Shielding cover assembly detection device and electronic apparatus

Abstract

The disclosure provides provide a shielding cover assembly detection device and an electronic apparatus. The shielding cover assembly detection device is suitable for a base and a shielding cover installed on the base, and comprises a plurality of multiple membrane switches and a detection circuit. The membrane switches are configured to be disposed on the base and pressed by the shielding cover. The detection circuit includes a plurality of detection terminals configured to be connected to the membrane switches, respectively. The detection circuit is configured to determine whether the shielding cover presses against the membrane switches based on the electrical potentials of the detection terminals.

Description

[Technical Field]

[0001] This invention relates to a detection device and an electronic device, and more particularly to a shielding cover assembly detection device and an electronic device. [Previous Technology]

[0002] In the manufacture of electronic equipment, shielding covers are commonly used to protect internal components from external electromagnetic interference. However, the correct installation of the shielding cover is crucial to the function and performance of the equipment. If the shielding cover is not fully installed, it may lead to a reduction in electromagnetic shielding effectiveness and cause short circuits, thereby affecting the stable operation of the equipment. In the prior art, the installation of shielding covers mostly relies on manual inspection, which is prone to errors and inefficient. [Summary of the Invention]

[0003] In view of the above, the present invention provides a shielding cover assembly testing device and an electronic device.

[0004] A shield assembly detection device according to an embodiment of the present invention is applicable to a base and a shield mounted on the base, and includes a plurality of membrane switches and a detection circuit. The plurality of membrane switches are disposed on the base and are pressed against by the shield. The detection circuit has a plurality of detection terminals, wherein the plurality of detection terminals are respectively used to electrically connect the plurality of membrane switches, and the detection circuit is used to determine whether the shield presses against the plurality of membrane switches based on the plurality of potentials of the plurality of detection terminals.

[0005] An electronic device according to an embodiment of the present invention includes a base, a shielding cover, a plurality of membrane switches, and a detection circuit. The shielding cover is mounted on the base. The plurality of membrane switches are disposed on the base and are pressed against by the shielding cover. The detection circuit has a plurality of detection terminals, wherein the plurality of detection terminals are respectively used to electrically connect the plurality of membrane switches, and the detection circuit is used to determine whether the shielding cover presses against the plurality of membrane switches based on the plurality of potentials of the plurality of detection terminals.

[0006] With the above structure, the shielding cover assembly testing device and electronic equipment disclosed in this case can effectively detect whether the shielding cover is correctly installed on the base. The structure is simple and the detection accuracy is high, which can avoid errors caused by manual inspection and thus improve the assembly yield.

[0007] The above description of the disclosure and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention.

Implementation Method

[0008] The detailed features and advantages of the present invention are described below in the embodiments. The content is sufficient to enable anyone skilled in the art to understand the technical content of the present invention and implement it accordingly. Furthermore, based on the content disclosed in this specification, the scope of the patent application, and the drawings, anyone skilled in the art can easily understand the relevant objectives and advantages of the present invention. The following embodiments further illustrate the viewpoints of the present invention, but are not intended to limit the scope of the present invention in any way.

[0009] Please refer to Figures 1 and 2. Figure 1 is a side view of an electronic device including a shielding cover assembly detection device according to one embodiment of the present disclosure, and Figure 2 is a side view of an electronic device including a shielding cover assembly detection device according to another embodiment of the present disclosure. As shown in Figures 1 and 2, the electronic device 1 or 1' includes a base 10, a shielding cover 20, and a shielding cover assembly detection device 30. The base 10 is, for example, a circuit board. The shielding cover 20 is used to isolate electromagnetic noise, protect the circuit inside the cover from external signals, or prevent signals generated by the electronic components of the circuit itself from interfering with other devices.

