Node type positioning sensing device

Abstract

The utility model relates to a node type positioning induction device, which belongs to the technical field of water immersion detection and comprises a shell and an induction line, an end hole for the induction line to penetrate through is arranged on the shell, a circuit board is arranged in the shell, one end of the induction line is electrically connected with the circuit board from the outside through the end hole and used for transmitting induction signals, and a sealant part is further arranged in the shell and used for sealing the induction line. The sealant part wraps the circuit board and the joint of the induction line and the circuit board. According to the node type positioning induction device disclosed by the utility model, the production problem that the waterproof yield of a product is not high due to the fact that a current induction device adopts a rubber coating injection molding mode for waterproofing can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water immersion detection equipment, especially to a node type positioning sensing device. BACKGROUND

[0002] Node type positioning sensing devices play a crucial role in water immersion detection. These devices typically utilize advanced sensing technology and Internet of Things technology to achieve real-time monitoring through multi-point layout, quickly locate water leakage positions, and accurately determine leakage conditions. They are widely used in areas prone to water accumulation such as basements, machine rooms, and pipelines, providing efficient and reliable solutions for waterproof monitoring.

[0003] To ensure the stable operation of node type positioning sensing devices in humid or water-rich environments, waterproof treatment is particularly important. A common waterproof method is to use a shell encapsulated circuit board injection molding method. This method coats a layer of waterproof material on the circuit board shell and tightly combines it with the circuit board through injection molding technology to form a waterproof barrier, effectively preventing water from penetrating into the circuit board and protecting the normal operation of the circuit. Although the shell encapsulated circuit board injection molding method provides a waterproof solution for node type positioning sensing devices in theory, in actual production, due to challenges such as material compatibility, injection molding process control, and structural design, the waterproof yield of the product is not high, which seriously affects the actual production efficiency. UTILITY MODEL CONTENT

[0004] To overcome the defects of the prior art, the utility model provides a node type positioning sensing device that can solve the problem of low waterproof yield of the product in the current sensing device for waterproof encapsulation injection molding.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a node type positioning sensing device, which comprises a shell and a sensing line, an end hole is arranged on the shell for the sensing line to pass through, a circuit board is arranged in the shell, one end of the sensing line is electrically connected from the outside through the end hole and the circuit board for transmitting sensing signals, and a sealing glue part is further arranged in the shell to wrap the circuit board and the connection between the sensing line and the circuit board.

[0007] The preferred technical solution of the utility model is that a waterproof connecting piece is further arranged, the waterproof connecting piece has a through structure, one end of the waterproof connecting piece passes through the end hole and is locked on the shell through a nut, and one end of the sensing line passes through the inside of the waterproof connecting piece from the outside and is electrically connected with the circuit board.

[0008] The preferred technical solution of the utility model is that a sealing ring for waterproofing is arranged between the waterproof connecting piece and the shell.

[0009] The utility model discloses preferably technical scheme at, the one end of inductive line is provided with inductive joint, still be provided with inductive interface on the casing, and inductive interface and circuit board pass through the electric connection of line.

[0010] The utility model discloses preferably technical scheme at, inductive joint and inductive interface are equipped with threaded connection structure respectively.

[0011] The utility model discloses preferably technical scheme at, the one end of inductive line still is provided with a plurality of metal wire cover, and metal wire cover is wrapped wire core and the connecting place of wire core and wire core sheath.

[0012] The utility model discloses preferably technical scheme at, metal wire cover is cold pressure joint.

[0013] The utility model discloses preferably technical scheme at, still include warning light, and warning light and circuit board electric connection, and the upper portion of casing is equipped with the light -transmitting part.

[0014] The utility model discloses preferably technical scheme at, circuit board and the bottom threaded connection of casing.

[0015] The utility model discloses preferably technical scheme at, the casing is square.

[0016] The utility model discloses the beneficial effect:

[0017] The utility model discloses a kind of node type positioning induction devices, give up original injection molding rubber-coated waterproof structure, but instead use the sealing glue part that is added in shell becomes the core of improving waterproof performance, it wraps circuit board and the connecting place thereof with inductive line skillfully, this step not only effectively insulates the erosion of moisture to circuit board and connecting point, using the elasticity and sealing property of sealing glue, forms a solid waterproof barrier.Compared with traditional rubber-coated injection molding mode, the use of sealing glue part is more flexible and more targeted, can accurately cover to the area most needing protection, to significantly improve the waterproof ability and yield of product. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the application or prior art, the following will briefly introduce the drawing needed to be used in embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the application, for ordinary skilled person in the art, without paying the creativity labor intensity, can also obtain other drawings according to these drawings.

[0019] Figure 1 It is the perspective view of a kind of node type positioning induction devices of the utility model embodiment one;

[0020] Figure 2 It is the plan view of a kind of node type positioning induction devices of the utility model embodiment one

[0021] Figure 3 For Figure 2 the sectional view along the direction of A-A;

[0022] Figure 4 is an exploded view of a node type positioning sensing device according to the first embodiment of the present application;

[0023] Figure 5 is an exploded view of the sensing connector according to the first embodiment of the present application.

