CN107465006A - Bus-bar, connection component, connector and central electrical part holder - Google Patents

Abstract

The invention discloses a kind of bus-bar, connection component, connector and central electrical part holder.The bus-bar includes body, first connecting portion, buffer part and second connecting portion.The first connecting portion is set on the body, and the first connecting portion is used to be connected with welding circuit board.The buffer part is taken the shape of the letter U, and one end of the buffer part is set on the body.The second connecting portion is arranged on the other end of the buffer part, and the second connecting portion can be used for connecting joint outer part.Bus-bar of the present invention can more share external force by the buffer part of U-shaped, have higher shock-absorbing capacity, the attachment structure for avoiding internal stress caused by external force from directly impacting between first connecting portion and circuit board, performance is stably connected with so as to improve.

Description

Busbars, connection components, connectors and central electrical boxes

technical field

The invention relates to an electrical connection structure, in particular to a bus bar, a connection assembly, a connector and a central electrical box.

Background technique

The bus bar, the English name is busbar. The bus bar is used to connect with other devices, wires or connection terminals, and transmit large current. One end of the bus bar generally passes the welding current with the circuit board, and the current is shunted through different welding connection points. Therefore, the stability of the solder connection between the bus bar and the circuit board directly affects the electrical connection performance. When the busbar is subjected to a large external force, it is very easy to transfer the internal stress generated by the external force to the welding part, thereby reducing the stability of the welding, and even causing the welding structure to fall off and lose the connection performance.

Contents of the invention

One of the objectives of the present invention is to provide a bus bar, connection assembly, connector and central electrical box with strong impact resistance and stable connection in order to overcome the deficiencies in the prior art.

To achieve the above object, the present invention is achieved through the following technical solutions:

The invention provides a bus bar. The busbar includes:

Ontology;

a first connecting part, the first connecting part is arranged on the body, and the first connecting part is used for connecting a first external connecting part;

a buffer part, the buffer part is U-shaped, and one end of the buffer part is arranged on the body;

A second connecting part, the second connecting part is arranged on the other end of the buffer part, and the second connecting part can be used for connecting a second external connecting part.

Preferably, the first external connecting member may be a circuit board, and the first connecting part may be soldered to the circuit board. The second external connection member may be a connection terminal or a wire.

Preferably, the second connecting portion extends along a direction perpendicular to the height of the body.

Preferably, the depth direction of the U-shape of the buffer portion is opposite to the extension direction of the second connection portion.

Preferably, the buffer part includes a plurality of sub-buffer parts, each sub-buffer part is U-shaped, and a U-shaped through groove is provided between adjacent sub-buffer parts.

Preferably, all sub-buffers have the same size.

Preferably, all through-slots are of the same size.

Preferably, the bus bar further includes a lower extension and an upper extension;

The lower extension part is extended along the height direction of the body, and is connected between the body and one end of the buffer part;

The upper extension part extends along the height direction of the body, and is connected between the upper end of the buffer part and the second connection part.

Preferably, in a height direction along the body, the lower extension has a greater height than the upper extension.

Preferably, the first connection part includes a base and a column;

The base protrudes from the top of the body;

The column is arranged on the top of the body, protrudes from the base and extends along the height direction of the body, so as to pass through the through hole on the circuit board and extend from one side of the circuit board to the other side .

Preferably, the first connection part includes a base and a plurality of uprights;

The base protrudes from the top of the body;

The plurality of columns are respectively arranged on the top of the body, and protrude from the base to extend along the height direction of the body, so as to pass through the through holes on the circuit board and extend from one side of the circuit board to The other side.

Preferably, the bus bar is a metal stamped integral piece.

Preferably, a connecting through hole is formed through the second connecting portion along the height direction of the body, and the connecting through hole is used for accommodating a connecting piece.

The invention also provides a connection assembly. The connection assembly includes a circuit board and the busbar as described in any one of the foregoing; the first connection part is electrically connected to the circuit board.

Preferably, soldering through holes are provided on the circuit board;

The first connecting portion is a protruding column, and the first connecting portion extends from one side of the component surface of the circuit board to one side of the soldering surface of the circuit board through the soldering through hole, and The first connecting portion is soldered to the soldering surface of the circuit board.

