FPC board

Abstract

The utility model provides an FPC board, which comprises an FPC mainboard, a reinforcing plate, a pin header and a socket, the FPC mainboard comprises a first part, a second part and a third part, and trapezoidal chamfers are arranged at the joints of the second part and the first part as well as the third part; the FPC main board comprises at least two conductive layers, and the conductive layers are used for conducting the control main board and the wiring board; the reinforcing plates are respectively positioned above the first part and the third part and are fixedly connected with the FPC main board; the pin header is located above the first part and used for electrically connecting the FPC mainboard with the control mainboard, and the socket is located above the third part and used for detachably and electrically connecting the FPC mainboard with the wiring board. According to the utility model, two conductive layers are provided to reduce impedance and effectively improve stability; the reinforcing plates provide supporting force, and the stability is further improved; according to the utility model, trapezoidal chamfers are arranged, so that the FPC board is prevented from being broken, and the stability is further improved; according to the utility model, the FPC mainboard is detachably and electrically connected, so that the flexibility is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printed circuit board technical field especially relates to a kind of FPC board. BACKGROUND

[0002] Intelligent control valve is the microelectronic technology, control technology, communication technology, software technology and conventional control technology in one, and can realize intelligent control control equipment;Intelligent control valve has important significance in improving the degree of automation of production process, reducing operating costs and improving safety.Intelligent control valve is usually composed of intelligent valve positioner, actuator and regulating valve, actuator pushes the valve stem in regulating valve to move and then changes the size of opening, and intelligent valve positioner is with valve stem displacement as the feedback control signal, to realize the feedback control of actuator;Intelligent valve positioner includes control mainboard and flat cable board, flat cable board is used for the output and input of various signals, and control mainboard and flat cable board are usually installed separately in different positions, and how to realize stable electrical connection is crucial;Traditional technology is mostly connected by wire, and there are problems of poor stability and poor flexibility. SUMMARY

[0003] The utility model provides a kind of FPC board to more exactly solve the above-mentioned problems of poor stability and poor flexibility.

[0004] The utility model is realized by the following technical solutions:

[0005] The utility model provides a kind of FPC board, the FPC mainboard includes first part, second part and third part, the second part and first part junction are equipped with trapezoidal chamfer, and the second part and the third part junction are equipped with trapezoidal chamfer;The FPC mainboard includes at least two conductive layers, and the conductive layer is used for the electrical connection of control mainboard and flat cable board;

[0006] Including reinforcing plate, the reinforcing plate is located above the first part and the third part respectively;

[0007] Including row pin, the row pin is located above the first part, and is used for the electrical connection with the control mainboard;

[0008] Including socket, the socket is located above the third part, and is used for the detachable electrical connection with the flat cable board.

[0009] Further, the conductive layer includes first conductive layer and second conductive layer, the first conductive layer is equipped with a plurality of first conductive wires, the second conductive layer is equipped with a plurality of second conductive wires, the first conductive wire is correspondingly arranged with the second conductive wire respectively, and constitutes a plurality of conductive wire groups.

[0010] Further, two ends of the conductive wire group are located at the first part and the third part respectively.

[0011] Further, the FPC mainboard is further provided with a plurality of conductive vias, the conductive vias are respectively located in the first part and the third part, and are used for conducting the conductive wire group.

[0012] Further, the first part and the third part have the same width, and the width of the first part and the third part is greater than the width of the second part.

[0013] Further, the width of the reinforcing plate corresponds to the width of the first part and the third part, and is respectively fixedly connected with the first part and the third part.

[0014] Further, the reinforcing plate is further provided with a groove, and the groove is used for clamping the flat cable plate.

[0015] Further, one end of the pin passes through the reinforcing plate and is electrically connected with the conductive via, and the other end is used for electrically connecting with the control mainboard.

[0016] Further, one end of the socket passes through the reinforcing plate and is electrically connected with the conductive via, and the other end is used for detachably electrically connecting with the flat cable plate.