[0024] In the figure:

[0025] 1 - shell; 11 - end hole; 12 - light transmission part; 2 - sensing wire; 21 - metal wire sleeve; 3 - circuit board; 4 - sealing glue part; 5 - waterproof connecting piece; 6 - nut; 7 - sealing ring; 81 - sensing connector; 82 - sensing interface; 9 - warning light. DETAILED DESCRIPTION

[0026] The technical scheme of the present application will be further illustrated by specific embodiments in combination with the drawings.

[0027] Embodiment I

[0028] A node type positioning sensing device provided in the present embodiment, as shown in Figures 1-5As shown, for the convenience of display, the connection part of the induction line and the circuit board is omitted, and the length of the induction line is shortened. In actual application, the length of the induction line is longer. The shell 1 is provided with an end hole 11 for the induction line 2 to pass through. The shell 1 is provided with a circuit board 3. One end of the induction line 2 is connected to the circuit board 3 through the end hole 11 and the circuit board 3. The shell 1 is also provided with a sealing glue part 4. The sealing glue part 4 wraps the circuit board 3 and the connection part of the induction line 2 and the circuit board 3. The shell in the scheme serves as the basic support structure of the entire device. The end hole carefully arranged thereon not only allows the induction line to pass through smoothly, but also ensures the compactness of the structure and the convenience of installation. As a key component for signal transmission, the induction line has one end introduced from the outside and electrically connected to the circuit board in the shell through the end hole. This design not only ensures stable signal transmission, but also provides operating space for subsequent waterproof treatment. More importantly, the sealing glue part added in the shell becomes the core of improving waterproof performance. It cleverly wraps the circuit board and its connection with the induction line. This step not only effectively isolates the erosion of water to the circuit board and the connection point, but also forms a solid waterproof barrier by using the elasticity and sealing property of the sealing glue. Compared with the traditional glue injection molding method, the use of the sealing glue part is more flexible and targeted, and can accurately cover the area that needs protection, thereby significantly improving the waterproof ability and yield of the product. In specific production, after the circuit board and the induction line are installed and welded according to the original process sequence, the epoxy potting glue is poured into the shell before the upper shell of the shell is closed. The glue is poured into the shell using a needle tube (without a needle), without filling the entire shell. The glue is poured to a height above the circuit board to cover the connection part of the induction line and the circuit board.

[0029] Preferably, it also includes a waterproof connector 5. The waterproof connector 5 has a through structure. One end of the waterproof connector 5 passes through the end hole 11 and is locked to the shell 1 by a nut 6. One end of the induction line 2 passes through the inside of the waterproof connector 5 and is electrically connected to the circuit board 3. Based on the original technical scheme, the waterproof connector is introduced as a transition component between the induction line and the shell. The through structure of the waterproof connector not only provides a safe channel for the induction line, but also ensures the firmness and sealing property of the connection part through the design that one end of the waterproof connector passes through the end hole and is locked to the shell by the nut. This design avoids the gaps that may occur in the traditional way, effectively preventing water from seeping from the connection part, thereby improving the waterproof level of the entire device. In addition, the use of the waterproof connector also simplifies the installation process and improves the assembly efficiency, providing convenience for large-scale production.

[0030] Preferably, a sealing ring 7 is provided between the waterproof connector 5 and the shell 1 for waterproofing. As an important component of the waterproof barrier, the material and structure of the sealing ring directly affect the waterproof effect. In this scheme, the sealing ring has good elasticity and corrosion resistance, and can tightly fit on the contact surface of the waterproof connector and the shell, effectively preventing the intrusion of water and moisture. This design not only improves the waterproof level of the device, but also enhances its stability and durability in harsh environments.

[0031] Since the product is a node-type device, it needs to be connected in series with multiple identical node-type positioning sensing devices. Specifically, one end of the sensing line 2 is provided with a sensing connector 81, and the shell 1 is also provided with a sensing interface 82, and the sensing interface 82 and the circuit board 3 are electrically connected through a line. The design of the sensing connector and the sensing interface not only simplifies the connection process between the sensing line and the circuit board, but also improves the stability and reliability of the connection. Through the plug-in method of the sensing connector and the sensing interface, efficient transmission of sensing signals can be ensured, and safety hazards that may be caused by traditional welding methods can be avoided. In addition, the setting of the sensing connector and the sensing interface also facilitates subsequent maintenance and replacement, reducing maintenance and time costs. In order to improve the waterproof performance of the product, the sensing connector and the sensing interface are also subjected to glue sealing waterproof treatment, and glue is injected through the needle of the syringe.

[0032] In order to facilitate the connection with adjacent node-type positioning sensing devices, the sensing connector 81 and the sensing interface 82 are preferably provided with threaded connection structures. The threaded connection structure not only provides reliable connection force, but also ensures the sealing of the connection part. This design can effectively prevent water and moisture from seeping into the connection, thereby improving the waterproof level of the device. At the same time, the threaded connection structure also has the characteristics of easy installation and disassembly, providing convenience for subsequent maintenance and replacement.

