Detachable vertical connecting structure of stainless steel rectangular pipe

Abstract

The utility model discloses a detachable vertical connecting structure for stainless steel rectangular pipes, and belongs to the technical field of furniture structure connection. The structure comprises stainless steel rectangular pipes, L-shaped corner connectors, child-mother counter-locking screw inner hexagon head screws and crosshead nuts, notches are cut in the stainless steel rectangular pipes, and the L-shaped corner connectors are fastened through penetrating holes of the child-mother counter-locking screws so that the vertical stainless steel rectangular pipes can be connected with one another. The utility model provides a connection mode of the stainless steel rectangular pipe, which has the advantages of no need of welding, low manufacturing cost, reduced operation intensity, convenience in installation and debugging in a narrow space, and reutilization of the stainless steel rectangular pipe after disassembly, thereby improving the utilization rate of the stainless steel rectangular pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture structure connection, in particular to a detachable vertical connection structure of stainless steel rectangular tubes. Background Art

[0002] A stainless steel rectangular tube is a seamless hollow long steel bar, which is mainly widely used in structural components such as furniture, chemical industry, medical treatment, food, light industry, machinery, etc. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in manufacturing furniture parts and engineering structures.

[0003] In furniture use, stainless steel rectangular tubes are often used as support structures. In order to prevent them from deforming under high pressure, various different connection methods of stainless steel rectangular tubes have evolved. Since multiple groups of stainless steel rectangular tubes need to be connected to each other, multiple stainless steel rectangular tubes are often welded to each other to form a longer stainless steel rectangular tube. Existing stainless steel rectangular tubes are usually connected to each other by welding multiple groups of pipes. The welding method makes the installation and disassembly of stainless steel rectangular tubes relatively difficult. The disassembled stainless steel rectangular tubes will be damaged and cannot be reused, resulting in a low utilization rate. Therefore, a new type of notch connection method is proposed for the above problems. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the prior art and solve the above problems, the utility model adopts the following solutions: the end or middle part of the stainless steel rectangular tube is cut out with corresponding end concave notches or middle concave notches by a laser cutting machine, and the two notch parts are connected by clamping.

[0005] Furthermore, two L-shaped angle brackets are used to clamp two stainless steel rectangular tubes connected by clamping. The hole distances between the through holes at the concave notch and the bottom through holes are adapted to the hole distance of the L-shaped angle brackets (the diameters of all three are adapted to the sizes of the mother and son lock screws), and the through hole positions are aligned.

[0006] Furthermore, a mother and son lock screw cross head nut is inserted into the through hole at the clamping connection, and an inner hexagon wrench and a cross screwdriver are used in cooperation to fasten and connect the inner hexagon head screw of the mother and son lock screw.

[0007] Furthermore, the remaining mother and son lock screws are used to connect the remaining through hole positions and fasten them.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0009] The utility model relates to a detachable vertical connection structure for stainless steel rectangular pipes. By setting structures such as a middle concave notch, an end concave notch, an L-shaped angle code, an internal hexagonal head screw for a mother-child pair-lock screw, and a cross-head nut for a mother-child pair-lock screw, this set of structures enables multiple stainless steel rectangular pipes to be quickly connected in the vertical direction without the use of welding. During disassembly, it can also be quickly disassembled using an internal hexagonal wrench and a cross-head screwdriver, facilitating installation and debugging in narrow spaces, reducing the operation intensity, improving the work efficiency of installers during operation, and enabling the seamless steel pipes after disassembly to be reused. At the same time, it is convenient for packaging and transportation, reducing its transportation loss and increasing its utilization rate to save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0011] Figure 1 Schematic diagram of the installation of the L-shaped connection method for stainless steel rectangular pipes.

[0012] Figure 2 Schematic diagram of the installation of the T-shaped connection method for stainless steel rectangular pipes.

[0013] Figure 3 Schematic diagram of the installation of the cross-shaped connection method for stainless steel rectangular pipes.

[0014] Figure 4 Schematic diagram of a table with a stainless steel rectangular pipe as a support structure and its concave notch.

[0015] MAIN SYMBOL DESCRIPTION:

[0016] 1. Stainless steel rectangular pipe; 2. End notch; 3. Middle notch; 4. L-shaped angle code; 5. Cross-head nut for mother-child pair-lock screw; 6. Internal hexagonal head screw for mother-child pair-lock screw. DETAILED IMPLEMENTATION MANNER

[0017] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail in combination with the embodiments and the drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. The technical solutions of the present utility model will be described in detail below in combination with the embodiments and the drawings, but the protection scope is not limited by this.

[0018] See Figure 1As shown in the figure, it is an L-shaped connection method of a detachable vertical connection structure for stainless steel rectangular tubes. After the stainless steel rectangular tubes are connected through the end slots and the end slot clamping positions, two L-shaped angle codes (which can be selected to be used or not according to the actual situation) are used to clamp the two steel tubes on both sides. The hole distance between the through holes at the concave slot and the bottom through holes is adapted to the hole distance of the L-shaped angle code (the diameters of all three are adapted to the size of the mother-daughter pair lock screws). The cross-head nuts of the mother-daughter pair lock screws are placed according to the corresponding hole positions (the hole diameters are adapted to the size of the mother-daughter pair lock screws), and then the inner hexagon wrench and the cross screwdriver are used in combination to tighten the inner hexagon head screws of the mother-daughter pair lock screws, so as to realize the L-shaped connection method of the two vertical steel tubes.

