JPH0636639A - Electric appliances - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent loss of the insulating cover attached to the bottom of the switch box. [Structure] Shafts 5a provided at both ends of a rear portion of an insulating cover 5 are fitted into holes 3 on both lower sides of a switch box 2, and the insulating cover 5 is rotated by using the shaft portion 5a as a fulcrum.
The insulating cover 5 is closed by engaging the step portion 5c of the front surface 5e of the insulating cover 5 and the projection 4 of the switch box 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device mounted on a panel such as a control panel or a switchboard.

[0002]

2. Description of the Related Art FIGS. 7 and 8 are a partially cutaway front view of an electric appliance showing a conventional example and a partially cutaway side view of FIG.
In the figure, 11 is a base, which is attached to a door panel 13 by a nut 12 screwed with a threaded portion of the base 11. The base 11 is formed of a synthetic resin material having elasticity, and engaging legs 15 having holes 14 are integrally formed on both sides of the lower portion. A step portion 16 is formed below the hole 14. Reference numeral 17 denotes a push button, and the operation of the push button 17 causes the support 19 to move integrally downward. The support 19 is provided with a vertically long hole 20, and a movable contact 21 is supported below the hole 20. Also, this hole 20
A contact spring 22 is housed in the inside of, and presses the movable contact 21 downward. The movable contact 21 faces a fixed contact 23 mounted inside the switch box 18.

A protrusion 24 is provided on the upper end of the switch box 18,
The hole 14 of the engaging leg 15 on the side of the base 11 enters the hole 14 and engages with the step portion 16. And, in the lower part of the projection 24, a clearance such that a tool (not shown) such as a screwdriver as a jig for removing the projection 24 in a state where the projection 24 is engaged with the hole 14 of the engaging leg 15 is inserted.
A guide groove 26 forming 25 is provided. Engaging legs 27 having the same shape and size as the engaging legs 15 provided on both lower sides of the base 11 are provided on both sides of the lower part of the switch box 18. A hole 28 is formed in the engaging leg 27, and a step portion 29 is formed in the lower portion of the hole 28.

Reference numeral 30 denotes an insulating cover that engages with the engaging legs 27 of the switch box 18. The insulating cover 30 is a box-shaped insulating cover body 31 made of a transparent insulating material, and the insulating cover body.
A protrusion 32 that engages with the hole 28 of the engaging leg 27 formed in 31;
It is composed of a driver insertion hole 34 formed in an insulating cover body 31 for rotating the terminal screw 6 of the switch box 18, into which a driver can be inserted. The space B between the insulating cover body 31 and the lower end of the switch box 18 is formed so as not to contact even if the support body 19 moves.

In order to attach the insulating cover 30 which covers the terminal screws 6 to the switch box 18 in such a structure, the insulating cover 30 is attached from below the switch box 18.
Insert the protrusion 32 of the switch box 18 so that it engages with the engaging leg 27 of the switch box 18, and attach the engaging leg 27 of the switch box 18 to the protrusion 32 of the insulating cover 30.
Bend outwards with the insulation cover 30
It suffices to fit the protrusion 32 of. Further, in order to remove the insulating cover 30 from the switch box 18, insert the tip of a screwdriver or the like into the gap below the hooking leg 27 of the switch box 18 and bend the hooking leg 27 outward to insulate the insulating cover 30. The protrusion 32 of 30 and the engaging leg 27 of the switch box 18 may be disengaged, and the insulating cover 30 may be pulled downward.

[0006]

However, in such a conventional electric appliance, it is necessary to open the terminal portion covered by the insulating cover in order to perform wiring. At that time, the insulating cover is opened and closed. There is a drawback that the removed insulating cover is lost because it is completely removed from the container box.

The electric appliances may be closely arranged due to the space of a control panel or the like. However, when the electric appliances are closely arranged in the left-right direction of FIG. 7, the terminals protruding to the outside of the respective closely arranged electric appliances. Because parts come close to each other,
There is a drawback that the insulation distance between the electric appliances is insufficient. Then, the 1st objective of this invention is providing the electric equipment which prevents loss of an insulating cover in view of the above-mentioned point.

