CN107465006B - Busbar, coupling assembling, connector and central electrical apparatus box - Google Patents

Abstract

The invention discloses a busbar, a connecting assembly, a connector and a central electrical box. The busbar comprises a body, a first connecting part, a buffer part and a second connecting part. The first connecting portion is arranged on the body and is used for being welded and connected with the circuit board. The buffer part is U-shaped, and one end of the buffer part is arranged on the body. The second connecting portion is disposed on the other end of the buffer portion, and the second connecting portion may be used to connect an external connection member. According to the bus bar, the U-shaped buffer part can share more external force and has higher buffer performance, so that internal stress generated by the external force is prevented from directly impacting a connection structure between the first connection part and the circuit board, and stable connection performance is improved.

Description

Busbars, connection components, connectors and central electrical boxes

Technical field

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

Background technique

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

Contents of the invention

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

In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

The invention provides a bus bar. The busbars include:

ontology;

A first connection part, the first connection part is provided on the body, and the first connection part is used to connect a first external connection piece;

Buffering part, the buffering part is U-shaped, and one end of the buffering part is arranged on the body;

A second connection part is provided on the other end of the buffer part, and the second connection part can be used to connect a second external connection piece.

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

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

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

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

Preferably, all sub-buffers have the same size.

Preferably, all channels are of the same size.

Preferably, the busbar further includes a lower extension part and an upper extension part;

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

The upper extending portion extends along the height direction of the body and is connected between the upper end of the buffer portion and the second connecting portion.

Preferably, the lower extending portion has a height greater than that of the upper extending portion in a height direction of the body.

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

The base is protrudingly provided on the top of the body;

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

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

The base is protrudingly provided on the top of the body;

The plurality of upright posts are respectively arranged at the top of the body, and protrude from the base and 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 busbar is a metal stamped integrated piece.

Preferably, the second connecting portion is provided with a connecting through hole along the height direction of the body, and the connecting through hole is used to accommodate a connecting piece.

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

Preferably, the circuit board is provided with welding through holes;

The first connection part is a protruding column, and the first connection part passes through the soldering through hole and extends from one side of the component surface of the circuit board to one side of the soldering surface of the circuit board, and The first connection part is welded to the soldering surface of the circuit board.

Preferably, the present invention provides another welding connection method:

The circuit board is provided with welding through holes; the circuit board has a welding surface and a component surface arranged back to back;

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

The base is protrudingly provided on the top of the body;

The upright is disposed at the top of the body and protrudes from the base to extend along the height direction of the body, and the upright passes through the welding through hole and extends from one side of the component surface of the circuit board. To one side of the soldering surface of the circuit board;

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

The invention also provides a connector. The connector includes a connecting piece and a connecting component 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 connector is inserted into the connection through hole and is electrically connected to the second connection part.

Preferably, the connecting member is a 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 connecting piece are fixed in the housing;

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

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 busbar of the present invention can share more external forces through the U-shaped buffer portion, has higher buffering performance, and avoids internal stress generated by external forces from directly impacting the connection between the first connection portion and the circuit board. connection structure, thereby improving stable connection performance.

Preferably, the buffering part includes a plurality of sub-buffering parts and through-grooves, which further enhances the elastic deformation capability, thereby enhancing the buffering performance. The first connection part includes a base and a column, which not only prevents the main body from contacting the circuit board but also enhances the welding connection performance.

Description of drawings

FIG. 1 is a schematic structural diagram of a bus bar provided by the present invention from an angle.

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

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

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

Figure 5 is a schematic structural diagram of a connection component provided by the present invention from an angle.

FIG. 6 is a schematic structural view of the connection component shown in FIG. 5 from another angle.

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

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

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

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings:

Example 1:

Please refer to FIG. 1 and FIG. 2 , which shows a bus 101 provided by the present invention. The bus bar 101 includes a body 10 , a first connecting part 20 , a buffer part 30 and a second connecting part 40 . The first connection part 20 is provided on the main body 10 and is used to achieve soldering connection with the circuit board 50 described below. One end of the buffer portion 30 is disposed on the main body 10 . The second connection part 40 is provided on the other end of the buffer part 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 shape of the main body 10 is roughly like a wall formed by two L-shapes connected 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 part 20 is provided on the body 10 . In this embodiment, the first connecting portion 20 is provided on the top of the body 10 . The first connecting part 20 is used to connect 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 number of the first connecting portions 20 can be welded to meet corresponding connection requirements. For example, the first connecting portion 20 can 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 component surface 501 side of the circuit board 50 described below to facilitate the connection function. At the same time, miscontact with other components on the soldering surface 502 of the circuit board 50 is avoided. The first connection part 20 is a pillar protrudingly provided on the body 10 .