[0017] Further, the FPC mainboard further comprises a covering protective film layer, the covering protective film layer is located outside the first conductive layer and the second conductive layer, and the width of the covering protective film layer is greater than the width of the first conductive layer and the second conductive layer.

[0018] The utility model discloses the beneficial effect:

[0019] The utility model provides a kind of FPC board, including FPC mainboard, reinforcing plate, row pin and socket, FPC mainboard includes first part, second part and third part, second part and the connecting place of first part and third part are equipped with trapezoidal chamfer;FPC mainboard includes at least two conductive layers, and conductive layer is used to pass through control mainboard and flat cable board;Reinforcing plate is located above first part and third part respectively, and is fixedly connected with FPC mainboard;Row pin is located above first part, and is used for FPC mainboard and control mainboard electrical connection, socket is located above third part, and is used for FPC mainboard and flat cable board detachable electrical connection.The utility model proposes to set two layers of conductive layers on FPC mainboard, and the conductive wire of different conductive layer corresponding position is same, it is favorable to reduce the impedance of circuit, effectively improves connection stability;The utility model proposes that reinforcing plate provides support force for FPC mainboard, and reinforcing plate is equipped with recess, so that FPC mainboard and flat cable board clamping are more compact, further improve stability;The utility model proposes to set trapezoidal chamfer at the connecting place of second part and first part and third part, avoid the rupture of the connecting place of second part and first part and third part when FPC mainboard is subjected to tension, further improve stability;The utility model proposes that the width of covering protective film layer is greater than the width of the conductive layer, avoid damaging conductive layer, further improve stability;The utility model proposes to set row pin and socket, so that FPC mainboard and control mainboard and flat cable board are detachable electrical connection, effectively improve flexibility;The utility model proposes;The utility model proposes FPC board replaces traditional wire connection, and FPC board is smaller in size, more portable and easy to fold, further improve flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is the overall structural diagram of a kind of FPC board in an embodiment of the utility model;

[0021] Fig. 2 It is the overall structural diagram of FPC mainboard in an embodiment of the utility model.

[0022] Label explanation:1, FPC mainboard;11, first part;12, second part;13, third part;14, conductive layer;141, first conductive layer;142, second conductive layer;15, covering protective film layer;16, conductive via;17, trapezoidal chamfer;18, conductive wire;2, reinforcing plate;21, recess;3, row pin;4, socket. DETAILED DESCRIPTION

[0023] In order to more clearly and completely illustrate the technical scheme of the utility model, the utility model is further described below in conjunction with the drawings.

[0024] Please refer to Figs. 1-2The utility model provides a kind of FPC board, including FPC mainboard 1, reinforcing plate 2, row pin 3 and socket 4, FPC mainboard 1 includes first part 11, second part 12 and third part 13, second part 12 and the connecting place of first part 11 is equipped with trapezoidal chamfer 17, second part 12 and the connecting place of third part 13 is equipped with trapezoidal chamfer 17;FPC mainboard 1 includes at least two conductive layers 14, and the conductive layer 14 is used for the conduction control mainboard and flat cable board;Reinforcing plate 2 is located above first part 11 and third part 13 respectively;Row pin 3 is located above first part 11, and is used for being electrically connected with control mainboard;Socket 4 is located above third part 13, and is used for being detachably electrically connected with flat cable board.

