Combined flat tube assembly

Abstract

The utility model discloses a combined flat pipe assembly, which comprises two flat pipe sections, a reduced diameter section is formed at one end of one flat pipe section, the reduced diameter section is detachably inserted into the pipe opening of the other flat pipe section, a bendable adapter is provided, one end of the adapter is installed in the reduced diameter section, the other end of the adapter extends into the other flat pipe section, a tie spring is arranged in the other flat pipe section, the tie spring is tied to the other end of the adapter and the other flat pipe section, after the reduced diameter section is separated from the pipe opening of the other flat pipe section, the other end of the adapter is left in the pipe opening of the other flat pipe section, and the adapter is bent to fold the combined flat pipe assembly. The utility model solves the problem that the plastic connecting piece of the connecting mode of the rod of the existing mosquito net support is easy to be damaged.

Description

Technical Field

[0001] This utility model relates to the field of assembled rod technology, specifically to a combined flat tube assembly. Background Technology

[0002] Some commercially available mosquito net frames are assembled by connecting two flat tubes (tube sections). One method of connecting the two flat tubes is with hollow ball bearings. This method requires drilling holes in the tubes. The two tubes must be identified before they can be inserted. Another method of connecting the two flat tubes is using plastic connectors. Plastic connectors are easily damaged under pressure, resulting in a short lifespan for the mosquito net frame. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a combined flat tube assembly is provided to solve the problem of easy damage to plastic connectors in the connection method of existing mosquito net frame poles.

[0004] To achieve the above objectives, a combined flat tube assembly is provided, comprising: Two flat pipe sections, one end of which extends to form a reduced diameter section, which is detachably inserted into the opening of the other flat pipe section; An adapter, one end of which is installed inside the reduced diameter section, and the other end of which extends into the interior of the other flat tube section; A tie spring is installed inside the other flat tube section, and the tie spring is tied to the other flat tube section and the other end of the adapter. After the reduced diameter section is separated from the opening of the other flat tube section, the other end of the adapter remains inside the opening of the other flat tube section. The adapter is bent to fold the combined flat tube assembly.

[0005] Furthermore, the adapter is plate-shaped, and one end of the adapter has a limiting end plate for preventing the adapter from disengaging from the reduced diameter section.

[0006] Furthermore, the reduced diameter section is connected to the flat pipe section via a transition section. The size of one end of the transition section is adapted to the outer diameter of the reduced diameter section, and the size of the other end of the transition section is adapted to the outer diameter of the flat pipe section. The size of the limiting end plate is larger than the size of one end of the transition section, and the limiting end plate is engaged within the transition section.

[0007] Furthermore, one end of the tension spring is connected to an arched elastic clip, the inner side of which faces the first flat tube section, and both ends of which press against the inner walls of the opposite sides of the other flat tube section.

[0008] Furthermore, the other end of the tie spring is connected to a hook, which is hooked onto the other end of the adapter.

[0009] Furthermore, the hook is an elastic hook, and the hook tip of the elastic hook extends outward toward the hook opening to form a locking part. The other flat tube section has a locking hole in its tube wall, and the locking part passes through the locking hole to prevent the reduced diameter section from disengaging from the opening of the other flat tube section.

[0010] Furthermore, the locking part has a thick end and a pointed end opposite each other, the thick end being connected to the hook tip and engaged in the lock hole, and the pointed end extending to the outside of the other flat tube section.

[0011] Furthermore, the adapter is a plastic adapter or a highly elastic metal adapter.

[0012] Furthermore, the adapter is inserted into the reduced diameter section.

[0013] Furthermore, the adapter is an elastic adapter, with one end of the adapter bent toward the other end to form an extension section. The extension section has a root near the end of the adapter and a head away from the end of the adapter. The middle part of the adapter and the head of the extension section are respectively pressed against the inner walls of opposite sides of the reduced diameter section. The reduced diameter section has a limiting hole, and the wall of the other flat tube section has a locking hole aligned with the limiting hole. The head of the extension section has a locking block, which is movably inserted into the limiting hole and the locking hole.

