JPH11177251A - Drip-proof case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress infiltration of liquid after assembly, by providing a part contacting each case covering a control part with recess/protrusion structure or step-like structure, and providing a taper in assembly direction of each case for easy assembly. SOLUTION: A case 1 covers a control part 4, and the case 1 is engaged with a step-like structure 5 with a taper 6 provided in assembly direction of the case 1. The engagement part may be a recess/protrusion structure for similar effect. The surface of the case 1 is provided with a part through hole, the part through hole is provided with a knob which rotates for operation in surface direction of the case 1, and the case 1 and a circular engagement part of the knob for rotary operation are engaged with the step-like structure 5, with the taper 6 provided in rotation direction of the knob for rotary operation. A hole for hanging is provided at the case 1, on the side opposite to the surface for operating the knob for rotary operation, with a water-flow channel running between the part through hole and the hole for hanging provided while avoiding the control part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case for covering a control component such as a controller case.

[0002]

2. Description of the Related Art Conventionally, this type of drip-proof type case is disclosed in
The one shown in -28078 was common. As shown in FIGS. 4 and 5, the drip-proof case has a concave-convex structure 2 at a fitting portion of the case 1 to suppress intrusion of liquid from outside.

Further, a drain hole 3 through which a liquid flows out is provided on the entire lower surface.

[0004]

However, in such a conventional drip-proof case, it is difficult to assemble if the clearance of the fitting portion of the uneven structure or the step-like structure is small in manufacturing, and the fitting of the uneven structure or the step-like structure is difficult. If the clearance at the joint is large, there is a problem that intrusion of liquid from outside cannot be suppressed.

[0005] Furthermore, a drain hole for liquid intrusion is generally formed on the entire lower surface, and when a controller or the like is placed upside down, liquid may enter through the drain hole. Had the problem that

[0006]

According to the present invention, in order to solve the above-mentioned problems, in a case where a plurality of cases cover a control component, a portion where each case comes into contact has an uneven structure or a step-like structure. The taper is provided in the mounting direction.

According to the above invention, since the taper is provided,
The clearance at the time of assembling is large, the assembling is easy, and the clearance after assembling is small, so that invasion of liquid can be suppressed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a case where a case for covering a control component is divided into a plurality of parts, a portion where each case comes into contact has an uneven structure or a step-like structure, and a taper is provided in a mounting direction of each case. This is a drip-proof case.

Since the taper is provided, the clearance at the time of assembling is increased, the assembling is easy, the clearance after assembling is small, and the intrusion of liquid can be suppressed.

[0010] Further, a component through-hole is provided on the surface of the case that covers the control component, and a knob for rotating the surface of the case is provided in the component through-hole. Is a drip-proof case, characterized in that the knob has a concavo-convex structure or a step-like structure, and a taper is provided in the rotation direction of the knob to be rotated.

Further, a hanging hole is provided in a case on a side opposite to a surface on which the knob for rotating operation is operated, and a flowing water passage connecting the component through hole and the hanging hole is provided to avoid the control component. It is provided.

The liquid that has entered through the component through-hole passes through a flowing water passage avoiding the control component and flows out of the hanging hole to the outside. The water can flow out of the component through-hole through the flowing water passage avoiding the control component.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a main part of a drip-proof case according to Embodiment 1 of the present invention.

In the figure, reference numeral 1 denotes a case, and case 1
Cover the control component 4, each case 1 is fitted with a step-like structure 5, and a taper 6 is provided in the mounting direction of the case 1.

With this configuration, since the taper 6 is provided,
The clearance at the time of assembling is large, the assembling is easy, and the clearance after assembling is small, so that invasion of liquid can be suppressed.

Although the fitting portion has the step-like structure 5, the present invention can be similarly applied to the uneven structure 2.

(Embodiment 2) FIG. 2 is a front view of a drip-proof case according to Embodiment 2 of the present invention. FIG. 3 is a sectional view of a main part.

In the figure, 1 is a case, and case 1
Covers the control component 4, a component through-hole 7 is provided on the surface of the case 1, a knob 8 for rotating the case 1 toward the surface of the case 1 is provided, and a knob 8 for rotating the case 1. The taper 6 is provided in the rotation direction of the knob 8 which is fitted with the circular fitting portion in a stepped structure 5 and operated to rotate. A hanging hole 9 is provided in the case 1 on the side opposite to a surface on which the knob 8 for rotating operation is operated, and a flowing water passage connecting the component through hole 7 and the hanging hole 9 avoiding the control component 4. 10 are provided.

With this configuration, since the taper 6 is provided,
The clearance at the time of assembling is large, the assembling is easy, and the clearance after assembling is small, so that invasion of liquid can be suppressed.

The liquid that has entered through the component through-hole 7 is
The liquid that has flowed out of the hanging hole 9 through the flowing water passage 10 connected avoiding the control component 4 and that has entered the hanging hole 9 even if it is turned upside down can be removed from the flowing water connected avoiding the control component 4. It can flow out of the component through hole 7 to the outside through the passage 10.

Although the fitting portion has the step-like structure 5, the present invention can be similarly applied to the uneven structure 2.

[0023]

As described above, according to the present invention, since the stepped structure or the uneven structure of the fitting portion is provided with a taper, the clearance at the time of assembling becomes large, easy to assemble, the clearance after assembling is small, and Intrusion can be suppressed.

Also, a component through-hole and a hanging hole are provided on the upper and lower opposite surfaces, and a flowing water passage connecting between the component through-hole and the hanging hole is provided so as to avoid the control component. Flows through the hanging water passage avoiding the control components, flows out of the suspension hole to the outside, and even if it is turned upside down, the liquid entering from the suspension hole passes through the flowing water passage avoiding the control components. , Can flow out of the component through hole to the outside.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a drip-proof case according to a first embodiment of the present invention.

FIG. 2 is a front view of a drip-proof case according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a drip-proof case according to a second embodiment of the present invention.

FIG. 4 is a front view of a conventional drip-proof case.

FIG. 5 is a sectional view of a main part of a conventional drip-proof case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Concavo-convex structure 3 Drainage hole 4 Control part 5 Stair-like structure 6 Taper 7 Parts through-hole 8 Rotary knob 9 Hanging hole 10 Water passage

Claims (3)

[Claims] 1. A case in which a case for covering a control component is divided into a plurality of cases, wherein a portion in contact with each case has an uneven structure or a step-like structure, and a taper is provided in a mounting direction of each case. Features a drip-proof case. 2. A case in which a component through hole is provided on the surface of the case covering the control component, and a knob for rotating the surface of the case is provided in the component through hole. A drip-proof case, characterized in that the portion has an uneven structure or a step-like structure, and a taper is provided in a rotating direction of the knob for rotating. 3. A flowing water passage formed in a case on a side opposite to a surface on which the knob for rotating operation is operated, and connecting between the component through-hole and the hanging hole avoiding the control component. The drip-proof case according to claim 2, further comprising: