Pipe fitting connecting structure
By setting up an inner connecting piece and screw connection between the vertical pipe and the horizontal pipe, the unstable and safety hazards of horizontal and vertical cross pipe fittings connections in furniture are solved, and a stable, safe and beautiful pipe fitting connection structure is achieved.
Patent Information
- Application Number
- CN202422183847.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-06
AI Technical Summary
The connecting parts of the rod/pipe frame structure that crosses horizontally and vertically in existing furniture are complex in structure, which affects the appearance and poses safety risks. The connection is unstable and may lead to cuts or impacts.
An inner connecting piece and screw connection structure is adopted between the vertical pipe and the horizontal pipe. The vertical pipe and the horizontal pipe are connected by screws to ensure uniform conduction of the force, avoid external protrusions, and achieve stable connection.
It achieves the stability and safety of pipe fitting connections, has a flat and beautiful appearance, avoids the risk of cuts and impacts, and has a simple structure.
Smart Images
Figure CN223120361U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of furniture, and more specifically to a pipe connection structure. Background Art
[0002] In furniture, a frame structure with horizontal and vertical cross - bar / pipe members is often used. For example, in furniture such as beds, chairs, guardrails, and storage racks, there may be a connection structure of horizontal and vertical cross - bar / pipe members.
[0003] Taking a bed as an example, a bed is a kind of furniture used to provide a sleeping environment. According to people's needs, beds are also divided into different types according to their uses and have different functions. Among them, the upper berth of a bunk bed, a children's bed, etc. need to have safety features and protective functions. Generally, guardrails are installed on the outer side or the entire circumference of these types of beds to prevent people sleeping on the bed from rolling off the bed and getting injured when they are asleep.
[0004] For easy transportation, existing guardrails are generally installed on the bed frame in a detachable manner. The guardrail is composed of a frame structure connected by horizontal and vertical cross - pipes. The guardrail is not only detachable from the bed frame, but the guardrail itself can also be detachable. To achieve the detachable structure of the guardrail, existing guardrails generally have the following disadvantages: Connectors need to be set at the joints of each pipe to cooperate for connection, the structure is complex, and the connectors are exposed on the outer surface of the joints of each pipe, which not only affects the appearance of the bed frame, but also may cause the risk of people being accidentally cut or bruised by the connectors. The connectors may also become loose or the connection may become unstable due to external factors (such as impact, load), etc., resulting in potential safety hazards.
[0005] The above problems also exist in other frame structures with horizontal and vertical cross - bar / pipe members. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a pipe connection structure, which has balanced stress, stable connection, safety, and a more flat and beautiful appearance.
[0007] To achieve the above - mentioned purpose, the solution of the utility model is as follows:
[0008] A pipe connection structure includes a first horizontal pipe vertically connected to at least one end of a vertical pipe. One side of the vertical pipe is a connection side, and the opposite side of the connection side is a locking side. A first inner connection piece fixedly connected to the inner circumference of the pipe is provided inside the pipe at the end where the first horizontal pipe is connected to the vertical pipe.
[0009] One end of a vertical pipe is inserted with an end cap in the end connected to the first cross bar. A connection groove for inserting the end of the first cross pipe is also provided at the near end of the connection side of the vertical pipe. The end cap includes a top surface clamped on the end and a peripheral surface inserted into the first cross bar. An avoidance groove for inserting the end of the first cross pipe is provided at the position behind the connection groove on the peripheral surface of the end cap. The end of the first cross pipe sequentially passes through the connection groove and the avoidance groove into the vertical pipe. Through holes are respectively penetrated in the locking side of the vertical pipe, the peripheral surface of the end cap at the position behind the locking side, and the inner connection piece of the first cross pipe to form a coaxial first screw hole. A first screw passes through the first screw hole from the locking side of the vertical pipe inward to connect the vertical pipe, the end cap and the first cross pipe.
[0010] Further, at least one second cross pipe is also connected in the vertical pipe. The second cross pipe is vertically connected to the connection side of the vertical pipe and is parallel and located below the second cross pipe. A second inner connection piece fixedly connected to the inner circumference of the pipe is provided inside one end of the second cross pipe connected to the vertical pipe. Through holes are respectively penetrated in the locking side of the vertical pipe, the connection side of the vertical pipe, and the second inner connection piece of the second cross pipe to form a coaxial second screw hole. A second screw passes through the second screw hole from the locking side of the vertical pipe inward to connect the vertical pipe and the second cross pipe.
