JP2527635Y2 - Drip-proof storage case - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a case for storing electronic components.

[0002]

2. Description of the Related Art A case for accommodating an electronic component such as a controller case usually has a case body and a lid for closing an open end of an internal space of the case body. Numerous electronic components and harnesses connected to them are housed in a narrow internal space.

[0003] This controller is sometimes used under severe conditions, and water droplets or vapors may enter the internal space from the outside and adhere to the inner surface of the wall. When an electronic component is a heat-generating component, water droplets may adhere to the inner surface of the wall due to a temperature difference between the inside and outside of the case due to the heat generated by the electronic component.

[0004]

[Problems to be Solved by the Invention] These water droplets cause malfunctions of electronic components, and it is desired to remove them. However, in a conventional case for storing electronic components,
Since the inner surface of the wall that divides the internal space was composed of vertical and horizontal components, water droplets adhering to the inner surface of the storage case did not flow down the wall and flowed down, but dropped or dropped directly on the built-in electronic components, etc. Or, it may accumulate in the corner of the internal space.

[0005] In view of the above, it is desired to develop a technology which can satisfactorily discharge water droplets adhering to the inner surface of the wall of the internal space to the outside, has a simple structure, and is easy to implement.

The present invention has been made in view of the above-mentioned circumstances, and is capable of satisfactorily discharging water droplets adhering to the inner surface of the wall of the internal space of the internal space to the outside. The purpose of the present invention is to provide an easy-to-use storage case.

[0007]

In response to this object, a drip-proof storage case according to the present invention is capable of storing electronic components and has at least one of a front surface and a rear surface which is divided by an inner wall surface. A storage case comprising: a case body having an internal space with one surface being open; and a lid engaging with the case body and closing the open surface. In the vicinity of the edge of the open surface of the main body, a groove or a groove that forms a flow path in cooperation with a fitting groove having an uneven cross-sectional shape composed of a groove or a bank or both of the edge of the lid or the both. A fitting line having an uneven cross-sectional shape composed of a bank portion or both is formed, and the fitting line of the case body is a side fitting line located corresponding to a side portion of the edge. And a top fitting strip located corresponding to the top of the edge and a bottom located corresponding to the bottom of the edge A fitting ridge, an inclined portion fitting ridge communicating with the side fitting ridge and the bottom fitting ridge and being positioned at an inclination, and a communication portion with the inclined portion fitting ridge; It is characterized by having a drainage groove communicating with the nearest bottom fitting strip.

[0008]

[Operation] Water droplets adhering to the inner surface of the case wall are transmitted to the fitting strip, flow down with the side fitting strip as a guide, and then flow down the inclined fitting strip to form a drain hole at the lowermost end. And drained out of the drain hole to be eliminated. The drain hole is formed not in a straight line but in a maze shape to prevent water, dust and the like scattered from the outside from entering the internal space.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings showing one embodiment. 1 to 7, reference numeral 1 denotes a storage case.
The storage case 1 includes a case body 2.
The case body 2 has an internal space 5 defined by an inner surface 4 of the wall 3. The inner space 5 is open at the front and rear ends.
Is closed by a front lid 6 and its rear end is closed by a rear lid 7. The electronic component 8 and the circuit board 11 are housed in the internal space 5. Along the edge of the rear end 13 of the case body 2, a fitting strip 14 makes a horseshoe-like circuit. Fitting strip 14
Is constituted by one or both of a groove 19 having a rectangular cross section and a bank 20 having a rectangular cross section. In this embodiment, the fitting strip 14 is composed of both the groove strip 19 and the bank strip 20 which are formed almost in parallel at the rear end. It is configured. Further, the front end is composed of only the bank line 20.

The fitting strip 14 of the rear cover 7 comprises an upper horizontal portion 15, a left vertical portion 16, a right vertical portion 17, a bottom horizontal portion 18, and inclined portions 21 and 22 according to the shape of the edge. The upper horizontal portion 15 has left and right vertical portions 16, 1 at both ends.
7 and the lower ends of the left and right vertical portions 16 and 17 are connected to the upper ends of the left and right inclined portions 21 and 22, respectively.
The lower ends of 1, 2 are continuous with both ends of the bottom horizontal portion 18. In the vicinity of both ends of the bottom horizontal portion 18, that is, in the vicinity of the continuous portion 23 with the left and right inclined portions 21 and 22, the drain holes 24
Are formed in communication with the bottom horizontal portion 18 at the front end and the rear end. As shown in FIG. 7, the drain hole 24 is formed by connecting the outer portion 25 and the inner portion 26 with each other, but the center line 27 of the outer portion 25 and the center line 28 of the inner portion 26 The water drain holes 24 are not formed linearly as a whole, but have a bent shape.