Preferably, the present invention provides another welding connection method:

The circuit board is provided with a welding through hole; the circuit board has a welding surface and a component surface arranged opposite to each other;

The first connection part includes a base and at least one column;

The base protrudes from the top of the body;

The column is arranged on the top of the body, and protrudes from the base to extend along the height direction of the body, and the column passes through the soldering hole and extends from one side of the component surface of the circuit board to the side of the soldering face of the circuit board;

The column is welded to the welding surface of the circuit board.

The invention also provides a connector. The connector includes a connecting piece and the connecting assembly as described in any one of the foregoing; the connecting piece is configured to be connected to the second connecting portion of the bus bar.

Preferably, the second connecting portion is provided with a connecting through hole along the height direction of the body;

The connecting piece is inserted into the connecting through hole and is electrically connected with the second connecting portion.

Preferably, the connecting piece is a double-ended stud.

The invention also provides a central electrical box. The central electrical box includes a housing and a connector as described in any one of the foregoing;

The circuit board and the connector are fixed in the housing;

The first connecting portion and the second connecting portion on the bus bar are respectively fixedly connected to the circuit board and the connecting piece.

Preferably, the body is arranged vertically to the circuit board.

Preferably, the second connecting portion is arranged parallel to the circuit board.

Compared with the prior art, the bus bar of the present invention can share more external force through the U-shaped buffer part, has higher buffer performance, and avoids the internal stress generated by the external force from directly impacting the connection between the first connecting part and the circuit board. The connection structure improves the stable connection performance.

Preferably, the buffer part includes a plurality of sub-buffer parts and through grooves, which further enhance the elastic deformation capability, thereby enhancing the buffer performance. The first connecting part includes a base and a column, which not only avoids the contact between the main body and the circuit board but also enhances the welding connection performance.

Description of drawings

FIG. 1 is a structural schematic view of a busbar provided by the present invention at an angle.

FIG. 2 is a structural schematic view of another angle of the bus bar shown in FIG. 1 .

FIG. 3 is a front view of the bus bar shown in FIG. 1 .

Fig. 4 is a right side view of the bus bar shown in Fig. 1 .

Fig. 5 is a structural schematic diagram of a connection assembly provided by the present invention at an angle.

FIG. 6 is a structural schematic diagram of another angle of the connection assembly shown in FIG. 5 .

FIG. 7 is a structural schematic view of a connector provided by the present invention at an angle.

FIG. 8 is a structural schematic diagram of another angle of the connector shown in FIG. 7 .

FIG. 9 is a schematic diagram of the mating connection between the connector shown in FIG. 7 and the bus bar.

detailed description

The present invention is described in detail below in conjunction with accompanying drawing:

Embodiment one:

Please refer to FIG. 1 and FIG. 2 , which are a bus bar 101 provided by the present invention. The bus bar 101 includes a body 10 , a first connecting portion 20 , a buffer portion 30 and a second connecting portion 40 . The first connecting portion 20 is disposed on the body 10 for soldering connection with a circuit board 50 described below. One end of the buffer portion 30 is disposed on the body 10 . The second connection portion 40 is disposed on the other end of the buffer portion 30 for electrical connection with the outside.

The body 10 is used to support other parts of the bus bar 101 . The shape and structure of the body 10 only need to meet the connection requirements and installation requirements of the current conduction to be realized. In this embodiment, the body 10 is roughly shaped like a wall formed by connecting two L shapes end to end. The body 10 can be made of any conductive material. In this embodiment, the body 10 is stamped from a brass plate.

The first connecting portion 20 is disposed on the body 10 . In this embodiment, the first connecting portion 20 is disposed on the top of the body 10 . The first connecting part 20 is used for connecting external connecting parts. In this embodiment, the first connecting portion 20 is used for soldering connection with the circuit board 50 described below. The shape and quantity of the first connecting portion 20 only need to be capable of welding to meet corresponding connection requirements. For example, the first connecting portion 20 may be a convex hull, or even a partial planar area on the body 10 . In this embodiment, in order to make the connection more stable, other parts of the bus bar 101 except the first connection part 20 can be located on the side of the component surface 501 of the circuit board 50 described below to facilitate the realization of the connection function. At the same time, to avoid false contact with other components on the soldering surface 502 of the circuit board 50 , the first connecting portion 20 is a column protruding from the body 10 .

