Flexible printed circuit board and integrated busbar

Abstract

The flexible printed circuit board comprises a bonding pad, a connecting sheet, a first acquisition sheet and a second acquisition sheet which are integrally formed, one side of the bonding pad is used for being connected with a slave plate; one end of the connecting sheet is connected to the other side of the bonding pad, and the other end of the connecting sheet is in a movable state; the first acquisition sheet and the second acquisition sheet are respectively arranged at two ends of the connecting sheet, and the first acquisition sheet, the second acquisition sheet and the connecting sheet are integrally U-shaped; the first acquisition piece and the second acquisition piece are respectively provided with at least one first acquisition end and a plurality of second acquisition ends, the at least one first acquisition end is positioned on one side close to the second acquisition piece, and the plurality of second acquisition ends are positioned on one side close to the first acquisition piece. The utility model also provides an integrated busbar using the flexible printed circuit board. Compared with the prior art, the flexible printed circuit board provided by the utility model alleviates the problem that the bending part becomes white, and also reduces the manufacturing cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of flexible printed circuit board, concretely relates to a flexible printed circuit board and integrated busbar using the flexible printed circuit board. BACKGROUND

[0002] At present, part integrated busbar will set up slave board (hard board), this kind of integrated busbar carries out data transmission, and the both ends of the plug wire are connected with the port of slave board and the equipment port, thereby realizing data transmission. The structure of this kind of integrated busbar is basically same as the existing structure, including support and the aluminum bar, flexible printed circuit board and slave board installed on the support, and the slave board is located above the flexible printed circuit board. In order to let the flexible printed circuit board can collect the aluminum bar below the slave board, and can be connected with the slave board simultaneously, the flexible printed circuit board will be folded into three layers, and the overall shape is S type structure, wherein the lower part is connected with the aluminum bar, the middle layer part is the return layer, so that the upper part can be connected with the slave board. Since only the upper part is connected with the slave board, it will not be pressed by the slave board, and the middle layer and the lower part are below the slave board, when the slave board is fixed on the integrated busbar support, the slave board will press the middle layer and the lower layer of the flexible printed circuit board, in this way, the bending position is easy to be compacted, and the circuit is stretched to appear the whitening problem, which will reduce the circuit reliability of the position. In addition, the S type structure of the flexible printed circuit board makes its length need to be designed longer, and the flexible printed circuit board with longer length will increase the manufacturing cost. SUMMARY

[0003] The utility model aims at overcoming the deficiency in prior art, and provides a flexible printed circuit board.

[0004] In order to realize the above object, the utility model discloses a flexible printed circuit board, including integrative pad, connecting piece, first collection piece and second collection piece;

[0005] One side of the pad is used for being connected with the slave board;

[0006] One end of the connecting piece is connected to the other side of the pad, and the other end of the connecting piece is in a movable state;

[0007] The first collection piece and the second collection piece are arranged at two ends of the connecting piece respectively, and the overall shape of the first collection piece, the second collection piece and the connecting piece is U-shaped;

[0008] At least one first collection end and a plurality of second collection ends are arranged on the first collection piece and the second collection piece respectively, the at least one first collection end is located on the side close to the second collection piece, and the plurality of second collection ends are located on the side close to the first collection piece;

[0009] The two ends of the connecting piece are folded, and the first collecting piece is folded by 180 degrees towards the side of the soldering pad, so that the flexible printed circuit board is in a folded state.

[0010] Preferably, a first pre-bending groove is arranged at the middle position of the connecting piece, and the two ends of the connecting piece are symmetrically arranged with respect to the first pre-bending groove.

[0011] Preferably, a second pre-bending groove is arranged at the position close to the connecting piece of the first collecting piece, and the second pre-bending groove is reversely arranged along the width of the first collecting piece.

[0012] Preferably, in the folded state, the first collecting piece and the second collecting piece are flush.

[0013] Preferably, in the folded state, the first collecting end and the second collecting end are flush.

[0014] Preferably, the connecting piece, the first collecting piece and the second collecting piece have two groups, and the two groups of the connecting piece, the first collecting piece and the second collecting piece are symmetrically arranged with respect to the center line of the length direction of the soldering pad.

[0015] Preferably, the first collecting piece and / or the second collecting piece is provided with a positioning hole.

[0016] Preferably, the positioning hole is arranged on the side away from the corresponding collecting end.

[0017] The utility model further provides an integrated busbar using the flexible printed circuit board.

