Connecting piece, connecting pipe structure and detachable frame

Abstract

The invention relates to a connecting piece, a connecting pipe structure and a detachable frame. The connecting piece is used for connecting the first connecting pipe and the second connecting pipe. The connecting piece comprises a connecting body and an elastic arm. The connecting body is used for being arranged in the first connecting pipe and is in interference fit with the first connecting pipe. The elastic arm is connected to the connecting body and is provided with a locking protrusion. The first connecting pipe is provided with a first through hole, the second connecting pipe is provided with a second through hole, and the locking protrusion is used for being clamped in the first through hole and the second through hole.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe connection, and in particular to a connecting piece, a connecting pipe structure and a detachable frame. Background Art

[0002] The frame of a detachable pool is generally constructed using a connecting pipe structure. The connecting pipe structure usually uses a latch to connect different pipe bodies. However, this connecting pipe structure has the problems of difficult installation and low installation efficiency, and part of the latch will protrude from the pipe body, affecting the user experience. In addition, the pipe body or the latch may rust during use. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a connector capable of realizing quick connection between connecting pipes, and a connecting pipe structure and a detachable frame provided with the connector.

[0004] According to one aspect of the present application, a connector is provided, which is used to connect a first connecting tube and a second connecting tube. The connector includes a connecting body and an elastic arm. The connecting body is used to be arranged in the first connecting tube and has an interference fit with the first connecting tube. The elastic arm is connected to the connecting body and is provided with a locking protrusion. The first connecting tube is provided with a first through hole, the second connecting tube is provided with a second through hole, and the locking protrusion is used to engage with the first through hole and the second through hole.

[0005] Further, one end of the elastic arm serves as a connecting end and is connected to the connecting body, and the other end of the elastic arm serves as a free end and extends in a direction perpendicular to a cross section of the connecting body.

[0006] Further, one end of the elastic arm serves as a connecting end and is connected to the connecting body, and the other end of the elastic arm serves as a free end and is provided with the locking protrusion.

[0007] Furthermore, the connecting body is a hollow annular structure.

[0008] Furthermore, the connecting end of the elastic arm is connected to the inner wall of the connecting body.

[0009] Furthermore, it also includes:

[0010] A positioning protrusion, arranged on the connecting body or the elastic arm;

[0011] Wherein, the first connecting pipe is provided with a positioning hole, and the positioning protrusion is used for plugging and matching with the positioning hole.

[0012] Furthermore, the positioning protrusion is provided on the connecting body and is located at a connecting end of the connecting body close to the elastic arm.

[0013] Furthermore, the connecting body has a first recessed portion, the first recessed portion is located on at least one of the upper and lower sides of the connecting body, and the positioning protrusion is arranged on the first recessed portion.

[0014] Furthermore, at least one of the left and right sides of the connecting body has an elastic support arm, and the elastic support arm is used to generate elastic deformation to bend inwards.

[0015] Furthermore, it also includes:

[0016] A support rib is provided on the connection body and protrudes from the outer surface of the connection body, and the support rib is used to abut against the inner wall of the first connection pipe.

[0017] Furthermore, the elastic arm is provided with a reinforcing rib, and the reinforcing rib is connected between the locking protrusion, the elastic arm and the connecting body, or the reinforcing rib is connected between the locking protrusion and the elastic arm.

[0018] Furthermore, the connecting body and the elastic arm are integrally formed.

[0019] Furthermore, the connecting piece is made of elastically deformable material.

[0020] Furthermore, the locking protrusion is provided with a wedge-shaped surface, and the wedge-shaped surface is used to be pushed by the inner wall of the second connecting pipe to make the locking protrusion engage with or release the engagement with the second through hole.

[0021] According to another aspect of the present application, a connecting pipe structure is provided, which includes a first connecting pipe and a connecting piece in any one of the above embodiments.

[0022] According to another aspect of the present application, a detachable frame is provided, comprising: a first connecting tube, a second connecting tube, and a connecting piece in any of the above embodiments, wherein the second connecting tube is detachably connected to the first connecting tube through the connecting piece.

