CN213845545U

CN213845545U - Grounding device for assembly

Info

Publication number: CN213845545U
Application number: CN202120236193.6U
Authority: CN
Inventors: 张海宝; 诸荣耀; 邵蒋宁; 陶国均; 徐波; 倪晟炜; 张习文
Original assignee: Zhejiang Astronergy New Energy Development Co Ltd
Current assignee: Zhejiang Astronergy New Energy Development Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-07-30
Anticipated expiration: 2031-01-27

Abstract

The utility model discloses a subassembly earthing device, including fixed connection's installation head and connecting portion, the connecting portion periphery is equipped with annular packing ring, and the side that the packing ring is close to installation head is equipped with the connection tooth, and the packing ring is made for electrically conductive material, just links to each other with the earth connection. When the component grounding device is used, the mounting head is inserted into the mounting hole of the component frame. The gasket is located the periphery of connecting portion, and the gasket contacts with the subassembly frame in the connection process, and the last connecting teeth of gasket can puncture the oxide film of subassembly frame. Because the gasket is made of conductive materials, after the oxide film is punctured, the gasket is contacted with metal materials in the frame of the assembly, meanwhile, the gasket is connected with the grounding wire, and charges of static electricity or lightning stroke generated by the frame of the assembly can be led into the ground along the grounding wire, so that the effectiveness of grounding the frame of the assembly is ensured.

Description

Grounding device for assembly

Technical Field

The utility model relates to a photovoltaic power generation technical field, in particular to subassembly earthing device.

Background

According to the relevant specifications and standard regulations of photovoltaic power station construction, the frame of the assembly needs to be grounded by the photovoltaic assembly with the frame, so that the electrostatic effect and the electric leakage phenomenon of the assembly are reduced, and the assembly is prevented from being damaged by lightning and static electricity. And simultaneously, the good contact between the assembly frame and the grounding wire is ensured.

In the prior art, a photovoltaic module usually adopts a self-tapping screw or a common bolt to fix a grounding wire on a frame of the module. The component frame is usually made of aluminum alloy, a layer of compact oxide film is arranged on the surface of the component frame, and the oxide film cannot be punctured by common bolts, so that the frame cannot be effectively grounded.

Therefore, how to ensure the effective grounding of the component frame is a technical problem that needs to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a subassembly earthing device, it has set up the packing ring in the connecting portion periphery, and one side of packing ring is equipped with the connection tooth, connects the oxidation film that the tooth can puncture the subassembly frame to the assurance connects the subassembly frame can be connected with effective, and then guarantees the ground connection effect of frame.

In order to achieve the above object, the utility model provides a component grounding device, installation head and connecting portion including fixed connection, the connecting portion periphery is equipped with annular packing ring, the side that the packing ring is close to the installation head is equipped with the connection tooth, the packing ring is made for electrically conductive material, and links to each other with the earth connection.

Preferably, the connecting device further comprises a connecting ring and a fastening piece, wherein the connecting ring and the fastening piece are sleeved on the periphery of the connecting portion, the fastening piece is located on one side, away from the mounting head, of the connecting ring, the connecting ring is located between the fastening piece and the gasket, and the connecting ring is connected with the grounding wire.

Preferably, the connecting part is rod-shaped, the periphery of the connecting part is provided with external threads, and the fastening piece is a wing-shaped nut.

Preferably, the mounting head and the connecting part are integrally formed structural members.

Preferably, the mounting head is columnar, one end of the mounting head, which is far away from the connecting part, is a guide cone, and the diameter of the guide cone gradually increases along the direction close to the connecting part.

Preferably, the side wall of the mounting head is provided with a groove, and a clamping component is arranged in the groove.

Preferably, the clamping assembly comprises a buckle, and a clamping protrusion is arranged on the outer side of the buckle.

Preferably, the clamping protrusion is wedge-shaped, and the thickness of the clamping protrusion is gradually increased along the direction close to the connecting part.

Preferably, the buckle with be equipped with the joint spring between the bottom of recess, the buckle orientation the side of recess bottom is equipped with the guide post, the joint spring housing is located the periphery of guide post.

Preferably, the number of the grooves on the side wall of the mounting head is more than two, and all the grooves are uniformly distributed along the circumferential direction of the mounting head.

The utility model provides a subassembly earthing device, including fixed connection's installation head and connecting portion, the connecting portion periphery is equipped with annular packing ring, and the side that the packing ring is close to the installation head is equipped with the connection tooth, and the packing ring is made for electrically conductive material, just links to each other with the earth connection.

