JPH0611563Y2 - Waterproof structure of case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a waterproof structure for a housing used outdoors.

(Prior Art) Conventionally, a panel is attached to the upper part and a case covered with a lid is provided with various waterproof structures for outdoor use. FIG. 4 is an external perspective view showing a configuration example of a conventional device of this type, in which a lid 2 is fixed to a housing 1 by a thumbscrew 3.

FIG. 5 is a partial cross-sectional view showing an example of an internal structure for fixing the lid body 2 to the housing 1 with the thumbscrew 3. In the figure,
4 is a waterproof packing between the lid body 2 and the thumbscrew 3, and 5 is a groove formed on the entire circumference of the lower end of the inner side surface of the lid body 2. In this groove 5, a ring-shaped packing 6 is inserted, The lower end has a seal portion 6a having a sharp cross section. A panel 7 is attached to the upper mounting frame 1a of the housing 1,
The sealing surface 1b, which is the upper surface of the mounting frame 1a, is the packing 6
It comes into close contact with the seal portion 6a.

Since it is configured as described above, the insertion hole 2a of the lid 2 is formed.
By inserting the thumbscrew 3 that has passed through the packing 4 into and screwing it into the screw seat 8 provided on the lower surface of the panel mounting frame 1a of the housing 1, the upper and lower surfaces of the packing 4 are covered by the lid sealing surface 2
b and the thumbscrew sealing surface 3a are in close contact with each other, and at the same time, the sealing portion 6a of the packing 6 is in close contact with the sealing surface 1b of the housing 1, thus forming a waterproof housing.

FIG. 6 is a schematic view showing the joining of the packing 6, in which both ends 6b and 6c of the packing 6 are obliquely cut and bonded at the bonding surface 6d to form a ring shape. FIG. 7 is a side cross-sectional view showing another example of the conventional structure, and the same parts as those in FIG. 5 are designated by the same reference numerals. 9b is formed, and the packing 10 is adhered to the lower surface of the seal portion 9b. Therefore, when the thumbscrew 3 is inserted from the upper part of the lid 2 and screwed into the screw seat 8 of the housing 1, the packing 10 is brought into close contact with the sealing surface 1b of the housing 1, and at the same time, the packing 4 is pressed to close the lid. Since the through hole 9c of 9 is sealed, the waterproof structure of the housing 1 can be obtained. Both ends of the packing are the 6th as in the previous embodiment.
It is endlessly formed by the adhesive structure shown.

(Problems to be solved by the invention) However, in the waterproof casing having the above configuration, in the case of FIG. 5, when the packing 6 is inserted into the groove 5, the length of the packing 6 is long because it is inserted in a stretched manner. It is difficult to determine the height, and there is a dislike that the height is not uniform over the entire length.

Also, in the case of FIG. 7, the finish of the adhesive surface varies depending on the operator, and a gap is created due to the adhesive, and the painted surface may change color depending on the type of packing. Since the adhesive strength is weak when used, a holding metal fitting is required to prevent it from coming off. Further, since packing is applied to the knob screw insertion hole 9c portion of the lid body 9 and the lower end portion of the side wall of the lid body, there are various problems that the tightening force by the thumb screw 3 must be applied more than necessary. Furthermore,
Due to deterioration of the packing rubber, the adhesive adheres to the lid and the like at the time of replacement and there is also the complexity of removing the adhesive.

This invention eliminates the problems of the above-mentioned prior art, such as packing gap due to adhesion, weak packing tightening force, and complexity of peeling adhesive when replacing the packing, resulting in an excellent waterproof effect. The present invention aims to provide a waterproof structure for a housing.

(Means for Solving the Problem) In order to solve the above problems, the present invention provides a waterproof housing, a housing in which a screw post having a stepped portion at a base is erected on a panel mounting frame, and the screw post. A lid-like seal that has a packing that is inserted into the step portion of the panel to seal the panel mounting frame, a draining plate on the entire circumference of the inner surface, and a side wall that is located inside the screw post and whose end surface is in contact with the packing. The lid is fixed to the lower surface of the plate, and the lid is screwed to the screw post of the housing.

(Operation) According to the present invention, since the waterproof casing is configured as described above, specifically, the configuration of FIGS. 1 to 3 showing the embodiment of the present invention, the following operation is achieved. That is, the draining portion 14 a of the draining plate 14 fixed to the lid 12 and the sealing surface 15 of the sealing plate 15
Since the height of a is adjusted to the range of the effective tightening margin of the packing 17, when the thumbscrew 13 is tightened, the lid 12 is properly tightened to the housing 11, and the sealing surface 15a of the seal plate 15 is
Effectively presses the packing 17, and the packing 17 inserted in the step portion 16a of the screw post 16 causes the housing 1
The one sealing surface 11b is effectively sealed. Therefore, even if there is water from the water draining portion 14a, the device is highly waterproof because it is sealed by the seal plate 15 and the packing 17. Therefore, the lid 1
No packing is required for water from the second thumbscrew insertion hole 12a, and the packing 17 does not need to be bonded.

