CN114696740A - Anti-warping structure of winding connector of junction box - Google Patents

Abstract

The invention discloses an anti-warping structure of a junction box winding joint, which belongs to the field of photovoltaic junction box structure design. There is a connector fixing device on one side of the junction box base in the length direction. Specifically, the structure of a dustproof plug and a sealing ring can be used. After the cable is wound into a ring, the connector is directly inserted into the dustproof plug of the junction box base. The sealing ring on the top interferes with the inner wall of the connector, so that the base of the junction box, the cable and the connector are combined to form a whole. , The junction box is relatively flat when installed on the backplane, and it is not easy to warp. The half-moon-shaped structure of the cable forms a locking effect on the base of the junction box and the connector. When opening, apply a slight pulling force on the connector end to unplug the connector, which is convenient for customers to install. When the cable is long, fold back several sections in the middle and fasten it with a cable tie. This winding is more efficient than the conventional method and saves the cable tie.

Description

A junction box winding joint anti-warping structure

technical field

The invention belongs to the field of photovoltaic junction box structure design, and particularly relates to an anti-warping structure of a junction box winding joint.

Background technique

With the development of technology and consideration of cost, the requirements for miniaturization of junction boxes have become higher and higher. Under the current trend of miniaturization of junction boxes, photovoltaic junction boxes are small in size and compact in parts. At present, a relatively big problem of this small photovoltaic junction box is that when the junction box is welded on the photovoltaic backplane, due to the small size of the junction box, the welding area between the bottom of the junction box and the photovoltaic backplane is small, and the weight of the small junction box is small. It is lighter, and the swing of the cable connected to the junction box will have a force that cannot be ignored on the small-sized junction box. At this time, the small-sized junction box is prone to warping. When glue is poured into the warped junction box, the glue will It will be full and easy to overflow. These problems make it difficult to miniaturize the size of the junction box. In order to ensure that the junction box is installed without warping as much as possible, the winding and bundling of cables should be as flat and consistent as possible. However, the elasticity and hardness of cables of different lengths are inconsistent under different temperature operating environments, resulting in complicated winding process and high cost.

SUMMARY OF THE INVENTION

The present invention aims to provide an anti-warping structure for a winding joint of a junction box, which is an integrated component including a junction box, a cable and a connector, and aims to solve the welding problem of the current small photovoltaic junction box proposed in the above background technology. It is mainly used for storage, transportation and installation of small-sized junction boxes.

For realizing the above-mentioned technical purpose, the technical scheme of the present invention is as follows:

An anti-warping structure of a junction box winding joint, comprising:

The base of the junction box has a narrow and long shape, and is provided with an outlet device on one side of its length direction, and a connector fixing device on the other side of its length direction;

The cable, one end is connected with the conductive member inside the junction box base via the outlet device, and the other end is connected with the connector;

One end of the connector is connected with the cable, and the other end is fixed on the connector fixing device of the junction box base, and its length direction is consistent with the length direction of the junction box base.

Further, the connector fixing device is a dust plug, the tail of the dust plug is provided with a sealing ring, the connector is inserted into the dust plug, and the sealing ring interferes with the inner wall of the connector.

Further, the sealing ring is tightly fitted with the inner wall of the connector.

Further, the dust plug includes a guide post, and the guide post is in clearance fit with the inner wall of the connector.

Further, the base of the junction box, the cable and the connector form a closed nearly annular structure.

Further, the cable is folded back several times in the middle and then fastened with a cable tie.

Further, the base of the junction box is matched with the cover of the junction box, a diode and a conductive member are installed inside the base of the junction box, and a busbar is welded on the conductive member, and the busbar extends from the photovoltaic module and is inserted into the junction box. The interior is post-welded, and the junction box is filled with potting glue to form a seal after the busbar is connected.

Further, the length of the junction box base is close to the length of the connector, and the ratio ranges from 0.7 to 1.3, wherein the junction box base does not include a connector fixing device.

Owing to adopting the above-mentioned technical scheme, the beneficial technical effect of the present invention is:

One side of the junction box base in the longitudinal direction of the present invention is provided with a connector fixing device. For example, a conventional snap device can be used. A better solution is to use a dust plug that is inserted into the connector. There is a sealing ring. After the cable is wound into an arc, the connector is directly inserted into the dustproof plug of the junction box base. The sealing ring on the dustproof plug interferes with the inner wall of the connector. This structure makes the junction box base, cable, The connector and the connector fixing device are combined with each other to form a closed whole, forming an annular structure similar to a half-moon. Since the length of the base of the junction box is close to the length of the connector, it is beneficial to balance the weight of the cable and overcome the swing of the cable. The junction box and the connector are relatively flat when they are installed on the backplane, and are not prone to warping . In addition, the present invention uses a sealing ring to fix the connector. When fixing, the sealing ring tightly fits with the inner wall of the connector, and the guide post of the dust plug forms a clearance fit with the inner wall of the connector, so that the swing amplitude is small. The arc-shaped structure of the cable objectively has a locking effect on the base of the junction box and the connector. The invention does not need to be fixed with a cable tie when tying a short cable, improves the efficiency and saves the cost, and the connector can be unplugged by applying a slight pulling force on the connector end when opening, which is convenient for customers to install. When the cable is long, fold several sections in the middle and fasten it with a cable tie, and then insert the connector on the dust plug on the base of the junction box. This winding is more efficient than the conventional method, and also saves the cable tie. Very convenient when storing.