A second object of the present invention is to provide an electric appliance which insulates the electric appliance from each other when the electric appliances are closely arranged.

[0009]

In order to achieve the above-mentioned first object, an electric instrument according to a first aspect of the present invention is a base mounted on a panel such as a control panel or a switchboard and accommodating an operating section. An electric appliance comprising a base, a switch box detachably attached to the lower part of the base and projecting the terminal part to the outside, and an insulating cover attached to the lower part of the switch box and covering the terminal part. In the switch box, there are fitting parts on both sides of the lower part and engaging parts on the front part, and the insulating cover is fitted into the fitting parts of the switch box at both rear ends of the bottom surface part of the insulating cover. , Having a fitting portion for rotatably mounting an insulating cover to the switch box,
The front end of the front surface portion rising from the front end of the bottom surface portion has a hooking portion that hooks with the hooking portion of the front portion of the switch box to keep the insulating cover closed.

In order to achieve the second object, the electric appliance of the second embodiment of the present invention is a base mounted on a panel such as a control panel or a switchboard and accommodating an operating section, and this base. A switchgear box detachably attached to the lower part of the switchgear, the terminal part protruding to the outside, and an insulating cover attached to the lower part of the switchgear box to cover the terminal part. Has fitting parts on both sides of the lower part and engaging parts on the front part, and the insulating cover is fitted into the fitting parts of the switch box at both rear ends of the bottom part of the insulating cover, and is attached to the switch box. On the other hand, it has a fitting portion for rotatably mounting the insulating cover, and the front end of the front portion rising from the front end of the bottom portion is engaged with the front engaging portion of the switch box so that the insulating cover is closed. It has a retaining part to keep the insulation cover And having a wall portion for covering the terminal portion on the side surface of the.

[0011]

In the above-mentioned structure, the insulating cover for covering the terminals is formed by removing the engaging part of the insulating cover which engages with the front part of the switch box, and fitting the insulating cover on both sides of the lower part of the switch box. When the fitting parts at both ends of the rear part fitted into the part are rotated as fulcrums, the terminal part is opened. To close the insulation cover, rotate the insulation cover around the fitting parts at both ends of the insulation cover as fulcrums and engage the engagement part provided on the front part of the insulation cover with the engagement part on the front part of the switch box. Do it.

Also, the wall portion provided on the side surface of the insulating cover, which covers the terminal portion, is located between the terminal portions of the electric appliances when the electric appliances are closely arranged, and the insulation between the electric appliances is provided. I do.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are a side view of an electric appliance and a bottom view of FIG. 1 showing an embodiment of the present invention, and FIG. 3 is a perspective view of an insulating cover. 4 and 5 are a side view and a bottom view of FIG. 4 of the electric appliance with an insulating cover removed. The same members as those in the conventional example of FIG. 8 are designated by the same reference numerals and the description thereof will be omitted. In the figure, 1 is a protrusion on both sides of the lower part
A base having 1a, 2 is a switch box, and the switch box 2 has an engaging leg 2b having a hole 2a at an upper end thereof, and the hole of the engaging leg 2b is provided.
It is attached to the lower part of the base 1 by fitting the protrusion 2a into the protrusion 1a of the base 1. 3 is a hole provided on both sides of the lower part of the switch box 2, 4 is a protrusion provided between the terminal screws 6, 6 at the front part of the switch box 2, and the hole 3 is an insulating cover described later. 5, the shaft portion 5a of the insulating cover 5 is fitted into the fitting portion, and the projecting portion 4 serves as a hooking portion with which the step portion 5C of the insulating cover 5 is fitted.

