib is axially and spirally distributed between the inner pipe and the outer pipe, the cross section of the spiral reinforcing rib is trapezoidal, and the spiral angle is 30°-60°.

[0008] Preferably, the ring-shaped reinforcing rib is uniformly and interval distributed along the circumference of the inner pipe, and the interval between the adjacent ring-shaped reinforcing ribs is 50mm-100mm.

[0009] Preferably, the strip-shaped reinforcing rib is provided with a plurality of reinforcing ribs and is circumferentially arrayed, and the strip-shaped reinforcing rib forms a net-shaped support structure with the spiral reinforcing rib and the ring-shaped reinforcing rib.

[0010] Preferably, the outer tube and the inner tube are made of high-strength thin-walled stainless steel material, and the wall thickness of the outer tube and the inner tube is usually 0.8mm-1.5mm.

[0011] Preferably, the inner tube is provided with a honeycomb-shaped porous structure on the tube wall, which is realized by laser cutting or 3D printing technology.

[0012] Preferably, a carbon fiber composite material layer is wrapped on the outer wall of the outer tube, and the carbon fiber composite material layer is attached to the outer wall of the outer tube by a hot press forming process.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are that:

[0014] In the application, by integrating the mesh support structure of the spiral reinforcing rib, the strip-shaped reinforcing rib and the annular reinforcing rib, combining the inner tube and the outer tube made of high-strength thin-walled stainless steel material, the overall bending resistance, torsion resistance and compression resistance performance is significantly improved, the lightweight design is realized, the service life is prolonged, the stress concentration problem is avoided, and after combining the lightweight and high bearing capacity, the overall weight of the seat can be reduced under the premise of ensuring the strength, so that the user feels more relaxed and comfortable during use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of a lightweight high-bearing-capacity stainless steel pipe for a seat is provided for the utility model;

[0016] Figure 2 A partial sectional structure schematic view of a lightweight high-bearing-capacity stainless steel pipe for a seat is provided for the utility model;

[0017] Figure 3 A spiral reinforcing rib and strip-shaped reinforcing rib structure schematic view of a lightweight high-bearing-capacity stainless steel pipe for a seat is provided for the utility model;

[0018] Figure 4 A spiral reinforcing rib and strip-shaped reinforcing rib structure schematic view of a lightweight high-bearing-capacity stainless steel pipe for a seat is provided for the utility model.

[0019] Legend: 1, outer tube; 2, inner tube; 3, spiral reinforcing rib; 4, strip-shaped reinforcing rib; 5, annular reinforcing rib; 6, carbon fiber composite material layer. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model will be further described below in combination with the drawings and embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0021] Many particular details are set forth in the following description in order to provide a thorough understanding of the application. However, the application can be practiced according to other embodiments that depart from the details described herein. In other instances, detailed descriptions of well-known methods are not provided in order to avoid obscuring the application.

[0022] As shown in Figures 1-4 The utility model provides a kind of light weight high bearing capacity stainless steel pipe for seat, including coaxial setting outer tube 1 and inner tube 2, setting in outer tube 1 is used to strengthen the reinforcing rib of outer tube 1 and inner tube 2, reinforcing rib includes spiral reinforcing rib 3, strip reinforcing rib 4 and annular reinforcing rib (5), spiral reinforcing rib 3 is fixedly connected between the inner wall of outer tube 1 and the outer wall of inner tube 2, annular reinforcing rib 5 is fixedly connected on the inner wall of inner tube 2, strip reinforcing rib 4 is provided with several and evenly distributed on spiral reinforcing rib 3 and annular reinforcing rib 5.

[0023] In the embodiment, spiral reinforcing rib 3 is spirally distributed along the axial direction between inner tube 2 and outer tube 1, the cross section of spiral reinforcing rib 3 is trapezoidal and the spiral angle is 30 °-60 °, spiral reinforcing rib 3 provides uniform support force, significantly improves the torsional and bending strength of outer tube 1.

[0024] In the embodiment, annular reinforcing rib 5 is evenly spaced along the circumference of inner tube 2, the distance between adjacent annular reinforcing ribs 5 is 50mm-100mm, annular reinforcing rib 5 enhances the compression resistance of inner tube 2 and prevents local deformation.

[0025] In the embodiment, strip reinforcing rib 4 is provided with several and circumferentially arrayed, strip reinforcing rib 4 forms a mesh support structure with spiral reinforcing rib 3 and annular reinforcing rib 5 respectively, strip reinforcing rib 4 provides additional support in the circumferential direction of outer tube 1 and inner tube 2, enhances local strength, prevents local deformation of outer tube 1 and inner tube 2 under high load, strip reinforcing rib 4 cooperates with spiral reinforcing rib 3 and annular reinforcing rib 5 to form a mesh support structure, significantly improves the bending and torsional resistance of the steel pipe, evenly distributes stress, avoids stress concentration and prolongs the service life of outer tube 1 and inner tube 2.

[0026] In the embodiment, outer tube 1 and inner tube 2 are made of high-strength thin-walled stainless steel material, and the wall thickness of outer tube 1 and inner tube 2 is usually 0.8mm-1.5mm, the high-strength stainless steel can be 304 or 316 stainless steel, which significantly reduces the weight while ensuring the strength.

