Rod piece connecting structure

Abstract

A rod piece connecting structure is characterized in that at least two connecting rods are perpendicularly connected in at least one end of a hollow vertical pipe, an inner connecting piece fixedly connected with the inner circumference of the pipe is arranged in the pipe of the connecting end of the vertical pipe, a plurality of inserting openings are formed in the same height position between the inner connecting piece and the end portion of the connecting end in a pipe body of the vertical pipe, and a pipe cover is further arranged on the connecting end of the vertical pipe. The peripheral surface of the tube cover does not interfere with the extension rod; the ends of the connecting rods are inserted into the vertical pipe and located on the same plane height, the ends of the connecting rods are each provided with an avoiding section, the avoiding sections are located in the vertical pipe after the connecting rods are inserted into the inserting openings and arranged on the inner connecting pieces, and the avoiding sections in the pipe do not interfere with one another and are stacked in the axial direction. Through holes are formed in the pipe cover, the avoiding sections of the connecting rods and the inner connecting pieces in a penetrating mode respectively, coaxial screw holes are formed after the through holes are combined, and a screw penetrates through the first screw hole inwards from the pipe cover to be connected with the pipe cover, the connecting rods and the vertical pipe. The utility model has the advantages of simple and compact structure, stable connection relation and high safety.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, and more specifically to a rod connection structure. Background Art

[0002] In furniture, a rod connection structure with horizontal and vertical intersections is often used. For example, at least two support rods for horizontal support are connected to the circumferential surface of a vertical rod. The two support rods can be arranged in coaxial parallel, perpendicular corner or included angle settings. For example, in furniture such as beds, tables and chairs, guardrails, and storage racks, there may be a horizontal and vertical intersection rod connection structure of vertical rods / support rods. These rod structures often need to be connected at a certain angle or combined around to form a component of a complete piece of furniture.

[0003] Taking a bed as an example, a bed frame generally includes four groups of support columns. A bed beam rod is connected between two adjacent support columns, and two bed beam rods need to be vertically connected to the same support column in two directions. In the prior art, generally, connecting pieces that cooperate with each other are arranged on the outer side wall of the support column and the connection ends of the bed beam rods to achieve the connection. However, since the connecting pieces are exposed on the outer surface of the joints of each rod, it not only affects the appearance of the bed frame, but also may cause the risk of people accidentally being cut or bruised by the connecting pieces. In addition, the connecting pieces may become loose and the connection may become unstable due to excessive force caused by external factors (such as impact, load), resulting in potential safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rod connection structure, which can directly insert and lock at least two connecting rods on a vertical pipe, with balanced force, stable connection, safety, and a flat and beautiful appearance.

[0005] To achieve the above object, the solution of the utility model is:

[0006] A rod connection structure includes at least two connecting rods vertically connected to at least one end of a hollow vertical pipe;

[0007] One end of the vertical pipe where the connecting rod is connected is a connection end. An inner connection piece fixedly connected to the inner circumference of the pipe is arranged inside the connection end of the pipe. At the same height position between the inner connection piece and the end of the connection end of the pipe body of the vertical pipe, there are a plurality of insertion interfaces for the ends of each connecting rod to be inserted. A pipe cover is also arranged on the connection end of the vertical pipe. The pipe cover has a top surface that can be clamped on the end of the connection end and a circumferential surface inserted into the connection end. The circumferential surface of the pipe cover does not interfere with the connecting rod;

[0008] The ends of each connecting rod are inserted into the vertical pipe and are located on the same plane height. A section of avoidance section is respectively arranged in the ends of each connecting rod. After the connecting rod is inserted into the insertion interface, the avoidance section is located inside the vertical pipe and is placed on the inner connection piece. The avoidance sections inside the pipe do not interfere with each other and are stacked axially;

[0009] Through holes are respectively formed in the pipe cap, the avoidance sections of each connecting rod, and the inner connecting piece, and a coaxial screw hole is formed after combination. A screw passes through the first screw hole from the pipe cap inward to connect the pipe cap, the connecting rod, and the vertical pipe.

[0010] Furthermore, two connecting rods are connected to the vertical pipe. The avoidance section is formed by recessing at least one yielding notch in the part of the end of the connecting rod inserted into the pipe. The avoidance sections of the two connecting rods overlap and are mutually complementary after being inserted into the insertion interface, so that the connecting rods are located at the same height position.

