CN220773104U

CN220773104U - Electronic equipment

Info

Publication number: CN220773104U
Application number: CN202321862895.0U
Authority: CN
Inventors: 南国梁; 韦仕元; 曾兵
Original assignee: Sungrow Shanghai Co Ltd
Current assignee: Sungrow Shanghai Co Ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2024-04-12
Anticipated expiration: 2033-07-14

Abstract

The utility model discloses electronic equipment, which comprises a cover body, a circuit board, a grounding device and a first fastening device, wherein the cover body is fixedly connected with the grounding device, the circuit board is arranged between the cover body and the grounding device, the first fastening device comprises a first fixing piece and a second fixing piece, the first fixing piece is arranged on one side of the circuit board, which is away from a grounding mounting seat, and is in conductive connection with the circuit board, the second fixing piece sequentially penetrates through the grounding device and the circuit board and is fixedly connected with the first fixing piece, and the second fixing piece is respectively in conductive connection with the grounding device and the first fixing piece. The technical scheme of the utility model can simplify the whole pressure-resistant test procedure and improve the production efficiency of the electronic equipment.

Description

Electronic equipment

Technical Field

The utility model relates to the technical field of withstand voltage test, in particular to electronic equipment.

Background

Existing electronic devices, such as inverters, require withstand voltage testing prior to use, i.e., applying a voltage higher than normal to the insulator of the device under test for a prescribed period of time. If the device under test insulator remains in the prescribed range for a prescribed period of time, it is determined that the device under test can safely operate under normal operating conditions. Therefore, before the voltage withstand test, the circuit board is in insulating connection with the shell through the fastening structure. However, in order to ensure the safety of electricity, after the voltage withstand test, the circuit board and the casing should be grounded, so that the fixing mode of the circuit board and the external casing needs to be changed, the disassembly of the fastening structure may be involved, the operation is complex, the working procedure is complex, and the production efficiency of the electronic equipment is affected.

Disclosure of Invention

The utility model mainly aims to provide electronic equipment, which aims to simplify the whole pressure-resistant test procedure and improve the production efficiency of the electronic equipment.

In order to achieve the above object, an electronic device according to the present utility model includes:

lid, circuit board, earthing device and first fastener, the lid with earthing device fixed connection, the circuit board is located the lid with between the earthing device, first fastener includes first mounting and second mounting, first mounting is located the circuit board deviates from earthing device's one side, and with circuit board conductive connection, the second mounting passes in proper order earthing device with the circuit board, and fastening connection in first mounting, just the second mounting respectively with earthing device with first mounting conductive connection.

Optionally, the grounding device comprises a grounding mounting seat and a supporting piece, wherein one end of the supporting piece is fixed on the grounding mounting seat, and the other end of the supporting piece is supported on one side, close to the grounding mounting seat, of the circuit board.

Optionally, the support is integrally formed with the ground mount.

Optionally, the support is formed separately from the ground mount.

Optionally, the ground mount is configured as a heat sink.

Optionally, the first fixing piece includes a fixing portion and a connecting portion that are connected to each other, the fixing portion is used for being fixed with the second fixing piece, and the connecting portion is fixed in one side of the circuit board facing away from the grounding device.

Optionally, the first fixture is configured as a clinch nut.

Optionally, a sealing element is disposed on a side of the grounding device facing away from the circuit board, the second fixing element penetrates through the sealing element, and the blocking end of the second fixing element presses the sealing element on the grounding device.

Optionally, the electronic device further includes a second fastening device, where the second fastening device is disposed at a distance from the first fastening device, and the second fastening device connects the circuit board and the grounding device respectively, and insulates the circuit board from the grounding device.

Optionally, the second fastening device includes a third fixing member and an insulating member, where the third fixing member is fastened to the circuit board and the grounding device, and the insulating member is disposed between the third fixing member and the circuit board, or between the third fixing member and the grounding device.

