CN115498801A

CN115498801A - Motor base and manufacturing method thereof

Info

Publication number: CN115498801A
Application number: CN202211194817.8A
Authority: CN
Inventors: 徐国炜
Original assignee: Suzhou Yunzhong Electronic Technology Co ltd
Current assignee: Suzhou Yunzhong Electronic Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-20
Also published as: WO2024066370A1

Abstract

The invention relates to a motor base and a manufacturing method thereof, wherein the motor base comprises an insulating base, a metal circuit arranged on the insulating base and an electronic element welded on the metal circuit, the metal circuit comprises a plurality of conductive terminals, each conductive terminal comprises a first conductive terminal, a second conductive terminal and a third conductive terminal positioned between the first conductive terminal and the second conductive terminal, each conductive terminal comprises a welding pin end for welding the electronic element and a connecting section extending from the welding pin end, a bridge part of the first conductive terminal crosses the third conductive terminal from the corresponding connecting section so as to enable a second lap joint part of the second conductive terminal to be overlapped and fixedly connected with the first lap joint part, the problem that the single conductive terminal cannot be molded due to excessive bending times is avoided, the molding yield of the conductive terminals is improved, and the wiring space of the conductive terminals is saved.

Description

Motor base and manufacturing method thereof

Technical Field

The invention relates to the technical field of camera modules, in particular to a motor base for the field of electronic equipment and a manufacturing method thereof.

Background

The conventional motor and its motor base generally include an insulating base, a metal circuit injection-molded in the insulating base, electronic components welded to the metal circuit, a coil formed by winding or mounted and assembled, and a magnetic structure interacting with the coil. The metal circuit comprises a plurality of conductive terminals, one end of each conductive terminal is usually used as a welding pin end to be connected with the electronic element, and the other end of each conductive terminal is used as a pin end to extend out of the motor base to be connected with an external part. If the number of the electronic components is large, the number of the required conductive terminals is correspondingly large, and the large number of conductive terminals cannot be arranged in a limited space.

In order to overcome the above problems, different electronic components can be connected to the same conductive terminal, and extend out of the motor base through the same pin end to be connected with an external component, that is, two spaced conductive terminals need to be connected, so that different electronic components are connected to the same conductive terminal. However, since the electronic components need to be disposed at different positions according to functional requirements and are relatively dispersed, in order to connect different electronic components at different positions at the same time, the conductive terminals need to be bent many times to connect different electronic components, the conductive terminals not only have a long path, but also cannot be formed due to excessive bending times, or even if the conductive terminals can be formed, the conductive terminals cannot be bent and broken easily in the manufacturing process, so that the yield of the product is reduced.

Therefore, there is a need to provide a new motor base and a manufacturing method thereof to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a motor base and a manufacturing method thereof, which can avoid the condition that a conductive terminal cannot be molded due to excessive bending times and save the wiring space of the conductive terminal.

The purpose of the invention is realized by the following technical scheme one: a motor base comprises an insulating base, a metal circuit arranged on the insulating base and an electronic element welded on the metal circuit, wherein the metal circuit comprises a plurality of conductive terminals, each conductive terminal comprises a first conductive terminal, a second conductive terminal and a third conductive terminal positioned between the first conductive terminal and the second conductive terminal, each conductive terminal comprises a welding leg end and a connecting section extending from the welding leg end, the welding leg ends are welded on the electronic element, each first conductive terminal comprises a bridging portion and a first lap-joint portion extending from the bridging portion, each second conductive terminal comprises a second lap-joint portion extending from the corresponding connecting section, the bridging portion of each first conductive terminal crosses the corresponding third conductive terminal from the corresponding connecting section, so that the first lap-joint portions and the second lap-joint portions are overlapped and fixedly connected, and the insulating base is subjected to injection molding and at least coated and fixed outside the first conductive terminals and the second conductive terminals.

Furthermore, the electronic component includes at least two different electronic components, and the soldering foot ends of the first conductive terminal and the second conductive terminal are respectively soldered with two different electronic components; only one of the first conductive terminal and the second conductive terminal is provided with a pin end which extends out of the insulating base from the corresponding connecting section to be electrically connected with an external circuit, so that the first conductive terminal and the second conductive terminal share the same pin end.

Further, insulator foot includes injection moulding and cladding a plurality of plastic pieces of metal circuit, the weld foot end first overlap joint portion reaches second overlap joint portion exposes in corresponding the same surface of plastic piece, insulator foot still includes secondary injection moulding and cladding metal circuit and a plurality of the plastic body of plastic piece, it is a plurality of the vertical setting of plastic piece is located different vertical planes, and is different electronic component is located differently the plastic piece is exposed in corresponding the plastic piece.

Furthermore, the connecting section of the second conductive terminal extends from the corresponding soldering foot end and continuously spans at least three planes, and the connecting section spans from the vertical plane where the corresponding soldering foot end is located to the horizontal plane where the bottom surface of the plastic body is located, and then spans to the vertical plane where the soldering foot end of the first conductive terminal is located.

Furthermore, the overlapping position of the second overlapping part and the first overlapping part is defined as an overlapping area, the second conductive terminal and the bridging part are fixedly connected in a soldering manner, and at least one of the first overlapping part and the second overlapping part is provided with an opening for accommodating solder in the overlapping area.

Further, the first and second conductive terminals are surface-plated in the overlap area to form a gold-plated area, wherein the gold-plated area covers an upper surface of the first conductive terminal, a lower surface of the first conductive terminal opposite to the upper surface, an inner wall of the opening, and an upper wall of the second conductive terminal close to the lower surface of the first conductive terminal.

Furthermore, the first overlapping part is provided with the opening in the overlapping area, the opening is defined as a holding through hole, the holding through hole is provided with an opening end far away from the second conductive terminal and an attaching end close to the second conductive terminal, the size of the opening end is smaller than that of the attaching end, and the tin material is contained in the holding through hole.

Furthermore, the second lap joint part is provided with a convex hull protruding from the upper wall to the inside of the fixing through hole, and the tin material is contained in the fixing through hole and is concentrated on the convex hull.

Further, the first lap joint part is arranged in the overlapping area to form the opening, the opening of the first lap joint part is defined as a holding through hole, the holding through hole is provided with an opening end far away from the second conductive terminal and an attaching end close to the second conductive terminal, the second lap joint part is arranged in the overlapping area to form the opening, the opening of the second lap joint part is defined as a containing hole, the containing hole of the second lap joint part is communicated with the holding through hole in the overlapping area, and the tin material is contained in the holding through hole and the containing hole.

Further, the size of the opening end is larger than that of the abutting end, and the size of the accommodating hole is larger than that of the abutting end.

Further, the size of the opening end is larger than that of the abutting end, the fixing through hole and the accommodating hole are arranged in a staggered mode and are communicated with each other, the size of one side, close to the first lap joint portion, of the accommodating hole is smaller than that of one side, far away from the first lap joint portion, of the accommodating hole, and the tin materials are accommodated in the fixing through hole and the accommodating hole.

Furthermore, the lower surface and the upper wall of the first conductive terminal and the second conductive terminal in the overlapping region are both provided with wavy concave-convex structures, the extending directions of the concave-convex structures of the lower surface and the upper wall are different, and the tin material is contained in the concave-convex structures between the opening and the lower surface and the upper wall.

Further, the area of the first lap joint part is smaller than that of the second lap joint part, the first lap joint part is provided with an annular structure, the annular structure is arranged in a hollow mode to form the opening, the opening of the annular structure is defined as a fixing through hole, the inner wall of the annular structure is defined as a first inner wall of the fixing through hole, the outer wall of the annular structure is arranged as an outer wall surface, and the tin material is at least contained in the opening along the second lap joint part.

Furthermore, the second overlapping portion is provided with the opening, the opening is defined as a containing hole, the first overlapping portion is punched into the containing hole of the second overlapping portion in the overlapping area, and the first overlapping portion is welded and fixed to the second overlapping portion.