When the component grounding device is used, the mounting head is inserted into the mounting hole of the component frame. The gasket is located the periphery of connecting portion, and the gasket contacts with the subassembly frame in the connection process, and the last connecting teeth of gasket can puncture the oxide film of subassembly frame. Because the gasket is made of conductive materials, after the oxide film is punctured, the gasket is contacted with metal materials in the frame of the assembly, meanwhile, the gasket is connected with the grounding wire, and charges of static electricity or lightning stroke generated by the frame of the assembly can be led into the ground along the grounding wire, so that the effectiveness of grounding the frame of the assembly is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the assembly grounding device provided by the present invention.

Wherein the reference numerals in fig. 1 are:

the mounting head 1, the connecting part 2, the gasket 3, the connecting ring 4, the grounding wire 5, the wing nut 6, the buckle 7, the clamping spring 8, the component frame 9, the connecting teeth 31 and the guide post 71.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an assembly grounding device provided in the present invention.

The utility model provides a subassembly earthing device, the structure is shown in figure 1, including installation head 1 and connecting portion 2. Wherein, the mounting head 1 and the connecting part 2 are both rod-shaped and are coaxially arranged. In one embodiment of the present application, the mounting head 1 and the connecting portion 2 are integrally formed structural members. The component frame 9 is typically provided with mounting holes into which the mounting heads 1 can be inserted and fixed with the component frame 9. The connection portion 2 is for connection to a ground line 5. Specifically, the periphery of the connecting part 2 is provided with an annular gasket 3, and the side surface of the gasket 3 close to the mounting head 1 is provided with a connecting tooth 31. After the gasket 3 is fastened, the connecting teeth 31 can pierce the oxide layer of the component frame 9, so that the connecting teeth 31 are in contact with the component frame 9. The gasket 3 is made of a conductive material, after the connecting teeth 31 pierce the oxide layer, the gasket 3 is conducted with the frame, meanwhile, the gasket 3 is connected with the grounding wire 5, and electric charges on the assembly frame 9 are conducted to the ground through the gasket 3 and the grounding wire 5. In addition, the washer 3 may be fixed to the connecting portion 2 by a nut, a snap, or the like. Of course, the washer 3 may be connected to the connecting portion 2 by means of a screw thread.

Optionally, the assembly grounding device further comprises a connecting ring 4 and a fastener. As shown in fig. 1, the coupling ring 4 is located on the side of the washer 3 remote from the mounting head 1, and the fastener is located on the side of the coupling ring 4 remote from the mounting head 1. The connecting ring 4 is positioned between the fastener and the washer 3, and the connecting ring 4 is fixedly connected with the grounding wire 5 by welding and the like. In a specific embodiment of this application, connecting portion 2 periphery is equipped with the external screw thread, and the fastener is wing nut 6. When the mounting is carried out, the connecting part 2 is positioned outside the component frame 9, and the mounting head 1 is fixed inside the component frame 9. Wing nut 6 links to each other with connecting portion 2 through the screw, and wing nut 6 compresses tightly connecting ring 4 and packing ring 3 with subassembly frame 9 from both sides to exert the packing force to packing ring 3, make connecting tooth 31 puncture the oxide layer of subassembly frame 9. The coupling teeth 31 and the washer 3 guide the charge to the coupling ring 4, which coupling ring 4 in turn guides the charge to ground via the ground line 5.

Optionally, in order to facilitate the installation of the installation head 1 into the installation hole, one end of the installation head 1 away from the connection part 2 is a guide cone. As shown in fig. 1, the diameter of the guide cone gradually increases along the direction close to the connection portion 2, the outer side of the guide cone forms a guide surface, and the frontmost end of the guide cone is spherical, so that the resistance of the guide cone in the installation process can be reduced, and the mounting head 1 is prevented from being locked with the outer side wall of the mounting hole.

Optionally, in order to fix the mounting head 1 in the mounting hole, a groove is formed in a side wall of the mounting head 1, and a clamping component is arranged in the groove. After the mounting head 1 is inserted into the mounting hole, the clamping component can be clamped and fixed with the periphery of the mounting hole, the connection reliability is improved, and the grounding failure caused by the falling of the connector is avoided.

Optionally, the clamping component includes a buckle 7, a clamping protrusion is disposed on an outer side of the buckle 7, and the clamping protrusion extends in a direction away from the mounting head 1. When the device is installed, the buckle 7 firstly contracts into the groove. After the clamping protrusion passes through the mounting hole, the buckle 7 resets and is fixed with the peripheral clamping of the mounting hole.