Reference numeral 5 is a substantially L-shape attached to the lower portion of the switch box 2 so as to cover the terminal screw 6 protruding from the switch box 2 and the opening 9 (see FIG. 5) of the switch box 2. The insulating cover 5 includes a bottom surface portion 5d having inwardly projecting shaft portions 5a which are fitted in the hole portions 3 of the switch box 2 at both rear end portions, and which rises from the front end of the bottom surface portion 5d to the tip thereof. The switch box 2 comprises a front part 5e having a step 5c that engages with the protrusion 4 of the switch box 2, and the insulating cover 5 fits the shaft part 5a into the hole 3 of the switch box 2 to open the switch box 2 It is attached to the shaft and is opened and closed with the shaft 5a as a fulcrum.

Reference numeral 5b denotes the insulating cover 5 when the shaft portion 5a of the insulating cover 5 is attached to and removed from the hole 3 of the switch box 2.
Is a cutout portion for bending the shaft portion 5a of the terminal outward, and 7 is a hole portion which is provided at a position facing the head portion of the terminal screw 6 of the bottom surface portion 5d of the insulating cover 5 and is slightly smaller than the diameter of the head portion of the terminal screw 6. The hole 7 can be tightened by inserting the tip of a screwdriver or the like from below with the insulating cover 5 closed,
Further, the terminal screw 6 can be prevented from coming off due to loosening. 8 is a stepped portion of the insulating cover 5 formed on the bottom surface 5d of the insulating cover 5.
It is a driver insertion hole for removing the engagement between 5c and the protrusion 4 of the switch box 2.

In the above-mentioned structure, in order to open the insulating cover 5 for wiring, the bottom portion 5d of the insulating cover 5 is to be opened.
Insert the tip of a screwdriver or the like into the driver insertion hole 8 formed in the lower part and pry in the direction in which the step portion 5c of the insulating cover 5 is bent forward, so that the step portion 5c of the insulating cover 5 and the switch box 2 project. Remove the engagement with part 4. When the insulating cover 5 is rotated in the direction of the arrow in FIG. 1 with the shaft portion 5a of the insulating cover 5 as a fulcrum, the insulating cover 5 is opened. At this time, since the shaft portion 5a provided on the insulating cover 5 is fitted into the hole portion 3 of the switch box 2, the insulating cover 5 does not come off from the switch box 2. Further, after wiring, to close the insulating cover 5, the insulating cover 5 is rotated in a direction opposite to the arrow direction of FIG. 1 with the shaft portion 5a of the insulating cover 5 as a fulcrum, and the front surface portion of the insulating cover 5 is rotated. The step 5c provided at the tip of 5e may be engaged with the protrusion 4 of the switch box 2.

Further, depending on the specifications of the number of contacts, the switch box 2 may be stacked to increase the number of contacts. In that case, the shaft portion 5a of the insulating cover 5 attached to the lower part of the switch box 2 is attached. Is removed from the hole 3 of the switch box 2, and the shaft 5a of the insulating cover 5 may be fitted into the holes 3 on both sides of the rear side of the switch box 2 provided at the final stage. To remove the insulating cover 5 from the switch box 2, the shaft 5a of the insulating cover 5 fitted in the hole 3 of the switch box 2 is bent outward by the notch 5b,
The shaft portion 5a may be removed from the hole portion 3 of the switch box 2.

FIG. 6 is a front view of an electric appliance closely arranged to show another embodiment of the invention. In the figure, 10 is a wall portion that covers the terminal screw 6 provided on the side surface of the bottom surface portion 5d of the insulating cover 5, and the thin wall portion 10a is integrally formed on the wall portion 10 on the bottom surface portion 5d side of the insulating cover 5. There is. The wall portion 10 is a thin wall portion
It can be bent through 10a, and when the electric appliance is closely arranged, the wall portion 10 may be made perpendicular to the bottom surface portion 5d of the insulating cover 5 to cover the terminal portion 6. In this way, when the electric appliances are arranged in close contact with the wall portion 10 perpendicular to the bottom surface portion 5d, the wall portion 10 is located between the terminal portions 6 of the electric appliances, so that the electric appliances are insulated from each other. be able to. Further, for example, when wiring a terminal to the terminal screw 6 from the right side in FIG. 6, the wall portion 10 that covers the terminal portion 6 perpendicularly to the bottom surface portion 5d of the insulating cover 5 is connected to the bottom portion via the thin portion 10a. Bend it so that it is parallel to 5d.

