Novel square tube

Abstract

The utility model relates to the field of pipes, in particular to a novel square pipe. Comprising a square pipe body, and an inserting pipe section and an adapting pipe section are fixedly arranged at the two ends of the square pipe body respectively; the adapting pipe section can be used for adapting the inserting pipe section, and the outer contour of the radial section where the maximum appearance of the adapting pipe section is located does not exceed the outer contour of the radial section where the maximum appearance of the square pipe body is located; the adapting pipe section comprises a limiting part, and a clamping part capable of being clamped with the limiting part is arranged on the inserting pipe section; the limiting part comprises an elastic blocking piece which protrudes towards the interior of the pipe and can change in the radial direction, and when the inserting pipe section and the adapting pipe section of the adjacent pipe are in butt joint oppositely, the elastic blocking piece is extruded by the clamping part so that the clamping part can enter the clamping position of the elastic blocking piece in a radial shrinkage mode. And the elastic blocking piece and the clamping part form axial top contact limiting in a radial expansion manner. The square tube is convenient to connect.

Description

Technical Field

[0001] The present application relates to the field of pipes, and in particular to a new type of square pipe. Background Art

[0002] The radial cross section of the square tube in the related art is roughly square. Compared with the circular tube, the square tube has a horizontal contact surface, which makes it more stable and less likely to roll when the tubes are stacked. In addition, the connection of the square tube is mostly done by adding additional parts, such as pipe clamps, etc. This installation structure is inconvenient to operate. Summary of the invention

[0003] In view of this, the present application provides a novel square tube, which is easy to connect.

[0004] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A novel square tube, characterized in that: it comprises a square tube body, and both ends of the square tube body are respectively fixedly provided with an inserting tube section and a receiving tube section; the receiving tube section can receive the inserting tube section, and the outer contour of the radial cross section at the maximum shape of the receiving tube section does not exceed the outer contour of the radial cross section at the maximum shape of the square tube body;

[0006] The receiving tube section includes a limiting portion, and the plug-in tube section is provided with a clamping portion that can form a clamping connection with the limiting portion; the limiting portion includes an elastic blocking member that protrudes into the tube and can change radially, and when the plug-in tube section and the receiving tube section of the adjacent pipe are butt-jointed with each other, the elastic blocking member is squeezed by the clamping portion and radially contracts so that the clamping portion enters the clamping position of the elastic blocking member, and the elastic blocking member forms an axial contact limit with the clamping portion in a radially expanded manner.

[0007] The above-mentioned application is a new type of square tube, in which the shape of the receiving tube section does not exceed the shape of the square tube body, so that the horizontal contact surface of the square tube body is not damaged, and the tube has good stability during stacking and installation. In addition, a limiting portion is provided on the receiving tube section, and an elastic protrusion is provided on the plug-in tube end. When the plug-in tube section and the receiving tube section are installed in place, the limiting portion and the elastic protrusion constitute a clamping structure, which can effectively prevent the pipeline from being disengaged. Moreover, the elastic blocking member is radially variable. When the plug-in tube section is sent into the receiving tube section, the clamping portion squeezes the elastic blocking member to shrink it, so that the clamping portion can reach the clamping position to form a clamping connection. This installation method is convenient.

[0008] In some embodiments, the limiting portion is where the maximum outer shape of the receiving pipe section is located, and the shape of the outer wall and the inner wall of the limiting portion is a square structure with four corner arc transitions. The number of the elastic blocking members is four and they are arranged at the four corners of the limiting portion. The shape of the outer wall of the clamping portion is also a square structure with four corner arc transitions, and the four corners of the clamping portion are respectively clamped with the four elastic blocking members of the adjacent pipe.