Optionally, as shown in fig. 1, the clamping protrusion is wedge-shaped, and the thickness of the clamping protrusion gradually increases along a direction close to the connecting portion 2. The side face of the clamping protrusion close to the connecting part 2 is a clamping face which is perpendicular to the axial direction of the clamping connector. Therefore, after the mounting head 1 is mounted in the mounting hole, the clamping surface is attached to the inner side wall of the component frame 9, and the fixing effect is achieved.

Optionally, in order to facilitate the retraction and the reset of the buckle 7 in the groove, a clamping spring 8 is arranged between the buckle 7 and the bottom of the groove, one end of the clamping spring 8 abuts against the bottom of the groove, and the other end of the clamping spring abuts against the buckle 7. The clamping spring 8 pushes the buckle 7 in the direction away from the bottom of the groove, so that the buckle 7 can be kept at the clamping fixed position. Can make joint spring 8 produce elastic deformation through pressing buckle 7 in the installation, and then make buckle 7 shrink go into the recess in, make things convenient for buckle 7 to pass the mounting hole. In addition, the side of the buckle 7 facing the bottom of the groove is provided with a guide column 71, and the clamping spring 8 is sleeved on the periphery of the guide column 71. Guide post 71 can avoid the thrust direction of joint spring 8 perpendicular bottom surface of recess all the time, avoids buckle 7 and recess card to die, influences buckle 7 and kick-backs. Of course, the user may refer to the structure of other clamping components in the prior art as required, and is not limited herein.

Optionally, in order to ensure the stability of the clamping, the number of the grooves on the side wall of the mounting head 1 is more than two, and all the grooves are uniformly distributed along the circumferential direction of the mounting head 1. Each groove is internally provided with a clamping assembly, so that the clamping assemblies are uniformly distributed along the axial direction of the mounting hole.

In this embodiment, the assembly grounding device is provided with the gasket 3 at the periphery of the connecting portion 2, the side surface of the gasket 3 close to the mounting head 1 is provided with the connecting teeth 31, and the connecting portion 2 compresses the gasket 3 and the assembly frame 9 through the wing nut 6, so that the connecting teeth 31 pierce the oxide layer of the assembly frame 9, and the electric charge of the assembly frame 9 can be effectively conducted to the ground. In addition, the installation head 1 is provided with more than two clamping components, the clamping components are clamped and matched with the installation holes from the inner side of the component frame 9, when the grounding wire 5 is under the action of tensile force, the clamping components can provide effective reaction force, and the installation head 1 is prevented from being separated from the installation holes. Thereby improving the reliability of the connection.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

It is right above that the utility model provides an assembly earthing device has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides an subassembly earthing device, its characterized in that, including fixed connection's installation head (1) and connecting portion (2), connecting portion (2) periphery is equipped with annular packing ring (3), the side that packing ring (3) are close to installation head (1) is equipped with connects tooth (31), packing ring (3) are made for electrically conductive material, and link to each other with earth connection (5).

2. The component grounding device according to claim 1, further comprising a connecting ring (4) and a fastening member, wherein the connecting ring (4) is sleeved on the periphery of the connecting portion (2), the fastening member is located on one side of the connecting ring (4) away from the mounting head (1), the connecting ring (4) is located between the fastening member and the gasket (3), and the connecting ring (4) is fixedly connected with the grounding wire (5).

3. The assembly grounding device according to claim 2, characterized in that the connecting portion (2) is rod-shaped, the connecting portion (2) is externally threaded on its periphery, and the fastening member is a wing nut (6).

4. A component grounding device according to claim 3, characterized in that the mounting head (1) and the connecting portion (2) are an integrally formed structural part.

5. The component grounding device according to claim 4, characterized in that the mounting head (1) is cylindrical, and the end of the mounting head (1) remote from the connection portion (2) is a guide cone, the diameter of which gradually increases in the direction approaching the connection portion (2).

6. A component grounding device according to any one of claims 1 to 5, characterized in that the side wall of the mounting head (1) is provided with a recess in which a snap-in component is arranged.

7. The assembly grounding device of claim 6, characterized in that the clamping assembly comprises a buckle (7), and the outer side of the buckle (7) is provided with a clamping protrusion.

8. The assembly grounding device of claim 7, characterized in that the clamping projection is wedge-shaped, the clamping projection increasing in thickness in a direction towards the connection portion (2).

9. The assembly grounding device according to claim 7, characterized in that a clamping spring (8) is arranged between the buckle (7) and the bottom of the groove, a guide post (71) is arranged on the side surface of the buckle (7) facing the bottom of the groove, and the clamping spring (8) is sleeved on the periphery of the guide post (71).

10. The component grounding device according to claim 6, characterized in that the number of the recesses is two or more, all of the recesses being uniformly distributed along the circumferential direction of the mounting head (1).