CN210326234U - Conductive connecting piece and electrical equipment - Google Patents
Conductive connecting piece and electrical equipment Download PDFInfo
- Publication number
- CN210326234U CN210326234U CN201921264530.1U CN201921264530U CN210326234U CN 210326234 U CN210326234 U CN 210326234U CN 201921264530 U CN201921264530 U CN 201921264530U CN 210326234 U CN210326234 U CN 210326234U
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- conductive
- welding
- circuit board
- flexible
- connecting piece
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- 238000003466 welding Methods 0.000 claims abstract description 45
- 239000011888 foil Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 38
- 238000005476 soldering Methods 0.000 claims description 17
- 229910000679 solder Inorganic materials 0.000 claims description 11
- 239000011889 copper foil Substances 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 description 35
- 239000010949 copper Substances 0.000 description 35
- 238000003754 machining Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 241000238367 Mya arenaria Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The embodiment of the utility model provides a conductive connecting piece and electrical equipment, the conductive connecting piece comprises a welding part, a locking part and a soft connecting part; wherein: the flexible connecting part comprises a plurality of layers of metal foils which are overlapped, one end of the flexible connecting part is in conductive connection with the welding part, and the other end of the flexible connecting part is in conductive connection with the locking part; the welding part comprises a welding leg for welding and fixing the conductive connecting piece to a circuit board, and the locking part comprises a fixing hole for fixing the conductive connecting piece to a wiring terminal in an overlapping mode. The embodiment of the utility model provides an assembly tolerance is absorbed through the deformability of soft connecting portion, has avoided the circuit board easily to receive when the assembly and has dragged and ejecting problem, has improved the reliability of electrically conductive connecting piece leg and the reliability of the peripheral paster device of leg.
Description
Technical Field
The embodiment of the utility model provides a relate to power transmission and distribution field, more specifically say, relate to a conductive connecting piece and electrical equipment.
Background
In order to meet the requirements of dust prevention and safety regulations, most electrical equipment installs the circuit board in the case, and the circuit board is in conductive connection with the wiring terminal on the case through a copper bar. At present, a circuit board in an electrical device is electrically connected with a wiring terminal on a chassis mainly through the following three ways:
(1) the scheme of firstly welding and then locking the hard copper bars is that one end of each hard copper bar 13 is firstly welded to the circuit board 11, and after the circuit board is fixed to the case 12, the other end of each hard copper bar 13 is locked to the wiring terminal 14 on the case 12 through the screw 15, as shown in fig. 1. In this solution, a multi-stage assembly is involved and there are multi-stage tolerances: the welding floating height a1 of the hard copper bar 13, the machining tolerance b1 of the hard copper bar 13, the machining tolerance d1 of the external terminal 14, the machining tolerance e1 of the case 12 and the like, as shown in fig. 2, determine the locking clearance c1 of the hard copper bar 13. If the locking clearance c1 is positive, the hard copper bar 13 will be pulled when the hard copper bar is locked; if the locking clearance c1 is negative, the external terminals 14 will be pressed against the hard copper bars 13 when the circuit board 11 is assembled to the chassis 12. Both of the above conditions stress the solder joints of the rigid copper bar 13 and also stress the surrounding chip devices and may cause the chip devices to fail.
(2) The hard copper bar lapping scheme is to lock one end of the hard copper bar 23 to the connecting terminal 24 on the chassis 22 through the screw 25, and lock the other end of the hard copper bar 23 to the circuit board 21 through the screw 26 after the circuit board is fixed to the chassis 22, as shown in fig. 3. In this solution, too, a multi-stage assembly is involved and multi-stage tolerances exist: the machining tolerance b2 of the hard copper bar 23 and the machining tolerance c2 of the external terminal 24; machining tolerances d2, etc. of the chassis 22, which determine the locking clearance a2 of the row of hard copper 23, as shown in fig. 4. If the locking clearance a2 is positive, the circuit board 21 will be pulled when the rigid copper bar 23 is locked with the circuit board 21; if the locking clearance a2 is negative, the hard copper bar 23 will abut the circuit board 21 when the circuit board 21 is mounted to the chassis 22. Both of these conditions cause stress to the circuit board 21 and affect the peripheral chip devices, rendering the chip devices ineffective.
