Switch structure

Abstract

Provided is a switch structure for a satellite that has a simplified configuration and can be easily assembled. 【Solution means】A switch structure that is housed inside the housing 10 of a satellite, extends in the longitudinal direction inside the housing 10, and can switch between the on state and the off state of the power supply by moving axially while one end is in contact with the power supply inside the satellite. The switch 40 extending in the longitudinal direction has a first switch 40A having a surface in contact with the power supply and a surface protruding in a direction perpendicular to the axial direction and in contact with the inner surface of the satellite housing, a second switch 40B that is integrally connected to the first switch 40A in the longitudinal direction and extends outside the housing with respect to the first switch, and a spring 60 that is disposed between a step formed in a part of the second switch in the axial direction and the inner wall of the housing 10 and biases the second switch 40B to the outside of the housing, thereby moving the switch to switch between the on state and the off state of the power supply.

Description

Technical Field

[0001] The present invention relates to a switch structure.

Background Art

[0002] When a rocket transports a satellite in space while accommodating the satellite, the power supply of the satellite is maintained in an off state. This is because if the power supply of the satellite is turned on during transportation, not only will it consume unnecessary power before being released from the rocket, but also the electromagnetic field and heat generated by the current etc. caused by the on state of the power supply may affect the operation of the rocket during transportation. To avoid this, until the satellite is released from the rocket, the power supply is maintained in an off state, and the power supply of the satellite is turned on after it is released from the rocket. As a technique for maintaining the power supply of the satellite in an off state during transportation by the rocket, for example, a radiator for satellite mounting as in Patent Document 1 is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Thus, while the power supply of the artificial satellite needs to remain off while the rocket is transporting it, if the power supply of the artificial satellite is not turned on when the artificial satellite is released from the rocket, the operation of the artificial satellite becomes impossible and the artificial satellite that has been transported and released becomes useless. For this purpose, the artificial satellite must have a function that ensures that the power supply is turned on when the artificial satellite is released from the rocket. In recent years, the miniaturization of artificial satellites has been progressing. Since artificial satellites have many functions, the mechanism for switching this power supply state is also required to be more compact and simplified, and to have a configuration that allows for easy assembly.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a switch structure for an artificial satellite that has a simplified configuration and can be easily assembled.

Means for Solving the Problems

[0006] According to one aspect of the present invention, there is provided a switch structure housed in the casing of an artificial satellite, extending in the longitudinal direction within the casing, and capable of switching between an on state and an off state of a power supply by axially moving while one end is in contact with the power supply within the artificial satellite. The switch extending in the longitudinal direction has a first switch having a surface in contact with the power supply and a surface protruding in a direction orthogonal to the axial direction and in contact with the inner surface of the casing of the artificial satellite, a second switch integrally connected to the first switch in the longitudinal direction and extending outside the casing with respect to the first switch, and a spring disposed between a step formed in a part of the axial direction of the second switch and the inner wall of the casing, and biasing the second switch to the outside of the casing to move the switch and switch between the on state and the off state of the power supply. The surface in contact with the inner surface of the housing of the first switch extends in the axial direction, and when the switch moves axially outward toward the outside of the housing by the biasing force of the spring, the power supply of the artificial satellite is turned on. There is provided a switch structure for an artificial satellite, which is characterized by the above.

[0007] According to one aspect of the present invention, The first switch has a connecting portion connected to the second switch, and an extending portion connected to the connecting portion, protruding in a direction perpendicular to the axial direction with respect to the connecting portion, and extending axially toward the outside of the housing, and the side surface of the extending portion is in contact with the inner surface of the housing. 。

[0013] According to one aspect of the present invention, there is provided a switch structure for switching the power state of a satellite, including a slide member that switches the power state of the satellite by moving axially outward from the housing, and a biasing member provided between the slide member and the housing, the biasing member biasing the slide member outward, and the slide member including an outer slide portion located on the outside and an inner slide portion connected to the inside of the outer slide portion, the inner slide portion having a connecting portion connected to the outer slide portion and an engaging portion protruding outward in a direction perpendicular to the axial direction with respect to the connecting portion, the engaging portion engaging with the surface of the housing to restrict rotation about the axial direction of the inner slide portion. The engaging portion includes an extending arm extending axially along the connecting portion, and the side surface of the extending arm engages with the surface of the housing. The switch structure is provided.

