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Novel fan junction box

A junction box and fan technology, which is applied in the field of transformers, can solve the problems that the terminals cannot be effectively protected, the opening at the bottom of the box enters the junction box, and the opening of the base is not tightly sealed, so as to reduce the risk of water ingress, The effect of light weight and simple structure

Pending Publication Date: 2019-04-23
SHAANXI SPACEFLIGHT XINO MEILING ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When wiring, it is necessary to first pass the power cord through the outlet 4 of the box cover 1, and then connect it to the terminal 3 on the base 2. In this way, when the site is relatively small or the wiring head is short, the box cover 1 will connect the wiring At the same time, when opening or covering the box cover 1, the base 2 is small and easy to cause collision, so that the terminal cannot be effectively protected; the motor lead-out wire needs to enter the junction box from the opening at the bottom of the junction box, and there is a base The hole is not sealed tightly, which leads to the risk of water ingress; and the junction box cover of the traditional DBF2 series transformer fan is bulky and heavy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A new fan junction box, at least including a cover plate 7 and a box body 6, the box body 6 is a square box, the side wall of the box body 6 is provided with an outlet 4 and an inlet 5 for connecting cables, the box The inside of the body 6 is fixedly connected to the terminal 3 by screws, and the cables of the wire outlet 4 and the wire inlet 5 are connected to the terminal 3 respectively, and the cover plate 7 is sealed and fixedly connected to the box body 6 by screws.

[0033] The cable wires are divided into power wires and motor lead wires, the wire outlet 4 is connected to an external power wire, and the wire inlet 5 is connected to the motor lead wires. The present invention sets the wire outlet 4 and the wire inlet 5, avoiding the need for the motor lead wire to enter the junction box from the opening at the bottom of the junction box, and there is a risk of water ingress due to poor sealing of the opening of the base.

[0034] The connection terminal of the pr...

Embodiment 2

[0036] On the basis of Example 1, such as image 3 and Figure 4 As shown, the wire outlet 4 is arranged on the left side of the box body 6, the wire inlet 5 is arranged in front of the box body 6, and the wire outlet 4 and the wire inlet 5 are at 90 degrees; the wire outlet 4 and the wire inlet 5 have the same structure, Their outer ends all stretch out box body 6 to form boss, and the bottom of boss is semicircle, and top is plane, and through hole is arranged in the middle, and internal thread is arranged in through hole.

[0037] The four corners of the end face of the box body 6 are respectively provided with a cover plate installation screw hole 10, and the cover plate installation screw hole 10 is a blind hole; the cover plate 7 is provided with 4 cover plate installation holes 8, 4 The cover mounting holes 8 correspond to the four cover mounting screw holes 10, and the cover mounting holes 8 are through holes. The bottom of the box body 6 is a plane.

Embodiment 3

[0039] On the basis of Embodiment 1 or 2, the cable outlet 4 and the cable inlet 5 are threadedly connected with a waterproof cable lock for locking the cables. Waterproof cable lock head is prior art, belongs to the well-known technology of those skilled in the art. Available in the market and online.

[0040] Such as Figure 4 , Figure 5 and Figure 6 As shown, the cover plate 7 is a square, and arc-shaped grooves are arranged on the four corners of the upper surface of the cover plate, and the four cover plate installation holes 8 are respectively arranged in the four arc-shaped grooves; The surface is provided with protrusions along the periphery, and a cover plate gasket 9 is arranged inside the protrusions; as Figure 7As shown, the cover plate gasket 9 is square-shaped, and holes corresponding to the cover plate mounting holes 8 are provided on its four corners.

[0041] The middle position of the bottom in the box body 6 is provided with a cross-shaped mounting s...

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Abstract

The invention relates to a novel fan junction box. The novel fan junction box at least comprises a cover plate and a box body. The junction box is characterized in that the box body is a square box. The side wall of the box body is provided with a wire outlet and a wire inlet which are used for being connected with cables. The interior of the box body is fixedly connected with a wiring terminal through screws. The cables, which pass through the wire inlet and the wire outlet, are respectively connected to the wiring terminal. The cover plate is fixedly connected with the box body through screws in a sealed mode. The junction box is safe and reliable in structure, simple, light, and good in waterproof performance. Meanwhile, the wiring terminal is arranged in the box body, so that the wiring terminal is protected. The waterproof performance of the junction box is improved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a novel fan junction box. Background technique [0002] The transformer cooling fan is mainly suitable for the radiator cooling system of extra-large, large and medium-sized transformers, which can increase the capacity of the transformer and prolong the service life of the transformer. Since the transformer needs to be installed and used in the open air, the cooling fan is required to have good outdoor working performance, and the electrical protection level must meet IP55. [0003] DBF2 series transformer fans are manufactured according to the industry standard JB / T9642 of the People's Republic of China and are specially used for transformer cooling systems. The connection form of the fan is direct connection, the junction box is installed on the fan cylinder, the motor lead-out wire enters the junction box from the bottom of the junction box through the threading hole on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/22
CPCH02K5/225
Inventor 魏武岗庞海洋张永强秦全卫王宇宁邹波杨华
Owner SHAANXI SPACEFLIGHT XINO MEILING ELECTRIC
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