Please refer to FIGS. 3 and 4 together. In order to facilitate stable welding and avoid mistaken contact, in this embodiment, each first connection part 20 includes a base 21 and two uprights 22 . The base 21 is provided on the top of the body 10 . The two upright columns 22 are arranged on the base 21 and are spaced apart from each other. When the column 22 is accommodated in the welding through hole of the circuit board 50 described below, the base 21 protrudes from the body 10 so that there is a gap between the body 10 and the circuit board 50 described below. This avoids problems such as causing the main body 10 to contact the circuit board 50 when the bus bar 101 is subjected to external force, and transmitting the external force to the circuit board 50 . The two uprights 22 of each first connecting part 20 can be fused together during welding, that is, a welding structure connecting two adjacent welding through holes is formed on the circuit board 50 and covering the welding surface 502 , thereby improving the performance of the circuit board 50 . for stable connection performance. Of course, according to the corresponding connection requirements, the number of the upright posts 22 can be changed, for example, it can be one or more.

Please continue to refer to FIGS. 1 to 4 , the buffer portion 30 is used to install the second connecting portion 40 . The buffer portion 30 is U-shaped. One end of the buffer portion 30 is disposed on the main 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-shape. The buffer portion 30 is U-shaped to withstand as much external force transmitted from the second connecting portion 40 to the bus bar 101 as possible, thereby minimizing the amount of external force transmitted to the first connecting portion 20 external force to avoid reducing the welding stability of the welding surface 502 of the first connection part 20 and the circuit board 50 . In addition, the U-shaped buffer portion 30 can also have greater elastic deformation capacity, which improves the stress-buffering performance and prevents stress from directly impacting the first connecting portion 20 , thereby improving the first connecting portion 20 The pressure-bearing capacity of the soldered connection to the circuit board 50. In this embodiment, in order to improve the buffering performance, the U-shaped depth direction of the buffering 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 extension direction of the second connecting portion 40 .

In order to further enhance the elastic deformation capability and improve the cushioning performance, the buffer portion 30 includes a plurality of sub-buffer portions 35 . Each sub-buffer portion 35 is U-shaped, that is, the outer contour of the sub-buffer portion 35 is substantially the same as the outer contour of the buffer portion 30 . U-shaped through grooves 36 are provided between adjacent sub-buffer portions 35 . All sub-buffer portions 35 are arranged in sequence, thereby forming a U-shaped buffer portion 30 as a whole. In order to facilitate manufacturing and improve stability, the buffer portion 30 is made by stamping. The size and quantity of the sub-buffer portion 35 and the through-slot 36 are selected according to needs. In this embodiment, there are six sub-buffers 35 . There are five through slots 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 grooves 36 . All sub-buffer parts 35 have the same size, thereby obtaining balanced buffering and pressure-bearing performance. The through-slots 36 have the same size, thereby obtaining balanced buffering and pressure-bearing properties.

Please continue to refer to FIGS. 1 to 4 . In order to facilitate the connection between the buffer portion 30 and the main body 10 and the second connecting 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 main body 10 and is connected between the main body 10 and one end of the buffer portion 30 . That is, the bottom end of the lower extending portion 38 is disposed on On the main body 10 , the buffer portion 30 is provided on the top end of the lower extending 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 provided on the other end of the buffer portion 30 , and the second connecting portion 40 is provided on the top end of the upper extending portion 39 . In order to enhance the pressure-bearing performance of the lower extension portion 38 , the lower extension portion 38 has a height greater than that of the upper extension portion 39 .

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

Example 2:

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

The circuit board 50 may also be called a PCB (Printed Circuit Board). The circuit board 50 includes a soldering surface 502 and a component surface 501 arranged oppositely (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 the pins or soldering feet 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 labeled in the figure) that penetrates the soldering surface 502 and the component surface 501 . As mentioned above, the welding 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 uprights 22 of the first connecting part 20 are accommodated in the welding through holes of the circuit board 50. Since the base 21 is protrudingly provided on the body 10, the body 10 is There is a gap between the bus bar 10 and the circuit board 50 , thereby avoiding problems such as causing the body 10 to contact the circuit board 50 and transmitting external force to the circuit board 50 when the bus bar 101 is subjected to external force.

In order to facilitate the connection of the two ends of the connector 60 described below, the circuit board 50 is also provided with a mounting through hole 58 .

During assembly, the buffer portion 30 passes through the mounting through hole 58 from the component surface 501 of the circuit board 50 so that the main body 10 faces the component surface 501 of the circuit board 50 , and the second second The connecting portion 40 is directly opposite to the soldering surface 502 of the circuit board 50 .

