JPS6232699A - Electronic equipment box body structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Table of Contents] - Overview, industrial application field, conventional technology (Fig. 4) - Problems to be solved by the invention, means for solving the problems, actions, and implementation Example (Fig. 1.2.3) - Effect of the invention [Summary] A heat shielding member (32A
.

32B, 32C) are interposed between each insulation wall (22 to 27
), it is possible to improve the heat retention inside the casing (20).

[Industrial application field]

The present invention relates to an electronic device casing structure for accommodating an electronic device such as a repeater, and in particular to a heat insulating wall in a casing formed by combining heat insulating walls with high barrier properties in order to obtain a heat retention effect inside the casing. The present invention relates to an end face treatment structure.

As this type of casing, a case is often used in which a heat insulating wall formed by stacking and fixing metal plates on both sides of a heat insulating material such as a foamed resin is combined to form a closed box shape. In order to guarantee the operation of the electronic equipment housed in this type of housing, especially when installed outdoors, it prevents the heat inside the housing from escaping to the outside in the winter. Good heat insulation properties are required. For example, when the electronic device is an optical repeater, in order to maintain its high reliability, it is necessary to maintain the temperature inside the casing at 0° C. or higher even when the outside air is very low (for example, -30° C.).

[Conventional technology]

FIG. 4 is a diagram for explaining a conventional example, and is a plan sectional view of a main part of an electronic device housing.

In the same figure, numerals 11 and 12 are the left side wall and rear wall that constitute the electronic device housing, 13 and 14 are L-shaped fittings for coupling,
15 and 16 indicate rivets, respectively. This conventional example includes the left side wall, the rear walls 15 and 16, the other front side, the right side wall,
The upper and lower walls (not shown) are joined together to form a closed box shape, and the front wall of the box is formed as a door (not shown). Note that TN indicates the inside of the casing, and OUT indicates the outside of the casing.

The left side wall and the rear wall 11, 12 have metal plates 11b, 12b (inside) and 11c, 12c (outside) on both sides of insulation materials 11a, 12a such as foamed resin (for example, foamed urethane).
They are each attached to form a heat insulating wall. As shown in the figure, the end faces of the heat insulating walls 11 and 12 are left cut, and the end face of the heat insulating wall 11 is brought into contact with and adhered to the metal plate 12b inside the end of the heat insulating wall 12. An L carving tool 13 is placed on the outer surface of the corner formed by both of these, and an L carving tool 14 is placed on the inner surface of the corner. A rivet 15 is attached through the heat insulating wall 11 and the L-shaped metal fittings 13 and 14, and a rivet 16 is attached through the heat-insulating wall 12 and the L-shaped metal fittings 13 and 14. Thereby, the heat insulating walls 11 and 12 are joined together. This conventional example is constructed by connecting each heat insulating wall in the same manner as described above.

[Problem that the invention seeks to solve]

In the above conventional technology, the inner metal plate 11b of the heat insulating wall 11 is connected to the outer metal plate through the inner metal plate 12b of the heat insulating wall 12 and the L-carved metal fitting 13, and through the rivet 15 which is attached through the wall. 11c. On the other hand, the inner metal plate 12b of the heat insulating wall 12 is thermally connected to the outer metal plate 12c via the L-shaped metal fitting 13 and via the rivet 16 which is attached through the wall. Therefore, in winter, the outside air temperature is lower than the internal temperature of the housing, so the heat inside the housing is transferred from the inner metal plates 11b and 12b to the outer metal plate 11c,
12c and flows out of the housing, the temperature inside the housing decreases. As described above, this conventional example has a problem in that the temperature inside the casing fluctuates greatly with respect to the outside temperature, and it lacks heat retention.

The present invention was created in view of these problems, and an object of the present invention is to provide an electronic device casing structure that can improve heat retention by improving end face treatment of a heat insulating wall.

[Means for solving problems]

In order to solve the above-mentioned problems, in the present invention, an electronic device casing is constructed by combining heat insulating walls formed by fixing metal plates on both sides of a heat insulating material such as a foamed resin. Inner/outer metal plates 22b, 26b, 27b at the end faces of each heat insulating wall 22-27
・22c.

Provided is an electronic device housing structure characterized in that heat shielding members 32A, 32B, and 32C having high thermal resistance are interposed between 26c and 27c, and the end faces of each of the above-mentioned heat insulating walls are treated.

[For production]

The inner and outer metal plates are thermally isolated from each other by interposing a heat shielding member between the inner and outer metal plates at the end faces of the respective heat insulating walls (22 to 27) constituting the casing (20). This allows heat transfer between the inside and outside of the housing (20) to be minimized.

〔Example〕

1 to 3 are diagrams for explaining the present invention in detail. FIG. 1 is a plan sectional view of the main parts of the first embodiment of the present invention, showing the end structure (a) of the front wall (door) and left side wall of the casing (20), and the end structure fol of the left side wall and rear wall. FIG. 2 is a plan sectional view of a main part of the second embodiment, and FIG. 3 is an external perspective view of an electronic device casing according to the present invention. In addition, when looking at FIG. 3, the left hand side will be called the front side of the casing and each part, the right hand side will be called the rear side, and when moving from the front side to the rear side, the left hand side will be called the left side, and the right hand side will be called the right side.

