Novel flexible PCB for sensor

Abstract

The utility model discloses a novel flexible PCB for a sensor, relates to the technical field of flexible PCB structures, and aims to solve the problem that the use effect of the flexible PCB is affected as a connecting wire is easy to damage when the bending part of the conventional flexible PCB is extruded. A mounting groove is formed in the elastic body, strain gauges are mounted at the two ends of the elastic body, a PCB is mounted on one side of the elastic body and comprises a first connecting device, a second connecting device, a third connecting device, a fourth connecting device and a connecting circuit, the first connecting device is electrically connected with the second connecting device through the connecting circuit, and the second connecting device is electrically connected with the fourth connecting device through the connecting circuit. The second connecting device and the third connecting device are electrically connected through a connecting circuit, the third connecting device and the fourth connecting device are electrically connected through a connecting circuit, and one end of the connecting circuit is provided with a bent end. And the effect that the flexible PCB is convenient to install is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flexible PCB board structure technical field especially a novel flexible PCB board for sensor. BACKGROUND

[0002] ‌Flexible PCB circuit board (FPC) is a kind of printed circuit board with polyimide or polyester film as base material, with high reliability and excellent flexibility, flexible PCB circuit board needs to pass through elastomer outside surface when assembling, so that when silica gel is protected on PCB circuit board, it will cause the effect of coating to be bad, easily make sensor size change, thereby influence the use effect of flexible PCB circuit board.

[0003] Through the retrieval, the authorization announcement No.CN211702523U discloses a kind of flexible printed PCB circuit board, including signal part, connecting strip and plug-in part;The signal part is connected with plug-in part by connecting strip;Reinforcing plate is equipped on the plug-in part;The connecting strip includes bending part and connecting part;One end of the connecting part is connected with signal part;One end of the bending part is connected with plug-in part;Bending line is equipped between the other end of the connecting part and the other end of the bending part;The other end of the connecting part is equipped with first adhesive layer at bending line place.The utility model can strengthen the strength of plug-in part by setting reinforcing plate on plug-in part, to facilitate the connection with external equipment;In addition, by setting bending line between connecting part and bending part, it is convenient for connecting strip to be bent and handled, after bending, by sticking plug-in part on first adhesive layer, the shape of connecting strip bending can be fixed.

[0004] But the existing flexible PCB bending, when being extruded, easily cause damage to connecting line, so it will affect the use effect of flexible PCB, therefore, there is an urgent need for a kind of novel flexible PCB board for sensor to solve these problems in the market. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of novel flexible PCB board for sensor to solve the problem that existing flexible PCB bending is easily damaged to connecting line when being extruded, so it will affect the use effect of flexible PCB in the above background technique.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a novel flexible PCB board for sensor, including elastomer, the inside of elastomer is provided with mounting groove, both ends of elastomer are installed with strain gauge, one side of elastomer is installed with PCB board, PCB board includes connecting device one, connecting device two, connecting device three, connecting device four and connecting circuit, connecting device one and connecting device two are electrically connected through connecting circuit, connecting device two and connecting device three are electrically connected through connecting circuit, connecting device three and connecting device four are electrically connected through connecting circuit, one end of connecting circuit is provided with the bending end.

[0008] Through the above technical scheme, the PCB board can be conveniently mounted with the elastomer.

[0009] Further, the connecting device one and the connecting device four include a substrate, a connecting copper plate, a protective film and a stainless steel plate, the connecting copper plate is arranged above the substrate, the protective film is arranged above the connecting copper plate, and the stainless steel plate is arranged below the substrate.

[0010] Through the above technical scheme, the connecting device one and the connecting device four have good protection effect through the protective film.

[0011] Further, the substrate and the connecting copper plate are glued and connected through a second adhesive layer, the substrate and the stainless steel plate are glued and connected through a first adhesive layer, and the connecting copper plate and the protective film are glued and connected through a third adhesive layer.

[0012] Through the above technical scheme, the connecting device one and the connecting device can be conveniently spliced and mounted.

[0013] Further, the bending end is arranged corresponding to the mounting groove.

[0014] Through the above technical scheme, the PCB board can be mounted with the elastomer, so as to protect the PCB board.

