CN201717439U - Sealing nut for connection of solar battery cables - Google Patents

Abstract

The utility model discloses a sealing nut for solar battery cable connection, which comprises a nut body with an inner cavity screwed on the nut butt joint, the inner cavity of the nut body is provided with a photovoltaic cable. The rubber seal and the tightening ring on the outer surface of the rubber seal, the inner cavity of the nut body has a conical section, and one end of the tightening ring matching the conical section of the nut body has a protruding ramp, which is tightened on the nut body During the process of the nut butt joint, the inclined surface of the conical section presses the protruding inclined platform of the tightening ring, and the tightening ring shrinks radially so as to press the front end of the rubber seal against the passing photovoltaic cable . The utility model has good sealing performance, convenient installation and disassembly, not only convenient for manual operation, but also suitable for operation with wrench tools.

Description

Sealing nut for solar cell cable connection

technical field

The utility model relates to the technical field of solar battery components, in particular to a sealing nut for connecting solar battery cables.

Background technique

At present, there are many unreasonable places in the sealing nuts used for solar cell module cable connection on the market. First, the sealing element is an annular cylinder. After assembly, there is a large gap between the inner wall and the cable. When the nut is tightened Finally, there is still a gap between the cable and the seal, which leaves a hidden danger of water ingress. On the other hand, the tightening device for the cable inside the seal nut is a vertical long arm, and the structure is relatively hard. After the head of the tightening device is tightened, there is still a large gap at the end of the tightening device, which makes it difficult for the annular seal to achieve an ideal sealing effect. At the same time, it is very difficult and laborious for the operator to tighten the nut. There are only anti-slip lines on the surface, and there is no fastening surface for tools to be clamped, which is not conducive to outdoor work.

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies in the prior art, and provide a sealing nut for solar cell cable connection with good sealing performance and convenient installation and disassembly.

The technical solution adopted by the utility model to solve the technical problem is: a sealing nut for solar cell cable connection, including a nut body with an inner cavity that can be screwed on the nut butt joint, and the inner cavity of the nut body There are rubber seals that can pass through photovoltaic cables and tightening rings that are sleeved on the outer surface of the rubber seals. The inner cavity of the nut body has a conical section, and one end of the tightening ring that matches the conical section of the nut body It has a protruding inclined platform. When the nut body is tightened on the nut butt joint, the inclined surface of the conical section presses the protruding inclined platform of the tightening ring, and the tightening ring shrinks radially to press the front end of the rubber seal. Tightly attach to the passed photovoltaic cable.

Specifically, the protruding inclined platform of the tightening ring has long-arm jaws oblique to the center of the tightening ring evenly distributed in the circumferential direction, and there is a gap between the long-arm jaws. During the tightening process of the nut body, the nut body The inclined surface of the conical section of the cavity presses the end of the long arm jaw, and the long arm jaw shrinks radially to fill the gap between the long arm jaws, and the inner hole wall of the long arm jaw formed after the contraction compresses the rubber ring The outer wall of the sealing member makes the rubber sealing member press tightly on the passing photovoltaic cable.

Further, the rear end of the rubber seal has a sealing circular platform, and during the tightening process of the nut body, the sealing circular platform is pressed into the sealing groove provided on the nut butt joint.

In order to facilitate manual tightening or clamping and tightening with tools, the outer surface of the nut body is provided with at least 4 finger-shaped concave planes equally divided in the circumferential direction.

The beneficial effects of the utility model are: the utility model uses the oblique thrust generated by the axial movement of the nut body during the tightening process to push the rubber seal to shrink in the radial direction, so that the rubber seal is pressed against the pierced photovoltaic On the cable, a better sealing effect is achieved. At the same time, the overall installation and connection are more convenient and fast. The finger-shaped concave plane arranged in equal parts on the outer surface of the nut body is not only convenient for manual operation, but also convenient for use. Hold the tool.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the tightening ring of the utility model.

Fig. 3 is a left side view of Fig. 2 .

In the figure 1. Nut body 11. Conical section 12. Concave plane 13. Conical section 2. Rubber seal 21. Sealing round platform 3. Tightening ring 31. Protruding inclined platform 32. Long arm gripper

Detailed ways.

