Digital electronic detonator leg wire female plug

Abstract

The utility model discloses a digital electronic detonator leg wire female plug. The digital electronic detonator leg wire female plug comprises a leg wire body, a connecting pipe and a female plug body sleeved in the connecting pipe, the leg wire body comprises two split leg wires, and the two split leg wires are provided with connecting sections located in the connecting pipe. The female plug body comprises a socket, a wiring terminal, a circuit board and a capacitor which are sequentially distributed along the axial direction of the connecting pipe; the wiring terminal, the capacitor and the split leg wire are electrically connected to the circuit board respectively; the female plug body further comprises a packaging body located in the connecting pipe, and the packaging body is an insulator which is formed through secondary injection molding and wraps the connecting sections of the socket, the capacitor, the circuit board, the wiring terminal and the leg wire body. The digital electronic detonator leg wire female plug is simple and convenient to assemble, high in assembly efficiency and good in tensile strength and has a waterproof function.

Description

Technical Field

[0001] The present application relates to the technical field of digital electronic detonator blasting, and in particular to a digital electronic detonator foot line female plug. Background Art

[0002] In the field of blasting, electronic detonators can be controlled by electronic control systems to achieve the purpose of controlling the blasting process, and finally detonate the electronic detonators through the detonator. Electronic detonators include foot wires, detonating busbars, control circuit boards with delay chips, ignition heads and detonating powder, etc. When in use, it is necessary to connect the foot wires to the electronic detonators, that is, the foot wires are connected to the plugs of the electronic detonators through female plugs, and then the foot wires are connected to the detonating busbars through wire cards, and then the detonating busbars are connected to the detonating equipment, so that the detonation signal is transmitted to the control circuit board through the busbars and foot wires, and the preset time is delayed through the delay chip, and then the control circuit board issues a detonation command according to the delay to achieve detonation control.

[0003] The digital electronic detonator pin line female plug of the related technology is also called a pin line connector or a pin line joint, etc. Its structure includes a pin line and a connecting tube, two split pin lines are arranged in the pin line, one end of the connecting tube is installed with a plug connected to the electronic detonator, and four wiring terminals are installed in the plug, and a capacitor is arranged in the connecting tube, the two split pin lines are respectively connected to the two wiring terminals, and the two pins of the capacitor are respectively connected to the other two wiring terminals; such as the split pin line connector disclosed in the patent application with the publication number CN216845917U and the name of a digital detonator split pin line connector. The two split pin lines of the pin line connector are respectively welded to the two wiring terminals, and the two pins of the capacitor are respectively welded and fixed to the other two wiring terminals, and finally the connecting tube is sleeved, and the connecting tube is generally a metal tube. The sleeved metal tube is fixed to the plug by local riveting, wherein the local riveting is to press at least one plane area on the side wall of the metal tube.

[0004] The digital electronic detonator pin line female plug of the above-mentioned related technology has the following defects in the actual assembly and use process: first, the two split pins and the two pins of the capacitor need to be welded and fixed to the four wiring terminals respectively in sequence. The welding operation is time-consuming and the operation is troublesome, resulting in low assembly efficiency; in addition, the two split pins and the connecting tube are filled with insulating colloid, that is, after the connecting tube is assembled, the connecting tube is filled with insulating glue, which is not only troublesome to operate, but also the connection stability between the insulating colloid and the split pins is poor, resulting in weak tensile strength of the split pins; thirdly, the metal tube after sleeve connection is fixed to the plug by local riveting. Although this enables the metal tube to be better limited or fixed circumferentially, there is a gap between the metal tube and the plug. In a humid environment, water may enter to form a short circuit, resulting in the blasting point failing to detonate normally or other safety accidents. Utility Model Content

[0005] The technical problem to be solved by the present application is to overcome the defects of the above-mentioned related technologies and provide a digital electronic detonator pin female plug which is simple and convenient to assemble, has high assembly efficiency, good tensile strength and waterproof function.

