Reducing Z-shaped bent pipe and connecting structure thereof

Abstract

The utility model discloses a reducing Z-shaped elbow pipe and a connecting structure thereof, which comprise a first interface pipe section, a connecting pipe section and a second interface pipe section which are sequentially connected into a Z shape, the first interface pipe section is communicated with the connecting pipe section in an obtuse angle or similar obtuse angle shape, the connecting pipe section is communicated with the second interface pipe section in an obtuse angle or similar obtuse angle shape, and the first interface pipe section is communicated with the second interface pipe section in an obtuse angle or similar obtuse angle shape. The outer wall of the first connector pipe section protrudes to form a stopping part, the maximum outer diameter of the first connector pipe section is equal to the maximum inner diameter of the second connector pipe section, and the outer diameter of the opening end of the second connector pipe section is smaller than or equal to the diameter of a circle formed by the radial outer side edge of the stopping part. According to the utility model, the problem of stress deformation whitening caused by the bending of the wire pipe in the prior art is solved, the service life and the installation efficiency of the wire pipe are improved, two wire pipes can be combined for use or used as a single fitting, and the wire pipe is suitable for various installation environments and meets different requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic wire pipes, and more specifically, to a different-diameter Z-shaped elbow pipe and a connection structure thereof. Background Art

[0002] In the prior art, to adapt to corner environments, plastic wire conduits need to be bent during installation to achieve cornering and cross-routing. This not only affects installation efficiency, but also causes stress deformation when the wire conduits are bent, resulting in stress whitening, affecting the strength and quality of the wire conduits. Existing wire conduit accessories can only solve one problem. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a different-diameter Z-shaped bend pipe and its connection structure, which solves the problem of stress deformation and whitening caused by bending of wire pipes in the prior art, improves the service life and installation efficiency of wire pipes, and can be applied to a variety of installation environments to meet different needs.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A Z-shaped elbow with a different diameter comprises a first interface pipe section, a connecting pipe section and a second interface pipe section connected in sequence into a Z shape, the first interface pipe section and the connecting pipe section being connected at an obtuse angle or a quasi-obtuse angle, the connecting pipe section and the second interface pipe section being connected at an obtuse angle or a quasi-obtuse angle, a protrusion on the outer wall of the first interface pipe section forming a stop portion, the maximum outer diameter of the first interface pipe section being equal to the maximum inner diameter of the second interface pipe section, and the outer diameter of the open end of the second interface pipe section being less than or equal to the diameter of a circle formed by the radial outer edge of the stop portion.

[0006] Furthermore, the stop portion is an annular convex ring or circumferentially distributed convex blocks.

[0007] Furthermore, the connecting pipe section is a straight pipe or a curved pipe structure.

[0008] Furthermore, the first interface pipe section includes a straight pipe portion A, a flared portion A and a straight pipe portion B, the small end of the flared portion A is connected to the straight pipe portion A, the large end of the flared portion A is connected to the straight pipe portion B, and the straight pipe portion B is connected to the connecting pipe section.

[0009] Furthermore, the stop portion is provided on the B straight tube portion.

[0010] Furthermore, the second interface pipe section includes a C-flared portion and a C-straight pipe portion, the small end of the C-flared portion is connected to the connecting pipe section, and the large end of the C-flared portion is connected to the C-straight pipe portion.

[0011] A connection structure of a reducing Z-shaped bend pipe comprises two reducing Z-shaped bend pipes as described above plugged in at any angle, wherein the first interface pipe section of the first reducing Z-shaped bend pipe and the second interface pipe section of the second reducing Z-shaped bend pipe are nested and plugged in.

[0012] Furthermore, the end surface of the second interface pipe section of the second reducing Z-shaped bend pipe abuts against the stopper of the first reducing Z-shaped bend pipe.

[0013] Furthermore, the connecting pipe sections of the two different-diameter Z-shaped elbows are parallel on the same plane or distributed in an angular manner on the same plane.

[0014] A connection structure for a reducing Z-shaped bend pipe comprises a first connecting pipe, a second connecting pipe and the reducing Z-shaped bend pipe as described above, wherein the first interface pipe section of the reducing Z-shaped bend pipe is nested and plugged into the first connecting pipe inside and outside, and the second connecting pipe is nested and plugged into the second interface pipe section of the reducing Z-shaped bend pipe inside and outside.

