Soft circuit board assembly

Abstract

The utility model relates to a soft circuit board assembly which comprises a soft substrate and a soft circuit board on the soft substrate, one end of the soft circuit board is provided with an output plug connected with a sensor terminal button, and the other end of the soft circuit board is provided with an input plug connected with a sensor sensitive element. The soft circuit board is provided with a first bonding pad used for being connected with a metal shell of the pressure sensor. According to the soft circuit board assembly designed by the utility model, the first bonding pad is arranged on the soft circuit board, so that the metal shell of the pressure sensor can be directly connected to the first bonding pad, the risk of poor contact is reduced, and the reliability is improved.

Description

Technical Field

[0001] The utility model specifically relates to a flexible printed circuit board assembly. Background Art

[0002] The Chinese utility model patent document with the publication number of "CN202374561U" discloses a flexible printed circuit board assembly, which mainly consists of a flexible substrate, components distributed on the flexible substrate, and a flexible printed circuit board. This flexible printed circuit board assembly is used to provide a power supply and signal output channel for a pressure sensor.

[0003] The above flexible printed circuit board assembly has the following defects:

[0004] To ensure the accuracy of the pressure sensor and maintain its normal operation, after the flexible printed circuit board assembly is installed in the working scenario, it needs to be connected to the metal shell of the pressure sensor. Then, there are no dedicated components on the flexible printed circuit board assembly for connecting to the metal shell of the pressure sensor. Therefore, it is necessary to additionally connect a protruding copper pole to the metal shell inside the pressure sensor to connect with this flexible printed circuit board assembly. However, this method is extremely prone to poor contact, and the connection is not stable. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a flexible printed circuit board assembly aiming at the deficiencies of the above-mentioned prior art. By setting a first pad on the flexible printed circuit board, the metal shell inside the pressure sensor can be directly connected to the first pad, reducing the risk of poor contact and improving reliability.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a flexible printed circuit board assembly, including a flexible substrate and a flexible printed circuit board thereon. One end of the flexible printed circuit board is provided with an output plug connected to a sensor terminal, and the other end of the flexible printed circuit board is provided with an input plug connected to a sensor sensitive element. Its characteristics are: a first pad is provided on the flexible printed circuit board.

[0007] By adopting the above technical solution, by setting a first pad on the flexible printed circuit board, the first pad can be directly connected to the metal shell inside the pressure sensor to ensure the normal operation of the pressure sensor, abandoning the method of additionally connecting a protruding copper pole to the metal shell of the pressure sensor for connection, reducing the risk of poor contact and improving reliability. Since the flexible printed circuit board assembly already has a first pad built-in, there is no need to perform additional wiring operations on the pressure sensor shell during installation, simplifying the installation process. Among them, the metal shell of the pressure sensor refers to a conductive component installed inside the insulating shell of the pressure sensor. When the flexible printed circuit board assembly is connected to this shell through the first pad, on the one hand, it can prevent static electricity, and on the other hand, it can improve the sensor accuracy.

[0008] The above-mentioned flexible circuit board assembly can be further configured as follows: an outer ring body is provided on the outer periphery of the other end of the flexible substrate, and the first pad is mounted on the outer ring body and integrally formed with the flexible circuit board.

[0009] Adopting the above technical solution, the outer ring body, as a reinforcement structure on the outer periphery of the flexible circuit board, not only enhances the overall rigidity and stability of the flexible circuit board, but also provides physical protection for the first pad mounted thereon, avoiding direct impact or wear, and ensuring the long-term reliability of the pressure sensor. In addition, integrating the first pad into the outer ring body simplifies the operation process and improves production efficiency. And it acts together with the outer ring body to form electromagnetic shielding, reducing interference and ensuring the accuracy and stability of the sensor signal.

[0010] The above-mentioned flexible circuit board assembly can be further configured as follows: a plurality of groups of first pads are provided on the outer ring body, and the plurality of groups of first pads are all mounted on the outer ring body and are arranged at equal intervals in the circumferential direction of the outer ring body.

[0011] Adopting the above technical solution, the plurality of groups of first pads refer to the first pads with the number of 1 group, or 2 groups, or 3 groups, and so on. The first pads with 2 groups or more are arranged at intervals of each other. These first pads are all mounted on the outer ring body and are arranged at equal intervals in the circumferential direction of the outer ring body, which not only ensures the reliability and effectiveness of the connection between the flexible circuit board assembly and the metal shell in the pressure sensor, but also improves the overall working stability through multi-point connection to the shell.

[0012] The above-mentioned flexible circuit board assembly can be further configured as follows: the flexible circuit board includes a strip-shaped body, a group of second pads are respectively connected to both ends of the strip-shaped body, the widths of the two groups of second pads are both greater than the width of the strip-shaped body, and the outer ring body is provided on one group of second pads and surrounds the outer edge of the second pad.

[0013] Adopting the above technical solution is beneficial to the compact layout of the flexible circuit board assembly, saves space, simplifies the assembly process, and improves production efficiency.

[0014] The above-mentioned flexible circuit board assembly can be further configured as follows: both ends of the outer ring body extend to both sides of the strip-shaped body, and there is a gap between the end of the strip-shaped body and the outer ring body.

[0015] Adopting the above technical solution, a gap is added to avoid tearing between the strip-shaped body and the outer ring body.

[0016] The above-mentioned flexible circuit board assembly can be further configured as follows: fillets are provided on both sides of the connection between the second pad and the strip-shaped body and at the connection between the second pad and the outer ring body.

