An adjustable PVC wire threading fitting and its adjustment method

Abstract

The present invention discloses an adjustable PVC wire threading pipe fitting and its adjustment method, which relates to the technical field of PVC wire threading pipe fittings. In order to solve the problem that the existing PVC wire threading pipe fittings are generally made of all PVC materials, so that they do not have the function of adjusting the bending degree and can only be used in combination with pre-made bent pipes, thus bringing inconvenience to users. One end of the PVC wire threading pipe fitting body is provided with a front PVC wire threading pipe, the other end of the PVC wire threading pipe fitting body is provided with a rear PVC wire threading pipe, a metal bending hose is arranged between the adjacent front PVC wire threading pipe and the rear PVC wire threading pipe, pipe fitting combination mechanisms are arranged at positions of both ends of the metal bending hose close to the front PVC wire threading pipe and the rear PVC wire threading pipe, pipe fitting adjustment mechanisms are arranged on the outer walls of the front PVC wire threading pipe and the rear PVC wire threading pipe, a hose expansion joint is arranged on the outer wall of the metal bending hose, and a plurality of hose expansion joints are provided. Expansion joint docking rings are arranged between the adjacent hose expansion joints.

Description

Technical Field

[0001] The present invention relates to the technical field of PVC wire threading pipe fittings, and specifically to an adjustable bend PVC wire threading pipe fitting and its adjustment method. Background Technique

[0002] The full name of the wire threading pipe is "building insulation electrical conduit". Generally speaking, it is a white rigid PVC conduit, a pipe for anti-corrosion, anti-electric leakage and threading wires, and is divided into plastic wire threading pipes, stainless steel wire threading pipes, and carbon steel wire threading pipes.

[0003] However, the existing PVC wire threading pipe fittings are generally made of all PVC materials, making them not have the function of adjusting the bending degree, and can only be used in combination with pre-made bent pipes, thus bringing inconvenience to users; therefore, they do not meet the existing needs, and for this reason, we propose an adjustable bend PVC wire threading pipe fitting and its adjustment method. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustable bend PVC wire threading pipe fitting and its adjustment method to solve the problem that the existing PVC wire threading pipe fittings are generally made of all PVC materials, making them not have the function of adjusting the bending degree, and can only be used in combination with pre-made bent pipes, thus bringing inconvenience to users as mentioned in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An adjustable bend PVC wire threading pipe fitting, including a PVC wire threading pipe fitting body. One end of the PVC wire threading pipe fitting body is provided with a front PVC wire threading pipe, and the other end of the PVC wire threading pipe fitting body is provided with a rear PVC wire threading pipe. A metal bending hose is arranged between the adjacent front PVC wire threading pipe and the rear PVC wire threading pipe. Pipe fitting combination mechanisms are arranged at positions of both ends of the metal bending hose close to the front PVC wire threading pipe and the rear PVC wire threading pipe. Pipe fitting adjustment mechanisms are arranged on the outer walls of the front PVC wire threading pipe and the rear PVC wire threading pipe. A hose expansion joint is arranged on the outer wall of the metal bending hose, and a plurality of hose expansion joints are provided. Expansion joint docking rings are arranged between adjacent hose expansion joints.

[0006] Preferably, an adjustable collar is arranged on the outer wall of the pipe fitting adjustment mechanism. A pull rope installation mechanism is arranged on the outer wall of the adjustable collar, and a plurality of pull rope installation mechanisms are provided. A pull rope installation part is arranged above the pull rope installation mechanism, and the pull rope installation part and the pull rope installation mechanism are of an integral structure. A connection limiting pull rope is arranged between adjacent pull rope installation parts. A pull rope retracting and releasing limiting disk is arranged at the middle position of the connection limiting pull rope.

[0007] Preferably, a drawstring perforation is provided at the middle position of the outer wall of the drawstring mounting member. Threaded mounting members are provided on both sides of the drawstring mounting mechanism, and the drawstring mounting mechanism and the threaded mounting members are of an integral structure. Fixing screws are provided on the outer wall of the threaded mounting member, and a plurality of fixing screws are provided. The threaded mounting member is threadedly connected to the adjustable collar through the fixing screws.

[0008] Preferably, mounting and fixing members are provided on the outer wall of the hose expansion joint, and a plurality of mounting and fixing members are provided. A magnetic adsorption threaded surface is provided on the outer wall of the mounting and fixing member.

[0009] Preferably, a hose combination disk is provided at one end of the pipe fitting combination mechanism close to the metal flexible hose, and a wire conduit combination disk is provided at one end of the pipe fitting combination mechanism away from the metal flexible hose.

