KR20000025160A - Impact damper of opening panel - Google Patents

Abstract

PURPOSE: An impact damper is provided to guarantee the safety of important components attached to an opening panel from impact when the opening panel attached to an artificial satellite opens. CONSTITUTION: An impact damper contains an opening panel bracket(10) in a Y shape installed on the opening panel, a plate spring(20) having a U shape side section, a pyro-bracket(30) installed in a fixing panel(6), a pyro(40), a pyro-cover(50) and a fixing bar(60). A pyro controlling unit delivers an explosion control signal to the pyro when the fixing panel opens the opening panel. Then, explosion occurs in a hole formed in the lower part of the pyro. Also the fixing bar penetrated into the lower hole of the pyro is cut. Therefore, the opening panel opens by dynamic stability of the plate spring deformed with an initial load.

Description

Shock damper of deployment panel

The present invention relates to an impact damping device for a deployment panel, and more particularly, to an impact damping device for a deployment panel that ensures stability of an important component attached to the deployment panel from an impact generated during deployment of the deployment panel attached to a satellite. It is about.

In general, a satellite means an object that moves around the earth in parallel with the attraction force of the earth and the centrifugal force due to rotation. And satellites are satellites that orbit around the earth at regular intervals for human special purposes.

Various types of satellites are orbiting on Earth's orbit, such as low orbit satellites. Among these satellites, the low-orbiting satellite is a small artificial satellite that orbits the earth at about an hour and a half at an altitude of 500 km to 1500 km, and Korea has No. 1, No. 2, and No. 1 for multi-purpose satellites.

Such satellites can be broadly divided into a payload system and a satellite bus system. The interior of the mission vehicle is equipped with a number of devices for communicating with base stations installed in the earth or for earth exploration and weather forecasting. The bus system is composed of an orbital and attitude control device for accurate orbital turn of a satellite, a heat control device, a power meter, a propulsion system, a structural system, a remote measurement, and a command system. In addition, the satellite is designed to be light in weight so as to be accommodated inside the launching rocket and to withstand the launching environment conditions while taking into consideration the appearance and dimensions. Satellites are also manufactured with consideration given to the load during rocket launch, protection from a given environment, arrangement of components, and thermal and electrical paths.

In particular, a deployment panel such as a solar cell attached to a satellite is deployed in space by a pyro, which is a general deployment explosive device, after the satellite is put into orbit and attitude control is completed.

The fixing device using the leaf spring according to the prior art, as shown in Figure 1a and Figure 1b, includes a leaf spring (3) mainly used as a fixing member of the small electronic component or disassembly assembly (1, 2). The leaf spring 3 is formed so that the elastic piece 4 cut into a predetermined width is integrally projected. Such a leaf spring 3 is located at the engaging portion 5 of the disassembling assembly 1, 2 to be joined, and is used to fix each disassembling assembly 1, 2 with the elastic force of the elastic piece 4.

Also, a fixing method using the leaf spring 3 is used to fix the small electronic component. Using this method, the removal of parts is very easy and a large number of parts can be attached through an automated system in a short time, thereby reducing the work process and time.

However, since the fixing device using the leaf spring according to the prior art is simply used to fix small parts, it is extremely insignificant when applied to an effective shock damping device in ultra-precision applications such as satellites. Therefore, much research and efforts have been made on more effective impact damping devices applicable to satellites.

The present invention has been made in order to solve the problems of the prior art as described above, by coupling the leaf spring of the "U" side cross-sectional shape to one end of the fixing rod, and by fixing such leaf spring to the deployment panel, It is an object of the present invention to provide an impact damping device for a deployment panel that minimizes the amount of impact applied to the deployment panel when the furnace cuts the fixed rod to deploy the deployment panel.

Figure 1a is an exploded perspective view for explaining the configuration of the fixing device using a leaf spring according to the prior art.

Figure 1b is an enlarged perspective view for explaining an important part of the fixing device using the leaf spring shown in Figure 1a.

Figure 2 is a perspective view for explaining the configuration of the impact damping device of a deployment panel of the present invention.

3 is an enlarged perspective view for explaining an important part of the impact damping device of the deployment panel shown in FIG.

Figure 4 is an exploded perspective view for explaining the coupling relationship of the impact damping device of the deployment panel shown in FIG.

5 and 6 are a plan view for explaining the operation of the impact damping device of the deployment panel shown in FIG.

♠ Explanation of symbols on the main parts of the drawing ♠

10: development panel bracket 20: leaf spring

30: Pyro Bracket 40: Pyro

50: pyro cover 60: fixed rod

According to the present invention for achieving the object as described above, the development panel bracket formed to be mounted to the deployment panel, the pyro bracket formed to be mounted to the fixed panel, the development panel bracket and the pyro bracket Including a pyro cutting the connecting rod to connect, there is provided an impact damping device of the deployment panel for separating the deployment panel from the fixed panel during the explosion of the pyro. The impact damping device of the deployment panel includes: a fixing end having a plurality of fixing holes formed in the deployment panel bracket so as to attenuate the impact applied to the deployment panel by the explosion of the pyro; A through end that is bent at the fixed end and has a long hole corresponding to the diameter of the fixed rod; The through-end is bent to have a "U" side cross-sectional shape, characterized in that it comprises a leaf spring formed of a free end formed with a mounting hole for fixing the end of the fixing rod.

