Sensor with integrated flexible PCB (printed circuit board)
By designing through holes on the elastomer, the flexible PCB circuit board is integrated with the front and back of the elastomer, the appearance changes and cost increase caused by traditional assembly methods are solved, and the aesthetics and cost-effectiveness are improved.
Patent Information
- Application Number
- CN202422116013.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-30
AI Technical Summary
When assembling traditional flexible PCB boards and elastomers, they need to pass through the outside of the elastomer, resulting in changes in the sensor's appearance, affecting their aesthetics and increasing costs.
Design a vertical through hole on the elastomer to allow the integrated flexible PCB circuit board to pass from the front to the back of the elastomer, electrically connect with the strain gauge to avoid passing from the outside.
Keep the appearance and shape of the sensor unchanged, reduce material and labor costs, and improve aesthetics.
Smart Images
Figure CN223138689U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sensors, and particularly relates to a sensor with an integrated flexible PCB circuit board. Background Art
[0002] In traditional technologies, when a flexible PCB board is assembled with an elastomer, it needs to pass through the outer surface of the elastomer. Since the PCB board itself has a thickness, and in order to protect the compensation lines on the PCB board, silicone is applied on the surface of the PCB board for protection. This will cause the overall shape and size of the sensor to change, and even affect the assembly and use by the client. At the same time, adding side gluing to the product not only affects the aesthetics of the product, but also increases the material production cost and labor cost of the product.
[0003] Therefore, there is an urgent need to propose a sensor with an integrated flexible PCB circuit board. Summary of the Utility Model
[0004] To solve the defects existing in the prior art, the utility model provides a sensor with an integrated flexible PCB circuit board.
[0005] To solve the above technical problems, the utility model provides the following technical solutions:
[0006] The utility model provides a sensor with an integrated flexible PCB circuit board, including an elastomer, a strain gauge, and an integrated flexible PCB circuit board. The elastomer is provided with first through holes for deformation on any two opposite side surfaces, and the elastomer is provided with a second through hole vertically penetrating the upper surface and the lower surface. The strain gauges are arranged on the upper surface and the lower surface of the elastomer. The integrated flexible PCB circuit board passes through the second through hole and is electrically connected to the strain gauges. One end of the integrated flexible PCB circuit board is arranged on the upper surface of the elastomer, and the other end of the integrated flexible PCB circuit board is arranged on the lower surface of the elastomer.
[0007] Preferably, the integrated flexible PCB circuit board includes at least one upper circuit unit, at least one lower circuit unit, and a connecting portion. The upper circuit unit and the lower circuit unit are arranged at both ends in the length direction of the integrated flexible PCB circuit board. The upper circuit unit is arranged on the upper surface of the elastomer, and the lower circuit unit is arranged on the lower surface of the elastomer. Any two adjacent upper circuit units, any two adjacent lower circuit units, and adjacent upper and lower circuit units are connected into one body through the connecting portion.
[0008] Preferably, any two adjacent connecting portions are parallel in the length direction of the integrated flexible PCB circuit board and are staggered in the direction perpendicular to the length direction of the integrated flexible PCB circuit board.
[0009] Preferably, a positioning notch is provided on one side edge of the upper circuit unit adjacent to the lower circuit unit, which is close to the lower circuit unit, and / or on one side edge of the lower circuit unit adjacent to the upper circuit unit, which is close to the upper circuit unit.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] In the utility model, by designing the second through hole, the integrated flexible PCB circuit board passes from the front side of the elastomer to the back side of the elastomer, realizing the assembly of the integrated flexible PCB circuit board with the front and back sides of the elastomer. The integrated flexible PCB circuit board does not need to pass from the outside of the elastomer. The design of the integrated flexible PCB circuit board will not change the original appearance and external dimensions of the sensor, so it will not affect the installation and use of the product. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the front side of a sensor with an integrated flexible PCB circuit board according to the utility model;
[0013] Figure 2 is a schematic structural diagram of the back side of a sensor with an integrated flexible PCB circuit board according to the utility model;
[0014] Figure 3 is a schematic structural diagram of the front side of a sensor with an integrated flexible PCB circuit board according to the utility model;
[0015] Figure 4 is a schematic structural diagram of the integrated flexible PCB circuit board in the utility model. Detailed Embodiments
[0016] The following describes the preferred embodiments of the utility model with reference to the drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model.
[0017] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the drawings of the specification Figure 1 which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.
