Cable joint

Abstract

The utility model relates to a cable joint, which comprises a joint pipe fitting, a screwing piece and a sealing sleeve, the joint pipe fitting comprises a polygonal holding part and an annular sealing part, the joint pipe fitting is hollow and is provided with an accommodating through groove, a limiting step is formed on the inner wall of the sealing part, the rear end of the sealing sleeve is propped against the limiting step, and the screwing piece is screwed on the sealing sleeve. An annular protruding part is arranged at the front end of the sealing sleeve, the outer diameter of the annular protruding part is smaller than that of the sealing sleeve, the sealing part is provided with a plurality of sealing strips arranged at intervals in the circumferential direction, sealing teeth are arranged at the upper ends of the sealing strips, the sealing teeth are obliquely arranged in the anticlockwise direction, and the height of the sealing teeth is smaller than that of the annular protruding part. By the adoption of the technical scheme, stability is high, force application is balanced, damage to the sealing teeth is small, the service life is long, meanwhile, the height of the sealing teeth is smaller than that of the annular protruding part, allowance space exists between the sealing teeth and the annular protruding part, when the screwing piece and the connector pipe fitting are screwed in a threaded mode, the sealing teeth get close but the sealing sleeve cannot move towards the rear end, and stability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable accessories, in particular to a cable connector. Background Art

[0002] Cable joints are widely used in the fixing and protection of wires and cables in mechanical equipment, ship electrical equipment, and anti-corrosion equipment. Cable joints are used to lock and fix incoming and outgoing wires, and play a role in waterproofing, dustproofing, and vibration prevention. However, there are problems with the matching between the sealing sleeve and the joint pipe of the existing cable joint. When the joint pipe and the tightening piece are screwed together, the sealing sleeve is repeatedly over-extruded and easily deformed and moved, and the stability is poor. Utility Model Content

[0003] In summary, in order to overcome the deficiencies of the prior art, the utility model provides a cable connector.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cable connector, comprising a connector pipe, a tightening piece and a sealing sleeve, the connector pipe comprising a gripping portion arranged in a polygonal shape and a sealing portion arranged in an annular shape, the connector pipe is hollow and has a accommodating through groove, a limiting step is formed on the inner wall of the sealing portion, the rear end of the sealing sleeve abuts against the limiting step, an annular convex portion is arranged at the front end of the sealing sleeve, the outer diameter of the annular convex portion is smaller than the outer diameter of the sealing sleeve, the sealing portion has a plurality of sealing strips arranged at intervals along the circumferential direction, the upper end of the sealing strip is provided with sealing teeth, the sealing teeth are inclined in a counterclockwise direction, and the height of the sealing teeth is smaller than the height of the annular convex portion.

[0005] By adopting the above technical scheme, compared with the existing interference fit between the sealing sleeve and the joint pipe fitting, the sealing sleeve is limited. However, when the tightening piece and the joint pipe fitting are screwed together, the sealing sleeve is squeezed to deform and fit the cable. The sealing sleeve is repeatedly over-extended and easily deformed and moves to the rear end. In the technical scheme of the utility model, the sealing teeth are arranged to be inclined in the counterclockwise direction. When the tightening piece is screwed together clockwise to be threadedly connected with the joint pipe fitting, the inclined sealing teeth and the adjacent sealing teeth are close to each other, thereby reducing the diameter and fixing the cable. The utility model has high stability, balanced force, little damage to the sealing teeth, and long service life. At the same time, the height of the sealing teeth is less than the height of the annular convex portion, and there is a margin space between the two. When the tightening piece and the joint pipe fitting are screwed together, the sealing teeth are close but the sealing sleeve will not move to the rear end. The utility model has high stability.

[0006] The utility model is further configured that: the length of the sealing teeth and the outer diameter difference of the annular convex portion and the sealing sleeve are adapted to each other.

[0007] By adopting the above technical solution, the sealing teeth play a limiting role for the sealing sleeve, preventing it from separating from the joint pipe.

[0008] The present utility model is further configured such that: the cross-section of the sealing strip is quadrilateral, and the sealing strip and the sealing teeth are inclined in the same direction.

[0009] By adopting the above technical solution, compared with the straight strip type, the quadrilateral setting (approximate rhombus or parallelogram) makes the contact area at the connection between the sealing strip and the sealing part larger during the inclined deformation, the force is more stable, the deformation resistance is greater, and the service life is longer. At the same time, when the tightening member is screwed tightly with the threaded joint pipe fitting, the outer peripheral sides of the sealing teeth are all in contact, and the protection performance is better.

[0010] The present utility model is further configured such that: a connecting part is provided between the holding part and the sealing part, an external thread is provided on the connecting part, the tightening member has an internal thread that mates with the external thread, the tightening member is arranged outside the sealing part and is threadedly connected to the connecting part through the cooperation of its internal thread and the external thread. The tightening member includes a hexagonal operating part, and anti-slip lines are provided on the outer periphery of the operating part.

[0011] By adopting the above technical solution, during the tightening process of the tightening member, the sealing part and the sealing sleeve inside the sealing part are pressed inward to tightly hold the outer wall of the cable, so as to achieve the purpose of fastening the cable and preventing water. After the tightening member is tightened in place, a good anti-loosening and anti-detaching effect is achieved.