[0014] The beneficial effects of this utility model are as follows: the combined flat tube assembly of this utility model, by setting an adapter and a tie spring between two flat tube sections, allows the two flat tube sections to be quickly inserted and connected, and can also be folded by the plastic bending of the adapter after the two flat tube sections are separated. When the two flat tube sections are inserted and connected, no identification is required; they are easily and effortlessly connected under the elastic tension of the tie spring. After the two flat tube sections are folded, the tie spring remains inside the flat tube sections, and the two ends of the adapter, after bending, are respectively placed inside the openings of the two flat tube sections. The adapter contacts the openings of the flat tube sections, avoiding wear at the openings and extending the service life of the combined flat tube assembly. Furthermore, the two flat tube sections are connected by a reduced-diameter section, avoiding the use of plastic connectors, further extending the service life of the combined flat tube assembly. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the combined flat tube assembly according to an embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the two flat tube sections in the detached state according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the folded state of the combined flat tube assembly according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of an adapter according to an embodiment of the present utility model.

[0019] Figure 5 This is a schematic diagram of the locking part in an embodiment of the present utility model.

[0020] Figure 6 This is a schematic diagram of the key hole structure of the flat tube section according to an embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram showing the position of the locking part in the keyhole according to an embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the structure of the adapter with a tube plug according to an embodiment of the present invention.

[0023] Figure 9 This is a schematic diagram of the adapter with a tube plug in a folded state according to an embodiment of the present invention.

[0024] Figure 10 This is a schematic diagram of another structure of the adapter according to an embodiment of the present utility model.

[0025] Figure 11 This is a schematic diagram of the locking block of the adapter locking another flat pipe section according to an embodiment of the present invention.

[0026] Figure 12 This is a schematic diagram showing the locking block of the adapter in an embodiment of the present invention releasing the locking of another flat tube section.

[0027] Figure label: Flat tube section 1, lock hole 10, reduced diameter section 11, transition section 12; Adapter 2, Limiting end plate 21, Pipe plug 22, Extension section 23, Locking block 24; 3. Tie spring, 31. Elastic clip, 32. Hook, 321. Locking part, a thick end, b. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Reference Figures 1 to 12 As shown, this utility model provides a combined flat tube assembly, including: a flat tube section 1, an adapter 2, and a tie spring 3.

[0031] The number of flat tube sections 1 is at least two. In this embodiment, the cross-section of the flat tube section is rectangular or similar to a rectangle. The flat tube section is a flat tube of equal diameter, such as a metal flat tube or a plastic flat tube.

[0032] One end of one of the two flat pipe sections 1 extends to form a reduced diameter section 11. The reduced diameter section extends along the axial direction of the flat pipe section. The reduced diameter section 11 is detachably inserted into the opening of the other flat pipe section 1.

[0033] In this embodiment, the outer diameter of the reduced-diameter section is adapted to the inner diameter of the flat tube section, and the cross-sectional shape of the reduced-diameter section is adapted to the cross-sectional shape of the inner cavity of the flat tube section. The two flat tube sections are detachably connected together via the reduced-diameter section.

[0034] In this embodiment, the adapter is a bendable adapter. The adapter 2 is plastic or elastic, and can be bent or folded. The adapter can also return to its original shape after being bent.

[0035] The adapter 2 can be made of plastic (such as PE, PC, PA, etc.) or a highly elastic metal material (such as 65Mn).

[0036] One end of the adapter 2 is installed inside the reduced diameter section 11. The other end of the adapter 2 extends into the interior of another flat pipe section 1.

[0037] The tie spring 3 is located inside the other flat tube section 1. The tie spring 3 is tied to the other flat tube section 1 and the other end of the adapter 2.

[0038] Combination Figure 2 and Figure 3 As shown, after the reduced diameter section 11 is separated from the opening of another flat tube section 1 (i.e., the two flat tube sections are separated), the other end of the adapter 2 remains inside the opening of the other flat tube section 1. The adapter 2 is bent to fold the combined flat tube assembly.

[0039] In this embodiment, the adapter 2 is plate-shaped. The adapter is arranged in the same direction as the flat pipe section, that is, the width direction of the adapter is in the same direction as the length direction of the cross-section of the flat pipe section, and the length direction of the adapter is in the same direction as the length direction of the flat pipe section. One end of the adapter 2 forms a limiting end plate 21. The limiting end plate 21 is used to prevent the adapter 2 from disengaging from the reduced diameter section 11.

[0040] Continue reading Figure 2 and Figure 3 As shown, the reduced-diameter section 11 is connected to a flat pipe section 1 via a transition section 12. The outer diameter of the transition section gradually changes. Specifically, the outer diameter of one end of the transition section 12 is adapted to the outer diameter of the reduced-diameter section 11. The outer diameter of the other end of the transition section 12 is adapted to the outer diameter of the flat pipe section 1. The size of the limiting end plate 21 is larger than the size of one end of the transition section 12. The limiting end plate 21 is engaged within the transition section 12. The adapter is engaged in the transition section and the flat pipe section via the limiting end plate.

[0041] In other embodiments, the adapter is inserted within the reduced-diameter section. The adapter and the reduced-diameter section are tightly assembled together. See details... Figure 8 and Figure 9 As shown, a pipe plug 22 is formed at one end of the adapter 2. The thickness of the pipe plug is greater than the thickness of the adapter. The pipe plug 22 is embedded in the reduced diameter section of the flat pipe section. The shape and size of the cross-section of the pipe plug 22 are adapted to the shape and size of the cross-section of the inner cavity of the reduced diameter section. Preferably, the pipe plug 22 is interference-fitted with the reduced diameter section.

[0042] In a preferred embodiment, one end of the tension spring 3 is connected to an elastic retainer 31. The elastic retainer 31 is arched. Specifically, in this embodiment, the elastic retainer 31 is V-shaped. The inner side of the elastic retainer 31 is disposed facing a flat tube section 1. The two ends of the elastic retainer 31 press against the inner walls of the opposite sides of another flat tube section 1.

[0043] The distance between the two ends of the elastic clip 31 is greater than the cross-sectional length of the flat tube section. During the installation of the tie spring, the two ends of the elastic clip are compressed until the distance between them is less than the cross-sectional length of the flat tube section, thus inserting the elastic clip into the flat tube section. After releasing the two ends of the elastic clip, they press against the inner walls of opposite sides of the flat tube section under their own elasticity. Furthermore, after the two flat tube sections separate, the tie spring applies a pulling force to the elastic clip towards the other flat tube section, and the elastic clip, under its arched reaction force, can be firmly locked into one flat tube section.

[0044] The other end of the tension spring 3 is connected to a hook 32. The hook 32 is attached to the other end of the adapter 2.

[0045] This utility model relates to a combined flat tube assembly. By incorporating an adapter and a tension spring between two flat tube sections, the two sections can be quickly inserted and joined. Alternatively, after separation, the two sections can be folded using the plastic bending of the adapter. During insertion and joining, no identification is required; the tension spring easily and effortlessly joins them together. After folding, the tension spring remains inside the flat tube sections, while the bent adapter's two ends are positioned within the openings of the two sections. The adapter's contact with the openings prevents wear at the tube openings, extending the service life of the combined flat tube assembly. Furthermore, the use of a reduced-diameter section for insertion eliminates the need for plastic connectors, further extending the service life of the combined flat tube assembly.

[0046] See Figures 5 to 7 As shown, in some embodiments, the hook 32 is an elastic hook. The tie spring 3, the elastic clip 31, and the hook 32 are integrally formed and made of spring steel. The hook tip of the elastic hook extends outward toward the hook opening to form a locking portion 321. Figure 6 As shown, the other flat tube section 1 has a locking hole 10 in its tube wall. The locking part 321 passes through the locking hole 10 to prevent the reduced diameter section 11 from disengaging from the opening of the other flat tube section 1.

[0047] In a preferred embodiment, the locking portion 321 has a thick end a and a pointed end b. The thick end a is connected to the hook tip and engaged in the lock hole 10. The pointed end b extends to the outside of another flat tube section 1. The lock hole is elongated and is arranged along the length of the flat tube section. The size of the thick end of the locking portion is larger than the length of the lock hole opening, and the size of the pointed end of the locking portion is smaller than the length of the lock hole opening. The locking portion is U-shaped or V-shaped, and part of the locking portion is engaged in the lock hole to prevent the locking portion from extending completely outside the lock hole.

[0048] When it is necessary to fold two flat tube sections, press the tip of the locking part towards the inside of the locking hole (or the inside of the flat tube section), or directly pull the other flat tube section out of the first flat tube section (due to the locking part's pointed outer and thicker inner structure and elasticity), causing the locking part to retract into the inside of the flat tube section, slide towards the other flat tube section, and press against the inner wall of the flat tube section. When assembling two flat tube sections (i.e., connecting the two flat tube sections together), after inserting the reduced diameter section of the other flat tube section into the first flat tube section, the tension of the tie spring pulls the hook, causing the locking part on the hook to re-enter the locking hole to prevent the two flat tube sections from separating, thus improving the connection strength of the two flat tube sections.

