Retaining nut assembly for cable connector

Abstract

The utility model provides a retaining nut assembly for a cable connector, which comprises a main body bolt and a nut, and the nut is in threaded connection with the main body bolt. A connecting thread is arranged on the upper portion of the body bolt, and a reinforcing positioning rib, a retaining ratchet hook and a positioning ratchet claw are arranged at the bottom of the connecting thread. According to the retaining nut assembly for the cable connector provided by the utility model, the retaining function of the main body bolt in the nut can be enhanced by adding the positioning ratchet claw, and meanwhile, the retaining rod stretches across the interior of the nut, and the two ends of the retaining rod abut against the interior of the ratchet teeth to interfere with each other, so that the nut can be prevented from further rotating and loosening; and the position of the main body bolt in the nut is determined by utilizing the strong positioning rib, so that the connection strength is improved.

Description

Technical Field

[0001] The utility model relates to a connector, in particular to a connector between cables for photovoltaic use. Background Art

[0002] At present, photovoltaic power generation is widely used nowadays. Since the popularization of photovoltaic power generation requires connecting the power generation circuit of a photovoltaic panel to a storage or power grid for use, cables are needed to connect between the photovoltaic panel and an external circuit.

[0003] Conventional connectors are all composed of terminals and a housing. The housing is made of insulating materials such as rubber and plastic, which is used to determine the position of the terminals and protect the safety of the terminals. During the assembly process, the metal terminals are fixed inside the housing through a connection relationship. Since the metal terminals are electrically connected to each other, they cannot be completely positioned with the housing. Existing products all use fixing devices added to the housing to ensure installation positioning, such as components like bolts and nuts.

[0004] To enhance the assembly stability and reliability of the nut assembly, usually the nut binding force is increased. During this process, ratchet teeth and a ratchet hook are added to the nut assembly to prevent the nut from reversing during use. Although this ensures that the nut cannot reverse, there is still a rotational space between the ratchet hook and the ratchet teeth. Therefore, if the nut is not tightened or loosened, it will rotate forward. The forward rotation without external force will further exacerbate the loosening of the nut, resulting in the unreliability of the entire assembly. At the same time, since the ratchet hook is added, the outer diameter of the bolt will be smaller than the inner hole of the nut, and the frequent unrestricted rotation will also cause the bolt to shift inside the nut, ultimately resulting in the loosening of the assembly and problems with the connection. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an anti-back-off nut assembly for a cable connector, which reduces the gap between the bolt and the nut by adding positioning on the bolt, and at the same time adds a ratchet catch at the other end of the ratchet hook, effectively reducing the rotation of the nut and improving the positioning between the nut and the bolt.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a back-retraction nut assembly for a cable connector, comprising a main bolt and a nut, wherein the nut and the main bolt are threadedly connected; a connecting thread is arranged on the upper part of the main bolt, and a reinforcing positioning rib, a back-retraction ratchet hook and a positioning ratchet claw are arranged at the bottom of the connecting thread; the reinforcing positioning rib is located on the bottom outer circle of the main bolt, is distributed in an arc shape on the main bolt, and is fixedly connected to the main bolt; the back-retraction ratchet hook is located on the outer side of the bottom of the main bolt, has a barbed hook shape, and is fixedly connected to the main bolt; a positioning ratchet claw is arranged at one end of the back-retraction ratchet hook, and the positioning ratchet claw is fixedly connected to the back-retraction ratchet hook; ratchet teeth are arranged in the inner hole of the nut, which cooperate with the back-retraction ratchet hook and the positioning ratchet claw.

[0007] Furthermore, two reinforcing positioning ribs are provided, symmetrically distributed on the outer circle of the main bolt, and have an arc-shaped appearance. The outer circle thereof conflicts with the ratchet teeth in the nut, thereby limiting the position of the main bolt in the nut.

[0008] Furthermore, the anti-retraction ratchet hook and the positioning ratchet catch are both fixed on the anti-retraction rod, the anti-retraction rod is fixedly connected to the main body bolt, the anti-retraction rod is distributed laterally, and the anti-retraction ratchet hook and the positioning ratchet catch are distributed at both ends of the anti-retraction rod.