(3) The scheme of locking and welding the hard copper bar first is that one end of the hard copper bar 33 is locked and fixed to the external terminal 34 on the case 32 by using a screw, and after the circuit board 31 is fixed to the case 32, the other end of the hard copper bar 33 is welded to the circuit board 31. In this solution, it also involves a multi-stage assembly and there are multi-stage tolerances: the machining tolerance a3 of the circuit board 31, the machining tolerance b3 of the hard copper bar 33, the machining tolerance d3 of the external connection terminal 34, the machining tolerance d3 of the chassis 32 and the like determine the length a3 of the wire pin of the hard copper bar 33. If the length a3 of the outgoing line pin is too large, the outgoing line pin of the hard copper bar 33 may be short-circuited with the case 32, and additional line pin cutting is required, so that additional cost is increased; if the length a3 of the outgoing line pin is too small, the pin of the hard copper bar 33 may be welded insecurely or fall off, resulting in no output. In addition, this scheme needs extra equipment and manpower because adopt the postweld.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a when using hard copper bar connecting circuit board and external terminal to the aforesaid, lead to producing stress to the circuit board because of having tolerance at different levels to influence the problem of peripheral paster device, provide a conductive connecting piece and electrical equipment.
The embodiment of the present invention provides a conductive connecting member, including a welding portion, a locking portion and a flexible connecting portion; wherein: the flexible connecting part comprises a plurality of layers of metal foils which are overlapped, one end of the flexible connecting part is in conductive connection with the welding part, and the other end of the flexible connecting part is in conductive connection with the locking part; the welding part comprises a welding leg for welding and fixing the conductive connecting piece to a circuit board, and the locking part comprises a fixing hole for fixing the conductive connecting piece to a wiring terminal in an overlapping mode.
Preferably, the welding part is formed by splitting, melting and pressure welding a plurality of stacked metal foils integrated with the soft connecting part.
Preferably, the locking part is formed by splitting, melting and pressure welding a plurality of layers of metal foils which are integrally stacked with the flexible connecting part.
Preferably, the periphery of the soft connecting part is coated with an insulating soft shell.
Preferably, the metal foil is a copper foil with the thickness of 0.05-0.3 mm.
Preferably, the solder tail protrudes from an end of the soldering portion away from one end of the soft connecting portion.
The utility model also provides an electrical equipment, fix including quick-witted case, installation external terminal on the quick-witted case is fixed with the installation circuit board of machine incasement, electrical equipment still includes as above arbitrary the electrically conductive connecting piece, electrically conductive connecting piece pass through the weld part with circuit board welded fastening, just electrically conductive connecting piece passes through the lock pay portion with external terminal is connected fixedly.
Preferably, a linear distance between one end of the welding part connected with the flexible connecting part and one end of the locking part connected with the flexible connecting part is smaller than the length of the flexible connecting part.
Preferably, the external terminal is located on a bottom plate of the chassis, and the circuit board is mounted and fixed in the chassis in a manner parallel to the bottom plate of the chassis; the welding part is perpendicular to the locking part.
Preferably, one end of the welding part, which is far away from the flexible connecting part, is provided with a plurality of the solder legs, and the solder legs of the welding part are fixed on the circuit board through wave soldering.
The utility model discloses electrically conductive connecting piece and electrical equipment have following beneficial effect: the assembly tolerance is absorbed through the deformability of the flexible connecting part on the conductive connecting piece, the problem that the circuit board is easy to pull and eject during assembly is avoided, and the reliability of the welding leg of the conductive connecting piece and the reliability of the peripheral patch device of the welding leg are improved.
Drawings
FIG. 1 is a schematic view of a prior art structure for connecting a circuit board and an external terminal, in which a hard copper bar is welded first and then locked;
FIG. 2 is a schematic diagram illustrating tolerances at various levels in the circuit board and external terminal connection structure of FIG. 1;
FIG. 3 is a schematic diagram of a conventional hard copper bar lapping scheme in a circuit board and external terminal connection structure;
FIG. 4 is a schematic view of the tolerances of the circuit board and external terminal connection of FIG. 3 at various stages;
FIG. 5 is a schematic diagram of the tolerances of the prior art circuit board and external terminal connection structure in the scheme of first locking and then welding the hard copper bar;
fig. 6 is a schematic structural diagram of a conductive connecting member according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electrical device according to an embodiment of the present invention;
fig. 8 is a schematic view of a connection structure between a conductive connection member and a circuit board in an electrical device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 6, it is the structure diagram of the conductive connecting piece provided by the embodiment of the present invention, the conductive connecting piece can be applied to electrical equipment, and the whole conductive connecting piece is of a copper bar structure, i.e. a flat bar shape, and can realize large current transmission. The conductive connecting member 63 of the present embodiment specifically includes a soldering portion 631, a locking portion 632, and a flexible connecting portion 633; the flexible connecting portion 633 comprises a plurality of stacked metal foils, one end of the flexible connecting portion 633 is electrically connected to the soldering portion 631, and the other end of the flexible connecting portion 633 is electrically connected to the locking portion 632. Also, the soldering portion 631 includes a soldering leg 6311 for soldering and fixing the conductive connector 63 to the circuit board, and the locking portion 632 includes a fixing hole 6321 for lap-fixing the conductive connector 63 to the terminal.