Furthermore, the overlapping position of the second overlapping part and the first overlapping part is defined as an overlapping area, the first overlapping part and the second overlapping part are riveted and fixed in the overlapping area, the first overlapping part is provided with a protruding part in a downward protruding mode, and the second overlapping part is provided with an accommodating hole for accommodating the protruding part in the overlapping area.

Furthermore, the overlapping position of the second overlapping part and the first overlapping part is defined as an overlapping area, the first overlapping part is arranged in the overlapping area in parallel and overlapped with the second overlapping part, and the first overlapping part and the second overlapping part are fixedly connected in a resistance welding or laser welding or riveting mode.

Further, the overlapping position of the second overlapping part and the first overlapping part is defined as an overlapping area, the first overlapping part wraps the second overlapping part in the overlapping area, and the first overlapping part is in contact connection with the second overlapping part.

Further, the bridging part is bent and extended integrally from the connecting section of the first conductive terminal; or the bridging part and the connecting section are separately arranged, the connecting section of the first conductive terminal is also provided with a third overlapping part, the bridging part is also provided with a fourth overlapping part, and the third overlapping part and the fourth overlapping part are overlapped and fixedly connected.

Further, the thickness of the bridging part is smaller than the thickness of the connecting section of the first conductive terminal and the thickness of the second conductive terminal.

Furthermore, the part of the bridging part which is not overlapped and lapped with the first conductive terminal and the second conductive terminal is provided with an insulating coating at least on one side surface facing the third conductive terminal, so that the bridging part is directly attached to the third conductive terminal.

Further, a plastic block is injected outside the metal circuit, the bridge portion is exposed to the plastic block at the overlapping part of the bridge portion and the first conductive terminal and the second conductive terminal, and the plastic block is covered at the part of the bridge portion which is not overlapped with the first conductive terminal and the second conductive terminal.

The purpose of the invention is realized by the following technical scheme II: a method of manufacturing a motor base, comprising the steps of:

the method comprises the steps that firstly, a metal circuit with a plurality of conductive terminals is provided, wherein each conductive terminal comprises a first conductive terminal, a second conductive terminal and a third conductive terminal positioned between the first conductive terminal and the second conductive terminal, each conductive terminal comprises a welding foot end and a connecting section extending from the welding foot end, the first conductive terminal comprises a bridging part connected with the connecting section and a first lap-joint part extending from the bridging part, the second conductive terminal comprises a second lap-joint part extending from the corresponding connecting section, the bridging part crosses the third conductive terminal from the corresponding connecting section, and therefore the first lap-joint part and the second lap-joint part are overlapped;

a second step of defining an overlapping region where the second overlapping portion overlaps the first overlapping portion as an overlapping region, and fixedly connecting the first overlapping portion and the second overlapping portion in the overlapping region;

thirdly, positioning the electronic element at the corresponding welding foot end and welding;

and fourthly, injection molding the insulating base on the metal circuit.

Further, before the second step, a thimble jig is provided to butt and position the overlapping and overlapping area of the first conductive terminal and the second conductive terminal, a plastic block is injection molded at the metal circuit, and the welding foot end, the first overlapping portion and the second overlapping portion are exposed on the same surface of the corresponding plastic block.

Furthermore, the fixed connection adopts a tin welding mode, before the second step, the first lap joint part and the second lap joint part are subjected to tin material dotting in the overlapping area, and then the first lap joint part and the second lap joint part are welded in a reflow furnace to complete the fixed connection.

Furthermore, at least one of the first lap joint part and the second lap joint part is provided with an opening for containing tin material in the overlapping and lap joint area.

Further, the bridging part is integrally bent and extended from the connecting section of the first conductive terminal; or the bridging part and the connecting section are separately arranged, the connecting section of the first conductive terminal is also provided with a third overlapping part, the bridging part is also provided with a fourth overlapping part, and in the second step, the first overlapping part and the fourth overlapping part are respectively and correspondingly overlapped with the second overlapping part and the third overlapping part and are fixedly connected.

Furthermore, the first lap joint part and the second lap joint part are overlapped and lapped in parallel, the fixed connection adopts a laser welding mode, and the first lap joint part and the second lap joint part are subjected to laser welding.

Furthermore, the fixed connection adopts a riveting connection mode, the first lap joint part is provided with a protruding part protruding downwards in the overlapping area, and the second lap joint part is provided with a containing hole for containing the protruding part in the overlapping area.

Furthermore, the fixed connection adopts a riveting connection mode, and the first lap joint part wraps the second lap joint part in the overlapping and overlapping area and is fixedly connected with the second lap joint part.

According to the invention, the bridging parts of the first conductive terminals in the motor base cross the third conductive terminals from the corresponding connecting sections, so that the first lapping parts and the second lapping parts of the second conductive terminals are lapped and fixedly connected, the problem that the single conductive terminal cannot be molded due to excessive bending times is avoided, the molding yield of the conductive terminals is improved, and the wiring space of the conductive terminals is saved.

Drawings

Fig. 1 is a perspective view of a motor base according to a first embodiment of the present invention.

Fig. 2 is a perspective view of fig. 1 viewed from another direction.

Fig. 3 is an exploded perspective view of a motor base according to a first embodiment of the present invention.

Fig. 4 is a further exploded perspective view of fig. 3.

Fig. 5 is an angle diagram of the first retaining wall of the plastic block in fig. 3.

Fig. 6 is another angle view of the first retaining wall of the plastic block in fig. 3.

Fig. 7 is a partially enlarged view of fig. 4.

Fig. 8 is a top view of the metal circuit of fig. 4.

Fig. 9 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 8.

Fig. 10 is a partially enlarged view of fig. 9.

Fig. 11 is an enlarged view of a cross-sectional view of an overlap region in a second embodiment of the invention.

Fig. 12 is an enlarged view of a cross-sectional view of an overlap region in a third embodiment of the invention.

Fig. 13 is an enlarged view of a cross-sectional view of an overlap region in a fourth embodiment of the present invention.

Fig. 14 is an enlarged view of a cross-sectional view of an overlap region in a fifth embodiment of the invention.

Fig. 15 is a schematic perspective view of an overlap region in a sixth embodiment of the present invention.

Fig. 16 is an enlarged view of a cross-sectional view of an overlap region in a sixth embodiment of the invention.

Fig. 17 is a perspective view of an overlap region in the seventh embodiment of the present invention.

Fig. 18 is an enlarged view of a cross-sectional view of an overlap region in the seventh embodiment of the present invention.

Fig. 19 is a plan view of a motor base in an eighth embodiment of the present invention.

Fig. 20 is a cross-sectional view taken along line B-B of fig. 19.

Fig. 21 is a partially enlarged view of fig. 20.

Fig. 22 is a perspective view of an overlap region in the ninth embodiment of the present invention.

Fig. 23 is an enlarged view of a cross-sectional view of an overlap region in a ninth embodiment of the invention.

Fig. 24 is a perspective view of an overlap region in a tenth embodiment of the invention.

Fig. 25 is an enlarged view of a cross-sectional view of an overlap region in the tenth embodiment of the present invention.

Fig. 26 is a perspective view of a metal circuit in the eleventh embodiment of the present invention.

Fig. 27 is an enlarged view of the overlap region of fig. 26.