[0011] Further, the cross sections of the vertical pipe, the first cross pipe, and the second cross pipe are all oval, rounded rectangular, or racetrack-shaped.
[0012] Further, one end of the second cross pipe connected to the vertical pipe is closely attached to the vertical pipe through a fitting. The side of the fitting close to the vertical pipe forms a tight-fitting ring that fits the outer wall of the vertical pipe. The rear end of the tight-fitting ring is inwardly recessed to form a step that can be inserted into and tightly fit the inner wall of the second cross pipe. The step is located outside the second inner connection piece. A through hole for the second screw to pass through is formed in the middle of the fitting.
[0013] Further, the end of the second cross pipe connected to the vertical pipe forms a shape that can closely fit the outer wall of the connection side of the vertical pipe.
[0014] Further, the first cross pipe and the second cross pipe are both vertically connected between two vertical pipes.
[0015] Further, the first inner connection piece and the second inner connection piece are integrally formed inside the first cross pipe and the second cross pipe respectively.
[0016] Further, the shape of the connection groove corresponds to the cross-sectional shape of the first cross pipe. The top surface of the end cap corresponds to the cross-sectional shape of the vertical pipe. The top surface closes the end of the vertical pipe. The peripheral surface of the end cap extends downward from the inner side of the peripheral edge of the top surface. The peripheral surface is inserted into the vertical pipe from the end of the vertical pipe.
[0017] Further, one end of the vertical pipe is connected to a first cross pipe, and at least one second cross pipe is connected to the middle section of the vertical pipe.
[0018] Further, one first cross pipe is respectively connected to both ends of the vertical pipe, and at least one second cross pipe is connected to the middle section of the vertical pipe.
[0019] After adopting the above - mentioned scheme, for the pipe fitting connection structure of the present utility model, when the vertical pipe is vertically connected to the first horizontal pipe and the second horizontal pipe, the vertical pipe is screwed to the first and second inner connection pieces of the first and second horizontal pipes through screws. When the pipe fitting connection structure is stressed, the stress is evenly conducted on the first horizontal pipe and the second horizontal pipe through the first and second inner connection pieces, making the connection relationship stable; the first and second inner connection pieces are placed inside the first horizontal pipe and the second horizontal pipe, and there is no obvious convex structure on the outer surface of the pipe fitting, so that the user will not be cut or bruised during the use process, which is safer and the appearance is more flat and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a three - dimensional structure diagram of the present utility model;
[0021] Figure 2 is Figure 1 a sectional view of
[0022] Figure 3 is an exploded view of the present utility model;
[0023] Figure 4 is Figure 3 a sectional view of
[0024] Explanation of the reference numerals in the drawings: 1 vertical pipe; 11 connection groove; 12 end cap; 121 top surface; 122 circumferential surface; 1221 relief groove; 2 first horizontal pipe; 3 second horizontal pipe; 41 first inner connection piece; 42 second inner connection piece; 5 fitting piece; 51 tight - fitting ring; 52 step; 6 first screw hole; 7 second screw hole; 81 first screw; 82 second screw; A connection side; B locking side. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.
[0027] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0028] Combined with Figures 1 to 4 As shown, the utility model discloses a pipe fitting connection structure, which includes vertically connecting a first cross pipe 2 at least at one end of a vertical pipe 1. Refer to Figure 1 In the shown embodiment, a first cross pipe 2 is connected at only one end of the vertical pipe 1. Further, at least one second cross pipe 3 can also be vertically connected in the vertical pipe 1. Figure 1 In the shown embodiment, a second cross pipe 3 is also connected in the vertical pipe 1 and is located below the first cross pipe 3. Figure 1 The shown embodiment is the most basic structure, used to illustrate the connection structures between the vertical pipe 1 and the first cross pipe 2 and the second cross pipe 3 respectively.