[0018] An integrated busbar comprises a support, an aluminum busbar, a flexible printed circuit board and a slave plate mounted on the support, the flexible printed circuit board is any one of the flexible printed circuit boards described above, the first collecting piece is located below the slave plate, the second collecting piece is located outside the slave plate, and the soldering pad is electrically connected with the slave plate.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] This utility model discloses a flexible printed circuit board. A first and second acquisition piece are respectively located at both ends of a connecting piece. The overall shape of the first, second, and connecting pieces is U-shaped. Each of the first and second acquisition pieces has at least one first acquisition terminal and multiple second acquisition terminals. At least one first acquisition terminal is located on the side closest to the second acquisition piece, and multiple second acquisition terminals are located on the side closest to the first acquisition piece. In actual use, the two ends of the connecting piece are folded in half, and the first acquisition piece is folded 180 degrees towards the pads, thus placing the flexible printed circuit board in a folded state. At this time, the first and second acquisition pieces are on the same side, and the acquisition terminals of both acquisition pieces extend to the same side, allowing for acquisition of the same row of aluminum bars. When used in an integrated busbar with a slave board, the first acquisition piece, after being folded 180 degrees, can be installed under the slave board. The folded positions of the connecting piece and the first acquisition piece can be located outside the slave board, preventing them from being pressed down by the slave board. This greatly alleviates the problem of whitening and unreliable circuitry at the folded position caused by compression.

[0021] Since the first acquisition piece only needs to be folded 180 degrees to acquire aluminum bars from below the board, compared with the existing S-shaped structure, the flexible printed circuit board is shorter in length when unfolded, making it easier to manufacture and reducing manufacturing costs. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an integrated busbar with slave plates in the prior art;

[0023] Figure 2 for Figure 1 A three-dimensional exploded view of the integrated busbar structure;

[0024] Figure 3 A top view of the flexible printed circuit board in its unfolded state as shown in the embodiment;

[0025] Figure 4 for Figure 3 A top view of a flexible printed circuit board in its folded state;

[0026] Figure 5 This is a three-dimensional structural diagram of the integrated busbar in Example 2;

[0027] Figure 6 for Figure 5 A three-dimensional exploded view of the integrated busbar structure;

[0028] Pad 10;

[0029] Connecting piece 20; First pre-bending groove 21;

[0030] First acquisition plate 30; First acquisition end 31; Second pre-bending groove 32; Positioning hole 33;

[0031] Second collecting sheet 40; Second collecting end 41;

[0032] Support 50;

[0033] Aluminum bar 60;

[0034] Flexible printed circuit 70

[0035] From plate 80. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further explained in detail below by combining with the drawings and specific embodiments.

[0037] Embodiment 1

[0038] A flexible printed circuit board, see Figures 3-4 , including integrally-formed solder pad 10, connecting sheet 20, first collecting sheet 30 and second collecting sheet 40. Wherein, one side of solder pad 10 is used to be connected with from plate, one end of connecting sheet 20 is connected to the other side of solder pad 10, the other end of connecting sheet 20 is in movable state, so that its free end can be folded to the other end. First collecting sheet 30 and second collecting sheet 40 are respectively arranged at both ends of connecting sheet 20, the overall shape of first collecting sheet 30, second collecting sheet 40 and connecting sheet 20 is U-shaped; At least one first collecting end 31 and multiple second collecting ends 41 are respectively arranged on first collecting sheet 30 and second collecting sheet 40, the number of two collecting ends is arranged according to the corresponding aluminum bar on integrated busbar, the at least one first collecting end 31 is located on the side close to second collecting sheet 40, and the multiple second collecting ends 41 are located on the side close to first collecting sheet 30. In actual use, both ends of connecting sheet 20 are folded and first collecting sheet 30 is folded by 180 degrees to the side of solder pad 10, so that the flexible printed circuit board is in folded state, at this time, first collecting sheet 30 and second collecting sheet 40 are located on the same side, and the collecting ends of the two collecting sheets also extend to the same side, at this time, the same row of aluminum bars can be collected. When it is used for integrated busbar with from plate, first collecting sheet 30 can be installed below from plate after being folded by 180 degrees, and the folding position of connecting sheet 20 and the folding position of first collecting sheet 30 can be located on the outside of from plate, which will not be pressed by from plate, greatly relieving the problem that the line at the folding position is white and unreliable due to the pressing of the folding position. Since first collecting sheet 30 only needs to be folded by 180 degrees to collect the aluminum bar below from plate, compared with the existing S-shaped structure, the length of flexible printed circuit board in unfolded state is short, which is more convenient for manufacturing, can reduce manufacturing cost and processing cost of process tooling.

[0039] In the embodiment, a first pre-bending groove 21 is arranged at the middle position of the connecting piece 20, and the two ends of the connecting piece 20 are symmetrically arranged about the first pre-bending groove 21. The first pre-bending groove 21 is arranged to facilitate the bending of the connecting piece 20, improve the assembly efficiency, and ensure the bending accuracy, so that the first collecting piece 30 and the second collecting piece 40 can be located at the predetermined position after being bent.

