Compact fire working device for special spatial devices

Abstract

The application discloses a compact pyrotechnic actuating device of a special device in space, and is characterized by comprising sequentially connected activation components, transmission components, plug components, socket components and output components, wherein the activation components are connected with a pyrotechnic electric connector, an activation signal is input through the pyrotechnic electric connector to activate the activation components, the transmission components are driven to push forward by a compression spring structure, the plug components are driven to move, the first contactors in the plug components are brought into contact with the second contactors of the socket components, the signal is transmitted to the output components, and signal transmission is realized. Through a clever overall structural design idea, miniaturization and light weight of the product are realized, and safety and reliability in production, storage, transportation and use are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to a compact pyro-actuator, in particular, a compact pyro-actuator for special space devices. BACKGROUND

[0002] The compact pyro-actuator for special space devices is a pyro-actuator loaded on a space platform to perform special space tasks. When performing the tasks, the pyro-actuator is activated, unlocked, expanded, separated and propelled through a certain current, so as to meet the performance requirements (signal on or off) of the special space devices and the requirement of high current signal output.

[0003] Due to the loading capacity limitation of the space platform, the matched components must meet the requirements of miniaturization and light weight. The conventional design scheme mostly adopts the working principle of pyrotechnics. The structural design is mainly divided into three parts, namely, a detonator, a pyro-actuator and an output device. The core component of the detonator adopts a design scheme of a semiconductor bridge plug. After the product is powered on, the semiconductor bridge rapidly heats, vaporizes and forms plasma discharge in the semiconductor vapor, heats the ignition powder, and when the temperature reaches the ignition point of the ignition powder, the ignition powder ignites to transmit energy. The pyro-actuator is activated, unlocked, expanded, separated and propelled, so that the contact in the contact component of the pyro-actuator is disconnected or connected with the contact in the output device, so as to meet the performance requirements of the special space devices. Since the semiconductor bridge is a microelectronic pyrotechnics, it mainly relies on the heat energy generated by the ignition of the powder to convert into kinetic energy. The use, storage and transportation of the pyrotechnics have strict requirements, otherwise there will be safety and failure risks. At the same time, for such small energy pyrotechnics, the bridge / agent interface requires high, the composition, ratio, particle size and charge density of the agent all affect the sensitivity and power of the pyrotechnics; the appropriate sensitivity and appropriate power of the pyrotechnics are to ensure the safety and reliability in use. If the sensitivity of the pyrotechnics is too high, it is difficult to ensure the safety of the pyrotechnics in the process of manufacturing, transportation, storage and service handling, and if the sensitivity is too low, it is difficult to ensure the reliable action of the ammunition; the power of the pyrotechnics is the size of the output energy, such as too large power will cause safety decline of the use system, and too small power will reduce the action reliability of the use system. The output device adopts a conductor and a plastic material which are pressed into one body. The conductor and the wire output the signal through welding, and the quality and consistency of the welding cannot be separated from the skill level of the operator. At the same time, the output signal in the output component adopts a spring sheet type point, surface or line contact mode, which has the risk of unreliable contact.

[0004] As can be seen from the above, the design of the pyro-actuator for special space devices by using the principle of pyrotechnics has great uncertainty in product performance, reliability, safety and quality consistency. SUMMARY

[0005] In order to solve the technical problems existing in the prior art, the application provides a compact fire working actuating device of a special space device.

[0006] The compact fire working actuating device of the special space device comprises sequentially connected activation components, transmission components, plug components, socket components and output components, wherein the activation components are connected with a fire working electrical connector, an activation signal is input through the fire working electrical connector to activate the activation components, the transmission components are driven forward by a compression spring structure to push the plug components, the first contact in the plug components is brought into contact with the second contact in the socket components to realize signal transmission.

[0007] The activation components comprise input signal components, a fuse and an elastic clamp, the front end of the input signal components is connected with the fire working electrical connector through a cable to transmit the activation signal, the rear end is connected with a shell, and the middle end of the input signal components is fixedly connected with both ends of the fuse to transmit the input activation signal to the fuse, the fuse is wound on the opening end of the elastic clamp to be fixed with the piston of the transmission components, when the fuse receives the activation signal, the fuse is melted by using the heating principle of the fuse, the fuse wound on the opening end of the elastic clamp is scattered under the elastic force of the elastic clamp, and the transmission rod in the fixed transmission components is unlocked.

[0008] The transmission components comprise a transmission rod, a compression spring and a piston, the compression spring is arranged between the activation components and the transmission rod and is connected with the piston, the piston is pushed by the compression spring to drive the plug components to move forward, the first contact in the plug components is brought into contact with the second contact in the socket components to realize signal output, and the piston and the base in the plug components are integrated.

[0009] The plug components comprise a first base and a first contact, the first base is provided with a potting cavity filled with glue at the rear end for fixing the first contact, the first base is provided with a through hole at the front end, the first contact passes through the through hole and is brought into contact with the second contact, the first contact is in a twisted structure, and multiple-point contact is realized when the first contact is brought into contact.

[0010] The socket components comprise a second base and a second contact, the first base is provided with a through hole for fixing the second contact at the rear end face, the second contact is extended out of the rear end of the second base through the through hole and brought into contact with the first contact, and the inner diameter of the second contact is matched with the outer diameter of the first contact; the second base is provided with a through hole matched with the plug components at the front end, and the second base, the socket components and the output components are integrated.

[0011] The application has the following beneficial effects:

[0012] 1. The ingenious overall structural design idea realizes the miniaturization and light weight of the product, and the safety and reliability in production, storage, transportation and use.

[0013] 2. Through reasonable material selection and structural design, the light weight of the product is realized;

[0014] 3. Through the design principle of activating structure, the mechanical activation principle is realized to replace the principle of gunpowder activation, and the safety and reliability of product production, storage, transportation and use are improved;

[0015] 4. Through the structural design principle of multi-point contact of the contact part, the stable and reliable contact of the product is realized, and the reliability of signal transmission is improved;

[0016] 5. Through the reasonable structural design of the input part, the reliability and consistency of the quality of the product are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure diagram of signal disconnection before activation of the embodiment of the application;

[0018] Figure 2 It is the structure diagram of signal connection after activation of the embodiment of the application;

[0019] Figure 3 It is Figure 1 The structure diagram of the activation part in the embodiment.

[0020] Figure 4 It is Figure 1 The structure diagram of the transmission part in the embodiment.

[0021] Figure 5 It is Figure 1 The structure diagram of the plug part in the embodiment.

[0022] Figure 6 It is Figure 1 The structure diagram of the socket part in the embodiment.

[0023] In the figure: 1, activation part; 1-1, input signal part; 1-2, fuse; 1-3, elastic clamp; 2, transmission part; 2-1, transmission rod; 2-2, compression spring; 2-3, piston; 3, plug part; 3-1, first base; 3-2, first contact; 4, socket part; 4-1, second base 4-2, second contact; 5, shell part; 6, output part. EMBODIMENT

[0024] The technical scheme of the application will be further described below in combination with an embodiment shown in the accompanying drawings. EMBODIMENT

[0025] The compact fire working actuating device of the space special device comprises an activating component 1, a transmission component 2, a plug component 3, a socket component 4, a shell component 5 and an output component 6. The activating component 1 is connected with a fire product electric connector. When the space special device performs a space task, the activating component 1 is activated, unlocked and unfolded by a rated current, the transmission component 2 drives the plug component 3 to move, a first contact 3-2 in the plug component 3 is in contact with a second contact 4-2 in the socket component 4, a contact signal is transmitted to the output component 6, and thus signal transmission is realized, as shown in Figure 1 and Figure 2 .

[0026] The activating component 1 comprises an input signal component 1-1. The front end of the input signal component 1-1 transmits an activation signal input from a super-micro fire product electric connector through a cable, the rear end is fixed to the shell, the middle end fixes two ends of a fuse 1-2, and the activation signal is transmitted into the fuse 1-2. The fuse 1-2 is wound at the opening end of an elastic clamp 1-3, so that the elastic clamp 1-3 is deformed to fix a piston 2-3 of the transmission component 2. When the fuse 1-2 receives the activation signal, the fuse is melted by using the heating principle of the fuse, and the fuse is melted after reaching a certain requirement. The fuse 1-2 wound at the opening end of the elastic clamp 1-3 is scattered due to the elastic force of the elastic clamp 1-3, the front end of the elastic clamp 1-3 is unfolded, and the transmission rod 2-1 in the transmission component fixed is unlocked, as shown in Figure 2 and Figure 3 . The elastic performance of the elastic clamp is ensured by reasonable material selection and structural design.

