JP2012138516A - Case for electronic device, electronic device unit, and method of manufacturing case for electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a case for electronic devices which can be formed by means of a simple die structure and can collect and drain internal water droplets.SOLUTION: A case 2 for electronic devices includes: a first partition 11 having a first bottom plate 12 and a first side plate 13 raised from an outer edge of the bottom plate; and a second partition 21 having a second bottom plate 22 and a second side plate 23 raised from an outer edge of the bottom plate, and having an edge portion of the second side plate connected to an edge portion of the first side plate of the first partition to form a storage space V for storing electronic devices 31, 32 therein. An inner surface of the first side plate is at least partly a draft surface 16b formed so as to extend to the edge portion of the first side plate and make an acute angle θ1 to a reference plate P1 defined by the edge portion of the first side plate. When the edge portion of the first side plate and the edge portion of the second side plate are connected, a notch 16c formed in the edge portion of the draft surface of the first side plate and an edge portion 23a of the second side plate constitute a drain hole 10b interconnecting the inside and outside of the storage space.

Description

  The present invention relates to an electronic device case, an electronic device unit, and a method for manufacturing an electronic device case.

Conventionally, as a countermeasure against water in an electronic device accommodated in an electronic device case of an electronic device unit, for example, a power module described in Patent Document 1 is resin-sealed. However, since the electronic device unit becomes heavy when resin sealing is performed, it has been studied to provide a relatively thin film such as a waterproof coating on the electronic device instead of resin sealing.
In this case, a gap is generated between the parts constituting the electronic device in the case for the electronic device and has been sealed with resin so far. In order to discharge water droplets that have entered the gap, a drain hole may be formed in the case for electronic equipment.

JP 2008-016564 A

  However, the case for electronic devices is manufactured by injection molding using a mold or the like. However, if the drain hole is manufactured using a slide mechanism of the mold, the mold structure becomes complicated.

  The present invention has been made in view of such problems, and can be manufactured with a simple mold structure, and can collect water droplets inside and effectively discharge the case, and the electronic device An object of the present invention is to provide an electronic device unit including a case for use, and a method for manufacturing the case for electronic device.

In order to solve the above problems, the present invention proposes the following means.
The electronic device case of the present invention includes a first partition having a first side plate standing from an outer edge of the first bottom plate and the first bottom plate, an outer edge of the second bottom plate and the second bottom plate. A second side plate erected from the first partition, and an electronic device is accommodated therein by connecting an edge of the first side plate and an edge of the second side plate of the first partition body A second partition that forms a space, and at least a part of an inner surface of the first side plate extends to an edge of the first side plate and is defined by an edge of the first side plate. The draft surface is formed so as to form an acute angle with respect to a reference plane, and by connecting the edge of the first side plate and the edge of the second side plate, the first side plate A notch formed on at least one of the edge of the draft surface and the edge of the second side plate and the other In the section, and characterized in that it constitutes a drain hole for communicating the inside and outside of the housing space.

  The electronic device case manufacturing method according to the present invention includes a first bottom plate and a first side plate erected from an outer edge of the first bottom plate by any one of injection molding and casting. A first production process for producing a partition body, a second production process for producing a second partition body having a second bottom plate and a second side plate erected from an outer edge of the second bottom plate, and the first An electronic device case having an accommodating space for accommodating an electronic device therein by connecting an edge of the first side plate of one partition and an edge of the second side of the second partition And a connecting step of forming at least a part of an inner surface of the first side plate extending to an edge of the first side plate and an edge of the first side plate. Make an acute angle with the reference plane defined by The electronic device case has a notch formed in at least one of an edge of the draft side of the first side plate and an edge of the second side plate. The water drainage hole which is comprised by the other edge part and connects the inside and outside of the said accommodation space is formed.