[0010] The shield assembly detection device 30 is applicable to a base 10 and a shield 20 mounted on the base 10, and includes a plurality of membrane switches 301 and a detection circuit 302. The plurality of membrane switches 301 are disposed on the base 10 and pressed against by the shield 20. Specifically, the number of membrane switches 301 may depend on the number of edges on the top surface of the shield 20. Each edge of the base 10 corresponding to the area of ​​the shield 20 may be provided with one or more membrane switches 301. The detection circuit 302 has a plurality of detection terminals 3021, wherein the plurality of detection terminals 3021 are respectively electrically connected to the corresponding plurality of membrane switches 301. The detection circuit 302 is used to determine whether the shield 20 presses against the plurality of membrane switches 301 based on the plurality of potentials of the plurality of detection terminals 3021. Specifically, when the shield 20 is pressed, the corresponding detection terminal 3021 has a first potential; when the shield 20 is not pressed, the corresponding detection terminal 3021 has a second potential different from the first potential. In one embodiment, the shield assembly detection device 30 further includes a prompting element (e.g., a light-emitting diode, a speaker, etc.) electrically connected to the detection circuit. When the potential of any of the plurality of detection terminals 3021 is a second potential, the detection circuit 302 can output a prompting signal through the prompting element.

[0011] In the embodiment shown in FIG. 1, the detection circuit 302 is separated from the base 10. In this embodiment, the base 10 may be provided with multiple test points electrically connected to the membrane switch 301. The detection end 3021 of the detection circuit 302 can be a probe, controlled to electrically contact the test points for detection. The detection circuit 302 can be implemented using existing detection fixtures or improved existing detection fixtures, thus having a lower manufacturing cost. In the embodiment shown in FIG. 2, the detection circuit 302 is disposed on the base 10. FIG. 2 exemplarily illustrates the electrical connection between the detection circuit 302 and the membrane switch 301 with connecting lines. In this embodiment, the detection circuit 302 and the membrane switch 301 can be connected through conductive wiring disposed on the base 10. The base 10 may be provided with a trigger (e.g., a power button). When the trigger is triggered, the detection circuit 302 can detect the pressing state of the shield through the membrane switch, without the need to separately control the detection circuit 302 to electrically connect to the membrane switch 301, thus simplifying the detection process.

[0012] In other embodiments, in addition to the membrane switch and detection circuit described above, the shield assembly detection device may further include multiple sets of fixing structures for fixing the shield. Please refer to FIG3, which is a schematic diagram of one of the multiple sets of fixing structures of the shield assembly detection device according to an embodiment of the present invention. As shown in FIG3, each of the multiple sets of fixing structures may include two fixing components. Each membrane switch 301 is located between the two fixing components 303 of one of the multiple sets of fixing structures. The two fixing components 303 may be implemented as two shielding clips, and the two shielding clips hold the sidewall 201 of the shield 20. The fixing components 303 may also be implemented by other mechanisms, not limited to those shown in FIG3.

[0013] Please refer to Figures 4 and 5, which are schematic diagrams illustrating the operation of one of the multiple membrane switches in a shielded cover assembly detection device according to an embodiment of this disclosure. As shown in Figures 4 and 5, each of the multiple membrane switches 301 may include a metal spring 3011 and an insulating film 3012 covering the metal spring 3011, wherein the insulating film 3012 is an optional component. The metal spring 3011 may include two fixing portions 3011a and an elastic portion 3011b connecting the two fixing portions, and the two fixing portions 3011a are electrically connected to the grounding terminal GND provided on the base 10. The elastic portion 3011b is used to be electrically connected to the detection terminal 3021 when pressed by the shielded cover 20. As shown in Figure 4, when the shielded cover 20 does not press against the membrane switch 301, the metal spring 3011 of the membrane switch 301 is not electrically connected to the detection terminal 3021. As shown in Figure 5, when the shielding cover 20 correctly presses against the membrane switch 301, the detection terminal 3021 can be electrically connected to the ground terminal GND through the metal spring 3011. In the embodiments of Figures 3 to 5, the extending directions of the metal spring 3011 and the insulating film 3012 of the membrane switch 301 can be approximately perpendicular to the wall surface 201 of the shielding cover 20.

