A manual switching mechanism for the working or testing state of an explosive device

Abstract

A manual conversion mechanism for the working or testing state of an pyrotechnic device comprises a shell and a key, wherein a first socket and a second socket are provided on opposite sides of the shell, a bracket is provided between the first socket and the second socket, a working plug and a test plug are fixedly connected on two parallel sides of the bracket, the working plug is coupled to the first socket, and the test plug is coupled to the second socket, a boss is provided at the upper end of the bracket, a mounting hole is provided on the shell, a locking tongue which rotates in cooperation with the key is provided in the mounting hole, the lower end of the locking tongue is connected to a rocker arm, and a slide slot hole for driving the boss to move is provided on the rocker arm, so that the conversion of the working or testing state of the pyrotechnic device can be completed quickly and simply. The conversion mechanism has the advantages of simple operation, low cost, system independence, short operation time, self-locking of the system after state conversion, safe and reliable service, and can be well applied to airborne weapons.

Description

Technical Field

[0001] The invention belongs to the field of airborne weapon control systems and projectile structures, and in particular relates to a manual conversion mechanism for working or testing states of pyrotechnics. Background Art

[0002] Missile pyrotechnics have the characteristics of high capacity density, high danger, and high safety requirements. It is required that the pyrotechnics on the missile and the missile-borne control system remain in an open circuit state before the missile is launched; and during transportation, storage or testing, the pyrotechnics on the missile and the missile-borne control system are kept in a short circuit state. At present, most missiles adopt a centralized control method, that is, the positive and negative circuit sources of each pyrotechnic on the missile are led to a unified short-circuit and open-circuit protection plug, and the service state uses a protection plug to connect it; before the missile is launched, the protection plug is replaced with a working plug. This kind of replacement method often sets an operation window on the missile wall, and the launch preparation time is long; for airborne missiles, it is generally necessary to complete the replacement of the plug before hanging the bomb, which increases the safety risks during the hanging process.

[0003] Invention patent CN101915181 discloses a pyrotechnic control device, which solves the launch preparation time of opening a window in the missile wall to replace the plug to a certain extent. However, the device uses a motor as a drive, and requires external instructions during the pyrotechnic state conversion process. The structure is complex and the cost is high. For UAV airborne weapons, the usability is low. Therefore, in order to solve the shortcomings in the state conversion of pyrotechnics in airborne weapons, a manual pyrotechnic working or test state conversion mechanism is designed. It is very important to complete the conversion of the pyrotechnic working and test states through quick and simple operations while pulling out the hanging safety pin after the missile is installed and before the carrier aircraft takes off. Summary of the invention

[0004] The present invention provides a manual conversion mechanism for the working or testing state of an pyrotechnic device, which can quickly and simply complete the conversion of the working or testing state of an pyrotechnic device. The conversion mechanism has the advantages of simple operation, low cost, system independence, short operation time, self-locking of the system after state conversion, safe and reliable service, and can be well applied to airborne weapons.

[0005] A manual conversion mechanism for the working or testing state of an pyrotechnic device comprises a shell and a key, wherein a first socket and a second socket are provided on opposite sides of the shell, a bracket is provided between the first socket and the second socket, a working plug and a test plug are fixedly connected on two parallel sides of the bracket, the working plug is coupled to the first socket, and the test plug is coupled to the second socket, a boss is provided at the upper end of the bracket, a mounting hole is provided on the shell, a lock tongue which rotates in cooperation with the key is provided in the mounting hole, the lower end of the lock tongue is connected to a rocker arm, and the rocker arm is provided with a slide slot hole for driving the boss to move.

[0006] Furthermore, a linear rail for parallel sliding of the bracket is also provided in the shell.

[0007] Furthermore, a handle opening is provided at the lower end of the locking tongue, and a handle rod inserted into the handle opening is provided on the rocker arm.

[0008] Furthermore, the rocker arm is in the shape of an elongated strip, the slide slot hole is arranged at one end of the rocker arm, an anti-rotation pin is arranged at the other end of the rocker arm, a first card slot and a second card slot for positioning the anti-rotation pin are arranged at the lower end of the mounting hole, and an elastic component for retracting and extending the lock tongue is arranged in the mounting hole.