[0015] Further, the connecting circuit includes a copper foil circuit, a first protective film and a second protective film, the first protective film is arranged above the copper foil circuit, and the second protective film is arranged below the copper foil circuit.

[0016] Through the above technical scheme, the copper foil circuit can be conveniently protected.

[0017] Further, the copper foil circuit and the first protective film are glued and connected through a fourth adhesive layer, and the copper foil circuit and the second protective film are glued and connected through a fifth adhesive layer.

[0018] Through the above technical scheme, the connecting circuit can be conveniently mounted and protected.

[0019] Further, one end of the connecting device three and the connecting device four is provided with a connecting end, one end of the connecting end is provided with a connecting seat.

[0020] By adopting the above technical scheme, the connecting device three and the connecting device four can be well connected.

[0021] Compared with the prior art, the utility model has the advantages of:

[0022] (1) the utility model discloses a PCB board is set up the inside of the installation recess of the elastic body of the bending end installation, can make PCB board and the close installation between the elastic body, then installs the connecting device one, connecting device two, connecting device three and connecting device four and strain gauge, can improve the installation effect, avoids the PCB board when bending, easy to cause the damage of PCB board condition;

[0023] (2) the utility model discloses when the bending end is located in the inside of the installation recess, and the connecting circuit is also arranged along the installation recess, which can improve the installation effect, avoid the PCB board from the sensor patch face strain area, which may cause the PCB board to be damaged, and the PCB board is closely attached to the elastic body during the gluing, which can make the gluing effect better, so as to better protect the PCB board. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall front view of the utility model;

[0025] Figure 2 It is the PCB board structure diagram of the utility model;

[0026] Figure 3 It is the connecting device one and the connecting device four sectional view of the utility model;

[0027] Figure 4 It is the connecting circuit sectional view of the utility model.

[0028] In the drawing: 1, elastic body;101, installation recess;2, strain gauge;3, PCB board;4, connecting device one;5, base plate;6, connecting copper plate;7, protective film;8, stainless steel plate;9, adhesion layer one;10, adhesion layer two;11, adhesion layer three;12, connecting device two;13, connecting circuit;1301, bending end;14, copper foil circuit;15, adhesion layer four;16, protective film one;17, adhesion layer five;18, protective film two;19, connecting device three;20, connecting device four;21, connecting end;22, connecting seat. DETAILED DESCRIPTION

[0029] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments.

[0030] Please refer to Figures 1-4 The utility model provides an embodiment: a novel flexible PCB board for sensor, including elastomer 1, the inside of elastomer 1 is provided with installation recess 101, both ends of elastomer 1 are installed with strain gauge 2, the side of elastomer 1 is installed with PCB board 3, PCB board 3 includes connecting device one 4, connecting device two 12, connecting device three 19, connecting device four 20 and connecting circuit 13, connecting device one 4 and connecting device two 12 are electrically connected through connecting circuit 13, connecting device two 12 and connecting device three 19 are electrically connected through connecting circuit 13, connecting device three 19 and connecting device four 20 are electrically connected through connecting circuit 13, one end of connecting circuit 13 is provided with bending end 1301, bending end 1301 is correspondingly set with installation recess 101, connecting device one 4 and connecting device four 20 include base plate 5, connecting copper plate 6, protection film 7 and stainless steel plate 8, the top of base plate 5 is provided with connecting copper plate 6, the top of connecting copper plate 6 is provided with protection film 7, the bottom of base plate 5 is provided with stainless steel plate 8, base plate 5 and connecting copper plate 6 are connected through adhesive layer two 10, base plate 5 and stainless steel plate 8 are connected through adhesive layer one 9, connecting copper plate 6 and protection film 7 are connected through adhesive layer three 11, wherein the bending end 1301 set through one end of connecting circuit 13 and the installation recess 101 correspondingly set in the inside of elastomer 1, can make PCB board 3 and elastomer 1 between the fit installation, like this when carrying out gluing will not influence the volume of sensor, and the bending end 1301 set simultaneously can avoid the damage of connecting circuit 13 when installing bending, it needs to be explained that, in order to save the length, highlight the innovation factor of this patent, such as the specific working principle and working process of flexible PCB board, do not repeat in this patent.