[0019] See Figure 2 As shown in the figure, it is a T-shaped connection method of a detachable vertical connection structure for stainless steel rectangular tubes. After the stainless steel rectangular tubes are connected through the end slots and the middle slots and the clamping positions, two L-shaped angle codes (which can be selected to be used or not according to the actual situation) are used to clamp the two steel tubes in the axisymmetric direction on both sides. The hole distance between the through holes at the concave slot and the bottom through holes is adapted to the hole distance of the L-shaped angle code (the diameters of all three are adapted to the size of the mother-daughter pair lock screws). The cross-head nuts of the mother-daughter pair lock screws are placed according to the corresponding hole positions, and then the inner hexagon wrench and the cross screwdriver are used in combination to tighten the inner hexagon head screws of the mother-daughter pair lock screws, so as to realize the T-shaped connection method of the two vertical steel tubes.

[0020] See Figure 3 As shown in the figure, it is a cross-shaped connection method of a detachable vertical connection structure for stainless steel rectangular tubes. After the stainless steel rectangular tubes are connected through the middle slots and the middle slot clamping positions, two L-shaped angle codes (which can be selected to be used or not according to the actual situation) are used to clamp the two steel tubes in the centrosymmetric direction on both sides. The hole distance between the through holes at the concave slot and the bottom through holes is adapted to the hole distance of the L-shaped angle code (the diameters of all three are adapted to the size of the mother-daughter pair lock screws). The cross-head nuts of the mother-daughter pair lock screws are placed according to the corresponding hole positions, and then the inner hexagon wrench and the cross screwdriver are used in combination to tighten the inner hexagon head screws of the mother-daughter pair lock screws, so as to realize the cross-shaped connection method of the two vertical steel tubes.

[0021] See Figure 4As shown in the figure, it is a table with a stainless-steel rectangular tube as the support structure. The stainless-steel rectangular tubes perpendicular to each other are all connected in the vertical card slot mode in the present invention. The two stainless-steel rectangular tubes in the enlarged part are in a vertical T-shaped connection structure. The cross-sectional dimension of the stainless-steel rectangular tube is 15x15mm, the radius of the rounded corners at the four corners is 1mm, the wall thickness of the steel pipe is 0.6mm, and the dimensions of the end slot and the middle slot are as shown in the figure. Among them, the dimension A of the end slot and the middle slot should be greater than or equal to 1mm (the radius dimension of the rounded corners at the four corners of the steel pipe); the dimension B should be equal to 7.5mm (half of the side length dimension of the steel pipe cross-section); the dimension C should be greater than 15mm (the side length dimension of the steel pipe cross-section); the dimension D should be greater than 0.6mm (the wall thickness dimension of the steel pipe). After meeting the above conditions, adjust the radius dimension R of the rounded corners and the cutting allowance according to the actual situation so that the stainless-steel rectangular tubes can be connected by clamping.

[0022] The present invention can enable multiple stainless-steel rectangular tubes to be perpendicularly connected to each other without welding, requires a small operating space, is convenient for installation and disassembly, the disassembled stainless-steel rectangular tubes will not be damaged, and can be reused, improving the utilization rate of the stainless-steel rectangular tubes. During the use of furniture, when the pipe connection part of the stainless-steel rectangular tube is under great pressure due to being in a high-pressure environment, one side wall of the pipe connection part will be squeezed. The card slot connection mode can distribute the received pressure to the two steel pipes. If an L-shaped angle code is used for connection, the pressure will also be transmitted to the non-card slot connection part, thereby reducing the pressure received by the connection part, enhancing the anti-stamping ability of the stainless-steel rectangular tube, and preventing the connection part from being damaged.

[0023] The above-mentioned implementation manner is only the preferred implementation manner of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the protection scope required by the present invention.

Claims

1. A detachable vertical connection structure of stainless steel rectangular tubes, characterized in that: It includes a stainless steel rectangular tube, an L-shaped angle code, a hexagon socket head screw and a cross head nut. A concave notch is cut out of the stainless steel rectangular tube, which is divided into an end notch and a middle notch according to the position of the notch. The mutually perpendicular stainless steel rectangular tubes are connected through the notch clamping, and are fixed with the parent-child locking screws and the angle code, so that the mutually perpendicular stainless steel rectangular tubes can be connected in an L-shape, a T-shape or a cross-shape.

2. A detachable vertical connection structure of stainless steel rectangular tubes as claimed in claim 1, characterized in that: A through hole is opened at the concave notch at the end or middle of the stainless steel rectangular tube, and the hole diameter thereof is adapted to the size of the parent-child locking screw.

3. A detachable vertical connection structure of stainless steel rectangular tubes as claimed in claim 1, characterized in that: A through hole is opened at a certain distance from the through hole at the concave notch at the end or middle of the stainless steel rectangular tube, and another through hole is opened at the bottom. The hole diameter is adapted to the size of the parent-child locking screw, and the hole spacing is adapted to the hole spacing of the L-shaped angle code.

4. A detachable vertical connection structure of stainless steel rectangular tubes as claimed in claim 1, characterized in that: The diameter of the through hole at the concave notch of the stainless steel rectangular tube, the diameter of the through hole at the bottom, and the diameter of the L-shaped corner code are all adapted to the size of the parent-child locking screws.

5. The detachable vertical connection structure of stainless steel rectangular tubes as claimed in claim 1, characterized in that: After two mutually perpendicular stainless steel rectangular tubes are connected by means of the concave notches thereon, L-shaped corner brackets are connected on both sides, and the stainless steel rectangular tubes and the L-shaped corner brackets are fixed by means of parent-child locking screws.

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