According to the technical scheme, the circuit board, the cover body, the grounding device and the first fastening device are arranged, the cover body is fixedly connected with the grounding device, the circuit board is arranged between the cover body and the grounding device, the first fastening device comprises a first fixing piece and a second fixing piece, the first fixing piece is arranged on one side, away from the grounding device, of the circuit board and is in conductive connection with the circuit board, and the second fixing piece sequentially penetrates through the grounding device and the circuit board and is fixedly connected with the first fixing piece. Therefore, the circuit board is grounded and connected with the grounding device through the cooperation between the second fixing piece and the first fixing piece, and the circuit board can be further fixed on the grounding device. The first mounting is fixed in the circuit board and deviates from one side of earthing device for after withstand voltage test is accomplished, can directly carry out the installation of second mounting, the second mounting passes earthing device and circuit board in proper order, and fastening connection is in first mounting, install the second mounting by earthing device's bottom promptly, also directly install the second mounting by the casing outside promptly, make need not to dismantle other fastener before carrying out withstand voltage test, need not to dismantle the lid, also need not to install the circuit board again, only need install the second mounting on the electronics can, so reduced withstand voltage test's process, improve production beat. And the risk of second mounting smooth silk also can be reduced to need not to carry out the dismantlement repeatedly of second mounting.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of the electronic device of fig. 1 after the cover is removed;

FIG. 3 is a schematic view of a first fastening device in the electronic device of FIG. 1;

fig. 4 is a cross-sectional view of a first fastening device in the electronic device of fig. 1.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	First fastening device	210	Grounding mounting seat
110	First fixing piece	211	Radiator
				111	Fixing part	220	Circuit board
112	Connecting part	230	Cover body
				120	Second fixing piece	300	Second fastening device
130	Support member	310	Third fixing piece
				140	Sealing element	311	Blocking end
200	Electronic equipment	320	Insulating member

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiment of the present utility model, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

An electronic device 200 may be an inverter, a frequency converter, a transformer, etc.

In the embodiment of the present utility model, as shown in fig. 1 to 4, the electronic device 200 includes a circuit board 220, a cover 230, a grounding device and a first fastening device 100, the cover 230 is fixedly connected with the grounding device, the circuit board 220 is disposed between the cover 230 and the grounding device, the first fastening device 100 includes a first fixing member 110 and a second fixing member 120, the first fixing member 110 is disposed on a side of the circuit board 220 facing away from the grounding device and is electrically connected with the circuit board 220, the second fixing member 120 sequentially passes through the grounding device and the circuit board 220 and is fixedly connected with the first fixing member 110, and the second fixing member 120 is electrically connected with the grounding device and the first fixing member 110 respectively.

Specifically, in some embodiments, to ensure the fixing of the circuit board 220, fastening structures are designed to fix the circuit board 220 on the grounding mount 210, so that not only the mounting stability of the circuit board 220 can be ensured, but also the electrical safety of the circuit board 220 can be improved. However, the electronic device 200 such as an inverter needs to be subjected to a withstand voltage test, i.e., a voltage higher than normal operation is applied to an insulator of the device under test for a certain period of time before the electronic device is put into use. If the device under test insulator remains in the prescribed range for a prescribed period of time, it is determined that the device under test can safely operate under normal operating conditions. The circuit board 220 inside the inverter cannot be set to ground during the test. Therefore, the fastening structure adopted not only ensures the installation and fixation of the circuit board 220, but also ensures that the circuit board 220 is not grounded, but also ensures the safety of electricity, and the circuit board 220 and the shell are grounded after the voltage withstand test. Therefore, the procedure of the withstand voltage test is generally that the operator needs to open the inverter cover 230 before the withstand voltage test, detach the screw after the test is completed, replace the grounding screw, reassemble the grounding screw, and then cover the cover 230, which is complex in operation, low in production efficiency, and the screw (fastening structure) is continuously detached and installed, so that the slipping phenomenon is easily generated. And the electronic equipment 200 has a certain weight, the electronic equipment 200 is inevitably required to be turned over continuously when the fastening structure is disassembled, and time and labor are wasted.