[0009] Furthermore, the elastic component is a spring, the spring is sleeved on the lock tongue, and the spring is installed in the installation hole through a spring cap.

[0010] Furthermore, the key is provided with a protrusion, and the shell is provided with a notch that matches the protrusion.

[0011] Furthermore, the upper end surface of the shell is a curved surface.

[0012] Furthermore, the upper end surface of the shell is provided with a mark for marking the rotation direction of the key.

[0013] Furthermore, a cover plate is installed at the bottom of the shell.

[0014] Furthermore, a warning tag is hung on the key.

[0015] The manual switching mechanism for the working or testing state of an explosive device proposed by the present invention has the following advantages:

[0016] 1. Easy to operate. Just follow the directions indicated by the signs and turn the switch to complete the pyrotechnic work or test status conversion operation.

[0017] 2. Small size, low cost, reasonable conversion mechanism structure, easy to manufacture;

[0018] 3. The system is independent, does not require external power supply, and has no power consumption;

[0019] 4. The operation time is short, just twist in the marked direction and the conversion is completed instantly;

[0020] 5. The system is self-locking after state conversion, and the service is safe and reliable, which can be well applied to airborne weapons;

[0021] 6. Ensure that the pyrotechnics on the missile are in working condition when the key is removed to avoid misoperation before the missile takes off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the cross-sectional structure of the manual conversion mechanism of the pyrotechnic device in the working or testing state;

[0023] Figure 2 It is a three-dimensional structural diagram of the key and housing of the manual switching mechanism of the pyrotechnic device in the working or testing state;

[0024] Figure 3 It is a schematic diagram of the explosion structure of some parts inside the housing of the manual conversion mechanism of the pyrotechnic device in working or testing state;

[0025] Figure 4 It is a schematic diagram of the explosion structure of some components inside the shell of the manual conversion mechanism of the working or testing state of the pyrotechnic device and the shell installation structure.

[0026] Wherein: 1-housing, 2-lock tongue, 3-rocker arm, 4-bracket, 5-spring, 6-spring cap, 7-linear rail, 8-key, 9-cover plate, 10-first socket, 11-second socket, 12-working plug, 13-test plug, 14-mounting hole, 15-slide hole, 16-boss, 17-handle mouth, 18-handle rod, 19-elastic component, 20-anti-rotation pin, 21-first card slot, 22-second card slot, 23-bump, 24-notch, 25-arc surface, 71-slider, 72-track, 241-stop position, 242-extraction position. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Embodiment 1:

[0029] A manual conversion mechanism for the working or testing state of an pyrotechnic device comprises a shell and a key, wherein a first socket and a second socket are provided on opposite sides of the shell, a bracket is provided between the first socket and the second socket, a working plug and a test plug are fixedly connected on two parallel sides of the bracket, the working plug is coupled to the first socket, and the test plug is coupled to the second socket, a boss is provided at the upper end of the bracket, a mounting hole is provided on the shell, a lock tongue which rotates in cooperation with the key is provided in the mounting hole, the lower end of the lock tongue is connected to a rocker arm, and the rocker arm is provided with a slide slot hole for driving the boss to move.

[0030] In this embodiment, the housing is a rectangular body, the bracket is a rectangular body, the working plug and the test plug are fixedly connected to the two parallel sides of the bracket by fastening screws, the other two parallel sides of the bracket are installed with clearance fit to the inner side surface of the housing, and the bracket is made of insulating material. In another embodiment, the bracket is a non-insulating material, the lower end of the lock tongue is fixedly connected to the rocker arm by fasteners, the slide slot hole is a waist-shaped hole, the key is turned to rotate, the boss slides in the slide slot hole of the rocker arm, and then the rocker arm drives the bracket to move horizontally, inserting the test plug into the second socket; the key is turned to rotate in the opposite direction, the rocker arm drives the bracket to move horizontally in the opposite direction, and the test plug is pulled out of the second socket, and the working plug is inserted into the first socket at the same time, so that the working plug is coupled with the first socket and the test plug is disconnected from the second socket. In another embodiment, the lock tongue and the rocker arm are integrally formed, and a linear track for parallel sliding of the bracket is also provided in the housing, the resistance of turning the key is smaller, and the precision of horizontal movement of the bracket is higher, which is convenient for the alignment and matching insertion of the working plug and the first socket and the test plug and the second socket, and convenient manual operation, and the manual conversion of the working or testing state of the pyrotechnic can also be realized by turning the key.