[0025] In the embodiment, FPC is made of polyester film (PET) or polyimide (PI) as base material, which is a kind of printed circuit with high reliability and excellent flexibility. By embedding circuit design on a bendable thin plastic sheet, a large number of precise components are embedded in a narrow and limited space to form a bendable flexible circuit, which has the characteristics of high wiring density, light weight, thin thickness and good bending property. Therefore, it has been widely used in the fields of electronics, automobiles, medical treatment, aerospace and the like. The FPC board includes FPC mainboard 1, reinforcing plate 2, row pin 3 and socket 4. The FPC mainboard 1 includes first part 11, second part 12 and third part 13. The connecting place of the second part 12 and the first part 11 is provided with trapezoidal chamfer 17. The connecting place of the second part 12 and the third part 13 is provided with trapezoidal chamfer 17. The FPC mainboard 1 includes a protective film layer 15 and a conductive layer 14. The conductive layer 14 includes a first conductive layer 141 and a second conductive layer 142. The protective film layer 15 is located outside the first conductive layer 141 and the second conductive layer 142. The width of the protective film layer 15 is greater than the width of the first conductive layer 141 and the second conductive layer 142. The first conductive layer 141 is provided with a plurality of first conductive lines 18. The second conductive layer 142 is provided with a plurality of second conductive lines 18. The first conductive lines 18 are correspondingly arranged with the second conductive lines 18, and form a plurality of conductive line groups 18. The two ends of the conductive line group 18 are located in the first part 11 and the third part 13, respectively. The FPC mainboard 1 is also provided with a plurality of conductive vias 16. The conductive vias 16 are located in the first part 11 and the third part 13, respectively, and are used for conducting the conductive line group 18. The reinforcing plate 2 is located above the first part 11 and the third part 13, respectively. The width of the reinforcing plate 2 corresponds to the width of the first part 11 and the third part 13, and is fixedly connected with the first part 11 and the third part 13, respectively. The reinforcing plate 2 is also provided with a groove 21 for clamping the flat cable board. One end of the row pin 3 penetrates through the reinforcing plate 2 and is electrically connected with the conductive via 16. The other end is used for electrically connecting with the control mainboard. One end of the socket 4 penetrates through the reinforcing plate 2 and is electrically connected with the conductive via 16. The other end is used for detachably electrically connecting with the flat cable board.

[0026] The utility model provides a FPC mainboard 1 is provided with two layers of conductive layer 14, and the conductive wire 18 of different conductive layer 14 corresponding position is same, is favorable for reducing the impedance of circuit, effectively improves the stability of connection, the utility model provides that the reinforcing plate 2 provides the support force for FPC mainboard 1, and the reinforcing plate 2 is equipped with recess 21, makes FPC mainboard 1 and the wiring board card joint more compact, further improves stability, the utility model provides that the trapezoidal chamfer 17 is arranged at the connecting place of the second part 12 and the first part 11 and the third part 13, avoids the rupture of the connecting place of the second part 12 and the first part 11 and the third part 13 when FPC mainboard 1 is subjected to the tension, further improves stability, the utility model provides that the width of the protective film layer 15 is greater than the width of conductive layer 14, avoids destroying conductive layer 14, further improves stability, the utility model provides that the setting needle 3 and socket 4 make FPC mainboard 1 with control mainboard and wiring board can be detachably electrically connected, effectively improves flexibility, the utility model provides, the utility model provides that FPC board replaces traditional wire connection, and FPC board is smaller in size, more portable and easy to fold, further improves flexibility.

[0027] Please refer to Figs. 1-2 , conductive layer 14 includes first conductive layer 141 and second conductive layer 142, first conductive layer 141 is equipped with a plurality of first conductive wire 18, second conductive layer 142 is equipped with a plurality of second conductive wire 18, first conductive wire 18 is arranged respectively with second conductive wire 18 corresponding, and constitutes a plurality of conductive wire 18 groups;The both ends of conductive wire 18 group are located at first part 11 and third part 13 respectively.

[0028] In specific implementation: first conductive layer 141 is the upper conductive layer 14, and second conductive layer 142 is the lower conductive layer 14, the upper and lower conductive layer 14 is evenly arranged with the same number of conductive wire 18, and the same conductive wire 18 is wired at the same position of the upper conductive layer 14 and the lower conductive layer 14 simultaneously, to form a conductive wire 18 group, the conductive layer 14 forms a plurality of conductive wire 18 groups, and the both ends of the conductive wire 18 group are located at the first part 11 and the third part 13 of the FPC mainboard 1, the conductive layer 14 realizes the electrical connection of the main control board and the circuit, and the double-layer conductive layer 14 is favorable for reducing the impedance of the conductive wire 18, and improving the stability of electrical connection;In a specific embodiment, the upper conductive layer 14 and the lower conductive layer 14 are evenly distributed with 24 conductive wires 18, to form 24 conductive wire 18 groups, and are used for conducting the main control module and the wiring module of the intelligent valve positioner.

[0029] Please refer to Figs. 1-2 , FPC mainboard 1 is also provided with a plurality of conductive through holes 16, and the conductive through holes 16 are located at the first part 11 and the third part 13 respectively and are used for conducting the conductive wire 18 group.

[0030] In a specific implementation, the FPC mainboard 1 is further provided with a plurality of conductive vias 16, each of which is located at the end of each group of conductive wires 18, and any conductive via 16 is in conductive communication with the group of conductive wires 18; in a specific embodiment, the two ends of each of the 24 groups of conductive wires 18 are provided with conductive vias 16, the conductive vias 16 at the two ends of each group of conductive wires 18 have the same number, the numbers of the conductive vias 16 in the first part 11 and the third part 13 of the FPC mainboard 1 are 1 to 24, and the shape of the conductive via 16 numbered 1 is distinguished from that of the other conductive vias 16, the shape of the conductive via 16 numbered 1 is set as a square, and the shapes of the other conductive vias 16 are set as circles, which is conducive to distinguishing.

[0031] Please refer to Figs. 1-2 , the FPC mainboard 1 includes a first part 11, a second part 12 and a third part 13, the widths of the first part 11 and the third part 13 are the same, and the widths of the first part 11 and the third part 13 are greater than the width of the second part 12; the connection between the second part 12 and the first part 11 is provided with a trapezoidal chamfer 17, and the connection between the second part 12 and the third part 13 is provided with a trapezoidal chamfer 17.

[0032] In a specific implementation, the FPC mainboard 1 includes a first part 11, a second part 12 and a third part 13, the widths of the first part 11 and the third part 13 are the same, and the widths of the first part 11 and the third part 13 are greater than the width of the second part 12, which is conducive to setting the conductive vias 16 at the two ends of the group of conductive wires 18; the connection between the second part 12 and the first part 11 is provided with a trapezoidal chamfer 17, and the connection between the second part 12 and the third part 13 is provided with a trapezoidal chamfer 17; when the FPC mainboard 1 is subjected to tension, the connection between the second part 12 and the first part 11 and the third part 13 is prevented from being broken, and the stability is further improved.

[0033] Please refer to Figs. 1-2 , the FPC mainboard 1 includes a reinforcing plate 2, which is located above the first part 11 and the third part 13, the width of the reinforcing plate 2 corresponds to the widths of the first part 11 and the third part 13, and is fixedly connected with the first part 11 and the third part 13 respectively; the reinforcing plate 2 is further provided with a groove 21 for clamping the wire plate.

[0034] In specific implementation: the FPC mainboard 1 includes a reinforcing plate 2, the reinforcing plate 2 is in a T-shaped structure, and is oppositely arranged above the first part 11 and the third part 13, the width of the beam part of the reinforcing plate 2 corresponds to the width of the first part 11 and the third part 13; the reinforcing plate 2 is fixedly connected with the first part 11 and the third part 13 respectively, the reinforcing plate 2 provides support for the FPC mainboard 1, is conducive to the connection of the FPC mainboard 1 with the control mainboard and the flat cable board, and further improves the stability; the reinforcing plate 2 is also provided with a groove 21, the groove 21 is used for clamping connection with the flat cable board, so that the cooperation is more compact, and the connection of the FPC mainboard 1 with the flat cable board is more stable.

[0035] Please refer to Figs. 1-2 , the pin 3 is located above the first part 11, one end of the pin 3 penetrates through the reinforcing plate 2 and is electrically connected with the conductive via hole 16, and the other end is used for electrically connecting with the control mainboard. The socket 4 is located above the third part 13, one end of the socket 4 penetrates through the reinforcing plate 2 and is electrically connected with the conductive via hole 16, and the other end is used for electrically connecting with the flat cable board.