[0017] With the above technical solution, chamfered corners are provided to further prevent tearing at each connection.

[0018] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the first embodiment of the present utility model;

[0020] Figure 2 It is a partially enlarged schematic diagram of the first embodiment of the present utility model;

[0021] Figure 3 It is a circuit schematic diagram of the first to fifth embodiments of the present utility model;

[0022] Figure 4 It is a schematic diagram of the second embodiment of the present utility model;

[0023] Figure 5 It is a schematic diagram of the third embodiment of the present utility model;

[0024] Figure 6 It is a schematic diagram of the fourth embodiment of the present utility model;

[0025] Figure 7 It is a schematic diagram of the fifth embodiment of the present utility model.

[0026] Label annotation: strip 1, second pad 2, outer ring 3, first pad 4, chamfered corner 5. Detailed Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1: As Figure 1 , 2 shown, a flexible circuit board assembly includes a flexible substrate and a flexible circuit board thereon.

[0029] The flexible circuit board is integrated with a circuit (the circuit is as Figure 3As shown in the figure, one end of the flexible circuit board is provided with an output plug connected to the sensor terminal, and the other end of the flexible circuit board is provided with an input plug connected to the sensor sensing element. The flexible circuit board includes a strip-shaped body 1, and a group of second pads 2 are respectively connected to both ends of the strip-shaped body 1. The widths of the two groups of second pads 2 are both greater than the width of the strip-shaped body 1. An outer ring body 3 is provided on the outer periphery of one group of second pads 2, and a group of first pads 4 are provided on the outer ring body 3.

[0030] By providing the first pads 4 on the flexible circuit board, the first pads 4 can be directly connected to the metal shell inside the pressure sensor to realize signal transmission, ensuring that the pressure sensor can work normally. It abandons the method of additionally connecting protruding copper poles to the metal shell of the pressure sensor for connection, reduces the risk of poor contact, and improves reliability. Since the first pads 4 have been built into the flexible circuit board assembly, there is no need to perform additional wiring operations on the pressure sensor shell during installation, simplifying the installation process. Among them, the metal shell of the pressure sensor refers to a conductive component installed inside the insulating shell of the pressure sensor. When the flexible circuit board assembly is connected to this shell through the first pads 4, on the one hand, it can prevent static electricity, and on the other hand, it can improve the sensor accuracy.

[0031] Furthermore, the structural design of "the two groups of second pads 2 and the strip-shaped body 1" is conducive to the compact layout of the flexible circuit board assembly, saving space, and at the same time simplifying the assembly process and improving production efficiency.

[0032] Both ends of the outer ring body 3 extend to both sides of the strip-shaped body 1, and there is a gap between the end of the strip-shaped body 1 and the outer ring body 3. Adding the gap can prevent tearing between the strip-shaped body 1 and the outer ring body 3.

[0033] Rounded corners 5 are provided on both sides of the connection between the second pads 2 and the strip-shaped body 1 and at the connection between the second pads 2 and the outer ring body 3. Setting the rounded corners 5 can further prevent tearing at each connection.

[0034] Embodiment 2: As Figure 4 shown in the flexible circuit board assembly. Compared with Embodiment 1, the difference between the two lies only in the number of the first pads 4. In this Embodiment 2, the number of the first pads 4 is 2.

[0035] Embodiment 3: As Figure 5 shown in the flexible circuit board assembly. Compared with Embodiment 1, the difference between the two lies only in the number of the first pads 4. In this Embodiment 2, the number of the first pads 4 is 4.

[0036] Embodiment 4: As Figure 6 shown in the flexible circuit board assembly. Compared with Embodiment 1, the difference between the two lies only in the number of the first pads 4. In this Embodiment 2, the number of the first pads 4 is 7.

[0037] Embodiment 5: AsFigure 7 The flexible printed circuit board assembly shown, compared with the first embodiment, the only difference between the two lies in the number of the first pads 4. In the second embodiment, the number of the first pads 4 is 23.

[0038] After being connected to the sensor in all the above embodiments, the change value of the external pressure acting on the ceramic core can be converted into a corresponding voltage signal and output through the IC.

Claims

1. Flexible circuit board assembly, including a flexible substrate and a flexible circuit board thereon. One end of the flexible circuit board is provided with an output plug connected to a sensor terminal, and the other end of the flexible circuit board is provided with an input plug connected to a sensor sensitive element, characterized in that: The flexible circuit board is provided with a first pad. The flexible substrate is provided with an outer ring body on the outer periphery of the other end of the flexible circuit board. The first pad is mounted on the outer ring body and the first pad is integrally formed with the flexible circuit board. The outer ring body is provided with a plurality of groups of first pads. The plurality of groups of first pads are all mounted on the outer ring body and are arranged at equal intervals in sequence along the circumferential direction of the outer ring body. The flexible circuit board includes a strip-shaped body. A group of second pads are respectively connected to both ends of the strip-shaped body. The widths of the two groups of second pads are both greater than the width of the strip-shaped body. The outer ring body is disposed on a group of second pads and surrounds the outer edge of the second pad.

2. The flexible printed circuit board assembly according to claim 1, wherein: Both ends of the outer ring body extend to both sides of the strip-shaped body, and there is a gap between the strip-shaped body and the end of the outer ring body.

3. The flexible printed circuit board assembly according to claim 2, wherein: Fillet rounds are provided on both sides of the connection between the second pad and the strip-shaped body and at the connection between the second pad and the outer ring body.

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