An electrical pre-embedded pipe connection device

Abstract

This utility model discloses an electrical pre-embedded pipe connection device, including a locking assembly: the locking assembly includes a locking ring, a conical sealing ring fixedly connected to the locking ring, a locking rod slidably connected to the locking ring, and a locking lever slidably connected to the locking ring, the locking rod being able to cooperate with the locking lever; a connection assembly: the connection assembly includes a connecting sleeve, at least two sets of wedge blocks are slidably connected to appropriate positions at both ends of the connecting sleeve, a sensing rod is slidably connected to the connecting sleeve, the sensing rod being able to clamp the wedge blocks onto the pre-embedded pipe when working, the connecting sleeve also having a conical cavity cooperating with the conical sealing ring, and an annular groove cooperating with the locking lever. This utility model can realize the rapid connection and assembly of electrical pre-embedded pipes, and is also easy to disassemble. Under the action of the wedge blocks, it can prevent the electrical pre-embedded pipes from falling off due to external forces later.

Description

Technical Field

[0001] This utility model relates to the field of electrical pre-embedded pipe technology, specifically to an electrical pre-embedded pipe connection device. Background Technology

[0002] Electrical embedded conduits are special conduits used in building electrical engineering to protect cable lines. Based on the material, they can be divided into two main categories: metal conduits (such as galvanized steel conduits and JDG conduits) and plastic conduits (such as PVC conduits). JDG conduits use a tight-fitting connection technology to achieve welding-free construction.

[0003] A search revealed that patent CN 222940491 U discloses a JDG conduit connection mechanism, including a heat-shrinkable sleeve and a locking mechanism. The heat-shrinkable sleeve has conduit interfaces on both sides, and a guide groove is provided on the inner side of the conduit interface. A self-locking pin and a spring mechanism are provided on the guide groove. The self-locking pin and the spring mechanism are connected. The locking mechanism is a buckle, and the buckle has a spring buckle and a locking buckle. The locking hook is locked onto the outer wall of the JDG conduit under the action of the spring buckle.

[0004] However, the above-mentioned device also has the following problems: if an installation error is found using heat shrink tubing, it is relatively troublesome to replace and it will cause material waste and make it difficult to correct. Furthermore, when the fixed JDG tube is poured concrete later, external forces such as vibration can easily cause the JDG tube to come out of the connection mechanism or cause the heat shrink tubing to crack, resulting in concrete intrusion at the connection point, which will hinder the subsequent threading. Utility Model Content

[0005] To address the problems of difficulty in quickly correcting installation errors and easy detachment under external forces in the existing technology, this utility model provides an electrical pre-embedded pipe connection device to solve the problems of difficulty in correcting installation errors and easy detachment under external forces.

[0006] The technical solution adopted by this utility model to solve its technical problem is: This utility model proposes an electrical pre-embedded pipe connection device, including a locking assembly: the locking assembly includes a locking ring, a conical sealing ring fixedly connected to the locking ring, a locking rod slidably connected to the locking ring, and a locking lever slidably connected to the locking ring, the locking rod being able to cooperate with the locking lever; a connection assembly: the connection assembly includes a connecting sleeve, at least two sets of wedge blocks are slidably connected to appropriate positions at both ends of the connecting sleeve, a sensing rod is slidably connected to the connecting sleeve, the sensing rod being able to clamp the wedge blocks onto the pre-embedded pipe when working, the connecting sleeve is also provided with a conical cavity cooperating with the conical sealing ring, and the connecting sleeve is also provided with an annular groove cooperating with the locking lever.

[0007] Preferably, the locking ring is slidably connected to the locking rod via a first spring, and the locking ring is slidably connected to the locking rod via a second spring. The locking rod has a locking hole that cooperates with the locking rod, and the locking rod sliding out of the locking hole allows the locking rod to slide into the ring groove.

[0008] Preferably, the locking ring is slidably connected to the slider via a first spring, and the locking rod is fixedly connected to the slider via an auxiliary rod. The slider can cooperate with the end face of the connecting sleeve, and the slider compressing the first spring can cause the locking rod to slide out of the locking hole.

