PVC cable protection connection structure

Abstract

The utility model discloses a PVC cable protection connection structure, and relates to the technical field of cable connection structures. The top of the lower protection shell is concaved downwards to form a fixing clamping groove, a threaded ring is arranged at the upper end of the lower protection shell, the top of the fixing ring is fixedly connected with a telescopic spring, the outer portion of the threaded ring is rotationally connected with a sealing buckle, and the lower portion of the upper protection shell protrudes outwards to form a locking clamping block. The upper protection shell is clamped in a downwards-sunken fixing clamping groove in the top of the lower protection shell through a locking clamping block, and due to the elastic effect of a telescopic spring arranged in the lower protection shell, upward extrusion acting force is applied to the upper protection shell, so that the upper protection shell can be fixed in the lower protection shell; and then the sealing buckle is screwed outside the threaded ring to reinforce the joint between the lower protective shell and the upper protective shell, so that the problems that when the nuts are used for connecting the PVC cable, the time is consumed for installing a plurality of nuts, and the nuts are loosened after being used for a too long time after being installed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable connection structures, in particular to a PVC cable protection connection structure. Background Art

[0002] PVC is the most common insulating material for wires and cables. Its advantages are low price, simple process, light weight, good electrical properties, corrosion resistance, stable chemical properties, moisture resistance, and non-flammability. Therefore, PVC insulation and sheath materials are widely used in weak current cables. Most of the existing PVC cable connection protection structures are composed of multiple fixed nuts, and the sealing of the protective cover after connection is poor, and the installation is more complicated. When encountering rainy weather outdoors, the sealing problem of the protective cover may cause internal water seepage, which is dangerous to the connected electrical components. The nuts are easily damaged during long-term use, affecting the use effect of the protective cover. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a PVC cable protection connection structure, which solves the problems that the protective cover after connection has poor sealing performance and is complicated to install. When encountering rainy weather outdoors, the sealing problem of the protective cover may cause internal water seepage, posing a danger to the connected electrical components. The nut is easily damaged during long-term use, affecting the use effect of the protective cover.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions: a PVC cable protection connection structure. It includes a connection structure body, the connection structure body includes a lower protective shell, the top of the lower protective shell is recessed downward with a fixed card slot, the upper end of the lower protective shell is provided with a threaded ring, the bottom of the inner cavity of the lower protective shell is fixedly connected with a fixed ring, the top of the fixed ring is fixedly connected with a telescopic spring, the top of the telescopic spring is fixedly connected with an extrusion ring, the outside of the threaded ring is rotatably connected with a sealing buckle, the inside of the sealing buckle is sleeved with an upper protective shell, the lower part of the upper protective shell is protruding outward with a locking card block, and the bottom of the upper protective shell is fixedly connected with a sealing ring.

[0005] Preferably, an upper protective tube extends upward from the top of the upper protective shell, and a lower protective tube extends downward from the bottom of the lower protective shell.

[0006] Preferably, one end of the fixed slot extends to one side and then bulges.

[0007] Preferably, the extrusion ring is movably connected in the inner cavity of the lower protective shell, and the top of the extrusion ring fits with the top of the upper protective shell.

[0008] Preferably, the diameter of the upper protective shell is the same as the inner diameter of the lower protective shell.

[0009] Preferably, the upper protection tube can be communicated with the lower protection tube.

[0010] Preferably, the locking block can be snapped into the interior of the fixed slot.

[0011] The utility model provides a PVC cable protection connection structure. Compared with the prior art, it has the following beneficial effects:

[0012] 1. A PVC cable protection connection structure, wherein an upper protective shell is clamped to the interior of a downwardly recessed fixed slot at the top of a lower protective shell by a locking block, and an upward squeezing force is applied to the upper protective shell due to the elastic effect of a telescopic spring arranged inside the lower protective shell, so that the upper protective shell can be fixed inside the lower protective shell, and then a sealing buckle is screwed on the outside of a threaded ring to reinforce the connection between the lower protective shell and the upper protective shell, thereby avoiding the time-consuming installation of multiple nuts when nuts are used to connect PVC cables, and the problem of nuts becoming loose after being used for too long after installation.

[0013] 2. A PVC cable protection connection structure, in which a sealing ring arranged at the bottom of an upper protective shell is clamped on the connection part of a lower protective shell and an upper protective shell to seal the inside of the connection structure. A sealing structure arranged on the top of the inner ring of the sealing buckle can squeeze the retaining ring on the top of the lower protective shell. The sealing structure arranged on the inner wall of the lower protective shell can also protect the connection part under the pressurized action of the upper protective shell to avoid water seepage inside the connection structure due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is an exploded view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0017] Figure 4 It is a partial structural cross-sectional view of the utility model.