[0014] Please refer to Figure 6, which is a schematic diagram of one of a plurality of fixing structures of a shielding cover assembly detection device according to another embodiment of the present invention. As shown in Figure 6, each of the plurality of fixing structures may include two fixing components. Each membrane switch 301 is located between the two fixing components 303 of one of the plurality of fixing structures. The two fixing components 303 may be implemented as two shielding clips, and the two shielding clips hold the sidewall 201 of the shielding cover 20. The fixing components 303 may also be implemented by other mechanisms, not limited to those shown in Figure 6.

[0015] Please refer to Figure 7, which is a schematic diagram illustrating the operation of one of the multiple membrane switches in a shielded assembly detection device according to another embodiment of this disclosure. As shown in Figure 7, each of the multiple membrane switches 301 may include a metal spring 3011 and an insulating film 3012 covering the metal spring 3011, wherein the insulating film 3012 is an optional component and may have different shapes as required. The metal spring 3011 may include two fixing portions 3011a and an elastic portion 3011b connecting the two fixing portions, and the two fixing portions 3011a are electrically connected to the grounding terminal GND provided on the base 10. The elastic portion 3011b is used to be electrically connected to the detection terminal 3021 by being pressed by the shielded cover 20. When the shielded cover 20 correctly presses against the membrane switch 301, the detection terminal 3021 can be electrically connected to the grounding terminal GND through the metal spring 3011. In the embodiments shown in Figures 6 and 7, the extending directions of the metal spring 3011 and the insulating film 3012 of the membrane switch 301 can be approximately parallel to the wall surface 201 of the shielding cover 20.

[0016] Please refer to Figure 8, which is a functional block diagram of the detection circuit of a shield assembly detection device according to an embodiment of the present disclosure. As shown in Figure 8, the detection circuit 302 may include a plurality of detection sub-circuits 3022 and a processing element 3023, wherein one end of each of the plurality of detection sub-circuits 3022 serves as one of the plurality of detection terminals 3021, and the processing element 3023 is electrically connected to the plurality of detection sub-circuits 3022 for determining whether the shield is pressing against the membrane switch based on the potential of the detection terminal 3021. The processing element 3023 may include one or more processors, such as a central processing unit, graphics processor, microcontroller, programmable logic controller, or other processors with signal processing functions.

[0017] Please refer to Figure 9, which is a schematic diagram illustrating the connection of the detection terminal and the membrane switch of the shielding assembly detection device according to an embodiment of the present disclosure. As shown in Figure 9, the detection sub-circuit 3022 may include a resistor R1. One end of the resistor R1 can serve as the detection terminal 3021, and the other end can receive the voltage V provided inside the detection sub-circuit 3022. One end T2 of the detection sub-circuit 3022 can be connected to the detection terminal 3021 and the processing element shown in Figure 8, and the other end T1 of the detection sub-circuit 3022 can be used to receive the detection voltage and can be connected to the detection terminal 3021. When the shielding cover is not properly pressed against the base, the detection terminal 3021 is not grounded through the membrane switch 301, and the processing element can measure a high potential; when the shielding cover is properly pressed against the base, the detection terminal 3021 is grounded through the membrane switch 301, and the processing element can measure a low potential. When all detection terminals 3021 have a low potential, the processing element can determine that multiple membrane switches are blocked by the shielding cover; when any detection terminal 3021 has a high potential, the processing element determines that the shielding cover is not blocked correctly, and can further output a prompt signal.

[0018] Please refer to FIG10, which is a plan view of a shield assembly detection device according to an embodiment of the present invention. As shown in FIG10, the distance D1 between one of the plurality of fixing components 303 and the center line L of the side S of the shield 20 can be greater than the distance D2 between that fixing component 303 and a corner C of the shield 20. With this arrangement, the shield 20 can be more securely mounted on the base 10. In one embodiment, at least one of the plurality of fixing components 303 located on the same side is provided with the aforementioned membrane switch.

[0019] With the above structure, the shielding cover assembly and testing device disclosed herein has the advantages of simple structure, accurate testing, and easy integration. It is suitable for the production and testing processes of various electronic devices and can effectively improve production efficiency and product quality. In addition, the shielding cover assembly and testing device can avoid errors caused by manual testing, thereby improving product yield.