[0009] Preferably, the connecting sleeve is slidably connected to the pressure block at a suitable position via a third spring, the pressure block is slidably connected to the wedge block, and the sliding surface of the pressure block and the wedge block is an inclined surface.

[0010] Preferably, the connecting sleeve is slidably connected to the intermediate rod at a suitable position via a fifth spring. The wedge block is provided with a slot that cooperates with the intermediate rod. The other end of the intermediate rod cooperates with the sensing rod. A fourth spring is provided between the sensing rod and the connecting sleeve. The elastic force of the fourth spring is greater than that of the fifth spring. When the sensing rod moves away from the center line, the intermediate rod moves out of the slot.

[0011] Preferably, the wedge block is connected to the sliding push rod via a sixth spring, and the end of the push rod away from the wedge block is in contact with the connecting sleeve.

[0012] Preferably, a sealing ring is fixed at a suitable position on the locking ring.

[0013] Preferably, an auxiliary sealing ring is fixed to the end face of the connecting sleeve that mates with the locking ring.

[0014] Preferably, the working surface of the wedge block is fixed with an anti-detachment layer, and the working surface of the anti-detachment layer is provided with protrusions.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. The locking ring is connected to a locking rod that slides on the locking ring, and a locking ring that matches the locking rod on the connecting sleeve. The locking ring is connected to the locking rod by a tapered cavity on the connecting sleeve. The tapered sealing ring of the locking ring is squeezed and deformed by the tapered cavity to completely wrap the electrical pre-embedded pipe. The deformation and squeezing force of the tapered sealing ring prevents detachment, thus realizing the quick connection of the electrical pre-embedded pipe and facilitating quick disassembly.

[0016] 2. Through the cooperation of the sensing rod and the intermediate rod, the wedge block is automatically clamped when the electrical pre-embedded pipe is installed in place. The wedge-shaped inclined surface is used to stretch the electrical pre-embedded pipe when it falls off due to external force in the later stage, so that the wedge block is pulled tighter and tighter to prevent it from falling off. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the assembly and connection of this utility model; Figure 2 This is a schematic diagram of the locking state of this utility model; Figure 3 This is a utility model Figure 1 Schematic diagram of section A---A; Figure 4 This is a utility model Figure 1 Enlarged view of point B in the middle; Figure 5 This is a utility model Figure 1 Enlarged view of point C in the middle; Figure 6 This is a utility model Figure 1 Enlarged diagram of point D in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Left tube; 2. Locking ring; 3. Sealing ring; 4. Conical sealing ring; 5. Conical cavity; 6. Locking rod; 7. Connecting sleeve; 8. Auxiliary sealing ring; 9. Pressure block; 10. Sensing rod; 11. Right tube; 12. Anti-detachment layer; 13. Wedge block; 14. Bayonet; 15. Intermediate rod; 16. Locking hole; 17. Locking rod; 18. Sliding block; 19. Ring groove; 20. Top rod. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example 1: like Figure 1 - Figure 6 As shown, this embodiment proposes an electrical pre-embedded pipe connection device, including a connecting sleeve 7. The connecting sleeve 7 has a positioning ring-shaped step in the middle, which is used for positioning during the connection and installation of the electrical pre-embedded pipe and also allows the electrical wires to pass through smoothly later. The two ends of the connecting sleeve 7 are respectively machined with tapered cavities 5, and the two ends of the connecting sleeve 7 are respectively machined with ring grooves 19 at appropriate positions in the direction perpendicular to the central axis.

[0021] As attached Figure 1 Appendix Figure 2 As shown, the electrical pre-embedded pipes to be connected are divided into left pipe 1 and right pipe 11. The left side of the connecting sleeve 7 is connected to the left pipe 1, and the right side is connected to the right pipe 11.