Therefore, the above problems can be eliminated.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an external perspective view showing an embodiment of the present invention, in which 11 is a housing, 12 is a lid, and 13 is a thumbscrew. Is tightened in. FIG. 3 is an enlarged view of an essential part showing one corner of FIG.
Reference numeral 14 is a drain plate, 15 is a metal seal plate, and 15a is a corner seal portion for avoiding the thumbscrew 13.

FIG. 1 is an enlarged sectional view of an essential part showing a part of a main part of the waterproof structure according to the present invention. The same parts as those in FIGS. A screw post that is erected on the sealing surface 11b has a step portion 16a at the base and a screw hole is provided up to the middle, and the packing 17 is inserted and inserted through an insertion hole 17a having a smaller diameter than the step portion diameter. Surface 1
It is mounted on 1b.

That is, this embodiment is configured as follows. The screw post 1 is attached to the mounting frame 11a of the panel 18 on the top of the housing 11.
6 is erected, and the packing 17 is inserted into the stepped portion 16a at the base thereof through the insertion hole 17a.
It is placed on the upper sealing surface 11b. Incidentally, 11c is a mounting angle of the panel 18 connected to the mounting frame 11a. The drain 12 is provided on the lid 12 along the entire inner circumference thereof.
4 are connected to each other and have a draining portion 14a at the lower end thereof.
A lid-like seal plate 15 having corner seal portions 15b (see FIG. 3) at the four corners is provided on the lower surface of the lid body 12 so as to avoid the fixing thumbscrew 13 of the lid body 12 and the screw post 16 screwed to the fixing thumbscrew 13. It is fixed concentrically and has a sealing surface 15b at the lower end of the side wall 15a, which is in contact with the upper surface of the packing 17. In this case, the thickness of the packing 17 is equal to the height of the step portion 16a of the screw post 16, and the diameter of the insertion hole 17a is smaller than the step portion diameter of the screw post 16. In addition, the sealing surface 15 of the lid-like sealing plate 15 fixed to the lid body 12
The heights of b and the sealing surface 14a of the sealing surface 14 of the draining plate 14 are adjusted so as to be within the effective tightening margin of the packing. Further, the screw post 16 is the seal plate 15 of the lid 12.
Is disposed outside the corner portion 15a of the cover 12 and is concentric with the screw insertion hole 12a of the lid 12.

Therefore, when the lid body 12 is fastened to the lid body 11 with the thumbscrew 13, the sealing surface 15b of the seal plate 15 fixed to the lower surface of the lid body 12 makes proper contact with the packing 17,
Draining portion 14a of the draining plate 14 or the insertion hole 12a of the lid 12
Even if there is water from the inside, water is prevented from entering the panel 18.

Note that the thumbscrews 13 may be provided not only at the four corners of the lid body 12 but also at an intermediate portion between them, and may be provided at a place other than the four corners. However, it goes without saying that it must be provided between the drain plate and the seal plate.

(Effects of the Invention) As described in detail above, according to the present invention, since the adhesive is not used as a fixing means of the packing unlike the conventional case, the complexity of the adhesive peeling work is eliminated, and the packing can be replaced or replaced. Replacing due to breakage of the lid became easy, and it became possible to use a packing material that can be immediately peeled off even after adhesion. Furthermore, since a lid-shaped seal plate is provided on the lower surface of the lid and the screw post is located outside the side wall of the seal plate, it is necessary to seal between the side wall and the drain plate, and to put packing in the lid fixing screw part. Since it can be tightened tightly, it is possible to expect the effect of providing a better waterproof casing as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part showing an embodiment of the present invention, and FIG.
FIG. 3 is a perspective view showing the external appearance of a case to which the present invention is applied, and FIG.
FIG. 4 is a partially enlarged top view of one corner portion of the lid body in FIG. 4, FIG. 4 is an external perspective view of a conventional example, FIG. 5 is an enlarged side sectional view of one corner portion of the lid body, and FIG. FIG. 7 and FIG. 7 are enlarged sectional views of main parts of another conventional example. 11 ... Housing, 12 ... Lid, 13 ... Thumbscrew, 14 ... Drainer, 15 ... Seal plate, 15a ... Corner seal part, 16
… Screw posts, 17… Packings.

Claims (1)

[Scope of utility model registration request] 1. A housing in which a screw post having a stepped portion on a base is erected on a panel mounting frame, a packing which is inserted into the stepped portion of the screw post and seals the panel mounting frame, and an entire inner surface circumference. A lid-like seal plate having a drainage plate on the inside and a side wall located inside the screw post and having an end surface in contact with the packing is fixed to the lower surface, and is screwed to the screw post of the housing. A waterproof structure for the housing, which includes: