Cable joint

Abstract

The utility model relates to a cable joint, which comprises a joint body, the joint body is of a hollow T-shaped structure, a cable interface for a cable to extend into is arranged on the joint body, a sealing and fixing assembly is arranged at the cable interface, and a stress cone is arranged in the joint body. The sealing and fixing assembly comprises a tubular body fixed in the cable interface, fixing pieces arranged at the inner end and the outer end of the tubular body and sealing parts arranged in the fixing pieces, the fixing pieces are of hollow tubular structures and are in threaded connection with the tubular body, and a plurality of locking claw pieces extending inwards in the axial direction are arranged at the inner ends of the fixing pieces; a tightening part with the diameter gradually reduced from outside to inside is arranged in the tubular body, the tightening part corresponds to the locking claw piece, a protruding part protruding in the axial direction is arranged at the inner end of the locking claw piece, and the surface of the protruding part is of a concave-convex structure. The cable connector is reasonable in structural arrangement, can effectively fix and seal the cable at the cable connector, can better meet the use requirements of customers, and has good practicability and generalizability.

Description

Technical Field

[0001] The utility model belongs to the field of joint structure design, and in particular relates to a cable joint. Background Art

[0002] Cables play an important role in the electrical and communications fields. In actual applications, cables need to be connected to electrical equipment such as switch cabinets, transformers, and cable junction boxes using cable connectors. Patent document CN220291651U discloses a top-expanded T-shaped cable connector, including interfaces on the top, bottom, and right side of the cable connector, an internal wiring groove on the side opposite to the interface, a connecting cover on the interface, a threading hole for the cable to pass through at the center of the connecting cover, an elastic shrink sleeve fixedly connected to the inner surface of the connecting cover, and a tightening rubber band on the outer surface of the elastic shrink sleeve. The sealing structure of the above patent document has the problems of a large number of parts, a complex structure, and cumbersome assembly, which affects the user experience. Utility Model Content

[0003] In view of this, the utility model provides a cable connector to solve the defects pointed out in the background technology.

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

[0005] The utility model provides a cable connector, including a connector body, which is a hollow T-shaped structure, on which a cable interface for a cable to extend into is arranged, a sealing fixing component is arranged at the cable interface, and a stress cone is arranged in the connector body; the sealing fixing component includes a tubular body fixed in the cable interface, a fixing piece arranged at the inner and outer ends of the tubular body, and a sealing component arranged in the fixing piece, the fixing piece is a hollow tubular structure, which is threadedly connected to the tubular body, and a plurality of locking claw pieces extending axially inward are arranged at the inner end of the fixing piece, a tightening portion with a diameter gradually reduced from the outside to the inside is arranged in the tubular body, the tightening portion corresponds to the locking claw piece, the inner end of the locking claw piece is provided with a protrusion protruding in the axial direction, the surface of the protrusion is a concave-convex structure, and the sealing component is used to seal the gap between the cable and the fixing piece.

[0006] In some embodiments, the locking claw member has a thickness that gradually increases from inside to outside along the axial direction of the fixing member.

[0007] In some embodiments, the number of the locking claws is five to eight and they are evenly distributed along the circumference.

[0008] In some embodiments, the outer end of the fixing member extends out of the tubular body and is provided with a flange portion protruding radially outward, and the flange portion is a polygonal structure.

[0009] In some embodiments, the sealing component is a hollow tubular structure made of rubber, and the inner diameter of the sealing component is smaller than the inner diameter of the fixing component; an annular convex portion is arranged around the outer periphery of the inner end of the sealing component, and an annular concave portion is arranged on the inner wall of the fixing component, and the annular convex portion and the annular concave portion cooperate to position the sealing component in the axial direction of the fixing component.

[0010] In some embodiments, the outer end of the sealing component extends out from the outer end surface of the fixing member and expands radially outward to form a bell-mouth shape.

[0011] In some embodiments, a plurality of annular teeth arranged at intervals along the axial direction are provided on the inner peripheral wall of the sealing component.

[0012] In some embodiments, the inner edge of the annular tooth portion is inclined toward the inside of the cable interface, and the cross-sectional shape of the annular tooth portion is a triangle.

[0013] In some embodiments, the tubular body is threadedly fixed at the cable interface.

[0014] The utility model has the positive effects: in the cable connector of the utility model, a sealing fixing component is arranged at the cable interface, the cable can be fixed by the sealing fixing component, and it also has a sealing function. The sealing fixing component has a small number of parts, a simple structure, and is easy to assemble. It can well meet the needs of customers and has good practicality and popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional view of the cable connector in the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of point A in the cable connector shown in the figure.