Description of the main elements

Referring to the following reference numerals, the motor base 100; a metal circuit 1; first conductive terminals 11, 11A,11B,11C,11D,11F,11G,11H,11I,11J,11K; the first bridge 110,110A,110B,110C,110D,110F,110G,110H,110I,110J,110K; holding through holes 111, 111B,111C,111D,111H,1110I; open ends 1111, 1111B,1111C,1111D,1111H; abutting ends 1112,1112B,1112C,1112D and 1112H; the boss 111F; a bent portion 111G; first inner walls 1113, 1113B,1113C,1113D,1113H,1111I; an outer wall surface 1112I; a concave-convex structure 13H; annular structure 111I; upper surfaces 112, 112B,112C,112D,112H,112I; lower surfaces 113, 113B,113C,113D,113H,113I; a main body portion 111J; a first bent section 112J; a second bent section 113J; second conductive terminals 12, 12A,12B,12C,12D,12F,12G,12H,12I,12J,12K; second lap joint portions 120, 120A,120B,120C,120D,120F,120G,120H,120I,120J,120K; upper walls 121, 123b,121c,121d,121h,121i; receiving holes 122D,122F,122G; second inner walls 122b,1221d; a convex hull 1211C; a groove 121B; third conductive terminals 13, 13K; a card block 1101G; a yield gap 1221G; a pin end 14; a solder tail 15; a span section 16; connecting sections 17, 17K; a third lap joint portion 171K; bridge portions 18, 18K; a fourth lap joint portion 181K; an electronic component 2; an insulating base 3; a plastic body 31; a plastic block 4; a first retaining wall 41; a carrier groove 410; a concave groove 4101; a step portion 411; a second retaining wall 42; a third baffle wall 43; a coil 5; 6, tin material; an overlap joint region R; a concave hole S; a first plane P1; a second plane P2; a third plane P3; a fourth plane P4.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that the term "connected" is to be interpreted broadly, unless otherwise explicitly specified or limited, and the specific meaning of the above terms in the present invention can be understood as specific conditions by those skilled in the art.

The conductive terminals in the motor base 100 of the present invention include two first conductive terminals, two second conductive terminals and a third conductive terminal between the first conductive terminals and the second conductive terminals, the first conductive terminals cross over the third conductive terminals after bending over the lines and overlap with the second conductive terminals, and then are subjected to one-time injection molding to form the plastic blocks 4 to realize mutual positioning, and are directly and fixedly connected by welding or riveting so as to facilitate the electrical connection between the first conductive terminals and the second conductive terminals. By adopting the technical scheme of the invention, the motor base 100 does not need to be connected with different electronic elements 2 by only bending one conductive terminal in a cross-line mode for many times, but two conductive terminals with relatively short conductive paths are arranged for connection processing, so that local fixed connection and electrical connection are realized, and in the embodiment, the first conductive terminal and the second conductive terminal can share the pin end 14 because of mutual fixed connection and electrical connection. Therefore, according to the technical scheme, the problem that one conductive terminal cannot be molded due to excessive bending times can be avoided, different electronic elements 2 can be connected to the same pin end, and the wiring space of the conductive terminal is saved. The two conductive terminals are overlapped and overlapped to enable the contact area between the two conductive terminals to be larger, the electric connection performance after connection processing is better, and at least one of the first conductive terminal and the second conductive terminal is bent in three directions, so that the strength of the motor base 100 is improved.

Referring to fig. 1 to 27, the motor base 100 includes an insulating base 3, the metal circuit 1 disposed on the insulating base 3, and an electronic component 2 soldered to the metal circuit 1. The insulating base 3 comprises a plurality of plastic blocks 4 which are formed by one-time injection molding and cover the metal circuit 1, and a plastic body 31 which is formed by two-time injection molding and at least covers the metal circuit 1 and the plurality of plastic blocks 4. The electronic component 2 is positioned on the plastic block 4 and exposed to the plastic block 4. In the present invention, the electronic component 2 refers to an IC chip, a hall element, a capacitor, an inductor, or other electronic components. Each of the conductive terminals includes a solder tail end 15 for soldering the electronic component 2 and a connecting section for connecting the solder tail end 15. In the embodiment of the present application, the metal circuit 1 at least includes two conductive terminals connected to different electronic components 2 and disposed at an interval, and at least one third conductive terminal located between the two conductive terminals, one of the two conductive terminals has a pin end 14 connected to the connection section and exposed outside the insulating base 3, and the two conductive terminals share the pin end 14. In the first to eleventh embodiments of the present application, the two conductive terminals are defined as a first conductive terminal and a second conductive terminal, and specifically, the first conductive terminals are defined as first conductive terminals 11, 11a,11b,11c, 111d, 11f,11g, 111h, 111i, 111j, and 11k in all the embodiments below. The second conductive terminals are defined as second conductive terminals 12, 12a,12b,12c,12d,12f,12g,12h,12i,12j and 12k in all the embodiments below, and the third conductive terminals are defined as third

conductive terminals

13 and 13K in the embodiments below. Only one of the first conductive terminal and the second conductive terminal is provided with a pin end 14 extending out of the insulating base 3 from the corresponding connecting section to be electrically connected with an external circuit, so that the first conductive terminal and the second conductive terminal share the same pin end 14. The external circuit is a control circuit outside the motor base 100, and is used for transmitting an electrical signal to the metal circuit 1 in the motor base 100. In order to make the first and second conductive terminals share the pin terminal 14, the first and second conductive terminals each include a bridging portion extending from the connecting section, the bridging portion of the first conductive terminal is defined as a first bridging portion, and the bridging portion of the second conductive terminal is defined as a second bridging portion.

Because the third conductive terminal is arranged between the two conductive terminals, in order to facilitate the crossing and lapping of the two conductive terminals relative to the third conductive terminal, at least one conductive terminal of the two conductive terminals needs to be provided with a crossing structure crossing the third conductive terminal to realize overlapping and lapping with the other conductive terminal. In an embodiment of the present application, the first conductive terminal further includes a bridge portion connecting the first overlapping portion and the corresponding connecting section, and the bridge portion is disposed on a crossing structure of the first conductive terminal, which crosses the third conductive terminal. The bridging parts cross the third conductive terminals from the corresponding connecting sections so that the first lap joint part and the second lap joint part are overlapped and fixedly connected. A position where the second lap joint portion overlaps with the first lap joint portion is defined as an overlap region R. The insulating base 3 is injection molded and coated and fixed outside the two conductive terminals, and the overlap joint region R is exposed to the plastic block 4 of the insulating base 3.

In the following embodiments one to eleventh of the present application, the first land portions belonging to different first conductive terminals 11, 11a,11b,11c,11d,11f,11g,11h,11i, 111j, 111k are the first land portions 110,110a,110b,110c,110d,110f,110g,110h,110i,110j,110k, respectively, and the second land portions belonging to different second conductive terminals 12, 12a,12b,12c,12d,12f, 21g, 12h,12i,12j,12k are the second land portions 120, 120a,120b,120c,120d/120f,120g/120h,120i,120j,120k, and the connecting portions belonging to different first conductive terminals 11, 111111b, 11111d, 110h, 12k, respectively, are the second land portions 120, 120a,120b,120c,120d/120f,120g/120h, 120j 120k, 12018K, respectively.

The secondary injection moulding of plastic body 31 in metal circuit 1 with plastic piece 4, a plurality of plastic pieces 4 are located the perpendicular to the different planes of plastic body 31, electronic component 2 is located respectively and exposes in different planes plastic piece 4, and then conductive terminal's leg end 15 all welds electronic component 2 also all need be located and expose in different planes plastic piece 4. The solder foot end 15, the first lap joint part and the second lap joint part are exposed on the same surface of the corresponding plastic block 4. In the embodiment of the present application, the plastic block 4 includes a first retaining wall 41 perpendicular to the bottom surface of the plastic body 31, a second retaining wall 42 perpendicular to the bottom surface of the plastic body 31 and adjacent to the first retaining wall 41, and a third retaining wall 43 parallel to the first retaining wall 41 and parallel to the bottom surface of the plastic body 31. The plane of the first retaining wall 41 is a first plane P1, the plane of the second retaining wall 42 is a second plane P2, the plane of the third retaining wall 43 is a third plane P3, and the plane of the bottom surface of the plastic body 31 is a fourth plane P4. First barricade 41 second barricade 42 reaches all be provided with coil 5 on the third barricade 43, wherein first barricade 41 with install two on the second barricade 42 coil 5 for prevent the shake when making a video recording, install one on the third barricade 43 coil 5 is used for the drive zooms. One of the electronic components 2 is soldered to the soldering terminal 15 of the first conductive terminal held by the first retaining wall 41, and the other of the electronic components 2 is soldered to the soldering terminal 15 of the second conductive terminal held by the second retaining wall 42. Of course, in other embodiments, the electronic component 2 is soldered to the solder pin terminal 15 of the second conductive terminal held by the third partition wall 43, and it is only necessary that the second overlapping portion of the second conductive terminal overlaps with the first overlapping portion across three directions. In the invention, the connecting section 17 of the second conductive terminal extends from the corresponding solder pin end 15 and continuously spans at least three planes, and the connecting section 17 spans from a vertical plane where the solder pin end of the second conductive terminal is located to a horizontal plane where the bottom surface of the plastic body is located, and then spans to a vertical plane where the solder pin end of the first conductive terminal is located. Specifically, the connecting section 17 of the second conductive terminal spans from the second plane P2 to the fourth plane P4, and then spans to the first plane P1, thereby completing the overlapping of the two conductive terminals. Since the second bridging portion needs to span to the fourth plane P4, the second conductive terminal is further provided with a spanning section 16 fixed to the insulating base 3, so as to strengthen the strength of the motor base 100 while achieving the spanning.