In general, when a part is manufactured by injection molding or casting, which is a manufacturing method using a mold, a draft surface is provided on the inner surface of the part in order to remove the molded part from the mold. The draft surface is set so as to form an acute angle with respect to a plane perpendicular to the direction in which the mold is pulled, that is, a reference plane defined by the edge of the first side plate in the present invention.
In the present invention, a draft surface required for the first partition is used when the first partition is manufactured by injection molding or casting. A notch that can be formed without using a slide mechanism or the like is formed in at least one of the edge of the draft surface and the edge of the second side plate. For this reason, the drain hole can be provided in the case for electronic devices by connecting the first partition body and the second partition body manufactured with a simple mold structure.
By disposing the case for electronic equipment so that the drainage hole is located at the same time as the reference plane is parallel to the vertical direction, the water droplet on the draft surface is moved to the edge side and the outside from the drainage hole. Can be effectively discharged.

Further, in the above electronic device case, at least a part of the draft surface is a first section in which an internal angle formed by the connecting portions is set to be larger than 180 ° in a cross section by a plane parallel to the reference plane. And the notch is the furthest away from the connecting portion in at least one of the portion connected to the draft surface and the draft surface of the second side plate. More preferably, it is formed at each end.
According to the present invention, the first inclined surface and the second inclined surface are arranged by arranging the first partition so that the connecting portion formed to protrude toward the inside of the first partition is directed upward. The water droplets on the inclined surface can be moved away from the connecting portion and on the edge side of the draft surface, that is, in the direction in which the through hole is formed. For this reason, the water droplet on the draft surface can be moved to the through hole side more effectively and discharged.

Further, in the electronic device case, at least a part of the draft surface is a first section in which an internal angle formed by a mutual connecting portion is set to be smaller than 180 ° in a cross section by a plane parallel to the reference plane. More preferably, the notch is formed in at least one of the portion connected to the connecting portion and the connecting portion of the second side plate.
According to this invention, by arranging the first partition body so that the connecting portion formed to be recessed toward the outside of the first partition body is directed downward, the first inclined surface and the second Water droplets on the inclined surface can be moved on the connecting portion side and on the edge side of the draft surface, that is, in the direction in which the through hole is formed. For this reason, the water droplet on the draft surface can be moved to the through hole side more effectively and discharged.

In the electronic device case described above, it is more preferable that a flange portion is provided outside the drainage hole in the communication direction.
According to this invention, it can suppress that a water droplet enters accommodation space from the outside of a drain hole.

The electronic device case further includes an outer case that accommodates the first partition and the second partition, and when viewed in the direction of communication of the drain hole, the outer case It is more preferable that an external drain hole is formed at a position that does not overlap the drain hole.
Further, in the above method for manufacturing an electronic device case, the method includes a housing step of housing the first partition body and the second partition body connected to each other in an external case after the connection step, It is more preferable that an external drain hole is formed in the outer case at a position that does not overlap the drain hole when viewed in the direction of communication of the drain hole.
According to this invention, it is possible to more reliably suppress water droplets from entering the accommodation space from various directions with the outer case. Furthermore, it is possible to prevent water droplets that have entered from the external drain hole of the outer case in parallel to the communication direction from entering the accommodation space through the drain hole.

In the electronic device case, it is more preferable that the outer case includes a support surface that is disposed outside the external drain hole and is orthogonal to the reference plane.
According to this invention, by arranging the support surface on a horizontal plane, the external case can be arranged in a direction that facilitates the discharge of water droplets from the external drain hole.

According to another aspect of the invention, there is provided an electronic device unit including the electronic device case according to any one of the above and an electronic device disposed in the accommodation space of the electronic device case.
According to the present invention, the electronic device can be protected from the water droplets by effectively discharging the water droplets from the drain hole.

In the electronic device unit, it is more preferable that the electronic device is a substrate, and the substrate is attached to the first partition so as to be substantially parallel to the reference plane.
According to the present invention, when the electronic device unit is arranged so that the reference plane is parallel to the vertical direction, water droplets attached to the substrate are likely to flow down along the substrate. Therefore, even when water droplets adhere to the substrate, the water droplets can be effectively discharged from the water drain hole of the electronic device case.

  According to the electronic device case and the electronic device unit of the present invention, the electronic device case and the electronic device unit can be manufactured with a simple mold structure, and the internal water droplets can be collected and discharged. In addition, according to the method for manufacturing an electronic device case of the present invention, an electronic device case capable of collecting and discharging water droplets therein can be manufactured with a simple mold structure.