[0022] The left tube 1 and the right tube 11 are respectively pre-fitted with locking rings 2, which can cooperate with the connecting sleeve 7. A conical sealing ring 4 that can cooperate with the conical cavity 5 is fixedly connected to the appropriate position of the locking ring 2. The conical sealing ring 4 is made of soft sealing material. The appropriate position of the locking ring 2 is slidably connected to the slider 18 through the first spring. One end of the first spring is connected to the locking ring 2, and the other end of the first spring is connected to the slider 18. A locking rod 17 parallel to the slider 18 is set at the appropriate position of the locking ring 2. The locking rod 17 is fixedly connected to the slider 18 through the auxiliary rod. The locking ring 2 is slidably connected to the locking rod 6 through the second spring. One end of the second spring is connected to the locking rod 6, and the other end of the second spring is connected to the locking ring 2. The locking rod 6 moves perpendicular to the central axis of the locking ring 2. The locking rod 6 has a locking hole 16 that cooperates with the locking rod 17. The slider 18 can cooperate with the end face of the connecting sleeve 7.

[0023] Specifically, the conical sealing ring 4 can be made of rubber, silicone, or other soft materials that can seal, and is a mature product on the market.

[0024] Specifically, when the locking ring 2 moves towards the connecting sleeve 7, the conical sealing ring 4 enters the conical cavity 5 and deforms under the constraint of the conical cavity 5, forming a clamp on the electrical pre-embedded pipe to prevent it from detaching from the connecting sleeve 7. The cooperation between the conical sealing ring 4 and the conical cavity 5 can also prevent liquid or foreign objects from entering the connecting sleeve 7. When the locking ring 2 moves towards the connecting sleeve 7, under the action of the resistance at the end face of the connecting sleeve 7, the slider 18 compresses the first spring, which can cause the locking rod 17 to slide out of the locking hole 16 and the locking rod 6 to slide into the ring groove 19, thereby realizing the connection between the locking ring 2 and the connecting sleeve 7, and thus realizing the connection between the left pipe 1 or the right pipe 11 and the connecting sleeve 7. At this time, under the action of the first spring force, the slider 18 keeps in contact with the connecting sleeve 7, and under the action of the ring groove 19, the locking ring 2 keeps connected to the connecting sleeve 7.

[0025] Furthermore, the connecting sleeve 7 has a circumferential surface of the annular groove 19 that engages with the locking ring 2. The threaded connection enables a double anti-reverse locking mechanism that combines the threaded connection and the engagement of the locking rod 6 with the annular groove 19. The addition of the thread also constrains and fixes the rotation of the locking ring 2, preventing damage to the conical sealing ring 4 and further increasing the stability and strength of the connection.

[0026] Furthermore, a sealing ring 3 is fixed at a suitable position on the locking ring 2, which can further enhance the seal and prevent liquid or foreign matter from entering the connecting sleeve 7.

[0027] Furthermore, an auxiliary sealing ring 8 is fixed to the end face of the connecting sleeve 7 that mates with the locking ring 2, which can further enhance the seal and prevent liquid or foreign matter from entering the connecting sleeve 7.

[0028] Furthermore, to better prevent external forces from causing the electrical pre-embedded pipe to detach from the connecting sleeve 7, at least two sets of pressure blocks 9 are slidably connected to appropriate positions at both ends of the connecting sleeve 7 via a third spring. One end of the third spring is connected to the pressure block 9, and the other end of the third spring is connected to the connecting sleeve 7. The third spring can move the pressure block 9 towards the central axis of the connecting sleeve 7. The lower end of the pressure block 9 is slidably connected to the wedge block 13. The sliding surface between the pressure block 9 and the wedge block 13 is an inclined surface. The wedge block 13 is slidably connected to the top rod 20 via a sixth spring. One end of the sixth spring is connected to the wedge block 13, and the other end of the sixth spring is connected to the top rod 20. The end of the top rod 20 away from the wedge block 13 is in line contact with the connecting sleeve 7. The elastic force of the sixth spring only provides the wedge block 13 with the reset force when it moves away from the central axis of the connecting sleeve 7.

[0029] Furthermore, the sliding connection between the pressure block 9 and the wedge block 13 can be achieved by using a dovetail groove or T-groove structure, which is an existing technology.