[0010] Preferably, an inlet / outlet through hole is provided at the middle position of the wire conduit combination disk. A sealing ring is provided on the outer wall of the inlet / outlet through hole, and mounting threads are provided on the inner wall of the inlet / outlet through hole. A protruding threaded pipe is provided at the middle position of the hose combination disk, and the protruding threaded pipe is threadedly connected to the inlet / outlet through hole through the mounting threads.

[0011] Preferably, alignment slots are provided around the inlet / outlet through hole, and six groups of alignment slots are provided. Auxiliary alignment rod slots are provided on both sides of the alignment slots. Alignment blocks are provided around the protruding threaded pipe, and the alignment blocks are snap-fitted with the alignment slots. Auxiliary alignment insertion rods are provided on both sides of the alignment blocks, and the auxiliary alignment insertion rods are snap-fitted with the auxiliary alignment rod slots.

[0012] Preferably, flange combination disks are provided on the outer walls of the wire conduit combination disk and the hose combination disk. Connecting screw holes are provided on the outer wall of the flange combination disk, and a plurality of connecting screw holes are provided.

[0013] Preferably, connecting channels are provided inside the front PVC wire conduit, the rear PVC wire conduit, and the metal flexible hose.

[0014] Preferably, an adjustment method for a PVC wire threading pipe fitting with adjustable bending degree includes the following steps:

[0015] Step 1: First, combine the wire conduit combination disk and the hose combination disk to form a pipe fitting combination mechanism. During the combination process, various installation and fixing methods can be adopted according to requirements. The threaded connection can be carried out by using the flange combination disk and the connecting screw holes, so that the protruding threaded pipe is inserted into the inlet / outlet through hole and rotationally connected with the mounting threads in a threaded manner, or the snap-fitting connection can be carried out by inserting the alignment block into the alignment slot. During the snap-fitting process, the auxiliary alignment rod slots and the auxiliary alignment insertion rods can be used to align the auxiliary alignment positions and snap-fit with each other;

[0016] Step 2: After installation and combination, use multiple hose expansion joints at the metal flexible hose to bend the pipe fittings. After bending, the magnetic adsorption thread surface at the installation fixing part can be used for threaded docking or magnetic adsorption fixation with other components to keep the change of the bending radian fixed.

[0017] Step 3: Move the adjustable collar to the required positions of the front PVC conduit and the rear PVC conduit, and pull the two end heads of the pull rope retraction limiting disc to pull out the connecting limiting pull rope. After being pulled out, the connecting limiting pull rope is fixed at the pull rope installation parts at the two conduits. Due to the action of the pull rope and the pull rope retraction limiting disc, the metal flexible hose can maintain the corresponding bending degree.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, multiple hose expansion joints at the metal flexible hose are used to bend the pipe fittings. After bending, the magnetic adsorption thread surface at the installation fixing part can be used for threaded docking or magnetic adsorption fixation with other components to keep the change of the bending radian fixed. Move the adjustable collar to the required positions of the front PVC conduit and the rear PVC conduit, and pull the two end heads of the pull rope retraction limiting disc to pull out the connecting limiting pull rope. After being pulled out, the connecting limiting pull rope is fixed at the pull rope installation parts at the two conduits. Due to the action of the pull rope and the pull rope retraction limiting disc, the metal flexible hose can maintain the corresponding bending degree. Through the above structure and steps, the present invention can effectively enable the PVC wire threading pipe fittings to have the function of adjustable bending degree, and the adjustment is reversible, capable of performing multiple adjustment operations in different directions. The adjustment is also very simple and convenient, with fewer combined parts required, and the combination will not affect the normal use of the PVC pipe, so that the PVC wire threading pipe fittings are more suitable for users.

[0020] 2. During the combination process, various installation and fixation methods can be adopted according to requirements. The method of using a flange combination disc and connecting screw holes can be selected for threaded connection, so that the convex threaded pipe is inserted into the inlet and outlet through holes for threaded rotation connection combination, or the method of inserting the alignment plug into the alignment slot can be adopted for snap connection. During the snap connection process, the auxiliary alignment rod groove and the auxiliary alignment plug can be used to align the auxiliary alignment positions and snap-connect with each other. Through the above structure, it is convenient for users to install and disassemble the PVC wire threading pipe fittings and the hose, and it is convenient for users to select different installation methods for installation combination, so that it can be adapted to more types of PVC wire threading pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structural schematic diagram of the present invention;

[0022] Figure 2 Schematic diagram of the local structure of the connection limiting pull rope of the present invention;

[0023] Figure 3 Schematic diagram of the local structure of the combination disk of the threading pipe of the present invention;

