The ground connection structure of electronic component on the circuit board
Technical field
The utility model relates to ground structure, more particularly, relates to the ground connection structure of electronic component on a kind of circuit board.
Background technology
In a lot of electronic equipments, need to test and debug the related elements on the circuit board, such as need play the debugging of Hi-pot test and curstomer`s site to the ground connection of the non-major loops such as piezo-resistance and safety electric capacity, in this test and debug process, need said elements is selected ground connection or disconnection.
In existing electronic equipment, mostly use hard wire jumper connection or use contact pin, inserted sheet connected mode ground connection.
In the connected mode of using hard wire jumper ground connection, when not needing ground connection, wire jumper to be cut off, this process is irreversible, and namely having no progeny between wire jumper to reconnect ground connection, can't realize repeatedly testing and debugging.In using contact pin, inserted sheet grounding connection mode, often need to open casing and plug operation, end of operation reinstalls casing again, relatively trouble.
The utility model content
The technical problems to be solved in the utility model is, for the problem of above-mentioned ground structure underaction, complex operation, provides the ground connection structure of electronic component on a kind of circuit board.
The technical scheme that the utility model solves the problems of the technologies described above is, the ground connection structure of electronic component on a kind of circuit board is provided, and comprises the common ground terminal and the element earth terminal that are fixed on the circuit board, wherein: described common ground terminal ground connection; Described element earth terminal is electrically connected electronic component; Having in gap and described common ground terminal and the element earth terminal one between described common ground terminal and the element earth terminal strides and stands in another top; Has through hole on one above being positioned in described common ground terminal and the element earth terminal; Described common ground terminal and element earth terminal also are electrically connected respectively the attachment screw of this common ground terminal and element earth terminal and realize being electrically connected by passing described through hole.
On circuit board described in the utility model in the ground connection structure of electronic component, described common ground terminal is striden and is stood in element earth terminal top, described through hole is positioned at the common ground terminal and this through hole is provided with screw thread, and the end of described attachment screw is resisted against the electrical connection that the element earth terminal is realized described common ground terminal and element earth terminal when this attachment screw is screwed into described through hole.
On circuit board described in the utility model in the ground connection structure of electronic component, described element earth terminal is striden and is stood in common ground terminal top, described through hole is positioned at the element earth terminal and this through hole is provided with screw thread, and the end of described attachment screw is resisted against the electrical connection that the common ground terminal is realized described common ground terminal and element earth terminal when this attachment screw is screwed into described through hole.
On circuit board described in the utility model in the ground connection structure of electronic component, described common ground terminal is striden and is stood in element earth terminal top, described through hole is positioned at that the position corresponding with described through hole has screw on common ground terminal and the described element earth terminal, and the screw that described attachment screw passes the through hole of common ground terminal and is screwed to the element earth terminal is realized the electrical connection of common ground terminal and element earth terminal.
On circuit board described in the utility model in the ground connection structure of electronic component, described element earth terminal is striden and is stood in common ground terminal top, described through hole is positioned at that the position corresponding with described through hole has screw on element earth terminal and the described common ground terminal, and the screw that described attachment screw passes the through hole of element earth terminal and is screwed to the common ground terminal is realized the electrical connection of common ground terminal and element earth terminal.
On circuit board described in the utility model in the ground connection structure of electronic component, described common ground terminal is striden and is stood in element earth terminal top and described through hole is positioned at the common ground terminal, described through hole is provided with that the position corresponding with described through hole has screw on screw thread and the described element earth terminal, and described attachment screw is screwed into described through hole and realizes being electrically connected of described common ground terminal and element earth terminal with screw.
On circuit board described in the utility model in the ground connection structure of electronic component, described element earth terminal is striden and is stood in common ground terminal top and described through hole is positioned at the element earth terminal, described through hole is provided with that the position corresponding with described through hole has screw on screw thread and the described common ground terminal, and described attachment screw is screwed into described through hole and realizes being electrically connected of described common ground terminal and element earth terminal with screw.
In the ground connection structure of electronic component, described circuit board is positioned at cabinet and described cabinet is provided with the perforate that penetrates for attachment screw on circuit board described in the utility model.
In the ground connection structure of electronic component, described circuit board is provided with a plurality of independently element earth terminals and each element earth terminal is electrically connected respectively different electronic components on circuit board described in the utility model.
In the ground connection structure of electronic component, the electronic component that described and a plurality of element earth terminals are electrically connected comprises piezo-resistance, safety electric capacity on circuit board described in the utility model.
The ground connection structure of electronic component has following beneficial effect on the circuit board of the present utility model: by the electrical connection of attachment screw realization common ground terminal and element earth terminal, thus the ground connection of having realized electronic component.Flexible structure of the present utility model can arrange a plurality of element earth terminals according to specific requirement, to realize the ground connection of a plurality of electronic components.And connection of the present utility model or opening operation are reversible, only need screwdriver to be screwed into or to unclamp attachment screw and get final product, and be easy and simple to handle.In addition, the utility model is realized the ground connection in the cabinet or disconnection by perforate is set at cabinet, be need not to open cabinet.
Description of drawings
Fig. 1 is the schematic diagram of ground connection structure first embodiment of electronic component on the utility model circuit board.
Fig. 2 is the schematic diagram of ground connection structure second embodiment of electronic component on the utility model circuit board.