[0018] In the figure: 1. connecting structure body; 11. lower protective shell; 12. fixing slot; 13. threaded ring; 14. lower protective tube; 15. upper protective shell; 16. locking block; 17. sealing ring; 18. extrusion ring; 19. telescopic spring; 110. fixing ring; 111. upper protective tube; 112. sealing buckle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides a technical solution: a PVC cable protection connection structure. It includes a connection structure body 1, which includes a lower protective shell 11. The top of the lower protective shell 11 is recessed downward with a fixed card slot 12. The fixed card slot 12 can clamp the locking card block 16 fixedly connected to the outside of the upper protective shell 15 inside, so that the lower protective shell 11 and the upper protective shell 15 can be connected as a whole. A threaded ring 13 is provided on the upper end of the lower protective shell 11. A fixing ring 110 is fixedly connected to the bottom of the inner cavity of the lower protective shell 11. The fixing ring 110 is used to fix the telescopic spring 19 fixedly connected at the top in the inner cavity of the lower protective shell 11. The top of the fixing ring 110 is fixedly connected with a telescopic spring 19. The telescopic spring 19 is used to apply an upward force to the upper protective shell 15 due to its own elastic force when the top upper protective shell 15 is clamped into the interior of the lower protective shell 11. The upper protective shell 15 cannot be easily separated from the interior of the lower protective shell 11. The top of the telescopic spring 19 is fixedly connected with an extrusion ring 18, and the outside of the threaded ring 13 is rotatably connected with a sealing buckle 112. The sealing buckle 112 is used to fix the connection part of the lower protective shell 11 and the upper protective shell 15 after the upper protective shell 15 is clamped in the interior of the lower protective shell 11, so that the upper protective shell 15 will not deviate from the locking block 16 from the fixed slot 12 due to vibration and other reasons during use. The upper protective shell 15 is sleeved on the inside of the sealing buckle 112, and a locking block 16 protrudes outward from the bottom of the upper protective shell 15. The bottom of the upper protective shell 15 is fixedly connected with a sealing ring 17, which is used to seal the gap between the connection between the lower protective shell 11 and the upper protective shell 15 to prevent internal water seepage during use.

[0021] See also Figure 1-4An upper protective tube 111 extends upward from the top of the upper protective shell 15, and a lower protective tube 14 extends downward from the bottom of the lower protective shell 11. The lower protective tube 14 and the upper protective tube 111 are used to be connected to the outside of the cable to protect the surface of the cable. One end of the fixed card slot 12 extends to one side and then bulges, which is used to prevent the locking block 16 from being offset after being snapped into. The extrusion ring 18 is movably connected in the inner cavity of the lower protective shell 11, and the top of the extrusion ring 18 fits with the top of the upper protective shell 15. The bottom of the upper protective shell 15 is snapped into the interior of the lower protective shell 11 through the pressure transmitted by the extrusion ring 18. The diameter of the upper protective shell 15 is the same as the inner diameter of the lower protective shell 11. The upper protective tube 111 can be interconnected with the lower protective tube 14. The locking block 16 can be snapped into the interior of the fixed card slot 12.

[0022] When in use, first, the cables at both ends are sleeved into the lower protective shell 11 and the upper protective shell 15 through the lower protective tube 14 and the upper protective tube 111. Since the lower protective shell 11 squeezes the extrusion ring 18 downward, the telescopic spring 19 arranged at the bottom of the extrusion ring 18 rebounds upward, and the locking block 16 is rotated to one end and clamped into the interior of the fixed slot 12, so that the upper protective shell 15 is connected to the interior of the lower protective shell 11. Since the sealing ring 17 arranged at the bottom of the lower protective shell 11 is clamped between the connection between the lower protective shell 11 and the upper protective shell 15, it can prevent external rainwater from entering the interior of the connection between the lower protective shell 11 and the upper protective shell 15. The sealing buckle 112 is screwed into the connection between the top of the lower protective shell 11 and the upper protective shell 15, so that the interior of the connection is wrapped in the inner cavity of the sealing buckle 112. The inner cavity of the sealing buckle 112 is provided with a sealing structure, which can make the connection more sealed and prevent rainwater from seeping in during use.

[0023] In this embodiment, a PVC cable protection connection structure, in the above-mentioned components, its own structural features and working principles all adopt the existing technology and will not be described in detail here.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC cable protection connection structure, comprising a connection structure body (1), characterized in that: The connecting structure body (1) comprises a lower protective shell (11), the top of the lower protective shell (11) is recessed downwards to form a fixing groove (12), the upper end of the lower protective shell (11) is provided with a threaded ring (13), the bottom of the inner cavity of the lower protective shell (11) is fixedly connected to a fixing ring (110), the top of the fixing ring (110) is fixedly connected to a telescopic spring (19), the top of the telescopic spring (19) is fixedly connected to an extrusion ring (18), the outside of the threaded ring (13) is rotatably connected to a sealing buckle (112), the inside of the sealing buckle (112) is sleeved with an upper protective shell (15), the lower part of the upper protective shell (15) is protruding outwards to form a locking block (16), and the bottom of the upper protective shell (15) is fixedly connected to a sealing ring (17).

2. A PVC cable protection connection structure according to claim 1, characterized in that: An upper protective tube (111) extends upward from the top of the upper protective shell (15), and a lower protective tube (14) extends downward from the bottom of the lower protective shell (11).

3. A PVC cable protection connection structure according to claim 1, characterized in that: One end of the fixed slot (12) extends to one side and then bulges.

4. A PVC cable protection connection structure according to claim 1, characterized in that: The extrusion ring (18) is movably connected in the inner cavity of the lower protective shell (11), and the top of the extrusion ring (18) is in contact with the top of the upper protective shell (15).

5. A PVC cable protection connection structure according to claim 2, characterized in that: The diameter of the upper protective shell (15) is the same as the inner diameter of the lower protective shell (11).

6. A PVC cable protection connection structure according to claim 2, characterized in that: The upper protection tube (111) can be in communication with the lower protection tube (14).

7. A PVC cable protection connection structure according to claim 1, characterized in that: The locking block (16) can be locked inside the fixed slot (12).

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