[0006] The technical solution of the present application is to provide a digital electronic detonator pin line female plug with the following structure: including a pin line body, a connecting tube and a female plug body sleeved in the connecting tube; the pin line body includes two split pin lines, and the two split pin lines have a connecting section located in the connecting tube; the female plug body includes a socket, a terminal block, a circuit board and a capacitor distributed in sequence along the axial direction of the connecting tube; the terminal block, the capacitor and the split pin line are electrically connected to the circuit board respectively; the female plug body also includes a packaging body located in the connecting tube, and the packaging body is a secondary injection molding and an insulator wrapped around the connecting section of the socket, capacitor, circuit board, terminal block and pin line body.

[0007] In some embodiments, at least one annular groove arranged along the circumferential direction is provided on the outer side wall of the socket, and an annular sealing ring is connected to the annular groove to seal with the inner wall of the connecting pipe.

[0008] In some embodiments, a plurality of grooves are disposed on an outer side wall of the inner end of the socket, and an end of the packaging body close to the socket is disposed on the inner end of the socket and fills the grooves of the inner end of the socket.

[0009] In some embodiments, the package completely encloses the circuit board.

[0010] In some embodiments, the connection section of the leg wire body located in the connection tube is provided with at least one twisted connection portion formed by circumferentially twisting two split leg wires, and the connection portion is located in the packaging body.

[0011] In some embodiments, there are four terminals: a first terminal, a second terminal, a third terminal and a fourth terminal. The first terminal, the second terminal, the third terminal and the fourth terminal are spaced apart in sequence along the radial direction of the socket. The first terminal and the fourth terminal are electrically connected to the two pins of the capacitor through the circuit board, and the second terminal and the third terminal are electrically connected to the two split foot wires of the foot wire body through the circuit board.

[0012] In some embodiments, the socket is provided with four plugging slots, and the four wiring terminals are respectively connected to the four plugging slots.

[0013] In some embodiments, the connecting tube is made of metal, and at least one annular groove is provided on the outer wall of the connecting tube, which is circumferentially arranged and extends radially inward, and the protrusion on the back of the annular groove is at least partially embedded in the packaging body.

[0014] In some embodiments, the outer side wall of the connecting pipe is provided with at least one straight groove along the axial direction.

[0015] In summary, compared with the related art, the digital electronic detonator pin line female plug of the present application has the following advantages: a circuit board is arranged inside the digital electronic detonator pin line female plug, and the wiring terminals, capacitors and split pins are electrically connected to the circuit board respectively, so that during assembly, the wiring terminals, capacitors and split pins can be first welded to the circuit board through welding equipment, and then the wiring terminals can be connected to the socket after welding, which not only makes the welding operation simple and convenient, but also improves the assembly efficiency of the product; and after the wiring terminals, capacitors and split pins are welded to the circuit board and the wiring terminals are welded to the circuit board, the wiring terminals can be welded to the socket after welding. After the socket is assembled, the whole is injected into a low-pressure injection mold device for a second injection molding package, and the package is wrapped around the socket, capacitor, circuit board, terminal block and the connecting section of the foot line body, so that the socket, capacitor, circuit board and terminal block form an integral female plug body, and then the female plug body is sleeved and tightly fitted in the connecting tube; therefore, the digital electronic detonator foot line female plug is not only simple and convenient to assemble, but also has high assembly efficiency and waterproof and dustproof functions, so that the digital electronic detonator foot line female plug can still ensure the normal operation of the chip circuit in the electronic detonator under the constraints of various extreme environmental conditions. Furthermore, the second injection molding package makes the connecting section of the socket, capacitor, circuit board, terminal block and foot line body form a whole, so it has high tensile strength, good anti-fall performance, high durability and safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a digital electronic detonator pin line female plug in some implementation methods of the present application.

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of a female plug of a digital electronic detonator pin line in some implementation modes of the present application.

[0018] Figure 3 It is a schematic diagram of the assembly structure of a digital electronic detonator pin female plug in some implementation methods of the present application.

[0019] Figure 4 It is a structural schematic diagram of a female plug body of a digital electronic detonator pin line female plug in some implementation modes of the present application.