[0027] In the embodiment, the wall of inner tube 2 is provided with a honeycomb-shaped porous structure, which is realized by laser cutting or 3D printing technology, the honeycomb-shaped porous structure significantly reduces the weight of inner tube 2 while ensuring the strength of inner tube 2, and is suitable for occasions with extremely high light weight requirements.

[0028] In this embodiment, the outer wall of the outer tube 1 is wrapped with a carbon fiber composite material layer 6, which is attached to the outer wall of the outer tube 1 through a hot pressing forming process. The carbon fiber composite material layer 6 has the characteristics of high strength and low density, further enhancing the carrying capacity of the outer tube 1 and reducing the weight.

[0029] Method of using the device and working principle:

[0030] When the device is in use, high-strength thin-wall stainless steel material is selected as the raw material of the outer tube 1 and the inner tube 2, which significantly reduces the weight while ensuring strength. Between the inner wall of the outer tube 1 and the outer wall of the inner tube 2, a trapezoidal cross-section spiral reinforcing rib 3 is fixedly connected using a specific process (such as welding, riveting, etc.), and a ring-shaped reinforcing rib 5 is evenly distributed on the inner wall of the inner tube 2, also connected by welding or other fixing methods. The strip-shaped reinforcing rib 4 is evenly distributed and fixed on the spiral reinforcing rib 3 and the ring-shaped reinforcing rib 5, forming a net-like support structure.

[0031] The spiral reinforcing rib 3 provides uniform axial support force, significantly improving the torsional and bending strength of the outer tube 1. The ring-shaped reinforcing rib 5 enhances the compression resistance of the inner tube 2 to prevent local deformation. The strip-shaped reinforcing rib 4 works together with the spiral reinforcing rib 3 and the ring-shaped reinforcing rib 5 to form a net-like support structure, enhancing local strength and preventing local deformation of the outer tube 1 and the inner tube 2 under high load, while evenly distributing stress to avoid stress concentration. Combining light weight and high carrying capacity, the overall weight of the seat can be reduced under the premise of ensuring strength, making users feel more relaxed and comfortable during use.

[0032] The above is only a preferred embodiment of the present application, and is not intended to limit the application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments within the technical scope of the present application, in accordance with the technical essence of the present application, still belongs to the protection scope of the present application.

Claims

1. A light-weight high-load-bearing capacity stainless steel pipe for a seat, characterized by: The application relates to a reinforced pipe, which comprises a coaxially arranged outer pipe (1) and an inner pipe (2), a reinforcing rib arranged in the outer pipe (1) for reinforcing the outer pipe (1) and the inner pipe (2), the reinforcing rib comprising a spiral reinforcing rib (3), a strip-shaped reinforcing rib (4) and a ring-shaped reinforcing rib (5), the spiral reinforcing rib (3) being fixedly connected between the inner wall of the outer pipe (1) and the outer wall of the inner pipe (2), the ring-shaped reinforcing rib (5) being fixedly connected to the inner wall of the inner pipe (2), and the strip-shaped reinforcing rib (4) being arranged in a plurality of and uniformly distributed on the spiral reinforcing rib (3) and the ring-shaped reinforcing rib (5).

2. The light-weight high-load-bearing-capacity stainless steel tube for a seat according to claim 1, characterized by: The spiral reinforcing rib (3) is axially and spirally distributed between the inner pipe (2) and the outer pipe (1), the cross section of the spiral reinforcing rib (3) is trapezoidal, and the spiral angle is 30-60 degrees.

3. The light-weight high-load-bearing-capacity stainless steel tube for a seat according to claim 1, characterized by: The ring-shaped reinforcing rib (5) is uniformly and spacedly distributed along the circumference of the inner pipe (2), and the spacing between adjacent ring-shaped reinforcing ribs (5) is 50-100 mm.

4. The light-weight high-load-bearing-capacity stainless steel tube for a seat according to claim 1, characterized by: The strip-shaped reinforcing rib (4) is arranged in a plurality of and circumferentially arrayed, and the strip-shaped reinforcing rib (4) forms a net-shaped supporting structure with the spiral reinforcing rib (3) and the ring-shaped reinforcing rib (5) respectively.

5. The light-weight high-load-bearing-capacity stainless steel tube for a seat according to claim 1, characterized by: The outer pipe (1) and the inner pipe (2) are made of high-strength thin-wall stainless steel material, and the wall thickness of the outer pipe (1) and the inner pipe (2) is usually 0.8-1.5 mm.

6. The light-weight high-load-bearing-capacity stainless steel tube for a seat according to claim 1, characterized by: The pipe wall of the inner pipe (2) is provided with a honeycomb-shaped porous structure, which is realized by laser cutting or 3D printing technology.

7. The light-weight high-bearing-capacity stainless steel tube for a seat according to claim 1, characterized by: A carbon fiber composite material layer (6) is wrapped on the outer wall of the outer pipe (1), and the carbon fiber composite material layer (6) is attached to the outer wall of the outer pipe (1) through a hot-pressing forming process.

Images