[0029] Define one side of the vertical pipe 1 as the connection side A, and the opposite side of the connection side in the vertical pipe 1 as the locking side B. One end of the first cross pipe 2 is vertically connected to the connection side of the end of the vertical pipe 1, and a first inner connection piece 41 fixedly connected to the inner circumference of the pipe is provided inside the pipe at the end where the first cross pipe 2 is connected to the vertical pipe 1. Let an end cap 12 be inserted into the end of the vertical pipe 1 where the first cross bar 2 is connected, and a connection groove 11 for inserting the end of the first cross pipe 2 is also opened at the near end of the connection side A of the vertical pipe 1. The end cap 12 can include a top surface 121 clamped on the end and a peripheral surface 122 inserted into the first cross bar. An avoidance groove 1221 for inserting the end of the first cross pipe 2 is opened at the position of the peripheral surface 122 of the end cap behind the connection groove. The end of the first cross pipe 2 sequentially passes through the connection groove 11 and the avoidance groove 1221 into the vertical pipe 1. Through holes are respectively penetrated in the locking side B of the vertical pipe 2, at the position of the peripheral surface 122 of the end cap behind the locking side B, and in the inner connection piece 41 of the first cross pipe 2 to form a coaxial first screw hole 6. Let a first screw 81 pass through the first screw hole 6 from the locking side B of the vertical pipe inward to connect the vertical pipe 1, the end cap 12, and the first cross pipe 2.
[0030] Further, at least one second cross pipe 3 can also be connected in the middle of the vertical pipe 1. The second cross pipe 3 is vertically connected to the connection side A of the vertical pipe and is parallel and located below the second cross pipe 2. A second inner connection piece 42 fixedly connected to the inner circumference of the pipe is provided inside the pipe at the end where the second cross pipe 3 is connected to the vertical pipe 1. Through holes are respectively penetrated in the locking side B of the vertical pipe 1, the connection side A of the vertical pipe 1, and the second inner connection piece 42 of the second cross pipe to form a coaxial second screw hole 7. A second screw 82 passes through the second screw hole 7 from the locking side B of the vertical pipe inward to connect the vertical pipe 1 and the second cross pipe 3.
[0031] In this embodiment, a connection groove 11 and an end cap 12 are provided at the upper end of the vertical pipe 1 for connecting a first horizontal pipe 2. The shape of the connection groove 11 corresponds to the cross-sectional shape of the first horizontal pipe 2 and is opened on the connection side A. The peripheral surface 122 of the end cap extends downward from the inner side of the periphery of the top surface 121, and the top surface 121 of the end cap 12 corresponds to the cross-sectional shape of the vertical pipe 1. In this embodiment, the cross-sections of the vertical pipe 1, the first horizontal pipe 2, and the second horizontal pipe 3 are all elliptical, forming a flat and round pipe fitting. It can also be formed with a cross-section of a rounded rectangle or a runway shape, etc. The first inner connecting piece 41 and the second inner connecting piece 42 can be integrally formed in the first horizontal pipe 2 and the second horizontal pipe 3 respectively.
[0032] In this embodiment, when the first horizontal pipe 2 is connected to the vertical pipe 1, the first screw 81 sequentially passes vertically through the locking side B at the upper end of the vertical pipe 1, the peripheral surface 122 of the end cap 12, the relief groove 1221, the connection groove 11, and finally passes through the first inner connecting piece 41 of the first horizontal pipe 2, and the nut abuts against the outer wall of the locking side B of the vertical pipe 1. Since the first inner connecting piece 41 is circumferentially arranged on the inner circumference of the first horizontal pipe 2 and is fixedly connected to the inner circumference of the pipe, when the first horizontal pipe 2 is stressed, the first screw 81, the end of the first horizontal pipe 2 inserted into the vertical pipe 1, the first inner connecting piece 41, and the body of the first horizontal pipe 2 disperse the force together, making the connection relationship between the first horizontal pipe 2 and the vertical pipe 1 relatively stable.
