CN217950913U

CN217950913U - Series inverter chassis

Info

Publication number: CN217950913U
Application number: CN202221678071.3U
Authority: CN
Inventors: 刘长举; 吴贻杰; 刘行
Original assignee: Ningbo Wanjin Precision Technology Co ltd
Current assignee: Ningbo Wanjin Precision Technology Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-12-02
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses a group's string-type dc-to-ac converter machine case, including box and door plant, the box is formed with the installation cavity, the door plant sets up on the box for seal the opening of installation cavity, be formed with first connecting hole on the box, be formed with the second connecting hole on the door plant, lock through coupling assembling between box and the door plant, coupling assembling includes fastener, nut and connecting piece, the bottom of fastener is passed first connecting hole and is formed with riveting portion through the riveting, the middle section of fastener is located the opposite side of first connecting hole to be formed with the external screw thread in the periphery, the nut is installed on the fastener with the external screw thread fit, the second connecting hole is passed at the top of fastener, the connecting piece install in the top of fastener. The utility model discloses a machine case structure connects box and door plant through coupling assembling, has avoided welded structure, and it is more convenient to process to stable in structure is reliable.

Description

Series inverter chassis

Technical Field

The utility model relates to a sheet metal component technical field, in particular to group's string-type dc-to-ac converter machine case.

Background

Along with the development of solar energy science and technology, solar energy is applied to more and more places and places, the solar energy is converted into electric energy which needs to pass through a photovoltaic inverter, the effect of a string type inverter in the photovoltaic inverter is good, the string type photovoltaic inverter is stronger in function, higher in intelligent degree and continuous in single-machine power, and the upper limit of the breakthrough is also kept. The string inverter is usually disposed in a cabinet, which is made of steel sheet metal parts and is used to protect components from working normally.

The conventional cabinet structure, in which a bracket is welded to the cabinet and a floating nut is mounted on the bracket, and the door panel is connected by the floating nut on the bracket to be mounted on the cabinet, has the following problems: at first welding process is complicated, and the error is great during the welding moreover, influences final assembly accuracy, and this kind of connected mode can lead to sealing performance poor between box and the door plant in addition, and easy infiltration in the box.

Disclosure of Invention

Aiming at the defects of the prior art, the combined series type inverter case is provided, and has the advantages of simple assembly, low processing cost, high positioning precision and stable and reliable structure.

In order to achieve the above purpose, the utility model provides the following technical scheme.

Group's string formula dc-to-ac converter machine case, including box and door plant, the box is formed with the installation cavity that is used for holding group's string formula dc-to-ac converter, the door plant sets up on the box for seal the opening of installation cavity, be formed with first connecting hole on the box, be formed with the second connecting hole on the door plant, lock through coupling assembling between box and the door plant, coupling assembling includes fastener, nut and connecting piece, the bottom of fastener is passed first connecting hole and is formed with riveting portion through the riveting, the middle section of fastener is located the opposite side of first connecting hole to be formed with the external screw thread in the periphery, the nut is installed on the fastener with the external screw thread cooperation, the second connecting hole is passed at the top of fastener, the connecting piece install in the top of fastener.

The beneficial effects of the utility model are that: the utility model discloses a machine case structure, through setting up the fastener, nut and connecting piece, during the assembly, set up first connecting hole on the box earlier, set up the second connecting hole on the door plant, pass first connecting hole and be formed with riveting portion through the riveting in the bottom of fastener again, and install the nut in the middle section of fastener, backstop cooperation through riveting portion and nut and first mounting hole, thereby can guarantee that the fastener can fixed mounting on the box, install the door plant to the box again, and make the top of fastener pass the second connecting hole, the connecting piece is installed in the top of fastener, through connecting piece and door plant backstop cooperation, thereby can fix the door plant, welded structure has been avoided, processing is more convenient, and through setting up first connecting hole and second connecting hole in advance, positioning error can be reduced, and stable in structure is reliable.

As an improvement of the present invention, a screw hole is formed at the top of the fastening member, and the connecting member is a screw fitted to the screw hole. Through the improvement, the connection is more convenient.

As an improvement of the utility model, the second connecting hole is a shoulder hole, the upper end of shoulder hole is used for holding the head of screw. Through the improvement, the screw can be prevented from being exposed, so that the whole body is more attractive.

As an improvement of the utility model, the screw hole is a blind hole.

As an improvement of the utility model, the periphery of the bottom of the fastener is formed with a tooth-shaped reinforcing part. With the above improvement, the strength of the fastener bottom can be increased.

As an improvement of the utility model, sealed glue is scribbled between riveting portion, nut and the first connecting hole. Through the improvement, the sealing performance of the joint can be ensured, and water seepage is avoided.

As an improvement of the utility model, be equipped with the separation portion that is located the installation cavity periphery on the box, separation portion is protruding setting. Through the improvement, the blocking part can play a role in blocking, and water is prevented from entering the box body.

As an improvement of the utility model, the opening of installation cavity is formed at the front side of box, the rear side of box is equipped with the mounting bracket, the bottom of box is equipped with the support frame.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a schematic cross-sectional view of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3 according to the present invention.

Fig. 5 is a schematic diagram of the connection assembly structure of the present invention.

In the figure, 1, a box body; 1.1, installing a cavity; 1.2, a blocking part; 1.3, a first connection hole; 2. a door panel; 2.1, a second connecting hole; 3. a connecting assembly; 3.1, fastening pieces; 3.11, riveting parts; 3.12, external threads; 3.13, screw holes; 3.14, a reinforcement part; 3.2, a nut.

Detailed Description

The invention is further explained by combining the attached drawings.