[0015] The beneficial effects of the utility model are:

[0016] The structural design of the different-diameter Z-shaped elbow changes the installation method of the wire pipe, solves the problem of stress deformation and whitening caused by bending of the wire pipe, increases the service life of the wire pipe, and improves the installation efficiency. The different-diameter Z-shaped elbow can be used in combination of two or as a single accessory, which can be applied to a variety of installation environments to meet different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a reducing Z-shaped elbow according to Example 1;

[0018] Figure 2 A schematic diagram of the structure of the two Z-shaped elbows of different diameters plugged together in Example 1;

[0019] Figure 3 This is another structural schematic diagram of the plug-in assembly of two Z-shaped elbows of different diameters in Example 1;

[0020] Figure 4 This is a schematic diagram of the structure of the plug-in assembly of the different-diameter Z-shaped elbow and other wiring pipes in Example 1;

[0021] Figure 5 This is a schematic structural diagram of a reducing Z-shaped elbow according to Example 2;

[0022] Figure 6 A schematic diagram of the structure of the two Z-shaped elbows of different diameters plugged together in Example 2;

[0023] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0024] Figure 8 Schematic diagram of the structure of the screw in Example 2.

[0025] Figure 9 This is another structural schematic diagram of the plug-in assembly of two Z-shaped elbows of different diameters in Example 2;

[0026] Figure numerals: first interface pipe section 1, A straight pipe portion 11, A flared portion 12, B straight pipe portion 13, stop portion 14, screw column 15, connecting pipe section 2, second interface pipe section 3, C flared portion 31, C straight pipe portion 32, mounting ring portion 33, A ring portion 331, B ring portion 332, C ring portion 333, D ring portion 334, notch 335, through hole 336, first wiring tube 4, second wiring tube 5, screw 6, head 61, rod portion 62, groove 63. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 As shown, a Z-shaped elbow pipe of different diameters includes a first interface pipe section 1, a connecting pipe section 2, and a second interface pipe section 3, which are sequentially connected to form a Z shape. The first interface pipe section 1 is connected to the connecting pipe section 2 at an obtuse angle or a quasi-obtuse angle, and the connecting pipe section 2 is connected to the second interface pipe section 3 at an obtuse angle or a quasi-obtuse angle. Specifically, the connecting pipe section 2 is a straight pipe or a curved pipe structure, preferably a curved pipe structure, and more preferably a Z-shaped or S-shaped structure. The first interface pipe section 1 includes a straight pipe portion A 11, a flared portion A 12, and a straight pipe portion B 13. The small end of the flared portion A 12 is connected to the straight pipe portion A 11, and the large end of the flared portion A 12 is connected to the straight pipe portion B 13, which is connected to the connecting pipe section 2. The second interface pipe section 3 includes a flared portion C 31 and a straight pipe portion C 32. The small end of the flared portion C 31 is connected to the connecting pipe section 2, and the large end of the flared portion C 31 is connected to the straight pipe portion C 32.

[0030] The outer wall of the first interface pipe section 1 is raised to form a stopper 14. This stopper 14 is actually located on the straight pipe section B 13. This stopper 14 is an annular raised ring or circumferentially distributed bumps, acting as a stopper during plug-in connection. The maximum outer diameter of the first interface pipe section 1 is equal to the maximum inner diameter of the second interface pipe section 3. This means the outer diameter of the straight pipe section B 13 is equal to the inner diameter of the straight pipe section C 32. The outer diameter of the open end of the second interface pipe section 3 is less than or equal to the diameter of the circle formed by the radially outer edges of the stopper 14. This means the outer diameter of the straight pipe section C 32 is less than or equal to the diameter of the circle formed by the radially outer edges of the stopper 14.

[0031] In this embodiment, the Z-shaped elbows of different diameters can be connected in two groups. By adjusting the angle between the two Z-shaped elbows of different diameters (the two Z-shaped elbows of different diameters are in the same plane or respectively in two intersecting planes), a bridge bend assembly is formed to achieve bending and differential routing in different spaces; it can also be used as a separate accessory and connected to the wiring pipe.

