JP2585800Y2 - Waterproof structure of housing - 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 structure for a housing. INDUSTRIAL APPLICATION This invention is useful for housing | casings of electronic devices etc. which require waterproofing performance.

[0002]

2. Description of the Related Art A housing of a transmitter or the like of a remote control device has a storage space in which, for example, a battery as an operation power supply is stored or switches are disposed. Usually, an opening communicating with the storage space is closed by a lid member.
FIG. 3 shows a lid member 100 having a waterproof structure for closing the opening, and FIG. 4 is a sectional view taken along the line AA in FIG. A substantially rectangular groove 101 surrounding the opening of the housing is formed on the inner surface side (storage space side) of the lid member 100, and an O-ring 102 is provided inside the groove 101.

The width of the groove 101 is larger than the outer diameter of the O-ring 102, but the depth is slightly smaller, and the top of the O-ring 102 projects from the groove 101. At the four corners of the groove 101, projections 103 protruding inside the groove 101 are formed.
The groove width at this portion is smaller than the outer diameter of the O-ring 102. Therefore, the O-ring 102 is held at the four corners of the groove 101.

[0004]

SUMMARY OF THE INVENTION A cover member 10 for the housing.
0, the O-ring 102 is
There is a problem that it is only held by only the four protrusions 103 formed in 1 and is easily dropped from the lid member 100. A structure in which the width of the entire groove is smaller than the outer diameter of the O-ring and the O-ring is press-fitted into the groove may be considered, but a satisfactory fitting state cannot be obtained due to the tolerance of the lid member and the O-ring. Was.

An object of the present invention is to provide a waterproof structure for a housing in which a sealing member such as an O-ring is difficult to fall off from a lid member.

[0006]

Waterproof structure according to claim 1 the housing Means for Solving the Problems], in the waterproof structure of the housing having a lid member for closing the main body and opening in the body having an opening, sealing
A member and a holding portion are formed along the outer peripheral edge of the inner surface,
A first lid member having an inner surface serving as a holding surface of a sealing member, and an inclination holding the sealing member between the holding surface and the first lid member;
Having a sloping pressing surface and holding the sealing member therebetween
When attached to the inside of the part, the tip of the pressing surface and the holding
The distance between the surfaces is smaller than the outer diameter of the sealing member.
A second lid member that is configured to, the first to the first lid
And a screw for attaching and integrating the second lid .

[0007]

The sealing member is pressed against the pressing surface of the second lid member, pressed against the holding surface of the first lid member, and is reliably held between the two lid members.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. The present embodiment relates to a housing 1 having a waterproof structure used for a transmitter of a remote control device. The housing 1 includes a battery storage unit 2.
A main body 4 provided with an opening 3 communicating with the main body, and a lid body 5 for closing the opening 3 of the main body 4.

As shown in FIG. 1, a step 6 is formed around the opening 3 of the main body 4. A groove-shaped recess 7 is provided on one edge of the opening 3, and a set screw can be screwed into the vicinity of the other edge on the opposite side.

The lid 5 has one edge portion formed by the groove-shaped recess 7.
In the state inserted into the opening 3, it contacts the step 6 of the opening 3 and
Is closed. The fixing portion 8 provided on the other edge of the lid 5 is fixed to the main body 4 by a set screw 9.

As shown in FIG. 2, the lid 5 has three lid members. The first lid member 11 is made of resin and forms the outer surface side of the lid 5. A protruding edge 14 is formed on one side of the first lid member 11. This protruding edge portion 14 is
When the opening 3 is closed by the lid 5, it is inserted into the groove-shaped recess 7 of the main body 4. The first lid member 1 on the opposite side of the protruding edge portion 14
On the other side of 1, a fixing portion 8 fixed to the main body 4 by a set screw 9 is formed.

A projecting wall 15 is formed continuously on the inner surface of the first lid member 11 along the outer peripheral edge thereof. The protruding wall 15 is a holding portion for holding the sealing member, and the inner surface of the protruding wall 15 serves as a holding surface 16 of the sealing member to which the sealing member is pressed. A screw hole 17 is formed through the first lid member 11.