In an embodiment of the present application, the first conductive terminal and the second conductive terminal may be made of the same material or different materials. In this embodiment, the first conductive terminal is made of copper, and the second conductive terminal is made of stainless steel. In the embodiment of the present application, the thicknesses of the first conductive terminal and the second conductive terminal may also be different, for example, the thickness of the first conductive terminal is designed to be greater than that of the second conductive terminal, so that the overall thickness of the first conductive terminal and the second conductive terminal after overlapping can be reduced, and further, the injection molding thickness of the subsequent insulating base 3 can be reduced. In the embodiment of the application, the thickness of the first conductive terminal made of copper is 0.08 mm, and the thickness of the second conductive terminal made of stainless steel is 0.05 mm.

In this embodiment, after the first and second conductive terminals are overlapped and overlapped, a positioning fixture is used to relatively position the overlapped and overlapped region R of the first and second conductive terminals, and the plastic block 4 is injection-molded once to relatively position the two conductive terminals. Injection moulding remove the thimble tool behind the plastic block 4, plastic block 4 corresponds overlap the regional R of overlap joint forms shrinkage pool S, the first overlap joint portion of first conductive terminal and the second overlap joint portion of second conductive terminal overlap the regional R of overlap joint in the offside of shrinkage pool S exposes plastic block 4. The plastic block 4 is disposed on the opposite side of the concave hole S to provide a carrying groove 410 for carrying the electronic component 2, the carrying groove 410 is further provided with a concave groove 4101 in a concave manner, and the top surface of the solder terminal 15 of the conductive terminal is exposed on the bottom surface of the concave groove 4101, so as to be disposed in the carrying groove 410 for electrically welding the electronic component 2 and the solder terminal 15. After the first overlapping part and the second overlapping part are overlapped, the thickness of the overlapping area R is larger than that of the welding foot end 15, so that the top surface of the overlapping part is higher than that of the welding foot end 15, in order to facilitate the plastic block 4 to cover part of the overlapping area R and expose the electric connection area of the first overlapping area and the second overlapping area, the bearing groove 410 is provided with a step part 411 protruding out of the bottom wall of the bearing groove 410, and the step part 411 corresponds to the overlapping area R to cover the first overlapping part and the second overlapping part.

In the present application, although the two conductive terminals are overlapped together by bending the crossover wire, in order to further enhance the fixing and electrical connection performance, the overlapping region R of the two conductive terminals needs to be further electrically connected. The following describes how to perform a further electrical connection process of two conductive terminals in detail through descriptions of first to eleventh embodiments of the present application.

Referring to fig. 1 to 27, after the two conductive terminals are folded and overlapped, the two conductive terminals are then subjected to subsequent fixed connection and electrical connection processing, and the specific fixed connection and electrical connection processing mode may be solder dispensing and reflow furnace welding (also called SMT welding), resistance welding, laser welding, or other processing modes. In addition to the above-described welding process, some mechanical fixing processes such as riveting and stamping may be used to fix and electrically connect the two components.

In the first to sixth embodiments of the present application, a soldering, i.e., a Surface Mount Technology (SMT) welding technology is specifically selected to achieve the fixed connection and the electrical connection between the two conductive terminals. Specifically, the solder paste 6 is dispensed in the overlap region R of the two conductive terminals for positioning, and in order to facilitate sufficient contact and coverage of the solder paste 6 with the soldering region, at least one of the first overlap portion or the second overlap portion is provided with an opening for accommodating the solder paste 6 in the overlap region R. After the plastic block 4 is injection molded, the first conductive terminal and the second conductive terminal are soldered with the solder 6 in the overlap region R and then are welded in a reflow furnace, and then the plastic body 31 is injection molded again. It can be understood that, in the process of the soldering process, in order to avoid the problem of poor tin-plating or poor contact after soldering, the surfaces of the overlap joint regions R of the first conductive terminal and the second conductive terminal are plated with gold to form gold-plated regions (not numbered), and then the outside of the gold-plated regions are plated with tin by the soldering process to achieve soldering fixation. The gold-plated area can isolate the copper metal of the conductive terminal from air, and prevent the conductive terminal from being oxidized. The gold-plating region specifically covers an upper surface and a lower surface of the first conductive terminal in the overlap region R, an inner wall of the opening, and an upper wall of the second conductive terminal disposed relatively close to the lower surface of the first conductive terminal. Since gold has better wettability and ductility than other metals, when the tin 6 is spotted in the openings, the tin 6 is more easily adsorbed in the gold plated areas. In the embodiments of the present application, the specific embodiments of implementing the soldering and fixing between the two conductive terminals by using the Surface Mount Technology (SMT) include 6 types, which are the first to sixth embodiments, respectively.

In a first embodiment of the present application, referring to fig. 1 to 10, the first bridging portion 110 of the first conductive terminal 11 has the opening defined as the holding through hole 111 in the overlapping region R. The inner wall defines a first inner wall 1113 of the holding through hole 111. The holding through hole 111 is provided with an open end 1111 far away from the second conductive terminal 12, an abutting end 1112 close to the second conductive terminal 12, and the first inner wall 1113. And the first lap joint portion 110 is provided with the upper surface 112 and the lower surface 113 in the lap joint region R. And the second bridging portion 120 of the second conductive terminal 12 has an upper wall 121 disposed opposite to the lower surface 113. The gold-plating area is disposed on the upper surface 112, the lower surface 113, the first inner wall 1113 and the upper wall 121, so that the solder 6 can more easily contact with the through hole 111, and stable soldering between the two conductive terminals is achieved. Meanwhile, in the first embodiment of the present application, the size of the open end 1111 of the holding through hole 111 is designed to be smaller than the size of the abutting end 1112, and in the process of dispensing solder 6, the solder 6 is less likely to fall from the holding through hole 111, so that the welding effect between two conductive terminals is ensured, and the electrical connection performance is enhanced.

In a second embodiment of the present application, referring to fig. 11, the first bridging portion 110B of the first conductive terminal 11B and the second bridging portion 120B of the second conductive terminal 12B are provided with the openings in the overlapping region R, the opening of the first bridging portion 110B is defined as the holding through hole 111B, and the inner wall is defined as a first inner wall 1113B disposed in the holding through hole 111B. The holding through hole 111B is provided with an open end 1111B far away from the second conductive terminal 12B, an abutting end 1112B close to the second conductive terminal 12B, and the first inner wall 1113B. In the second embodiment, the size of the open end 1111B is designed to be larger than the size of the abutting end 1112B. The opening of the second bridging portion 120B is defined as a receiving hole 121B communicating with the holding through-hole 111B. The inner wall of the second bridging portion 120B defines a second inner wall 122B provided for the accommodation hole 121B. The receiving hole 121B is larger than the abutting end 1112B. With such an arrangement, the solder material 6 can enter the holding through hole 111B more easily and can be accommodated in the holding through hole 111B and the accommodating hole 121B. The gold-plated area is disposed on the upper surface 112B, the lower surface 113B, the first inner wall 1113B, the second inner wall 122B and the upper wall 123B of the first conductive terminal 11B, so that the solder 6 can more easily contact the holding through hole 111B and the receiving hole 121B, and the soldering between the overlapping portions of the two conductive terminals can be better achieved. Because the second overlapping part 120B of the second conductive terminal 12B is recessed downward to form the accommodating hole 121B, the solder material 6 can enter the accommodating hole 121B after passing through the holding through hole 111B, the capability of accommodating the solder material 6 can be further improved on the basis of the capacity of the holding through hole 111B, and the solder material 6 can be clamped in the accommodating hole 121B and is not easy to fall off because the size of the accommodating hole 121B is larger than that of the abutting end 1112B.

