CN211670834U - Bus box with screw electricity insulation structure - Google Patents

Abstract

The utility model relates to a take collection flow box of screw electricity isolation structure, the inside bottom surface of box forms a plurality of screw mount pads, the bottom plate sets up on the screw mount pad, be provided with screw and nut on the screw mount pad, form first mounting hole on the screw mount pad, the bottom plate is just to the position formation second mounting hole of first mounting hole, the screw passes first mounting hole and second mounting hole and the upper end of screw in proper order and extends to the bottom plate top, the upper end at the screw is connected to the nut, be provided with a plurality of screw electricity isolation components on the bottom plate, screw electricity isolation components is including insulating mounting pad and cap, the mounting pad sets up between bottom plate and nut, the mounting pad bottom downwardly extending forms the partition portion that is used for keeping apart bottom plate and screw, partition portion sets up in the second mounting hole, form the cap cavity in, the cap is connected on the mounting pad, the upper end setting of nut and screw is in the cavity. The utility model discloses the collection flow box realizes the electrical isolation of bottom plate and screw, has improved the security that the collection flow box used.

Description

Bus box with screw electricity insulation structure

Technical Field

The utility model relates to a photovoltaic power generation's technical field that converges especially relates to a take collection flow box of screw insulation structure.

Background

In a solar photovoltaic power generation system, in order to reduce connecting lines between a solar photovoltaic cell array and an inverter, a user can connect a certain number of photovoltaic cells with the same specification in series to form photovoltaic strings, then connect the photovoltaic strings in parallel to an intelligent photovoltaic combiner box, and after the photovoltaic strings are combined in the intelligent photovoltaic combiner box, the photovoltaic strings are output through a direct current breaker and matched with the photovoltaic inverter for use to form a complete photovoltaic power generation system, so that grid connection with commercial power is realized. The existing photovoltaic combiner box generally comprises a box body and a bottom plate arranged in the box body, wherein the bottom plate is used for installing electric appliances such as a circuit breaker, a control module and a fuse, the photovoltaic combiner box penetrates through the bottom plate and the box body through screws and is fixed on an external metal sheet, although the connection of the positioning structure is stable, if the electric appliances inside the combiner box are subjected to electric leakage accidents, the electric leakage accidents are easily caused by the fact that people get an electric shock through the bottom plate, the screws and the metal sheet are transmitted to the outside, and certain potential safety hazards exist when the combiner box is used.

Disclosure of Invention

In view of this, an object of the present invention is to provide a bus box with screw electricity isolation structure, even when the electrical appliance inside the bus box leaks electricity, the electrical appliance will not be transmitted to the external copper plate through the conductor, so as to improve the safety performance of the bus box.

In order to achieve the above purpose, the utility model adopts the confluence box with the screw electricity insulation structure, which comprises a box body and a bottom plate, wherein a plurality of screw installation seats are formed on the bottom surface inside the box body, the bottom plate is arranged on the screw installation seats, screws and nuts are arranged on the screw installation seats, first installation holes are formed on the screw installation seats, second installation holes are formed at the positions, just opposite to the first installation holes, of the bottom plate, the screws sequentially penetrate through the first installation holes and the second installation holes, the upper ends of the screws extend to the upper part of the bottom plate, the nuts are connected at the upper ends of the screws, a plurality of screw electricity insulation assemblies are arranged on the bottom plate, each screw electricity insulation assembly comprises an insulated mounting pad and a cap, the mounting pad is arranged between the bottom plate and the nuts, the bottom of the mounting pad extends downwards to form a separation part for isolating the bottom plate and the screws, and the separation part is arranged, a cavity is formed in the cap, the cap is connected to the mounting pad, and the upper ends of the nut and the screw are arranged in the cavity.

The insulating mounting pad isolates the screw from the bottom plate, and an insulating cap is arranged on the mounting pad to wrap the nut and the screw inside, so that the screw-nut loop for connecting and fixing is electrically isolated from the bottom plate in the box body. The utility model discloses a set up insulating screw and separate electric subassembly with screw, nut and keep apart with the bottom plate respectively, even on the electrical apparatus in the collection flow box takes place electric leakage and leakage current transmits the bottom plate, can not transmit the outside from the return circuit of screw and nut yet, improved the security that the collection flow box used greatly, avoid personnel to miss to touch the external mounting position and take place the electric shock accident.

This practicality further sets up to the middle part of mounting pad and forms the third mounting hole, the screw passes the third mounting hole.

The utility model discloses the periphery that further sets up to the mounting pad forms a plurality of joint pieces, the joint piece is protruding towards the direction of third mounting hole and is formed the chimb, the bottom of cap forms a week shirt rim, the cap is connected on the mounting pad through the cooperation of shirt rim and chimb.

The cap adopts the structure that the skirt edge is matched with the convex edge to be connected on the mounting pad, so that the mounting pad is reliably connected with the cap, and the screw electricity-isolating assembly is conveniently mounted.

The utility model discloses further set up to the screw and include screw thread section and smooth section, smooth section's diameter is greater than the diameter of screw thread section, smooth section is close to one side of screw thread section and forms annular end portion, smooth section sets up in first mounting hole, the bottom of partition portion supports presses the annular end portion at smooth section.

The separating part of the mounting pad is pressed against the smooth section of the screw, so that the stability of connection of the mounting pad is improved while the screw is electrically isolated from the bottom plate.