[0009] The limiting part of the receiving pipe section and the clamping part of the plug-in pipe section are also set to a square structure, the purpose of which is to ensure the consistency of the overall pipe material and improve the mechanical properties of the pipe material. In addition, the elastic blocking parts are set at the four corners of the limiting part, and only the four corners of the clamping part are used in conjunction with the four elastic blocking parts. When the angle position of the clamping part presses the elastic blocking part, the angle position of the clamping part may also be radially bent. Compared with the circular structure of the clamping part, it is more labor-saving when installing the pipe.

[0010] In some embodiments, the elastic blocking member is integrally connected to the limiting portion, and a contraction cavity is provided inside the elastic blocking member, and the elastic blocking member is deformed by contracting into the contraction cavity when subjected to radial compression. The elastic blocking member has a contraction cavity inside, and when adjacent pipes are butt-jointed, the clamping portion can push open the elastic blocking member, causing it to deform into the cavity.

[0011] In some embodiments, the shrinkage cavity is connected at both ends along the axial direction of the receiving pipe section. The shrinkage cavity is set as a structure that is axially through at both ends to facilitate the shrinkage and reset of the elastic blocking member. Compared with the shrinkage cavity being through at both ends in the radial direction, the axial through structure has another advantage that it will not destroy the ring stiffness of the receiving pipe section. The through structure of the shrinkage cavity can be formed as a whole with the pipe material, or it can be formed by opening holes later.

[0012] In some embodiments, the contraction cavities of the four elastic blocking members respectively form openings toward the outer walls of the four corners of the limiting portion, and the openings are reserved when the elastic blocking members are integrally formed.

[0013] In some embodiments, the elastic blocking member has a first inclined surface on the side close to the port of the receiving pipe section, and the first inclined surface is gradually inclined in the direction away from the port of the receiving pipe section during the radial change process inwardly, and the clamping portion has a second inclined surface on the side close to the port of the plug-in pipe section, and the second inclined surface is gradually inclined in the direction away from the port of the plug-in pipe section during the radial change process outwardly. The first inclined surface and the second inclined surface are provided to facilitate the coordinated use of the clamping portion and the elastic blocking member.

[0014] In some embodiments, the inner wall of the limiting portion is further provided with a groove structure for accommodating the clamping portion, and the groove structure is located on a side of the elastic blocking member close to the square tube body.

[0015] In some embodiments, the plug-in pipe section further includes a protrusion integrally connected to the clamping portion, the protrusion is located on the side of the clamping portion away from the square tube body, and a sealing ring is fixedly arranged on the protrusion; the receiving pipe section further includes a sealing connection portion integrally connected to the limiting portion for receiving the protrusion, the sealing connection portion is located on the side of the limiting portion close to the square tube body, and the shape of the sealing connection portion is smaller than the shape of the limiting portion, and when the sealing connection portion receives the protrusion of the adjacent pipe, the sealing ring connects the outer wall of the protrusion and the inner wall of the sealing connection portion in an extrusion sealing manner. The connection between the sealing ring and the protrusion can be a hot melt connection, a groove clamping or other connection structure.

[0016] In some embodiments, the inner and outer walls of the protruding portion and the sealing connection portion are both square or circular.

[0017] In some embodiments, the square tube body is a corrugated tube with wave crests and troughs arranged alternately, the shape of the wave crests is square, and the shape of the wave troughs is round.

[0018] In some embodiments, the square tube body and the plug-in tube sections and the receiving tube sections at both ends are integrally formed. According to needs, the square tube body and the plug-in tube sections and the receiving tube sections can also be hot-melt connected later or fixed with a connecting structure.

