JPH0431920Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a housing structure for equipment mounted on a satellite, and particularly to a housing structure for equipment mounted on a satellite that can be produced at low cost and in a short period of time.

(Prior art) Conventionally, satellite onboard equipment has components or microwave ICs built into small housings that are organized into electrical functional units, and electrical adjustments and tests are performed on each housing unit.
For example, units such as the receiving section, transmitting section, or switching section for switching between active and standby, can be housed in a large housing to prevent interference with each other due to electrical leakage or differences in signal levels between the receiving section and transmitting section. It had the structure of a costume.

However, due to the demand for improving the economic efficiency of satellites themselves, for example, in order to enable large-capacity communications, it is necessary for satellite equipment to become smaller and lighter, and to carry a large number of them onboard a satellite. It has become necessary to achieve smaller and lighter packaging by eliminating the small housings that were grouped together and mounting them directly into larger housings, and by abandoning the so-called method of mounting a housing inside a housing.

The microwave that was previously housed in the housing
When mounting an IC, oscillator circuit amplifier module, etc. exposed in an integrated housing,
In order to eliminate the influence of electrical level differences between each other, a partition to prevent interference is required in the integrated housing.Also, since satellites are subject to severe vibrations and shocks at the time of launch, the strength and rigidity are sufficiently high. It is necessary to do so. In particular, when mounting a microwave IC, the flatness of the mounting surface must be made good, and in the case of satellite-mounted equipment, heat transfer is only through radiation and conduction, so the contact thermal resistance of the mounting part must be kept small. Therefore, it is necessary to further improve the flatness.

In order to meet these demands, conventional housings have been constructed to be compact and lightweight, by machining a thick block of aluminum alloy to create a chamber for installing microwave ICs and amplifier module oscillation circuits. However, this method requires complicated machining such as making the wall thickness of the housing as thin as possible in order to reduce the weight and cutting unnecessary parts, which takes a long machining time.
Therefore, it had become very expensive. or,
If you want to make changes at the electrical adjustment stage, the degree of freedom in making changes is limited, making it difficult to achieve an optimal design, and in some cases, it may even be necessary to recreate the housing itself. This was a major obstacle in ensuring product delivery on time.

(Purpose of the invention) The present invention was made in order to solve the problems mentioned above. Manufacturing is simplified by inset joining of sheet metal processing, and it is inexpensive.
Moreover, it is an object of the present invention to provide a housing structure for equipment mounted on a satellite that can be manufactured in a short period of time.

(Structure of the invention) For this purpose, the housing structure according to the invention provides the necessary symmetrical grooves in the upper surface part of the plate constituting the bottom surface and the lower surface part constituting the upper surface, and inserts a strip-shaped plate into the groove part. A box shape is formed by fitting the bottom surface and the top surface together, and further providing a groove in the cover with the same trajectory as the groove provided on the bottom surface of the top surface, and inserting a packing for electrical shielding into the groove, This increases the shielding effect.

(Preferred Embodiment of the Invention) Hereinafter, the present invention will be described with reference to the drawings.

The structure of the conventional satellite equipment housing was changed to 5th.
6 and 7, and the housing structure according to an embodiment of the present invention is shown in FIGS. 1 to 4. FIG. 5 is a plan view of a conventional housing structure, FIG. 6 is a side view, and FIG. 7 is a partial side view taken along line A-A' in FIG. To explain the conventional example with reference to these figures, numeral 1 is a flange for attaching the top cover, and numeral 2 is a flange for attaching the housing to the platform of the satellite. 3 is a partition portion for preventing interference between the respective electric circuits. To create something with this kind of structure,
In order to reduce weight and improve surface precision, the outside and inside are machined from a thick block of aluminum alloy. However, for housings that require weight reduction, the wall thickness must be made thinner, and the inside must be filled with material during machining, which is a factor that increases machining time. was. Also, A- in Figure 5
The part corresponding to part A' must be processed to electrically connect the two rooms, and as shown in Figure 7, the partition hole 4 and notch 5 are processed. Since electrical discharge machining is used in the manufacturing process, the machining process is complicated, and the manufacturing period for the housing is extremely long.

FIG. 1 is a top view of the housing structure of a satellite-mounted device that is an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view taken along line F-F' in FIG. FIG. 4 is a partial side view taken along line B-B' in FIG. 1. In these figures, a side wall plate 14 and a partition plate 21 are attached to the top plate 11 and the bottom plate 12, respectively.
Grooves 15 and 16 are provided for fitting into the grooves 15, and the side plate 14 and the partition plate 21 are fitted into the grooves 15. The cover 13 normally does not have a groove 17, but when electrical shielding is required as in this embodiment, the groove 17 is drilled in the same trajectory as the groove 15 and widened as necessary. A fitting electrical shielding gasket 18 is inserted into the groove 17 to provide an electrical shielding effect to the housing. Grooves 15 and 16 are plane-symmetrical groove loci,
Although the groove widths of the groove portions 15 and the grooves 17 differ depending on the case, their loci are the same. Therefore, when machining such grooves with a numerically controlled milling machine, etc., you can create a single NC machining program and machine symmetrical grooves using a mirror image, and the grooves on the cover can be made very easily by changing only the end mill. This allows the work to be carried out efficiently and has a great effect on reducing machining time.

If the partition plate 21 in the section B-B' of FIG.
1 is processed into individual pieces before being joined to the top plate 11 and the bottom plate 12, making it possible to perform hole drilling and cutting work very easily. Here, a top plate 11, a bottom plate 12, a side wall plate 14 and a partition plate 21
Regarding the joining of housings for satellite equipment, it is necessary to reduce the weight, and aluminum alloy is often used as the material.
The joining may be performed by deep brazing.
In addition, in areas where particularly good flatness is required, the plate thickness can be increased in advance, and once the above-mentioned deep brazing and other joints are completed, machining is performed to improve the flatness. No problem.

(Effects of the invention) As explained in the above embodiments, the satellite onboard equipment housing structure according to the invention does not require much time to manufacture as in the past, and also allows for a structure with less flexibility for design changes. By creating a housing structure with a simple shape using so-called sheet metal processing and combination bonding, it is possible to greatly reduce the manufacturing period and provide an inexpensive housing structure.

[Brief explanation of the drawing]

FIG. 1 is a top view of the housing structure of a satellite-mounted device that is an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view taken along line F-F' in FIG. Figure 4 is a partial side view taken along line B-B' in Figure 1;
FIG. 5 is a plan view of a conventional housing structure, FIG. 6 is a side view, and FIG. 7 is a partial side view taken along line A-A' in FIG. 11... Top plate, 12... Bottom plate, 13... Cover, 14... Side wall plate, 15, 16... Groove, 1
7...Groove, 18...Shield packing, 19...
Hole, 20...notch, 21...partition plate.

Claims (1)

[Scope of utility model registration request] A necessary symmetrical groove is provided in the upper surface part of the plate constituting the bottom surface and the lower surface part constituting the top surface, and a strip-shaped plate is fitted along the groove part to join the bottom surface and the top surface to form a box shape, and then the upper surface A satellite-mounted device characterized in that the cover is provided with a groove having the same trajectory as the groove provided on the lower surface, and a gasket for electrical shielding is inserted into the groove, thereby enhancing the shielding effect. Housing structure.