[0049] In other embodiments, see Figures 10 to 12 The adapter 2 is a flexible adapter (e.g., the adapter is made of spring steel). One end of the adapter is bent toward the other end to form an extension 23. The other end of the adapter is connected to a hook.

[0050] like Figure 10 As shown, the extension section 23 has a root near the adapter and a head away from the adapter. One end of the adapter is bent to form the extension section, making the entire end of the adapter U-shaped. The distance between the extension section and the adapter gradually increases from the root of the extension section towards the head, so that the middle of the adapter and the head of the extension section press against the inner walls of opposite sides of the reduced diameter section. The reduced diameter section has a limiting hole. The wall of the other flat pipe section has a locking hole aligned with the limiting hole. A locking block 24 is formed at the head of the extension section. The locking block 24 is movably inserted into the limiting hole and the locking hole.

[0051] Preferably, the locking block is wedge-shaped. (Combined) Figure 11 and Figure 12 As shown, when the reduced-diameter section is inserted into the opening of another flat pipe section, the opening of the other flat pipe section presses against the inclined surface of the locking block, causing the locking block to retract into the limiting hole. After the locking hole and the locking block are aligned, the locking block is inserted into the locking hole under the elastic action of the adapter to lock the other flat pipe section.

[0052] When it is necessary to disassemble and separate the two flat tube sections, press the locking block towards the inside of the locking hole so that the locking block retracts into the limiting hole, thereby allowing the two flat tube sections to separate smoothly.

[0053] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A combined flat tube assembly, characterized in that, include: Two flat pipe sections, one end of which extends to form a reduced diameter section, which is detachably inserted into the opening of the other flat pipe section; The adapter is a bendable adapter, one end of which is installed inside the reduced diameter section, and the other end of which extends into the interior of the other flat pipe section; A tie spring is installed inside the other flat tube section, and the tie spring is tied to the other flat tube section and the other end of the adapter. After the reduced diameter section is separated from the opening of the other flat tube section, the other end of the adapter remains inside the opening of the other flat tube section. The adapter is bent to fold the combined flat tube assembly.

2. The combined flat tube assembly according to claim 1, characterized in that, The adapter is plate-shaped, and one end of the adapter has a limiting end plate for preventing the adapter from disengaging from the reduced diameter section.

3. The combined flat tube assembly according to claim 2, characterized in that, The reduced diameter section is connected to the flat pipe section via a transition section. The size of one end of the transition section is adapted to the outer diameter of the reduced diameter section, and the size of the other end of the transition section is adapted to the outer diameter of the flat pipe section. The size of the limiting end plate is larger than the size of one end of the transition section, and the limiting end plate is engaged within the transition section.

4. The combined flat tube assembly according to claim 1, characterized in that, One end of the tension spring is connected to an arched elastic clip, the inner side of which faces the first flat tube section, and both ends of which press against the inner walls of the opposite sides of the other flat tube section.

5. The combined flat tube assembly according to claim 4, characterized in that, The other end of the tie spring is connected to a hook, which is hooked onto the other end of the adapter.

6. The combined flat tube assembly according to claim 5, characterized in that, The hook is an elastic hook, and the hook tip of the elastic hook extends outward toward the hook opening to form a locking part. The other flat pipe section has a locking hole in its pipe wall, and the locking part passes through the locking hole to prevent the reduced diameter section from disengaging from the opening of the other flat pipe section.

7. The combined flat tube assembly according to claim 6, characterized in that, The locking part has a thick end and a pointed end opposite each other. The thick end is connected to the hook tip and is engaged in the lock hole, and the pointed end extends to the outside of the other flat tube section.

8. The combined flat tube assembly according to claim 1, characterized in that, The adapter is a plastic adapter or a highly elastic metal adapter.

9. The combined flat tube assembly according to claim 1, characterized in that, The adapter is inserted into the reduced diameter section.

10. The combined flat tube assembly according to claim 1, characterized in that, The adapter is an elastic adapter. One end of the adapter is bent toward the other end to form an extension. The extension has a root near the end of the adapter and a head away from the end of the adapter. The middle part of the adapter and the head of the extension are pressed against the inner walls of opposite sides of the reduced diameter section. The reduced diameter section has a limiting hole. The wall of the other flat tube section has a locking hole aligned with the limiting hole. The head of the extension has a locking block that is movably inserted into the limiting hole and the locking hole.

Images