It is a perspective view of the electronic device unit of 1st Embodiment of this invention. It is sectional drawing of the cutting line AA in FIG. It is a perspective view of the 1st case member of the same electronic equipment unit. It is sectional drawing explaining the 1st preparation process which injection-molds a 1st case member using a metal mold | die. It is sectional drawing explaining the connection process which connects a 1st case member and a 2nd case member. It is principal part sectional drawing of the electronic device unit in the modification of 1st Embodiment of this invention. It is a perspective view of the 1st case member in the electronic device unit of 2nd Embodiment of this invention. It is principal part sectional drawing of the 1st case member. It is a perspective view of the 1st case member in the electronic device unit of 3rd Embodiment of this invention. It is sectional drawing of the 1st case member of the modification of this invention.

(First embodiment)
Hereinafter, a first embodiment of an electronic device unit according to the present invention will be described with reference to FIGS. 1 to 6. This electronic device unit has a configuration in which an electronic device such as a substrate is protected from water droplets by a case.
As shown in FIGS. 1 and 2, the electronic device unit 1 of the present embodiment includes a substrate case 10 that forms an accommodation space V therein, and a substrate (electronic device) 31 that is disposed in the accommodation space V of the substrate case 10. , 32 and an outer case (outer case) 40 for accommodating the substrate case 10.
The substrate case 10 and the outer case (outer case) 40 constitute the electronic device case 2 of the present invention.

As shown in FIG. 2, the substrate case 10 includes a first case member (first partition member) 11 having an outer shape formed in a substantially rectangular parallelepiped box shape and provided with an opening on one surface, and a second case member. The case member (second partition body) 21 is integrally connected.
As shown in FIGS. 2 and 3, the first case member 11 includes a first bottom plate 12 formed in a flat plate shape, and a first side plate 13 erected from the entire outer periphery of the first bottom plate 12. have. The first side plate 13 includes four flat wall portions 14 to 17, and the wall portion 14 and the wall portion 16, and the wall portion 15 and the wall portion 17 are arranged to face each other. The wall portion 14 and the wall portion 15, the wall portion 15 and the wall portion 16, the wall portion 16 and the wall portion 17, and the wall portion 17 and the wall portion 14 are connected to each other at their outer edges.
Edge portions 14a to 17a that are opposite to the first bottom plate 12 in the wall portions 14 to 17 are arranged on the reference plane P1.

As shown in FIG. 2, the entire inner surface of the wall portion 14 is a draft surface 14b that extends to the edge portion 14a and is formed to form an acute angle θ1 with respect to the reference plane P1. Similarly, the wall portions 15, 16, and 17 are drafted surfaces 15 b, 16 b, and 17 b that are formed so that the entire inner surfaces form an acute angle θ 1 with respect to the reference plane P 1 (see FIG. 3). .
As shown in FIGS. 2 and 3, in the present embodiment, in the wall portion 14, a notch 14 c that penetrates the wall portion 14 in the plate thickness direction is formed in the center portion in the longitudinal direction of the edge portion 14 a. . Similarly, in the wall portion 16, a notch 16 c penetrating the wall portion 16 in the plate thickness direction is formed in the center portion in the longitudinal direction of the edge portion 16 a.
The first bottom plate 12 is provided with a plurality of bosses 12a protruding from the inner surface of the first bottom plate 12 to the reference plane P1 side.

The second case member 21 is formed in the same shape as the first case member 11 except that the notches 14c and 16c are not formed. That is, as shown in FIG. 2, the second case member 21 has a second bottom plate 22 and a second side plate 23 erected from the entire outer edge of the second bottom plate 22.
The entire inner surface of the second side plate 23 is a draft surface 23b formed to form an acute angle θ2 with respect to the reference plane P2 defined by the edge 23a of the second side plate 23.
The acute angle θ1 in the first case member 11 and the acute angle θ2 in the second case member 21 can take any value greater than 0 ° and less than 90 °. However, it is preferable that the acute angles θ1 and θ2 are small in order to facilitate discharge of water droplets, and it is preferable that the acute angles θ1 and θ2 are large in order to improve the storage property of the substrates 31 and 32 in the substrate case 10.
The second bottom plate 22 is provided with a plurality of bosses 22a that protrude from the inner surface of the second bottom plate 22 toward the reference plane P2.
The second case member 21 and the first case member 11 described above are formed of resin using an injection molding method.