[0020] Description of reference numerals:

[0021] 1. Foot wire body, 100. Connecting section, 101. Split foot wire, 2. Connecting tube, 200. Annular pressing groove, 201. Straight pressing groove, 3. Female plug body, 300. Socket, 301. First wiring terminal, 302. Second wiring terminal, 303. Third wiring terminal, 304. Fourth wiring terminal, 305. Circuit board, 306. Capacitor, 307. Annular groove, 308. Annular sealing ring, 309. Groove, 310. Connecting slot, 311. Encapsulation body. DETAILED DESCRIPTION

[0022] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0023] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0024] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] See also Figure 1 to Figure 4As shown; the embodiment of the present application discloses a digital electronic detonator pin line female plug, one end of the digital electronic detonator pin line female plug has a pin line body 1 connected to the detonating busbar, and the other end can be plugged into the interface on the control circuit board of the electronic detonator; in this embodiment, the digital electronic detonator pin line female plug has a structure including a pin line body 1, a connecting tube 2 and a female plug body 3 sleeved in the connecting tube 2; the pin line body 1 includes two split pin lines 101, both of which have a wire core and an insulating layer wrapped on the wire core, and the two split pin lines 101 extend into the connecting tube 2, A connecting section 100 is formed in the connecting tube 2; the female plug body 3 includes a socket 300, a terminal block, a circuit board 305 and a capacitor 306 which are sequentially distributed along the axial direction of the connecting tube 2; the socket 300 is an injection-molded plastic part, and the terminal block is connected in the socket 300 to form a conductive node connected to the electronic detonator; the capacitor 306 is also a capacitor 306 device, which is used to store charge and release the charge when the trigger signal arrives, and is used in the electronic detonator detonation to delay ignition for a preset time, and then control the circuit board to issue a detonation command according to the delay to achieve detonation control. In this embodiment, the terminal block, the capacitor 306 and the split leg line 101 are electrically connected to the circuit board 305 respectively.

[0027] For example, Figure 3 and Figure 4 As shown, there are four wiring terminals: a first wiring terminal 301, a second wiring terminal 302, a third wiring terminal 303 and a fourth wiring terminal 304. The first wiring terminal 301, the second wiring terminal 302, the third wiring terminal 303 and the fourth wiring terminal 304 are sequentially spaced along the radial direction of the socket 300. The first wiring terminal 301 and the fourth wiring terminal 304 are electrically connected to the two pins of the capacitor 306 through the circuit board 305, respectively. The second wiring terminal 302 and the third wiring terminal 303 are electrically connected to the two split leg wires 101 of the leg wire body 1 through the circuit board 305. The electrical connection in this embodiment refers to the first wiring terminal 301, the second wiring terminal 302, the third wiring terminal 303 and the fourth wiring terminal 304 being electrically connected to the circuit on the circuit board 305 after being connected to the circuit board 305, and the two pins of the capacitor 306 are welded in the circuit on the circuit board 305, and the two split leg wires 101 of the leg wire body 1 are welded in the circuit on the circuit board 305. Therefore, when assembling the female plug body 3, the four wiring terminals, the capacitor 306 and the two split leg wires 101 can be welded to the circuit board 305 through welding equipment, and then the wiring terminals can be connected or assembled on the socket 300 through mechanized equipment. This not only makes the welding operation simple and convenient, but also improves the assembly efficiency of the product.

[0028] Furthermore, in this embodiment, the female plug body 3 further includes a packaging body 311 located in the connecting tube 2, and the packaging body 311 is a secondary injection-molded insulator that is wrapped around the socket 300, the capacitor 306, the circuit board 305, the terminal block, and the connecting section 100 of the leg wire body 1. Figure 3 As shown, after the connection terminal, capacitor 306 and split foot line 101 are welded to the circuit board 305 and the connection terminal and the socket 300 are assembled, the whole is secondary injection molded in a low-pressure injection mold device, and the package body 311 is formed on the socket 300, capacitor 306, circuit board 305, connection terminal and the connecting section 100 of the foot line body 1, so that the socket 300, capacitor 306, circuit board 305 and connection terminal form an integral female plug body 3, and then the female plug body 3 is sleeved and tightly fitted in the connecting tube 2. Therefore, the digital electronic detonator foot line female plug is not only simple and convenient to assemble, but also has high assembly efficiency and waterproof and dustproof functions, so that the digital electronic detonator foot line female plug can still ensure the normal operation of the chip circuit in the electronic detonator under the constraints of various extreme environmental conditions. Furthermore, the secondary injection-molded package 311 forms the socket 300, capacitor 306, circuit board 305, connection terminal and the connecting section 100 of the foot wire body 1 into a whole, so it has high tensile strength, good drop resistance, high durability and safety in use.