Please refer to FIG. 3 and FIG. 4 together. In order to facilitate stable welding and avoid false contact, in this embodiment, each of the first connecting parts 20 includes a base 21 and two upright posts 22 . The base 21 is disposed on the top of the body 10 . The two uprights 22 are arranged on the base 21 , and the two uprights 22 are spaced apart. When the column 22 is accommodated in the soldering hole of the circuit board 50 described below, the base 21 protrudes from the body 10 so that there is a space between the body 10 and the circuit board 50 described below. Therefore, when the bus bar 101 receives an external force, the main body 10 contacts the circuit board 50 and conducts the external force to the circuit board 50 . The two columns 22 of each first connecting portion 20 can be fused together during welding, that is, a welding structure connecting two adjacent welding through holes and covering the welding surface 502 is formed on the circuit board 50, thereby improving stable connection performance. Certainly, according to corresponding connection requirements, the number of the columns 22 may vary, for example, there may be one or more.

Please continue to refer to FIG. 1 to FIG. 4 , the buffer portion 30 is used for installing the second connecting portion 40 . The buffer portion 30 is U-shaped. One end of the buffer portion 30 is disposed on the body 10 . It should be noted that the “one end and the other end of the buffer portion 30 ” mentioned in the invention refer to the free ends on both sides of the U. The buffer portion 30 is U-shaped to bear as much external force as possible from the second connecting portion 40 to the bus bar 101 , so as to reduce the force transmitted to the first connecting portion 20 as much as possible. The external force avoids reducing the soldering stability between the first connecting portion 20 and the soldering surface 502 of the circuit board 50 . In addition, the U-shape of the buffer part 30 can also have greater elastic deformation capacity, which improves the performance of buffering stress, so as to avoid stress directly impacting the first connecting part 20, thereby improving the performance of the first connecting part 20. The pressure bearing capacity of the solder connection with the circuit board 50 . In this embodiment, in order to improve the buffer performance, the depth direction of the U-shape of the buffer portion extends along the thickness direction of the wall-shaped main body 10 . In this embodiment, the depth direction of the U-shape of the buffer portion is opposite to the extending direction of the second connecting portion 40 .

In order to further enhance the elastic deformation capability to improve the cushioning performance, the cushioning part 30 includes a plurality of sub-buffering parts 35 . Each sub-buffering portion 35 is U-shaped, that is, the outer contour of the sub-buffering portion 35 is substantially the same as the outer contour of the buffering portion 30 . U-shaped through grooves 36 are disposed between adjacent sub-buffering portions 35 . All the sub-buffering parts 35 are arranged in sequence to form a U-shaped buffering part 30 as a whole. In order to facilitate manufacture and improve stability, the buffer portion 30 is made by stamping. The size and quantity of the sub-buffering portion 35 and the through-slot 36 are selected according to requirements. In this embodiment, there are six sub-buffers 35 . There are five through grooves 36 . In this embodiment, the buffer portion 30 is formed by punching into a structure having a plurality of sub-buffer portions 35 and through slots 36 . All sub-buffering parts 35 have the same size, so as to obtain balanced buffering and pressure-bearing performance. The through grooves 36 have the same size, so as to obtain balanced cushioning and pressure bearing performance.

Please continue to refer to FIG. 1 to FIG. 4 , in order to facilitate the connection of the buffer portion 30 with the main body 10 and the second connection portion 40 , the bus bar 101 further includes a lower extension portion 38 and an upper extension portion 39 . The lower extending portion 38 extends along the height direction of the body 10 and is connected between the body 10 and one end of the buffer portion 30 , that is, the bottom end of the lower extending portion 38 is disposed at On the main body 10 , the buffer portion 30 is disposed on the top end of the lower extension portion 38 . The upper extension part 39 extends along the height direction of the body 10 and is connected between the other end of the buffer part 30 and the second connecting part 40 , that is, the upper extension part 39 The bottom end is disposed on the other end of the buffer portion 30 , and the second connecting portion 40 is disposed on the top end of the upper extension portion 39 . In order to enhance the pressure-bearing performance of the lower extension part 38 , the lower extension part 38 has a height greater than that of the upper extension part 39 .