  The first case member 11 and the second case member 21 configured as described above are connected when the edge portions 14a to 17a of the first case member 11 and the edge portion 23a of the second case member 21 are connected. The notch 14c of the first case member 11 and the edge 23a of the second case member 21 constitute a drain hole 10a that communicates the inside and outside of the accommodation space V. Similarly, the drain hole 10b is constituted by the notch 16c and the edge 23a. At this time, the reference plane P1 and the reference plane P2 are arranged on the same plane.

  The substrate 31 is positioned on the first bottom plate 12 side from the edges 14a to 17a and is substantially parallel to the reference plane P1, and is attached to the boss 12a of the first case member 11 by a screw member (not shown). It is attached. Similarly, the board 32 is positioned closer to the second bottom plate 22 than the edge 23a and is substantially parallel to the reference plane P2, so that the boss 22a of the second case member 21 is not screwed or the like. It is fixed to.

The exterior case 40 includes a first exterior case member 51 and a second exterior case member 61 that are substantially the same shape as the first case member 11 and are formed larger than the first case member 11. The first outer case member 51 and the second outer case member 61 are formed in a box shape having a substantially rectangular parallelepiped shape, and an opening is provided on one surface.
The first exterior case member 51 has a third bottom plate 52 formed in a flat plate shape, and a third side plate 53 erected from the entire outer periphery of the third bottom plate 52. On the inner surface of the third side plate 53, the first case member 11 is separated from the third bottom plate 52 and the third side plate 53 in a recess formed by the third bottom plate 52 and the third side plate 53. A holding member 54 that holds the state is provided.
A pedestal 56 is attached to one side of the outer surface of the third side plate 53 so as to protrude from the outer surface. A surface on the front end side in the protruding direction of the pedestal 56 is a support surface 56a.
A handle 57 having a curved shape and having both ends attached to the outer surface of the third side plate 53 is provided on the outer surface of the third side plate 53 on the side opposite to the base leg 56.

The second exterior case member 61 has a fourth bottom plate 62 formed in a flat plate shape and a fourth side plate 63 erected from the entire outer edge of the fourth bottom plate 62. At the edge of the fourth side plate 63, when the substrate case 10 is accommodated in the exterior case members 51 and 61 connected to each other, a notch 63a is formed at a position on the water drain hole 10a side. Cutouts 63b are respectively formed at positions on the 10b side.
On the inner surface of the fourth side plate 63, the second case member 21 is separated from the fourth bottom plate 62 and the fourth side plate 63 in a recess formed by the fourth bottom plate 62 and the fourth side plate 63. A holding member 64 that holds the state is provided.
A pedestal 66 is attached to one side of the outer surface of the fourth side plate 63 so as to protrude from the outer surface. A surface of the base leg 66 on the front end side in the protruding direction is a support surface 66a. The support surfaces 56a and 66a are disposed outside an external drain hole 40b described later (on the opposite side of the external drain hole 40b to the substrate case 10).
A handle 67 having a curved shape and having both ends attached to the outer surface of the fourth side plate 63 is provided on the outer surface of the fourth side plate 63 on the side opposite to the pedestal 66.

In this embodiment, as shown in FIG. 2, when the edge of the third side plate 53 of the first exterior case member 51 and the edge of the fourth side plate 63 of the second exterior case member 61 are connected. The following adjustments are made.
First, the outer drain holes 40a and 40b that communicate the inside and outside of the exterior case 40 are configured by the edge of the first exterior case member 51 and the notches 63a and 63b of the second exterior case member 61, respectively. . The external drain hole 40a is formed at a position that does not overlap the drain hole 10a when viewed in parallel with the communication direction Z of the external drain hole 40a. Similarly, the external drain hole 40b is formed at a position that does not overlap the drain hole 10b when viewed in parallel with the communication direction Z of the external drain hole 40b.
The support surface 56a of the pedestal 56 and the support surface 66a of the pedestal 66 are disposed on the same virtual plane Q, and the virtual plane Q is set to be substantially orthogonal to the reference planes P1 and P2.
Furthermore, the handle 57 of the first exterior case member 51 and the handle 67 of the second exterior case member 61 are integrated together with connection.