Therefore, in this embodiment, the first fastening device 100 is provided, where the first fastening device 100 includes a first fixing member 110 and a second fixing member 120, the first fixing member 110 is disposed on a side of the circuit board 220 facing away from the grounding device and is electrically connected to the circuit board 220, and the second fixing member 120 sequentially passes through the grounding device and the circuit board 220 and is fastened to the first fixing member 110, so that the circuit board 220 is grounded to the grounding device through the cooperation between the second fixing member 120 and the first fixing member 110, and the circuit board 220 can be further fixed to the grounding device. The first fixing member 110 is fixed on one side of the circuit board 220, which is away from the grounding device, so that after the voltage withstanding test is completed, the second fixing member 120 can be directly installed, and the second fixing member 120 sequentially passes through the grounding device and the circuit board 220 and is fixedly connected to the first fixing member 110, namely, the second fixing member 120 is installed at the bottom of the grounding device, namely, the second fixing member 120 is directly installed outside the shell, so that other fastening devices are not required to be disassembled before the voltage withstanding test is performed, the cover 230 is not required to be disassembled, the circuit board 220 is not required to be reinstalled, and only the second fixing member 120 is required to be installed on the electronic equipment 200. And the risk of slipping of the second fixing member 120 can be reduced without repeated disassembly of the second fixing member 120.

The first fixing member 110 is made of a conductive material, and is electrically connected to the circuit board 220 through a conductive medium, where the conductive medium may be conductive copper, conductive silver, or the like. At least one electronic device is fixed to the cover 230. In the prior art, the screws on the circuit board 220 are removed before the voltage withstand test, then the cover body 230 is locked, the cover body 230 is opened after the test is finished, the voltage withstand screws on the circuit board 220 are fixed, and then the cover body 230 is locked, so that the test of devices on the cover body 230 is generally directly omitted for shortening the time; however, in this solution, the cover 230 is not required to be detached, the voltage-resistant front circuit board 220 is already locked and grounded, and the voltage-resistant test is not affected after the cover 230 is screwed, and the voltage-resistant degree of the electronic device on the cover 230 can be tested. The cover body 230 does not need to be repeatedly disassembled and repeatedly locked, the pressure-resistant testing procedure is simple, and the pressure-resistant test can be further carried out on the electronic device on the cover body 230, so that possible missing risk points in the pressure-resistant test can be complemented, and the electricity safety of the electronic device 200 is improved.

In an embodiment, the grounding device includes a grounding mounting seat 210 and a supporting member 130, one end of the supporting member 130 is fixed to the grounding mounting seat 210, the other end is supported on one side of the circuit board 220 near the grounding mounting seat 210, and the supporting member 130 and the grounding mounting seat 210 are integrally formed. Specifically, the supporting member 130 may be made of an insulating material or a non-insulating material, and may provide a certain supporting force to the circuit board 220, so that the circuit board 220 and the ground mount 210 are fixed at a relatively-spaced position. The supporting member 130 and the grounding mounting seat 210 may be integrally formed by die casting, so that the mounting stability of the supporting member 130 and the grounding mounting seat 210 can be improved, and the mounting process can be reduced.

In another embodiment, the electronic device 200 includes a supporting member 130, one end of the supporting member 130 is fixed to the grounding mounting base 210, the other end is supported on one side of the circuit board 220 near the grounding mounting base 210, and the supporting member 130 is formed separately from the grounding mounting base 210. Specifically, the supporting member 130 may be made of an insulating material or a non-insulating material, and may provide a certain supporting force to the circuit board 220, so that the circuit board 220 and the ground mount 210 are fixed at a relatively-spaced position. Preferably, one end of the supporting member 130 is inserted into the grounding mount 210 and is screwed with the grounding mount 210. Thus, the mounting stability of the supporting member 130 and the grounding mounting seat 210 can be ensured, and the mounting of the supporting member 130 and the grounding mounting seat 210 can be facilitated. In other embodiments, the support 130 and the grounding mount 210 may be directly interference fit or irregularly shaped, inserted and fixed.

In the present embodiment, the grounding mount 210 is configured as a heat sink 211. The grounding mounting base 210 can not only mount the circuit board 220, but also dissipate heat for the circuit board 220, and simultaneously realize the grounding connection between the heat radiator 211 and the circuit board 220.

