CN210866552U - Grounding device - Google Patents

Abstract

The utility model discloses an earthing device for with the dull and stereotyped connection of ground connection that has magnetic adsorption power, earthing device including be used for with the signal cable shielding layer be connected the grounding piece with through with the dull and stereotyped magnetic adsorption of ground connection in order to compress tightly the magnetic component on the grounding is dull and stereotyped with the grounding piece. The utility model discloses an earthing device compresses tightly the grounding lug on the ground connection is dull and stereotyped through magnetic component, therefore the grounding lug does not all need the use of tools at the dismouting in-process, easy operation compresses tightly the grounding lug on the ground connection is dull and stereotyped through magnetic component moreover, can make the grounding lug have great area of contact with the ground connection is dull and stereotyped to ground connection impedance has been reduced, the quality of ground connection is guaranteed.

Description

Grounding device

Technical Field

The utility model relates to an electromagnetic compatibility technical field especially relates to a grounding device.

Background

Electromagnetic compatibility (EMC) refers to a device or system that operates satisfactorily in its electromagnetic environment and does not generate intolerable electromagnetic interference to any device in its environment. Electromagnetic compatibility includes two requirements: on one hand, the electromagnetic interference generated to the environment by the equipment in the normal operation process cannot exceed a certain limit value; another aspect is that the appliance has a degree of immunity to electromagnetic interference present in the environment in which it is located.

The electromagnetic compatibility is an important index for evaluating the quality of electronic products, and the quality of the test quality directly influences the evaluation of the quality of the electronic products. The grounding quality in the electromagnetic compatibility test directly affects the electromagnetic compatibility test structure, thereby having great influence on product evaluation. At present, the grounding is generally realized by adopting the spring piece inserted pin grounding or the screw fixing grounding, but in the process of disassembling and assembling the grounding piece, tools are required, the operation is troublesome, and after the operation is carried out for multiple times, the resistance is easy to wear, so that the grounding effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a grounding device to solve the problem that the operation of a dismounting grounding piece is troublesome in the existing grounding test and can influence the grounding effect after operating for a plurality of times.

The purpose of the utility model is realized by adopting the following technical scheme:

a grounding device is used for being connected with a grounding flat plate with magnetic adsorption force, and comprises a grounding sheet used for being connected with a signal cable shielding layer and a magnetic component which is magnetically adsorbed with the grounding flat plate to press the grounding sheet on the grounding flat plate.

Furthermore, the grounding piece comprises a connecting part between the grounding flat plate and the magnetic component and a bending part formed at one end of the connecting part in a bending mode, the grounding device further comprises a cable joint fixed at the bending part, and the signal cable shielding layer is connected with the grounding piece through the cable joint.

Further, magnetic component includes shell and magnet, the shell is located including the cover first casing outside the magnet and connect in the handle at first casing top, first casing has the cavity that faces away from the handle, magnet fixed mounting in the cavity.

Furthermore, the magnetic component further comprises a second shell with an accommodating cavity, the second shell comprises a bottom plate and a side plate arranged on the edge of the bottom plate in an enclosing mode, the bottom plate and the side plate are enclosed to form the accommodating cavity, one end, far away from the handle, of the first shell extends into the accommodating cavity and is fixedly connected with the second shell, and the magnet is located between the first shell and the second shell.

Furthermore, the second shell further comprises a plurality of extending portions extending from the side, far away from the bottom plate, of the side plate towards the direction far away from the bottom plate, and the extending portions are evenly distributed at intervals along the circumferential direction of the side plate.

Furthermore, the bottom plate is a plate body made of an insulating material.

Furthermore, the number of the cable connectors is two, and the two cable connectors are symmetrically arranged on two side portions of the bending portion.

Furthermore, the bending part is also provided with a mounting hole for mounting a spare cable connector, and the mounting hole is positioned between the two cable connectors.

Further, the cable joint is an N-type cable joint.

Further, the connecting portion is vertically connected to the bending portion.

Compared with the prior art, the beneficial effects of the utility model reside in that: through setting up earthing device and including grounding piece and magnetic assembly, magnetic assembly compresses tightly the grounding piece on the ground connection is dull and stereotyped through adsorbing with the dull and stereotyped magnetism of ground connection, therefore the grounding piece does not all need the use of tools at the dismouting in-process, easy operation compresses tightly the grounding piece on the ground connection is dull and stereotyped through magnetic assembly in addition, can make grounding piece and ground connection dull and stereotyped have great area of contact to ground connection impedance has been reduced, the quality of ground connection is guaranteed.

