Waterproof joint capable of swinging and preventing following rotation of cable

Abstract

The utility model relates to a cable swingable waterproof joint capable of preventing following rotation. The cable swingable waterproof joint comprises a joint body, a locking piece, a clamping jaw core sleeve and a nut, the locking piece is arranged in the clamping jaw core sleeve, the positioning protruding edges are arranged in the positioning grooves in a one-to-one correspondence mode, the clamping jaw core sleeve is arranged in an inner cavity of the upper portion of the connector body, the steel balls are arranged in sliding grooves of the clamping jaw core sleeve in a one-to-one correspondence mode, second external threads are arranged on the outer wall of the nut, and the lower portion of the nut is connected with the internal threads of the connector body through the second external threads. The design that the cable, the locking piece and the clamping jaw core sleeve can swing can reduce the failure risk that a sealing piece is not evenly stressed due to the fact that the long-term bending angle of the cable is too small, the cable swinging back and forth is protected, and stable connection of the connecting position of the binding post is kept. The design that the cable, the locking piece and the clamping jaw core sleeve cannot rotate can prevent the torsion of the cable from being transmitted to the wiring pile, thereby preventing the wiring from loosening or being damaged.

Description

Technical Field

[0001] The utility model relates to the electrical field, in particular to a cable connector, in particular to a cable swingable and anti-rotation waterproof connector. Background Art

[0002] Cable joints are a type of connection device used in industrial equipment. In many equipment and cable connection parts, cable joints are used as cable fixing and protective parts, which can achieve the purpose of waterproofing, moisture-proofing and anti-rotation, and ultimately ensure the safety of equipment use. However, in the prior art, when the cable is connected, due to the influence of the installation space or other factors, the installation angle is large (not parallel to the axis of the joint), so that the cable is bent and twisted at a certain angle for a long time, which makes the cable have greater stress. The cable stress causes uneven force on one side of the seal in the joint, which makes the equipment very prone to water leakage. In addition, the cable is bent and twisted for a long time, and the outer sheath layer is also very easy to crack and break, which poses the risk of leakage and equipment short circuit. Summary of the invention

[0003] The utility model aims to provide a cable waterproof connector which can swing and prevent rotation. The cable waterproof connector which can swing and prevent rotation can solve the technical problems in the prior art that the large cable installation angle leads to uneven force on one side of the sealing part and the outer sheath layer is easy to crack and damage.

[0004] The utility model discloses a cable waterproof connector capable of swinging and preventing rotation, comprising a connector body, a locking piece, a claw core sleeve and a nut;

[0005] The joint body is a hollow tube, the upper inner wall of the joint body is provided with an internal thread, the lower outer wall of the joint body is provided with a first external thread, the upper inner cavity wall of the joint body is provided with a first concave cone surface, a plurality of blind holes are provided on the first concave cone surface at intervals along the circumferential direction, and a steel ball is provided in any blind hole, an annular boss is provided on the outer side of the joint body, an annular sealing groove is provided in the bottom surface of the annular boss, and a sealing ring is provided in the sealing groove;

[0006] The locking member comprises two hemispheres, the circular surfaces of the two hemispheres are fitted together to form a sphere, the circular surfaces of the two hemispheres are respectively provided with a concave cavity, the bottoms of the two concave cavities are respectively provided with a first cable hole, and at least two positioning grooves are arranged at intervals along the circumferential direction on the outer side walls of the hemispheres, and the positioning grooves on the two hemispheres correspond to each other one by one;

[0007] A second cable hole is provided at the center of the bottom of the claw core sleeve, the claw core sleeve comprises at least two claws spaced apart in the circumferential direction, any two adjacent claw lower parts are connected by a positioning convex ridge, the inner wall of any positioning convex ridge protrudes from the inner wall of the claw in the axial direction, a sliding groove is provided on the outer wall of any positioning convex ridge, a gap is provided between any two adjacent claw upper parts, the claw is elastic, and the upper end of any claw is retracted toward the axial center;

[0008] The locking piece is arranged in the claw core sleeve, the positioning ridges are arranged one by one in the positioning grooves, the claw core sleeve is arranged in the upper inner cavity of the joint body, the steel balls are arranged one by one in the slide grooves of the claw core sleeve, the outer wall of the nut is provided with a second external thread, and the lower part of the nut is connected to the internal thread of the joint body through the second external thread.