Next, the manufacturing method of the case 2 for electronic devices which manufactures the case 2 for electronic devices comprised as mentioned above is demonstrated.
First, in the first manufacturing step, as shown in FIG. 4, the first case member 11 having the first bottom plate 12 and the first side plate 13 is formed by a known injection molding method using molds W1 and W2. Mold. At this time, the draft angle surfaces 14b to 17b of the first case member 11 are set to have a draft angle with respect to the direction D which is a direction in which the molds W1 and W2 are pulled out.
Subsequently, in the second manufacturing step, the second case member 21 is molded by an injection molding method using a mold (not shown).
Next, in the connecting step, as shown in FIG. 5, the housing space V is formed inside by connecting the edges 14 a to 17 a of the first case member 11 and the edge 23 a of the second case member 21. A substrate case 10 is formed.

Subsequently, in the housing step, the substrate case 10 is attached to the first exterior case member 51 by the holding member 54. The substrate case 10 is attached to the second exterior case member 61 by the holding member 64, and the exterior case member 51, 61 is connected to the exterior case by connecting the edge of the third side plate 53 and the edge of the fourth side plate 63. 40 is configured. At this time, the substrate case 10 is accommodated in the exterior case 40, and the electronic device case 2 is manufactured.
In the method for manufacturing an electronic device case, the second manufacturing process may be performed before the first manufacturing process, or the first manufacturing process and the second manufacturing process may be performed simultaneously.

In the electronic device unit 1 configured as described above, the water droplets that have entered the accommodation space V of the substrate case 10 have the support surfaces 56a and 66a of the electronic device unit 1 arranged on the horizontal plane G as shown in FIG. Thus, the bottom plates 12 and 22 and the substrates 31 and 32 integrated as the electronic device unit 1 are arranged substantially parallel to the vertical direction (the thickness directions of the bottom plates 12 and 22 and the substrates 31 and 32 are substantially parallel to the horizontal plane G). And draft angle surfaces 14b to 17b, 23b are arranged so as to intersect the horizontal plane G. For this reason, the water droplets adhering to the inner surfaces of the case members 11 and 21 and the substrates 31 and 32 move downward due to the influence of gravity, and are on the portions of the draft surface 16b and the draft surface 23b disposed below. Collected and discharged from the drain hole 10 b to the space between the outer case 40 and the substrate case 10.
Further, the water droplets collected on the portion of the inner surface of the third side plate 53 and the fourth side plate 63 disposed below are discharged to the outside of the exterior case 40 through the external drain hole 40b.

  Even when the electronic device unit 1 is disposed upside down, the water droplets entering the accommodation space V are discharged to the outside through the water drain hole 10a of the substrate case 10 and the external water drain hole 40a of the exterior case 40. The

Generally, when a part is molded by an injection molding method using a mold, a draft surface is provided on the inner surface of the part in order to remove the molded part from the mold. The draft surface is set so as to form an acute angle with respect to a plane perpendicular to the direction in which the mold is pulled, that is, the reference plane P1 defined by the edge of the first side plate 13 in the present invention.
According to the electronic device case 2 and the method for manufacturing the electronic device case 2 of the present embodiment, the draft surface 14b required for the first case member 11 when the first case member 11 is formed by injection molding. ~ 17b are used. Notches 14c and 16c that can be formed without using a slide mechanism or the like are formed at the edges of the draft surfaces 14b and 16b. For this reason, the drain holes 10a and 10b can be provided in the case 2 for electronic devices by connecting the 1st case member 11 and the 2nd case member 21 which were shape | molded by the simple metal mold | die structure.
By disposing the electronic device case 2 so that the reference planes P1 and P2 are parallel to the vertical direction and the water drain hole 10b is positioned below, water drops on the draft surface 16b are moved to the edge 16a side. Thus, the water can be effectively discharged from the drain hole 10b to the outside of the substrate case 10.