The soldering portion 631 and the locking portion 632 are each formed of a hard member, and the conductive connector 63 is soldered to the circuit board by the soldering portion 631, and the conductive connector 63 is fixed to the terminal by being overlapped (conductively connected) by the locking portion 632. Moreover, in order to facilitate the welding operation, the leg 6311 of the welding portion 631 may protrude from an end of the welding portion 631 away from the end of the soft connection portion 633.
The conductive connecting piece can absorb assembly tolerance through the deformability of the flexible connecting part 633 so as to absorb tolerance between two devices, and the welding reliability of the welding leg 6311 of the conductive connecting piece 63 is improved.
In another embodiment of the present invention, the welding portion 631 of the conductive connecting member 63 may be formed by a multi-layer metal foil laminated together with the flexible connecting portion 633 through a split melting and pressure welding process. Through the structure, the consistency of the conductive connecting piece 63 is improved, and the processing technology of the conductive connecting piece 63 is simplified. Of course, in practical applications, the welding portion 631 may also be formed by a hard copper bar, and the hard copper bar is welded or electrically connected to the soft connection portion 633 in other manners.
Similarly, the locking portion 632 may be formed by a multi-layer metal foil integrated with the flexible connecting portion 633 by split melting and pressure welding. Of course, in practical applications, the locking portion 632 may also be made of a hard copper bar, and the hard copper bar is welded or electrically connected to the soft connection portion 633 in other manners.
In order to improve electrical safety, the outer periphery of the flexible connecting portion 633 may be covered with an insulating flexible shell, such as a plastic shell with certain elasticity. By the insulating soft shell, not only can the metal foils of the soft connecting part 633 be adhered together, but also the breakage of the soft connecting part 633 caused by frequent bending can be avoided.
The metal foil forming the flexible connecting portion 633 may be a copper foil having a thickness of 0.05 to 0.3 mm. Because copper has better electric conductivity and ductility, the electric conductivity of the soft connecting part 633 can be improved, and the service life of the soft connecting part can be prolonged.
As shown in fig. 7, the embodiment of the present invention provides a schematic structural diagram of an electrical device, which can be various motor controllers or other devices with large current input/output, especially devices used in occasions with large vibration, such as automobiles. The electrical device of the present embodiment includes a chassis 60, a circuit board 61, an external terminal 64, and a conductive connector 63 as shown in fig. 6, wherein the external terminal 64 can be connected to an external power supply or an electrical device, so as to implement current input or output.
The enclosure 60 may provide electrical isolation and mechanical protection for the components therein, and the enclosure 60 includes a bottom panel and side panels. The external terminal 64 is fixed on the chassis 60, and a part of the external terminal 64 is located inside the chassis 60, and another part is located outside the chassis 60. The circuit board 61 is fixed in the chassis 60, and various electrical components are soldered on the circuit board 61, and corresponding logic processing and current conversion are realized.
The conductive connector 63 is soldered to the circuit board 61 by the solder leg 6311 of the soldering portion 631, and the conductive connector 63 is fixedly connected (conductively connected) to the external connection terminal 64 by the locking portion 632. The circuit board 61 is electrically connected to the external connection terminal 64 via the conductive connection member 63.
As shown in fig. 8, in the production of the electrical device, the conductive connecting member 63 may be soldered, for example, the conductive connecting member 63 and the circuit board 61 are wave-soldered together, then the circuit board 61 is mounted and fixed in the housing 60, and the conductive connecting member 63 is locked to the conductive portion of the external terminal 64. The flexible connecting portion 633 in the conductive connecting member 63 can absorb assembly tolerance of each stage through deformation, such as welding floating height of the conductive connecting member 63, machining tolerance of the external terminal 64, machining tolerance of the chassis 60, and the like, so that the problem that the circuit board 61 is easy to pull and push out during assembly is avoided, and welding points of the conductive connecting member 63 and peripheral chip devices cannot be loosened even in a vibration environment.
