JPH0918167A - Drip-proof structure of rotary cover for housing - Google Patents

Abstract

PURPOSE: To obtain a rotary cover for housing having simple structure in which a packing has locking function and drip-proof function. CONSTITUTION: A rectangular recess 1A is made in the side face of a housing 1 and a rectangular window 1B is made in the recess 1A. An elastic packing 2 provided with a flange 2A having substantially quadrantal cross-section is fixed to the inner circumference of window 1B. A cover 3 is coupled rotatably to the lower part of recess 1A and a rectangular protrusion 3A is provided on the rear side with a hook 3B being formed at the upper end thereof. When the cover 3 is closed, the hook 3B is engaged with the upper part of packing 2 and drip-proof contact is brought about between the outer wall of protrusion 3A and the inner wall of cover 3 on the periphery thereof through the packing 2. Consequently, the cover 3 can be opened with a force stronger than the elasticity of upper packing 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drip-proof structure for a rotary lid of a housing. For example, a measuring instrument used outdoors often has a structure in which a panel to which a switch or a connector is attached is covered with a rotating lid in order to prevent water droplets from entering. Especially,
The present invention relates to a structure of a rotary lid of a housing that has both a lock function and a drip-proof function.

[0002]

2. Description of the Related Art Next, a conventional drip-proof structure for a rotary lid of a housing will be described with reference to FIG. In FIG. 2, 5 is a housing, 6 is a packing, 7 is a lid, and 8A and 8B are hooks.

In FIG. 2, a rectangular recess 5A is formed on the side surface of the housing 5.
And a window 5B is formed in the recess 5A. For example, a switch and a connector are arranged in the back of the window 5B, and the switch can be operated and the connector can be connected with the lid 7 opened.

The lid 7 is rotatably connected to the lower portion of the recess 5A. Hooks 8A and 8B project from both upper ends on the back side of the lid 7. Hemispherical protrusions 8C and 8D are formed on the hooks 8A and 8B in opposite shapes. On the other hand, a groove 5C into which the protrusions 8C and 8D fit is formed on the inner wall of the upper portion of the recess 5A. Window 5
A packing 6 is attached around B.

When the lid 7 is closed, the packing 6 and the back surface of the lid 7 come into close contact with each other to prevent water droplets from entering. Hook 8
Since A and 8B are formed of an elastic body, the lid 7 can be opened by rotating the lid 7 with a force stronger than the elastic force of the hooks 8A and 8B.

[0006]

FIG. 2 shows a hook 8A.
8B has a lock function and the packing 6 has a drip-proof function, so the structure is not simple. An object of the present invention is to provide a rotary lid having a simple structure in which the packing has both a lock function and a drip-proof function.

[0007]

In order to achieve this object, the present invention provides a rectangular recess 1A on a side surface of the recess 1
A case 1 forming a rectangular window 1B in A, a packing 2 attached to the inner circumference of the window 1B, and a lower part of the recess 1A are rotatably connected to each other, and a rectangular convex portion 3A is provided on the back surface of the convex portion 3A. A lid 3 provided with a hook 3B at the upper end is provided, and when the lid 3 is closed, the hook 3B is locked at the upper part of the packing 2, so that the outer wall of the convex portion 3A and the periphery of the outer wall and the inner wall of the lid 3 are the packing. It is characterized in that the lid 3 is brought into close contact with 2 and the lid 3 is opened by a force stronger than the elasticity of the upper portion of the packing 2.

Further, the packing 2 is an elastic body, and is characterized in that it has a brim 2A whose cross section is formed in an approximately quarter arc shape.

[0009]

According to the above construction, the lid 3 can be locked by engaging the hook 3B with the upper portion of the packing 2. Further, the outer wall of the convex portion 3A and the inner wall of the lid 3 around the outer wall are in close contact with the packing 2, so that the housing 1 can be drip-proof. Lid 3
Is rotated by a force stronger than the elastic force of the upper part of packing 2,
The lid 3 can be opened.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a drip-proof structure for a rotary lid of a housing according to the present invention will be described with reference to the embodiment of FIG. 1 in FIG. 1 is a housing, 2
Is a packing and 3 is a lid.

In FIG. 1, a rectangular recess 1A is formed on the side surface of the housing 1.
And a rectangular window 1B is formed in the recess 1A. Window 1B
For example, a switch and a connector are arranged at the back of the switch, and the switch can be operated and the connector can be connected with the lid 3 opened.

The lid 3 is rotatably connected to the lower portion of the recess 1A. A rectangular convex portion 3A is provided on the back surface of the lid 3, and a brim-shaped hook 3B projecting from the upper end of the convex portion 3A is provided. On the other hand, window 1B
A packing 2 having an elastic body and having a brim 2A formed in an arc shape in cross section is attached to the inner circumference of the packing 2.

As shown in FIG. 1, when the lid 3 is closed,
Since the hook 3B is locked on the top of the packing 2,
The outer wall of the convex portion 3A and the inner wall of the lid 3 around the outer wall are in close contact with the packing 2, so that water droplets can be prevented from entering.
Since the packing 2 is made of, for example, an elastic body such as rubber, the lid 3 can be opened by rotating the lid 3 with a force stronger than the elastic force of the collar 2A. When closing the lid 3,
The hook 3B pushes the arc of the collar 2A.

[0014]

According to the present invention, a rectangular concave portion is provided on the side surface,
A housing that forms a rectangular window in the recess, a packing that is attached to the inner circumference of the window, is rotatably connected at the bottom of the recess, and a rectangular projection is provided on the back surface, and a hook is provided at the upper end of the projection. When the lid is closed, the hook is locked to the upper portion of the packing, so that the inner wall of the lid around the outer wall of the convex portion and the outer wall is in close contact with the packing, Since the lid is opened by a force stronger than the elasticity of the upper portion of the packing, it is possible to provide a rotary lid having a simple structure in which the packing has both a lock function and a drip-proof function.

[Brief description of the drawings]

FIG. 1 is a structural diagram of a rotary lid of a housing according to an embodiment of the present invention.

FIG. 2 is a structural diagram of a rotary lid of a housing according to the related art.

[Explanation of symbols]

 1 Housing 1A Recess 1B Window 2 Packing 2A Collar 3 Lid 3A Convex 3B Hook

Claims (2)

[Claims] 1. A housing having a rectangular concave portion on a side surface thereof and a rectangular window formed in the concave portion, a packing attached to an inner circumference of the window, and a rotatably connected lower portion of the concave portion, and a rectangular shape on a back surface. Provided with a lid provided with a hook at the upper end of the convex portion, and when the lid is closed, the hook is locked to the upper part of the packing, so that the outer wall of the convex portion and the outer wall are surrounded. A drip-proof structure for a rotary lid of a housing, wherein an inner wall of the lid is in close contact with the packing, and the lid is opened by a force stronger than elasticity of an upper portion of the packing. 2. The packing according to claim 1, wherein the packing is an elastic body and has a brim formed in an arc shape in a cross section.