Referring to fig. 1 to 5, the group string type inverter chassis includes a box body 1 and a door panel 2, the box body 1 is formed with an installation cavity 1.1 for accommodating the group string type inverter, an opening is formed on the installation cavity 1.1, the inverter is conveniently assembled in the installation cavity 1.1 through the opening, and the door panel 2 is arranged on the box body 1 and is used for sealing the opening of the installation cavity 1.1.

The improved box is characterized in that a first connecting hole 1.3 is formed in the box body 1, a second connecting hole 2.1 is formed in the door plate 2, the box body 1 and the door plate 2 are locked through a connecting assembly 3, the connecting assembly 3 comprises a fastening piece 3.1, a nut 3.2 and a connecting piece, a riveting portion 3.11 is formed by riveting and penetrating through the first connecting hole 1.3 at the bottom of the fastening piece 3.1, the middle section of the fastening piece 3.1 is located on the other side of the first connecting hole 1.3 and is provided with an external thread 3.12 at the periphery, the nut 3.2 and the external thread 3.12 are installed on the fastening piece 3.1 in a matched mode, namely one side of the first connecting hole 1.3 is the riveting portion 3.11, the other side of the first connecting hole 1.3 is the nut 3.2, and the external diameters of the nut 3.2 and the riveting portion 3.11 are both larger than the aperture of the first connecting hole 1.3, and the nut 3.2 and the riveting portion 3.11 are matched with the first connecting hole 1.3 in a stop mode.

The top of the fastener 3.1 passes through the second connecting hole 2.1, and the connecting piece is installed at the top of the fastener 3.1. The outer diameter of the connecting piece is larger than that of the second connecting hole 2.1, so that a stop fit is formed between the connecting piece and the second connecting hole 2.1, specifically, a screw hole 3.13 is formed at the top of the fastening piece 3.1, and the connecting piece is a screw matched with the screw hole 3.13. The screw is connected with screw hole 3.13, simple to operate. And the second connection hole 2.1 is a stepped hole, the upper end of which is intended to receive the head of a screw. Can avoid the screw protrusion to expose for whole more pleasing to the eye.

In addition, the screw hole 3.13 is a blind hole, so that the bottom of the fastener 3.1 is of a solid structure, and a riveting part 3.11 formed after riveting and pressing the bottom of the fastener 3.1 has enough strength. The fastener 3.1 is integrally formed, and is convenient to process and manufacture. The periphery of the bottom of the fastener 3.1 is provided with a tooth-shaped reinforcing part 3.14. The strength of the base of the fastener 3.1 can be increased.

And sealant is coated among the riveting part 3.11, the nut 3.2 and the first connecting hole 1.3. Can guarantee the leakproofness of junction, avoid 1 infiltration of box, can make the structure more stable simultaneously, avoid door plant 2 to hit nut 3.2 loose when the installation. Be equipped with the separation portion that is located installation cavity 1.1 periphery on box 1, separation portion is protruding setting. The separation part can play a role in blocking and avoid water from entering the box body 1.

The opening of installation cavity 1.1 is formed at the front side of box 1, the rear side of box 1 is equipped with the mounting bracket, the bottom of box 1 is equipped with the support frame. Through setting up mounting bracket and support frame, be convenient for install quick-witted case.

The utility model discloses a machine case structure, through setting up fastener 3.1, nut 3.2 and connecting piece, during the assembly, set up first connecting hole 1.3 on the box 1 earlier, set up second connecting hole 2.1 on door plant 2, pass first connecting hole 1.3 and be formed with riveting portion 3.11 through the riveting in fastener 3.1's bottom again, and middle section mounting nut 3.2 at fastener 3.1, through the backstop cooperation of riveting portion 3.11 and nut 3.2 with first mounting hole, thereby can guarantee that fastener 3.1 can fixed mounting on box 1, install door plant 2 to box 1 again, and make fastener 3.1's top pass second connecting hole 2.1, the connecting piece is installed in fastener 3.1's top, through connecting piece and the cooperation of door plant 2 backstop, thereby can fix door plant 2, the welded structure has been avoided, processing is more convenient, and through set up first connecting hole 1.3 and second connecting hole 2.1 in advance, can reduce positioning error, and stable in structure is reliable.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. Group's string formula inverter machine case, including box and door plant, the box is formed with the installation cavity that is used for holding group's string formula inverter, the door plant sets up on the box for seal its characterized in that with the opening of installation cavity: be formed with first connecting hole on the box, be formed with the second connecting hole on the door plant, lock through coupling assembling between box and the door plant, coupling assembling includes fastener, nut and connecting piece, the bottom of fastener is passed first connecting hole and is formed with riveting portion through the riveting, the middle section of fastener is located the opposite side of first connecting hole to be formed with the external screw thread in the periphery, the nut is installed on the fastener with the external screw thread cooperation, the second connecting hole is passed at the top of fastener, the connecting piece install in the top of fastener.

2. The string inverter chassis of claim 1, wherein: the top of the fastener is provided with a screw hole, and the connecting piece is a screw matched with the screw hole.

3. The string inverter chassis of claim 2, wherein: the second connecting hole is a stepped hole, and the upper end of the stepped hole is used for accommodating the head of a screw.

4. The string inverter chassis of claim 2, wherein: the screw holes are blind holes.

5. The string inverter chassis of claim 1, wherein: the periphery of the bottom of the fastener is provided with a tooth-shaped reinforcing part.

6. The string inverter chassis of claim 1, wherein: and sealant is coated among the riveting part, the nut and the first connecting hole.

7. The string inverter chassis of claim 1, wherein: the box body is provided with a blocking portion located on the periphery of the installation cavity, and the blocking portion is arranged in a protruding mode.