[0024] Figure 4 Schematic diagram of the local structure of the combination disk of the flexible hose of the present invention;

[0025] Figure 5 Schematic diagram of the local structure of the pull rope installation mechanism of the present invention;

[0026] In the figure: 1, PVC threading pipe fitting body; 2, front PVC threading pipe; 3, rear PVC threading pipe; 4, metal flexible hose; 5, pipe fitting combination mechanism; 6, pipe fitting adjustment mechanism; 7, flexible hose expansion joint; 8, expansion joint docking ring; 9, installation and fixing part; 10, adjustable collar; 11, pull rope installation mechanism; 12, pull rope installation part; 13, connection limiting pull rope; 14, pull rope winding and unwinding limiting disk; 15, threading pipe combination disk; 16, flexible hose combination disk; 17, flange combination disk; 18, connection screw hole; 19, alignment slot; 20, auxiliary alignment rod slot; 21, inlet and outlet through hole; 22, installation thread; 23, alignment plug; 24, auxiliary alignment plug rod; 25, convex threaded pipe; 26, sealing ring; 27, magnetic adsorption threaded surface; 28, pull rope perforation; 29, threaded installation part; 30, fixing screw; 31, connection channel. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] Please refer to Figures 1-5 , an embodiment provided by the present invention: an adjustable bend PVC threading pipe fitting, including a PVC threading pipe fitting body 1, a front PVC threading pipe 2 is arranged at one end of the PVC threading pipe fitting body 1, a rear PVC threading pipe 3 is arranged at the other end of the PVC threading pipe fitting body 1, a metal flexible hose 4 is arranged between the adjacent front PVC threading pipe 2 and the rear PVC threading pipe 3, pipe fitting combination mechanisms 5 are arranged at positions of both ends of the metal flexible hose 4 close to the front PVC threading pipe 2 and the rear PVC threading pipe 3, pipe fitting adjustment mechanisms 6 are arranged on the outer walls of the front PVC threading pipe 2 and the rear PVC threading pipe 3, a flexible hose expansion joint 7 is arranged on the outer wall of the metal flexible hose 4, and a plurality of flexible hose expansion joints 7 are arranged, and expansion joint docking rings 8 are arranged between the adjacent flexible hose expansion joints 7.

[0029] Further, an adjustable collar 10 is provided on the outer wall of the pipe fitting adjustment mechanism 6. A cable installation mechanism 11 is provided on the outer wall of the adjustable collar 10, and a plurality of cable installation mechanisms 11 are provided. Above the cable installation mechanism 11, a cable installation member 12 is provided, and the cable installation member 12 and the cable installation mechanism 11 are of an integral structure. A connecting and restricting cable 13 is provided between adjacent cable installation members 12, and a cable take-up and release restricting disc 14 is provided at the middle position of the connecting and restricting cable 13.

[0030] Further, a cable through hole 28 is provided at the middle position of the outer wall of the cable installation member 12. Threaded installation members 29 are provided on both sides of the cable installation mechanism 11, and the cable installation mechanism 11 and the threaded installation members 29 are of an integral structure. Fixing screws 30 are provided on the outer wall of the threaded installation members 29, and a plurality of fixing screws 30 are provided. The threaded installation members 29 are threadedly connected to the adjustable collar 10 through the fixing screws 30. The cable installation mechanism 11 and the cable installation member 12 are used to fix the cable. The cable through hole 28 is used for the cable to pass through. After the cable passes through, it can be knotted on the outer wall to complete the fixing operation at both ends. The threaded installation members 29 can be combined and fixed with the adjustable collar 10 by using the fixing screws 30, so that the position of the cable installation mechanism 11 can be adjusted according to user needs.

[0031] Further, installation and fixing members 9 are provided on the outer wall of the hose expansion joint 7, and a plurality of installation and fixing members 9 are provided. A magnetic adsorption threaded surface 27 is provided on the outer wall of the installation and fixing members 9, and the magnetic adsorption threaded surface 27 at the installation and fixing members 9 can be used for threaded docking or magnetic adsorption fixing with other components, so that the change in its bending arc remains fixed.

[0032] Further, a hose combination disc 16 is provided at one end of the pipe fitting combination mechanism 5 close to the metal flexible hose 4, and a conduit combination disc 15 is provided at the end of the pipe fitting combination mechanism 5 far from the metal flexible hose 4. The conduit combination disc 15 and the hose combination disc 16 are used to achieve the effect of combined installation, facilitating combined use by the user.