In a third embodiment of the present application, referring to fig. 10, the first overlapping portion 110C of the first conductive terminal 11C is provided with the opening in the overlapping region R. The opening is defined as a holding through hole 111C. The inner wall defines a first inner wall 1113C of the holding through hole 111C. The holding through hole 111C is provided with an open end 1111C far away from the second conductive terminal 12C and an abutting end 1112C near the second conductive terminal 12C, and in the third embodiment, the size of the open end 1111C is designed to be smaller than the size of the abutting end 1112C. A convex protrusion 1211C is disposed in the second bridging portion 120C of the second conductive terminal 12C from the upper wall 121C to the holding through hole 111C, and the solder 6 is accommodated in the holding through hole 111C and distributed around the convex protrusion 1211C. The convex protrusion 1211C is disposed on the second overlapping portion 120C, so that the first conductive terminal 11C and the second conductive terminal 12C can be initially positioned, the positioning effect in the manufacturing process is optimized, and the welding and fixing effect is enhanced, and when soldering, the contact area between the solder material 6 and the first overlapping portion 110C and the second overlapping portion 120C can be further increased, so that the contact area is larger, and the contact is more sufficient. The gold-plated region is disposed on the upper surface 112C, the lower surface 113C, the first inner wall 1113C, the peripheral region of the convex protrusion 1211C and the upper wall 121C of the first conductive terminal 11C, so that the solder 6 can more easily contact the through hole 111C, and the solder between the overlapping portions of the two conductive terminals can be achieved.

In a fourth embodiment of the present application, referring to fig. 13, the openings are formed in the overlapping region R of the first bridging portion 110D of the first conductive terminal 11D and the second bridging portion 120D of the second conductive terminal 12D, and the opening of the first bridging portion 110D is defined as a holding through hole 111D. The inner wall defines a first inner wall 1113D of the holding through hole 111D. The holding through hole 111D is provided with an open end 1111D far away from the second conductive terminal 12D, an abutting end 1112D close to the second conductive terminal 12D, and the first inner wall 1113D. In the fourth embodiment, the size of the open end 1111D is designed to be larger than the size of the abutting end 1112D to facilitate the entry of the solder 6. The opening of the second strap 120D is defined as a receiving hole 122D which is offset from and partially communicated with the holding through hole 111D. The inner wall of the receiving hole 122D is defined as a second inner wall 1221D. The size of the side of the accommodating hole 122D close to the first bridge portion 110D is smaller than the size of the side of the accommodating hole 122D far from the first bridge portion 110D, that is, the accommodating hole 122D is tapered in the direction close to the first bridge portion 110D, and the solder material 6 enters through the holding through hole 111D and is accommodated in the holding through hole 111D and the accommodating hole 122D. By controlling the amount of the solder 6, even if there is a communication portion between the first conductive terminal 11D and the second conductive terminal 12D, the solder 6 does not drip out of the receiving hole 122D. The gold-plating area is disposed on the upper surface 112D, the lower surface 113D, the first inner wall 1113D, the second inner wall 1221D, and the upper wall 121D of the first conductive terminal 11D, so that the solder 6 can more easily contact the holding through hole 111D and the receiving hole 122D, and the soldering between the overlapping portions of the two conductive terminals is realized.

In a fifth embodiment of the present application, referring to fig. 14, the opening is formed in the overlap region R of the first bridging portion 110H of the first conductive terminal 11H, the opening is defined as a holding through hole 111H, and the inner wall is defined as a first inner wall 1113H of the holding through hole 111H. The holding through hole 111H is provided with an open end 1111H far away from the second conductive terminal 12H, an abutting end 1112H close to the second conductive terminal 12H, and the first inner wall 1113H. In the fifth embodiment, the size of the open end 1111H is designed to be larger than the size of the abutting end 1112H to facilitate the entry of the solder 6. The lower surface 113H and the upper wall 121H of the overlap region R of the first conductive terminal 11H and the second conductive terminal 12H are both provided with a wavy concave-convex structure 13H, the extending directions of the concave-convex structure 13H of the lower surface 113H and the concave-convex structure 13H of the upper wall 121H are different, and the solder material 6 enters from the holding through hole 111H and is contained in the concave-convex structure 13H between the holding through hole 111H and the lower surface 113H and the upper wall 121H. Because the wavy concave-convex structures 13H which are embedded in the lower surface 113H and the upper wall 121H in a staggered mode are arranged, a point-to-point contact mode is formed, the positioning contact between the wavy concave-convex structures 13H and the point-to-point contact mode is more reliable, a certain gap is formed between the wavy concave-convex structures 13H, and tin can be fully climbed when the tin material 6 is subjected to spot welding more conveniently. The gold-plating region is disposed on the upper surface 112H, the lower surface 113H, the first inner wall 1113H and the upper wall 121H of the first conductive terminal 11H, so that the solder 6 can more easily contact the holding through hole 111H sufficiently, and the soldering between the overlapping portions of the two conductive terminals is realized.

In a sixth embodiment of the present application, referring to fig. 15 to 16, an area of the first lap 110I of the first conductive terminal 11I is smaller than an area of the second lap 120I of the second conductive terminal 12I. The first lap joint portion 110I has a ring-shaped structure 111I, the ring-shaped structure 111I is hollow to form the opening, the opening of the ring-shaped structure 111I is defined as a holding through hole 1110I, and the inner wall is defined as a first inner wall 1111I provided by the holding through hole 1110I. The outer wall of the annular structure 111I defines an outer wall surface 1112I. The second overlapping portion 120I is disposed on one side of the annular structure 111I, and the solder material 6 is wrapped around the annular structure 111I along the second overlapping portion 120I and is fully contained in the outer wall 1112I of the annular structure 111I and the holding through hole 1110I, so that the solder material 6 is fully contacted with the two conductive terminals, and the welding effect is ensured. The gold plating region is disposed on the upper surface 112I, the lower surface 113I, the outer wall surface 1112I, the first inner wall 1111I and the upper wall 121I of the first conductive terminal 11I in the overlap joint region R, so that the solder 6 can more easily contact the annular structure 111I and the upper wall 121I of the second overlap joint part 120I, and the first overlap joint part 110I and the second overlap joint part 120I of the two conductive terminals can be welded.

In the first to sixth embodiments of the present invention, the electronic component 2 and the bonding pad terminal 15 are bonded by Surface Mount Technology (SMT). Since the metal circuit 1 and the electronic component 2 need to be soldered by one SMT soldering process, in the first to sixth embodiments of the present application, the solder material 6 and the predetermined positioning action are first applied in the openings of the first conductive terminal and/or the second conductive terminal, and then the electronic component 2 is soldered and fixed together by the soldering process, so that there is no need to additionally add an independent soldering process to the first conductive terminal and the second conductive terminal.