[0023] According to the connector, the connecting pipe structure and the detachable frame of the embodiment of the present invention, the connector is fixed in the first connecting pipe by means of interference fit, which avoids setting too many perforations on the first connecting pipe and the second connecting pipe, especially avoiding the perforations set on the upper side of the first connecting pipe and the second connecting pipe, reducing the risk of corrosion and rust caused by water entering the connecting pipe structure through the perforations during use, and making the appearance of the connecting pipe structure more concise and beautiful. The connecting pipe structure and the connector of this embodiment realize the rapid connection of the first connecting pipe and the second connecting pipe, reduce the difficulty of installation, and improve the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a detachable frame according to an embodiment of the present application;

[0025] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 yes Figure 1 A cross-sectional view of the connecting piece of the detachable frame;

[0027] Figure 4 yes Figure 1 An exploded view of the removable frame in ;

[0028] Figure 5 It is a schematic diagram of the structure of the connector;

[0029] Figure 6 yes Figure 5 A schematic diagram of the structure of the connector in another perspective;

[0030] Figure 7 yes Figure 6 a rear view of the connector in FIG. 1 ; and

[0031] Figure 8 yes Figure 6 Right side view of the connector.

[0032] Reference numerals

[0033] 1. first connecting pipe, 11. first through hole, 12. positioning hole, 13. horizontal pipe section, 14. vertical pipe section, 15. first plug-in end;

[0034] 2. second connecting pipe, 21. second through hole, 22. second plug-in end, 23. plug-in pipe section, 24. connecting pipe section, 25. limiting step;

[0035] 3. Connecting piece, 31. Connecting body, 311. Elastic connecting arm, 3111. First recess, 312. Elastic supporting arm, 3121. Second recess, 32. Elastic arm, 321. Connecting end, 322. Free end, 323. Reinforcing rib, 323a. First reinforcing rib, 323b. Second reinforcing rib, 324. Connecting rib, 33. Locking protrusion, 331. Wedge-shaped surface, 331a. First wedge-shaped surface, 331b. Second wedge-shaped surface, 34. Positioning protrusion, 35. Supporting rib;

[0036] D1, first direction, D2, second direction, D3, third direction. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0043] According to an embodiment of the present invention, a connecting piece, a connecting pipe structure having the connecting piece, and a detachable frame having the connecting pipe structure are provided. Figures 1 to 3 As shown, the frame includes a first connecting pipe 1, a second connecting pipe 2 and a connecting piece 3. The second connecting pipe 2 is detachably connected to the first connecting pipe 1 through the connecting piece 3. In this embodiment, the frame can be used to construct a support frame for a folding pool, for example. The first connecting pipe 1 is, for example, a three-way pipe of the supporting frame, and the second connecting pipe 2 is, for example, a transverse pipe of the supporting frame, that is, the connecting piece 3 can be used for the connection between the three-way pipe and the transverse pipe. The frame also includes a fourth connecting pipe 4 connected to the first connecting pipe 1.

[0044] Furthermore, the first connecting pipe 1 includes a transverse pipe section 13 and a vertical pipe section 14 that are interconnected. The transverse pipe section 13 is arranged horizontally, and the vertical pipe section 14 is arranged vertically, so that the first connecting pipe 1 is a T-shaped structure as a whole. In this embodiment, both ends of the transverse pipe section 13 are connected to the second connecting pipe 2 through the connecting piece 3. Of course, in other embodiments, only one end of the transverse pipe section 13 can be connected to the second connecting pipe 2 through the connecting piece 3. Figures 1 to 3 , the vertical pipe section 14 is connected to the fourth connecting pipe 4. The fourth connecting pipe 4 is, for example, a vertical pipe. The fourth connecting pipe 4 can be detachably connected to the first connecting pipe 1 through a positioning snap, or can be detachably connected to the first connecting pipe 1 through a connector 3, or the fourth connecting pipe 4 is threadedly connected to the first connecting pipe 1.

[0045] In this embodiment, the second connecting pipe 2 includes a plug-in pipe section and a connecting pipe section connected to each other. The outer diameter of the plug-in pipe section is smaller than the outer diameter of the connecting pipe section, so that a limiting step 25 is formed at the connection between the plug-in pipe section and the connecting pipe section.

