Miniaturized safety device

Abstract

The device comprises a shell, a machine base is arranged in the shell, an end cover is installed at the position of an opening of the shell, a connecting circuit board is arranged on the machine base, a direct insertion type electric connector is installed on the end cover, and a circuit switching assembly is arranged between the direct insertion type electric connector and the connecting circuit board. The direct insertion type electric connector is directly inserted into the switching circuit board; the switching circuit board and the connecting circuit board are connected through the flexible electric connecting belt, circuit communication is achieved, wire bundle welding is replaced, the bending radius of a reserved wire bundle does not need to be considered, disordered crossing of wires does not exist, the miniaturization design of the structure is facilitated, and the assembly efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of safety and release devices, in particular to a miniaturized safety and release device. Background Art

[0002] The safety and release device is the detonating device of the ammunition, ensuring the safety of the ammunition during storage, transportation, and service handling. After the ammunition is launched and flies to a safe distance, the safety and release device reliably completes the safety release function and enters the ready-to-fire state. When the ammunition encounters the target, the safety and release device reliably detonates the damage system of the ammunition.

[0003] The safety device typically consists of a housing, end caps, a base, a circuit board, and a sealing ring. The end caps are mounted with electrical connectors, which are connected to the circuit board using a wiring harness to achieve electrical functionality. The end caps, base, circuit board, sealing ring, and housing are assembled into a single unit and secured with screws to create a complete seal.

[0004] Existing sealed electrical connectors generally require welding of wire bundles, making the assembly of the security device more complicated. The wire bundles used for welding require a reserved bending radius, and multiple crossings occur between the wires, resulting in a larger size of the security device and difficulty in achieving miniaturization. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a miniaturized solution device.

[0006] The present invention is achieved through the following technical solutions.

[0007] The present invention provides a miniaturized safety and solution device, including a shell, a base provided inside the shell, an end cover installed at the opening of the shell, a connecting circuit board provided on the base, a plug-in electrical connector installed on the end cover, and a circuit adapter component provided between the plug-in electrical connector and the connecting circuit board.

[0008] Preferably, the circuit adapter assembly includes an adapter circuit board and a flexible electrical connecting strip. The adapter circuit board is arranged inside the shell, the plug-in end of the straight-plug electrical connector is plugged into the adapter circuit board, and the two ends of the flexible electrical connecting strip are respectively connected to the adapter circuit board and the connecting circuit board.

[0009] Preferably, printed conductors are provided in the flexible electrical connection belt.

[0010] Preferably, a rectangular hole is provided on the end cover, the plug-in end of the straight plug-in type electrical connector is passed through the rectangular hole, and a gap exists between the plug-in end of the straight plug-in type electrical connector and the rectangular hole.

[0011] Preferably, a mounting groove is provided on the outer surface of the end cover, the rectangular hole is located in the middle of the bottom wall of the mounting groove, a C-shaped block is snap-fitted into the mounting groove, and the cavity length of the C-shaped block is smaller than the length of the rectangular hole.

[0012] Preferably, a sealing layer is provided on the inner side of the end cover around the rectangular hole, and the sealing layer covers the base of the pins of the plug-in end of the straight-in electrical connector.

[0013] Preferably, the adapter circuit board is provided with a plurality of welding holes, the plurality of pins on the plug-in end of the straight plug-in electrical connector correspond one-to-one to the plurality of holes, and the plurality of pins on the plug-in end of the straight plug-in electrical connector are respectively welded in the corresponding welding holes.

[0014] Preferably, a gap is formed around the connection between the shell and the end cover, and a sealing ring is provided in the gap.

[0015] Preferably, a pressure ring is further provided at the gap, and the pressure ring is tightly pressed against the sealing ring.

[0016] The beneficial effects of the present invention are: 1. The plug-in electrical connector is directly plugged into the adapter circuit board; the adapter circuit board and the connection circuit board are connected by a flexible electrical connection belt to achieve circuit connectivity, replacing the welding of wire harnesses. There is no need to consider the bending radius of the reserved wire harness, and there is no messy crossing of wires, which is conducive to the miniaturization design of the structure and also helps to improve assembly efficiency.

[0017] 2. A sealing layer is used inside the end cap to cover the pin roots of the plug-in electrical connector, ensuring that nitrogen will not leak from the tiny gap between the plug-in electrical connector and the end cap and the gaps of the plug-in electrical connector itself, ensuring that the safety device has good airtightness.

[0018] 3. By setting up a C-shaped block, there is no large gap between the plug-in electrical connector and the end cover, ensuring good electromagnetic compatibility of the installation device.