[0020] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention. For the scope of protection defined by the present invention, please refer to the appended claims. [Simplified Explanation of the Diagram]

[0021] Figure 1 is a side view of an electronic device including a shielding cover assembly detection device according to an embodiment of the present disclosure. Figure 2 is a side view of an electronic device including a shielding cover assembly detection device according to another embodiment of the present disclosure. Figure 3 is a schematic diagram of one of a plurality of fixing structures of the shielding cover assembly detection device according to an embodiment of the present disclosure. Figures 4 and 5 are schematic diagrams of the operation of one of a plurality of membrane switches of the shielding cover assembly detection device according to an embodiment of the present disclosure. Figure 6 is a schematic diagram of one of a plurality of fixing structures of the shielding cover assembly detection device according to another embodiment of the present disclosure. Figure 7 is a schematic diagram of the operation of one of a plurality of membrane switches of the shielding cover assembly detection device according to another embodiment of the present disclosure. Figure 8 is a functional block diagram of the detection circuit of the shielding cover assembly detection device according to an embodiment of the present disclosure. Figure 9 is a schematic diagram of the connection between the detection sub-circuit and the membrane switches of the shielding cover assembly detection device according to an embodiment of the present disclosure. Figure 10 is a schematic diagram of the arrangement of the fixing structure of the electronic device according to an embodiment of the present disclosure.

Claims

1. A shield assembly testing device, applicable to a base and a shield mounted on the base, comprising: a plurality of membrane switches for being disposed on the base and pressed by the shield; and a testing circuit having a plurality of testing terminals, wherein the testing terminals are respectively electrically connected to the membrane switches, and the testing circuit is used to determine whether the shield presses against the membrane switches based on the plurality of potentials of the testing terminals, wherein each of the membrane switches includes a metal spring, the metal spring including two fixing portions and an elastic portion connecting the two fixing portions, the two fixing portions being grounded, and the elastic portion being electrically connected to one of the testing terminals by being pressed by the shield; wherein the testing circuit includes: a plurality of testing sub-circuits, each including a resistor, wherein one end of the resistor serves as one of the testing terminals, and the other end of the resistor is used to receive an internally supplied voltage; and a processing element electrically connected to the testing sub-circuits, and used to determine whether the shield presses against the membrane switches based on the potentials of the testing terminals.

2. The shield assembly testing device as claimed in claim 1 further comprises multiple sets of fixing structures, each of the fixing structures comprising two fixing components, and one of the membrane switches being located between the two fixing components of one of the fixing structures.

3. The shield assembly testing device as described in claim 2, wherein the two fixing components are two shielding clamps that hold one side wall of the shield.

4. The shield assembly testing device as claimed in claim 2, wherein the distance between one of the fixing structures and the centerline of one side of the shield is greater than the distance between the fixing structure and a corner of the shield.

5. The shield assembly testing device as claimed in claim 1, wherein the membrane switch further includes an insulating film covering the metal spring.

6. An electronic device comprising: a base; a shield mounted on the base; a plurality of membrane switches disposed on the base and pressed by the shield; and a detection circuit having a plurality of detection terminals, wherein the detection terminals are respectively used to electrically connect the membrane switches, and the detection circuit is used to determine whether the shield presses against the membrane switches based on the plurality of potentials of the detection terminals, wherein each membrane switch includes a metal spring, the metal spring including two fixing portions and an elastic portion connecting the two fixing portions, the two fixing portions being grounded, and the elastic portion being used to be pressed against by the shield and electrically connected to one of the detection terminals, wherein the detection circuit includes: a plurality of detection sub-circuits, each including a resistor, wherein one end of the resistor serves as one of the detection terminals, and the other end of the resistor is used to receive an internally supplied voltage; and a processing element electrically connected to the detection sub-circuits, and used to determine whether the shield presses against the membrane switches based on the potentials of the detection terminals.

7. The electronic device as claimed in claim 6, wherein the detection circuit is disposed on the base.

8. The electronic device as claimed in claim 6, wherein the detection circuit is separate from the base.

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