First, the structure of this electronic device casing will be briefly explained with reference to FIG. In FIG. 3, reference numeral 20 indicates an electronic device housing. This housing 20 has left and right side walls 22 and 23,
The upper and lower walls 24 and 25 and the front and rear walls 26 and 27 form a hermetically insulated casing.

The front wall 26 is in this case formed as a door and is connected to the housing 20.
It is attached to the front of the camera so that it can be opened and closed. Left/right side wall 2
2, 23, upper and lower walls 24 and 25, and front and rear walls 2
6 and 27 are both formed as heat insulating walls by fixing metal plates on both sides of a heat insulating material such as foamed resin (for example, foamed urethane), and these are bonded together to form the casing 20. be done. A lock knob 28 (not shown) is installed through the front wall (door) 26, and this knob 2
A lock pawl 528a is fixedly provided at the tip of 8. A sunshade is provided by a plate 29a, which is provided through a gap on each outer surface of the housing 20, that is, on the left and right side walls (22, 23), on the top wall (24), and on the front and rear walls (26, 27). 29b, 29c, 2
9d and 29e are fixedly installed, respectively.

Incidentally, the reference numeral 30 indicates an electronic device housed inside the housing 20;
Reference numeral 31 indicates a pair of eye bolts for lifting fixedly installed on the upper surface of the casing 20.

Now, referring to FIG. 1, the embodiment shown in FIG. 1 will be explained. First, FIG. 1(a) will be explained. As mentioned above, FIG. 1 (A) is a plan sectional view showing the end structure of the front wall (door) and left side wall of the housing 20 (FIG. 3). In this case, the front wall (door) is closed. 22 is the left side wall, 26 is the front wall, 28 is the lock knob rotatably attached to the front wall 26, 28a is the lock claw, IN is the inside of the casing, and OUT is the inside of the housing. The outside is shown respectively.

The left side wall 22 is formed as a heat insulating wall by a heat insulating material 22a such as foamed resin (for example, urethane foam) and inner and outer metal plates 22b and 22c fixed to both the inner and outer surfaces of the heat insulating material 22a. The left side wall 22 is provided with a stepped portion 22d on its end surface. End face members 22e and 22f formed to match the cross-sectional shape of the stepped portion 22d are overlapped on the stepped portion 22d, and are placed on the end face of the left side wall 22 and on the inner and outer metal plates 22b.
, 22C, and between the end members 22e and 22f, a heat shielding member 32A made of a material having high thermal resistance (for example, a rubber sheet, a resin plate, etc.) is interposed and fixed. The end members 22e and 22f are individually fixed onto the outer and inner metal members 22C and 22b by rivets 33, respectively. A gasket 34 (for example, made of rubber or the like) having high heat resistance and elasticity is arranged and fixed on the end face member 22f at the stepped portion 22d. In addition, a notch groove 22 is formed inside near the end surface of the left side wall 22.
A lock pawl 28a engages with this notch groove 22g to fix the front wall 26 to the left side wall 22. In this way, the left side wall 22 has its end surface treated by interposing the heat shielding member 32A between the inner and outer metal plates 22b and 22c, and the inner and outer metal plates 22b
, 22c are thermally insulated by the heat insulating member 32A.

The front wall 26, like the left side wall 22 described above, is formed as a heat insulating wall from a heat insulating material 26a and inner and outer metal plates 26b and 26c. On the end face of the front wall 26 and the inner and outer plates 2
A heat shielding member 32B having an inverted U-shaped cross section is disposed over 5b and 26c, and its inner and outer ends are fitted with rivets 33.
are individually fixed to the inner and outer plates 26b and 26G, respectively. Adjacent to the inner end of the heat shielding member 32B, a packing contacting member 35 having an inverted cross section is fixed by a rivet 33. This packing contact member 35 is made of a material with low thermal conductivity (eg, resin, etc.). Also,
The knob 28 and the lock pawl 28a are also made of a material with low thermal conductivity. In this way, the front wall 26 has its end surface treated by interposing the heat shielding member 32B between the inner and outer metal plates 22b and 22c, and the inner and outer metal plates 26b and 26c are treated with the heat shielding member 32B. 32B. Incidentally, the other end face (right side and upper and lower sides) of the front wall 26, that is, the entire circumferential end face of the front wall 26 is also subjected to end face treatment in the same manner as described above.

In this way, the end surfaces of the left side wall 22 and the front wall 26 that are formed are connected to each other by the packing abutting member 35 coming into contact with the packing 34, whereby the housing (2
0) The inside is thermally isolated from the outside.

Next, FIG. 1(o) will be explained. As mentioned above, FIG. 1(B) is a plan sectional view showing the end structure of the left side wall and the rear wall of the housing 20 (FIG. 3), where 22 and 27 denote the left side wall and the rear wall, respectively.

As mentioned above, the left side wall 22 and the rear wall 27 are made of heat insulating materials 22a, 27a, inner and outer metal plates 22b, 22c,
27b.