[0030] Specifically, the left tube 1 and the right tube 11 are inserted into the connecting sleeve 7 in sequence, so that the wedge block 13 holds the inserted electrical pre-embedded tube left tube 1 or right tube 11 under the action of the third spring. Then, the locking ring 2 is connected to the connecting sleeve 7 to realize the connection and fixation of the electrical pre-embedded tube. When the external force causes the electrical pre-embedded tube to overcome the constraint force of the conical sealing ring and move away from the connecting sleeve 7, the wedge block 13 of the electrical pre-embedded tube sliding band slides. Under the cooperation of the inclined surface of the pressure block 8, the wedge block 13 moves towards the central axis of the connecting sleeve 7 while moving, thereby clamping the electrical pre-embedded tube and preventing it from falling out of the connecting sleeve 7.

[0031] Furthermore, the appropriate position of the connecting sleeve 7 is slidably connected to the sensing rod 10 via the fourth spring. One end of the fourth spring is connected to the sensing rod 10, and the other end of the fourth spring is connected to the connecting sleeve 7. When the sensing rod 10 moves away from the central axis of the connecting sleeve 7, the fourth spring is compressed. The appropriate position of the connecting sleeve 7 is slidably connected to the intermediate rod 15 via the fifth spring. One end of the fifth spring is connected to the intermediate rod 15, and the other end of the fifth spring is connected to the connecting sleeve 7. The wedge block 13 is provided with a slot 14 that cooperates with the intermediate rod 15. The other end of the intermediate rod 15 cooperates with the sensing rod 10. The elastic force of the fourth spring is greater than that of the fifth spring. When the left tube 1 or the right tube 11 is placed in the connecting sleeve 7, the sensing rod 10 moves away from the central axis of the connecting sleeve 7. At this time, the intermediate rod 15 moves out of the slot 14, and the wedge block 13 clamps the electrical pre-embedded pipe under the action of the third spring.

[0032] Furthermore, the working surface of the wedge block 13 is fixed with an anti-slip layer 12. The anti-slip layer 12 is made of rubber or other materials with anti-slip properties, all of which are mature products on the market.

[0033] Furthermore, the working surface of the anti-detachment layer 12 is provided with protrusions, which can further enhance the clamping of the electrical pre-embedded pipe and prevent detachment.

[0034] Furthermore, the protrusion can be oriented to one side, opposite to the direction of movement when the electrical pre-embedded pipe is detached, further enhancing the clamping of the electrical pre-embedded pipe and preventing detachment.

[0035] Furthermore, during disassembly, first pull the locking rod 6 to separate the locking ring 2 from the connecting sleeve 7. After the locking ring 2 is separated, the locking rod 17 slides back into the locking hole 16 to reset the locking ring 2. Then pull the pressure block 9 to move the wedge block 13 away from the central axis of the connecting sleeve 7. Under the action of the top rod 20, the wedge block 13 is reset. At this time, the clamping force of the electrical pre-embedded pipe disappears, and the electrical pre-embedded pipe can be separated. After the electrical pre-embedded pipe is pulled out, the constraint force of the sensing rod 10 disappears and moves downward under the action of the fourth spring. The lower end of the sensing rod 10 is an inclined surface, which can force the intermediate rod 15 to slide into the locking slot 14, so that the wedge block 13 is reset.

[0036] Working principle and usage process of this utility model: S1: The electrical pre-embedded pipe is divided into left pipe 1 and right pipe 11, and locking rings 2 are pre-installed on left pipe 1 and right pipe 11 respectively.

[0037] S2: The left tube 1 and the right tube 11 are inserted into the connecting sleeve 7 in sequence and are in place. The sensing rod 10 moves away from the central axis of the connecting sleeve 7, so that the middle rod 15 moves out of the bayonet 14. The wedge block 13 clamps the electrical pre-embedded pipe under the action of the third spring.