[0011] Furthermore, the connecting rod is a hollow pipe, and the end of the connecting rod forms a solid section. The avoidance section is formed by cutting a yielding notch along the length direction of the connecting rod in the part of the end of the connecting rod inserted into the pipe.

[0012] Furthermore, the end of the connecting rod is filled with a filling block at the end where the connecting rod is connected to the vertical pipe.

[0013] Furthermore, an avoidance opening is formed in the circumferential surface of the pipe cap at the position corresponding to the insertion interface.

[0014] Furthermore, there is an included angle between adjacent connecting rods, and the included angle between the two connecting rods is 90 degrees or 180 degrees.

[0015] Furthermore, the shape and size of the inner connecting piece correspond to the inner circumferential cross-section of the vertical pipe, and connecting claws are also arranged at intervals in the circumferential direction of the inner connecting piece and are fixedly connected to the inner circumference of the vertical pipe.

[0016] Furthermore, the cross-sections of the vertical pipe and the connecting rod are respectively circular.

[0017] Furthermore, the shape and size of the insertion interface both correspond to and match the cross-sectional area of the connecting rod. The top surface of the pipe cap corresponds to the cross-sectional shape of the vertical pipe, the top surface closes the end of the vertical pipe, and the circumferential surface of the pipe cap extends downward from the inner side of the top surface periphery.

[0018] After adopting the above scheme, in the rod connection structure of the present utility model, the connecting pipe is inserted into the vertical pipe and then locked in from the end of the vertical pipe by a screw. Since the end of the connecting rod inserted into the vertical pipe does not interfere with each other and supports each other inside the vertical pipe, and there is an inner connecting piece in the vertical pipe that can evenly conduct the force, hereby, the rod connection structure of the present utility model is simple and compact, the connection relationship is stable, the safety is high, and the connection part is arranged inside the vertical pipe and does not protrude on the surface of the pipe / rod, which can not only avoid being bruised or cut by people during use, but also be safer and more flat and beautiful in appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is an exploded structural schematic diagram of the present utility model;

[0021] Figure 3 This is a three-dimensional structure diagram of the present utility model after omitting the riser pipe and the pipe cap;

[0022] Figure 4 This is a schematic longitudinal sectional view of the present utility model;

[0023] Figure 5 This is a schematic longitudinal sectional view of the present utility model.

[0024] Explanation of the reference numerals in the attached drawings: 1 riser pipe; 11 insertion opening; 2 pipe cap; 21 avoidance opening; 3 inner connecting piece; 31 connecting claw; 4 connecting rod; 41 avoidance section; 411 filling block; 5 screw hole; 6 screw. Specific implementation mode

[0025] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0026] The present utility model discloses a rod connection structure, which includes at least two connecting rods 4 vertically connected to at least one end of a hollow riser pipe 1. Refer to Figures 1 to 5 As shown, this embodiment is the most basic structure of the present utility model, including two connecting rods 4 connected to one end of a hollow riser pipe 1, used to illustrate the connection structure between the hollow riser pipe 1 and each connecting rod 4.

[0027] The connecting rod 4 is vertically connected to the riser pipe 1, and there is an included angle between adjacent connecting rods 4. In this embodiment, the included angle between the two connecting rods 4 is 90 degrees, forming a corner connection on the riser pipe 1. The included angle between adjacent connecting rods can also be other angles or 180 degrees. When it is 180 degrees, the two connecting rods are respectively vertically connected to both sides of the riser pipe 1 and are on the same horizontal line.

[0028] Define the end of the riser pipe 1 connected with the connecting rod 4 as the connection end, and the end of the connecting rod 4 connected to the riser pipe 1 as the end. An inner connecting piece 3 fixedly connected to the inner circumference of the pipe is provided in the pipe of the connection end of the riser pipe 1, for example, the inner connecting piece 3 is welded in the pipe. At the same time, a plurality of insertion openings 11 for inserting the ends of each connecting rod 4 are provided at the same height position between the inner connecting piece 3 and the end of the connection end of the riser pipe 1 on the pipe body of the riser pipe 1. A pipe cap 2 is also provided on the connection end of the riser pipe 1. The pipe cap 2 has a top surface that can be clamped on the end of the connection end and a peripheral surface inserted into the connection end. The peripheral surface of the pipe cap does not interfere with the connecting rod 4. Among them, the shape and size of the insertion opening 11 correspond to the cross-sectional area of the connecting rod 4, the top surface of the pipe cap 2 corresponds to the cross-sectional shape of the riser pipe 1, the top surface closes the end of the riser pipe 1, and the peripheral surface of the pipe cap 2 extends downward from the inner side of the peripheral edge of the top surface. In this embodiment, the riser pipe 1 is a cylindrical pipe, the pipe cap 2 is circular, the shape and size of the inner connecting piece 3 correspond to the inner peripheral cross-section of the riser pipe 1, and it is also circular in this embodiment. Connecting claws 31 are also provided at intervals around the inner connecting piece 3 for fixed connection with the inner circumference of the riser pipe 1. Thereby, the inner connecting piece 3 of the riser pipe 1 can conduct the force more evenly and play a role in stably supporting the connecting rod 4.

