JPH09152088A - Thermal blanket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal blanket in which little heat quantity is exchanged through conduction. SOLUTION: A thermal blanket 2 comprises plural shields and separators stacked alternately, with their peripheries sewed up with yarn. A thermal blanket 1 surrounds the thermal blanket 2, and a Velcro tape 3 for attaching to a mounting surface 4 is sewed by thread to the periphery of the thermal blanket 1. The thermal blanket, in which the area where the shields press against one another is considerably small because the Velcro tape is not sewed to the thermal blanket 2 having heat insulating performance, so that little heat quantity is exchanged through conduction, can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal blanket for use in artificial satellites and onboard equipment thereof, and more particularly to a thermal blanket which can be mounted on a mounting surface while suppressing heat exchange due to conduction between the front and back of the thermal blanket. .

[0002]

2. Description of the Related Art A conventional thermal blanket 2 is shown in FIG.
As shown in, the shields 6 and the separators 7 are alternately laminated and sewn with the thermal blanket sewing thread 5. Further, a Velcro tape 3 for mounting the thermal blanket 2 is strongly sewn to the thermal blanket 2 with a thermal blanket sewing thread 8. Further, the thermal blanket 2 is attached to the mounting surface 4 by the Velcro tape 3.

As another conventional thermal blanket, Japanese Utility Model Laid-Open No. 4-14000 discloses a plurality of shields each made of a metal-deposited film, and the shields are stacked on top of each other and are inserted between the shields. , A thermal blanket comprising a separator preventing contact between the shields and a plastic rivet fixing the separator and the shield to each other.

Further, in Japanese Unexamined Patent Publication No. 4-203692, the films are arranged in layers, and a heat insulating cylindrical spacer is interposed between the films so that the films of the respective layers do not contact each other. A multi-layer insulation material is described in which the end faces of the gap formed by the film are covered with a cover.

[0005]

In the above-mentioned conventional thermal blanket, since the thermal blanket is mounted on the mounting surface with the velcro tape interposed, the cylinders to which the velcro tape is sewn are closely attached to each other between the shields. There is a drawback that the amount of heat exchange due to conduction increases.

Therefore, the present invention aims to improve the drawbacks of the conventional thermal blanket and to provide a thermal blanket having a small amount of heat exchange by conduction.

[0007]

The present invention employs the following means to solve the above-mentioned problems.

(1) A first thermal blanket, which is formed by stacking a plurality of shields and separators on top of each other, is surrounded by a second thermal blanket, and the second thermal blanket is attached to a mounting surface. Thermal blanket for sewing Velcro tape.

(2) The thermal blanket according to the above (1), wherein the layer structure of the first thermal blanket is maintained in whole or in part by stitching with thread.

(3) The thermal blanket according to the above (1), wherein the layer structure of the first thermal blanket is entirely or partially maintained by taping.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing the structure of a thermal blanket according to an embodiment of the present invention.

In FIG. 1, 1 and 2 are thermal blankets. As shown in FIG. 2, the thermal blanket 2 is configured by alternately stacking a plurality of shields 6 and separators 1 one by one, and has a strength such that the shields 6 and the separators 7 do not come apart from each other. It is sewn with a blanket sewing thread 5.

The thermal blanket 1 is for mounting the thermal blanket 2 on the mounting surface 4,
Velcro tape 3 is strongly sewn with Velcro tape sewing thread 8 similar to that shown in FIG.

As shown in FIG. 1, the thermal blanket 2 exists so as to be wrapped in the thermal blanket 1, and is attached to the mounting surface 4 by the Velcro tape 3 attached to the thermal blanket 1. At this time, since the velcro tape 3 for mounting is not sewn to the thermal blanket 2, unlike the conventional thermal blanket shown in FIG. 4, the adhesion between the shields with respect to the sewn portion of the velcro tape 3 is small. Therefore, the amount of heat exchange by conduction is small.

In recent years, the number of cases where miniaturized on-board equipment is mounted outside a spacecraft and exposed to outer space is increasing. Naturally, the thermal blanket mounted on this onboard device will be smaller. When the velcro tape is sewn to the thermal blanket, if the thermal blanket is small, the proportion of the area sewn with the velcro tape increases, and the effect of heat exchange due to conduction also increases. Therefore, the present invention is particularly effective for mounting a thermal blanket on a small-sized on-board device.

Further, when the mounting method of the present invention is utilized, as shown in FIG. 3, only the essential points of the thermal blanket 2 are sewn, or the four sides or only the essential points are surrounded by the heat insulating tape 9. By adopting a structure in which they are attached, the heat insulation performance is further improved.

[0018]

As is apparent from the above description, according to the present invention, since the velcro tape is not sewn on the thermal blanket having a heat insulating property, the area where the shields are closely attached is significantly small. Therefore, it is possible to provide a thermal blanket with a small amount of heat exchange by conduction.

In addition, recently, the number of cases where miniaturized onboard equipment of an artificial satellite is exposed to outer space is increasing,
The present invention has an outstanding effect as a thermal blanket for coping with such cases.

[Brief description of the drawings]

1A and 1B show an entire embodiment of the present invention, in which FIG. 1A is a sectional view and FIG. 1B is a plan view in the direction of arrow A in FIG.

FIG. 2 shows a thermal blanket according to an embodiment of the present invention, (a) is a plan view, and (b) is a layer configuration diagram.

FIG. 3 shows two improved thermal blankets in one embodiment of the present invention,
(A) is a plan view of only the essential parts sewn with a thermal blanket sewing thread, (b) is a plan view of the end face fixed with tape, (c) is a side view of (b), and (d) is (c). ) Is an enlarged view of a portion within a circle.

FIG. 4 shows a conventional thermal blanket, (a) is a cross-sectional view, (b) is a plan view in the direction of arrow A in (a),
(C) is a layer configuration diagram.

[Explanation of symbols]

 1 Thermal blanket 2 Thermal blanket 3 Velcro tape 4 Mounting surface 5 Thermal blanket sewing thread 6 Shield 7 Separator 8 Velcro tape sewing thread

Claims (3)

[Claims] 1. A first thermal blanket formed by stacking a plurality of shields and a separator,
A thermal blanket that is surrounded by a second thermal blanket, and velcro tape for attaching to a mounting surface is sewn to the second thermal blanket. 2. The layer construction of the first thermal blanket is maintained by thread sewing.
The listed thermal blanket. 3. The thermal blanket according to claim 1, wherein the layer structure of the first thermal blanket is maintained by taping the periphery thereof.