Drawings

Fig. 1 is a partially exploded schematic view of a grounding device according to an embodiment of the present invention.

In the figure: 100. a grounding device; 10. a ground plate; 20. a magnetic component; 11. a connecting portion; 12. a bending section; 30. a cable joint; 21. a housing; 211. a first housing; 212. a handle; 22. a second housing; 221. a base plate; 222. a side plate; 223. an extension portion; 121. and (7) installing holes.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

As shown in fig. 1, an embodiment of the present invention provides an earthing device 100 for connecting with an earthing panel having magnetic attraction force, the earthing device 100 includes an earthing strip 10 for connecting with a signal cable shielding layer and a magnetic component 20 for compressing the earthing strip 10 on the earthing panel through magnetic attraction with the earthing panel.

This design, including grounding plate 10 and magnetic component 20 through setting up earthing device 100, magnetic component 20 can compress tightly grounding plate 10 on the ground plate through self magnetism, other connecting pieces need not be used, therefore grounding plate 10 is in the installation, only need with magnetic component 20 place on grounding plate 10 can, in the dismantlement in-process, with magnetic component 20 remove from grounding plate 10 can, the dismouting in-process need not use the instrument, moreover, and because need not use the connecting piece, even if use back many times, can not produce the problem of great impedance because the connecting piece is worn and torn yet, grounding plate 10 can keep great area of contact with the ground plate all the time, can prevent the point type contact, help reducing ground connection impedance, guarantee ground connection quality. Meanwhile, the grounding device 100 can be conveniently transferred to other positions by pressing the magnetic assembly 20 against the grounding plate 10.

In the present embodiment, the grounding device 100 is applied to an electromagnetic compatibility test system, but is not limited to the electromagnetic compatibility test system, the electromagnetic compatibility test system comprises a test platform, an antenna and the signal cable and grounding device 100, wherein the grounding plate is a conductor made of a conductive material, it can be installed on the testing platform after being formed separately, or can be a part of the testing platform, the signal cable is connected with the antenna and the grounding plate 10, after the antenna receives the signal sent by the product, the signal cable is transmitted to the grounding piece 10 to be released, the magnetic assembly 20 is used for compressing the grounding piece 10, the connection stability is guaranteed, the grounding piece 10 and a grounding flat plate can have large contact area, grounding impedance is reduced, grounding quality is guaranteed, accuracy of electromagnetic compatibility test results is improved, and therefore the electromagnetic compatibility test device helps workers to carry out correct quality assessment on products.

Preferably, the grounding strip 10 includes a connecting portion 11 between the grounding plate and the magnetic component 20, and a bending portion 12 formed at one end of the connecting portion 11 by bending, and the grounding device 100 further includes a cable connector 30 fixed to the bending portion 12, and the signal cable shielding layer is connected to the grounding strip 10 through the cable connector 30. This design, including connecting portion 11 and kink 12 through setting up ground lug 10, magnetic component 20 compresses tightly connecting portion 11 on the ground connection is dull and stereotyped, still through set up cable joint 30 on kink 12, and signal cable shielding layer is connected with cable joint 30, like this, can make things convenient for being connected of signal cable and ground lug 10. Specifically, in the present embodiment, the signal cable is a coaxial shielding cable, the cable connector 30 is an N-type cable connector 30, and the shielding layer of the coaxial shielding cable is electrically connected to the N-type cable connector 30, so that the N-type cable connector 30 has the advantages of high reliability and strong shock resistance, and meanwhile, the shielding layer can absorb the interference signal from the outside to prevent the interference signal from interfering with the signal inside the signal cable.

Preferably, in the present embodiment, the connecting portion 11 and the bent portion 12 are connected perpendicularly, i.e., the included angle therebetween is 90 °. This arrangement not only makes the grounding plate 10 more attractive, but also maximizes the contact area between the connecting portion 11 and the magnetic assembly 20. It will be understood that the angle between the connecting portion 11 and the bent portion 12 may also be greater or smaller than 90 °.

Preferably, the magnetic assembly 20 comprises a housing 21 and a magnet, the housing 21 comprises a first body 211 covering the magnet and a handle 212 connected to the top of the first body 211, the first body 211 has a cavity facing away from the handle 212, and the magnet is fixedly mounted in the cavity. This design, including shell 21 and magnet through setting up magnetic component 20, shell 21 includes first casing 211 and handle 212, and the top at first casing 211 is installed to handle 212, and like this, at the dismouting in-process of grounding piece 10, the staff can hold handle 212 and operate, makes things convenient for the staff to operate.

Preferably, the magnetic assembly 20 further includes a second housing 22 having a receiving cavity, the second housing 22 includes a bottom plate 221 and a side plate 222 surrounding the edge of the bottom plate 221, the bottom plate 221 and the side plate 222 surround to form the receiving cavity, one end of the first housing 211 far from the handle 212 extends into the receiving cavity and is fixedly connected to the second housing 22, and the magnet is located between the first housing 211 and the second housing 22. According to the design mode, the second shell 22 is arranged, the second shell 22 comprises the bottom plate 221 and the side plate 222 arranged around the edge of the bottom plate 221, the bottom plate 221 and the side plate 222 are enclosed to form an accommodating cavity, and one end of the first shell 211 extends into the accommodating cavity and is fixedly connected with the second shell 22, so that the magnet can be prevented from falling off from the first shell 211, and the reliability of the magnetic assembly 20 is improved.

Preferably, the second casing 22 further includes a plurality of extending portions 223 extending from the side of the side plate 222 away from the bottom plate 221 in a direction away from the bottom plate 221, and the extending portions 223 are uniformly spaced along the circumferential direction of the side plate 222.

Preferably, the bottom plate 221 is a plate made of an insulating material. The current on the ground plate 10 is prevented from being transferred to the magnet.

Preferably, two cable connectors 30 are provided, and the two cable connectors 30 are symmetrically provided at two side portions of the bent portion 12. It is to be understood that the number of cable joints 30 is not limited to two, for example, one or more are also possible.

Preferably, the bending portion 12 is further provided with a mounting hole 121 for mounting the spare cable connector, and the mounting hole 121 is located between the two cable connectors 30. Specifically, in the present embodiment, the mounting hole 121 is a kidney-shaped hole.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. A grounding device is used for being connected with a grounding plate with magnetic attraction force, and is characterized by comprising a grounding sheet used for being connected with a signal cable shielding layer and a magnetic component used for pressing the grounding sheet on the grounding plate through magnetic attraction with the grounding plate.

2. The grounding device of claim 1, wherein the grounding plate includes a connecting portion between the grounding plate and the magnetic component and a bent portion formed at one end of the connecting portion, the grounding device further includes a cable connector fixed to the bent portion, and the signal cable shielding layer is connected to the grounding plate through the cable connector.

3. The grounding device of claim 1, wherein the magnetic assembly comprises a housing and a magnet, the housing comprises a first housing covering the magnet and a handle connected to a top of the first housing, the first housing has a cavity facing away from the handle, and the magnet is fixedly mounted in the cavity.

4. The grounding device of claim 3, wherein the magnetic assembly further comprises a second housing having a receiving cavity, the second housing includes a bottom plate and a side plate surrounding an edge of the bottom plate, the bottom plate and the side plate surround to form the receiving cavity, an end of the first housing, which is away from the handle, extends into the receiving cavity and is fixedly connected to the second housing, and the magnet is located between the first housing and the second housing.

5. The grounding device as in claim 4, wherein the second housing further includes a plurality of extension portions extending from a side of the side plate away from the bottom plate toward a direction away from the bottom plate, and the extension portions are uniformly spaced along a circumferential direction of the side plate.

6. The grounding device as in claim 4, wherein said bottom plate is a plate made of an insulating material.

7. The grounding device as claimed in claim 2, wherein there are two cable connectors, and the two cable connectors are symmetrically disposed on two sides of the bending portion.

8. The grounding device as claimed in claim 7, wherein the bent portion further has a mounting hole for mounting a spare cable connector, and the mounting hole is located between two cable connectors.

9. The grounding device of claim 2, wherein said cable connector is an N-type cable connector.

10. The grounding device of claim 2, wherein the connecting portion is perpendicularly connected to the bent portion.

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