According to the technical scheme, the circuit board 220, the cover body 230, the grounding device and the first fastening device 100 are arranged, the cover body 230 is fixedly connected with the grounding device, the circuit board 220 is arranged between the cover body 230 and the grounding device, the first fastening device 100 comprises a first fixing piece 110 and a second fixing piece 120, the first fixing piece 110 is arranged on one side, away from the grounding device, of the circuit board 220 and is in conductive connection with the circuit board 220, the second fixing piece 120 sequentially penetrates through the grounding device and the circuit board 220 and is fixedly connected with the first fixing piece 110, and therefore the circuit board 220 is grounded and connected with the grounding device through cooperation between the second fixing piece 120 and the first fixing piece 110, and the circuit board 220 can be further fixed on the grounding device. The first fixing member 110 is fixed on one side of the circuit board 220, which is away from the grounding device, so that after the voltage withstanding test is completed, the second fixing member 120 can be directly installed, and the second fixing member 120 sequentially passes through the grounding device and the circuit board 220 and is fixedly connected to the first fixing member 110, namely, the second fixing member 120 is installed at the bottom of the grounding device, namely, the second fixing member 120 is directly installed outside the shell, so that other fastening devices are not required to be disassembled before the voltage withstanding test is performed, the cover 230 is not required to be disassembled, the circuit board 220 is not required to be reinstalled, and only the second fixing member 120 is required to be installed on the electronic equipment 200. And the risk of slipping of the second fixing member 120 can be reduced without repeated disassembly of the second fixing member 120.

In an embodiment, the first fixing member 110 includes a fixing portion 111 and a connecting portion 112 connected to each other, the fixing portion 111 is used for fixing with the second fixing member 120, and the connecting portion 112 is fixed to a side of the circuit board 220 facing away from the grounding device. Specifically, the connection portion 112 includes a connection plate and support arms disposed at opposite ends of the connection plate, and the support arms are disposed towards the circuit board 220, so that the fixing portion 111 of the connection portion 112 is disposed at intervals with the circuit board 220, thereby reducing the pressure connection of the connection portion 112 to the circuit board 220, reducing the possibility of damage to the circuit board 220, and facilitating the electrical connection between the first fixing member 110 and the circuit board 220.

Preferably, the first fixing member 110 is configured as a clinch nut.

In an embodiment, a sealing member 140 is disposed on a side of the grounding device facing away from the circuit board 220, the second fixing member 120 is disposed through the sealing member 140, and the blocking end 311 of the second fixing member 120 presses the sealing member 140 against the grounding device. Specifically, the first fastening device 100 includes a blocking end 311 and a connection section connected to each other for fastening connection to a fixing member through the grounding device, the support 130, and the circuit board 220 in sequence. The sealing member 140 is disposed on a side of the grounding device facing away from the circuit board 220, and the blocking end 311 of the second fixing member 120 presses the sealing member 140 against the grounding device, so that the sealing member can be sealed on the periphery of the through hole of the grounding device, thereby ensuring the tightness of the circuit board 220, and not affecting the grounding connection between the circuit board 220 and the grounding device.

Referring to fig. 1 to 3, the electronic apparatus further includes a second fastening device 300, and the second fastening device 300 and the first fastening device 100 are spaced apart to connect the circuit board 220 and the grounding device, respectively, and to insulate the circuit board 220 from the grounding mount 230. Specifically, the second fastening device 300 is mainly used for ensuring the fixation of the circuit board 220 and the grounding device, and ensuring the insulation connection of the circuit board 220 and the grounding device, so as to improve the accuracy of the voltage withstanding test, and the first fastening device 100 is mainly used for ensuring the grounding connection of the circuit board 220 and the grounding device, and further improving the installation stability of the circuit board 220 and the grounding device. Before the voltage withstanding test, only the second fastening device 300 may be provided, so as to ensure the fixing of the circuit board 220, and after the voltage withstanding test, the first fastening device 100 is installed, so that the circuit board 220 is grounded to the grounding device, and the installation stability of the circuit board 220 and the grounding device can be further improved. And the cover 230 is not required to be disassembled, so that the working procedure of pressure resistance test is reduced, and the production takt is improved. And need not to carry out the dismantlement of screw, also can reduce the risk of screw smooth silk. The second fastening device 300 and the first fastening device 100 are spaced apart on the circuit board, thereby collectively securing the mounting stability of the circuit board 220 and the grounding device.