[0032] When two different-diameter Z-bends are assembled to form a bridge bend assembly, the connection structure of the different-diameter Z-bends includes two different-diameter Z-bends as described above that are plugged in at any angle, the first interface pipe section 1 of the first different-diameter Z-bend and the second interface pipe section 3 of the second different-diameter Z-bend being nested and plugged in; the end face of the second interface pipe section 3 of the second different-diameter Z-bend abuts against the stopper 14 of the first different-diameter Z-bend. Preferably, the connecting pipe sections 2 of the two different-diameter Z-bends are parallel on the same plane or distributed at an angle on the same plane; when the two connecting pipe sections 2 are parallel on the same plane, the two different-diameter Z-bends form a stepped bridge bend assembly, such as Figure 2 When the two connecting pipe sections 2 are distributed in an angular manner on the same plane, the two different diameter Z-shaped bends form another bridge bend component, such as Figure 3 shown.

[0033] like Figure 4 As shown, when the reducing Z-shaped bend is used as a separate accessory, the connection structure of the reducing Z-shaped bend includes a first wiring tube 4, a second wiring tube 5 and the reducing Z-shaped bend as described above, the first interface pipe section 1 of the reducing Z-shaped bend is nested and plugged into the first wiring tube 4 inside and outside, and the second wiring tube 5 is nested and plugged into the second interface pipe section 3 of the reducing Z-shaped bend inside and outside.

[0034] Specifically, the first wiring tube 4 and the A straight tube portion 11 are nested and plugged in, and the A flared portion 12 has a plug-in limiting function for the first wiring tube 4. The second wiring tube 5 and the C straight tube portion 32 are nested and plugged in, and the C flared portion 31 has a plug-in limiting function for the second wiring tube 5.

[0035] Example 2

[0036] like Figure 5-Figure 8 As shown, the reducing Z-type elbow of this embodiment is improved on the basis of the reducing Z-type elbow described in Example 1. In addition to the structure described in Example 1, the reducing Z-type elbow of this embodiment also includes at least two screw columns 15 arranged on the stopper 14 and a mounting ring portion 33 arranged on the outer wall of the C straight tube portion 32. At least two of the screw columns 15 are circumferentially distributed, and each screw column 15 is axially extended. The mounting ring portion 33 includes an annular A ring portion 331 formed by the outer wall protrusion of the C straight tube portion 32, The outer end of the A ring portion 331 is bent to form an axially extending B ring portion 332, the end of the B ring portion 332 extends radially inward to form an annular C ring portion 333, and the outer wall of the C straight tube portion 32 forms an annular D ring portion 334. The A ring portion 331, B ring portion 332, and C ring portion 333 are connected to form a structure with a hook-shaped cross section. The D ring portion 334 is disc-shaped and is spaced apart from the C ring portion 333. An annular notch 335 is formed between the D ring portion 334 and the C ring portion 333. The A ring portion 331 is formed with at least two through holes 336.

[0037] like Figure 6-Figure 9As shown, when two different-diameter Z-shaped bends are assembled to form a bridge bend assembly, the connection structure of the different-diameter Z-shaped bends includes two different-diameter Z-shaped bends as described above that are plugged in at any angle, and the first interface pipe section 1 of the first different-diameter Z-shaped bend and the second interface pipe section 3 of the second different-diameter Z-shaped bend are nested and plugged in inside and outside; the end face of the second interface pipe section 3 of the second different-diameter Z-shaped bend abuts the stopper 14 of the first different-diameter Z-shaped bend, and the mounting ring 33 is connected to the screw column 15 through the screw 6, that is, at least two screws 6 are axially limited and penetrated on the mounting ring 33, and the screw 6 passes through the notch 335 and is screwed in one-to-one correspondence with the screw 6. Specifically, the screw 6 includes a cylindrical head 61 and a cylindrical shaft 62 connected to each other. The outer diameter of the head 61 is larger than the outer diameter of the shaft 62, and the outer diameter of the head 61 is larger than the radial width of the notch 335. A groove 63 is defined within the shaft 62. The shaft 62 passes through the notch 335, and the screw column 15 extends into the groove 63 and is threadedly engaged with the groove 63. The through hole 336 has a larger diameter than the head 61. After the two Z-bends are connected, the entire screw 6 can pass through the through-hole 336, and then the rod 62 can pass through the notch 335 and be screwed into the screw column 15. (Due to the annular arrangement of the notch 335, the screw 6 can slide circumferentially along the notch 335. Therefore, the two Z-bends can be assembled at any angle and the screw 6 and the screw column 15 can be tightened together. If the conventional method of setting a bump on the two Z-bends is adopted and they are directly connected in series via a screw and nut, the two holes for the screws to pass through on the two Z-bends must be aligned, which limits the angle of connection between the two Z-bends.) The C ring portion 333 and the D ring portion 334 have a limiting effect on the head portion 61. When the mounting ring portion 33 is screwed to the screw column 15, the connection between the two Z-bends is more stable and rotation between them will not occur.