Embodiment three:

Referring to Figures 7 to 9, the present invention also provides a connector 103. The connector 103 includes a connecting piece 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 part 40 . The shape and structure of the connector 60 only need to be able to achieve 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-headed screw.

Embodiment 4:

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 housing. The shape and structure of the housing are selected according to needs. The central electrical box can also be called a central centralized electrical box, which can be used to integrate and control the circuit equipment of the automobile. It is conceivable that the central electrical box also includes other electronic circuits.

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 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 scope of protection of the present invention. Any modifications, equivalent substitutions or improvements within the spirit of the present invention are covered by the claims of the present invention.

Claims (20)

1. A bus bar, the bus bar comprising:

a body;

a first connection portion provided on the body and configured to be electrically connected with a circuit board, wherein the body is provided perpendicular to the circuit board, the first connection portion extending in a height direction of the body;

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

the second connecting part is arranged at the other end of the buffer part;

wherein the buffer part is configured to pass through a mounting through hole on the circuit board, so that the body and the second connecting part are positioned at two sides of the circuit board.

2. The bus bar of claim 1, wherein: the second connecting part extends along the height direction perpendicular to the body, and the plane where the second connecting part is located is parallel to the circuit board.

3. The bus bar of claim 2, wherein: the depth direction of the U-shape of the buffer part is opposite to the extending direction of the second connecting part.

4. The bus bar of claim 1, wherein: the buffer part comprises a plurality of sub buffer parts, each sub buffer part is U-shaped, and a U-shaped through groove is formed between every two adjacent sub buffer parts.

5. The bus bar of claim 4, wherein: all sub-buffers have the same size.

6. The bus bar of claim 4, wherein: all through slots have the same dimensions.

7. The bus bar of claim 1, wherein: the busbar further comprises a lower extension part and an upper extension part;

the lower extension part is arranged in an extending manner 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 connecting part.

8. The bus bar of claim 7, wherein: the lower extension has a height greater than the upper extension in a height direction along the body.

9. The bus bar of claim 1, wherein: the first connecting part comprises a base and an upright post;

the base is arranged at the top end of the body in a protruding mode;

the stand column is arranged at the top end of the body, protrudes out of the base and extends along the height direction of the body so as to be used for penetrating through a through hole on the circuit board and extending from one side of the circuit board to the other side of the circuit board.

10. The bus bar of claim 1, wherein: the first connecting part comprises a base and a plurality of upright posts;

the base is arranged on the top end of the body in a protruding mode;

the plurality of stand columns are respectively arranged at the top end of the body, and protrude out of the base to extend along the height direction of the body so as to be used for penetrating through the through hole on the circuit board to extend from one side of the circuit board to the other side of the circuit board.

11. The bus bar according to any one of claims 1 to 10, characterized in that: the busbar is a metal stamping integrated piece.

12. The bus bar according to any one of claims 1 to 10, characterized in that: the second connecting portion is provided with a connecting through hole in a penetrating mode along the height direction of the body, and the connecting through hole is used for accommodating the connecting piece.

13. The bus bar of claim 12, wherein: the connecting piece can pass through the mounting through hole on the circuit board, so that the two ends of the connecting piece can be connected conveniently.

14. A connection assembly comprising a circuit board and the bus bar of any one of claims 1 to 11; the first connection part is electrically connected with the circuit board.

15. The connection assembly of claim 14, wherein: the circuit board is provided with a welding through hole; the circuit board is provided with a welding surface and an element surface which are arranged back to back;

the first connecting part comprises a base and at least one upright post;

the base is arranged at the top end of the body in a protruding mode;

the stand column is arranged at the top end of the body and protrudes out of the base to extend along the height direction of the body, and the stand column penetrates through the welding through hole to extend from one side of the element surface of the circuit board to one side of the welding surface of the circuit board;

and the stand column is welded with the welding surface of the circuit board.

16. A connector comprising a connector and the connection assembly of claim 14 or 15; the connector is configured to connect with the second connection portion of the busbar.

17. The connector of claim 16, wherein: the second connecting part is provided with a connecting through hole in a penetrating way 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 part.

18. The connector according to claim 16 or 17, wherein: the connecting piece is a double-end stud.

19. A central electrical box, characterized in that: the central electrical box comprising a housing and the connector of any one of claims 16 to 18;

the circuit board and the connecting piece are fixed in the shell;

the first connecting part and the second connecting part on the busbar are respectively and fixedly connected with the circuit board and the connecting piece.

20. The center box of claim 19, wherein: the second connecting part is arranged in parallel with the circuit board.