[0015] According to one aspect of the present invention, a housing groove is formed in the housing for accommodating the extension. Arm to be accommodated.

Advantages of the Invention

[0016] According to the present invention, there is provided a switch structure for a satellite that has a simplified configuration and can be easily assembled.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0018] Hereinafter, the switch device according to the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a satellite equipped with the switch device according to the first embodiment of the present invention. As shown in FIG. 1, the satellite is in the shape of a rectangular parallelepiped. The satellite 100 is released into space when the rocket reaches space. The switch structure in this embodiment turns off the power of the satellite at the time of rocket launch and turns on the power of the satellite 100 when it is released into space. The switch structure 1 is provided at a corner (part A in FIG. 1) of the satellite 100.

[0019] FIG. 2 is a perspective view showing the configuration of the switch structure in the power-off state according to the first embodiment of the present invention. FIG. 3 is a perspective view showing the configuration of the switch structure in the power-on state according to the first embodiment of the present invention.

[0020] As shown in FIGS. 2 and 3, the switch structure 1 in this embodiment includes a power switch 20 installed in a housing 10, a switch body 40, and a spring 60, and switches the on / off state of the power switch 20. As shown in FIG. 2, when stored inside the rocket, the switch body 40 is in a state of being pushed inside, and in this state, the satellite is off. Then, when it is released from the rocket into space. As shown in FIG. 3, the switch body 40 protrudes outward by the biasing force of the spring 60, and after a predetermined time elapses, the satellite switches to the on state.

[0021] As shown in FIGS. 2 and 3, the power switch 20 has a button 22 provided on the outer surface and a lever portion 30 extending downward. The button 22 is provided at a distance below the base end portion of the lever portion 30.

[0022] The lever portion 30 is formed in a plate shape with a constant width, and the upper end is connected to the housing of the power switch 20. The lever portion 30 extends downward from the housing, and a contact portion 31 is formed at the lower end. The portion of the lever portion 30 other than the contact portion 31 is flat, and the contact portion 31 is formed in an arc shape that protrudes toward the switch body 40 in a side view. The lever portion 30 extends while being in contact with the button 22.

[0023] The button 22 is provided so as to protrude from the surface of the housing of the power switch 20. The longitudinal section of the button 22 is arc-shaped. The power switch 20 switches between the on state and the off state of the power supply of the artificial satellite when the button 22 is pressed by the lever portion 30 due to the movement of the switch body 40.

[0024] Figures 4 and 5 are exploded perspective views of the switch body.

[0025] The switch body 40 extends in the longitudinal direction and has a second switch member 40B located on the outside and a first switch member 40A integrally connected in the longitudinal direction inside the second switch member 40B. As shown in FIGS. 2 and 3, the second switch member 40B extends outside the housing 10 more than the first switch member 40A.

[0026] As shown in FIGS. 4 and 5, the second switch member 40B has a columnar large-diameter portion 41 located on the outermost side, a columnar small-diameter portion 43 located on the innermost side, and a columnar middle-diameter portion 42 located between the large-diameter portion 41 and the small-diameter portion 43. The central axes of the large-diameter portion 41, the middle-diameter portion 42, and the small-diameter portion 43 coincide. A fitting hole 41A is formed in the outer end face of the large-diameter portion 41. In the present embodiment, since the switch body 40 is attached with a hexagon wrench, the fitting hole 41A is hexagonal. Further, a screw thread (spiral unevenness) is formed on the outer surface of the small-diameter portion 43.