According to the present invention, the deployment panel bracket has a spring fixing part having a plurality of attachment holes to fix the leaf spring, an arc-shaped base having a fixing plate to be attached to the deployment panel, and a guide to guide the fixing rod. It is preferable that the locking step which has a hole is formed in one piece.

According to the present invention, the pyro bracket has a base plate for fixing the pyro with a pyro cover, a supporting jaw in contact with the locking jaw of the deployment panel bracket, and a fixing jaw for fixing the fixing rod. It is preferable to form.

In the following, with reference to the accompanying drawings a preferred embodiment of the impact damping device of a deployment panel according to the present invention will be described in detail.

Figure 2 is a perspective view for explaining the configuration of the impact damping device of the deployment panel of the present invention, Figure 3 is an enlarged perspective view for explaining the important parts of the impact damping device of the deployment panel shown in Figure 2, 4 is an exploded perspective view for explaining a coupling relationship of the impact damping device of the deployment panel shown in Figure 2, Figures 5 and 6 are plan views for explaining the operation method of the impact damping device of the deployment panel shown in FIG. .

In Figure 2, the impact damping device of the deployment panel according to an embodiment of the present invention is a "Y" shaped deployment panel bracket 10 formed to be mounted on the deployment panel 7 and the "U" side It has a leaf spring 20 having a cross section. In addition, the impact damping device of the deployment panel of the present invention, the pyro bracket 30, the pyro 40, the pyro cover 50, the fixed rod 60 formed to be mounted on the fixed panel (6) Has

The arc-shaped base portion 11 is formed integrally with the "Y" shaped development panel bracket 10. The base 11 is integrally formed with two fixing plates 12 and 13 having fixing holes to be fixed to the deployment panel 7. In addition, in the spring fixing portion 14 extending from the center of the base portion 11 to the right side, two attachment holes are formed at predetermined intervals in the longitudinal direction so that the leaf spring 20 can be fixed. At the end extending from the center of the base portion 11 to the left side, a locking jaw 15 formed vertically is formed. The locking step 15 is formed with a guide hole 16 for guiding the fixing rod (60).

The pyro bracket 30 has a base plate 31 having a bolt hole formed therein for fixing two general pyro 40 to the pyro cover 50. At the right end of the base plate 31, a supporting jaw 32 is formed to contact the engaging jaw 15 of the deployment panel bracket 10. In addition, a fixing jaw 33 having a hole necessary for fixing the fixing rod 60 and adjusting the tension of the fixing rod 60 is formed at the left end of the base plate 31.

The pyro 40 is electrically connected to the pyro control unit (not shown), and is configured to cut the fixing rod 60 in the hole 41 formed at the lower end in accordance with the electrical control signal.

As shown in Fig. 3, the leaf spring 20 having a "U" side cross section is a thin plate member made of beryllium-copper alloy material having a very high rigidity. The leaf spring 20 bends the free end 21 and the penetrating end 22 in a “U” shape, and then bends the fixed end 23 once more to form an acute angle with the penetrating end 22. It is manufactured to have spring stiffness of size. Then, the leaf spring 20 has a greater spring stiffness through the heat treatment process.

The free end 21 of the leaf spring 20 is formed with a mounting hole 24 through which the fixing rod can be fixed. In addition, the through hole 22 of the leaf spring 20 is formed with a long hole 25 in consideration of the movement in the vertical direction of the fixing rod. In addition, two fixing holes 26 corresponding to the attachment holes of the deployment panel bracket 10 are formed at the fixing end 23 of the leaf spring 20.

Hereinafter, the coupling relationship of the impact damping device of the deployment panel of the present invention as described in detail above will be described.

As shown in FIG. 4, the deployment panel bracket 10 is attached to the deployment panel 7 with a plurality of fixing bolts based on the axial direction of the fixing rod 60. The leaf spring 20 is fixed to the spring fixing portion 14 of the deployment panel bracket 10 by bolts and nuts.

Pyro bracket 30 is attached to the fixing panel 6 with a plurality of fixing bolts. The pyro 40 is fixed to the pyro bracket 30 by the pyro cover 50. The fixing rod 60 is inserted through the hole 41 formed at the lower end of the pyro 40. The left end of the fixing rod 60 is inserted into the hole of the fixing jaw 33 of the pyro bracket 30, and is coupled to the tension adjusting nut 70. The first stop nut 72 is coupled to the fixed bar 60 coupled to the coupling rod 60 at a predetermined distance away from the opposite end.

