JP2010201965A - Sandwich panel and artificial satellite - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To actualize wiring inside a sandwich panel without lowering the strength and rigidity of the sandwich panel. <P>SOLUTION: The honeycomb sandwich panel 10 has square pipes 13a-c arranged between two skins 11a, b at previously-designed positions, and honeycomb cores 12a-d arranged between the skins 11a, b in regions excluding the square pipes 13a-c, Before electronic equipment is installed on the skins 11a, b, a hole is machined near the electronic equipment above the square pipes 13a-c so that wire harnesses connected to the electronic equipment can be sufficiently put into and out. After the electronic equipment is installed, the wire harnesses are put into the hole of the honeycomb sandwich panel 10 and passed through the square pipes 13a-c installed inside the honeycomb sandwich panel 10, and then put out of a hole made in the end face of the honeycomb sandwich panel 10 or in another place. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sandwich panel and an artificial satellite. The present invention particularly relates to a honeycomb sandwich panel as a component part of an artificial satellite.

  On the surface of the honeycomb sandwich panel, which is a component of the satellite, electronic devices for operating and functioning the satellite are arranged with a high density, and further, there is a wire harness that bundles the wires of the electronic devices through the gap Wired.

  As described above, in an artificial satellite based on the method of arranging electronic devices and wire harnesses on the honeycomb sandwich panel surface, sufficient work space cannot be secured because the electronic devices and wire harnesses are arranged at high density on the honeycomb sandwich panel surface. In addition, workability of installation work of electronic devices and wire harnesses is poor, and there is a concern about quality deterioration. Furthermore, since the procedure is complicated and numerous, the working speed is reduced in a narrow space, leading to a longer manufacturing period and an increased manufacturing cost.

  In order to solve this problem, there is an example in which the space inside the honeycomb sandwich panel is proposed (see Patent Document 1). The honeycomb sandwich panel is configured by arranging a honeycomb core in the center and sandwiching both surfaces with a skin material. In the example disclosed in Patent Document 1, a part of the honeycomb core of the honeycomb sandwich panel is pulled out and an electronic device and a wire harness are embedded in the space, so that a space on the surface of the honeycomb sandwich panel can be secured, and high density It is said that this will lead to mounting, and further miniaturization, weight reduction, and cost reduction of the satellite.

  However, in the formation of a general honeycomb sandwich panel for an artificial satellite, it is necessary to apply constant pressure and heat to the entire surface of the honeycomb sandwich panel, and when a space for embedding an electronic device and a wire harness inside is cut out in advance before forming, There is a risk that the skin will be damaged by the pressure during molding, or that the periphery of the portion where the honeycomb core is hollowed out may be buckled, and there are practically many limitations when applied to products.

  In addition, it is predicted that additional work and processes, such as reinforcing the sandwich panel skin, will occur when the honeycomb core is hollowed out to reduce the strength and rigidity of the honeycomb sandwich panel, making it difficult to shorten the manufacturing period and reduce manufacturing costs. It is considered to be.

  In addition, satellites often change the arrangement of electronic devices even during manufacturing, but the above configuration requires extensive repairs such as excavating and refilling electronic devices, which increases the manufacturing period and costs. The production risk is considered to be high.

JP 2005-349874 A

  The conventional technology is to embed electronic devices and wire harnesses inside the honeycomb sandwich panel for the purpose of high-density mounting. However, it becomes difficult to manufacture by hollowing out the honeycomb core, and the strength and rigidity of the honeycomb sandwich panel are reduced. The additional work such as lowering and the necessity of reinforcement by this occurs. Furthermore, there was a problem of having a high risk for changing the arrangement of electronic devices.

  An object of the present invention is to realize wiring inside a sandwich panel without reducing the strength and rigidity of the sandwich panel, for example.

The sandwich panel according to one aspect of the present invention is:
A pair of skin members facing each other;
A hollow member having at least one opening, forming a passage into which the predetermined member is inserted from the opening on the inside, and having the outside sandwiched between predetermined regions of the opposing surfaces of the pair of skin members;
A core member sandwiched between regions other than the predetermined region on each of the opposing surfaces of the pair of skin members.

  According to one aspect of the present invention, the hollow member of the sandwich panel forms a passage into which the predetermined member is inserted from the opening, and the outer side is sandwiched between predetermined regions of the opposing surfaces of the skin member of the sandwich panel. In addition, the sandwich panel core member is sandwiched between regions other than the predetermined regions of the opposing surfaces of the skin member, thereby realizing wiring inside the sandwich panel without reducing the strength and rigidity of the sandwich panel. be able to.

3 is a diagram illustrating a configuration example of a sandwich panel according to Embodiment 1. FIG. 4 is a diagram illustrating an example of mounting an electronic device on a sandwich panel according to Embodiment 1. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration example (disassembled state) of a honeycomb sandwich panel 10 (an example of a sandwich panel) according to the present embodiment.