27c and are respectively formed as a heat insulating wall. A heat shielding member 32C having an inverted U-shaped cross section is arranged and fixed over the end surface of the rear wall 27 and over the inner and outer metal plates 27b and 27C. The left side wall 22 is placed on the inner side of this heat shielding member 32C.
The end faces of are abutted and fixed. An L carving tool 36 is arranged on the outer surface of the corner formed by the left side wall 22 and the rear wall 27, and an L carving tool 37 is arranged on the inner surface of the corner. Both ends of the L carving tool 36 are fixed onto the outer metal plates 22c and 27c by rivets 33, respectively. Both ends of the L carved metal fitting 37 have rivets 3 on the inner metal plates 22b and 27b.
3, respectively. In this way, the left side wall 22 and the rear wall 27 are end-face treated by interposing the heat shielding member 32C between the inner and outer metal plates on each end face, and the inner metal plate 22b.

27b and the outer metal plates 22c and 27c are heat shielding members 32C.
are thermally isolated by In addition, the other right side wall 23 and upper and lower walls 24 that constitute the housing 20 (FIG. 3)
, 25 are also treated in the same manner as described above.

Next, a second embodiment will be described with reference to FIG. In the same figure, the reference numeral 22 is similar to the above-mentioned figure 1 (o).
Reference numeral 27 indicates the left side wall and rear wall of the housing 20 (FIG. 3). As shown in the figure, the rear wall 27 is provided with a stepped portion 27d on its end surface. This stepped portion 27d is formed by removing a part of the end face of the inner metal plate 27b and by removing a part of the end face of the heat insulating material 27a. The end surface of the left side wall 22 is abutted and fixed onto the stepped portion 27d. An L carving tool 38 is arranged on the outer surface of the corner formed by the left side wall 22 and the rear wall 27, and an L carving tool 39 is arranged on the inner surface of the corner. Both ends of the L carved metal fitting 38 are connected to the outer metal plates 22c, 2.
7c by rivets 33, respectively. L
Both ends of the carving tool 39 are inner metal Fi 22b, 27b.
They are each fixed to the top by rivets 33. As described above, in the case of this example, the left side wall 22 and the rear wall 27 are end-face treated by abutting and connecting the heat insulating members 22a, 27a at their end faces, and these heat insulating members 22a, 27a are heated. It will play the role of a blocking member,
Inner metal plates 22b, 27b and outer metal plates 22c, 27c
are thermally isolated from each other.

Note that the present invention is not limited to the above embodiments (
Of course, the present invention can be applied to various modifications that follow the gist of the present invention, and it is of course possible to provide a heat pipe as necessary.

〔Effect of the invention〕

As explained above, according to the present invention, a heat shielding member is interposed between the inner and outer metal plates at the end faces of each of the heat insulating walls (22 to 27) constituting the casing (20), and the end faces are treated. By combining the heat insulating walls (22 to 27), it is possible to thermally isolate the inner and outer metal plates of each of the heat insulating walls (22 to 27) from each other. body(
20) It is possible to minimize internal temperature changes, and heat retention can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view of the main part of the first embodiment of the present invention,
A diagram showing the end structure (A) of the front wall (door) and the left side wall of the casing (20), and the end structure (B) of the left side wall and the rear wall. FIG. 2 is a main part of the second embodiment of the present invention. FIG. 3 is a perspective view of an external appearance of an electronic device casing (20) according to the present invention, and FIG. 4 is a plan sectional view of a main part of a conventional example. In Fig. 1.2.3, 20 is an electronic device housing according to the present invention, and 22 and 23 are a left side wall (insulation wall) and a right side wall (insulation wall).
, 22a, 26a, 27a are heat insulating materials, 22b, 2
6b, 27b are inner metal plates, 22c, 26c, 27
c is an outer metal plate, 22d and 27d are step portions, 22e and 22f are end members, 24 and 25 are an upper wall (insulating wall) and a lower wall (insulating wall), 2
6 and 27 are the front wall (door) (insulation wall) and the rear wall (insulation wall)
, 29a, 29b, 29c, 29d, and 29e are sunshades made of boards,
30 is an electronic device (for example, a repeater); 32A, 32B, and 32C are heat shielding members; 33 is a rivet; 34 is a packing; 35 is a packing contact member; 36, 37, 38, and 39 are L-shaped fittings for fixing. , respectively. Fig. 1 32A, 32B... Heat shielding member Fig. 1 Planar cross-section of essential parts of the second embodiment of the present invention Fig. 2 External perspective view of the electronic device casing (20) according to the present invention Third
figure

Claims (1)

[Scope of Claims] 1. In an electronic device casing formed by combining heat insulating walls formed by fixing metal plates on both sides of a heat insulating material such as foamed resin, each of the electronic device casings constituting the electronic device casing (20) Insulated wall (22-27
) at the end faces of the inner and outer metal plates (22b, 26b, 2
7b, 22c, 26c, 27c) An electronic device casing structure characterized in that heat shielding members (32A, 32B, 32C) having high thermal resistance are interposed between them and the end faces of each of the above heat insulating walls are treated. .