[0038] S3: Move the locking ring 2 toward the connecting sleeve 7, and the conical sealing ring 4 enters the conical cavity 5. It is constrained by the conical cavity 5 and deforms to form a clamp on the electrical pre-embedded pipe. The compression of the first spring by the slider 8 allows the locking rod 17 to slide out of the locking hole 16, and the locking rod 6 to slide into the ring groove 19, thereby connecting the locking ring 2 and the connecting sleeve 7.

[0039] S4: When disassembling, first pull the locking rod 6 to separate the locking ring 2 from the connecting sleeve 7; Pull the pressure block 9 to move the wedge block 13 away from the central axis of the connecting sleeve 7, thus completing the separation of the electrical pre-embedded pipe.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrical pre-embedded conduit connection device, characterized in that, include: Locking assembly: The locking assembly includes a locking ring (2), the locking ring (2) is fixedly connected to a conical sealing ring (4), the locking ring (2) is slidably connected to a locking rod (17), the locking ring (2) is slidably connected to a locking bar (6), and the locking rod (17) can cooperate with the locking bar (6); Connection component: The connection component includes a connecting sleeve (7), at least two sets of wedge blocks (13) are slidably connected to appropriate positions at both ends of the connecting sleeve (7), a sensing rod (10) is slidably connected to the connecting sleeve (7), the sensing rod (10) can clamp the wedge blocks (13) to the pre-embedded pipe when the sensing rod (10) is working, the connecting sleeve (7) is also provided with a conical cavity (5) that cooperates with the conical sealing ring (4), and the connecting sleeve (7) is also provided with an annular groove (19) that cooperates with the locking rod (6).

2. The electrical pre-embedded pipe connection device according to claim 1, characterized in that: The locking ring (2) is slidably connected to the latch rod (17) by a first spring, and the locking ring (2) is slidably connected to the locking rod (6) by a second spring. The locking rod (6) has a latch hole (16) that cooperates with the latch rod (17). When the latch rod (17) slides out of the latch hole (16), the locking rod (6) can slide into the ring groove (19).

3. The electrical pre-embedded pipe connection device according to claim 2, characterized in that: The locking ring (2) is slidably connected to the slider (18) via the first spring. The locking rod (17) is fixedly connected to the slider (18) via the auxiliary rod. The slider (18) can cooperate with the end face of the connecting sleeve (7). When the slider (18) compresses the first spring, the locking rod (17) can slide out of the locking hole (16).

4. The electrical pre-embedded pipe connection device according to claim 1, characterized in that: The connecting sleeve (7) is slidably connected to the pressure block (9) at a suitable position via a third spring. The pressure block (9) is slidably connected to the wedge block (13). The sliding surface of the pressure block (9) and the wedge block (13) is an inclined surface.

5. The electrical pre-embedded pipe connection device according to claim 4, characterized in that: The connecting sleeve (7) is slidably connected to the intermediate rod (15) at a suitable position via the fifth spring. The wedge block (13) is provided with a slot (14) that cooperates with the intermediate rod (15). The other end of the intermediate rod (15) cooperates with the sensing rod (10). A fourth spring is provided between the sensing rod (10) and the connecting sleeve (7). The elastic force of the fourth spring is greater than that of the fifth spring. When the sensing rod (10) moves away from the center line, the intermediate rod (15) moves out of the slot (14).

6. The electrical pre-embedded pipe connection device according to claim 4, characterized in that: The wedge block (13) slides through the sixth spring to connect the push rod (20), and the end of the push rod (20) away from the wedge block (13) is in line contact with the connecting sleeve (7).

7. The electrical pre-embedded pipe connection device according to claim 1, characterized in that: A sealing ring (3) is fixed at a suitable position on the locking ring (2).

8. The electrical pre-embedded pipe connection device according to claim 1, characterized in that: An auxiliary sealing ring (8) is fixed on the end face of the connecting sleeve (7) that mates with the locking ring (2).

9. The electrical pre-embedded pipe connection device according to claim 1, characterized in that: The working surface of the wedge block (13) is fixed with an anti-detachment layer (12), and the working surface of the anti-detachment layer (12) is provided with protrusions.

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