[0033] Preferably, one end of the induction wire 2 is also provided with several metal wire sleeves 21, which wrap around the wire core and the connection between the wire core and the wire core sheath. The metal wire sleeve, as a key component for protecting the induction wire from external environmental interference, its material and structure selection is crucial. In this scheme, the metal wire sleeve selected has good electrical conductivity and corrosion resistance, and can tightly wrap around the wire core and the connection, forming a solid protective barrier. This design not only improves the anti-interference ability of the induction wire, but also enhances its stability and durability in harsh environments. At the same time, the use of metal wire sleeve also enhances the strength of the induction wire and reduces the failure rate caused by line aging or damage, prolonging the service life of the device. Further, the metal wire sleeve 21 is a cold pressure joint. The cold pressure joint tightly connects the metal wire sleeve and the wire core together through mechanical compression, with the advantages of firm connection, small resistance, corrosion resistance, etc. This connection method not only improves the electrical conductivity and stability of the induction wire, but also reduces the failure rate caused by poor contact. At the same time, the use of cold pressure joint also simplifies the installation process and improves the assembly efficiency. In addition, the cold pressure joint also has the characteristics of easy replacement and maintenance, which provides convenience for subsequent maintenance work.

[0034] Preferably, it also includes a warning light 9, which is electrically connected to the circuit board 3, and the upper part of the shell 1 is provided with a light-transmitting part 12. The warning light, as an important component for indicating the working state of the device, its on-off state can intuitively reflect the running condition of the device. When the device detects water immersion, the warning light will light up in time to remind the user to carry out maintenance or maintenance in the water immersion area.

[0035] Preferably, the circuit board 3 and the bottom of the shell 1 are threadedly connected. Threaded connection not only provides reliable connection force, but also ensures the close fit between the circuit board and the shell. This design can effectively prevent water and moisture from seeping into the internal circuit board from the connection, thereby improving the waterproof level and stability of the device. At the same time, threaded connection also has the characteristics of easy installation and disassembly, which provides convenience for subsequent maintenance and replacement of the circuit board.

[0036] Preferably, the shell 1 is square. The square shell not only has the advantages of compact structure and high space utilization, but also is convenient for users to install and fix. This design not only improves the stability and durability of the device, but also reduces the failure rate caused by deformation or damage of the shell. At the same time, the square shell also facilitates subsequent maintenance and replacement work of the user. In addition, the square shell also has the characteristics of elegant appearance, which improves the overall image and quality of the device.

[0037] The utility model discloses the description through the preferred embodiment, and the person skilled in the art knows that various changes or equivalent replacement can be made to these features and embodiments without departing from the spirit and scope of the utility model. The utility model is not limited by the specific embodiments disclosed here, and other embodiments falling within the claims of the present application all belong to the scope of protection of the utility model.

Claims

1. A node-type positioning sensing device, characterized in that: It includes a housing (1) and a sensing wire (2), wherein the housing (1) is provided with an end hole (11) through which the sensing wire (2) passes; The housing (1) is provided with a circuit board (3), and one end of the sensing line (2) is electrically connected to the circuit board (3) from the outside through the end hole (11) to transmit the sensing signal; The housing (1) is also provided with a sealant part (4), which covers the circuit board (3) and the connection between the sensing line (2) and the circuit board (3).

2. The node-type positioning sensing device according to claim 1, characterized in that: It also includes waterproof connectors (5); The waterproof connector (5) has a through-hole structure. One end of the waterproof connector (5) passes through the end hole (11) and is locked to the housing (1) by a nut (6). One end of the sensing line (2) passes through the interior of the waterproof connector (5) from the outside and is electrically connected to the circuit board (3).

3. The node-type positioning sensing device according to claim 2, characterized in that: A sealing ring (7) for waterproofing is provided between the waterproof connector (5) and the housing (1).

4. The node-type positioning sensing device according to claim 1, characterized in that: One end of the sensing line (2) is provided with a sensing connector (81), and the housing (1) is also provided with a sensing interface (82); The sensing interface (82) and the circuit board (3) are electrically connected via a line.

5. The node-type positioning sensing device according to claim 4, characterized in that: The induction connector (81) and the induction interface (82) are respectively provided with threaded connection structures.

6. The node-type positioning sensing device according to claim 1, characterized in that: One end of the sensing line (2) is also provided with several metal wire sleeves (21), which wrap the wire core and the connection between the wire core and the wire core sheath.

7. The node-type positioning sensing device according to claim 6, characterized in that: The metal wire sleeve (21) is a cold-pressed connector.

8. The node-type positioning sensing device according to claim 1, characterized in that: It also includes warning lights (9); The warning light (9) and the circuit board (3) are electrically connected, and the upper part of the housing (1) is provided with a light-transmitting part (12).

9. The node-type positioning sensing device according to claim 1, characterized in that: The circuit board (3) and the housing (1) are threaded together at the bottom.

10. The node-type positioning sensing device according to claim 1, characterized in that: The shell (1) is square.

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