In one embodiment of the present invention, the external terminal 64 is located on the bottom plate of the case 60, and the circuit board 61 is fixed in the case 60 in a manner parallel to the bottom plate of the case 60. At this time, the welding portion 631 of the conductive connecting member 63 is perpendicular to the locking portion 632, and a linear distance between one end of the welding portion 631 connected to the flexible connecting portion 633 and one end of the locking portion 632 connected to the flexible connecting portion 633 is smaller than a length of the flexible connecting portion 633, so that the flexible connecting portion 633 is in an arc shape between the welding portion 631 and the locking portion 632, and is beneficial to absorbing assembly tolerance and relieving stress (for example, stress between the circuit board 61 and the external terminal 64) between components caused by vibration through deformation.
The end of the soldering portion 631 away from the flexible connecting portion 633 may have a plurality of solder legs 6311, and the solder legs 6311 of the soldering portion 631 are fixed on the circuit board 61 by wave soldering, so as to simplify the assembly of the electrical device and reduce the device loss and the waste of human resources.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A conductive connecting piece is characterized by comprising a welding part, a locking part and a soft connecting part; wherein: the flexible connecting part comprises a plurality of layers of metal foils which are overlapped, one end of the flexible connecting part is in conductive connection with the welding part, and the other end of the flexible connecting part is in conductive connection with the locking part; the welding part comprises a welding leg for welding and fixing the conductive connecting piece to a circuit board, and the locking part comprises a fixing hole for fixing the conductive connecting piece to a wiring terminal in an overlapping mode.
2. The conductive interconnect of claim 1, wherein the solder portion is formed by a split fusion bonding of a plurality of stacked metal foils integral with the flexible interconnect.
3. The conductive connection of claim 1, wherein the locking portion is formed by split fusion bonding of a plurality of stacked metal foils integral with the flexible connection portion.
4. The conductive connection element according to claim 1, wherein the outer periphery of the flexible connection portion is covered with an insulating flexible shell.
5. The conductive connector as set forth in claim 1, wherein the metal foil is a copper foil 0.05 to 0.3mm thick.
6. The conductive connection element according to claim 1, wherein the solder tail protrudes from an end of the soldering portion away from the end of the flexible connection portion.
7. An electrical apparatus, comprising a chassis, an external terminal fixed on the chassis, and a circuit board fixed in the chassis, wherein the electrical apparatus further comprises the conductive connecting member according to any one of claims 1 to 6, the conductive connecting member is welded to the circuit board by a welding portion, and the conductive connecting member is connected to the external terminal by the locking portion.
8. The electrical equipment of claim 7, wherein a linear distance between an end of the welding portion connected to the flexible connecting portion and an end of the locking portion connected to the flexible connecting portion is smaller than a length of the flexible connecting portion.
9. The electrical apparatus of claim 8, wherein the external terminals are located on a bottom plate of the housing, and the circuit board is mounted and fixed in the housing in a manner parallel to the bottom plate of the housing; the welding part is perpendicular to the locking part.
10. The electrical equipment of claim 7, wherein an end of the soldering portion away from the flexible connecting portion has a plurality of the solder tails, and the solder tails of the soldering portion are fixed on the circuit board by wave soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921264530.1U CN210326234U (en) | 2019-08-06 | 2019-08-06 | Conductive connecting piece and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921264530.1U CN210326234U (en) | 2019-08-06 | 2019-08-06 | Conductive connecting piece and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210326234U true CN210326234U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921264530.1U Active CN210326234U (en) | 2019-08-06 | 2019-08-06 | Conductive connecting piece and electrical equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN210326234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244055A (en) * | 2022-01-11 | 2022-03-25 | 苏州昀冢电子科技股份有限公司 | Coil assembly and voice coil motor using same |
-
2019
- 2019-08-06 CN CN201921264530.1U patent/CN210326234U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114244055A (en) * | 2022-01-11 | 2022-03-25 | 苏州昀冢电子科技股份有限公司 | Coil assembly and voice coil motor using same |
| CN114244055B (en) * | 2022-01-11 | 2023-05-26 | 苏州昀冢电子科技股份有限公司 | Coil assembly and voice coil motor using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |
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| CP03 | Change of name, title or address |