[0019] It can be seen from the above technical solution that the present application has at least the following advantages and positive effects:

[0020] The present application discloses a new type of square tube, wherein the outer shape of the receiving tube section does not exceed the outer shape of the square tube body, thus not destroying the horizontal contact surface of the square tube body, and the tube has good stability during stacking and installation. In addition, a limiting portion is provided on the receiving tube section, and an elastic protrusion is provided on the plug-in tube end. When the plug-in tube section and the receiving tube section are installed in place, the limiting portion and the elastic protrusion constitute a snap-fit ​​structure, which can effectively prevent the pipeline from being disengaged. Moreover, the elastic blocking member is radially variable. When the plug-in tube section is sent into the receiving tube section, the snap-fit ​​portion squeezes the elastic blocking member to shrink it, thereby enabling the snap-fit ​​portion to reach the snap-fit ​​position to constitute a snap-fit. This installation method is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of the plug-in pipe section in the embodiment of the present application;

[0023] Figure 3This is a schematic diagram of the structure of the receiving pipe section in the embodiment of the present application;

[0024] Figure 4 This is a connection diagram of an embodiment of the present application;

[0025] Explanation of reference numerals: 1. square tube body; 11. wave crest; 12. wave trough; 2. plug-in tube section; 21. clamping portion; 211. second inclined surface; 22. raised portion; 3. receiving tube section; 31. limiting portion; 311. elastic blocking member; 312. contraction cavity; 313. first inclined surface; 314. groove structure; 32. sealing connection portion; 4. sealing ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The terms used in the implementation method of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0027] See also Figures 1 to 4 The embodiment of the present application provides a novel square tube, comprising a square tube body 1, wherein both ends of the square tube body 1 are respectively fixedly provided with a plug-in tube section 2 and a receiving tube section 3, for facilitating the butt joint of adjacent tubes; wherein the receiving tube section 3 can receive the plug-in tube section 2, and the outer contour of the radial cross section at the maximum outer shape of the receiving tube section 3 does not exceed the outer contour of the radial cross section at the maximum outer shape of the square tube body 1;

[0028] The receiving pipe section 3 includes a limiting portion 31, and the plug-in pipe section 2 is provided with a clamping portion 21 that can form a clamping connection with the limiting portion 31; the limiting portion 31 includes an elastic blocking member 311 that protrudes into the pipe and can change radially. When the plug-in pipe section 2 and the receiving pipe section 3 of the adjacent pipe are butted against each other, the elastic blocking member 311 is squeezed by the clamping portion 21, and the clamping portion 21 enters the clamping position of the elastic blocking member 311 in a radially contracted manner, and the elastic blocking member 311 forms an axial contact limit with the clamping portion 21 in a radially expanded manner. The square pipe can be made of materials such as PVC and PP, and the square pipe is used for sewage discharge or cable threading.

[0029] In this embodiment, the outer shape of the receiving pipe section 3 does not exceed the outer shape of the square tube body 1, so that the horizontal contact surface of the square tube body 1 is not damaged, and the pipe has good stability during stacking and installation. In addition, a limiting portion 31 is provided on the receiving pipe section 3, and an elastic protrusion is provided on the plug-in pipe end. When the plug-in pipe section 2 and the receiving pipe section 3 are installed in place, the limiting portion 31 and the elastic protrusion constitute a clamping structure, which can effectively prevent the pipeline from being disengaged. Moreover, the elastic blocking member 311 is radially variable. When the plug-in pipe section 2 is sent into the receiving pipe section 3, the clamping portion 21 squeezes the elastic blocking member 311 to shrink it, so that the clamping portion 21 can reach the clamping position to form a clamping connection. This installation method is convenient.

[0030] In some embodiments, the limiting portion 31 is where the maximum outer shape of the receiving pipe section 3 is located. The shape of the outer wall and the inner wall of the limiting portion 31 is a square structure with four corner arc transitions. The number of elastic blocking members 311 is four and they are arranged at the four corners of the limiting portion 31. The shape of the outer wall of the clamping portion 21 is also a square structure with four corner arc transitions. The four corners of the clamping portion 21 are respectively clamped with the four elastic blocking members 311 of the adjacent pipe.