[0018] The reference numerals shown in the figure are: 1-connector body; 2-cable interface; 20-sealing fixing assembly; 21-tubular body; 22-fixing member; 23-sealing member; 231-annular tooth portion; 24-locking claw member; 25-tightening portion; 26-protruding portion; 27-flange portion; 28-annular convex portion; 281-stainless steel ring; 29-annular recess. 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] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present utility model, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0022] The structure of the cable connector provided in this embodiment is as follows Figure 1 and Figure 2As shown, it includes a connector body 1, which is a hollow T-shaped structure and is provided with a cable interface 2 for the cable to extend into. A sealing and fixing component 20 is provided at the cable interface 2, and a stress cone is provided in the connector body 1; the sealing and fixing component 20 includes a tubular body 21 fixed in the cable interface 2, a fixing piece 22 provided at the inner and outer ends of the tubular body 21, and a sealing component 23 provided in the fixing piece 22. The fixing piece 22 is a hollow tubular structure, which is threadedly connected to the tubular body 21, and a plurality of locking claws 24 extending axially inward are provided at the inner end of the fixing piece 22. The locking claws 24 are preferably integrally injection-molded with the fixing piece 22. A tightening portion 25 with a diameter gradually decreasing from the outside to the inside is provided in the tubular body 21, and the tightening portion 25 corresponds to the locking claws 24. The sealing component 23 is used to seal the gap between the cable and the fixing piece 22. Furthermore, the inner end of the locking claw member 24 is provided with a protrusion 26 protruding in the axial direction, and the surface of the protrusion 26 is a concave-convex structure. By setting the concave-convex structure on the protrusion 26, when the locking claw member 24 gathers inward, the concave-convex structure forms a bite with the cable surface, thereby enhancing the fixing effect of the cable.

[0023] When the cable connector is in use, the end of the cable is inserted into the connector body 1 through the sealing fixing assembly 20, and then the fixing piece 22 is tightened. During the process of the fixing piece 22 being tightened and moved axially inward, the locking claw 24 is compressed by the tightening part 25 and is locked to the surface of the cable, thereby strengthening the fixation of the cable. At the same time, due to the presence of the sealing component 23, the gap between the cable and the fixing piece 22 can be sealed to play a waterproof and dustproof role. In the cable connector of this embodiment, a sealing fixing assembly 20 is provided at the cable interface 2, and the cable can be fixed by the sealing fixing assembly 20, and it also has a sealing function. The sealing fixing assembly 20 has a small number of components, a simple structure, and is easy to assemble. It can well meet the needs of customers and has good practicality and popularization.

[0024] Exemplarily, the surface of the raised portion 26 may be provided with circular convex teeth, polygonal convex teeth or concave-convex stripes to form the concave-convex structure.

[0025] See also Figure 2 As shown, the thickness of the locking claw member 24 gradually increases along the axial direction of the fixing member 22 from the inside to the outside. By reasonably setting the thickness of the locking claw member 24, the closer to the root, the thicker the thickness and the better the strength, thus ensuring the durability of the locking claw member 24.

[0026] The number of the locking claws 24 is five to eight and they are evenly distributed along the circumference, so that the corresponding parts of the cable are subjected to a relatively uniform clamping force in the circumferential direction.

[0027] The outer end of the fixing member 22 extends out of the tubular body 21 and is provided with a flange portion 27 protruding radially outward. The flange portion 27 is a polygonal structure, which makes it easier to apply force when tightening the fixing member 22 and reduces the difficulty of tightening the fixing member 22.

[0028] In a further embodiment, if Figure 2 As shown, the sealing component 23 is a hollow tubular structure made of rubber. The inner diameter of the sealing component 23 is smaller than the inner diameter of the fixing member 22. An annular convex portion 28 is arranged around the outer periphery of the inner end of the sealing component 23, and an annular concave portion 29 is arranged on the inner wall of the fixing member 22. The annular convex portion 28 cooperates with the annular concave portion 29 to position the sealing component 23 in the axial direction of the fixing member 22, thereby effectively limiting the sealing component 23 to prevent the sealing component 23 from falling off, and the cable passes through the sealing component 23.