[0033] Further, an access through hole 21 is provided at the middle position of the conduit combination disc 15. A sealing ring 26 is provided on the outer wall of the access through hole 21, and installation threads 22 are provided on the inner wall of the access through hole 21. A protruding threaded pipe 25 is provided at the middle position of the hose combination disc 16, and the protruding threaded pipe 25 is threadedly connected to the access through hole 21 through the installation threads 22. By inserting the protruding threaded pipe 25 into the access through hole 21 and performing threaded rotation connection and combination with the installation threads 22, the two can be effectively fixed together.

[0034] Furthermore, alignment slots 19 are provided around the inlet and outlet through holes 21, and six groups of alignment slots 19 are provided, auxiliary alignment rod slots 20 are provided on both sides of the alignment slots 19, alignment blocks 23 are provided around the raised threaded tubes 25, and the alignment blocks 23 are snap-connected with the alignment slots 19, auxiliary alignment rods 24 are provided on both sides of the alignment blocks 23, and the auxiliary alignment rods 24 are snap-connected with the auxiliary alignment rod slots 20, and the alignment blocks 23 are inserted into the alignment slots 19 for snap-connection, and the auxiliary alignment rod slots 20 and the auxiliary alignment rods 24 can be used for auxiliary alignment positions during the snap-connection process, and they are snap-connected with each other, so that the combination of the two can be installed more tightly and the firmness is also improved.

[0035] Furthermore, the outer walls of the wire threading pipe assembly disk 15 and the hose assembly disk 16 are both provided with flange assembly disks 17, and the outer walls of the flange assembly disk 17 are provided with connecting screw holes 18, and there are multiple connecting screw holes 18. Threaded connection is performed by using the flange assembly disk 17 and the connecting screw holes 18, so that users can install and disassemble them conveniently and quickly.

[0036] Furthermore, the front PVC threading tube 2, the rear PVC threading tube 3 and the metal bending hose 4 are all provided with connecting channels 31 inside, and the connecting channels 31 are used for the required medium to pass through, so that the inside can achieve the effect of communication.

[0037] Furthermore, a method for adjusting a PVC threading pipe with adjustable curvature comprises the following steps:

[0038] Step 1: First, combine the threading tube assembly disk 15 and the hose assembly disk 16 together to form a pipe assembly mechanism 5. During the assembly process, various methods can be used for installation and fixing according to needs. The flange assembly disk 17 and the connecting screw hole 18 can be used for threaded connection, so that the raised threaded tube 25 is inserted into the inlet and outlet through hole 21 and combined with the installation thread 22 for threaded rotation connection, or the alignment plug block 23 is inserted into the alignment slot 19 for snap connection. During the snap connection process, the auxiliary alignment rod groove 20 and the auxiliary alignment plug rod 24 can be used to align the auxiliary position, and they can be snap-connected with each other;

[0039] Step 2: After the assembly is installed, the multiple hose expansion joints 7 at the metal bending hose 4 are used to bend the pipe fitting. After bending, the magnetic thread surface 27 at the mounting fixture 9 can be used to thread or magnetically fix other components to keep the bending curvature constant;

[0040] Step 3: Move the adjustable collar 10 to the required positions of the front PVC conduit 2 and the rear PVC conduit 3. Pull the two end heads of the pull rope retraction limiting disc 14 to pull out the connecting limiting pull rope 13. The pulled-out connecting limiting pull rope 13 is fixed at the pull rope mounting members 12 at the two conduits. Due to the action of the pull rope and the pull rope retraction limiting disc 14, the metal flexible hose 4 can maintain the corresponding degree of bending.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claim.