[0009] Furthermore, the anti-retraction ratchet hook, the positioning ratchet catch and the anti-retraction rod correspond to each other, and two are provided and symmetrically distributed on the outer circle of the main bolt.

[0010] Furthermore, the back-stop rod spans across several ratchet teeth in the nut.

[0011] Furthermore, the barb of the anti-retraction ratchet hook extends outward and cooperates with the ratchet teeth of the nut. When the nut rotates clockwise, the anti-retraction ratchet hook and the ratchet teeth do not interfere with each other. When the nut rotates counterclockwise, the anti-retraction ratchet hook will hook the ratchet teeth, causing interference and preventing it from rotating.

[0012] Furthermore, one end of the positioning ratchet has a chamfered shape and cooperates with the ratchet teeth. When the nut rotates clockwise, the positioning ratchet and the ratchet teeth do not interfere with each other. When the nut rotates counterclockwise, the positioning ratchet will press against the ratchet teeth, forming interference and preventing it from rotating. After the nut is tightened, the positioning ratchet will press against the ratchet teeth and the anti-retraction ratchet hook, forming a lateral interference arrangement inside the nut, so that the nut cannot continue to rotate.

[0013] Compared with the prior art, a locking nut assembly for a cable connector provided by the utility model can strengthen the anti-rotation function of the main bolt in the nut by adding positioning ratchet claws. At the same time, since the anti-rotation rod spans inside the nut and both ends are in contact with the ratchet teeth, interference is formed to prevent further rotation of the nut and prevent it from loosening. By using the strengthening positioning ribs to determine the position of the main bolt in the nut, the connection strength is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shows a schematic assembly structure diagram of the utility model.

[0015] Figure 2 Shows a cross-sectional view of the utility model.

[0016] Wherein: 1. Main bolt, 2. Nut, 3. Strengthening positioning rib, 4. Anti-rotation ratchet hook, 5. Positioning ratchet claw, 6. Anti-rotation rod, 7. Ratchet teeth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] As shown in the figure, a locking nut assembly for a cable connector includes a main bolt 1 and a nut 2, and the nut 2 and the main bolt 1 are threadedly connected; a connecting thread is provided on the upper part of the main bolt 1, and a strengthening positioning rib 3, an anti-rotation ratchet hook 4 and a positioning ratchet claw 5 are provided at the bottom of the connecting thread; the strengthening positioning rib 3 is located on the outer circumference of the bottom of the main bolt 1, is arc-shapedly distributed on the main bolt 1, and is fixedly connected to the main bolt 1; the anti-rotation ratchet hook 4 is located on the outer side of the bottom of the main bolt 1, has an inverted hook shape, and is fixedly connected to the main bolt 1; a positioning ratchet claw 5 is provided at one end of the anti-rotation ratchet hook 4, and the positioning ratchet claw 5 is fixedly connected to the anti-rotation ratchet hook 4; ratchet teeth 7 are provided in the inner hole of the nut 2 and are matched with the anti-rotation ratchet hook 4 and the positioning ratchet claw 5.

[0018] Further, two strengthening positioning ribs are provided, symmetrically distributed on the outer circumference of the main bolt 1, having an arc shape, and the outer circumference thereof is in contact with the ratchet teeth 7 in the nut 2 to limit the position of the main bolt 1 in the nut 2.

[0019] Further, the anti-rotation ratchet hook 4 and the positioning ratchet claw 5 are both fixed on the anti-rotation rod 6, the anti-rotation rod 6 is fixedly connected to the main bolt 1, the anti-rotation rod 6 is horizontally distributed, and the anti-rotation ratchet hook 4 and the positioning ratchet claw 5 are distributed at both ends of the anti-rotation rod 6.

[0020] Further, the anti-rotation ratchet hook 4, the positioning ratchet claw 5 and the anti-rotation rod 6 are provided in one-to-one correspondence and are provided with two, symmetrically distributed on the outer circumference of the main bolt 1.

[0021] Furthermore, the stop rod 6 spans across several ratchet teeth 7 in the nut 2 .