[0029] When the ends of the connecting rods 4 are inserted into the riser 1, they can be located at the same plane height. Each end of the connecting rod 4 is respectively provided with a relief section 41. After the connecting rod 4 is inserted into the insertion port 11, the relief section 41 is located inside the riser and placed on the inner connecting piece 3. The relief sections 41 inside the riser 1 do not interfere with each other and are stacked axially, and are supported together after being stacked inside the pipe, so that the connecting rod 4 can be located at the same height position relative to the riser 1.

[0030] Furthermore, through holes are respectively formed in the pipe cap 2, the relief sections 41 of the connecting rods 4, and the inner connecting piece 3, and after being combined, they form a coaxial screw hole 5. The inner threads can be provided in the relief section 41 located below and the through hole of the inner connecting piece 3. A screw 6 passes through the first screw hole 5 from the pipe cap 2 inward to connect the pipe cap 2, the connecting rod 4, and the riser 1, so that the connecting rod 4 can be simultaneously connected to the riser 1.

[0031] In this embodiment, two connecting rods 4 are connected to the riser 1. The relief section 41 can be formed by concavely providing at least one relief notch in the part of the end of the connecting rod 4 inserted into the pipe. After the relief sections 41 of the two connecting rods 4 are inserted into the insertion port 11, they overlap each other and form mutual complementary fitting, so that the connecting rods 4 are located at the same height position. The relief section 41 can be formed by cutting at least a relief notch along the length direction of the connecting rod 4 and perpendicular to the end face of the connecting rod 4 in the part of the end of the connecting rod 4 inserted into the pipe. The part of one end of the connecting rod outside the relief notch can be intersected with the relief notch part of the other end of the connecting rod and then overlapped together to avoid interference.

[0032] Specifically, in this embodiment, the cross-sections of the riser 1 and the connecting rod 4 are both circular. The forming method of the relief section 41 of each connecting rod 4 can be: cutting off half of the volume of the connecting rod 4 along the length direction of the connecting rod 4 from the end face perpendicular to the end of the connecting rod 4, that is, the cross-section of the connecting rod 4 on the relief section 41 is semi-circular. After the two connecting rods 4 are inserted into the insertion port 11, the cutting surfaces along the length direction of the two relief sections 41 are opposite and fit up and down. The two relief sections 41 located inside the riser 1 can overlap each other and form mutual complementary fitting. Of course, the connecting rod 4 can also be a square rod, an elliptical rod, etc., and the relief section 41 can also be formed by other methods (such as milling corresponding relief notches on the ends of each connecting rod 4, etc.).

[0033] The connecting rod 4 in this embodiment is a hollow pipe. In order to make the cutting surfaces that fit up and down in the ends of the two connecting rods 4 stable enough, all the cutting surfaces of the relief section 41 part of the connecting rod 4 are closed into a closed plane. Specifically, in this embodiment, the end of the connecting rod 4 is filled with a filling block 411 at the end where the connecting rod 4 is connected to the riser 1, and the end of the connecting rod 4 together with the relief section 41 is a solid section. The filling block 411 can be filled in the end of the connecting rod 4 by means of welding, interference fit, etc.

[0034] In this embodiment, an avoidance opening 21 is formed on the circumferential surface of the pipe cap 2 at a position corresponding to the insertion opening 11, so that the end of the connecting rod 4 and the avoidance section 41 can enter the vertical pipe 1 after passing through the insertion opening 11 and the avoidance opening 21.