[0031] Please refer to Figure 4The connecting circuit 13 comprises a copper foil circuit 14, a protective film I 16 and a protective film II 18, the protective film I 16 is arranged above the copper foil circuit 14, the protective film II 18 is arranged below the copper foil circuit 14, the copper foil circuit 14 and the protective film I 16 are adhesively connected through an adhesive layer IV 15, the copper foil circuit 14 and the protective film II 18 are adhesively connected through an adhesive layer V 17, one end of the connecting device III 19 and the connecting device IV 20 is provided with a connecting end 21, one end of the connecting end 21 is provided with a connecting seat 22, wherein the protective film I 16 and the protective film II 18 can conveniently protect the connecting circuit 13, and the connecting device III 19 and the connecting device IV 20 can conveniently install and connect the PCB 3.

[0032] Working principle: in use, the bent end 1301 of the PCB 3 is installed into the installation groove 101 of the elastic body 1, so that the PCB 3 and the elastic body 1 are installed in close contact, then the connecting device I 4, the connecting device II 12, the connecting device III 19 and the connecting device IV 20 are installed with the strain gauge 2, so that the installation effect is improved, the PCB 3 is prevented from being damaged when being bent, when the bent end 1301 is located in the installation groove 101, the connecting circuit 13 is arranged along the installation groove 101, so that the installation effect is improved, the PCB 3 is prevented from being damaged when passing through the sensor patch surface strain area, the PCB 3 and the elastic body 1 are closely attached when being glued, so that the gluing effect is better, and the PCB 3 is better protected.

[0033] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A new flexible PCB board for sensors comprising an elastomer (1), characterized by: The inside of the elastic body (1) is provided with a mounting groove (101), both ends of the elastic body (1) are provided with strain gauges (2), one side of the elastic body (1) is provided with a PCB board (3), the PCB board (3) comprises a connecting device one (4), a connecting device two (12), a connecting device three (19), a connecting device four (20) and a connecting circuit (13), the connecting device one (4) and the connecting device two (12) are electrically connected through the connecting circuit (13), the connecting device two (12) and the connecting device three (19) are electrically connected through the connecting circuit (13), the connecting device three (19) and the connecting device four (20) are electrically connected through the connecting circuit (13), one end of the connecting circuit (13) is provided with a bending end (1301).

2. A novel flexible PCB board for sensors as claimed in claim 1, wherein: The connecting device one (4) and the connecting device four (20) comprise a substrate (5), a connecting copper plate (6), a protective film (7) and a stainless steel plate (8), the connecting copper plate (6) is arranged above the substrate (5), the protective film (7) is arranged above the connecting copper plate (6), the stainless steel plate (8) is arranged below the substrate (5).

3. A novel flexible PCB board for sensors as claimed in claim 2, wherein: The substrate (5) and the connecting copper plate (6) are adhesively connected through an adhesive layer two (10), the substrate (5) and the stainless steel plate (8) are adhesively connected through an adhesive layer one (9), the connecting copper plate (6) and the protective film (7) are adhesively connected through an adhesive layer three (11).

4. A novel flexible PCB board for sensors as claimed in claim 3, wherein: The bending end (1301) is arranged corresponding to the mounting groove (101).

5. A novel flexible PCB board for sensors as claimed in claim 4, wherein: The connecting circuit (13) comprises a copper foil circuit (14), a protective film one (16) and a protective film two (18), the protective film one (16) is arranged above the copper foil circuit (14), the protective film two (18) is arranged below the copper foil circuit (14).

6. A novel flexible PCB board for sensors as claimed in claim 5, wherein: The copper foil circuit (14) and the protective film one (16) are adhesively connected through an adhesive layer four (15), the copper foil circuit (14) and the protective film two (18) are adhesively connected through an adhesive layer five (17).

7. A novel flexible PCB board for sensors as claimed in claim 6, wherein: One end of the connecting device three (19) and the connecting device four (20) is provided with a connecting end (21), one end of the connecting end (21) is provided with a connecting seat (22).

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