[0019]

As described above, according to the invention described in claim 1, it is attached to a panel such as a control panel or a switchboard,
Also, a base for accommodating the operation part, a switch box detachably attached to the lower part of the base and projecting the terminal part to the outside, and an insulating cover attached to the lower part of the switch box and covering the terminal part. And a switch box having fitting parts on both sides of a lower part and engaging parts on a front part, and the insulating cover is provided on both sides of a rear part of a bottom surface part of the insulating cover. Has a fitting part that is fitted into the fitting part of the switch box and rotatably attaches the insulating cover to the switch box, and the front part of the switch box engages with the front end of the front part rising from the front end of the bottom part. Loss of the insulation cover because the terminal part can be opened for wiring without completely removing the insulation cover from the switch box by having the engagement part that keeps the insulation cover closed by engaging with the parts. Can be prevented Cormorants effect can be obtained.

According to the invention described in claim 3,
Since the wall portion that covers the terminal portion is provided on the side surface of the insulating cover, the wall portion is located between the terminal portions of the electric appliances when the electric appliances are closely arranged. The effect that insulation can be obtained is obtained.

[Brief description of drawings]

FIG. 1 is a side view of an electric appliance showing an embodiment of the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a perspective view of an insulating cover.

FIG. 4 is a side view of the electric device with an insulating cover removed.

5 is a bottom view of the switch box of FIG.

FIG. 6 is a front view of an electric appliance showing a different embodiment of the present invention.

FIG. 7 is a partially cutaway front view of an electric appliance showing a conventional example.

8 is a partially cutaway side view of FIG.

[Explanation of symbols]

 1 Base 2 Switch Box 5 Insulation Cover 5d Bottom 5e Front 6 Terminal Screw (Terminal) 8 Driver Insertion Hole 10 Wall 10a Thin Wall 13 Panel 17 Push Button (Operation)

Claims (4)

[Claims] 1. A base mounted on a panel such as a control panel and a switchboard and accommodating an operating section, and a switch box which is detachably attached to a lower portion of the base and has a terminal portion protruding to the outside. In an electric appliance which is attached to a lower portion of the switch box and has an insulating cover for covering the terminal portion, the switch box has fitting portions on both sides of the lower portion and has a hook portion at a front portion, The cover has fitting parts for fitting the insulating cover to the switch box rotatably at both ends of the rear part of the bottom part of the insulating cover, and has a front end of the bottom part. An electric appliance having a hooking part for hooking a hooking part on the front part of the switch box to keep the insulating cover closed at the tip of the front part rising from the above. 2. The electric appliance according to claim 1, wherein a driver insertion hole for removing the engagement between the engagement part of the insulation cover and the engagement part of the front part of the switch box is provided in the bottom surface part of the insulation cover. And electrical appliances. 3. A base mounted on a panel such as a control panel or a switchboard and accommodating an operating section, and a switch box which is detachably mounted on a lower portion of the base and has a terminal portion protruding to the outside. In an electric appliance which is attached to a lower portion of the switch box and has an insulating cover for covering the terminal portion, the switch box has fitting portions on both sides of the lower portion and has a hook portion at a front portion, The cover has fitting parts for fitting the insulating cover to the switch box rotatably at both ends of the rear part of the bottom part of the insulating cover, and has a front end of the bottom part. Has a hooking part at the front end of the front part of the switchgear that keeps the insulating cover closed by engaging with the hooking part at the front part of the switch box, and has a wall part on the side surface of the insulating cover to cover the terminal part. An electric appliance characterized by the above. 4. The electric appliance according to claim 3, wherein a thin wall portion is integrally formed on a bottom surface side of the insulating cover in a wall portion provided on a side surface of the insulating cover.