Fig. 3 is the schematic diagram that the ground connection structure of electronic component on the utility model circuit board is used.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, be the schematic diagram of the ground connection structure embodiment of electronic component on the utility model circuit board.In the present embodiment, ground connection structure comprises common ground terminal 12 and two element earth terminals 13, wherein above-mentioned common ground terminal 12 and element earth terminal 13 are separately fixed on the circuit board 11, and common ground terminal 12 ground connection, two element earth terminals 13 are separate and be electrically connected respectively different electronic components (for example two element earth terminals 13 are electrically connected respectively piezo-resistance and safety electric capacity).Certainly, the as required quantity setting of the electronic component of ground connection of the quantity of element earth terminal 13.
Above-mentioned common ground terminal 12 and element earth terminal 13 have respectively two fixing feet and the connecting portions between two fixing feet that are fixed on the circuit board 11.Common ground terminal 12 is striden and is stood in element earth terminal 13 tops, be two fixing feet of common ground terminal 12 be positioned at the both sides of element earth terminal 13 and this common ground terminal 12 connecting portion in the top of element earth terminal 13 (element earth terminal 13 is between common ground terminal 12 and circuit board 11), and have the gap between common ground terminal 12 and the element earth terminal 13.At least part of top that is positioned at the connecting portion of element earth terminal 13 of the connecting portion of common ground terminal 12, and this be positioned at the top part have through hole 121, wherein the quantity of through hole 121 is consistent with the quantity of element earth terminal 13.
Common ground terminal 12 and element earth terminal 13 also are electrically connected respectively the attachment screw 14 of this common ground terminal 12 and element earth terminal 13 and realize being electrically connected by passing above-mentioned through hole 121.Because common ground terminal 12 ground connection, therefore when common ground terminal 12 and 13 electrical connection of element earth terminal, element earth terminal 13 is ground connection also.When associated electronic components did not need ground connection, the attachment screw that only need be electrically connected counter element earth terminal 13 unclamped and gets final product.
When realizing that by attachment screw 14 common ground terminal 12 is electrically connected with element earth terminal 13, can adopt following structure: the screw thread that matches at the screw thread of through hole 121 settings and attachment screw 14.When being electrically connected common ground terminal 12 with element earth terminal 13, only need attachment screw 14 is screwed into through hole 121, the connecting portion that makes the end of attachment screw 14 be resisted against element earth terminal 13 gets final product; When electronic component need not ground connection, the connecting portion that reverse rotation attachment screw 14 makes its end break away from element earth terminal 13 got final product.
When realizing that by attachment screw 14 common ground terminal 12 is electrically connected with element earth terminal 13, also can adopt following structure: position corresponding with through hole 121 on the connecting portion of element earth terminal 13 arranges screw.When being electrically connected common ground terminal 12 with element earth terminal 13, only need attachment screw 14 is passed the screw that through hole 121 is screwed to element earth terminal 13, thereby the nut of attachment screw 14 part is electrically connected with common ground terminal 12, threaded portion is electrically connected with element earth terminal 13; When electronic component need not ground connection, reverse rotation attachment screw 14 made it break away from the screw (can take out) of element earth terminal 13.
Certainly, when realizing that by attachment screw 14 common ground terminal 12 is electrically connected with element earth terminal 13, also can adopt following structure: at through hole 121 internal thread is set, at element earth terminal 13 screw is set simultaneously, thereby attachment screw 14 can directly be screwed to through hole 121 and screw.In this structure, ground connection is identical with said structure with opening operation.
As shown in Figure 2, be the schematic diagram of ground connection structure second embodiment of electronic component on this utility model circuit board.In the present embodiment, being fixed on element earth terminal 23 on the circuit board 21 strides and stands on the common ground terminal 22, be that common ground terminal 22 is between circuit board 21 and element earth terminal 23, and at element earth terminal 23 through hole 231 is set, be electrically connected respectively with element earth terminal 23, common ground terminal 22 by the attachment screw 24 that penetrates through hole, thereby realize element earth terminal 23 ground connection.When realizing being electrically connected of common ground terminal 22 and element earth terminal 23, can internal thread be set at the through hole 231 of element earth terminal 23 equally and/or at common ground terminal 22 screw be set.
As shown in Figure 3, the ground connection structure of electronic component can directly be applied in the equipment with cabinet 30 on the foregoing circuit plate.In this equipment, circuit board 11 is installed in the cabinet 30, and cabinet 30 is over against common ground terminal 12(or the element earth terminal 13 of circuit board 11) on the position of through hole perforate 301 is set, the size of this perforate 301 gets final product greater than the size of attachment screw 14, thereby attachment screw can be screwed into through hole or screw by this perforate 301, realization common ground terminal 12 is electrically connected with element earth terminal 13.
When having a plurality of element earth terminal 13 on the circuit board 11, the perforate of respective amount can be set at cabinet 30; Also can arrange one than large opening, can carry out the ground connection operation to a plurality of element earth terminals 13 by this perforate.
Above-mentioned ground connection structure quite flexible, can arrange according to specific requirement increases the element earth terminal, and extensibility is strong.And connection or the opening operation of said structure are reversible, only need screwdriver to be screwed into or to unclamp attachment screw and get final product, and be easy and simple to handle.In addition, the utility model is realized the ground connection in the cabinet or disconnection by perforate is set at cabinet, be need not to open cabinet.
The above; it only is the better embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.