[0031] The limiting part 31 of the receiving pipe section 3 and the clamping part 21 of the plug-in pipe section 2 are also set to a square structure, the purpose of which is to ensure the consistency of the overall pipe material, and the mechanical properties of the pipe material will be better. In addition, the elastic blocking members 311 are set at the four corners of the limiting part 31, and only the four corners of the clamping part 21 are used in conjunction with the four elastic blocking members 311. When the angle position of the clamping part 21 presses the elastic blocking member 311, the angle position of the clamping part 21 may also be radially bent. Compared with the clamping part 21 adopting a full circle circular structure, it is more labor-saving when installing the pipe.

[0032] In some embodiments, the elastic blocking member 311 is integrally connected with the limiting portion 31, and a contraction cavity 312 is provided inside the elastic blocking member 311. When the elastic blocking member 311 is radially compressed, it is deformed by contracting into the contraction cavity 312. The elastic blocking member 311 has a contraction cavity 312 inside, and when adjacent pipes are butt-jointed, the clamping portion 21 can push open the elastic blocking member 311 to deform into the cavity.

[0033] In some embodiments, the shrinkage cavity 312 is connected at both ends along the axial direction of the receiving pipe section 3. The shrinkage cavity 312 is set as a structure that is axially through at both ends to facilitate the shrinkage and reset of the elastic blocking member 311. Compared with the shrinkage cavity 312 being through at both ends in the radial direction, the axial through structure has another advantage that it will not damage the ring stiffness of the receiving pipe section 3. The through structure of the shrinkage cavity 312 can be integrally formed with the pipe material or formed by opening holes later.

[0034] In some embodiments, the contraction cavities 312 of the four elastic blocking members 311 respectively form openings toward the outer walls of the four corners of the limiting portion 31. The openings are reserved when the elastic blocking members 311 are integrally formed.

[0035] In some embodiments, the elastic blocking member 311 has a first inclined surface 313 on the side close to the port of the receiving pipe section 3, and the first inclined surface 313 is gradually inclined in a direction away from the port of the receiving pipe section 3 during the radial change process inwardly, and the clamping portion 21 has a second inclined surface 211 on the side close to the port of the plug-in pipe section 2, and the second inclined surface 211 is gradually inclined in a direction away from the port of the plug-in pipe section 2 during the radial change process outwardly. The first inclined surface 313 and the second inclined surface 211 are provided to facilitate the coordinated use of the clamping portion 21 and the elastic blocking member 311.

[0036] In some embodiments, the inner wall of the limiting portion 31 is further provided with a groove structure 314 for accommodating the clamping portion 21 , and the groove structure 314 is located on a side of the elastic blocking member 311 close to the square tube body 1 .

[0037] In some embodiments, the plug-in pipe section 2 further includes a protrusion 22 integrally connected to the clamping portion 21, the protrusion 22 is located on the side of the clamping portion 21 away from the square tube body 1, and a sealing ring 4 is fixedly arranged on the protrusion 22; the receiving pipe section 3 further includes a sealing connection portion 32 integrally connected to the limiting portion 31 for receiving the protrusion 22, the sealing connection portion 32 is located on the side of the limiting portion 31 close to the square tube body 1, and the shape of the sealing connection portion 32 is smaller than the shape of the limiting portion 31, and when the sealing connection portion 32 receives the protrusion 22 of the adjacent pipe, the sealing ring 4 connects the outer wall of the protrusion 22 and the inner wall of the sealing connection portion 32 in an extrusion sealing manner. The connection between the sealing ring 4 and the protrusion 22 can be a hot melt connection, a groove clamping or other connection structures.

[0038] In some embodiments, the inner and outer walls of the protruding portion 22 and the sealing connection portion 32 are both square or circular.

[0039] In some embodiments, the square tube body 1 is a corrugated tube with wave crests 11 and troughs arranged alternately, the wave crests 11 are square in shape, and the wave troughs 12 are circular in shape.

[0040] In some embodiments, the square tube body 1 is integrally formed with the plug-in tube section 2 and the receiving tube section 3 at both ends. As required, the square tube body 1 and the plug-in tube section 2 and the receiving tube section 3 can also be hot-melt connected later or fixed with a connection structure.