[0035] Combined Figure 1 with Figure 4 As shown, after adopting the above structure, when the two connecting rods 4 are connected to the vertical pipe 1, since the connecting part between the connecting rod 4 and the vertical pipe 1 is inside the vertical pipe 1, the end of the connecting rod inserted into the vertical pipe does not interfere with each other and supports each other inside the vertical pipe, and the structure is compact; and the connecting part is placed inside the vertical pipe 1 instead of being arranged outside the whole structure, so that the user will not touch the connecting part during actual use, which not only avoids the influence of external force on the stability of the connection, but also avoids the user being injured by hitting. The pipe cap 2, the vertical pipe 1 and the two connecting rods 4 in this embodiment are locked by screwing the screw 6 through the pipe cap 2 to the lower part of the inner connecting piece 3. The inner connecting piece 3 of the vertical pipe 1 can conduct the force evenly. Therefore, the connection relationship between the components of this embodiment is stable, with high safety and more flat and beautiful appearance.

[0036] This embodiment is only the most basic structural unit of the present utility model. The number of connecting rods 4 can be increased according to the actual use situation, or it can be spliced based on this embodiment as the basic structural unit. For example, multiple connecting rods 4 are connected to a vertical pipe 1, and corresponding insertion openings 11 are provided. More parts of the avoidance sections 41 of each connecting rod 4 can be cut off so that each connecting rod 4 is located on the same horizontal plane after connection. Or the connecting rod 4 is connected by using the connection method of the present utility model at both ends of a vertical pipe 1. The rod connection structure of the present utility model can be installed on different furniture after assembly and splicing, especially in places where corners are needed, such as the corners of a bed frame, a table frame, etc.

[0037] The above is only one embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A rod connection structure, characterized in that: At least two connecting rods are vertically connected at at least one end of a hollow riser pipe; One end of the riser pipe where the connecting rods are connected is the connection end. An internal connecting piece fixedly connected to the inner circumference of the pipe is provided inside the connection end of the pipe. At the same height position between the internal connecting piece and the end of the connection end of the riser pipe body, a plurality of insertion openings for the ends of the respective connecting rods to be inserted are provided. A pipe cap is further provided on the connection end of the riser pipe. The pipe cap has a top surface that can be clamped on the end of the connection end and a peripheral surface inserted into the connection end. The peripheral surface of the pipe cap does not interfere with the connecting rods; The ends of the respective connecting rods are inserted into the riser pipe and are located on the same plane height. A section of avoidance section is respectively provided in the ends of the respective connecting rods. After the connecting rods are inserted into the insertion openings, the avoidance sections are located inside the riser pipe and placed on the internal connecting piece. The avoidance sections inside the pipe do not interfere with each other and are stacked axially; Through holes are respectively penetrated in the pipe cap, in the avoidance sections of the respective connecting rods, and in the internal connecting piece, and after being combined, they form a coaxial screw hole. A screw passes through the first screw hole from the pipe cap inward to connect the pipe cap, the connecting rods, and the riser pipe.

2. The rod connection structure according to claim 1, characterized in that: Two connecting rods are connected to the riser pipe. The avoidance section is formed by recessing at least one retreat notch in the part of the end of the connecting rod inserted into the pipe. The avoidance sections of the two connecting rods overlap and are mutually complementary after being inserted into the insertion openings, so that the connecting rods are located at the same height position.

3. The rod connection structure according to claim 2, characterized in that: The connecting rod is a hollow pipe, and the end of the connecting rod forms a solid section. The avoidance section is formed by cutting a retreat notch along the length direction of the connecting rod in the part of the end of the connecting rod inserted into the pipe.

4. A rod connection structure according to claim 3, characterized in that: The end of the connecting rod is filled with a filling block inside the end where the connecting rod is connected to the riser pipe.

5. A rod connection structure according to claim 1 or 2, characterized in that: The peripheral surface of the pipe cap is provided with an avoidance opening corresponding to the position of the insertion opening.

6. A rod connection structure according to any one of claims 2 to 4, characterized in that: There is an included angle between adjacent connecting rods, and the included angle between the two connecting rods is 90 degrees or 180 degrees.

7. A rod connection structure according to claim 1, characterized in that: The shape and size of the internal connecting piece correspond to the inner peripheral cross-section of the riser pipe. Connecting claws are also provided at intervals around the circumference of the internal connecting piece and are fixedly connected to the inner circumference of the riser pipe.

8. A rod connection structure according to claim 1, characterized in that: The cross-sections of the riser pipe and the connecting rod are respectively circular.

9. A rod connection structure according to claim 1, characterized in that: The shape and size of the insertion opening correspond to and match the cross-sectional area of the connecting rod. The top surface of the pipe cap corresponds to the cross-sectional shape of the riser pipe. The top surface closes the end of the riser pipe, and the peripheral surface of the pipe cap extends downward from the inner side of the peripheral edge of the top surface.

Images