[0027] The first switch member 40A has a connecting portion 47 connected to the small-diameter portion 43, a connection plate 48 connected to the end face of the connecting portion 47, and an extending portion 49 extending from the connection plate 48. The connecting portion 47 is cylindrical, and a cylindrical hole 47A opening to the outside is formed therein. A screw thread is formed on the inner surface of this hole 47A. In the following description, when referring to the radial direction, it means the direction perpendicular to the central axis of this connecting portion 47. The outer diameter of this connecting portion 47 is the same as the outer diameter of the middle-diameter portion 42 of the switch body 40.

[0028] The connection plate 48 is formed in a rectangular plate shape, and its center is attached so as to be displaced radially in one direction from the center of the connecting portion 47. That is, the connection plate 48 extends in a direction (hereinafter referred to as the radial direction) orthogonal to the axial direction with respect to the surface in contact with the power switch 20. The extending portion 49 extends parallel to the axis of the connecting portion 47 from the radially outer edge of the connection plate 48 toward the first switch member 40A. The radially outer surface of the extending portion 49 is formed flat.

[0029] The first switch member 40A and the second switch member 40B are integrated by screwing the screw thread of the small-diameter portion 43 of the first switch member 40A with the screw thread in the hole 47A of the second switch member 40B.

[0030] Next, the configuration on the housing 10 side will be described. FIG. 6 is a cross-sectional view showing the configuration of the switch structure in the power-off state according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view showing the configuration of the switch structure in the power-on state according to the first embodiment of the present invention. As shown in FIGS. 6 and 7, in the housing 10, a housing hole 51 for housing the switch body 40 is formed. The housing hole 51 opens to the outer surface of the housing 10. The housing hole 51 has an outer large-diameter hole portion 52, an inner power switch housing portion 54, and a middle-diameter hole portion 53 connecting the large-diameter hole portion 52 and the power switch housing portion 54. The large-diameter hole portion 52 and the middle-diameter hole portion 53 are cylindrical, and their central axes coincide.

[0031] The inner diameter of the large-diameter hole portion 52 is slightly larger than the outer diameter of the large-diameter portion 41 of the switch body 40. Also, the length of the large-diameter hole portion 52 is longer than the length of the large-diameter portion 41 of the switch body 40.

[0032] The inner diameter of the medium-diameter hole portion 53 is slightly larger than the outer diameters of the connecting portion 47 of the first switch member 40A and the medium-diameter portion 42 of the second switch member 40B of the switch body 40. The length of the medium-diameter hole portion 53 is longer than the length of the medium-diameter portion 42.

[0033] The end of the medium-diameter hole portion 53 of the housing hole 51 opens into the power switch housing portion 54. The power switch housing portion 54 is wider than the medium-diameter hole portion 53, and the first switch member 40A can move axially inside it. Also, a housing groove portion 55 is formed on the side of the medium-diameter hole portion 53 of the housing hole 51. The housing groove portion 55 extends parallel to the medium-diameter hole portion 53.

[0034] The lever portion 30 of the power switch 20 extends in the vertical direction, and the contact portion 31 of the lever portion 30 is located inside the power switch housing portion 54. The center of the lever portion 30 is located between the central axis of the medium-diameter portion 42 and the central axis of the housing groove portion 55. For this reason, the center in the width direction of the lever portion 30 is located between the connecting portion 47 and the extending portion 49 of the first switch member 40A.

[0035] The large-diameter portion 41 and the medium-diameter portion 42 of the second switch member 40B are respectively located inside the large-diameter hole portion 52 and the medium-diameter hole portion 53 of the housing hole 51. Also, the connecting portion 47 of the first switch member 40A is located inside the medium-diameter hole portion 53 of the housing hole 51, the connection plate 48 is located inside the power switch housing portion 54, and the extending portion 49 is located inside the housing groove portion 55. Thereby, the switch body 40 can move axially within the housing hole 51 within a certain range with respect to the housing 10. And the side surface of the extending portion 49 (the surface on the back side of the paper in FIGS. 6 and 7) is in contact with the inner surface of the housing.