[0031] Embodiment 2:

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a manual conversion mechanism for the working or testing state of an pyrotechnic device includes a shell and a key, a first socket and a second socket are provided on opposite sides of the shell, a bracket is provided between the first socket and the second socket, a working plug and a test plug are fixedly connected on two parallel sides of the bracket, the working plug is coupled to the first socket, and the test plug is coupled to the second socket, a boss is provided at the upper end of the bracket, a mounting hole is provided on the shell, a lock tongue that rotates in cooperation with the key is provided in the mounting hole, the lower end of the lock tongue is connected to a rocker arm, and the rocker arm is provided with a slide slot hole for driving the boss to move.

[0033] The housing is also provided with a linear track for the bracket to slide in parallel. In this embodiment, there are two linear tracks, which include a slider and a track, the track is fixedly connected to the housing by countersunk screws, and the slider is fixedly connected to the bracket by screws.

[0034] A handle opening is arranged at the lower end of the lock tongue, and a handle rod inserted into the handle opening is arranged on the rocker arm, and the lock tongue and the rocker arm do not rotate relative to each other.

[0035] The rocker arm is in the shape of an elongated strip, the slide slot hole is arranged at one end of the rocker arm, an anti-rotation pin is arranged at the other end of the rocker arm, a first card slot and a second card slot for positioning the anti-rotation pin are arranged at the lower end of the mounting hole, and an elastic component for retracting and extending the lock tongue is arranged in the mounting hole.

[0036] In this embodiment, the elastic component is a spring, which is sleeved on the lock tongue. The spring is installed in the mounting hole through a spring cap, and the spring cap and the mounting hole are connected through a threaded structure, wherein the spring cap is provided with an external thread, and the mounting hole is provided with an internal thread matching the external thread. In another embodiment, the spring cap and the mounting hole are connected through a snap-fit ​​structure.

[0037] like Figure 2 As shown, the key is provided with a protrusion, and the housing is provided with a notch that matches the protrusion. In this embodiment, the notch is provided with a locking position and a withdrawal position. In the pyrotechnic test state, the protrusion is locked into the locking position of the notch under the action of the spring force, and the key cannot be pulled out. Only when the key is switched to the pyrotechnic working state, the key can be pulled out from the withdrawal position of the notch. The above design can ensure that the pyrotechnic on the missile is in the working state when the key is pulled out, avoiding misoperation before the missile takes off.

[0038] like Figure 4 As shown, the rocker arm is in the shape of an elongated strip, the slide slot hole is arranged at one end of the rocker arm, and an anti-rotation pin is arranged at the other end of the rocker arm. The lower end of the mounting hole is provided with a first card slot and a second card slot for positioning the anti-rotation pin. After the working plug is plugged into the first socket, the anti-rotation pin is inserted into the first card slot under the action of a spring force, so as to achieve the purpose of self-locking after the working plug is plugged into the first socket, thereby ensuring a reliable connection.

[0039] When it is necessary to switch to the test state, press down the key to overcome the spring force, push the anti-rotation pin on the rocker arm out of the first slot, turn the key, drive the rocker arm to rotate through the lock tongue, and the bracket is converted into a linear motion along the linear track under the rotation of the rocker arm. The working plug is separated from the first socket, and the key is further turned, the test plug is plugged into the second socket, the boss of the key is stuck in the stop position of the slot, and the anti-rotation pin is stuck in the second slot, making the connection in the test state more stable. When it is necessary to switch to the working state again, press down the key and rotate it in the opposite direction to pull the key out from the withdrawal position. The anti-rotation pin is inserted into the first slot under the action of the spring force to achieve self-locking of the pyrotechnic in the working state.

[0040] The upper end surface of the shell is an arc surface, which is the same shape as the elastic wall and is installed on the elastic wall by screws.

[0041] The upper end surface of the housing is provided with a mark (not shown in the figure) for marking the rotation direction of the key, so as to facilitate identification of the rotation direction during manual operation.

[0042] A cover plate is installed at the bottom of the housing to isolate the internal components of the housing from the outside, thereby enhancing the overall safety of the conversion mechanism and extending the service life of the rotating mechanism.