A third lid member 13 made of metal is provided inside the protruding wall 15 of the first lid member 11. The first lid member 11 and a second lid member 12 described later are both molded products of resin, and the third lid member 13 is provided to reinforce them. The third lid member 13 is formed with a larger-diameter assembly hole 18 at a position corresponding to the screw hole 17 of the first lid member 11.

On the third lid member 13, a second lid member 12 is provided. The second lid member 12 is made of resin and forms an inner surface side of the lid 5. Third lid member 13
The upper surface of the second lid member 12 placed on the
Substantially coincides with the upper surface of the protruding wall 15 of the cover member 11.

In the upper half portion of the outer peripheral end surface of the second lid member 12, a slanting downwardly inclined pressing surface 19 is formed so as to protrude. The pressing surface 19 and the projecting wall 15
An O-ring 20 as a sealing member is provided between the holding surface 16 and the upper surface of the third lid member 13. The pressing surface 19 is provided on the O
The ring 20 is pressed and held between the ring 20 and the holding surface 16.

The tip of the pressing surface 19 and the holding surface 16 of the projecting wall 15
Is smaller than the outer diameter of the O-ring 20.
Therefore, the O-ring 20 is connected to the first and second lid members 11, 1
It won't fall off between the two. Also, the pressing surface 19
The O-ring 20 held tightly between the and the holding surface 16 is deformed, and its top protrudes slightly upward from the gap.
Therefore, when the lid 5 of the present embodiment is attached to the main body 4 of the housing 1, the O-ring 20 reliably contacts the main body 4 side.

The second lid member 12 is formed with a cylindrical female screw portion 21. On the inner surface of the female thread portion 21,
A female screw into which a screw for assembling the first to third lid members integrally is formed.

A part of the female screw portion 21 projects from the lower surface of the second lid member 12. The protruding portion 22 is connected to the third
Is inserted into an assembling hole 18 provided in the cover member 13 of the first embodiment. A groove 23 is formed around the protrusion 22 on the lower surface of the second lid member 12. The groove 23 is provided with a seal member 24 for waterproofing around a screw 25 for assembling the lid members 11, 12, 13.

The first to third lid members 11, 12, 1
3 and the O-ring 20 are combined as described above and the first
The screw 25 inserted from the screw hole 17 of the lid member 11 is screwed into the female thread portion 21 of the second lid member 12 to be integrated.

According to one embodiment described above, the projecting wall 15
The O-ring 20 can be securely held by the corners of the opening and the oblique pressing surface 19, and the O-ring 20 does not fall off when the lid 5 is opened and closed. Further, since the cover 5 is reinforced by the third cover member 13 made of metal, the cover 5 is hardly deformed, and the reliability of waterproofing is further improved.

In the embodiment described above, the cover 5
Is composed of three lid members, but the third lid member 1
Even if 3 is omitted, reliable holding of the O-ring 20 is achieved.

[0022]

According to the waterproof structure of the housing according to the present invention,
Since the seal member is configured to be securely held between the first and second lid members combined with each other,
The sealing member does not fall off when the lid is opened and closed, and the effect of significantly improving the functionality of the housing applied to the electronic device or the like can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a housing in a first embodiment.

FIG. 2 is an enlarged sectional view of a lid according to the first embodiment.

FIG. 3 is a plan view of a lid in a conventional housing.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 housing 3 opening 4 main body 5 lid 11 first lid 12 second lid 16 holding surface 19 pressing surface 20 O-ring as seal member

Claims (1)

(57) [Scope of request for utility model registration] 1. A waterproof structure for a housing including a main body having an opening and a lid closing the opening of the main body, wherein a sealing member and a holding portion are formed along an outer peripheral edge of an inner surface of the housing .
A first cover member which interior surface is the holding surface of the sealing member has a pressing surface inclined to hold said seal member between the holding surface, among the holding portions across the sealing member
Side, the distance between the tip of the pressing surface and the holding surface
The separation is configured to be smaller than the outer diameter of the seal member.
A second lid member that is, to integrate the second attach the lid to the first lid
Waterproof structure for housing and having a ball screw, a.