Please continue to refer to FIG. 1 to FIG. 4 , the second connecting portion 40 is disposed on the buffer portion 30 . The second connecting portion 40 may be directly disposed on the buffer portion 30 , or may be indirectly disposed on the buffer portion 30 through other structures. In this embodiment, the second connecting portion 40 is indirectly disposed on the buffer portion 30 through the upper extension portion 39 . The second connecting part 40 can be used for connecting external connecting parts. The second connecting portion 40 is used for connecting with external structures, such as connecting terminals or wires. In this embodiment, in order to facilitate the connection and cooperation with the connection member 60 described below, the second connection portion 40 is penetratingly provided with a connection through hole 41 along the height direction of the main body 10 . The connection through hole 41 is used to accommodate the connection piece 60 described below. It is conceivable that the hole wall of the connecting through hole 41 , the upper surface or the surface of the second connecting portion 40 surrounding the connecting through hole 41 may be in contact with the connecting member 60 to realize electrical connection.

Embodiment two:

Please refer to FIG. 5 and FIG. 6 , which are a connection assembly 102 provided by the present invention. The connection assembly 102 includes a circuit board 50 and the aforementioned bus bar 101 .

The circuit board 50 may also be referred to as a PCB (Printed Circuit Board, printed circuit board). The circuit board 50 includes a soldering surface 502 and an element surface 501 oppositely disposed (see FIG. 8 below). The component surface 501 is used to carry all electronic components. The soldering surface 502 is used to achieve soldering connections with pins or soldering pins of all electronic components through wave soldering.

The circuit board 50 is connected to the first connecting portion 20 of the bus bar 101 . In order to achieve a stable connection, in this embodiment, the circuit board 50 is provided with a soldering through hole (not shown in the figure) penetrating through the soldering surface 502 and the component surface 501 . As mentioned above, the soldering through hole is used to accommodate the first connecting portion 20 . The first connecting portion 20 extends from one side of the component surface 501 of the circuit board 50 to one side of the soldering surface 502 of the circuit board 50 through the soldering through hole, and the first connecting portion 20 and The soldering surface 502 of the circuit board 50 is connected by soldering. In this embodiment, the column 22 of the first connecting part 20 is accommodated in the soldering through hole of the circuit board 50, since the base 21 protrudes from the body 10, so that the body There is a space between 10 and the circuit board 50 , so as to avoid problems such as the body 10 contacting the circuit board 50 and transmitting the external force to the circuit board 50 when the bus bar 101 receives an external force.

In order to facilitate the connection of two ends of the connecting member 60 described below, the circuit board 50 is also provided with an installation through hole 58 .

When assembled, the buffer part 30 passes through the installation through hole 58 from the component surface 501 of the circuit board 50, and makes the main body 10 face the component surface 501 of the circuit board 50, and the second The connecting portion 40 is opposite to the soldering surface 502 of the circuit board 50 .

Embodiment three:

Referring to FIG. 7 to FIG. 9 , the present invention also provides a connector 103 . The connector 103 includes the connecting member 60 and the above-mentioned connecting component 102 .

The connecting member 60 is configured to be electrically connected to the second connecting portion 40 of the bus bar 101 . In this embodiment, the connecting member 60 is inserted into the connecting through hole 41 and is electrically connected to the second connecting portion 40 . The shape and structure of the connecting member 60 only need to be able to realize the corresponding electrical connection function. In this embodiment, in order to cooperate with the nut to achieve a stable connection, the connecting member 60 is a double-ended screw.

Embodiment four:

The present invention also provides a central electrical box (not shown in the figure). The central electrical box includes the aforementioned connector 103 and a housing (not shown in the figure). The circuit board 50 and the connector 60 are fixed in the casing. The shape and structure of the housing are selected according to requirements. The central electrical box can also be referred to as a central centralized control electrical box, which can be used for integrated control of circuit equipment of automobiles. It is conceivable that the central electrical box also includes other electronic circuits and the like.

