JPH0727668Y2 - Waterproof structure of case - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to various housings installed outdoors such as a traffic signal controller housing, and more particularly to a waterproof structure formed in an opening of the housing. is there.

[Conventional technology]

Conventionally, for example, in order to prevent rainwater and the like from entering the inside of various housings installed outdoors, such as a controller for a traffic signal, from its opening, that is, the joint between the housing and the lid. ,
A waterproof structure in which a rubber or synthetic resin packing is interposed between the outer peripheral edge of the opening of the housing and the inner peripheral edge of the lid is used.

[Problems to be solved by the device]

However, in the conventional waterproof structure of the casing using the rubber or synthetic resin packing, in order to prevent intrusion of wind and rain sprayed from the lateral direction, from the lid side of the packing to the extent that it is not defeated by the external pressure of the wind and rain. The method of increasing the tightening force of the to obtain its waterproofness was used. Therefore,
Not only is it inconvenient to handle because a large force is required to open and close the lid, but the larger the housing, the larger the tightening area for packing, which makes it difficult to obtain a predetermined tightening force. It was

Further, the packing itself made of rubber or the like has a problem that it deteriorates with time due to the influence of sunlight, wind and rain, etc., and the waterproofness thereof deteriorates.

The present invention has been made in view of the above problems, and provides a waterproof structure for a housing that does not change over time with respect to the waterproof effect of the housing and facilitates opening and closing of a lid with respect to the housing. It is intended.

[Means for Solving the Problems]

In order to achieve the above object, a waterproof structure for a housing according to the present invention is provided with a plurality of ribs on the peripheral edge of an opening of the housing and an inner peripheral edge of a lid that is openably and closably attached to the opening. A groove-shaped seal member having a groove is integrally attached, and when the rib end sides are opposed to each other, the gap formed between the rib ends and the groove space of the groove-shaped seal member are continuous vertically and horizontally. By forming the gap formed between the rib ends to be narrower than the width of the groove space of the groove-shaped seal member, the wind pressure that tries to enter the housing is reduced and the waterproof property is improved. And a plurality of gaps formed stepwise between the ribs of the other groove-shaped seal member facing each other by providing height differences alternately with respect to the protruding length of the rib of the one groove-shaped seal member. To prevent rainwater from entering the housing. In which took measures that.

[Action]

Thus, in the above-mentioned configuration, the wind pressure entering from the outside is weakened by the labyrinthine ventilation path between the gap and the groove space formed by the ribs of the groove-shaped sealing members that are alternately opposed to each other, and the entry of wind and rain into the housing. To prevent.

Further, since the tips of the ribs forming the groove-shaped sealing member do not come into contact with the tips of the ribs facing each other, the opening and closing of the lid with respect to the housing can be facilitated, and the groove-shaped sealing member is still possible. Does not cause deformation due to tightening, so there is no wear damage during use of the housing.

〔Example〕

An embodiment of a waterproof structure for a housing according to the present invention will be described below with reference to the drawings.

The drawings show an embodiment in which the waterproof structure of the housing according to the present invention is applied to a controller for a traffic signal, and 1 is a housing for accommodating and protecting a controller for a traffic signal and the like. The case 1 is configured such that a lid 3 is openably and closably attached via a hinge 2 formed on the side thereof. Further, on the back surface or the side surface of the housing 1, a mounting metal fitting for fixing the housing 1 to the support pillar A or the like is configured so that the housing 1 can be attached and detached using fastening members such as a plurality of bolts. Has become.