Since the case 2 for electronic devices is provided with the exterior case 40, it can suppress more reliably that a water droplet enters into the storage space V from various directions. Furthermore, it is possible to prevent water droplets that have entered parallel to the communication direction Z from the external drain hole 40b of the outer case 40 from entering the accommodation space V from the drain hole 10b.
Support legs 56 a and 66 a are provided on the base legs 56 and 66 of the outer case 40. For this reason, by arranging the support surfaces 56a and 66a on the horizontal plane G, the external case 40 can be arranged in a direction that facilitates the discharge of water droplets from the external drain hole 40b.

Moreover, according to the electronic device unit 1 of this embodiment, the board | substrates 31 and 32 can be protected from a water drop by discharging | emitting a water drop effectively from the drain holes 10a and 10b.
The substrate 31 is attached to the first case member 11 so as to be substantially parallel to the reference plane P1. Thereby, when the electronic device unit 1 is arranged so that the reference plane P <b> 1 is parallel to the vertical direction, water droplets attached to the substrate 31 easily flow down along the substrate 31. Therefore, even when water droplets adhere to the substrate 31, the water droplets can be effectively discharged from the water drain holes 10a and 10b of the electronic device case 2.

In addition, in this embodiment, as shown in FIG. 6, you may comprise so that the collar part 71 may be provided in the outer side of the communication direction Z of the drain hole 10b. The flange portion 71 is disposed outside the communication direction Z of the notch 16 c in the first case member 11 and is connected to the edge portion 16 a of the wall portion 16 by the connection piece 72.
By providing the flange 71, it is possible to prevent water droplets from entering the accommodation space V from the outside in the communication direction Z with respect to the water drain hole 10b.

  Moreover, in this embodiment, the notches 14c and 16c are formed only in the first case member 11, and connect the edge portions 14a to 17a of the first case member 11 and the edge portion 23a of the second case member 21. Thus, the drain holes 10a and 10b are configured. However, the notches are formed in both the first case member 11 and the second case member 21, and both the notches are connected by connecting the first case member 11 and the second case member 21. The drainage hole may be configured integrally.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. 7, but the same parts as those of the above-described embodiment will be denoted by the same reference numerals, description thereof will be omitted, and only different points will be described.
The electronic device unit of the present embodiment is replaced with a first case member 81 shown in FIG. 7 and a second case (not shown) instead of the first case members 11 and 21 of the electronic device unit 1 of the first embodiment. And a member.
The inner surfaces of the wall portions 84 to 87 in the first case member 81 are drafted surfaces 84a to 87a formed so as to form an acute angle θ1 with respect to the reference plane P1.
The draft surface 86a is formed from a first inclined surface 86c and a second inclined surface 86d in which the inner angle α1 formed at the connecting portion 86b is set to be greater than 180 ° in a cross section by a plane parallel to the reference plane P1. Become. The first inclined surface 86 c and the second inclined surface 86 d are formed to extend to the edge of the wall portion 86.
Notches 86e and 86f are formed at the end portions of the first inclined surface 86c and the second inclined surface 86d that are farthest from the connecting portion 86b.
Similarly to the draft surface 86a, the draft surfaces 84a, 85a, 87a are also provided with a first slope, a second slope, and a notch.

  The second case member is formed in the same shape as the first case member 81 except that notches are not formed.

  By configuring the first case member 81 in this way, when the first case member 81 is arranged so that the connecting portion 86b protrudes upward, the first inclined surface 86c and the second inclined surface 86c are arranged. The water droplet on the surface 86d can be moved in the direction away from the connecting portion 86b due to the influence of gravity and in the edge side of the draft surface 86a, that is, in the direction in which the notches 86e and 86f are formed. For this reason, the water droplet on the draft surface 86a can be more effectively moved to the notches 86e and 86f and discharged.

