Circuit board connection structure and liquid level sensing device thereof

Abstract

A circuit board connecting structure and a liquid level sensing device thereof include two printed circuit boards and at least one conductive connecting member. The two printed circuit boards are close to each other. Each printed circuit board has a first surface and a second surface opposite to the first surface. The first surface is provided with a printed circuit. The conductive connecting member has a connecting body and a plurality of pins provided on the connecting body. The connecting body is disposed on the first surfaces of the two printed circuit boards. Each pin is disposed on the first surface of each printed circuit board to electrically connect with the printed circuit.

Description

Technical Field

[0001] This application relates to a flexible circuit board, and more particularly to a circuit board connection structure and its liquid level sensing device. Background Technology

[0002] The production of existing printed circuit boards (PCBs) is limited by factors such as materials and machinery, affecting the length of the boards that can be manufactured. Generally, the length is within one meter. For lengths exceeding this, two clamping plates with round holes must be used, and then two small pieces of board material are secured with rivets. This method, when used for lengths of six to ten meters, is cumbersome, and the reliance on the PCB for connection with the clamping plates and round holes makes the product's stability during processing unreliable. Furthermore, the increased hardness at the joint between the PCB and the clamping plates can easily cause poor contact at the rivet points during winding.

[0003] Furthermore, when applied to applications such as liquid level sensors, a waterproof outer tube is essential for protection. If the tube is too long, it must be wound into a circular shape for transport and on-site installation, as the machining and riveting points may loosen, causing poor contact or increased impedance, resulting in inaccurate measurements. In industrial applications, this could lead to problems, control errors, and ultimately, workplace safety incidents such as liquid spills.

[0004] In view of this, in order to improve and solve the above-mentioned deficiencies, the applicant has devoted himself to research and applied theoretical principles, and finally proposed a design that is reasonable and effective in improving the above-mentioned deficiencies. Utility Model Content

[0005] The main objective of this application is to provide a circuit board connection structure and its liquid level sensing device, which uses a conductive metal component to join two printed circuit boards. The conductive metal component is thinner and more flexible than the printed circuit boards, making it suitable for bending after the printed circuit boards are joined, and reducing the width of the printed circuit boards at the joint.

[0006] Another objective of this application is to provide a circuit board connection structure and its liquid level sensing device, which further includes a double-layer protection design with protective accessories or the like on the back of the two combined printed circuit boards.

[0007] To achieve the above objectives, this application provides a circuit board connection structure, including two printed circuit boards and at least one conductive connector. The two printed circuit boards are close to each other, and each printed circuit board has a first surface and a second surface opposite to the first surface. The first surface is provided with printed circuits. The conductive connector has a connecting body and a plurality of pins provided on the connecting body. The connecting body spans the first surfaces of the two printed circuit boards and is electrically connected to the printed circuits by each pin being respectively provided on the first surfaces of the two printed circuit boards.

[0008] In one implementation, both printed circuit boards are elongated strips.

[0009] In one embodiment, a plurality of electronic components are disposed on the first surface of the two printed circuit boards, and the plurality of electronic components are electrically connected to the printed circuit.

[0010] In one embodiment, each printed circuit board has a plurality of pin vias and a plurality of component vias on its first surface, with the plurality of pins corresponding to each pin via and the pins of the plurality of electronic components corresponding to each component via.

[0011] In one embodiment, there are two conductive connectors, which are located on both sides of any electronic component. Each conductive connector has an abutment edge on its connecting body and extends along the length of the connecting body. The abutment edge abuts against the outside of one side of any electronic component.

[0012] In one embodiment, a protective cover is provided on the second surface of both printed circuit boards.

[0013] In one embodiment, a sleeve is included and covers the protective cover and the corresponding electronic components.

[0014] In one embodiment, the conductive connector is made of a metallic material.

[0015] To achieve the above objectives, this application provides a liquid level sensing device, including an outer tube body, an outer tube fixing member connected to one end of the outer tube body, a hanging member connected to the other end of the outer tube body, and the aforementioned circuit board connection structure, wherein the circuit board connection structure is disposed inside the outer tube body and electrically connected to the sensing module.

[0016] In one embodiment, the liquid level sensing device is a long, slender, hanging type. Attached Figure Description

[0017] Figure 1 This is a partial three-dimensional assembly diagram of the circuit board connection structure of this application.

[0018] Figure 2 According to Figure 1 Enlarged detail of Part A.

[0019] Figure 3 This is a partial exploded perspective view of the circuit board connection structure of this application.

[0020] Figure 4 According to Figure 1 Plan view of Part A.

[0021] Figure 5 According to Figure 4 Sectional view of section 5-5.

[0022] Figure 6 According to Figure 1 Another perspective stereoscopic view of Part A.

[0023] Figure 7 According to Figure 5 Another embodiment of the cross-sectional view.

[0024] Figure 8 This is a perspective view of the liquid level sensing device of this application. Explanation of reference numerals:

[0025] B: Circuit board connection structure;

[0026] 1: Printed circuit board;

[0027] 10: First surface;

[0028] 100: Pin guide hole;

[0029] 101: Component guide hole;

[0030] 11: Second surface;

[0031] 2: Conductive connectors;

[0032] 20: Connect the main body;

[0033] 21: Connector;

[0034] 22: Relying on fate;

[0035] 3: Electronic components;

[0036] 30: Pin;

[0037] 4: Protective cover;

[0038] 5: Sleeve;

[0039] 6: Liquid level sensing device;

[0040] 60: Outer tube body;

[0041] 600: Protective hose;

[0042] 600a: First connector;

[0043] 601: Flexible hose;

[0044] 601a: Second connector;

[0045] 61: Outer tube fastener;

[0046] 62 Hanging components. Detailed Implementation

[0047] To further disclose the features and technical content of this application, please refer to the following detailed description and accompanying drawings. However, the accompanying drawings are for reference and illustration only and are not intended to limit this application.

[0048] Please see Figure 1 and Figure 3 These are, respectively, a partial three-dimensional assembly view and a partial three-dimensional exploded view of the circuit board connection structure of this application. This application provides a circuit board connection structure and a liquid level sensing device thereof. The circuit board connection structure B can be used within the liquid level sensing device 6 (i.e., as shown in...). Figure 8 As shown), and includes two printed circuit boards (PCBs) 1, and at least one conductive connector 2; wherein:

[0049] Both printed circuit boards 1 can be elongated and have an appropriate length. This appropriate length can be set according to actual needs or is limited by factors such as the manufacturing process, allowing for a maximum length. For example... Figure 3 and Figure 6 As shown, the two printed circuit boards 1 are close to each other, each printed circuit board 1 having a first surface 10 and a second surface 11, with the first surface 10 and the second surface 11 facing away from each other. The first surface 10 has printed circuitry (not shown) for soldering and electrical connection of multiple electronic components 3 required on the printed circuit board 1. The second surface 11 can be covered by a protective cover 4, which spans between any two printed circuit boards 1. The protective cover 4 can be made of plastic or insulating material.

[0050] like Figure 2 and Figure 3As shown, the conductive connector 2 is made of a conductive metal material, and each conductive connector 2 has a strip-shaped connecting body 20 and a plurality of pins 21 extending from the connecting body 20. Each conductive connector 2 is placed between the first surfaces 10 of any two printed circuit boards 1 with its connecting body 20, so that its pins 21 can be soldered to the printed circuits (not shown) on the first surfaces 10 of the two printed circuit boards 1 respectively for electrical connection, so that the two printed circuit boards 1 can be electrically connected to each other through the conductive connector 2. Specifically, each printed circuit board 1 has multiple pin holes 100 and multiple component holes 101 on its first surface 10. The multiple pins 21 correspond to each pin hole 100, and the pins 30 of the electronic components 3 correspond to each component hole 101. The printed circuit (not shown) is arranged at the multiple pin holes 100 and component holes 101, thereby enabling each printed circuit board 1 to be electrically connected to each other.

[0051] Furthermore, such as Figure 4 and Figure 5 As shown, the number of the conductive connectors 2 can be two, and they are respectively located on both sides of any of the electronic components 3. Each conductive connector 2 has an abutment edge 22 on its connecting body 20, which extends along the length of the connecting body 20. The abutment edge 22 abuts against one side of any electronic component 3, thereby confining the electronic component 3 between the two conductive connectors 2 and preventing the electronic component 3, which is placed between the two printed circuit boards 1, from tilting due to bending and collision.