In order to fasten the deployment panel 7 to the fixed panel 6, the fixing rod 60 from one end of the first stop nut 72 to one end thereof is guided by the locking jaw 15 of the deployment panel bracket 10. Insert through the hole 16. Then, the second stop nut 73 is coupled to the fixing rod 60 penetrating the guide hole 16. Here, the first stop nut 72 and the second stop nut 73 are fixed to move toward the deployment panel 7 by the restoring force of the leaf spring 20 when the pyro 40 explodes. The safety distance is maintained so that the rod 60 does not directly impact the deployment panel 7. In addition, in order to couple the fixed rod 60 coupled as described above to the leaf spring 20, the end of the fixed rod 60 is inserted to penetrate through the long hole 25 of the through end 22 of the leaf spring 20. do. The operator applies a load to move the penetrating end 22 and the free end 21 of the leaf spring 20 toward the locking step 15 of the deployment panel bracket 10. Then, the operator inserts the end of the fixing rod 60 passing through the long hole 25 of the through end 22 through the mounting hole 24 of the free end 21. The end of such fixing rod 60 is fixed with a fixing nut 74. At this time, the leaf spring 20 is applied to the fixed rod 60 in the axial direction a tensile stress of a predetermined size. In addition, in order to more firmly couple the fixed panel 6 to the deployment panel 7, the tension adjusting nut 70 is tightened to a prescribed torque.

Hereinafter will be described a method of operating the shock damping device of the deployment panel of the present invention as described in detail above.

As shown in FIG. 5, the impact damping device of the deployment panel of the present invention includes a leaf spring 20 to fix the fixed panel 6 and the deployment panel 7. The through end 22 and the free end 21 of the leaf spring 20 are deformed in the direction in which the spring tension acts in the original shape.

As shown in FIG. 6, when the deployment panel 7 is deployed in the fixed panel 6, the pyro control unit sends an explosion control signal to the pyro 40. Explosion takes place in the hole formed at the lower end of the pyro 40. The fixed rod 60 installed to penetrate through the hole of the lower end of the pyro 40 is exploded in this way is cut. In such a case, the deployment panel 7 is developed by the restoring force of the leaf spring 20 deformed by applying an initial load. In addition, the fixed rod 60 coupled to the deployment panel bracket 10 of the deployment panel 7 temporarily retracts with the tension of the leaf spring 20, and performs a damping reciprocating motion forward and backward along the axial direction a. do. The damping reciprocation of the fixed rod 60 diffuses the impact energy to the outside and attenuates the impact energy transmitted to the deployment panel 7 at the time of explosion.

As described above, since the impact damping device of the deployment panel of the present invention fixes the flat rod connected to the flat panel and the fixed panel with a leaf spring, the contact panel between the flat panel and the fixed panel is in close contact with the flat panel. There is an advantage that can be combined effectively.

In addition, the impact damping device of the deployment panel of the present invention effectively attenuates the impact energy transmitted to the deployment panel with a leaf spring during deployment of the deployment panel using pyro, thereby preventing damage to important components attached to the deployment panel. There is an advantage.

In addition, the impact damping device of the deployment panel of the present invention has the advantage that the deployment of the deployment panel in the direction of the elastic force of the leaf spring, it is possible to ensure high reliability deployment of the deployment panel.

The technical idea of the impact damping device of the development panel of the present invention has been described above with reference to the accompanying drawings, but this is by way of example only and not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (3)

The development panel bracket 10 formed to be mounted to the development panel 7, the pyro bracket 30 formed to be mounted to the fixed panel 6, the development panel bracket 10 and the pyro bracket And a pyro 40 for cutting the fixed rod 60 connecting the 30, the deployment for separating the deployment panel 7 from the fixed panel 6 at the time of explosion of the pyro 40. In the impact damping device of the panel, Fixed end 23 formed with a plurality of fixing holes 26 to be fixed to the development panel bracket 10 so as to attenuate the impact applied to the deployment panel 7 by the explosion of the pyro 40 and; A through end 22 that is bent at the fixed end 23 and has a long hole 25 corresponding to the diameter of the fixed rod 60; Leaf spring 20 is bent in the through end 22 having a "U" side cross-sectional shape, the free end 21 formed with a mounting hole 24 for fixing the end of the fixing rod 60 Impact damping device of the deployment panel comprising a. The spring fixing part 14 having a plurality of attachment holes to fix the leaf spring 20 to the deployment panel bracket 10, and the fixing plate 12 to be attached to the deployment panel 7. An arc-shaped base portion 11 having a 13 and a locking projection 15 having a guide hole 16 to guide the fixing rod 60 are integrally formed. . According to claim 1 or 2, wherein the pyro bracket 30, the base plate 31 for fixing the pyro 40 to the pyro cover 50, and the engaging of the deployment panel bracket 10 Supporting jaw (32) in contact with the jaw (15), and a fixed jaw (33) for fixing the fixing rod (60) is formed of an impact damping device of the deployment panel, characterized in that formed integrally.