[0036] The spring 60 is disposed in the gap between the switch body 40 in the accommodation hole 51 and the inner surface of the accommodation hole 51. The spring 60 is in a contracted state, with one end abutting against the step formed between the large-diameter hole portion 52 and the medium-diameter hole portion 53 of the accommodation hole 51, and the other end abutting against the step formed between the large-diameter portion 41 and the medium-diameter portion 42 of the second switch member 40B. Thereby, the spring 60 biases the second switch member 40B toward the outside of the housing 10.

[0037] When the artificial satellite is accommodated in the rocket, by abutting against the wall surface of the accommodation portion of the rocket, as shown in FIGS. 2 and 6, the switch body 40 is pushed into the accommodation hole 51 so that the outer end surface of the second switch member 40B is flush with the surface of the housing 10. Thereby, the inner side surface of the connection plate 48 of the first switch member 40A presses the lever portion 30, and the lever portion 30 presses the button 22. In this state, the power switch 20 is in the off state.

[0038] On the other hand, when the artificial satellite is released from the rocket, as shown in FIGS. 3 and 7, the switch body 40 moves outward due to the biasing force of the spring 60, and the outer end portion of the second switch member 40B protrudes from the housing 10. When the switch body 40 moves, the state where the connection plate 48 of the first switch member 40A abuts against the lever portion 30 is maintained. Since the width of the connection plate 48 is larger than the inner diameter of the medium-diameter hole portion 53 of the accommodation hole 51, the switch body 40 does not detach from the housing 10.

[0039] When the switch body 40 moves outward, the lever portion 30 deforms outward, and the pressing of the button 22 by the lever portion 30 is released. Thereby, the power switch 20 switches the power state of the artificial satellite. In the present embodiment, after a predetermined time has elapsed since the pressing of the button 22 by the lever portion 30 is released, the power is switched to the on state. In the present embodiment, after a predetermined time has elapsed since the pressing of the button 22 by the lever portion 30 is released, the power is switched to the on state. However, the present invention is not limited to this, and it may be switched to the on state immediately, or the power may be switched from the off state to the on state.

[0040] Next, the assembly method of the switch structure 1 of the present embodiment will be described. FIG. 8 is a perspective view showing a state of assembling the switch structure. When assembling the switch structure 1, first, the first switch member 40A is arranged such that the extending portion 49 is located in the accommodating groove portion 55 and the connecting portion 47 is located in the accommodating hole 51, and the side surface of the connection plate 48 abuts against the inner surface of the housing 10. Next, the second switch member 40B is inserted inside the spring 60. Then, the second switch member 40B is inserted into the accommodating hole 51 from the outside of the housing 10.

[0041] After inserting the second switch member 40B into the accommodating hole 51, a tightening operation is performed by rotating the second switch member 40B using a jig (hexagonal wrench). That is, as shown in FIG. 8, the hexagonal wrench is inserted into the fitting hole 41A of the large-diameter portion 41 of the second switch member 40B, and the second switch member 40B is rotated. At this time, since the surface of the extending portion 49 on the connecting portion 47 side is in contact with the housing 10, the rotation of the first switch member 40A is restricted. Therefore, by rotating only the second switch member 40B without pressing the first switch member 40A with another jig, the tip of the second switch member 40B can be screwed into the hole 47A of the first switch member 40A. Thereby, the first switch member 40A and the second switch member 40B are integrally connected in the longitudinal direction. Then, the power switch 20 is attached. Thereby, the assembly of the switch structure 1 is completed.

[0042] According to the present embodiment, the following effects are achieved. According to this embodiment, since the switch body 40 is composed of only the first switch member 40A and the second switch member 40B, the switch structure 1 has a simple configuration. Further, since the first switch member 40A has a surface that protrudes in a direction orthogonal to the axial direction of the surface in contact with the power switch 20 and contacts the inner surface of the housing 10, without fixing the first switch member 40A, by rotating only the second switch member 40B with a jig, the first switch member 40A and the second switch member 40B can be integrated. Also, when the switch body 40 is rotatable, the spring 60 may rotate during assembly or thereafter, causing spring fixation. However, according to this embodiment, since the rotation of the switch body 40 is restricted, the occurrence of spring fixation can be suppressed. For this reason, when the artificial satellite 100 is released from the rocket, the power supply is surely switched to the on state. Also, since the connection plate 48 extends in a direction orthogonal to the axial direction of the surface in contact with the power switch 20, the connection area with the switch can be increased.