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

As shown in Figures 1 to 3, a sealing nut for solar cell cable connection includes a nut body 1 that can be screwed on the nut butt joint and has an inner cavity, and the inner cavity of the nut body 1 is provided with The rubber seal 2 that can pass through the photovoltaic cable and the tightening ring 3 on the outer surface of the rubber seal 2, the inner cavity of the nut body 1 includes a threaded section 13 and a conical section 11, and the conical section of the nut body 1 11. One end of the matching tightening ring 3 has a protruding inclined platform 31, and the protruding inclined platform 31 has 12 long-arm jaws 32 that are uniformly distributed in the circumferential direction relative to the center of the tightening ring, and each two long-arm jaws There is a certain oblique gap between 32. When the nut body 1 is tightened on the nut butt joint through its threaded section 13, the inclined plane of the conical section 11 in the inner cavity of the nut body 1 presses the end of the long arm jaw 32, The long-arm jaws 32 are radially contracted to fill the gaps between the long-arm jaws 32, and the inner hole wall of the long-arm jaws 32 formed after the contraction completely and evenly compresses the outer wall of the front end of the rubber seal 2 in an annular manner. The rubber sealing member 2 is pressed against the passing photovoltaic cable, so as to realize the sealing between the sealing rubber member 2 and the photovoltaic cable.

The rubber seal 2 has an inner hole that passes through the photovoltaic cable. The inner hole has a certain taper. The aperture where the photovoltaic cable penetrates is relatively large, and then gradually shrinks until it tightly wraps the photovoltaic cable. The rubber seal The outer wall of 2 is a cylindrical surface with a certain slope, which matches the inner wall of the tightening ring 3. The rear end of the rubber seal 2 has a sealing round platform 21. When the nut body 1 is tightened on the nut butt joint, the sealing The round platform 21 is pressed into the sealing groove provided on the nut butt joint, so as to realize the sealing between the rubber seal 2 and the nut butt joint.

On the outer surface of the nut body, at least 4 finger-shaped concave planes 12 are arranged in equal parts in the circumferential direction. The wrench snaps in to tighten or loosen the nut.

When the utility model is sealed and assembled, the nut body 1, the tightening ring 3, and the sealing rubber part 2 are set on the photovoltaic cable in sequence, and then one end of the photovoltaic cable is inserted into the inner hole of the cable connector, and then the rubber The sealing round platform 21 at the rear end of the sealing member 2 is placed in the sealing groove of the nut butt joint, and then the tightening ring 3 is looped on the sealing rubber member 2 in turn, and the nut body 1 is threaded to the nut butt joint. During the threaded connection between the nut body 1 and the nut butt joint, when the conical section 11 of the inner cavity of the nut body 1 moves in the axial direction, the protruding ramp 31 of the tightening ring 3, that is, the long-arm jaw The end of 32 generates a radial compressive force, causing the long-arm jaw 32 to shrink radially, and the inner hole wall of the long-arm jaw 32 completely and evenly compresses the outer wall of the front end of the rubber seal 2 in a ring, and the rubber seal 2 Compressed on the passed photovoltaic cable, after the nut body 1 and the nut butt joint are screwed tightly, the sealing round platform 21 at the rear end of the rubber seal 2 is simultaneously pressed against the sealing groove on the nut butt joint Inside, so as to realize the sealing between the sealing rubber part 2 and the photovoltaic cable, and between the rubber sealing part 2 and the nut butt joint. The utility model has good sealing performance, convenient and fast installation and disassembly.

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present utility model. Equivalent changes or modifications made by the spirit of the present utility model shall be covered within the protection scope of the present utility model.

Claims (4)

1. A sealing nut for solar cell cable connection, comprising a nut body (1) that is screwed on the nut butt joint and has an inner cavity, and is characterized in that: the inner cavity of the nut body (1) is provided with The rubber seal (2) of the photovoltaic cable and the tightening ring (3) that is looped on the outer surface of the rubber seal (2) can be passed through. The inner cavity of the nut body (1) has a conical section (11), which is connected with the The conical section (11) of the nut body (1) is matched with a protruding inclined platform (31) at one end of the tightening ring (3). When the nut body (1) is tightened on the nut butt joint, the conical section The inclined plane of (11) presses the protruding ramp (31) of the tightening ring (3), and the tightening ring (3) shrinks radially so as to press the front end of the rubber seal (2) against the passed photovoltaic line cable. 2. The sealing nut for solar cell cable connection according to claim 1, characterized in that: the protruding inclined platform (31) of the tightening ring (3) has There is a gap between the long-arm jaws (32) in the center, and there is a gap between the long-arm jaws (32). During the tightening process of the nut body (1), the conical section (11) of the inner cavity of the nut body (1) The inclined plane presses the end of the long-arm jaw (32), and the long-arm jaw (32) shrinks radially to fill the gap between the long-arm jaws (32). The hole wall annularly presses the outer wall of the rubber seal (2), so that the rubber seal (2) is pressed against the passing photovoltaic cable. 3. The sealing nut for solar cell cable connection according to claim 1, characterized in that: the rear end of the rubber seal (2) has a sealing round platform (21), and the nut body (1) is tightened during the tightening process. Among them, the sealing round platform (21) is compressed in the sealing groove that the nut butt joint has. 4. The sealing nut for solar cell cable connection according to claim 1, characterized in that: the outer surface of the nut body (1) is provided with at least 4 finger-shaped concave planes ( 12).

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