On the other hand, a fitting ridge 31 is also formed around the periphery of the front cover 6. The fitting strip 31 is formed so as to correspond to the entire shape of the fitting strip of the case body 2, and forms a bank section 32 having a rectangular cross section and a rectangular recess section. It is composed of one or both of the grooves 33.

When the rear cover 7 is closed to the rear end of the case main body 2, the bank line 32 of the rear cover 7 is fitted into the groove 19 of the case main body 2, and the case main body 2 is closed. Bank line 20 is the rear lid 7
Is inserted into the groove 33. Fittings 34 and 35 formed of a bank and a groove having the same structure are also formed on the rear end 13 and the front lid 6 of the case body 2 so that they are fitted into each other.

In the storage case configured as described above, water droplets adhering to the inner surface 4 of the case main body 2 and the front lid 6 and the rear lid 7 move due to vibration of the case main body 2 and the like. The fitting strips 14, 31, 34, and 35 come into contact with each other,
Flow down at 1,34,35 as a guide.

As an example, the behavior of water droplets on the fitting strips 14 and 31 will be described. Water drops flowing down along the fitting strips 14 and 31 are separated from the right and left vertical portions 15 and
16 to the left and right inclined portions 21 and 22,
It is advanced to the central part below 4, 31 and the right and left inclined part 2
The water is discharged from the vicinity of the lower ends of the first and second through the drain hole 24 to the outside.

[0015]

[Effect of the Invention] In the storage case of the present invention, the fitting strip comes into contact with and catches water droplets, the captured water drop does not scatter, and the fitting strip guides the captured water drop to flow down. Therefore, the flow of water droplets is smooth. In particular, since the left and right inclined portions of the fitting strip actively collect water droplets toward the drain holes, the water droplets are discharged well without collecting at the corners of the internal space of the storage case.

On the other hand, the drain holes are formed not in a straight line but in a flow path bent in a maze, so that it is ensured that external water droplets and dust enter the case body 2. Can be prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of a storage case.

FIG. 2 is a front view showing a case body.

FIG. 3 is a longitudinal sectional view of a case body.

FIG. 4 is a lateral partial cross-sectional view of the case body.

FIG. 5 is an enlarged view of a portion A in FIG.

FIG. 6 is an enlarged view of a portion B in FIG. 2;

FIG. 7 is an enlarged sectional view of a drain hole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage case 2 Case main body 3 Wall 4 Inner surface 5 Internal space 6 Front lid 7 Rear lid 8 Electronic component 11 Circuit board 12 Front end 13 Rear end 14 Fitting strip 15 Upper horizontal part 16 Left vertical part 17 Right vertical part Reference Signs List 18 bottom horizontal part 19 groove 20 bank line 21 left inclined part 22 right inclined part 23 continuous part 24 drainage hole 25 outer part 26 inner part 27 outer center line 28 inner center line 31 fitting line 32 bank line 33 groove 34 Mating line 35 Mating line

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Hei 2-89887 (JP, U) Japanese Utility Model Sho 59-195778 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] 1. A case body having an internal space capable of accommodating an electronic component, having a side surface defined by an inner wall surface and opening at least one of front and rear surfaces, and said case body. A lid that engages with the lid and closes the open surface, wherein a groove or a bank at the edge of the lid is provided near the edge of the open surface of the case body. A groove having an uneven cross-sectional shape formed of a groove or a bank portion or both in cooperation with a fitting line having a concave-convex cross-sectional shape formed of or both thereof is formed,
The fitting line of the case body includes a side fitting line positioned corresponding to the side of the edge, a top fitting line positioned corresponding to the top of the edge, and the edge. A bottom fitting line positioned corresponding to the bottom portion, and a slope fitting portion that communicates with the side fitting portion and the bottom fitting portion and is positioned at an angle; A drip-proof storage case, comprising: a drain groove communicating with the bottom fitting strip immediately adjacent to a communication part with the fitting strip. 2. The drip-proof storage case according to claim 1, wherein the drain groove is formed to bend with respect to a thickness direction of a wall of the case body.