[0046] In one embodiment, if Figures 1 to 3 As shown, the connecting pipe structure includes a first connecting pipe 1 and a connecting member 3. The connecting pipe structure can be used to construct a support frame of a folding pool. The connecting pipe structure is used to connect the first connecting pipe 1 to the second connecting pipe 2 through the connecting member 3. In other embodiments, the connecting member 3 can also be used for connection between, for example, the second connecting pipe 2 and the second connecting pipe 2, or the fourth connecting pipe 4 and the fourth connecting pipe 4, or the first connecting pipe 1 and the fourth connecting pipe 4, etc.

[0047] In one embodiment, if Figure 3As shown, the connector 3 is used to connect the first connecting tube 1 and the second connecting tube 2. The connector 3 includes a connecting body 31 and an elastic arm 32. The connecting body 31 is used to be arranged in the first connecting tube 1 and is interference fit with the first connecting tube 1. That is, at least a part of the connecting body 31 abuts against the inner wall of the first connecting tube 1, so that the connecting body 31 is fixed in the first connecting tube 1 by the friction between the first connecting body 31 and the inner wall of the first connecting tube 1. In some embodiments, the connector 3 can be prefabricated in the first connecting tube 1 during the production process to reduce the assembly process of the second connecting tube 2 and the first connecting tube 1. The elastic arm 32 is connected to the connecting body 31 and is provided with a locking protrusion 33. The first connecting tube 1 is provided with a first through hole 11, and the second connecting tube 2 is provided with a second through hole 21. The locking protrusion 33 is used to engage with the first through hole 11 and the second through hole 21. In this embodiment, the second connecting tube 2 is inserted into the first connecting tube 1, and the locking protrusion 33 passes through the second through hole 21 and the first through hole 11 in sequence to connect the first connecting tube 1 with the second connecting tube 2. In another embodiment not shown, the first connecting tube 1 may be plugged into the second connecting tube 2, and the locking protrusion 33 passes through the first through hole 11 and the second through hole 21 in sequence to connect the first connecting tube 1 with the second connecting tube 2. In this embodiment, the first through hole 11 is arranged on the lower surface of the transverse tube section 13, and the second through hole 21 is arranged on the lower surface and the upper surface of the second connecting tube 2. The lower surface recorded here and the upper surface mentioned below are relative to the upper and lower directions of the first connecting tube 1 and the second connecting tube 2 during use. Specifically, the transverse tube section 13 and the second connecting tube 2 are both straight round tubes, the first through hole 11 is arranged on the part of the tube wall of the transverse tube section 13 closest to the placement plane (such as the ground) of the connecting tube structure, and the second through hole 21 is arranged on the part of the tube wall of the second connecting tube 2 closest to the placement plane (such as the ground) of the connecting tube structure and the part of the tube wall farthest from the placement plane (such as the ground) of the connecting tube structure. In other embodiments, the second through hole 21 may be arranged only on the lower surface of the second connecting tube 2.

[0048] The connecting pipe structure and the connecting piece 3 of this embodiment are fixed in the first connecting pipe 1 by interference fit, which reduces the number of perforations on the first connecting pipe 1 and the second connecting pipe 2, and especially avoids the need to open perforations on the upper surfaces of the first connecting pipe 1 and the second connecting pipe 2, thereby reducing the risk of corrosion and rust caused by water entering the connecting pipe structure through the perforations under the action of gravity during use, and making the appearance of the connecting pipe structure more concise and beautiful. The connecting pipe structure and the connecting piece 3 of this embodiment realize the rapid connection between the first connecting pipe 1 and the second connecting pipe 2, reduce the difficulty of installation, and improve the efficiency of installation.

[0049] In one embodiment, if Figure 3 , Figure 5 and Figure 6As shown, the connecting body 31 and the elastic arm 32 are integrally formed. Specifically, the connecting member 3 is an integrally formed member made of plastic material by injection molding. The connecting body 31 is a hollow annular structure, so that the connecting body 31 is appropriately deformed during the process of being installed in the first connecting tube 1, so that the connecting member 3 is installed in the first connecting tube 1 and has an interference fit with the first connecting tube 1. In this embodiment, please refer to Figure 7 , the outer contour of the cross section of the connecting body 31 is irregular. When the connecting piece 3 is located in the first connecting tube 1, a portion of the outer surface of the connecting body 31 is squeezed by the inner wall of the first connecting tube 1, and another portion of the outer surface of the connecting body 31 does not contact the inner wall of the first connecting tube 1, further increasing the elastic deformation space of the connecting body 31, making it easier to install and fix the connecting piece 3 into the first connecting tube 1. In other embodiments, the connecting body 31 can be a solid structure, as long as the connecting body 31 has a certain elasticity to install the connecting piece 3 into the first connecting tube 1 and have an interference fit with the first connecting tube 1.

