JP2747978B2 - Waterproof case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof case having a space for accommodating therein and having a stopper structure for waterproofly closing an opening of a case body with a cap (lid).

[0002]

2. Description of the Related Art The above-mentioned stopper structure is used for a hood portion of an electric connector, a lid portion of a lunch box, and the like.
FIG. 4 shows a conventional example of a waterproof case having such a stopping structure.
And FIG. 4 and 5, in this conventional waterproof case, a rubber packing 54 is provided on the lower surface of the cap 52, and the packing 54 is pressed between the opening of the case main body 51 and the cap 52, whereby the case is The opening of the main body 51 is closed by a cap 52 so as to be waterproof.

In order to press the opening of the case body 51 with the cap 52, hinge portions 532 are provided outside the cap 52, and one end sides of the pressing members 53 are rotatably attached to these hinge portions 532, respectively. At the same time, a locking projection 534 formed on the other end of the pressing member 53 is locked to flanges 512 formed on both sides of the opening of the case body 51.

[0004]

However, in the above-mentioned conventional waterproof case, the cap is pressed against the opening of the case body by the pressing member, and the packing is pressed between them. Along with the use, there is a problem that a stress is applied to the cap due to the repulsive force of the pressed packing, and warpage is likely to occur. This tendency is particularly strong when the cap is made of a relatively soft material. Then, at the place where the warpage occurs, the pressing force of the cap against the opening of the case main body is weakened, and the packing cannot be uniformly pressed, so that the waterproofness is reduced. That is, there is a drawback that water leaks from the location where the warpage has occurred.

[0005] An object of the present invention is to provide a waterproof case which can prevent the warpage of the cap, can uniformly press the packing between the opening of the case body and the cap, and can maintain reliable waterproofing for a long time. That is.

[0006]

According to the present invention, there is provided a case body having a storage portion therein, a cap which is placed on the opening of the case body via a packing, and a rotating member provided outside the cap. A waterproof member, which is pre-installed as possible and has a pressing member that engages with the case body so as to load the opening of the case body and the cap in a direction approaching each other, wherein the case body includes the opening. A case flange protruding outside of the portion, the cap includes a cap flange protruding outward corresponding to the case flange, and the pressing member includes a base having a cross-sectional shape extending vertically and the base. It has a U-shape consisting of two cantilever sides extending inward facing each other from both ends of the side, and is attached to the cap so as to be rotatable with play in the vertical direction. The two cantilever sides engage the case flange and the cap flange so as to sandwich the case flange and the cap flange, and the case flange and the cap flange The waterproof case is characterized in that the waterproof case extends in the extending direction. Note that the packing may be attached to a lower surface of the cap.

[0007]

[0008]

According to the present invention, the pressing member has a U-shaped cross section comprising a vertically extending base side and two cantilever sides extending inward opposite to each other from both ends of the base side. The side engages with the case flange and the cap flange so as to clamp the case flange and the cap flange, so as to squeeze the opening of the case body and the cap without depending on the rigidity of the cap. In addition, warping and lifting of the cap due to the repulsive force of the packing are reliably prevented. Also,
If the two cantilever sides are extended corresponding to the extending direction of the case flange portion and the cap flange portion, the stress based on the repulsive force of the packing is dispersed, and the bias is applied to a specific partial region. Therefore, warpage and lifting of the cap can be more effectively prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof case according to an embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are views for explaining a waterproof case according to the present embodiment. 1 to 3
In this waterproof case, the case body 1, a cap 2 for closing the opening 13 of the case body 1, a packing 4 sandwiched between the opening 13 and the cap 2,
A pressing member 3 whose one end is rotatably attached to the outside of the cap 2 by a hinge portion 32, and a packing 4 are provided. The case body 1 and the cap 2 have a square planar shape. Here, the case body 1,
The cap 2 and the pressing member 2 are made of, for example, a synthetic resin or the like. The packing 4 is made of an elastic material such as rubber.

A housing 11 is formed inside the case body 1. A case flange 12 is formed outside the opening 13 to protrude.

A packing 4 is attached to the lower surface of the outer periphery of the cap 2, and the cap 2 and the packing 4 are integrated as parts of a waterproof case. In the illustrated example, the packing 4 is pressed into and fixed to the continuous concave portion formed on the outer peripheral lower surface, and the lower end portion of the packing 4 is projected from the outer peripheral lower surface of the cap. A cap flange 21 is formed on the outside of the cap 2 so as to protrude.

The pressing member 3 has a U-shaped cross section including a base extending in the vertical direction in the figure and two cantilever sides 33 and 34 extending from both ends of the base.
The pressing member 3 is rotatably attached to the outside of the cap 2 above the cap flange 21 by a hinge 32 formed on the cap 2. The manner of attaching the hinge portion 32 and the pressing member 3 is the same as that of the conventional example shown in FIG.