[0019] 4. Use direct plug-in electrical connectors, which are cheaper than sealed connectors and help reduce the cost of the installation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic cross-sectional view of the present invention; Figure 2 This is a partial structural diagram of the present invention mainly used to illustrate the end cover and the straight-plug type electrical connector; Figure 3 yes Figure 2 Schematic diagram of the explosion structure; Figure 4 It is a structural schematic diagram of the straight plug type electrical connector in the present invention; Figure 5 This is a schematic cross-sectional view of the in-line electrical connector of the present invention mounted on an end cover; Figure 6This is a partial structural diagram of the present invention mainly used to illustrate the adapter assembly, end cover and connection circuit board; In the figure: 1-housing; 2-end cover; 3-base; 4-in-line electrical connector; 5-sealing ring; 6-pressure ring; 7-connecting circuit board; 8-adapter circuit board; 9-flexible electrical connection belt; 10-C-block; 11-screw; 12-sealing adhesive layer; 13-rectangular hole; 14-mounting slot. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In this embodiment, referring to Figure 1 , including a shell 1, a machine base 3 is provided in the shell 1, and an end cover 2 is installed at the opening of the shell 1; a gap is formed around the connection between the shell 1 and the end cover 2, and a sealing ring 5 is provided in the gap; a pressure ring 6 is also provided in the gap, and the pressure ring 6 is tightly pressed against the sealing ring 5; it is used to strengthen the sealing connection between the shell 1 and the end cover 2 and improve the stability of the connection between the shell 1 and the end cover 2.

[0024] In order to facilitate the insertion of the plug-in type electrical connector 4 into the housing 1 from the end cover 2, in this embodiment, Figure 2 and Figure 3 A rectangular hole 13 is provided on the end cover 2, and the plug-in end of the straight plug-in type electrical connector 4 is passed through the rectangular hole 13, and there is a gap between the plug-in end of the straight plug-in type electrical connector 4 and the rectangular hole 13, so that the straight plug-in type electrical connector 4 can pass through the rectangular hole 13.

[0025] In this embodiment, referring to Figure 1 、 Figure 2 and Figure 3A connecting circuit board 7 is provided on the machine base 3, a plug-in electrical connector 4 is installed on the end cover 2, and a circuit adapter component is provided between the plug-in electrical connector 4 and the connecting circuit board 7; the circuit adapter component includes an adapter circuit board 8 and a flexible electrical connecting belt 9, the adapter circuit board 8 is arranged inside the shell 1, and the adapter circuit board 8 is located near the inner side of the end cover 2, so that the plug-in end of the plug-in electrical connector 4 passes through the rectangular hole 13 and is plugged into the adapter circuit board 8, so that the adapter circuit board 8 is fixed on the plug-in electrical connector 4, and the two ends of the flexible electrical connecting belt 9 are respectively connected to the adapter circuit board 8 and the connecting circuit board 7, and a printed conductor is provided in the flexible electrical connecting belt 9 for realizing circuit connectivity.

[0026] In this embodiment, referring to Figure 1 and Figure 6 A plurality of welding holes are provided on the adapter circuit board 8, and a plurality of pins on the plug-in end of the straight plug-in electrical connector 4 correspond one to one with the plurality of holes, and the plurality of pins on the plug-in end of the straight plug-in electrical connector 4 are respectively welded in the corresponding welding holes.

[0027] In order to minimize the gap between the plug-in end of the plug-in type electrical connector 4 and the rectangular hole 13, in this embodiment, Figure 3 A mounting groove 14 is provided on the outer surface of the end cover 2, and the rectangular hole 13 is located in the middle position of the bottom wall of the mounting groove 14. A C-shaped block 10 is snap-fitted into the mounting groove 14, and the cavity length of the C-shaped block 10 is smaller than the length of the rectangular hole 13; first, the plug-in end of the straight plug-in electrical connector 4 is passed through the rectangular hole 13, and then the C-shaped block 10 is placed and snap-fitted into the mounting groove 14. The flange structure of the straight plug-in electrical connector 4 is blocked by the C-shaped block 10, so that the C-shaped block 10 partially covers the gap between the plug-in end of the straight plug-in electrical connector 4 and the rectangular hole 13, thereby achieving the purpose of reducing the gap between the plug-in end of the straight plug-in electrical connector 4 and the rectangular hole 13.

[0028] In this embodiment, referring to Figure 5 A sealing rubber layer 12 is provided around the rectangular hole 13 on the inner side of the end cover 2. The sealing rubber layer 12 covers the root of the pin of the plug-in electrical connector 4. The sealing rubber layer 12 blocks the gap between the plug-in electrical connector 4 and the end cover 2, the gap of the plug-in electrical connector 4 itself, and the gap between the screw 11 and the end cover 2, thereby ensuring the sealing ability of the entire installation device.