In this embodiment, in order to facilitate assembly and force balance, the body 10 is arranged vertically to the circuit board 50 . In order to facilitate the assembly with the connecting member 60 and withstand the external force transmitted through the connecting member 60 , the second connecting portion 40 is arranged parallel to the circuit board 50 .

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement or improvement within the spirit of the present invention is covered by the claims of the present invention.

Claims (20)

1. A bus bar, characterized in that the bus bar comprises: Ontology; a first connecting part, the first connecting part is arranged on the body; a buffer part, the buffer part is U-shaped, and one end of the buffer part is arranged on the body; A second connection part, the second connection part is arranged on the other end of the buffer part. 2 . The busbar according to claim 1 , wherein the second connecting portion extends along a direction perpendicular to the height of the body. 3 . 3 . The busbar according to claim 2 , wherein the depth direction of the U-shape of the buffer portion is opposite to the extending direction of the second connecting portion. 4 . 4. The busbar according to claim 1, characterized in that: the buffer part comprises a plurality of sub-buffer parts, each sub-buffer part is U-shaped, and there are U-shaped gaps between adjacent sub-buffer parts. shaped slot. 5. Busbar according to claim 4, characterized in that all sub-buffers have the same size. 6. Busbar according to claim 4, characterized in that all the slots have the same size. 7. The bus bar according to claim 1, characterized in that: the bus bar further comprises a lower extension part and an upper extension part; The lower extension part is extended along the height direction of the body, and is connected between the body and one end of the buffer part; The upper extension part extends along the height direction of the body, and is connected between the upper end of the buffer part and the second connection part. 8. The busbar according to claim 7, characterized in that: along the height direction of the body, The lower extension has a greater height than the upper extension. 9. The busbar according to claim 1, characterized in that: the first connecting part comprises a base and a column; The base protrudes from the top of the body; The column is arranged on the top of the body, protrudes from the base and extends along the height direction of the body, so as to pass through the through hole on the circuit board and extend from one side of the circuit board to the other side . 10. The busbar according to claim 1, characterized in that: the first connection part comprises a base and a plurality of columns; The base protrudes from the top of the body; The plurality of columns are respectively arranged on the top of the body, and protrude from the base to extend along the height direction of the body, so as to pass through the through holes on the circuit board and extend from one side of the circuit board to The other side. 11. The busbar according to any one of claims 1 to 10, characterized in that: the busbar is a metal stamped integral piece. 12. The busbar according to any one of claims 1 to 10, characterized in that: the second connecting portion is penetrated with a connecting through hole along the height direction of the body, and the connecting through hole is used to accommodate Connectors. 13. A connection assembly, characterized in that the connection assembly comprises a circuit board and the bus bar according to any one of claims 1 to 11; the first connection part is electrically connected to the circuit board. 14. The connection assembly according to claim 13, characterized in that: the circuit board is provided with a welding through hole; the circuit board has a welding surface and a component surface arranged opposite to each other; The first connection part includes a base and at least one column; The base protrudes from the top of the body; The column is arranged on the top of the body, and protrudes from the base to extend along the height direction of the body, and the column passes through the soldering hole and extends from one side of the component surface of the circuit board to the side of the soldering face of the circuit board; The column is welded to the welding surface of the circuit board. 15. A connector, characterized in that the connector comprises a connecting piece and the connecting assembly according to claim 13 or 14; the connecting piece is configured to be connected to the second connecting portion of the bus bar. 16. The connector according to claim 15, characterized in that: the second connecting portion is provided with a connecting through hole along the height direction of the body; The connecting piece is inserted into the connecting through hole and is electrically connected with the second connecting portion. 17. The connector according to claim 15 or 16, wherein the connecting member is a stud. 18. A central electrical box, characterized in that: the central electrical box includes a housing and the connector according to any one of claims 15 to 17; The circuit board and the connector are fixed in the housing; The first connecting portion and the second connecting portion on the bus bar are respectively fixedly connected to the circuit board and the connecting piece. 19. The central electrical box according to claim 18, wherein the main body is arranged vertically to the circuit board. 20. The central electrical box according to claim 18, wherein the second connecting portion is arranged parallel to the circuit board.