[0036] In specific implementation: the pin 3 is located above the first part 11, one end of the pin 3 penetrates through the reinforcing plate 2 and is electrically connected with the conductive via hole 16, and the other end is used for electrically connecting with the control mainboard. The socket 4 is located above the third part 13, one end of the socket 4 penetrates through the reinforcing plate 2 and is electrically connected with the conductive via hole 16, and the other end is used for electrically connecting with the flat cable board; in a specific embodiment, one end of the pin 3 is electrically connected with the conductive via hole 16 on the FPC mainboard 1 by welding, and the other end of the pin 3 is electrically connected with the control mainboard by welding; one end of the socket 4 is electrically connected with the conductive via hole 16 on the FPC mainboard 1 by welding, and the other end of the socket 4 is electrically connected with the input end of the flat cable board by insertion; the FPC mainboard 1 is electrically connected with the flat cable board in a detachable manner, which is conducive to the transportation and maintenance of the flat cable board and improves the flexibility.

[0037] Please refer to Figs. 1-2 , the FPC mainboard 1 further includes a protective film layer 15, the protective film layer 15 is located outside the first conductive layer 141 and the second conductive layer 142, and the width of the protective film layer 15 is greater than the width of the first conductive layer 141 and the second conductive layer 142.

[0038] In specific implementation: the FPC mainboard 1 further includes a protective film layer 15, the protective film layer 15 is located outside the first conductive layer 141 and the second conductive layer 142, the shape of the protective film layer 15 is similar to that of the conductive layer 14, and the width of the protective film layer 15 is greater than the width of the first conductive layer 141 and the second conductive layer 142, so as to avoid damage to the conductive layer 14.

[0039] The above merely preferred embodiments of the present application and are not intended to limit the patent scope of the present application, any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An FPC board characterized by comprising: The FPC mainboard comprises a first part, a second part and a third part, a trapezoidal chamfer is arranged at the connection between the second part and the first part, and a trapezoidal chamfer is arranged at the connection between the second part and the third part; the FPC mainboard comprises at least two conductive layers, and the conductive layers are used for conducting the control mainboard and the flat cable board; The reinforcing plate is arranged above the first part and the third part, respectively; The row of pins is arranged above the first part and is used for electrically connecting with the control mainboard; The socket is arranged above the third part and is used for detachably electrically connecting with the flat cable board.

2. The FPC board according to claim 1, characterized by, The conductive layer comprises a first conductive layer and a second conductive layer, the first conductive layer is provided with a plurality of first conductive lines, the second conductive layer is provided with a plurality of second conductive lines, the first conductive lines are correspondingly arranged with the second conductive lines, respectively, and constitute a plurality of conductive line groups.

3. The FPC board according to claim 2, characterized by, The two ends of the conductive line group are arranged on the first part and the third part, respectively.

4. The FPC board according to claim 3, characterized by, The FPC mainboard is further provided with a plurality of conductive through holes, the conductive through holes are arranged on the first part and the third part, respectively, and are used for conducting the conductive line group.

5. The FPC board according to claim 1, characterized by, The widths of the first part and the third part are the same, and the widths of the first part and the third part are greater than the width of the second part.

6. The FPC board according to claim 5, characterized by, The widths of the reinforcing plates correspond to the widths of the first part and the third part, and are fixedly connected with the first part and the third part, respectively.

7. The FPC board according to claim 6, characterized by The reinforcing plate is further provided with a groove, and the groove is used for clamping the flat cable board.

8. The FPC board according to claim 4, characterized by, One end of the row of pins penetrates through the reinforcing plate and is electrically connected with the conductive through hole, and the other end is used for electrically connecting with the control mainboard.

9. The FPC board according to claim 4, characterized by, One end of the socket penetrates through the reinforcing plate and is electrically connected with the conductive through hole, and the other end is used for detachably electrically connecting with the flat cable board.

10. The FPC board according to claim 2, characterized by, The FPC mainboard further comprises a covering protective film layer, the covering protective film layer is arranged outside the first conductive layer and the second conductive layer, and the width of the covering protective film layer is greater than the widths of the first conductive layer and the second conductive layer.

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