In the present embodiment, as shown in FIG. 8, the draft surface 86a may be configured to have a surface 86g in addition to the inclined surfaces 86c and 86d. Further, notches 86e and 86f are not formed in the first case member 81, the connecting portion between the first inclined surface 86c and the draft surface 85a, and the second inclined surface 86d and the draft surface 87a. A notch may be provided at each edge of the second case member connected to the connecting portion. Further, these notches may be provided in the second case member, and the above-described notches 86e and 86f may be provided in the first case member 81.
The first inclined surface, the second inclined surface, and the cutout only need to be formed on at least the draft surface 86a, and both the slope surfaces and cutouts of the draft surfaces 84a, 85a, 87a are formed. It does not have to be.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. 9, but the same parts as those of the above-described embodiment will be denoted by the same reference numerals, the description thereof will be omitted, and only different points will be described.
The electronic device unit of this embodiment is replaced with the first case member 91 and the second case not shown in FIG. 9 instead of the first case members 11 and 21 of the electronic device unit 1 of the first embodiment. And a member.
The inner surfaces of the wall portions 94 to 97 in the first case member 91 are drafted surfaces 94a to 97a formed so as to form an acute angle θ1 with respect to the reference plane P1, respectively.
The draft surface 96a is formed of a first inclined surface 96c and a second inclined surface 96d in which an internal angle α2 formed in the connecting portion 96b is set to be smaller than 180 ° in a cross section by a plane parallel to the reference plane P1. Become. The first inclined surface 96 c and the second inclined surface 96 d are formed so as to extend to the edge of the wall portion 96. A notch 96e is formed in the vicinity of the connecting portion 96b of the wall portion 96.
Similarly to the draft surface 96a, the draft surfaces 94a, 95a, and 97a are also provided with a first slope, a second slope, and a notch.

  The second case member is formed in the same shape as the first case member 91 except that notches are not formed.

By configuring the first case member 91 in this way, when the first case member 91 is disposed so that the connecting portion 96b is recessed downward, the first inclined surface 96c and the second inclined surface The water droplet on 96d can be moved to the edge of the draft surface 96a, that is, in the direction in which the notch 96e is formed, due to the influence of gravity. For this reason, the water droplet on the draft surface 96a can be moved to the notch 96e side and discharged more effectively.
Furthermore, compared to the second embodiment, the number of notches required for one draft surface can be reduced. For this reason, since water droplets can be concentrated in a small number of water drain holes, it is possible to prevent water droplets from remaining in the vicinity of the water drain holes and to simplify the structure of the mold for forming the first case member 91. can do.

In the present embodiment, there may be a portion of the draft surface 96a that is not the inclined surfaces 96c and 96d. Moreover, the notch 96e is not formed in the 1st case member 91, but the notch may be provided in the edge part of the 2nd case member connected to the connection part 96b. Further, the cutout 96e may be provided in the first case member 91 while the cutout is provided in the second case member.
The first inclined surface, the second inclined surface, and the notch are only required to be formed on at least the draft surface 96a, and both the inclined surfaces and the notches of the draft surfaces 94a, 95a, and 97a are formed. It does not have to be.

The first to third embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the configuration does not depart from the gist of the present invention. Changes are also included. Furthermore, it goes without saying that the configurations shown in the embodiments can be used in appropriate combinations.
For example, in the first to third embodiments, the entire inner surface of the first side plate 13 is a draft surface that forms an acute angle θ1 with respect to the reference plane P1. However, the draft surface is formed on a part of the inner surface of the first side plate 13, and the remaining part of the inner surface of the first side plate 13 does not form an acute angle with respect to the reference plane P <b> 1. You may form so that it may become a right angle or an obtuse angle with respect to the plane P1.
Even if the first case member 11 is configured in this manner, the inner surface 14b has an acute angle θ3 with respect to the mold split surface S by removing a mold (not shown) in the direction E as shown in FIG. None, the inner surface 16b can be configured to form an acute angle θ4. For this reason, even on the inner surface 14b perpendicular to the reference plane P1, a draft angle is set with respect to the dividing surface S of the mold, and the molded first case member 11 is removed from the mold. Can be removed.

In the first to third embodiments, the case member is formed of resin using an injection molding method. However, these may be formed of metal or the like using a casting method.
In the first to third embodiments, the case 2 for electronic devices may not include the exterior case 40.