[0050] Continue to refer to Figures 5 to 7 The connecting body 31 includes two elastic connecting arms 311 and two elastic supporting arms 312. The two elastic connecting arms 311 are arranged opposite to each other, and the two elastic supporting arms 312 are arranged opposite to each other, and both ends of each elastic connecting arm 311 are respectively connected to one end of the two elastic supporting arms 312, thereby forming a hollow annular structure. In this embodiment, when the connecting member 3 is installed in the transverse pipe section 13 of the first connecting pipe 1, the two elastic connecting arms 311 are arranged at intervals along the up-down direction of the transverse pipe section 13, and the two elastic supporting arms 312 are arranged at intervals along the left-right direction of the transverse pipe section 13.

[0051] Furthermore, the connecting body 31 has a first recess 311 to facilitate elastic deformation of the connecting body 31. In this embodiment, both elastic connecting arms 311 are provided with a first recess 3111 recessed into the hollow inner cavity of the connecting body 31. In other embodiments, only one of the elastic connecting arms 311 may be provided with the first recess 3111, for example, only the elastic connecting arm 311 located at the bottom is provided with the first recess 3111, so as to facilitate the arrangement of the positioning protrusion 31 and other structures mentioned below.

[0052] Furthermore, both elastic support arms 312 have a second recess 3121 that is recessed into the hollow inner cavity of the connection body 31, thereby increasing the elastic deformation of the connection body 31 and facilitating the placement of the connector 3 in the first connection tube 1 and interference fit with the connection tube 1. Specifically, the second recess 3121 is formed by an inwardly concave arc surface. In other embodiments, only one of the elastic support arms 312 may have the second recess 3121.

[0053] In one embodiment, if Figures 6 to 8As shown, the connector 3 further includes a support rib 35. The support rib 35 is disposed on the connector body 31 and protrudes from the outer surface of the connector body 31. The support rib 35 is used to abut against the inner wall of the first connector tube 1, further increasing the friction between the connector 3 and the inner wall of the first connector tube 1, so that the connector 3 is more firmly connected to the first connector tube 1.

[0054] In one embodiment, if Figures 5 to 8 As shown, one end of the elastic arm 32 serves as a connecting end 321 and is connected to the connecting body 31. The direction perpendicular to the cross section of the connecting body 31 is the first direction D1, and the other end of the elastic arm 32 serves as a free end 322 and extends substantially parallel to the first direction D1. In other embodiments, the extension direction of the free end 322 of the elastic arm 32 is at an angle to the first direction D1.

[0055] Reference Figures 5 to 8 , the connection end 321 of the elastic arm 32 is connected to the inner wall of the connection body 31, thereby increasing the deformation space of the elastic arm 32. In other embodiments, the connection end 321 of the elastic arm 32 can also be connected to the outer wall of the connection body 31, for example, the elastic arm 32 can be connected to the bottom wall of the first recess 311, etc., which is not limited in this application. Figures 5 to 8 The locking protrusion 33 is disposed at the free end 322 of the elastic arm 32, so that the elastic arm 32 is more easily deformed when the locking protrusion 33 is pressed, so that the locking protrusion 33 exits the first through hole 11 and / or the second through hole 21. In other embodiments, the locking protrusion 33 can be disposed at any position between the connecting end 321 and the free end 322 of the elastic arm 32.

[0056] Reference Figures 6 to 8 , the elastic arm 32 is provided with a reinforcing rib 323, and the reinforcing rib 323 extends parallel to the extension direction of the elastic arm 32. The reinforcing rib 323 includes a first reinforcing rib 323 and a second reinforcing rib 323. One end of the first reinforcing rib 323 is connected to the connection end 321 of the elastic arm 32 and is connected to the connecting body 31, and the other end extends to the free end 322 and is connected to the locking protrusion 33 to increase the strength of the elastic arm 32. The number of the second reinforcing ribs 323 is two or a multiple of two. The second reinforcing rib 323 is arranged parallel to the first reinforcing rib 323 and is symmetrically distributed on both sides of the first reinforcing rib 323. The second reinforcing rib 323 is respectively connected to the elastic arm 32 and the locking protrusion 33, thereby increasing the strength of the connection between the two. In this embodiment, the second reinforcing rib 323 is roughly a triangular plate structure, and the two sides of the second reinforcing rib 323 are respectively connected to the elastic arm 32 and the locking protrusion 33. A connecting rib 324 is provided at the connection point between the elastic arm 32 and the connecting body 31 , so as to increase the connection strength between the elastic arm 32 and the connecting body 31 .

[0057] like Figure 3 , Figures 5 and 6 As shown, the locking protrusion 33 is provided with a wedge-shaped surface 331, and the wedge-shaped surface 331 is used to be pushed by the inner wall of the second connecting pipe 2 to make the locking protrusion 33 engage or disengage with the second through hole 21. The wedge-shaped surfaces 331 are provided on both sides of the locking protrusion 33 along the extension direction of the elastic arm 32. Specifically, the front side surface of the locking protrusion 33 forms a first wedge-shaped surface 331a, and the rear side surface of the locking protrusion 33 forms a second wedge-shaped surface 331b.

[0058] When the second connecting pipe 2 needs to be inserted into the transverse pipe section 13 of the first connecting pipe 1, Figure 3 The locking projection 33 is applied with an external force in the second direction D2 so that the locking projection 33 is withdrawn from the first through hole 11. A gap is formed between at least a portion of the first wedge surface 331a and the inner wall of the transverse pipe section 13, and one end of the second connecting pipe 2 (hereinafter referred to as the second plug-in end 22) is inserted into the gap through one end of the transverse pipe section 13 (hereinafter referred to as the first plug-in end 15). At this time, the external force applied to the locking projection 33 can be released, and the inner wall of the second connecting pipe 2 can continue to move along the third direction D3 and push the first wedge surface 331a so that the inner wall of the second connecting pipe 2 is further inserted between the locking projection 33 and the inner wall of the transverse pipe section 13, and the second plug-in end 22 of the second connecting pipe 2 can pass over the locking projection 33 and be located on the side of the locking projection 33 away from the first plug-in end 15 of the transverse pipe section 13. When the plug-in tube section 23 of the second connecting tube 2 is completely inserted into the transverse tube section 13 and the limiting step 25 abuts against the second plug-in end 22, the second connecting tube 2 is inserted into place. At this time, the second connecting tube 2 can be rotated until the second through-hole 21 coincides with the first through-hole 11, and the pushing effect of the inner wall of the second connecting tube 2 on the first wedge surface 331a is eliminated, so that the locking protrusion 33 automatically engages with the first through-hole 11 and the second through-hole 21 under the elastic restoring force of the elastic arm 32.

[0059] Similarly, when the second connecting pipe 2 needs to be separated from the transverse pipe section 13, Figure 3 The locking projection 33 is applied with an external force in the second direction D2 so that the locking projection 33 is withdrawn from the second through hole 21. A gap is formed between at least a portion of the second wedge-shaped surface 331b and the inner wall of the transverse pipe section 13, and a portion of the inner wall of the second connecting pipe 2 is inserted into the gap. At this time, the external force on the locking projection 33 is released, and the inner wall of the second connecting pipe 2 can continue to move in the opposite direction of the third direction D3 and push the second wedge-shaped surface 331b so that the inner wall of the second connecting pipe 2 is further inserted between the locking projection 33 and the inner wall of the transverse pipe section 13, and the second plug-in end 22 of the second connecting pipe 2 can pass over the locking projection 33 and be located on the side of the first plug-in end 15 of the locking projection 33 close to the transverse pipe section 13, so that the plug-in pipe section 23 of the second connecting pipe 2 can be removed from the transverse pipe section 13. At this time, the locking projection 33 automatically engages with the first through hole 11 under the elastic restoring force of the elastic arm 32.