[0041] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0042] The terms "first," "second," "third," "fourth," etc., if any, are used to distinguish between similar objects and not necessarily to describe a particular sequence or order.

[0043] In the description of the embodiments of the present application, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of square tube, characterized by: It comprises a square tube body, and both ends of the square tube body are respectively fixedly provided with an inserting tube section and a receiving tube section; the receiving tube section can receive the inserting tube section, and the outer contour of the radial cross section at the maximum shape of the receiving tube section does not exceed the outer contour of the radial cross section at the maximum shape of the square tube body; The receiving tube section includes a limiting portion, and the plug-in tube section is provided with a clamping portion that can form a clamping connection with the limiting portion; the limiting portion includes an elastic blocking member that protrudes into the tube and can change radially, and when the plug-in tube section and the receiving tube section of the adjacent pipe are butt-jointed with each other, the elastic blocking member is squeezed by the clamping portion and radially contracts so that the clamping portion enters the clamping position of the elastic blocking member, and the elastic blocking member forms an axial contact limit with the clamping portion in a radially expanded manner.

2. A novel square tube according to claim 1, characterized in that: The limiting portion is where the maximum outer shape of the receiving pipe section is located. The shape of the outer wall and the inner wall of the limiting portion is a square structure with four corner arc transitions. The number of the elastic blocking members is four and they are arranged at the four corners of the limiting portion. The shape of the outer wall of the clamping portion is also a square structure with four corner arc transitions. The four corners of the clamping portion are respectively clamped with the four elastic blocking members of the adjacent pipe.

3. A novel square tube according to claim 2, characterized in that: The elastic blocking member is integrally connected with the limiting portion, and a contraction cavity is provided inside the elastic blocking member. When the elastic blocking member is radially compressed, it is deformed in a manner of contracting toward the contraction cavity.

4. A novel square tube according to claim 3, characterized in that: The shrinkage cavity is communicated with each other at two ends along the axial direction of the receiving pipe section.

5. A novel square tube according to claim 3, characterized in that: The contraction cavities of the four elastic blocking members respectively form openings toward the outer walls of the four corners of the limiting portion.

6. A novel square tube according to claim 1, characterized in that: The elastic blocking member has a first inclined surface on the side close to the port of the receiving tube section, and the first inclined surface is gradually inclined toward the direction away from the port of the receiving tube section during the radial change toward the inside of the tube. The clamping portion has a second inclined surface on the side close to the port of the plug-in tube section, and the second inclined surface is gradually inclined toward the direction away from the port of the plug-in tube section during the radial change outward.

7. A novel square tube according to claim 1, characterized in that: The inner wall of the limiting portion is further provided with a groove structure for accommodating the clamping portion, and the groove structure is located on a side of the elastic blocking member close to the square tube body.

8. A novel square tube according to claim 1, characterized in that: The plug-in tube section also includes a protruding portion integrally connected to the clamping portion, the protruding portion is located on a side of the clamping portion away from the square tube body, and a sealing ring is fixedly arranged on the protruding portion; the receiving tube section also includes a sealing connection portion integrally connected to the limiting portion for receiving the protruding portion, the sealing connection portion is located on a side of the limiting portion close to the square tube body, and the shape of the sealing connection portion is smaller than the shape of the limiting portion. When the sealing connection portion receives the protruding portion of an adjacent pipe, the sealing ring connects the outer wall of the protruding portion and the inner wall of the sealing connection portion in an extrusion sealing manner.

9. A novel square tube according to claim 8, characterized in that: The inner and outer walls of the raised portion and the sealing connection portion are both square or circular.

10. A novel square tube according to claim 1, characterized in that: The square tube body is a corrugated tube with wave crests and troughs arranged alternately, the shape of the wave crests is square, and the shape of the wave troughs is round.

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