DESCRIPTION OF SYMBOLS 1 Electronic device unit 2 Case 10a, 10b Drain hole 11, 81, 91 1st case member (1st partition)
12 1st bottom plate 13 1st side plate 14a-17a, 23a Edge part 14b-17b, 23b, 84a-87a, 94a-97a Draft surface 21 2nd case member (2nd partition)
22 Second bottom plate 23 Second side plate 31, 32 Substrate (electronic equipment)
40 Exterior case (outer case)
40a, 40b External drain holes 56a, 66a Support surfaces 86b, 96b Connecting portions 86c, 96c First inclined surfaces 86d, 96d Second inclined surfaces P1, P2 Reference plane V Housing space Z Communication direction α1, α2 Inner angle θ1 Sharp angle

Claims (10)

A first partition having a first bottom plate and a first side plate standing from an outer edge of the first bottom plate;
A second side plate erected from an outer edge of the second bottom plate and the second bottom plate; and an edge portion of the first side plate and an edge portion of the second side plate of the first partition member. A second partition that forms an accommodation space for accommodating an electronic device by connecting; and
With
At least a part of the inner surface of the first side plate extends to the edge of the first side plate and is formed so as to form an acute angle with respect to a reference plane defined by the edge of the first side plate. It is a slope surface,
By connecting the edge of the first side plate and the edge of the second side plate, at least one of the edge of the draft surface and the edge of the second side plate of the first side plate A case for electronic equipment, wherein the formed notch and the other edge portion constitute a drain hole that communicates the inside and outside of the housing space. At least a part of the draft surface is a first inclined surface and a second inclined surface in which an internal angle formed by a mutual connecting portion is set larger than 180 ° in a cross section by a plane parallel to the reference plane. And
The notch is formed at an end portion of the second side plate that is farthest from the coupling portion in at least one of the portion connected to the draft surface and the draft surface. The electronic device case according to claim 1. At least a part of the draft surface is a first inclined surface and a second inclined surface in which an inner angle formed by a mutual connecting portion is set to be smaller than 180 ° in a cross section by a plane parallel to the reference plane. And
2. The electronic device case according to claim 1, wherein the notch is formed in at least one of a portion connected to the connecting portion and the connecting portion of the second side plate.   The case for electronic devices according to any one of claims 1 to 3, further comprising a flange on the outside in the communication direction of the drain hole. An outer case that houses the first partition and the second partition;
5. The external drain hole is formed in the outer case at a position that does not overlap the drain hole when viewed in the communication direction of the drain hole. The case for electronic devices as described in the paragraph.   The electronic device case according to claim 5, wherein the outer case includes a support surface that is disposed outside the outer drain hole and is orthogonal to the reference plane. A case for electronic equipment according to any one of claims 1 to 6,
An electronic device disposed in the housing space of the electronic device case;
An electronic device unit comprising: The electronic device is a substrate;
The electronic device unit according to claim 7, wherein the substrate is attached to the first partition so as to be substantially parallel to the reference plane. A first production step of producing a first partition having a first bottom plate and a first side plate standing from an outer edge of the first bottom plate by any one method of injection molding and casting;
A second production step of producing a second partition having a second side plate standing from an outer edge of the second bottom plate and the second bottom plate;
An electronic device having an accommodation space for accommodating an electronic device therein by connecting an edge of the first side plate of the first partition and an edge of the second side plate of the second partition. A connection step for forming a case for,
In a method of manufacturing an electronic device case comprising:
At least a part of the inner surface of the first side plate extends to the edge of the first side plate and is formed so as to form an acute angle with respect to a reference plane defined by the edge of the first side plate. It is a slope surface,
The electronic device case includes a notch formed on at least one of an edge of the draft surface of the first side plate and an edge of the second side plate and the other edge, A method for manufacturing a case for electronic equipment, characterized in that a drain hole is formed to communicate between the inside and outside of the housing space. After the connecting step, comprising a housing step of housing the first partition body and the second partition body connected to each other in an outer case,
10. The electronic device according to claim 9, wherein an external drain hole is formed in the outer case at a position that does not overlap the drain hole when viewed in the direction of communication of the drain hole. Case manufacturing method.

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