[0060] In one embodiment, if Figure 3 , Figures 5 and 6 As shown, the connector 3 further includes a positioning protrusion 34. The positioning protrusion 34 is provided on the connector body 31 and is located at the connecting end 321 of the connector body 31 close to the elastic arm 32. The connecting end 321 of the elastic arm 32 is connected to the inner wall of the connector body 31, and the positioning protrusion 34 is located at a position on the outer surface of the connector body 31 opposite to the connecting end 321. The transverse pipe section 13 is provided with a positioning hole 12, and the positioning protrusion 34 is used for plugging and matching with the positioning hole 12. Such a configuration makes it easy to install the connector 3 at a suitable position in the transverse pipe section 13.

[0061] In an embodiment not shown, when the second connecting tube 2 is plugged into position relative to the transverse tube section 13, the second plugging end portion 22 of the second connecting tube 2 abuts against the positioning protrusion 34. In this way, it can be determined whether the second connecting tube 2 is plugged into position by whether the second plugging end portion 22 abuts against the positioning protrusion 34. In this way, the plugging and positioning accuracy of the second connecting tube 2 can be further improved. In another embodiment, the positioning protrusion 34 can be provided on the elastic arm 32.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A connector for connecting a first connecting pipe and a second connecting pipe, characterized in that: The connecting piece comprises: a connecting body, configured to be disposed in the first connecting pipe and to be interference-fitted with the first connecting pipe; and An elastic arm, connected to the connecting body and provided with a locking protrusion; The first connecting tube is provided with a first through hole, the second connecting tube is provided with a second through hole, and the locking protrusion is used to engage with the first through hole and the second through hole.

2. The connecting piece according to claim 1, characterized in that: One end of the elastic arm serves as a connecting end and is connected to the connecting body, and the other end of the elastic arm serves as a free end and extends in a direction perpendicular to a cross section of the connecting body.

3. The connecting piece according to claim 1, characterized in that: One end of the elastic arm serves as a connecting end and is connected to the connecting body, and the other end of the elastic arm serves as a free end and is provided with the locking protrusion.

4. The connector according to claim 1, characterized in that: The connecting body is a hollow annular structure.

5. The connecting piece according to claim 4, characterized in that: The connecting end of the elastic arm is connected to the inner wall of the connecting body.

6. The connector according to claim 1, characterized in that: Also includes: A positioning protrusion, arranged on the connecting body or the elastic arm; Wherein, the first connecting pipe is provided with a positioning hole, and the positioning protrusion is used for plugging and matching with the positioning hole.

7. The connecting piece according to claim 6, characterized in that: The positioning protrusion is arranged on the connecting body and is located at a connecting end of the connecting body close to the elastic arm.

8. The connecting piece according to claim 6, characterized in that: The connecting body has a first recessed portion, the first recessed portion is located on at least one of the upper and lower sides of the connecting body, and the positioning protrusion is arranged on the first recessed portion.

9. The connecting piece according to claim 1, characterized in that: At least one of the left and right sides of the connecting body has an elastic support arm, and the elastic support arm is used to generate elastic deformation of bending inwards.

10. The connecting piece according to any one of claims 1 to 9, characterized in that: Also includes: A support rib is provided on the connection body and protrudes from the outer surface of the connection body, and the support rib is used to abut against the inner wall of the first connection pipe.

11. The connecting piece according to any one of claims 1 to 9, characterized in that: The elastic arm is provided with a reinforcing rib, and the reinforcing rib is connected between the locking protrusion, the elastic arm and the connecting body, or the reinforcing rib is connected between the locking protrusion and the elastic arm.

12. The connecting piece according to any one of claims 1 to 9, characterized in that: The connecting body and the elastic arm are integrally formed.

13. The connecting piece according to any one of claims 1 to 9, characterized in that: The connecting piece is made of elastically deformable material.

14. The connecting piece according to any one of claims 1 to 9, characterized in that: The locking protrusion is provided with a wedge-shaped surface, and the wedge-shaped surface is used to be pushed by the inner wall of the second connecting pipe to make the locking protrusion engage with or release the engagement with the second through hole.

15. A connecting pipe structure, characterized in that: The invention comprises a first connecting pipe and a connecting piece according to any one of claims 1 to 14.

16. A detachable frame, characterized in that: include: a first connecting pipe; A second connecting pipe; as well as The connecting piece according to any one of claims 1 to 14; The second connecting pipe is detachably connected to the first connecting pipe through the connecting piece.

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