[0009] Furthermore, the inner wall of the nut is configured as a second concave cone surface.

[0010] Furthermore, the outer diameter of the upper portion of the joint body is greater than the outer diameter of the lower portion of the joint body.

[0011] Furthermore, six first clamping surfaces are evenly arranged on the outer wall of the nut along the circumferential direction.

[0012] Furthermore, the joint body is evenly provided with six second clamping surfaces along the circumferential direction.

[0013] Compared with the prior art, the utility model has a positive and obvious effect. The design that the cable, locking piece, and claw core sleeve can swing can reduce the risk of failure of the seal caused by uneven force on the seal due to the long-term small bending angle of the cable, protect the reciprocating swinging cable, and keep the connection of the terminal post firmly connected. The design that the cable, locking piece, and claw core sleeve cannot rotate can prevent the cable torque from being transmitted to the terminal post, causing the connection to become loose or damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is an exploded schematic diagram of a cable waterproof connector capable of swinging and preventing rotation.

[0015] Figure 2 The utility model is a cross-sectional schematic diagram of a cable waterproof connector capable of swinging and preventing rotation.

[0016] Figure 3 The utility model is a front view schematic diagram of a cable waterproof connector capable of swinging and preventing rotation.

[0017] Figure 4 The utility model is a stereoscopic schematic diagram of a connector body in a cable waterproof connector capable of swinging and preventing rotation.

[0018] Figure 5The utility model is a schematic cross-sectional view of a connector body in a cable swingable and anti-rotation waterproof connector.

[0019] Figure 6 The utility model is a schematic cross-sectional view of a locking member in a cable waterproof connector capable of swinging and preventing rotation.

[0020] Figure 7 The utility model is a three-dimensional schematic diagram of a hemispherical body in a cable swingable and anti-rotation waterproof connector.

[0021] Figure 8 The utility model is a schematic cross-sectional view of a hemispherical body in a cable waterproof connector capable of swinging and preventing rotation.

[0022] Fig. 9 The utility model is a schematic top view of a hemispherical body in a cable swingable and anti-rotation waterproof connector.

[0023] Fig.10 It is a three-dimensional schematic diagram of a claw core sleeve in a cable swingable and anti-rotation waterproof connector of the utility model.

[0024] Fig.11 The utility model is a schematic cross-sectional view of a nut in a cable waterproof connector capable of swinging and preventing rotation.

[0025] Fig.12 The utility model is a three-dimensional schematic diagram of a nut in a cable waterproof connector capable of swinging and preventing rotation. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0027] like Figure 1-Figure 12 As shown, a cable waterproof connector capable of swinging and preventing rotation of the utility model comprises a connector body 5, a locking member 3, a claw core sleeve 2 and a nut 1;

[0028] The joint body 5 is a hollow tube, the upper inner wall of the joint body 5 is provided with an internal thread 51, the lower outer wall of the joint body 5 is provided with a first external thread 55, the upper inner cavity wall of the joint body 5 is provided with a first concave cone 53, a plurality of blind holes 52 are provided at intervals along the circumferential direction on the first concave cone 53, any blind hole 52 is provided with a steel ball 4, an annular boss is provided on the outer side of the joint body 5, an annular sealing groove 54 is provided in the bottom surface of the annular boss, and a sealing ring 6 is provided in the sealing groove 54;