Further, the second fastening device 300 includes a third fixing member 310 and an insulating member 320, where the third fixing member 310 is fastened to the circuit board 220 and the grounding device, and the insulating member 320 is disposed between the third fixing member 310 and the circuit board 220 or between the third fixing member 310 and the grounding device. By providing the insulator 320, the second fastening device 300 is mainly used for achieving an insulating fixation of the circuit board 220 and the grounding device.

In an embodiment, one end of the supporting member 130 is connected to the grounding device in an insulating manner, the other end is supported on a side of the circuit board 220 close to the grounding device, and the third fixing member 310 is fastened to the supporting member 130 through the circuit board 220. Specifically, and a portion of the supporting member 130 is configured as an insulating member 320, which is mounted in cooperation with the second fastening device 300, and the circuit board 220 is fixed to the ground device by cooperation between the third fixing member 310 and the supporting member 130. The supporting member 130 can provide a certain supporting force for the circuit board 220, so that the circuit board 220 and the grounding mount 210 are fixed at a relative interval. If the supporting member 130 is made of an insulating material, the supporting member 130 is formed separately from the circuit board. So that the second fastening device 300 does not need to be disassembled before the voltage withstand test is performed, and the circuit board 220 does not need to be reinstalled, thus reducing the process of the voltage withstand test and improving the tact time. And need not to carry out the dismantlement of screw, also can reduce the risk of screw smooth silk.

Further, the second fastening device 300 further includes a fourth fixing member disposed on a side of the grounding device facing away from the circuit board and electrically connected to the grounding device, and the third fixing member 310 sequentially penetrates through the circuit board 220, the supporting member 130 and the grounding device and is fastened to the fourth fixing member. Specifically, when the supporting member 130 and the circuit board are formed separately, in order to ensure the connection stability of the second fastening device 300, the possibility that the supporting member 130 is accidentally released from the grounding device and the circuit board 220 is separated from the grounding device is reduced, and after the voltage withstanding test is completed, the fourth fixing member is installed, and at this time, the fourth fixing member can be electrically connected to the grounding mounting seat through the third fixing member 310, so as to further ensure grounding of the circuit board.

In another embodiment, the third fixing member 310 includes a blocking end 311 and a connection section connected to each other, the connection section passes through the circuit board 220 and is fastened to the grounding device, and the insulating member 320 is disposed between the blocking end 311 and the circuit board. That is, the third fixing member 310 is isolated from the circuit board 220 by the insulating member 320, so as to ensure the insulating connection between the circuit board 220 and the grounding device, and the supporting member 130 may be made of insulating material or non-insulating material. Of course, the second fastening device 300 may be mounted in other manners, such as insulating the third fixing member 310.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An electronic device, comprising:

2. The electronic device of claim 1, wherein the grounding means comprises a ground mount and a support member, one end of the support member being fixed to the ground mount and the other end being supported on a side of the circuit board adjacent to the ground mount.

3. The electronic device of claim 2, wherein the support is integrally formed with the ground mount.

4. The electronic device of claim 2, wherein the support is molded separately from the ground mount.

5. The electronic device of claim 2, wherein the ground mount is configured as a heat sink.

6. The electronic device of claim 1, wherein the first fixing member includes a fixing portion and a connecting portion connected to each other, the fixing portion being for fixing with the second fixing member, the connecting portion being fixed to a side of the circuit board facing away from the grounding device.

7. The electronic device of claim 6, wherein the first fixture is configured as a clinch nut.

8. The electronic device of claim 1, wherein a sealing member is disposed on a side of the grounding device facing away from the circuit board, the second fixing member is disposed through the sealing member, and a blocking end of the second fixing member presses the sealing member against the grounding device.

9. The electronic device of any one of claims 1 to 8, further comprising a second fastening means disposed in spaced relation to the first fastening means, the second fastening means connecting the circuit board and the grounding means, respectively, and insulating the circuit board from the grounding means.

10. The electronic device of claim 9, wherein the second fastening means comprises a third fixing member and an insulating member, the third fixing member being fastened to the circuit board and the grounding means, the insulating member being provided between the third fixing member and the circuit board or between the third fixing member and the grounding means.