[0033] Similarly, when the second horizontal pipe 3 is connected to the vertical pipe 1, the second screw 82 sequentially passes vertically through the locking side B in the middle section of the vertical pipe 1, the inside of the vertical pipe 1, and finally penetrates into the second inner connecting piece 42 of the second horizontal pipe 3, and the nut abuts against the outer wall of the locking side B of the vertical pipe 1. Since the second inner connecting piece 42 is circumferentially arranged on the inner circumference of the second horizontal pipe 3 and is fixedly connected to the inner circumference of the pipe, when the second horizontal pipe 3 is stressed, the second screw 82, the second inner connecting piece 42, and the body of the second horizontal pipe 3 disperse the force together, making the connection relationship between the second horizontal pipe 3 and the vertical pipe 1 relatively stable.
[0034] Furthermore, one end of the second horizontal pipe 3 connected to the vertical pipe 1 can be in close fit with the vertical pipe 1. In this embodiment, one end of the second horizontal pipe 3 connected to the vertical pipe 1 is in close fit with the vertical pipe 1 through a fitting 5. The fitting 5 can be a thin sheet. A tight-fitting ring 51 that fits the outer wall of the vertical pipe 1 can be formed on the side of the fitting 5 close to the vertical pipe 1. The rear end of the tight-fitting ring 51 is inwardly retracted to form a step 52 that can be inserted into and closely fit the inner wall of the second horizontal pipe 3. The step 52 is located outside the second inner connecting piece 41. The fitting 5 in this embodiment forms an elliptical hollow sheet body. The fitting can be made of plastic, rubber, or silicone material, etc. A through hole for the second screw 82 to pass through is formed in the middle of the fitting 5 for the second screw 82 to pass through.
[0035] In other embodiments, the fitting member 5 may not be provided, and the end of the second horizontal pipe 3 connected to the connecting vertical pipe 1 is formed into a shape that can be closely attached to the outer wall of the connecting side of the vertical pipe 1.
[0036] The connection between the first horizontal pipe 2, the second horizontal pipe 3 and the vertical pipe 1 of the present utility model is tight and the transition is natural, and it has a visual effect similar to integral molding on the appearance. During actual use, no additional external connectors need to be provided, and there is no obvious protruding structure on the outer surface of the pipe fitting connection structure, so that users will not be cut or bruised during the use process. The structure is simple and has safety.
[0037] This embodiment is only the most basic structural unit of the present utility model. The number of vertical pipes 1, first horizontal pipes 2, and second horizontal pipes 3 can be increased according to actual use conditions, or they can be spliced based on this embodiment as the basic structural unit. For example:
[0038] Optionally, both the first horizontal pipe 2 and the second horizontal pipe 3 are vertically connected between two vertical pipes 1.
[0039] Optionally, one end of the vertical pipe 1 is connected with a first horizontal pipe 2, and at least one second horizontal pipe 3 is connected to the middle section of the vertical pipe 1.
[0040] Optionally, both ends of the vertical pipe 1 are respectively connected with a first horizontal pipe 2, and at least one second horizontal pipe 3 is connected to the middle section of the vertical pipe 1.
[0041] After the vertical pipe 1, the first horizontal pipe 2, and the second horizontal pipe 3 are combined according to actual needs in the present utility model, the present utility model can be used as structures such as a bedside guardrail, a chair back, a storage rack, a railing, etc. For example: when both the first horizontal pipe 2 and the second horizontal pipe 3 are vertically connected between two vertical pipes 1, and the lower end of the vertical pipe 1 is connected to the bed frame, the pipe fitting connection structure composed of the vertical pipe 1, the first horizontal pipe 2, and the second horizontal pipe 3 can be used as a bedside guardrail; when both the first horizontal pipe 2 and the second horizontal pipe 3 are vertically connected between two vertical pipes 1, and the lower end of the vertical pipe 1 is connected to the chair frame, the pipe fitting connection structure composed of the vertical pipe 1, the first horizontal pipe 2, and the second horizontal pipe 3 can be used as a chair back; when both the first horizontal pipe 2 and the second horizontal pipe 3 are vertically connected between two vertical pipes 1, and both the upper end and the lower end of the vertical pipe 1 are connected with the first horizontal pipe 2, and at least one second horizontal pipe 3 is provided in the middle section of the vertical pipe 1, the pipe fitting connection structure composed of the vertical pipe 1, the first horizontal pipe 2, and the second horizontal pipe 3 can be used as a storage rack or a clothes hanger.