However, in this embodiment, the pressing member 3
Is attached to the hinge portion 32 with play so as to be able to move slightly in the vertical direction in FIG. In order to have such play, in the example shown in FIGS.
As shown in FIG. 3, a floating fulcrum piece 32b having a circular cross section is loosely fitted in an oval groove 32a in the vertical direction formed in the hinge 32.
The floating fulcrum piece 32b is pressed to fix the pressing member 3.

In the waterproof case having the above-described structure, when the opening 13 of the case body 1 is closed by the cap 2 as shown in FIGS. The pressing member 3 can be engaged so as to sandwich the flange 12. That is,
The protruding portions 33a of the cantilever 33 and the protruding portions 34a of the cantilever 34 of the pressing member 3 are engaged from outside (up and down in the figure) of the cap flange 21 and the case flange 12 in the overlapped state. 2 and the opening 13 of the case body 1 are weighted in a direction approaching each other. In a state where the cap 2 and the case body 1 are fixed by the pressing member 3, the packing 4 between them is pressed.

Here, if the cantilever sides 33, 34 extend in the extending direction of the case flange portion 12 and the cap flange portion 21 (the direction perpendicular to the paper surface in the drawing), the pressing member 3, the weight applied to the case body 1 and the cap 2 is averaged, and the stress based on the repulsive force of the packing 4 is dispersed. Floating can be prevented more effectively.

FIG. 3 is a sectional view showing a state in which the pressing member 3 is being rotated to remove the cap 2 from the case body 1 in the waterproof case of the embodiment. Here, since the pressing member 3 is rotatably attached to the cap 2 with play in the vertical direction as described above,
When the pressing member 3 is rotated in the opening direction in FIG. 3 in this manner, one end of the floating fulcrum piece 32b has an oval groove 32a.
To move upward. As a result, the convex portion 34a formed on the cantilever side 34 of the pressing member 3 gets over the case flange portion 12, and the pressing member 3 can rotate in the opening direction about the floating support piece 32b.

Similarly, when the pressing member 3 is rotated in the closing direction from the state shown in FIG. 3, one end of the floating fulcrum piece 32b moves upward through the oblong groove 32a, and the cantilever 34 of the pressing member 3 is moved. Is pushed over the case flange 12, and the pressing member 3 rotates in the closing direction about the floating support piece 32b.

In this embodiment, of the four end sides of the cap 2 having a quadrangular planar shape, two of the caps 2 facing in the longitudinal direction are formed.
Although the pressing member 3 is attached only to the end sides, the pressing member 3 may be attached to all four end sides. In this case, it is a matter of course that the cap flange 21 is formed on all four end sides, and the case flange 12 is formed on all the four end sides also in the opening 13 of the case body 1. Further, in the above embodiment, one end of the pressing member 3 is rotatably attached to the cap 2 side, but the pressing member 3 may be attached to the case body 1 side.

When the waterproof case according to the present embodiment is applied to, for example, an electric connector, a connector (not shown) body is attached to the housing portion 11 of the case body 1, and
A waterproof cable clamp (not shown) may be attached to a surface other than the opening 13 of the case body 1 (for example, the bottom surface of the case body 1).

[0020]

The waterproof case according to the present invention has a case main body provided with a case flange protruding outside the opening thereof, a cap provided with a cap flange protruding outward corresponding to the case flange, and a pressing member. Has a U-shape having a base having a cross-sectional shape extending vertically and two cantilevers extending inward opposite to each other from both ends of the base, and the two cantilevers have a case flange and a cap. Engagement with the case flange and the cap flange so as to sandwich the flange allows the weight of the opening of the case body and the cap to approach each other without depending on the rigidity of the case, and the repulsive force of the packing. As a result, warpage and lifting of the cap due to the above can be reliably prevented, and reliable waterproofing can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a waterproof case according to an embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view showing a state in which an opening of a case main body of the waterproof case shown in FIG. 1 is closed by a cap.

3 is a partial longitudinal sectional view showing a state in which a cap is removed from an opening of a case main body of the waterproof case shown in FIG. 1;

FIG. 4 is a perspective view showing a waterproof case according to a conventional example.

5 is a vertical sectional view of the waterproof case shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 2 Cap 3 Pressing member 4 Packing 12 Case flange 13 Opening 21 Cap flange 32 Hinge 32a Oval groove 32b Floating fulcrum piece 33, 34 Cantilever

Claims (1)

(57) [Claims] 1. A case main body having a storage portion therein, a cap to be stacked on an opening of the case main body via a packing, and a rotatably mounted outside of the cap in advance. A waterproofing case having a pressing member that engages with the case body so as to load the opening of the case body and the cap in a direction approaching each other, wherein the case body protrudes outside the opening. The cap has a cap flange protruding outward in correspondence with the case flange, and the pressing member has a base having a cross-sectional shape extending vertically and a base extending from both ends of the base. It has a U-shape consisting of two cantilever sides extending inward opposite to each other, and
It is attached rotatably with play in the downward direction ,
The two pieces Jihen is configured to engage the casing flange portion and the cap flange portion so as to sandwich the case flange portion and the cap flange portion, the casing collar portion and the
A waterproof case extending in a direction in which a cap flange extends .