[0029] The installation process of the present invention is as follows: first, the connection circuit board 7 is fixedly mounted on the base 3, then the base 3 is installed in the housing 1, and the base 3 is fastened to the housing 1 by bolts 15. The adapter circuit board 8 is suspended in the housing 1, and the connection circuit board 7 and the adapter circuit board 8 are connected by a flexible electrical connection belt 9 to achieve circuit communication between the adapter circuit board 8 and the connection circuit board 7; The plug-in end of the straight plug-in electrical connector 4 is passed through the rectangular hole 13 and plugged into the adapter circuit board 8, the adapter circuit board 8 is fixed to the straight plug-in electrical connector 4, and the C-shaped block 10 is assembled in the mounting groove 14. Assembly holes are provided on the flange structure of the straight plug-in electrical connector 4, the C-shaped block 10 and the bottom wall of the mounting groove 14. The screws 11 are sequentially passed through the flange structure of the straight plug-in electrical connector 4, the C-shaped block 10 and the bottom wall of the mounting groove 14 to realize the assembly of the straight plug-in electrical connector 4 and the C-shaped block 10. The C-shaped block 10 partially covers the gap between the plug-in end of the straight plug-in electrical connector 4 and the rectangular hole 13. The sealing layer 12 is poured into the end cover 2 and completely covers the root of the pin of the plug-in end of the straight plug-in electrical connector 44. The sealing layer 12 will block the gap between the straight plug-in electrical connector 4 and the end cover 2, the gap of the straight plug-in electrical connector 4 itself, and the gap between the screw 11 and the end cover 2. Then install the end cover 2 on the outer shell 1. A sealing ring 5 is provided on the end cover 2. The connection between the end cover 2 and the outer shell 1 is sealed by the sealing ring 5. Then install the pressure ring 6 into the gap formed by the outer shell 1 and the end cover 2. The pressure ring 6 presses the sealing ring 5 to further improve the tightness and connection stability of the outer shell 1 and the end cover 2; complete the assembly of the entire device, and finally fill the entire machine with nitrogen to protect the internal components and mechanisms.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A miniaturized safety and solution device, comprising a housing (1), a base (3) provided in the housing (1), and an end cover (2) installed at the opening of the housing (1), characterized in that: A connecting circuit board (7) is provided on the machine base (3), a plug-in type electrical connector (4) is installed on the end cover (2), and a circuit switching component is provided between the plug-in type electrical connector (4) and the connecting circuit board (7).

2. The miniaturized solution-safety device according to claim 1, characterized in that: The circuit adapter assembly comprises an adapter circuit board (8) and a flexible electrical connection belt (9); the adapter circuit board (8) is arranged inside the housing (1); the plug-in end of the plug-in electrical connector (4) is plugged into the adapter circuit board (8); and the two ends of the flexible electrical connection belt (9) are respectively connected to the adapter circuit board (8) and the connection circuit board (7).

3. The miniaturized solution-safety device according to claim 2, wherein: Printed conductors are arranged in the flexible electrical connection belt (9).

4. The miniaturized solution-safety device according to claim 1, wherein: A rectangular hole (13) is provided on the end cover (2), and the plug-in end of the plug-in type electrical connector (4) is inserted into the rectangular hole (13), with a gap existing between the plug-in end of the plug-in type electrical connector (4) and the rectangular hole (13).

5. The miniaturized solution-safety device according to claim 4, characterized in that: The outer surface of the end cover (2) is provided with a mounting groove (14), the rectangular hole (13) is located in the middle of the bottom wall of the mounting groove (14), and a C-shaped block (10) is snap-fitted into the mounting groove (14), wherein the cavity length of the C-shaped block (10) is smaller than the length of the rectangular hole (13).

6. The miniaturized solution-safety device according to claim 4, characterized in that: A sealing rubber layer (12) is provided on the inner side of the end cover (2) around the rectangular hole (13), and the sealing rubber layer (12) covers the base of the pin of the plug-in end of the straight-plug electrical connector (4).

7. The miniaturized solution-safety device according to claim 2, characterized in that: The adapter circuit board (8) is provided with a plurality of welding holes, and the plurality of pins on the plug-in end of the straight plug-in type electrical connector (4) correspond one-to-one to the plurality of welding holes, and the plurality of pins on the plug-in end of the straight plug-in type electrical connector (4) are respectively welded in the corresponding welding holes.

8. The miniaturized solution-safety device according to claim 1, wherein: A gap is formed around the connection between the housing (1) and the end cover (2), and a sealing ring (5) is provided in the gap.

9. The miniaturized solution-safety device according to claim 8, characterized in that: A pressure ring (6) is also provided at the gap, and the pressure ring (6) is tightly pressed against the sealing ring (5).

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