In another embodiment of the present application, in order to realize the fixing and electrical connection process of the bonding portion of the two conductive terminals in the overlap region R, in addition to the above-mentioned processing method of performing SMT soldering by the solder material 6, the two conductive terminals may be mechanically fixed and electrically conducted simultaneously by a mechanical fixing method. In a seventh embodiment of the present application, referring to fig. 17 to 18, the first bridging portion 110F of the first conductive terminal 11F and the second bridging portion 120F of the second conductive terminal 12F are fixedly connected to each other in the overlapping region R by mechanical riveting, and more particularly, by cold heading riveting. The first lap joint portion 110F is provided with a protruding portion 111F protruding downward by means of cold heading, and the second lap joint portion 120F is provided with an accommodating hole 122F accommodating the protruding portion 111F in the overlapping area R. In the seventh embodiment of the present application, compared to the welding method of the first to sixth embodiments of the present application, the caulking method requires an additional caulking step. But the riveting fixing mode can realize the fixed connection and the electric connection between the two at one time. In other embodiments, the mechanical fixing manner may specifically adopt a mechanical fixing manner such as crimping fixing, clamping fixing, and the like, so as to achieve electrical connection while achieving fixed connection.

In another embodiment of the present application, in order to fix and electrically connect the overlapping portions of the two conductive terminals in the overlapping region R, other welding processes may be used in addition to the fixing means by soldering and fixing the conductive terminals with the solder 6 by SMT. In an eighth embodiment of the present application, referring to fig. 19 to 21, the first bridging portion 110A of the first conductive terminal 11A is overlapped and overlapped with the second bridging portion 120A of the second conductive terminal 12A in the overlapping and overlapping region R in parallel. Specifically, the overlapping areas R of the two conductive terminals are further connected and fixed to each other by resistance welding or laser welding. Since resistance welding cannot utilize a welding process in which the resistance welding passes through a reflow furnace, a welding method of resistance welding or laser welding requires a specific welding process in addition to the welding method of the first to sixth embodiments of the present application. However, in view of some common motor bases, for example, motor bases without other electronic components to be welded, because there is no need to position the welding leg end welded to the electronic component in advance, the injection molding of the plastic base 3 can be completed first by welding and then by injection molding, and compared with the case where the plastic block 4 and the plastic body 31 are required to be injection molded in several times, the injection molding process can be saved.

In another embodiment of the present application, in order to fix and electrically connect the overlapping portions of the two conductive terminals in the overlapping area R, the overlapping portions may be formed by a press-welding process. In a ninth embodiment of the present application, referring to fig. 22 to 23, the first overlapping portion 110G of the first conductive terminal 11G is stamped into the accommodating hole 122G of the second overlapping portion 120G of the second conductive terminal 12G in the overlapping region R, and then is further welded and fixed. In the stamping process, the bridge portion of the first conductive terminal 11G has a bent portion 111G, so that the first bridging portion 110G and the second bridging portion 120G are located on the same plane. When the first overlapping part 110G is punched and positioned in the accommodating hole 122G of the second overlapping part 120G, the first overlapping part 110G is directly in tension and fixed contact with the second overlapping part 120G after being deformed and expanded, and then is welded and fixed, so that the direct contact between the first overlapping part and the second overlapping part can be enhanced, and the electrical connection performance is enhanced. Be equipped with a pair of joint piece 1101G of relative setting on the first overlap joint portion 110G, it is relative on the second overlap joint portion 120G joint piece 1101G is provided with a pair of breach 1221G of stepping down. The clamping block 1101G is matched with the abdicating notch 1221G, and after the first overlapping part 110G deforms and expands, the first overlapping part 110G is difficult to separate from the accommodating hole 122G formed in the second overlapping part 120G. In other embodiments, after the second strap portion 120G is folded and overlapped with the first strap portion 110G, in order to further enhance the electrical connection performance between the two, other corresponding changes may be made on the structures of the first strap portion 110G and the second strap portion 120G to enhance the connection fixation between the two.

In a tenth embodiment of the present application, referring to fig. 24 to 25, the first lap portion 110J of the first conductive terminal 11J wraps the second lap portion 120J of the second conductive terminal 12J in the overlap area R by means of cold heading riveting, so that the first and second conductive terminals are mechanically fixed and electrically connected. Specifically, the first overlapping part 110J includes a main body 111J disposed parallel to the second overlapping part 120J, and a first bending section 112J and a second bending section 113J formed by bending and wrapping the main body 111J and the second overlapping part 120J from two sides. The main body 111J, the first bent section 112J, and the second bent section 113J wrap and fix the second overlapping section 120J, and then connect and fix the two by means of cold heading.

In an embodiment of the present application, the bridging portion integrally bends and extends from the connecting section of the first conductive terminal or is disposed separately from the connecting section. In the above embodiments of the present application, that is, in the first to tenth embodiments, the bridging portion integrally bends and extends from the connecting section of the first conductive terminal; in an eleventh embodiment of the present application, the bridging portion 18K and the connecting section 17K of the first conductive terminal 11K are separately disposed, and the bridging portion and the connecting section are fixed and electrically connected to each other in an overlapping manner. The bridging part 18K and the connecting section 17K of the first conductive terminal 11K are arranged in a split manner, so that on one hand, the bending of the conductive terminal can be further reduced, the space crossing of the first conductive terminal 11K relative to the third conductive terminal 13K is convenient to realize, and the path of the first conductive terminal 11K is reduced as much as possible; on the other hand, since the bridging portion 18K may be regarded as an additional metal material segment relative to the first conductive terminal 11K, a material and a material thickness different from those of the first conductive terminal 11K and the second conductive terminal 12K may be selected, so that the resistivity of the conductive path may be adjusted, and the welding manner between the first conductive terminal 11K and the second conductive terminal 12K may be more flexibly controlled, thereby further enhancing the electrical connection effect between the two conductive terminals.

Referring to fig. 26 to 27, the first bridging portion 110K and the second bridging portion 120K of the second conductive terminal 12K are electrically connected by a bridge portion 18K. The bridge portion 18K overlaps the first overlapping portion 110K with the second overlapping portion 120K by crossing the third conductive terminal 13K. The connecting section 17K of the first conductive terminal 11K is further provided with a third overlapping portion 171K, the bridge portion 18K is further provided with a fourth overlapping portion 181K, and the first overlapping portion 110K and the fourth overlapping portion 181K of the first conductive terminal 11K are respectively located at two ends of the bridge portion 18K. The third connecting portion 171K and the fourth connecting portion 181K are overlapped, fixed and electrically connected. In this embodiment, the thickness of the bridge portion 18K is smaller than the thickness of the connecting section 17K of the first conductive terminal 11K and the thickness of the second conductive terminal 12K, so that the subsequent injection thickness of the plastic block 4 can be reduced while the electrical connection is realized. Due to the arrangement of the bridging portion 18K, the bending of the second conductive terminal 12K is reduced, and the overlapping fixing point is increased to reduce the path of the conductive terminal. The bridge part 18K is not overlapped with the first conductive terminal 11K and the second conductive terminal 12K, and at least one side surface facing the third conductive terminal 13K is provided with an insulating coating (not marked) so that the bridge part 18K is directly attached to the third conductive terminal 13K, the short circuit phenomenon is prevented, and the injection molding thickness of the subsequent plastic block 4 can be further reduced. And the plastic block 4 is injected outside the metal circuit 1, the bridge part 18K and the first conductive terminal 11K are overlapped and lapped (the fourth lap part 181K) and the second conductive terminal 12K are overlapped and lapped (the first lap part 110K) to be exposed in the plastic block 4, and the bridge part 18K is not covered on the plastic block 4 with the first conductive terminal 11K and the second conductive terminal 12K. In addition, since the bridge portion 18K is separate from the first conductive terminal 11K, the material of the bridge portion 18K may be changed. If the resistance caused by the first conductive terminal 11K is large when it crosses the line, the impedance of the whole metal circuit 1 can be adjusted by changing the material of the bridging portion 18K. It can be understood that, in the present embodiment, the fixed connection and the electrical connection between the bridge portion 18K and the first and second

conductive terminals

11K and 12K may be any one of the above first to tenth embodiments.