[0029] In order to enhance the positioning and anti-slipping effect of the sealing component 23, a glue layer may be provided between the outer wall of the sealing component 23 and the inner wall of the fixing member 22, and the sealing component 23 may be bonded to the inside of the fixing member 22 through the glue layer. In addition, in actual design, a stainless steel ring 281 may be provided inside the annular protrusion 28, and the stainless steel ring 281 may enhance the firmness of the annular protrusion 28 being inserted into the annular recess 29, and enhance the anti-slipping effect of the sealing component 23; the stainless steel ring 281 and the sealing component 23 are integrated by injection molding; and the fixing member 22 is preferably integrally injection molded by plastic.

[0030] In some embodiments, the outer end of the sealing component 23 extends out from the outer end surface of the fixing member 22 and expands radially outward to form a trumpet shape. This arrangement facilitates the passage of the cable and can protect the corresponding parts of the cable.

[0031] In some embodiments, the inner wall of the sealing component 23 is provided with a plurality of annular teeth 231 arranged at intervals along the axial direction; the plurality of annular teeth 231 are provided so as to form a plurality of sealing lines of defense with the cable surface, thereby enhancing the sealing effect; in order to prevent the annular teeth 231 from generating a large resistance when the cable passes through the sealing component 23, the inner edge of the annular teeth 231 is further arranged to be inclined toward the inner direction of the cable interface 2, and the cross-sectional shape of the annular teeth 231 is preferably set to be a triangle.

[0032] In order to facilitate the installation of the sealing and fixing component at the interface 2 , in this embodiment, the tubular body 21 is screwed and fixed at the cable interface 2 .

[0033] As a further embodiment, in order to measure the internal temperature of the cable connector, a temperature sensor may be disposed inside the connector body 1 .

[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A cable connector, comprising a connector body (1), the connector body (1) being a hollow T-shaped structure, provided with a cable interface (2) for the cable to be inserted, a sealing fixing component (20) being provided at the cable interface (2), and a stress cone being provided in the connector body (1); characterized in that: The sealing fixing assembly (20) comprises a tubular body (21) fixed in the cable interface (2), a fixing piece (22) arranged at the inner and outer ends of the tubular body (21), and a sealing component (23) arranged in the fixing piece (22); the fixing piece (22) is a hollow tubular structure, which is threadedly connected to the tubular body (21), and a plurality of locking claws (24) extending inwardly along the axial direction are arranged at the inner end of the fixing piece (22); a tightening portion (25) whose diameter gradually decreases from the outside to the inside is arranged in the tubular body (21), and the tightening portion (25) corresponds to the locking claw (24); the inner end of the locking claw (24) is provided with a protrusion (26) protruding in the axial direction, and the surface of the protrusion (26) is a concave-convex structure; the sealing component (23) is used to seal the gap between the cable and the fixing piece (22).

2. The cable connector according to claim 1, characterized in that: The locking claw member (24) has a thickness that gradually increases in a direction from inside to outside along the axial direction of the fixing member (22).

3. The cable connector according to claim 1, characterized in that: The number of the locking claws (24) is five to eight and they are evenly distributed along the circumferential direction.

4. The cable connector according to claim 1, characterized in that: The outer end of the fixing member (22) extends out of the tubular body (21) and is provided with a flange portion (27) protruding radially outward, wherein the flange portion (27) is a polygonal structure.

5. The cable connector according to claim 1, characterized in that: The sealing component (23) is a hollow tubular structure made of rubber. The inner diameter of the sealing component (23) is smaller than the inner diameter of the fixing component (22). An annular convex portion (28) is arranged around the outer periphery of the inner end of the sealing component (23). An annular concave portion (29) is arranged on the inner wall of the fixing component (22). The annular convex portion (28) cooperates with the annular concave portion (29) to position the sealing component (23) in the axial direction of the fixing component (22).

6. The cable connector according to claim 5, characterized in that: The outer end of the sealing component (23) extends outward from the outer end surface of the fixing member (22) and expands radially outward to form a bell-mouth shape.

7. The cable connector according to claim 6, characterized in that: The inner peripheral wall of the sealing component (23) is provided with a plurality of annular teeth (231) spaced apart in the axial direction.

8. The cable connector according to claim 7, characterized in that: The inner edge of the annular tooth portion (231) is inclined toward the inside of the cable interface (2), and the cross-sectional shape of the annular tooth portion (231) is a triangle.

9. The cable connector according to any one of claims 1 to 8, characterized in that: The tubular body (21) is threadedly fixed at the cable interface (2).

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