[0052] In addition, such as Figure 7 As shown, the circuit board connection structure B may further include a sleeve 5 that covers the protective cover 4 and the corresponding electronic component 3. The sleeve 5 may be a general sleeve or a heat shrink tubing, and may provide functions such as corrosion resistance, acid and alkali resistance, and waterproofing.

[0053] Additionally, such as Figure 8As shown, the circuit board connection structure B described above can be applied to a liquid level sensing device 6, which can be a long, slender, hanging type. The liquid level sensing device 6 includes an outer tube 60, an outer tube fixing member 61 connected to one end of the outer tube 60, and a hanging member 62 connected to the other end of the outer tube 60. The outer tube 60 has a protective hose 600 and a flexible hose 601. The protective hose 600 is provided with a first connector 600a, and the flexible hose 601 is provided with a second connector 601a. ​​The protective hose 600 and the flexible hose 601 are interconnected and communicate with each other through the first connector 600a and the second connector 601a, so that the circuit board connection structure B can be disposed inside the outer tube 60 and electrically connected to the sensing module (figure not shown). This allows the circuit board connection structure B to be applied to flexible electronic products, especially to the long, slender, hanging liquid level sensing device 6.

[0054] Therefore, by means of the circuit board connection structure and liquid level sensing device of this application, the circuit board connection structure B uses a conductive connector 2 made of metal material to combine two printed circuit boards 1. The conductive connector 2 is thinner and more flexible than the printed circuit board 1. The conductive connector 2 can be directly processed to have pins 21 and inserted into the pin guide holes 100 of the two mating printed circuit boards 1 for soldering, so as to serve as the connector and electrical conductive material of the two printed circuit boards 1. In this way, the width of the mating of the printed circuit boards 1 can be reduced, and it is quick, more flexible and stronger at the connection of the boards, and is not afraid of problems such as loosening or poor conductivity caused by bending or winding of the printed circuit boards 1. At the same time, it can also add a double protection design of protective cover 4 and sleeve 5 and other protective accessories.

[0055] Therefore, by using the above-described structure, the circuit board connection structure and liquid level sensing device of this application can be obtained.

[0056] However, the above description is only a preferred embodiment of this application and does not limit the patent scope of this application. Therefore, all equivalent structural changes made using the content of this application's specification and drawings are also included within the scope of this application and are hereby stated.

Claims

1. A circuit board connection structure, characterized in that, include: Two printed circuit boards are placed close to each other, and each of the printed circuit boards has a first surface and a second surface opposite to the first surface, and the first surface is provided with printed circuits. as well as At least one conductive connector has a connector body and a plurality of pins disposed on the connector body, the connector body spanning across the first surfaces of the two printed circuit boards, and each of the pins is disposed on the first surfaces of the two printed circuit boards to be electrically connected to the printed circuit boards.

2. The circuit board connection structure as described in claim 1, characterized in that, Both printed circuit boards are elongated.

3. The circuit board connection structure as described in claim 1, characterized in that, The first surface of the two printed circuit boards is provided with a plurality of electronic components, and the plurality of electronic components are electrically connected to the printed circuit.

4. The circuit board connection structure as described in claim 3, characterized in that, Each of the printed circuit boards has a plurality of pin holes and a plurality of component holes on its first surface. The plurality of pins correspond to the pin holes respectively, and the pins of the plurality of electronic components correspond to the component holes respectively.

5. The circuit board connection structure as described in claim 3 or 4, characterized in that, The number of conductive connectors is two, and they are located on both sides of any of the electronic components. Each conductive connector has an abutment edge on its connecting body, which extends along the length of the connecting body and abuts against the outside of one side of any of the electronic components.

6. The circuit board connection structure as described in claim 3 or 4, characterized in that, A protective cover is provided on the second surface of the two printed circuit boards.

7. The circuit board connection structure as described in claim 6, characterized in that, It includes a sleeve that covers the protective cover and the corresponding electronic components.

8. The circuit board connection structure as described in claim 1, characterized in that, The conductive connector is made of metallic material.

9. A liquid level sensing device, characterized in that, include: The outer tube body has a protective hose and a flexible hose that are connected to each other; An outer tube fastener is connected to one end of the outer tube body; Hanging component, connected to the other end of the outer tube; and The circuit board connection structure as described in any one of claims 1 to 8 is disposed within the outer tube and electrically connected to the sensing module.

10. The liquid level sensing device as described in claim 9, characterized in that, The liquid level sensing device is a slender, hanging type.

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