The invention also relates to a manufacturing method for manufacturing the motor base 100, which specifically comprises the following steps:

the method comprises the steps that firstly, a metal circuit 1 with a plurality of conductive terminals is provided, wherein the conductive terminals comprise a first conductive terminal, a second conductive terminal and a third conductive terminal positioned between the first conductive terminal and the second conductive terminal, each conductive terminal comprises a welding foot end 15 and a connecting section extending from the welding foot end, the first conductive terminal comprises a bridging part connected with the connecting section and a first lapping part extending from the bridging part, the second conductive terminal comprises a second lapping part extending from the corresponding connecting section, and the bridging part crosses the third conductive terminal from the corresponding connecting section of the first conductive terminal so that the first lapping part is overlapped with the second lapping part;

secondly, a plurality of plastic blocks 4 for fixing the metal circuit 1 are formed by one-step injection molding, and the welding foot ends 15 and the lap joint parts are exposed on the plastic blocks 4; after the first conductive terminal and the second conductive terminal are overlapped and arranged, a thimble jig is specifically used for butting and positioning the first conductive terminal and the second conductive terminal so as to facilitate one-time injection molding of the plastic block 4 at the periphery of the overlapping part;

thirdly, positioning a plurality of electronic elements 2 on the corresponding plastic blocks 4 and welding the electronic elements with the corresponding welding foot ends 15;

fourthly, defining an overlapping area where the second lap joint part and the first lap joint part are overlapped as an overlapping area, and fixedly connecting the first lap joint part and the second lap joint part in the overlapping area, wherein the fixedly connecting treatment mode is any one of surface mounting welding, riveting, laser welding or resistance welding;

fifthly, the plastic body 31 is injection molded twice outside the metal circuit 1 and the plastic block 4 to form the insulating base 3, thereby forming the motor base 100.

Wherein, as in the fourth step, the first lap joint part and the second lap joint part are subjected to surface mount welding treatment, the first lap joint part and the second lap joint part are subjected to spot welding of tin materials 6 in the overlapping and overlapping area R, and are welded in a reflow furnace.

When the two conductive terminals are fixedly connected by a surface mounting welding mode, at least one of the first lap joint part and the second lap joint part is provided with an opening for accommodating the tin material 6 in the overlap joint area R.

When the two conductive terminals are fixedly connected in a laser welding or resistance welding mode, the first lap joint part and the second lap joint part are arranged in the overlapping and lap joint area in a parallel overlapping mode, so that the first lap joint part and the second lap joint part can be conveniently subjected to laser welding or resistance welding.

When two conductive terminals select to be fixedly connected in a riveting mode, the first lap joint part and the second lap joint part are riveted and fixed in the overlapping lap joint area, specifically, the first lap joint part is provided with a convex part 111F in a downward protruding mode in a cold heading mode, and the second lap joint part is provided with a containing hole 122F for containing the convex part in the overlapping lap joint area.

When the two conductive terminals are fixedly connected in a riveting mode, the first lap joint part wraps the second lap joint part in the overlapping area through riveting, and the cold heading riveting mode is specifically adopted for realizing.

While the overlapping portions of the two conductive terminals are fixedly connected by welding, laser welding or resistance welding, the first conductive terminal 11K may be further provided with a bridging portion 18K in a split manner, specifically, the bridging portion 18K is separately provided from the connecting section 17K of the first conductive terminal 11K. At this time, the connecting section 17K of the first conductive terminal 11K is further provided with a third overlapping portion 171K, and both ends of the bridge portion 18K are respectively provided with a first overlapping portion 110K and a fourth overlapping portion 181K. The fourth overlapping portion 181K of the bridge portion 18K overlaps, is fixed to, and is connected to the third overlapping portion 171K of the first conductive terminal 11K, and the first overlapping portion 110K of the bridge portion 18K overlaps, is fixed to, and is connected to the second overlapping portion 120K of the second conductive terminal 12K, thereby achieving indirect electrical connection between the first conductive terminal 11K and the second conductive terminal 12K. The fixing and electrical connection between the bridge portion 18K and the second and third overlapping

portions

120K and 171K may be performed by soldering, resistance welding, laser welding or riveting, which will not be described herein again.

In the invention, the bridging part of the first conductive terminal in the motor base 100 crosses the third conductive terminal from the connecting section corresponding to the first conductive terminal so as to overlap and fixedly connect the first overlapping part and the second overlapping part, thereby avoiding the conductive terminal from being incapable of being formed due to excessive bending times of a single conductive terminal, improving the forming yield of the conductive terminal, saving the wiring space of the conductive terminal, and leading the contact area between the two conductive terminals to be larger and the electrical connection performance to be excellent due to the overlapping and lapping of the two conductive terminals.

In the first to sixth embodiments of the present invention, after the first and second bridging portions of the first and second conductive terminals are relatively positioned, the soldering process of the electronic component 2 is used to complete the relative electrical connection at the same time, thereby further reducing the soldering process and simplifying the manufacturing process.

In the first to sixth embodiments of the present invention, at least one of the first and second overlapping portions of the first and second conductive terminals is provided with an opening to promote sufficient contact between the solder 6 and the first and second overlapping portions, thereby enhancing the soldering effect. The parts of the first and second lap parts of the first and second conductive terminals, which are in contact with the tin solder 6, are provided with gold plating areas to further strengthen the full contact between the tin solder and the first and second lap parts and strengthen the welding effect.

In the invention, the plastic block 4 is provided with a step part 411 in the bearing groove 410 corresponding to the first and second lap parts of the first and second conductive terminals or the first and fourth lap parts corresponding to the bridge part 18K and the second and third lap parts of the second and first conductive terminals, the step part 411 covers the first and second lap parts or only exposes the welding area in the overlap area R to the plastic block 4 together with the outer edge area of the third and fourth lap parts, thereby strengthening the fixing effect of the first and fourth lap parts respectively lapping with the second and third lap parts.

In the present invention, the connecting section 17 of the second conductive terminal extends from the corresponding solder tail end 15 and continuously spans at least three planes, so that the strength of the motor base 100 can be enhanced while the positions of the corresponding pin end 14 and the solder tail end 15 of the conductive terminal span.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the embodiments of the present invention in nature.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. The utility model provides a motor base, includes insulator foot, locates insulator foot's metal circuit and welds in metal circuit's electronic component, metal circuit includes a plurality of conductive terminal, conductive terminal includes first conductive terminal, second conductive terminal and is located the third conductive terminal between first conductive terminal and the second conductive terminal, each conductive terminal is including welding electronic component's leg end reaches certainly the linkage segment that the leg end extends, its characterized in that: the first conductive terminal comprises a bridge part and a first lap joint part extending from the bridge part, the second conductive terminal comprises a second lap joint part extending from a corresponding connecting section, the bridge part of the first conductive terminal stretches across the third conductive terminal from the corresponding connecting section so that the first lap joint part and the second lap joint part are overlapped and fixedly connected, and the insulating base is injection-molded and at least coated and fixed outside the first conductive terminal and the second conductive terminal.

2. The motor mount of claim 1, wherein: the electronic components comprise at least two different electronic components, and the welding foot ends of the first conductive terminal and the second conductive terminal are respectively welded with the two different electronic components correspondingly; only one of the first conductive terminal and the second conductive terminal is provided with a pin end which extends out of the insulating base from the corresponding connecting section to be electrically connected with an external circuit, so that the first conductive terminal and the second conductive terminal share the same pin end.

3. The motor mount of claim 2, wherein: the utility model discloses a metal circuit, including insulator foot, welding foot end, first overlap joint portion and second overlap joint portion, insulator foot includes one shot injection moulding and cladding a plurality of plastic pieces of metal circuit, the welding foot end first overlap joint portion reaches second overlap joint portion exposes in corresponding the same surface of plastic piece, insulator foot still includes secondary injection moulding and cladding metal circuit and a plurality of the plastic body of plastic piece, a plurality of the vertical setting of plastic piece is located different vertical plane, and is different electronic component is located differently the plastic piece is exposed in corresponding the plastic piece.