[0043] Also, according to this embodiment, when the switch body 40 moves axially outward toward the outside of the housing by the biasing force of the spring 60, the power supply of the artificial satellite becomes the on state. Thereby, the power supply is in the off state while being housed in the rocket, and when released from the rocket, the switch body 40 moves outward and the power switch becomes the on state.

[0044] Also, according to this embodiment, the surface of the first switch member 40A in contact with the inner surface of the housing 10 further extends axially. Thereby, the contact surface between the housing 10 and the first switch member 40A becomes longer, and when the first switch member 40A and the second switch member 40B are screwed together, the second switch member 40B becomes stable. Also, since the extending portion 49 is housed in the housing groove portion 55, the extending portion 49 functions as a guide when the switch body 40 moves axially. Thereby, even in a case where the switch body 40 presses a position deviated from the center of the lever portion 30 of the power switch 20 as in this embodiment, the lever portion 30 can be pressed axially.

[0045] In addition, since the extending portion 49 is accommodated in the accommodating groove portion 55, the rotation angles of the switch body 40 and the first switch member 40A can be restricted more narrowly.

Explanation of Reference Numerals

[0047] 1: Switch structure 10: Housing 20: Power switch 21: First terminal 22: Second terminal 30: Lever portion 31: Contact portion 40: Switch body 40A: First switch member 40B: Second switch member 41: Large-diameter portion 41A: Fitting hole 42: Medium-diameter portion 43: Small-diameter portion 47: Connecting portion 47A: Hole 48: Connection plate 49: Extending portion 51: Accommodating hole 52: Large-diameter hole portion 53: Medium-diameter hole portion 54: Power switch accommodating portion 55: Accommodating groove portion 60: Spring

Claims

1. A switch structure that is housed inside a housing of a satellite, extends in the longitudinal direction inside the housing, and can switch between an on state and an off state of a power supply by moving axially while one end is in contact with the power supply inside the satellite. The switch structure includes: A switch extending in the longitudinal direction, having a first switch with a surface in contact with the power supply and a surface protruding in a direction orthogonal to the axial direction and in contact with the inner surface of the satellite housing; A second switch integrally connected to the first switch in the longitudinal direction and extending outside the housing relative to the first switch; A spring disposed between a step formed in a part of the second switch in the axial direction and the inner wall of the housing, and by biasing the second switch toward the outside of the housing, the switch moves to switch between the on state and the off state of the power supply; The surface of the first switch in contact with the inner surface of the housing extends in the axial direction; A switch structure for a satellite, characterized in that when the switch moves axially toward the outside of the housing by the biasing force of the spring, the power supply of the satellite is turned on.

2. The first switch includes: A connecting portion connected to the second switch; An extending portion connected to the connecting portion, protruding in a direction orthogonal to the axial direction with respect to the connecting portion, and extending axially toward the outside of the housing, and the side surface of the extending portion is in contact with the inner surface of the housing; The switch structure for a satellite according to claim 1.

3. A switch structure for switching the power supply state of a satellite, including: A slide member that switches the power supply state of the satellite by moving axially toward the outside of the housing; A biasing member provided between the slide member and the housing, and the biasing member biases the slide member outward; The slide member includes: An outer slide portion located on the outside; An inner slide portion connected to the inside of the outer slide portion; The inner slide portion includes a connecting portion connected to the outer slide portion; An engaging portion protruding outward in a direction orthogonal to the axial direction with respect to the connecting portion, and the engaging portion engages with the surface of the housing to restrict rotation of the inner slide portion about the axial direction; The engaging portion includes an extending arm extending in the axial direction along the connecting portion; The side surface of the extending arm engages with the surface of the housing; A switch structure.

4. A receiving groove capable of receiving the extending arm is formed in the housing; The switch structure according to claim 3. ​

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