[0027] The transmission component 2 comprises a transmission rod 2-1, a compression spring 2-2 and the piston 2-3. The compression spring 2-2 is designed according to the mechanical properties and environmental properties of the product, and mainly realizes the propulsion function of the product. When the product is activated, the piston 2-3 is pushed forward by the mechanical properties of the compression spring to drive the plug component 3 forward, the first contact 3-2 in the plug component 3 is in contact with the second contact 4-2 of the socket component 4, and the contact signal is output. The piston 2-3 and the first base 3-1 in the plug component 3 are designed as a whole to ensure the compactness of the product, as shown in Figure 4 .

[0028] The plug component 3 mainly realizes the reception and transmission of signals. The design structure mainly comprises the first base 3-1 and the first contact 3-2. The front end of the first base 3-1 is designed to install a hole of the first contact 3-2, and the rear end is designed to be filled with a cavity, and the glue is fixed to the first contact 3-2. The first contact 3-2 is designed as a twisted contact structure. When the contact is in contact, multi-point contact is realized, so that the reliability of the product contact signal is greatly improved. The structure design principle adopts the structure principle of the connector, as shown in Figure 5 .

[0029] The socket component 4 comprises a second base 4-1, a hole for fixing a second contact 4-2 is formed in the rear end face of the second base 4-1, the inner diameter of the second contact 4-2 matches the outer diameter of the plug 3-2, the signal output is fixed by adhesive and stretched out from the rear end of the second base 4-1 through a cable, a hole matched with the plug component 3 is arranged in the front end of the second base 4-1, the second base 4-1 is connected with the shell component 5 and the output component 6, and is made of non-metal material, so that the light weight, small size and miniaturization of the product are ensured. Figure 6

[0030] The present application realizes the requirements of product function, performance and miniaturization and light weight through ingenious structural design idea and structure design and the related performance of materials, the specific application content is that the input activation signal of the initiating explosive electrical connector is used to replace the explosive to realize the unlocking and unfolding of the product, that is, the elastic performance and electric heating energy of the material are used to design the corresponding structure design, the unlocking and unfolding of the product are realized, then the transmission component is driven forward by the structure performance of the compression spring, so that the output component is turned on or turned off. The structure design of the compression connection and glue sealing technology of the connector is used to improve the reliability of the output signal and the consistency of the product quality, so that the miniaturization and light weight of the product are realized. The connector structure design technology is used for the contact component, the multiple-point contact of the contact is realized, and the reliability of the product contact is improved. The specific structure and working principle of the product are as follows: after the activation end of the product is electrified, the fuse is heated and fused, the elastic clamp is opened, the transmission component is pushed forward by the force of the compression spring, the plug and the socket are connected or disconnected, the output signal is turned on or turned off, and the function and performance requirements of the special device in space are met.​

Claims

1. A compact pyrotechnic actuation device for a space special device, characterized by: The application relates to a signal transmission device for initiating explosive devices, which comprises sequentially connected activating components, transmission components, plug components, socket components and output components. The activating components comprise input signal components, fuses and elastic clamps, the front ends of the input signal components are connected with the explosive device electric connectors through cables to transmit the activating signals, the rear ends of the input signal components are connected with the shells, the middle ends of the input signal components are fixed with the two ends of the fuses to transmit the input activating signals to the fuses, the fuses are wound on the opening ends of the elastic clamps to be fixed with the pistons of the transmission components, when the fuses receive the activating signals, the fuses are melted according to the heating principle, the fuses wound on the opening ends of the elastic clamps are scattered under the elastic force of the elastic clamps, the front ends of the elastic clamps are unfolded, and the transmission rods in the transmission components are unlocked. The transmission components comprise transmission rods, compression springs and pistons, the compression springs are arranged between the activating components and the transmission rods and are connected with the pistons, the pistons are pushed by the compression springs to drive the plug components to move forward, the first contact pieces in the plug components are in contact with the second contact pieces in the socket components to transmit the signals, the pistons are integrated with the bases in the plug components. The plug components comprise first bases and first contact pieces, the first bases are provided with pouring cavities filled with glue at the rear ends to fix the first contact pieces, the first bases are provided with through holes at the front ends, the first contact pieces pass through the through holes to be in contact with the second contact pieces, the first contact pieces are in the shape of twisted threads, and multiple points are contacted when the first contact pieces are in contact. The socket components comprise second bases and second contact pieces, the first bases are provided with through holes for fixing the second contact pieces at the rear end faces, the second contact pieces pass through the through holes to extend from the rear ends of the second bases to be in contact with the first contact pieces, the inner diameters of the second contact pieces match the outer diameters of the first contact pieces, the second bases are provided with through holes matched with the plug components at the front ends, and the second bases are integrated with the shell components and the output components.

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