Reference numeral 4 denotes a groove-shaped seal member made of metal or hard synthetic resin integrally attached to the peripheral edge of the opening of the housing 1. In this embodiment, at least left and right side edge portions and a lower edge portion except the upper edge portion are provided. In addition to being formed at the edge portion, two ribs 5, 5 are alternately provided with a height difference, and groove spaces X, X having a predetermined width are formed and projected. Further, 6 is a groove shape integrally attached to the left and right side edge portions and the lower edge portion except at least the upper edge portion in the inner peripheral edge of the lid 3 so as to face the groove-shaped seal member 4 on the side of the housing 1. It is a seal member, and is formed by forming ribs 5 and 5 on the housing 1 side and three ribs 7, 7 and 7 facing the edge of the housing 1 itself with a height difference therebetween. . Thus, with the lid 3 closed in the opening of the housing 1, the ribs 5 and 5 on the housing 1 side and the ribs 7, 7 and 7 on the lid 3 side.
As shown in FIGS. 3 and 4, each has a predetermined length and faces each other, and there is a gap between the rib ends of the plurality of ribs 5, 5, 7, 7, 7, which face each other. Forming Y, Y, Y,
The gap Y and the groove space X form a labyrinthine ventilation passage that extends vertically and horizontally from the outside to the inside of the housing 1. This ventilation passage weakens the wind pressure that intrudes into the housing 1 from the outside and prevents rainwater and the like from entering. In particular, in this embodiment, as shown in FIG. Have an alternating height difference, the gaps Y, Y formed between the facing ribs 5, 7 are arranged in a stepwise staggered manner, and the intervening groove spaces X, X are the gaps Y, Because it is wider than Y (X> Y),
The interference effect on the wind pressure is high, and the wind pressure heading into the housing 1 is effectively reduced. Reference numeral 8 denotes a packing interposed between the casing 1 and the upper edge of the lid 3 to prevent rainwater and the like from entering from above. Further, 9 is a locking member for adjusting the position when the lid 3 is covered with the housing 1. The locking member 9 is mounted at an appropriate position on the periphery of the opening of the housing 1 with its tip abutting against the inner surface of the lid 3.

In the present invention, the number of ribs 5 and 7 formed in one groove-shaped sealing member 4 and 6 is not necessarily limited to the above-mentioned embodiment, and may be formed by appropriately combining gaps and groove spaces. The design can be changed freely according to the conditions. Further, the groove-shaped sealing members 4 and 6 may be formed at the entire peripheral edge of the opening of the housing 1 and the corresponding entire inner peripheral edge of the lid 3, and the structure of the packing 8 may be omitted. is there.

Further, as long as the ventilation passage formed by the groove space X and the gap Y including the peripheral portions of the housing 1 and the lid 3 can be formed in a stepwise staircase, as shown in FIG. It is also possible to form the projecting length of itself to be the same length.

In the above embodiment, the groove-shaped sealing members 4, 6 made of metal or the like are used.
Are fixed to the peripheral edge of the opening of the housing 1 and the inner peripheral edge of the lid 3 by screwing. The groove-shaped sealing members 4 and 6 are integrated with the peripheral edge of the opening of the housing 1 and the inner peripheral edge of the lid 3. The groove-shaped sealing members 4 and 6 made of a hard synthetic resin or the like can be formed by molding, or can be fixed to the peripheral edges of the groove-shaped sealing members 4 and 6 by screwing or welding.

[Effect of device]

Since the waterproof structure of the housing according to the present invention is configured as described above, the plurality of gaps and the groove spaces formed by the plurality of ribs facing each other reduce the intrusion pressure of wind and rain from the outside, It is possible to prevent rainwater and the like from entering the body and improve waterproofness.

Further, since the tips of the ribs forming the groove-shaped seal member do not contact the ribs facing each other, the lid can be easily opened and closed regardless of the size of the housing. Since it can be made of a metal or a hard synthetic resin material, its durability can be remarkably improved, and it has excellent practical effects.

[Brief description of drawings]

1 is an overall perspective view showing a waterproof structure of a housing according to the present invention, showing a state in which a lid is opened with respect to the housing, and FIG. 2 shows a groove-like sealing member formed around the opening of the housing. A front view of a main part, FIG. 3 is a plan sectional view of a main part showing a combined state of a groove-shaped seal member in a state where an opening of a housing is covered with a lid, and FIG. FIG. 3 is an enlarged plan sectional view of an essential part showing another embodiment of the groove-shaped sealing member according to the present invention. 1 ... Case, 3 ... Lid 4,6 ... Groove-shaped sealing member, 5, 7 ... Rib X ... Groove space, Y ... Gap

Claims (3)

[Scope of utility model registration request] 1. A groove-shaped seal member having a plurality of ribs is integrally attached to an opening peripheral edge of a housing and an inner peripheral edge of a lid which is openably and closably attached to cover the opening, and A waterproof structure for a housing, characterized in that, when the rib ends are opposed to each other, the gap formed between the rib ends and the groove space of the groove-shaped sealing member are continuous vertically and horizontally. 2. The waterproof structure for a casing according to claim 1, wherein the gap formed between the rib ends is formed to be narrower than the width of the groove space of the groove-shaped seal member. 3. The ribs of the one groove-shaped seal member are alternately provided with different heights, and a plurality of gaps are formed in a stepwise manner between the ribs of the other groove-shaped seal member facing each other. The waterproof structure for a housing according to claim 1, wherein the waterproof structure is formed.