JPS583344Y2 - Locking device for electrical appliance containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved locking device for an electrical appliance container.

Containers for switches and relays consist of a container body and a lid body, and the main body of the electrical appliance is housed inside.In order to lock the lid body to the container body, conventionally, a step is provided on the side of the container body, and one side is A device was devised in which a locking leg protruding from the periphery of the lid engages with the stepped portion.

However, since the locking legs need to be engaged after once riding on the step, the locking legs are generally made of relatively soft synthetic resin.
For example, thermoplastic synthetic resins are often used, and these materials often have poor heat resistance, and locking devices with such a structure may warp due to temperature changes or aging, and the locking legs may warp or engage with the step. Sometimes it was incomplete.

The present invention has been devised in view of these conventional drawbacks and to improve them.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the locking device for electrical appliance containers of the present invention will be described below with reference to FIGS. 1 to 3.

1 is a vessel body, 2 is a recess, 3 is an inclined side edge, 4 is a step, 5 is a lid body, 6 is a locking leg, 7 is a side edge, and 8 is a notch.

The body 1 is an insulating body made of synthetic resin, for example, and houses an electric appliance body therein, and is provided with vertical grooves 2, 2 on both sides, and the side walls of the cavity 2 are connected to the inner side. It is marked as sloping side walls 3, 3 of the back floor which gets wider as you go towards the front.

Incidentally, the side walls 3', 3' may be provided with an inclination, or may have a dimension slightly larger than the maximum dimension of the T-shaped side edges 7, 7 of the locking leg 6, which will be described later, and have no inclination.

A stepped portion 4 is provided within the recess 2 and is inclined and raised in the direction in which the locking leg 6 is inserted.

As shown in FIG. 3, the 10,000-piece lid body 5 has a plurality of locking legs 6, 6 on its periphery, and is formed by plastic molding of synthetic resin such as thermoplastic, and has flexibility. have.

The tip of the locking leg 6 extends into a T-shape, and the side edge 7
, 7 are provided with slopes that fit into the sloped side walls 3.degree. 3, and a notch 8 provided in the middle of the slopes allows the distance between the both side edges 7, 7 to be reduced.

Therefore, in order to lock the lid 5 to the container body 1, align the locking leg 6 with the recess 2 of the container body 1, and push the locking leg 6 along the slope of the stepped portion 4. The slope makes the depression shallower, so the sloped sidewall 3'.

3' is small compared to the dimension between both sides of the T-shaped tip of the locking leg 6, so when the T-shaped tip gets over the step 4, the original dimension is restored due to the flexible restoring force of the tip notch. Both sides of the slanted edges γ tend to widen.

7 advances toward the back along the inclined surfaces of the inclined side walls 3, 3, and is fitted as shown in FIG.

Then, the shoulder portion of the side edge 7°7 is locked to the stepped portion 4.

If the side wall 3' is not sloped, the locking leg 6 will continue along the stepped portion 4 without shrinking, and even if the T-shaped shoulder reaches the apex of the stepped portion 4, the T-shaped portion will still remain. does not fall into the inclined side wall 3.3, so when both ignition legs 6.6 are squeezed with, for example, fingers, the notch 8 portion bends and the both side edges 7, 7 slides in.

Therefore, after fitting the container body 1 and the lid body 5, even if the locking legs 6, 6 try to warp outward due to aging or temperature changes, the inclined side edges 3, 3 and the side edges 7°7 Since they are fitted at a reverse slope, they are prevented from warping, and the stepped portions 4, 4 prevent the locking legs 6 from coming off.
This is prevented by engagement with

As explained above, according to the locking device for an electrical appliance container of the present invention, a vertically grooved depression is provided on the side of the container housing the electrical appliance main body, and the side wall of the depression is formed as an inclined side wall of the back floor. A step portion is formed in the recess that is inclined and raised in the direction in which the lid is attached, and a locking leg having a T-shaped tip that protrudes from the periphery of the lid attached to the container body toward the inside of the recess is formed in the recess. The locking leg is configured such that both side edges of the locking leg are sloped sidewalls that fit into the sloped sidewalls, and a notch is formed between both side edges of the locking leg so that the space between the both side edges can be reduced. When the locking leg 7 is engaged with the stepped portion 3, the notch 8 reduces the distance between the side edges 7, 7, making the engagement easier.
Once engaged, the inclined side wall 3.3 and both side edges 7 of the locking leg 6
, 7 are provided with slopes along each other, so that the locking is reliable and is effective as a locking device for an electrical appliance container.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the locking device for an electrical appliance container of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a partial sectional view at the entry-A position in FIG. 1, and FIG. is an exploded perspective view. 1... vessel body, 2... hollow, 3...
...Slanted side edge, 4...Step, 5...
Lid body, 6... Locking leg, 7... Side edge, 8
...notch.

Claims (1)

[Scope of utility model registration request] A vertically grooved recess is provided on the side of the container housing the electric appliance main body, the side wall of the recess is a sloped side wall of the back floor, a stepped part is formed in the recess that is inclined and raised in the direction in which the lid is attached, and A locking leg with a T-shaped tip that protrudes from the periphery of a lid attached to the vessel into the recess is locked to the stepped portion, and both side edges of the locking leg are fitted to the inclined side wall. A locking device for an electrical appliance container, characterized in that a locking leg has an inclined side wall and a notch formed between both side edges of a locking leg so that the space between both sides can be reduced.