CN204706850U - A kind of Junction box assembly - Google Patents

Abstract

The utility model discloses a junction box device, which comprises a cover plate, a connecting plate and screws for connecting the cover plate and the connecting plate, the cover plate is provided with a through hole for the screw to pass through, and the connecting plate There is a stepped hole on the top, and the smaller end of the stepped hole is provided with a thread that can cooperate with the screw, and the screw is sleeved with an elastic spring for preventing the screw from falling off from the through hole of the cover plate. part. The junction box device provided by the utility model effectively avoids the passage of the screw from the cover plate by arranging the elastic component on the screw and utilizing the friction force between the elastic component and the screw. The screw falls off in the hole, thereby avoiding the problem of poor equipment operation reliability caused by the screw falling off, and effectively improving the operating efficiency of the operator. The operation is simple and convenient, and is suitable for various equipment containing junction boxes.

Description

A junction box device

technical field

The utility model relates to the field of junction box equipment, in particular to a junction box device.

Background technique

In the process of installation and maintenance of some equipment, it is necessary to frequently disassemble the cover plate of the junction box device of the equipment. In the process of disassembling the cover plate of the junction box device, the screws need to be removed. Parts are small in size and difficult to place, resulting in the loss of small parts such as screws and washers.

When the environmental conditions are harsh, such as equipment working in oil fields, coal mines, ships and other environments, the working environment requires a high level of protection for the junction box device. Once a part is lost, all the screws on the junction box device need to be replaced before it can be restarted. equipment, causing inconvenience to on-site operators, reducing operational efficiency, and even affecting the reliability of equipment operation.

Therefore, how to prevent the screws in the junction box device from falling is a technical problem that those skilled in the art need to solve.

Utility model content

The purpose of the utility model is to provide a junction box device, which can effectively prevent screws from falling, is simple and convenient to operate, can effectively ensure the reliability of equipment operation, and improves work efficiency.

In order to solve the above technical problems, the utility model provides the following technical solutions:

A junction box device, comprising a cover plate, a connecting plate and screws for connecting the cover plate and the connecting plate, the cover plate is provided with a through hole for the screw to pass through, and the connecting plate has a stepped hole The smaller end of the stepped hole is provided with a thread capable of matching with the screw, and the screw is sleeved with an elastic member for preventing the screw from falling off from the through hole of the cover plate.

Preferably, a gasket is provided between the cover plate and the connecting plate.

Preferably, the elastic component is an O-ring, and the diameter of the outer ring of the O-ring is larger than the diameter of the through hole of the cover plate.

Preferably, the screw is specifically a hexagon socket head cap screw.

Preferably, a washer is provided at the end of the screw near the screw head.

Preferably, at least two stepped holes are provided on the connecting plate, at least two through holes are provided on the cover plate, and the through holes correspond to the stepped holes one by one.

The junction box device provided by the utility model includes a cover plate, a connecting plate and screws for connecting the cover plate and the connecting plate, the cover plate is provided with a through hole for the screw to pass through, and the connecting plate There is a stepped hole, and the smaller end of the stepped hole is provided with a screw thread that can cooperate with the screw, and the elastic member used to prevent the screw from falling off from the through hole of the cover plate is sleeved on the screw . The junction box device effectively prevents the screw from falling off from the through hole of the cover plate by arranging the elastic member on the screw and utilizing the friction force between the elastic member and the screw, thereby The problem of poor equipment operation reliability caused by the falling off of the screws is avoided, and the operating efficiency of operators is effectively improved. The operation is simple and convenient, and is suitable for various equipment containing junction boxes.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of a specific embodiment of the junction box device provided by the present invention;

FIG. 2 is a schematic diagram of an enlarged structure of part A shown in FIG. 1 .

detailed description

The core of the utility model is to provide a junction box device, which can effectively prevent the screw from falling, significantly improve the operating efficiency of the operator, and ensure the safe and reliable operation of the equipment.

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1 and Fig. 2. Fig. 1 is a schematic structural diagram of a specific embodiment of the junction box device provided by the present invention, and Fig. 2 is an enlarged structural schematic diagram of part A shown in Fig. 1 .

In this embodiment, the junction box device includes a cover plate 3, a connecting plate 1 and a screw 4 for connecting the cover plate 3 and the connecting plate 1, the cover plate 3 is provided with a through hole for the screw 4 to pass through, and the connecting plate 1 There is a step hole on the top, and the smaller end of the step hole is provided with a thread that can cooperate with the screw 4 , and the screw 4 is sleeved with an elastic member 5 for preventing the screw 4 from falling off from the through hole of the cover plate 3 . The elastic part 5 is located in the space at the larger end of the step hole, the friction between the elastic part 5 and the screw 4 can prevent the elastic part 5 from falling off from the screw 4, and the size of the elastic part 5 should be larger than the through hole of the cover plate 3 size.