[0018] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0019] As Figures 1 to 4 shown, this embodiment provides a sensor with an integrated flexible PCB circuit board, including an elastomer 1, a strain gauge 2, and an integrated flexible PCB circuit board 3. On the two opposite side surfaces of the elastomer 1 in the front and back directions, there are first through holes 11 for deformation, and on the elastomer 1, there is a second through hole 12 vertically penetrating the upper surface and the lower surface of the elastomer. The strain gauge 2 is disposed on the upper surface and the lower surface of the elastomer 1.
[0020] In this embodiment, the integrated flexible PCB circuit board 3 includes two upper circuit units 31, two lower circuit units 32, and a connecting portion 33. The upper circuit units 31 and the lower circuit units 32 are disposed at both ends in the length direction of the integrated flexible PCB circuit board. The upper circuit units 31 are disposed on the upper surface of the elastomer 1, and the lower circuit units 32 are disposed on the lower surface of the elastomer 1. Any two adjacent upper circuit units 31, any two adjacent lower circuit units 32, and the adjacent upper circuit unit 31 and the lower circuit unit 32 are connected into one body through the connecting portion 33. After the integrated flexible PCB circuit board 3 passes through the second through hole 12, the two upper circuit units 31 and the two lower circuit units 32 are respectively electrically connected to the strain gauge 2.
[0021] Specifically, two adjacent connecting portions 33 are parallel in the length direction of the integrated flexible PCB circuit board 3 and are staggered in the direction perpendicular to the length direction of the integrated flexible PCB circuit board 3, which is convenient for the distribution connection and soldering of wires.
[0022] Specifically, on the upper circuit unit 31 adjacent to the lower circuit unit 32, there is a positioning notch 34 on the side close to the lower circuit unit 32. The positioning notch 34 is provided with an arc groove. When the integrated flexible PCB circuit board passes through the second through hole, the arc groove just adheres to the edge of the second through hole.
[0023] The working principle of this embodiment will be further described below:
[0024] By designing the second through-hole, the integrated flexible PCB board passes from the front side of the elastomer to the back side of the elastomer, realizing the assembly of the integrated flexible PCB board with the front and back sides of the elastomer. The integrated flexible PCB board does not need to pass through the outside of the elastomer, and the design of the integrated flexible PCB board will not change the original appearance and shape size of the sensor, so it will not affect the installation and use of the product.
[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A sensor with an integrated flexible PCB circuit board, characterized in that, It includes an elastomer (1), a strain gauge (2), and an integrated flexible PCB circuit board (3). On any two opposite sides of the elastomer (1), there are first through holes (11) for deformation. On the elastomer (1), there are second through holes (12) vertically penetrating the upper surface and the lower surface of the elastomer. The strain gauge (2) is arranged on the upper surface and the lower surface of the elastomer (1). After passing through the second through holes (12), the integrated flexible PCB circuit board (3) is electrically connected to the strain gauge (2). One end of the integrated flexible PCB circuit board (3) is arranged on the upper surface of the elastomer (1), and the other end of the integrated flexible PCB circuit board (3) is arranged on the lower surface of the elastomer (1).
2. The sensor with an integrated flexible PCB circuit board according to claim 1, characterized in that, The integrated flexible PCB circuit board (3) includes at least one upper circuit unit (31), at least one lower circuit unit (32), and a connecting part (33). The upper circuit unit (31) and the lower circuit unit (32) are arranged at both ends of the integrated flexible PCB circuit board in the length direction. The upper circuit unit (31) is arranged on the upper surface of the elastomer (1), and the lower circuit unit (32) is arranged on the lower surface of the elastomer (1). Any two adjacent upper circuit units (31), any two adjacent lower circuit units (32), and the adjacent upper circuit unit (31) and lower circuit unit (32) are connected into one body through the connecting part (33).
3. The sensor with an integrated flexible PCB circuit board according to claim 2, characterized in that, Any two adjacent connecting parts (33) are parallel in the length direction of the integrated flexible PCB circuit board (3) and are staggeredly distributed in the direction perpendicular to the length direction of the integrated flexible PCB circuit board (3).
4. The sensor with an integrated flexible PCB circuit board according to claim 2, characterized in that, On the side edge close to the lower circuit unit (32) of the upper circuit unit (31) adjacent to the lower circuit unit (32) and / or on the side edge close to the upper circuit unit (31) of the lower circuit unit (32) adjacent to the upper circuit unit (31), there are positioning notches (34).