[0042] 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 within the protection scope of the present utility model.
Claims
1. A pipe fitting connection structure, characterized in that, A first horizontal pipe is vertically connected to at least one end of a vertical pipe. One side of the vertical pipe is the connection side, and the opposite side of the connection side is the locking side. A first inner connecting piece fixedly connected to the inner periphery of the pipe is provided inside the pipe at the end of the vertical pipe where the first horizontal pipe is connected. An end cap is inserted into the end of the vertical pipe where the first cross bar is connected. A connection groove for inserting the end of the first horizontal pipe is also opened at the near end of the connection side of the vertical pipe. The end cap includes a top surface that is clamped on the end and a peripheral surface that is inserted into the first cross bar. An avoidance groove for inserting the end of the first horizontal pipe is opened at the position behind the connection groove on the peripheral surface of the end cap. The end of the first horizontal pipe sequentially passes through the connection groove, the avoidance groove into the vertical pipe. Through holes are respectively penetrated in the locking side of the vertical pipe, the peripheral surface of the end cap at the position behind the locking side, and the inner connecting piece of the first horizontal pipe to form a coaxial first screw hole. A first screw passes through the first screw hole from the locking side of the vertical pipe inward to connect the vertical pipe, the end cap and the first horizontal pipe.
2. The pipe fitting connection structure according to claim 1, characterized in that: At least one second horizontal pipe is also connected in the vertical pipe. The second horizontal pipe is vertically connected to the connection side of the vertical pipe and is parallel and located below the first horizontal pipe. A second inner connecting piece fixedly connected to the inner periphery of the pipe is provided inside the pipe at the end of the vertical pipe where the second horizontal pipe is connected. Through holes are respectively penetrated in the locking side of the vertical pipe, the connection side of the vertical pipe, and the second inner connecting piece of the second horizontal pipe to form a coaxial second screw hole. A second screw passes through the second screw hole from the locking side of the vertical pipe inward to connect the vertical pipe and the second horizontal pipe.
3. A pipe fitting connection structure according to claim 2, characterized in that: The cross-sections of the vertical pipe, the first horizontal pipe, and the second horizontal pipe are all elliptical, rounded rectangular or racetrack-shaped.
4. A pipe fitting connection structure according to claim 2 or 3, characterized in that: One end of the second horizontal pipe connected to the vertical pipe is closely attached to the vertical pipe through a fitting. The side of the fitting close to the vertical pipe forms a tight-fitting ring that fits the outer wall of the vertical pipe. The back end of the tight-fitting ring is inwardly recessed to form a step that can be inserted into and closely fitted with the inner wall of the second horizontal pipe. The step is located outside the second inner connecting piece. A through hole for the second screw to pass through is formed in the middle of the fitting.
5. A pipe fitting connection structure according to claim 2 or 3, characterized in that: The end of the second horizontal pipe connected to the vertical pipe forms a shape that can be closely attached to the outer wall of the connection side of the vertical pipe.
6. A pipe fitting connection structure according to claim 1, characterized in that: Both the first horizontal pipe and the second horizontal pipe are vertically connected between two vertical pipes.
7. A pipe fitting connection structure according to claim 2, characterized in that: The first inner connecting piece and the second inner connecting piece are integrally formed inside the first horizontal pipe and the second horizontal pipe respectively.
8. A pipe fitting connection structure according to claim 1, characterized in that: The shape of the connection groove corresponds to the cross-sectional shape of the first horizontal pipe. The top surface of the end cap corresponds to the cross-sectional shape of the vertical pipe. The top surface closes the end of the vertical pipe. The peripheral surface of the end cap extends downward from the inner side of the peripheral edge of the top surface. The peripheral surface is inserted into the vertical pipe from the end of the vertical pipe.
9. A pipe fitting connection structure according to claim 1 or 6, characterized in that: One end of the vertical pipe is connected to a first horizontal pipe, and at least one second horizontal pipe is connected to the middle section of the vertical pipe.
10. A pipe fitting connection structure according to claim 1 or 6, characterized in that: One first horizontal pipe is respectively connected to both ends of the vertical pipe, and at least one second horizontal pipe is connected to the middle section of the vertical pipe.