4. A motor base as set forth in claim 3, wherein: the connecting section of the second conductive terminal extends from the corresponding welding foot end and continuously spans at least three planes, and the connecting section spans from the vertical plane where the corresponding welding foot end is located to the horizontal plane where the bottom surface of the plastic body is located and then spans to the vertical plane where the welding foot end of the first conductive terminal is located.

5. The motor mount of claim 4, wherein: the overlapping position of the second overlapping part and the first overlapping part is defined as an overlapping area, the second conductive terminal and the bridging part are fixedly connected in a soldering manner, and at least one of the first overlapping part and the second overlapping part is provided with an opening for containing solder in the overlapping area.

6. The motor mount of claim 5, wherein: the first conductive terminal and the second conductive terminal are subjected to surface gold plating in the overlap joint area to form a gold plating area, and the gold plating area covers the upper surface of the first conductive terminal corresponding to the overlap joint area, the lower surface opposite to the upper surface, the inner wall of the open hole and the upper wall of the second conductive terminal relatively close to the lower surface of the first conductive terminal.

7. The motor mount of claim 6, wherein: the first lap joint part is provided with the open hole in the lap joint area, the open hole is defined as a holding through hole, the holding through hole is provided with an open end far away from the second conductive terminal and an attaching end close to the second conductive terminal, the size of the open end is smaller than that of the attaching end, and the tin material is contained in the holding through hole.

8. The motor mount of claim 7, wherein: the second lap joint part is provided with a convex hull protruding inwards from the upper wall to the fixing through hole, and the tin material is contained in the fixing through hole and is concentrated on the convex hull.

9. The motor base of claim 6, wherein: the first overlap joint portion in overlap the overlap joint region and set up the trompil, first overlap joint portion the trompil definition is the holding through-hole, the holding through-hole is equipped with and keeps away from the open end of second conductive terminal with be close to the end of pasting of second conductive terminal, the second connect the overlap joint portion in overlap the overlap joint region and set up the trompil, the second overlap joint portion the trompil definition is the accommodation hole, the accommodation hole of second overlap joint portion in overlap the overlap joint region in with the holding through-hole intercommunication, the tin material hold in the holding through-hole with in the accommodation hole.

10. The motor mount of claim 9, wherein: the size of the opening end is larger than that of the abutting end, and the size of the accommodating hole is larger than that of the abutting end.

11. The motor mount of claim 9, wherein: the size of open end is greater than the size of sticking to the end, the holding through-hole with the accommodation hole dislocation set and intercommunication each other, the accommodation hole is close to the size of one side of first overlap joint portion is less than the accommodation hole is kept away from the size of one side of first overlap joint portion, the tin material hold in the holding through-hole with the accommodation hole.

12. The motor mount of claim 6, wherein: the lower surface and the upper wall of the first conductive terminal and the second conductive terminal in the overlapping area are both provided with wavy concave-convex structures, the extending directions of the concave-convex structures of the lower surface and the upper wall are different, and the tin material is contained in the concave-convex structures between the opening and the lower surface and the upper wall.

13. The motor mount of claim 6, wherein: the area of the first lap joint part is smaller than that of the second lap joint part, the first lap joint part is provided with an annular structure, the annular structure is arranged in a hollow mode to form the opening, the opening of the annular structure is defined as a fixing through hole, the inner wall is defined as a first inner wall arranged on the fixing through hole, the outer wall of the annular structure is arranged to be an outer wall surface, and the tin material is at least contained in the opening along the second lap joint part.

14. The motor mount of claim 5, wherein: the second overlapping portion is provided with the opening, the opening is defined as a containing hole, the first overlapping portion is punched in the overlapping area to the containing hole of the second overlapping portion, and the first overlapping portion is welded and fixed to the second overlapping portion.

15. The motor mount of claim 1, wherein: the second overlap joint portion with the position definition that first overlap joint portion overlap joint is overlapping area, first overlap joint portion with the second overlap joint portion in overlapping area riveting fixed, first overlap joint portion is equipped with the bellying to the downward protruding, the second overlap joint portion in overlapping area is equipped with accepts the accommodation hole of bellying.

16. The motor mount of claim 1, wherein: the second overlap joint portion with the position that first overlap joint portion overlaps the overlap joint is defined as overlapping the overlap joint region, first overlap joint portion in overlapping the overlap joint region with the parallel overlapping arrangement of second overlap joint portion, first overlap joint portion and second overlap joint portion are connected fixedly through resistance welding or laser welding or riveted mode.

17. The motor mount of claim 1, wherein: the overlapping position of the second overlapping part and the first overlapping part is defined as an overlapping area, the first overlapping part wraps the second overlapping part in the overlapping area, and the first overlapping part is in contact connection with the second overlapping part.

18. The motor base of claim 1, wherein: the bridging part is integrally bent and extended from the connecting section of the first conductive terminal; or the bridging part and the connecting section are separately arranged, the connecting section of the first conductive terminal is also provided with a third overlapping part, the bridging part is also provided with a fourth overlapping part, and the third overlapping part and the fourth overlapping part are overlapped and fixedly connected.

19. A motor base as set forth in claim 18, wherein: the thickness of the bridging part is smaller than the thickness of the connecting section of the first conductive terminal and the thickness of the second conductive terminal.

20. A motor base as set forth in claim 18, wherein: and the bridge part is not overlapped with the first conductive terminal and the second conductive terminal, and at least one side surface facing the third conductive terminal is provided with an insulating coating so that the bridge part is directly attached to the third conductive terminal.

21. The motor mount of claim 20, wherein: and a plastic block is injected outside the metal circuit, the parts of the bridging part, the first conductive terminal and the second conductive terminal, which are overlapped, are exposed in the plastic block, and the parts of the bridging part, which are not overlapped with the first conductive terminal and the second conductive terminal, are covered in the plastic block.

22. A method for manufacturing a motor base is characterized by comprising the following steps:

and fourthly, injection molding the insulating base on the metal circuit.

23. The method of manufacturing a motor base as claimed in claim 22, wherein: before the second step, a thimble jig is provided to butt and position the overlapped and overlapped area of the first conductive terminal and the second conductive terminal, a plastic block is injection molded at the metal circuit at one time, and the welding foot end, the first overlapping part and the second overlapping part are exposed on the same surface of the corresponding plastic block.

24. The method of manufacturing a motor base as claimed in claim 23, wherein: and the fixed connection adopts a tin welding mode, before the second step, the first lap joint part and the second lap joint part are subjected to tin material dotting in the overlapping area, and then the first lap joint part and the second lap joint part are welded in a reflow furnace to complete the fixed connection.

25. The method of manufacturing a motor base as claimed in claim 24, wherein: at least one of the first lap joint part and the second lap joint part is provided with an opening for containing tin material in the overlapping and lap joint area.

26. The method of manufacturing a motor base as claimed in claim 22, wherein: the bridging part is bent and extended integrally from the connecting section of the first conductive terminal; or the bridging part and the connecting section are separately arranged, the connecting section of the first conductive terminal is also provided with a third overlapping part, the bridging part is also provided with a fourth overlapping part, and in the second step, the first overlapping part and the fourth overlapping part are respectively and correspondingly overlapped with the second overlapping part and the third overlapping part and are fixedly connected.

27. The method of manufacturing a motor base as claimed in claim 22, wherein: the first lap joint part and the second lap joint part are overlapped and lapped in parallel, the fixed connection adopts a laser welding mode, and the first lap joint part and the second lap joint part are subjected to laser welding.

28. The manufacturing method of a motor base as claimed in claim 22, wherein: the fixed connection adopts the riveting connection mode, the first lap joint portion in overlap joint region is equipped with the bellying downwards protruding, the second lap joint portion in overlap joint region is equipped with and accepts the accommodation hole of bellying.

29. The method of manufacturing a motor base as claimed in claim 22, wherein: the fixed connection adopts a riveting connection mode, and the first lap joint part wraps the second lap joint part in the overlapping area and is fixedly connected with the second lap joint part.