[0022] Furthermore, the barb of the anti-retraction ratchet hook 4 extends outward and cooperates with the ratchet teeth 7 of the nut 2. When the nut 2 rotates clockwise, the anti-retraction ratchet hook 4 and the ratchet teeth 7 do not interfere with each other. When the nut 2 rotates counterclockwise, the anti-retraction ratchet hook 4 will hook the ratchet teeth 7, forming interference and preventing it from rotating.

[0023] Furthermore, one end of the positioning ratchet 5 has a chamfered shape, which cooperates with the ratchet teeth 7. When the nut 2 rotates clockwise, the positioning ratchet 5 and the ratchet teeth 7 do not interfere with each other. When the nut 2 rotates counterclockwise, the positioning ratchet 5 will press against the ratchet teeth 7, forming interference and preventing it from rotating. After the nut 2 is tightened, the positioning ratchet 5 will press against the ratchet teeth 7 and the anti-retraction ratchet hook 4, forming a lateral interference arrangement inside the nut 2, so that the nut 2 cannot continue to rotate.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than a restrictive technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution should be included in the scope of the claims of the utility model.

Claims

1. A locking nut assembly for a cable connector, characterized in that: It includes a main bolt and a nut, and the nut and the main bolt are threadedly connected; a connecting thread is arranged on the upper part of the main bolt, and a reinforcing positioning rib, a back-stop ratchet hook and a positioning ratchet claw are arranged at the bottom of the connecting thread; the reinforcing positioning rib is located on the bottom outer circle of the main bolt, is distributed in an arc shape on the main bolt, and is fixedly connected to the main bolt; the back-stop ratchet hook is located on the outside of the bottom of the main bolt, has a barbed hook shape, and is fixedly connected to the main bolt; a positioning ratchet claw is arranged at one end of the back-stop ratchet hook, and the positioning ratchet claw is fixedly connected to the back-stop ratchet hook; ratchet teeth are arranged in the inner hole of the nut, which cooperate with the back-stop ratchet hook and the positioning ratchet claw.

2. A cable connector locking nut assembly according to claim 1, characterized in that: The reinforcing positioning ribs are provided with two, symmetrically distributed on the outer circle of the main bolt, and present an arc shape. The outer circle thereof conflicts with the ratchet teeth in the nut, limiting the position of the main bolt in the nut.

3. A cable connector locking nut assembly according to claim 1, characterized in that: The anti-retraction ratchet hook and the positioning ratchet catch are both fixed on the anti-retraction rod, the anti-retraction rod is fixedly connected with the main body bolt, the anti-retraction rod is distributed laterally, and the anti-retraction ratchet hook and the positioning ratchet catch are distributed at both ends of the anti-retraction rod.

4. A cable connector locking nut assembly according to claim 3, characterized in that: The anti-retraction ratchet hook, the positioning ratchet catch and the anti-retraction rod correspond to each other, and two of them are provided and symmetrically distributed on the outer circle of the main body bolt.

5. A cable connector locking nut assembly according to claim 4, characterized in that: The backstop rod spans across several ratchet teeth in the nut.

6. A cable connector locking nut assembly according to claim 1, characterized in that: The barb of the anti-retraction ratchet hook extends outward and cooperates with the ratchet teeth of the nut. When the nut rotates clockwise, the anti-retraction ratchet hook and the ratchet teeth do not interfere with each other. When the nut rotates counterclockwise, the anti-retraction ratchet hook will hook the ratchet teeth, forming interference and preventing it from rotating.

7. A locking nut assembly for a cable connector according to claim 1, characterized in that: One end of the positioning ratchet has a chamfered shape and cooperates with the ratchet teeth. When the nut rotates clockwise, the positioning ratchet and the ratchet teeth do not interfere with each other. When the nut rotates counterclockwise, the positioning ratchet will press against the ratchet teeth, forming interference and preventing it from rotating. After the nut is tightened, the positioning ratchet will press against the ratchet teeth and the anti-retraction ratchet hook, forming a lateral interference arrangement inside the nut, so that the nut cannot continue to rotate.

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