[0029] In the previous embodiment, the assembly between the four connection terminals and the socket 300 can be performed by automated equipment to improve assembly accuracy and assembly efficiency; specifically, Figure 3 As shown, the socket 300 is provided with four plugging slots 310 , and the four wiring terminals are respectively connected in the four plugging slots 310 .

[0030] In some embodiments, in order to further improve the structural stability and tensile strength of the digital electronic detonator foot wire female plug, the connection section 100 of the foot wire body 1 located in the connecting tube 2 is provided with at least one section of a twisted connection portion formed by twisting two separate foot wires 101 along the circumferential direction, and the connection portion is located in the packaging body 311. Figure 3 and Figure 4 As shown, the two split leg wires 101 are twisted into a twist or wave shape, so that when the package body 311 is secondary injection molded, the bonding area between the split leg wire 101 and the package body 311 can be increased, the bonding strength is improved, and the tensile strength of the electronic detonator leg wire female plug can be further improved.

[0031] In order to further improve the structural stability and tensile strength of the digital electronic detonator pin female plug, such as Figure 3As shown, a plurality of grooves 309 are provided on the outer wall of the inner end of the socket 300, and the end of the encapsulation body 311 close to the socket 300 is wrapped around the inner end of the socket 300 and fills the grooves 309 of the inner end of the socket 300. In this way, after the encapsulation body 311 is secondary injection-molded, the encapsulation body 311 and the socket 300 become an integrated structure, which not only has good structural stability and high tensile strength, but also has good waterproof performance.

[0032] Furthermore, in this embodiment, the packaging body 311 completely wraps the circuit board 305 after injection molding. The packaging body 311 is made of plastic insulating material and completely wraps the circuit board 305, which can improve the waterproof performance and drop resistance of the circuit board 305.

[0033] In some embodiments, in order to further improve the waterproof and dustproof performance of the digital electronic detonator pin female plug, at least one annular groove 307 arranged along the circumference is provided on the outer wall of the socket 300, and an annular sealing ring 308 is connected to the annular groove 307 to seal with the inner wall of the connecting pipe 2. Figure 3 As shown, the annular sealing ring 308 can prevent water from entering the female plug body 3 through the gap between the connecting pipe 2 and the socket 300, thereby improving its waterproof and dustproof performance; in this embodiment, the annular sealing ring 308 is set to one, and in other embodiments, the annular sealing ring 308 can also be two, three, etc.

[0034] In some embodiments, Figure 1 and Figure 3 As shown, the connecting tube 2 is made of metal. In this embodiment, the connecting tube 2 is made of aluminum alloy, which greatly enhances the pressure resistance and sealing of the product. In this embodiment, the connecting tube 2 adopts an integrated extrusion and stretching process to obtain a circular sleeve with a round strip diameter of 9mm and a wall thickness of 0.3mm, which can block the internal circuit and detonation device, avoid accidental triggering of the electronic detonator by external factors, and improve the safety of the electronic detonator. The outer wall of the connecting tube 2 is provided with at least one annular groove 200 arranged circumferentially and extending radially inward, and the protrusion on the back of the annular groove 200 is at least partially embedded in the packaging body 311. The annular groove 200 is an annular groove 200 rolled on a rolling device, which can not only prevent the connecting tube 2 from falling off and rotating, but also the annular protrusion formed on the back of the annular groove 200 is embedded in the packaging body 311, so it can effectively prevent moisture from entering, further improving the waterproof and dustproof performance of the product.