[0012] The present utility model is further configured such that: the cross-section of the external thread is in the shape of a right triangle, and the right-angled side is parallel to the outer periphery of the connecting part.

[0013] By adopting the above technical solution, compared with the traditional triangular thread, the locking force of this external thread is stronger and the stability is higher.

[0014] The following describes the specific embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0015] Figure 1 is a perspective view of an embodiment of the present utility model;

[0016] Figure 2 is an internal structure diagram of an embodiment of the present utility model;

[0017] Figure 3 is a perspective view of the joint pipe fitting of an embodiment of the present utility model;

[0018] Figure 4 is the front view of the joint pipe fitting of an embodiment of the present utility model;

[0019] Reference numerals: 1. Connector fitting, 11. Holding part, 12. Sealing part, 121. Limiting step, 122. Sealing strip, 123. Sealing tooth, 13. Accommodating through groove, 14. Connecting part, 2. Tightening member, 21. Operating part, 22. Anti-slip pattern, 3. Sealing sleeve, 31. Annular convex part. Specific implementation manner

[0020] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0021] See the attached Figures 1-4 , a cable connector disclosed in this embodiment includes a connector fitting 1, a tightening member 2 and a sealing sleeve 3. The connector fitting 1 includes a polygonally arranged holding part 11 and an annularly arranged sealing part 12. The connector fitting 1 is hollow and formed with an accommodating through groove 13. A limiting step 121 is formed on the inner wall of the sealing part 12. The rear end of the sealing sleeve 3 abuts against the limiting step 121. The front end of the sealing sleeve 3 is provided with an annular convex part 31. The outer diameter of the annular convex part 31 is smaller than the outer diameter of the sealing sleeve 3. The sealing part 12 has a plurality of sealing strips 122 arranged at intervals in the circumferential direction. Sealing teeth 123 are provided at the upper ends of the sealing strips 122. The sealing teeth 123 are inclined in the counterclockwise direction. The height of the sealing teeth 123 is smaller than the height of the annular convex part 31.

[0022] This embodiment is further provided that: the length of the sealing teeth 123 is adapted to the difference between the outer diameter of the annular convex part 31 and the outer diameter of the sealing sleeve 3.

[0023] This embodiment is further provided that: the cross-section of the sealing strip 122 is quadrilateral, and the sealing strip 122 and the sealing teeth 123 are inclined in the same direction.

[0024] This embodiment is further provided that: a connecting part 14 is provided between the holding part 11 and the sealing part 12. External threads are provided on the connecting part 14. The tightening member 2 has internal threads that cooperate with the external threads. The tightening member 2 is arranged outside the sealing part 12 and is threadedly connected to the connecting part 14 through the cooperation of its internal threads and the external threads. The tightening member 2 includes a hexagonal operating part 21. Anti-slip patterns 22 are provided on the outer periphery of the operating part 21.

[0025] This embodiment is further provided that: the cross-section of the external thread is right-angled triangular, and the right-angled side is parallel to the outer periphery of the connecting part.

[0026] The above-mentioned "between" not only refers to between positions and orientations, but also includes the meaning of interaction between different components. The above-mentioned "front and rear" are only relative descriptions for the convenience of description and understanding, without excluding other possibilities.

[0027] Although terms such as joint pipe fitting 1, holding part 11, sealing part 12, limiting step 121, sealing strip 122, sealing teeth 123, accommodating through groove 13, connecting part 14, tightening member 2, operating part 21, anti-slip pattern 22, sealing sleeve 3, and annular convex part 31 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A cable connector, characterized in that: It includes a joint pipe, a tightening piece and a sealing sleeve. The joint pipe includes a gripping portion arranged in a polygonal shape and a sealing portion arranged in an annular shape. The joint pipe is hollow and has an accommodating through groove. A limiting step is formed on the inner wall of the sealing portion. The rear end of the sealing sleeve abuts against the limiting step. The front end of the sealing sleeve is provided with an annular convex portion. The outer diameter of the annular convex portion is smaller than the outer diameter of the sealing sleeve. The sealing portion has a plurality of sealing strips arranged at intervals along the circumferential direction. The upper end of the sealing strip is provided with sealing teeth. The sealing teeth are arranged obliquely in the counterclockwise direction. The height of the sealing teeth is smaller than the height of the annular convex portion.

2. A cable connector according to claim 1, characterized in that: The length of the sealing teeth and the annular protrusion are adapted to the outer diameter difference of the sealing sleeve.

3. A cable connector according to claim 1, characterized in that: The cross section of the sealing strip is quadrilateral, and the sealing strip and the sealing teeth are inclined in the same direction.

4. A cable connector according to claim 1, characterized in that: A connecting portion is provided between the holding portion and the sealing portion, and an external thread is provided on the connecting portion. The tightening member has an internal thread that cooperates with the external thread. The tightening member is provided on the outside of the sealing portion and realizes a threaded connection with the connecting portion through the internal thread that cooperates with the external thread. The tightening member includes a hexagonal operating portion, and anti-slip grooves are provided on the outer periphery of the operating portion.

5. A cable connector according to claim 4, characterized in that: The cross section of the external thread is arranged in a right triangle.

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