[0038] Preferably, the connecting pipe sections 2 of the two different diameter Z-shaped bends are parallel on the same plane or distributed in an angular shape on the same plane; when the two connecting pipe sections 2 are parallel on the same plane, the two different diameter Z-shaped bends form a stepped bridge bend assembly, such as Figure 6-Figure 7 When the two connecting pipe sections 2 are distributed in an angular manner on the same plane, the two different diameter Z-shaped bends form another bridge bend component, such as Figure 9 shown.

[0039] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A Z-shaped elbow pipe with a different diameter, comprising a first interface pipe section (1), a connecting pipe section (2) and a second interface pipe section (3) connected in sequence to form a Z shape, characterized in that: The first interface pipe section (1) is connected to the connecting pipe section (2) at an obtuse angle or a quasi-obtuse angle, and the connecting pipe section (2) is connected to the second interface pipe section (3) at an obtuse angle or a quasi-obtuse angle. The outer wall of the first interface pipe section (1) is raised to form a stopper (14). The maximum outer diameter of the first interface pipe section (1) is equal to the maximum inner diameter of the second interface pipe section (3). The outer diameter of the open end of the second interface pipe section (3) is less than or equal to the diameter of a circle formed by the radial outer edge of the stopper (14).

2. A reducing Z-shaped elbow according to claim 1, characterized in that: The stopper (14) is an annular convex ring or circumferentially distributed convex blocks.

3. The reducing Z-shaped elbow according to claim 1, characterized in that: The connecting pipe section (2) is a straight pipe or a curved pipe structure.

4. The reducing Z-shaped elbow according to claim 1, characterized in that: The first interface pipe section (1) comprises a straight pipe portion A (11), an expanded portion A (12) and a straight pipe portion B (13); the small end of the expanded portion A (12) is connected to the straight pipe portion A (11); the large end of the expanded portion A (12) is connected to the straight pipe portion B (13); and the straight pipe portion B (13) is connected to the connecting pipe section (2).

5. The reducing Z-shaped elbow according to claim 4, characterized in that: The stopper (14) is provided on the B straight pipe portion (13).

6. The reducing Z-shaped elbow according to claim 1, characterized in that: The second interface pipe section (3) comprises a C-flared portion (31) and a C-straight pipe portion (32); the small end of the C-flared portion (31) is connected to the connecting pipe section (2), and the large end of the C-flared portion (31) is connected to the C-straight pipe portion (32).

7. A connecting structure of a Z-shaped pipe with different diameters, comprising two Z-shaped pipes with different diameters as described in any one of claims 1 to 6 connected at any angle, characterized in that: The first interface pipe section (1) of the first reducing Z-shaped bend pipe and the second interface pipe section (3) of the second reducing Z-shaped bend pipe are nested and plugged in.

8. The connection structure of the different-diameter Z-shaped elbow pipe according to claim 7, characterized in that: The end face of the second interface pipe section (3) of the second different-diameter Z-shaped bend pipe abuts against the stopper (14) of the first different-diameter Z-shaped bend pipe.

9. The connection structure of the different-diameter Z-shaped elbow pipe according to claim 7, characterized in that: The connecting pipe sections (2) of the two different-diameter Z-shaped elbows are in a parallel state on the same plane or are distributed in an angular shape on the same plane.

10. A connection structure of a Z-shaped elbow with a different diameter, comprising a first connecting tube (4), a second connecting tube (5) and the Z-shaped elbow with a different diameter according to any one of claims 1 to 6, characterized in that: The first interface pipe section (1) of the different-diameter Z-shaped bend pipe is inserted and connected to the first wiring pipe (4) in an internal and external manner, and the second wiring pipe (5) is inserted and connected to the second interface pipe section (3) of the different-diameter Z-shaped bend pipe in an internal and external manner.

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