Claims

1. An adjustable bend PVC wire threading fitting, comprising a PVC wire threading fitting body (1). It is characterized in that: One end of the PVC wire threading fitting body (1) is provided with a front PVC wire pipe (2), the other end of the PVC wire threading fitting body (1) is provided with a rear PVC wire pipe (3), a metal flexible hose (4) is arranged between the adjacent front PVC wire pipe (2) and the rear PVC wire pipe (3), pipe fitting combination mechanisms (5) are arranged at positions of both ends of the metal flexible hose (4) close to the front PVC wire pipe (2) and the rear PVC wire pipe (3), pipe fitting adjusting mechanisms (6) are arranged on the outer walls of the front PVC wire pipe (2) and the rear PVC wire pipe (3), a hose expansion joint (7) is arranged on the outer wall of the metal flexible hose (4), and a plurality of hose expansion joints (7) are provided. Expansion joint docking rings (8) are arranged between adjacent hose expansion joints (7). Mounting and fixing parts (9) are arranged on the outer wall of the hose expansion joint (7), and a plurality of mounting and fixing parts (9) are provided. A magnetic adsorption thread surface (27) is arranged on the outer wall of the mounting and fixing part (9). A hose combination disc (16) is arranged at one end of the pipe fitting combination mechanism (5) close to the metal flexible hose (4). A wire pipe combination disc (15) is arranged at the end of the pipe fitting combination mechanism (5) far from the metal flexible hose (4). An access through hole (21) is arranged at the middle position of the wire pipe combination disc (15). A sealing ring (26) is arranged on the outer wall of the access through hole (21). Mounting threads (22) are arranged on the inner wall of the access through hole (21). A protruding threaded pipe (25) is arranged at the middle position of the hose combination disc (16), and the protruding threaded pipe (25) is in threaded connection with the access through hole (21) through the mounting threads (22). Alignment slot holes (19) are arranged around the access through hole (21), and six groups of alignment slot holes (19) are provided. Auxiliary alignment rod grooves (20) are arranged on both sides of the alignment slot hole (19). Alignment plug blocks (23) are arranged around the protruding threaded pipe (25), and the alignment plug blocks (23) are in snap connection with the alignment slot holes (19). Auxiliary alignment insertion rods (24) are arranged on both sides of the alignment plug block (23), and the auxiliary alignment insertion rods (24) are in snap connection with the auxiliary alignment rod grooves (20).

2. An adjustable bend PVC wire threading fitting according to claim 1, It is characterized in that: An adjustable sleeve ring (10) is arranged on the outer wall of the pipe fitting adjusting mechanism (6). A pull rope mounting mechanism (11) is arranged on the outer wall of the adjustable sleeve ring (10), and a plurality of pull rope mounting mechanisms (11) are provided. A pull rope mounting part (12) is arranged above the pull rope mounting mechanism (11), and the pull rope mounting part (12) and the pull rope mounting mechanism (11) are of an integral structure. A connection limiting pull rope (13) is arranged between adjacent pull rope mounting parts (12). A pull rope retracting and releasing limiting disc (14) is arranged at the middle position of the connection limiting pull rope (13).

3. An adjustable bend PVC wire threading fitting according to claim 2, characterized in that: A wire rope perforation (28) is provided at the middle position of the outer wall of the wire rope mounting member (12). Threaded mounting members (29) are provided on both sides of the wire rope mounting mechanism (11), and the wire rope mounting mechanism (11) and the threaded mounting member (29) are of an integral structure. A fixing screw (30) is provided on the outer wall of the threaded mounting member (29), and a plurality of fixing screws (30) are provided. The threaded mounting member (29) is threadedly connected to the adjustable collar (10) through the fixing screw (30).

4. An adjustable bend PVC wire threading fitting according to claim 1, characterized in that: Flange combination plates (17) are provided on the outer walls of the wire threading pipe combination plate (15) and the hose combination plate (16). Connecting screw holes (18) are provided on the outer wall of the flange combination plate (17), and a plurality of connecting screw holes (18) are provided.

5. An adjustable bend PVC wire threading fitting according to claim 1, characterized in that: Connection channels (31) are provided inside the front PVC wire threading pipe (2), the rear PVC wire threading pipe (3), and the metal flexible hose (4).

6. An adjustment method for an adjustable bend PVC wire threading fitting according to any one of claims 1-5, characterized in that it includes the following steps: Step 1: First, combine the wire threading pipe combination plate (15) and the hose combination plate (16) together to form a pipe fitting combination mechanism (5). During the combination process, select the method of the flange combination plate (17) and the connecting screw hole (18) for threaded connection, insert the protruding threaded pipe (25) into the inlet and outlet through hole (21) and perform threaded rotational connection combination with the installation thread (22), or use the method of inserting the alignment plug (23) into the alignment slot (19) for snap connection. During the snap connection process, use the auxiliary alignment rod groove (20) and the auxiliary alignment insertion rod (24) to align the auxiliary alignment position and snap connect with each other; Step 2: After the installation combination, use the multiple hose expansion joints (7) at the metal flexible hose (4) to bend the pipe fitting. After bending, use the magnetic adsorption thread surface (27) at the installation fixing member (9) to perform threaded docking or magnetic adsorption fixation with other components, so that the change in the bending arc is kept fixed; Step 3: Move the adjustable collar (10) to the required positions of the front PVC wire threading pipe (2) and the rear PVC wire threading pipe (3), pull the two end heads of the wire rope retraction limiting disc (14), so that the connection limiting wire rope (13) is pulled out. The pulled-out connection limiting wire rope (13) is fixed at the wire rope mounting member (12) at the two wire threading pipes. Due to the action of the wire rope and the wire rope retraction limiting disc (14), the metal flexible hose (4) can maintain the corresponding bending degree.

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