When processing the junction box device, first process the required number of stepped holes on the connecting plate 1, process through holes corresponding to the stepped holes on the cover plate 3, and then insert the screws 4 into the through holes of the cover plate 3 Among them, before screwing the screw 4 into the thread of the stepped hole, the elastic member 5 is inserted into the screw 4, and then the screw 4 is tightened in the threaded hole of the stepped hole to complete the fixed connection between the cover plate 3 and the connecting plate 1. The connecting plate 1 may be provided with at least two stepped holes, and the cover plate 3 may be provided with at least two through holes, and the through holes correspond to the stepped holes one by one. The number of stepped holes and through holes should be set according to specific needs. For example, for a junction box with a large size, multiple stepped holes and through holes are provided. When the junction box is small in size, too many stepped holes are not needed The solid connection between the cover plate 3 and the connection plate 1 can be realized through the through holes, which is not further limited here.

When the cover plate 3 needs to be disassembled, the screw 4 is unscrewed from the threaded hole of the step hole, and the cover plate 3 is separated from the connecting plate 1. At this time, due to the restriction of the elastic member 5, the screw 4 cannot fall off from the through hole. It should be noted here that the size of the elastic member 5 should be larger than the size of the through hole of the cover plate 3 so as to prevent the screw 4 from falling off.

Specifically, the diameter of the threaded hole in the stepped hole can be M8, the diameter of the hole at the larger end of the stepped hole can be Φ13, the cover plate 3 has a through hole of Φ8.5, and the diameter of the screw 4 is also M8. The diameter of the through hole on the cover plate 3 should be slightly larger than the diameter of the screw 4 to facilitate the insertion of the screw 4; Of course, the size of the stepped hole and the through hole can be adjusted as required, and is not limited to the size given in this embodiment.

More specifically, the elastic component 5 can be an O-ring, and the diameter of the outer ring of the O-ring is larger than the diameter of the through hole of the cover plate 3 . The O-shaped sealing ring and the screw 4 can fit together better, and the friction between the O-ring and the screw 4 is relatively large, which can better prevent the screw 4 from falling off. Of course, the elastic member 5 can also be an elastic member of other shapes, such as oval or square, which can be sleeved on the screw 4 and the friction force between the screw 4 can prevent the screw 4 from falling off, and the size is larger than that of the cover plate 3. The elastic member of the hole size can be used, and is not limited to the shape and size given in this embodiment.

In addition, in order to prevent corrosive gas or other impurities from entering the inside of the junction box, causing faults such as short circuits, a sealing gasket 2 is also provided between the cover plate 3 and the connection plate 1. Before the cover plate 3 and the connection plate 1 are fixedly connected, first The gasket 2 is placed between the cover plate 3 and the connection plate 1, and then the cover plate 3 and the connection plate 1 are fixedly connected together.

The screw 4 can specifically be a hexagon socket head cap screw 4 that is easy to disassemble, and the end of the screw 4 near the screw head can also be provided with a gasket to increase the friction between the screw 4 and the cover plate 3 and improve the use of the screw 4. life.

The terminal box device effectively prevents the screw 4 from falling off from the through hole of the cover plate 3 by using the friction force between the elastic member 5 and the screw 4 by arranging the elastic member 5 on the screw 4, thereby preventing the screw 4 from falling off. The impact on the feasibility of equipment operation, and effectively improve the operating efficiency of the operator, the junction box device is simple and convenient to operate, and is suitable for various equipment containing junction boxes.

The junction box device provided by the utility model has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present utility model, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (6)

1. a Junction box assembly, it is characterized in that, comprise cover plate (3), connecting plate (1) and the screw (4) for connecting described cover plate (3) and described connecting plate (1), described cover plate (3) is provided with the through hole passed for described screw (4), (1) has stepped hole to described connecting plate, one end that described stepped hole size is less is provided with the screw thread that can coordinate with described screw (4), described screw (4) is socketed with the elastomeric element (5) for preventing described screw (4) from coming off in the through hole of described cover plate (3).

2. Junction box assembly according to claim 1, is characterized in that, is provided with sealing gasket (2) between described cover plate (3) and described connecting plate (1).

3. Junction box assembly according to claim 1 and 2, is characterized in that, described elastomeric element (5) is specially O RunddichtringO, and the race diameter of described O RunddichtringO is greater than the through-hole diameter of described cover plate (3).

4. Junction box assembly according to claim 3, is characterized in that, described screw (4) is specially soket head cap screw.

5. Junction box assembly according to claim 4, is characterized in that, described screw (4) is provided with pad near one end of head of screw.

6. Junction box assembly according to claim 1, is characterized in that, described connecting plate (1) is provided with at least two stepped holes, and described cover plate (3) is provided with at least two through holes, and described through hole and described stepped hole one_to_one corresponding.