  The honeycomb sandwich panel 10 includes a pair of skins 11a and 11b (an example of a skin member), four honeycomb cores 12a to 12d (an example of a core member), and three square pipes 13a to 13c (an example of a hollow member). Yes. The skin 11a and the skin 11b are disposed so as to face each other. The skins 11a and 11b are formed of aluminum or CFRP (Carbon, Fiber, Reinforced, Plastics) and have the same shape. The honeycomb cores 12a to 12d are made of aluminum. The square pipes 13a to 13c are formed of the same material as the skins 11a and 11b. The square pipes 13a to 13c are processed to substantially the same height as the honeycomb cores 12a to 12d. That is, the square pipes 13a to 13c have substantially the same length as the honeycomb cores 12a to 12d in the direction perpendicular to the opposing surfaces of the pair of skins 11a and 11b.

  FIG. 2 is a diagram illustrating an example of mounting the electronic devices 14a to 14e on the honeycomb sandwich panel 10 illustrated in FIG.

  The electronic devices 14 a to 14 e are arranged at positions designed in advance on the surface of the honeycomb sandwich panel 10. That is, the electronic devices 14a to 14e are disposed at predetermined positions on the surface opposite to the surface where the pair of skins 11a and 11b face each other. In FIG. 2, the electronic devices 14 a to 14 e are disposed only on the skin 11 b side, but can also be disposed on the skin 11 a side. The wire harness 15 (an example of an electric wire) is a bundle of wires connected to the electronic devices 14a to 14e.

  Hereinafter, the detailed configuration of the honeycomb sandwich panel 10 on which the electronic devices 14a to 14e are mounted will be described with reference to FIGS.

  The square pipes 13a to 13c are sandwiched between predetermined regions on the opposing surfaces of the skins 11a and 11b. On the other hand, the honeycomb cores 12a to 12d are sandwiched between regions other than the predetermined region on the opposing surfaces of the skins 11a and 11b. That is, in the honeycomb sandwich panel 10, the square pipes 13 a to 13 c are arranged at a predesigned position between the two skins 11 a and b, except for the square pipes 13 a to 13 c between the two skins 11 a and b. In this region, honeycomb cores 12a to 12d are arranged.

  Each of the square pipes 13a to 13c has at least one opening, and forms a passage through which the wire harness 15 is inserted from the opening. For example, as shown in FIG. 1, one opening is provided at each end of the square pipe 13a. Similarly, one opening is provided at each end of each of the square pipes 13b and 13c. Further, as shown in FIG. 2, another opening is provided near the center of one side surface of the square pipe 13a. Similarly, another opening is provided near the center of one side surface of the square pipe 13c. The opening provided in the vicinity of the center of one side surface of the square pipe 13a and the opening provided at one end of the square pipe 13c are shared by the square pipes 13a and 13c. A passage formed inside each of the pipes 13a and 13c is communicated. Similarly, the opening provided at one end of the square pipe 13b and the opening provided near the center of one side surface of the square pipe 13c are shared by the square pipes 13b and 13c, and the two openings are provided via the two openings. The passages formed inside the square pipes 13b and 13c communicate with each other. That is, there is a hole in the contact portion between the square pipes 13a, c or between the square pipes 13b, c, and inside the honeycomb sandwich panel 10, the square pipes 13a, c or the square pipes 13b, c that are in contact with each other. The spaces are connected.

  Further, as shown in FIG. 2, in addition to the above opening, two holes 16a and 16b are provided as openings on the surface of the square pipe 13a facing the skin 11b. Similarly, one hole 16c is provided as an opening on the surface of the square pipe 13b facing the skin 11b. Similarly, two holes 16d and 16e are provided as openings on the surface of the square pipe 13c that faces the skin 11b. Thus, before installing the electronic devices 14a to 14e on the skin 11b of the honeycomb sandwich panel 10, the electronic devices 14a to 14e are placed on the square pipes 13a to 13c and in the vicinity of the electronic devices 14a to 14e. Holes 16a to 16e through which the connected wire harness 15 can be taken in and out are processed. In addition, the skin 11b is provided with a through hole into which the wire harness 15 is inserted, and the square pipes 13a to 13c have holes 16a to 16e at positions corresponding to the through holes.

  After the electronic devices 14a to 14e are installed, the wire harness 15 is put into the holes 16a to 16e formed in the honeycomb sandwich panel 10 and passed through the square pipes 13a to 13c installed inside the honeycomb sandwich panel 10, Furthermore, it is taken out from the end face of the honeycomb sandwich panel 10 or from holes 16a to 16e formed at other places. Thereby, wiring inside the honeycomb sandwich panel 10 is performed. By constituting a part of the artificial satellite with the honeycomb sandwich panel 10 as described above, the following effects can be obtained according to the present embodiment.

  First, the wiring of the wire harness 15 inside the honeycomb sandwich panel 10 can be realized at a realistic level applicable to the product, and the space for wiring harness wiring conventionally required on the panel skin is not required. It is possible to reduce the construction period, reduce costs, or reduce the size, weight, and cost of artificial satellites by increasing the mounting density.