[0029] The locking member 3 comprises two hemispheres 31, the circular surfaces of the two hemispheres 31 are fitted together to form a sphere, a concave cavity 32 is respectively arranged on the circular surface of the two hemispheres 31, the bottom of the two concave cavities 32 is respectively arranged with a first cable hole 33, and at least two positioning grooves 34 are arranged at intervals along the circumferential direction on the outer side wall of the hemispheres 31, and the positioning grooves 34 on the two hemispheres 31 correspond to each other one by one;

[0030] A second cable hole is provided at the center of the bottom of the claw core sleeve 2. The claw core sleeve 2 includes at least two claws 21 spaced apart in the circumferential direction. The lower parts of any two adjacent claws 21 are connected by a positioning rib 23. The inner wall of any positioning rib 23 protrudes from the inner wall of the claw 21 in the axial direction. A slide groove 24 is provided on the outer wall of any positioning rib 23. A gap 22 is provided between the upper parts of any two adjacent claws 21. The claw 21 is elastic, and the upper end of any claw 21 is retracted toward the axis.

[0031] The locking piece 3 is arranged in the claw core sleeve 2, the positioning ridges 23 are arranged one by one in the positioning grooves 34, the claw core sleeve 2 is arranged in the upper inner cavity of the joint body 5, and the steel balls 4 are arranged one by one in the slide grooves 24 of the claw core sleeve 2. The outer wall of the nut 1 is provided with a second external thread 12, and the lower part of the nut 1 is connected to the internal thread 51 of the joint body 5 through the second external thread 12.

[0032] Furthermore, the inner wall of the nut 1 is configured as a second concave cone surface 13 .

[0033] Furthermore, the outer diameter of the upper portion of the joint body 5 is greater than the outer diameter of the lower portion of the joint body 5 .

[0034] Furthermore, six first clamping surfaces 14 are evenly arranged on the outer wall of the nut 1 along the circumferential direction.

[0035] Furthermore, the joint body 5 is evenly provided with six second clamping surfaces 56 along the circumferential direction.

[0036] The first clamping surface 14 and the second clamping surface 56 facilitate clamping by a tool (such as an external hexagonal wrench, etc.).

[0037] Installation process:

[0038] Step 1: The sealing ring 6 is sleeved in the sealing groove 54 of the connector body 5 , all cables pass through the connector body 5 , and the connector body 5 is connected to the device housing through the first external thread 55 .

[0039] Step 2: a plurality of steel balls 4 are respectively placed into the blind holes 52 of the joint bodies 5 , and the steel balls 4 are exposed from the first concave cone surface 53 of the joint body 5 and can rotate freely.

[0040] Step 3: The cable passes through the second cable hole of the claw core sleeve 2, with the claw 21 facing upward.

[0041] Step 4: The two hemispheres 31 of the locking member 3 are combined into a sphere, the first cable holes 33 of the two hemispheres 31 are aligned, the cables pass through the first cable holes 33, and then align the positioning grooves 34 of the two hemispheres 31. The number of the first cable holes 33 can be set to one or more according to the number of cables.

[0042] Step 5: The locking piece 3 enters from the upper opening of the claw 21 of the claw core sleeve 2, and the positioning ridges 23 are embedded in the locking grooves 34 of the locking piece 3, and are aligned and aligned so that the claw core sleeve 2 is sleeved on the locking piece 3.

[0043] Step seven, the claw core sleeve 2 is installed into the upper inner cavity of the joint body 5, and the steel balls 4 enter into each positioning slide groove 24.

[0044] Step six, the front end of the cable passes through the nut 1, and the second external thread 12 of the nut 1 is locked with the internal thread 51 of the connector body 5, completing the installation of the connector.