The advantages of the present invention will be given in the description below in the detailed description section, and some will be apparent from the following description, or learned by practice of the present invention.

Description of drawings

FIG. 1 is a schematic structural diagram of the connector of the present invention when it is not connected to the base of the junction box.

FIG. 2 is a schematic structural diagram of the connector of the present invention when it is inserted into the base of the junction box.

FIG. 3 is a schematic structural diagram of the cable of the present invention folded in the middle and fastened with a cable tie when the cable is long.

Description of reference numerals: 1—junction box base, 2—cable, 3—connector, 4—dust plug, 5—sealing ring, 6—tie.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to Figures 1 to 3, the present invention is an embodiment of a junction box winding joint anti-warping structure, including a junction box base 1, a cable 2, a connector 3, a dust plug 4, a sealing ring 5, and Optional cable ties 6.

As shown in Figures 1 and 2, the junction box base 1 has a narrow and long shape, a wire outlet device is provided on one side of the length direction of the junction box base 1, and a connector fixing device is provided on the other side of the length direction, specifically for dustproofing Plug 4, the tail of the dust plug 4 is provided with a sealing ring 5; one end of the cable 2 is connected to the conductive member inside the junction box base 1 through the outlet device, and the other end is connected to the connector 3; the length of the connector 3 is the same as The length of the junction box base 1 is close, and one end of the connector 3 is connected to the cable 2, and the other end is inserted into the dustproof plug 4 of the junction box base 1. At the same time, the inner wall of the connector 3 interferes with the sealing ring 5 on the dustproof plug 4, thereby Fix the connector 3 on one side of the junction box base 1 . The sealing ring 5 is tightly fitted with the inner wall of the connector 3, and the guide column of the dust plug 4 is in clearance fit with the inner wall of the connector 3. The dust plug 4 and the sealing ring 5 not only play the role of fixing the connector 3, but also play a role in fixing the connector 3. The function of preventing sediment from entering the connector 3.

As shown in FIG. 2 , after the cable 2 is wound into a ring, the connector 3 is directly inserted into the dust plug 4 of the base 1 of the junction box. When the cable 2 is short, it is not necessary to fix it with a cable tie, which improves the efficiency and saves the cost. When opening, apply a slight pulling force on the connector 3 end to unplug the connector 3, which is convenient for customers to install.

As shown in FIG. 3 , when the cable 2 is long, it is folded back several sections in the middle and fastened with a cable tie 6, and the connector 3 is then inserted into the dust plug 4 of the junction box base 1. This winding is more efficient than the conventional method. Higher and also save on cable ties.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (8)

1. The utility model provides a terminal box wire winding connects proof warp curved structure which characterized in that includes:

the terminal box base is in a narrow and long shape, one side in the length direction of the terminal box base is provided with a wire outlet device, and the other side in the length direction of the terminal box base is provided with a connector fixing device;

one end of the cable is connected with the conductive piece inside the junction box base through the wire outlet device, and the other end of the cable is connected with the connector;

and one end of the connector is connected with the cable, the other end of the connector is fixed on a connector fixing device of the junction box base, and the length direction of the connector is consistent with that of the junction box base.

2. The anti-warping structure of claim 1, wherein the connector fixing means is a dust plug, a sealing ring is provided at a rear portion of the dust plug, the connector is inserted into the dust plug, and the sealing ring interferes with an inner wall of the connector.

3. The anti-warping structure of claim 2, wherein the sealing ring is a tight fit with the inner wall of the connector.

4. The anti-warping structure of claim 2, wherein the dust plug includes a guiding post that is a clearance fit with an inner wall of the connector.

5. The anti-warping structure of claim 1, wherein the base, the cable and the connector form a closed loop.

6. The anti-warping structure of the terminal box wire winding connector as claimed in claim 5, wherein the cable is folded back in the middle and tied with a tie.

7. The anti-warping structure of the winding joint of the junction box as claimed in claim 1, wherein the junction box base is matched with the junction box cover, the diode and the conductive member are mounted inside the junction box base, the conductive member is welded with a bus bar, the bus bar is welded after being extended out of the photovoltaic module and inserted into the junction box, and the junction box is filled with the pouring sealant to form a seal after being connected with the bus bar.

8. The anti-warping structure of claim 1, wherein the length of the terminal box base is close to the length of the connector in a ratio of 0.7-1.3, and the terminal box base does not include a connector fixing device.

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