This practicality further sets up to still be provided with the gasket between nut and the mounting pad, the gasket is worn to put on the screw.

This practicality further sets up to one section internal thread of inside formation of smooth section.

This practicality further sets up to the number of joint piece for 3.

The gasket is used for improving the stability of the connection between the nut and the screw and preventing slipping; the internal thread of the smooth section is used for connecting the junction box with an external metal plate; the periphery of the mounting pad is provided with 3 clamping blocks so that the connection between the cap and the mounting pad is more stable.

Drawings

Fig. 1 is a rear view of an embodiment of the present invention.

Fig. 2 is a cross-sectional view a-a of fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 2.

Fig. 4 is an exploded view of the screw, the nut and the screw electricity isolating assembly according to the embodiment of the present invention.

Fig. 5 is a perspective view of a mounting pad according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1-5, the utility model relates to a current collection box with screw separates electric structure, including box 1 and bottom plate 2, the inside bottom surface of box 1 forms a plurality of screw mount pads 3, bottom plate 2 sets up on screw mount pad 3, is provided with screw 4, nut 5, gasket 8 on the screw mount pad 3, screw 4 includes screw thread section 41 and smooth section 42, the diameter of smooth section 42 is greater than the diameter of screw thread section 41, smooth section 42 is close to one side of screw thread section 41 and forms annular tip 421, the inside of smooth section 42 forms one section internal thread 422, form first mounting hole 31 on the screw mount pad 3, smooth section 42 sets up in first mounting hole 31, and bottom plate 2 just forms second mounting hole 21 to the position of first mounting hole 31, screw 4 passes first mounting hole 31, second mounting hole 21 in proper order, Gasket 8 and the upper end of screw 4 extend to bottom plate 2 top, nut 5 is connected in the upper end of screw 4, be provided with a plurality of screw electricity isolation components on bottom plate 2, screw electricity isolation component includes insulating mounting pad 6 and cap 7, mounting pad 6 sets up between bottom plate 2 and nut 5, gasket 8 sets up between nut 5 and mounting pad 6, the middle part of mounting pad 6 forms third mounting hole 62, screw 4 passes third mounting hole 62 simultaneously, and the bottom of third mounting hole 62 extends downwards and forms the partition portion 61 that is used for keeping apart bottom plate 2 and screw 4, partition portion 61 sets up in second mounting hole 21, the bottom of partition portion 61 supports the annular end portion 421 at smooth section 42, the periphery of mounting pad 6 forms three joint piece 63, joint piece 63 is protruding towards the direction of third mounting hole 62 and forms chimb 64, a cavity 71 is formed in the cap 7, a peripheral skirt 72 is formed at the bottom of the cap 7, the cap 7 is connected to the mounting pad 6 through the matching of the skirt 72 and the flange 64, and the upper ends of the nut 5, the gasket 8 and the screw 4 are arranged in the cavity 71.

In addition to the above embodiments, there are also other embodiments of the present invention, and those skilled in the art can make various corresponding changes and modifications, such as the number of the above-mentioned clamping blocks, without departing from the spirit and the essential technical content of the present invention, but these corresponding changes and modifications should fall within the scope of the appended claims.

Claims (7)

1. The utility model provides a take screw to separate collection flow box of electric structure, includes box and bottom plate, the inside bottom surface of box forms a plurality of screw mount pads, the bottom plate sets up on the screw mount pad, is provided with screw and nut on the screw mount pad, forms first mounting hole on the screw mount pad, and the bottom plate just forms the second mounting hole to the position of first mounting hole, the upper end that the screw passed first mounting hole and second mounting hole and screw in proper order extends to the bottom plate top, the upper end at the screw, its characterized in that are connected to the nut: the bottom plate is provided with a plurality of screw electricity isolation assemblies, the screw electricity isolation assemblies comprise insulating mounting pads and caps, the mounting pads are arranged between the bottom plate and the screw caps, the bottoms of the mounting pads extend downwards to form separating portions used for isolating the bottom plate and the screws, the separating portions are arranged in the second mounting holes, cavities are formed in the caps, the caps are connected to the mounting pads, and the upper ends of the screw caps and the screws are arranged in the cavities.

2. The bus box with the screw electricity insulation structure according to claim 1, wherein: the middle part of the mounting pad forms a third mounting hole, and the screw passes through the third mounting hole.

3. The bus box with the screw electricity insulation structure according to claim 2, wherein: the periphery of mounting pad forms a plurality of joint pieces, the joint piece is protruding towards the direction of third mounting hole and is formed the chimb, the bottom of cap forms a week shirt rim, the cap is connected on the mounting pad through the cooperation of shirt rim and chimb.

4. The bus box with the screw electricity insulation structure according to claim 1, 2 or 3, wherein: the screw comprises a threaded section and a smooth section, the diameter of the smooth section is larger than that of the threaded section, an annular end portion is formed on one side, close to the threaded section, of the smooth section, the smooth section is arranged in the first mounting hole, and the bottom of the partition portion abuts against the annular end portion of the smooth section.

5. The bus box with the screw electricity insulation structure according to claim 1, 2 or 3, wherein: a gasket is arranged between the screw cap and the mounting pad and penetrates through the screw.

6. The bus box with the screw electricity insulation structure according to claim 4, wherein: the smooth section forms an internal thread inside.

7. The bus box with the screw electricity insulation structure according to claim 3, wherein: the number of the clamping blocks is 3.

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