[0045] After the cable is installed, the positioning ridge 23 is embedded in each locking groove 34 of the locking member 3, and the steel ball 4 enters each slide groove 24. The second concave cone 13 of the nut 1 squeezes the claw 21 of the claw core sleeve 2, and the claw 21 shrinks toward the center. The internal locking member 3 is squeezed and shrinks toward the center. The first cable hole 33 shrinks and squeezes the cable to ensure the seal between the locking member 3 and the cable, so that the cable, the locking member 3, and the claw core sleeve 2 are relatively fixed and locked. Because the steel ball 4 is located in the slide groove 24, the claw core sleeve 2, the locking member 3, and the cable cannot rotate around the circumferential direction of the connector body 1. However, the steel ball 4 can slide slightly along the extension direction of the slide groove 24, so that the claw core sleeve 2, the locking member 3, and the cable can rotate around the circumference of the connector body 1. Figure 2 Make a small turn (oscillate) in the direction of the arrow.

[0046] The cable, locking piece 3, and claw core sleeve 2 can swing, which can reduce the risk of failure of the seal due to uneven force caused by the cable bending angle being too small for a long time, protect the cable that swings back and forth, and keep the connection of the terminal firmly connected. The cable, locking piece 3, and claw core sleeve 2 cannot rotate, which can prevent the cable torque from being transmitted to the terminal post, causing the connection to become loose or damaged.

[0047] In industries such as robot arms, automated production lines, and charging piles, compared with traditional connectors, the advantages of cable locking, anti-rotation, and protection are particularly obvious, especially in cable locking conditions that often rotate and swing.

Claims

1. A cable waterproof connector that can swing and prevent rotation, characterized in that: It includes a connector body, a locking piece, a claw core sleeve and a nut; The joint body is a hollow tube, the upper inner wall of the joint body is provided with an internal thread, the lower outer wall of the joint body is provided with a first external thread, the upper inner cavity wall of the joint body is provided with a first concave cone surface, a plurality of blind holes are provided on the first concave cone surface at intervals along the circumferential direction, and a steel ball is provided in any blind hole, an annular boss is provided on the outer side of the joint body, an annular sealing groove is provided in the bottom surface of the annular boss, and a sealing ring is provided in the sealing groove; The locking member comprises two hemispheres, the circular surfaces of the two hemispheres are fitted together to form a sphere, the circular surfaces of the two hemispheres are respectively provided with a concave cavity, the bottoms of the two concave cavities are respectively provided with a first cable hole, and at least two positioning grooves are arranged at intervals along the circumferential direction on the outer side walls of the hemispheres, and the positioning grooves on the two hemispheres correspond to each other one by one; A second cable hole is provided at the center of the bottom of the claw core sleeve, the claw core sleeve comprises at least two claws spaced apart in the circumferential direction, any two adjacent claw lower parts are connected by a positioning convex ridge, the inner wall of any positioning convex ridge protrudes from the inner wall of the claw in the axial direction, a sliding groove is provided on the outer wall of any positioning convex ridge, a gap is provided between any two adjacent claw upper parts, the claw is elastic, and the upper end of any claw is retracted toward the axial center; The locking piece is arranged in the claw core sleeve, the positioning ridges are arranged one by one in the positioning grooves, the claw core sleeve is arranged in the upper inner cavity of the joint body, the steel balls are arranged one by one in the slide grooves of the claw core sleeve, the outer wall of the nut is provided with a second external thread, and the lower part of the nut is connected to the internal thread of the joint body through the second external thread.

2. A cable swingable and anti-rotation waterproof connector according to claim 1, characterized in that: The inner wall of the nut is configured as a second concave cone surface.

3. The cable swingable and anti-rotation waterproof connector according to claim 1, characterized in that: The outer diameter of the upper part of the joint body is greater than the outer diameter of the lower part of the joint body.

4. The cable swingable and anti-rotation waterproof connector according to claim 1, characterized in that: Six first clamping surfaces are evenly arranged on the outer wall of the nut along the circumferential direction.

5. The cable swingable and anti-rotation waterproof connector according to claim 1, characterized in that: The joint body is evenly provided with six second clamping surfaces along the circumferential direction.

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