[0043] Embodiment 3:

[0044] A manual conversion mechanism for the working or testing state of an pyrotechnic device comprises a shell and a key, wherein a first socket and a second socket are provided on opposite sides of the shell, a bracket is provided between the first socket and the second socket, a working plug and a test plug are fixedly connected on two parallel sides of the bracket, the working plug is coupled to the first socket, and the test plug is coupled to the second socket, a boss is provided at the upper end of the bracket, a mounting hole is provided on the shell, a lock tongue which rotates in cooperation with the key is provided in the mounting hole, the lower end of the lock tongue is connected to a rocker arm, and the rocker arm is provided with a slide slot hole for driving the boss to move.

[0045] The rocker arm is in the shape of an elongated strip, the slide slot hole is arranged at one end of the rocker arm, an anti-rotation pin is arranged at the other end of the rocker arm, a first card slot and a second card slot for positioning the anti-rotation pin are arranged at the lower end of the mounting hole, and an elastic component for retracting and extending the lock tongue is arranged in the mounting hole.

[0046] The elastic component is a spring, which is sleeved on the lock tongue and installed in the mounting hole through a spring cap. A linear rail for the bracket to slide parallel is also provided in the housing. A handle is provided at the lower end of the lock tongue, and a handle rod inserted into the handle is provided on the rocker arm. In this embodiment, after the handle rod is inserted into the handle, it is fixedly connected by a fastener. In another embodiment, the handle is interference-fitted with the handle, and the handle is pressed into the handle, which can also be fixedly connected. The rocker arm and the lock tongue are manufactured separately and then assembled to facilitate the assembly of the spring and the spring cap.

[0047] The upper end surface of the shell is an arc surface, and a mark for marking the rotation direction of the key is provided on the upper end surface of the shell. A cover plate is installed at the bottom of the shell.

[0048] A warning tag is hung on the key. In this embodiment, the warning tag is a red ribbon to ensure correct operation, and the words "unplug before takeoff" are printed on the red ribbon to avoid forgetting the operation.

Claims

1. A manual switching mechanism for the working or testing state of an explosive device, characterized in that It comprises a shell and a key, wherein a first socket and a second socket are arranged on opposite sides of the shell, a bracket is arranged between the first socket and the second socket, a working plug and a test plug are fixedly connected to two parallel sides of the bracket, the working plug is coupled with the first socket, and the test plug is coupled with the second socket, a boss is arranged at the upper end of the bracket, a mounting hole is arranged on the shell, a lock tongue which rotates in cooperation with the key is arranged in the mounting hole, the lower end of the lock tongue is connected with a rocker arm, and a slide slot hole for driving the boss to move is arranged on the rocker arm; The lower end of the lock tongue is provided with a handle opening, and the rocker arm is provided with a handle rod inserted into the handle opening; The rocker arm is in an elongated strip shape, the slide slot hole is provided at one end of the rocker arm, an anti-rotation pin is provided at the other end of the rocker arm, a first card slot and a second card slot for positioning the anti-rotation pin are provided at the lower end of the mounting hole, and an elastic component for retracting the lock tongue is provided in the mounting hole; The key is provided with a protrusion, and the shell is provided with a notch matching with the protrusion.

2. The manual switching mechanism for the working or testing state of an explosive device according to claim 1 is characterized in that: A linear rail for the parallel sliding of the bracket is also arranged in the shell.

3. The manual switching mechanism for the working or testing state of an explosive device according to claim 1 is characterized in that: The elastic component is a spring, the spring is sleeved on the lock tongue, and the spring is installed in the installation hole through a spring cap.

4. The manual switching mechanism for the working or testing state of an explosive device according to claim 1 or 2, characterized in that: The upper end surface of the shell is a curved surface.

5. The manual switching mechanism for the working or testing state of an explosive device according to claim 4 is characterized in that: The upper end surface of the shell is provided with a mark for marking the rotation direction of the key.

6. The manual switching mechanism for the working or testing state of an explosive device according to claim 4 or 5, characterized in that: A cover plate is installed at the bottom of the shell.

7. The manual switching mechanism for the working or testing state of an explosive device according to claim 5, characterized in that: A warning tag is hung on the key.

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