[0035] Furthermore, in order to make the connection of the connecting tube 2 more firmly and prevent the connecting tube 2 from rotating in the circumferential direction relative to the packaging body 311, at least one straight pressing groove 201 is axially provided on the outer wall of the connecting tube 2. A protrusion embedded in the packaging body 311 is formed on the back of the straight pressing groove 201, which not only makes the connection of the connecting tube 2 more firmly, but also prevents the connecting tube 2 from rotating.

[0036] In the embodiment of the present application, when assembling the digital electronic detonator foot line female plug, firstly, four wiring terminals, capacitor 306 and two split foot lines 101 are welded on the circuit board 305 on the welding equipment; then, the four wiring terminals are assembled into the four plug slots 310 of the socket 300 using the automated assembly equipment; then, the package body 311 is secondary injection molded on the injection molding equipment, so that the socket 300, capacitor 306, circuit board 305, wiring terminals and the connecting section 100 of the foot line body 1 form a whole; then, the annular sealing ring 308 is installed, and the connecting tube 2 is sleeved; finally, the annular pressing groove 200 and the straight pressing groove are processed on the rolling equipment. Therefore, the digital electronic detonator foot line female plug is simple and convenient to assemble, has high assembly efficiency, good tensile strength and has waterproof and dustproof functions.

[0037] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0038] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A female plug for a digital electronic detonator, characterized by: It comprises a leg wire body, a connecting tube and a female plug body sleeved in the connecting tube; the leg wire body comprises two split leg wires, and the two split leg wires have connecting sections located in the connecting tube; the female plug body comprises a socket, a terminal, a circuit board and a capacitor distributed in sequence along the axial direction of the connecting tube; the terminal, the capacitor and the split leg wire are electrically connected to the circuit board respectively; the female plug body also comprises a packaging body located in the connecting tube, the packaging body is a secondary injection-molded insulator wrapped around the socket, the capacitor, the circuit board, the terminal and the connecting section of the leg wire body.

2. The digital electronic detonator pin female plug according to claim 1, characterized in that: At least one annular groove arranged along the circumferential direction is provided on the outer side wall of the socket, and an annular sealing ring is connected in the annular groove and is sealed with the inner wall of the connecting pipe.

3. The digital electronic detonator pin female plug according to claim 1, characterized in that: A plurality of grooves are arranged on the outer side wall of the inner end of the socket, and one end of the packaging body close to the socket is wrapped around the inner end of the socket and fills the grooves of the inner end of the socket.

4. The digital electronic detonator pin female plug according to claim 3 is characterized in that: The packaging body completely encloses the circuit board.

5. The digital electronic detonator pin female plug according to claim 1, characterized in that: The connecting section of the leg wire body located in the connecting tube is provided with at least one twist-shaped connecting portion formed by twisting two split leg wires in the circumferential direction, and the connecting portion is located in the packaging body.

6. The digital electronic detonator pin female plug according to claim 1, characterized in that: There are four wiring terminals: a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal. The first wiring terminal, the second wiring terminal, the third wiring terminal and the fourth wiring terminal are spaced apart in sequence along the radial direction of the socket. The first wiring terminal and the fourth wiring terminal are electrically connected to the two pins of the capacitor through the circuit board, and the second wiring terminal and the third wiring terminal are electrically connected to the two split foot wires of the foot wire body through the circuit board.

7. The digital electronic detonator pin female plug according to claim 6, characterized in that: The socket is provided with four plugging slots, and the four wiring terminals are respectively connected to the four plugging slots.

8. The digital electronic detonator pin female plug according to any one of claims 1 to 7, characterized in that: The connecting tube is made of metal, and at least one annular pressing groove arranged circumferentially and extending radially inward is provided on the outer side wall of the connecting tube, and the protrusion on the back side of the annular pressing groove is at least partially embedded in the packaging body.

9. The digital electronic detonator pin female plug according to claim 8, characterized in that: The outer side wall of the connecting pipe is provided with at least one straight pressing groove along the axial direction.

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