  In forming the honeycomb sandwich panel 10, it is necessary to apply a certain pressure to the entire surface of the honeycomb sandwich panel 10. However, since the square pipes 13 a to 13 c are arranged at the wiring locations of the wire harness 15, the forming is performed. It can be molded by a general molding method without being damaged by the pressure of time. Furthermore, since the strength and rigidity of the honeycomb sandwich panel 10 are improved by arranging the square pipes 13a to 13c inside the honeycomb sandwich panel 10, it is not necessary to reinforce by adding any members.

  Further, even when the arrangement of the electronic devices 14a to 14e is changed, it can be dealt with by simply re-opening the holes (similar to the holes 16a to 16e) through which the wire harness 15 is passed in the vicinity of the electronic devices 14a to 14e. The risk for changing the arrangement of 14a to 14e is small. In addition, since the position of the hole to be additionally processed does not need to be determined with high accuracy, it is not necessary to perform machining, and the hole may be provided by manual processing. It is possible to change the arrangement after assembling the honeycomb sandwich panel 10 as a component as long as the working space can be secured.

  In the present embodiment, a member other than the wire harness 15 can be inserted into the openings of the square pipes 13a to 13c. The present embodiment can also be applied to sandwich panels other than the honeycomb sandwich panel 10. The present embodiment can also be applied to sandwich panels used for purposes other than the components of artificial satellites.

  As described above, in the honeycomb sandwich panel 10 according to the present embodiment, the square pipes 13a to 13c are arranged between the two skins 11a and 11b at a predesigned position, and the two skins 11a and 11a, Honeycomb cores 12a to 12d are arranged in regions other than the square pipes 13a to 13c between b.

  In the honeycomb sandwich panel 10, the material of the skins 11a and 11b is aluminum or CFRP, the honeycomb cores 12a to 12d are made of aluminum, and the square pipes 13a to 13c are made of the material of the skins 11a and 11b. The same and the same height as the honeycomb core are finished.

  Further, in the honeycomb sandwich panel 10, the portions where the square pipes 13 a to 13 c embedded in the honeycomb sandwich panel 10 are in contact with each other have holes formed in the side surfaces of the square pipes 13 a to 13 c, and The space between 13a-c is characterized by being continuous.

  Further, the honeycomb sandwich panel 10 is characterized in that holes 16a to 16e having a size allowing the wire harness 15 to be taken in and out are opened on the square pipes 13a to 13c inside the honeycomb sandwich panel 10.

  Further, the honeycomb sandwich panel 10 is a square pipe in which electronic devices 14a to 14e are installed on the surface of the honeycomb sandwich panel 10 and a wire harness 15 connected to the electronic devices 14a to 14e is embedded in the honeycomb sandwich panel 10. It is wired within 13a-c.

  Due to the features as described above, in the present embodiment, it is possible to manufacture at a level applicable to a product, and conventionally, wiring is performed on the panel surface without reducing the strength and rigidity of the honeycomb sandwich panel 10. It is possible to wire the wire harness 15 inside the honeycomb sandwich panel 10, further reduce the risk of changing the arrangement of the electronic devices 14a to 14e, and improve the workability of the installation work of the electronic devices 14a to 14e and the wire harness 15. The construction period can be shortened and the cost can be reduced.

  10 honeycomb sandwich panel, 11a, b skin, 12a-d honeycomb core, 13a-c square pipe, 14a-e electronic device, 15 wire harness, 16a-e hole.

Claims (7)

A pair of skin members facing each other;
A hollow member having at least one opening, forming a passage into which the predetermined member is inserted from the opening on the inside, and having the outside sandwiched between predetermined regions of the opposing surfaces of the pair of skin members;
A sandwich panel comprising: a core member sandwiched between regions other than the predetermined region on each of the opposing surfaces of the pair of skin members.   2. The sandwich panel according to claim 1, wherein the hollow member has substantially the same length as the core member in a direction perpendicular to the opposing surfaces of the pair of skin members. The sandwich panel comprises two or more hollow members,
The sandwich panel according to claim 1 or 2, wherein the at least two hollow members share at least one opening, and a passage formed inside thereof is communicated with each other through the opening. . The predetermined member is an electric wire,
The sandwich panel further comprises:
The sandwich panel according to any one of claims 1 to 3, further comprising an electronic device to which the electric wire is connected. The electronic device is disposed at a predetermined position on a surface opposite to the surface facing the pair of skin members,
The skin member on which the electronic device is disposed is provided with a through hole into which the electric wire is inserted,
The sandwich panel according to claim 4, wherein the hollow member has at least one opening at a position corresponding to the through hole. The hollow member is a square pipe made of aluminum or CFRP (Carbon, Fiber, Reinforced, Plastics),
The sandwich panel according to any one of claims 1 to 5, wherein the core member is an aluminum honeycomb core. A pair of skin members facing each other;
A hollow member having at least one opening, forming a passage into which the predetermined member is inserted from the opening on the inside, and having the outside sandwiched between predetermined regions of the opposing surfaces of the pair of skin members;
An artificial satellite comprising a sandwich panel including a core member sandwiched between regions other than the predetermined region on each of opposing surfaces of the pair of skin members.

Images