[0040] Further, a second pre-bending groove 32 is arranged at the position close to the connecting piece 20 of the first collecting piece 30, and the second pre-bending groove 32 is arranged reversely along the width of the first collecting piece 30, which can also improve the assembly efficiency and the position accuracy after being bent.

[0041] In the embodiment, in the folded state, the first collecting piece 30 and the second collecting piece 40 are flush, and the first collecting end 31 and the second collecting end 41 are flush, so that the collecting ends of the two collecting pieces can be located in the same row, which can ensure the welding accuracy and reliability of the collecting end (nickel sheet) and the aluminum bar in the later stage.

[0042] In the embodiment, the connecting piece 20, the first collecting piece 30 and the second collecting piece 40 are two groups, and the two groups of the connecting piece 20, the first collecting piece 30 and the second collecting piece 40 are symmetrically arranged about the center line of the length direction of the solder pad 10.

[0043] In the embodiment, the first collecting piece 30 and the second collecting piece 40 are provided with a positioning hole 33, which is arranged on the side away from the corresponding collecting end. The positioning hole 33 can cooperate with the hot riveting column of the integrated busbar support, so as to limit the flexible printed circuit board on the support.

[0044] Embodiment 2

[0045] An integrated busbar, referring to Figures 5-6 , comprising a support 50 and an aluminum bar 60, a flexible printed circuit board 70 and a from board 80 mounted on the support, the flexible printed circuit board is the flexible printed circuit board of embodiment 1, the first collecting piece 30 is located below the from board, the second collecting piece 40 is located outside the from board, and the solder pad 10 is electrically connected with the from board.

[0046] During assembly, the flexible printed circuit board to be welded with the from board is welded first. For the flexible printed circuit board of embodiment 1, the two ends of the connecting piece 20 are folded, and the first collecting piece 30 is folded by 180 degrees to the side of the solder pad 10, so that the flexible printed circuit board is in the folded state. Then, the first collecting piece 30 is positioned below the from board through the cooperation of the positioning hole 33 and the hot riveting column. Then, the from board is fixed on the support, and the first collecting piece 30 is limited. Finally, the aluminum bar, the flexible printed circuit board and the from board are fixed on the support by laser welding and hot riveting process.

[0047] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A flexible printed circuit board, characterized by: The flexible printed circuit board comprises a soldering pad, a connecting strip, a first collecting strip and a second collecting strip which are integrally formed; One side of the soldering pad is used to connect with a slave board; One end of the connecting strip is connected to the other side of the soldering pad, and the other end of the connecting strip is movable; The first collecting strip and the second collecting strip are respectively arranged at two ends of the connecting strip, and the overall shape of the first collecting strip, the second collecting strip and the connecting strip is in U shape; At least one first collecting end and a plurality of second collecting ends are respectively arranged on the first collecting strip and the second collecting strip, the at least one first collecting end is located on the side close to the second collecting strip, and the plurality of second collecting ends are located on the side close to the first collecting strip; The two ends of the connecting strip are folded, and the first collecting strip is folded by 180 degrees towards the side of the soldering pad, so that the flexible printed circuit board is in a folded state.

2. The flexible printed circuit board of claim 1, wherein: A first pre-bending groove is arranged at the middle position of the connecting strip, and the two ends of the connecting strip are symmetrically arranged about the first pre-bending groove.

3. The flexible printed circuit board of claim 1, wherein: A second pre-bending groove is arranged at the position of the first collecting strip close to the connecting strip, and the second pre-bending groove is reversely arranged along the width of the first collecting strip.

4. The flexible printed circuit board of claim 1, wherein: In the folded state, the first collecting strip and the second collecting strip are flush.

5. The flexible printed circuit board of claim 4, wherein: In the folded state, the first collecting end and the second collecting end are flush.

6. The flexible printed circuit board of claim 1, wherein: The connecting strip, the first collecting strip and the second collecting strip have two groups, and the two groups of the connecting strip, the first collecting strip and the second collecting strip are symmetrically arranged about the center line of the length direction of the soldering pad.

7. The flexible printed circuit board of claim 1, wherein: Positioning holes are arranged on the first collecting strip and / or the second collecting strip.

8. The flexible printed circuit board of claim 7, wherein: The positioning holes are arranged on the side away from the corresponding collecting end.

9. An integrated busbar comprising a support and an aluminum bar, a flexible printed circuit board and a plate mounted on the support, characterized in that: The flexible printed circuit board is the flexible printed circuit board according to any one of claims 1-8, the first collecting strip is located below the slave board, the second collecting strip is located outside the slave board, and the soldering pad is electrically connected with the slave board.

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