JPH06153334A - Door apparatus - Google Patents

Abstract

PURPOSE:To provide a door apparatus whereby the operation for opening a door is made easy and the door is made hard to fall in the state wherein the door must be kept opened. CONSTITUTION:A door apparatus including a case 1 having an opening on the vertical surface thereof, a door 2 which is mounted in an openable way on the upper end part of the opening via a horizontal shaft 16 and has a door fastening protrusion 15 for holding the opened state of the door, and a door fastening spring 3 formed out of a nearly U-shaped plate spring whose one piece 36 is fixed on the case 1 and on whose other piece 37 a protruding part 35 climbed by the door fastening protrusion 15 when opening the door is formed in a bent way.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device such as a distribution board.

[0002]

2. Description of the Related Art A door device applied to a conventional distribution board closes the opening of a lower box with an inner lid, and installs the door on the upper end side of the inner lid corresponding to the upper end side of the opening via a horizontal shaft. It is installed. In this case, in order to maintain the open state of the door, as shown in FIG. 10, a locking protrusion 201 is provided on the door 200, and the pressing plate 203 and the pressing plate 203 are engaged with the inner lid 202 so as to face the locking protrusion 201. A coil spring 204 that presses against the stop projection 201 is provided, and the door 20
The locking projection 201 pushes the pressing plate 203 against the coil spring 204 between the open state and the closed state of 0.
Was configured to get over. As a result, even if the door 200 is opened in the open state shown by the imaginary line and the door 200 rotates in the closing direction by its own weight, the locking projection 201 abuts the pressing plate 203, so that the door 200 can be held in the open state. it can.

[0003]

However, in this door device, when the spring force of the coil spring 204 is increased, the opening / closing operation becomes difficult, and conversely, when the spring force is weakened, the door 200 tends to fall into the closed state. was there. Therefore, it is an object of the present invention to provide a door device that is easy to open and is hard to fall down in the open state.

[0004]

A door device according to the present invention is a box body having an opening in a vertical surface, and a member for holding a door open state which is attached to an upper end portion of the opening via a horizontal shaft so as to be openable and closable. A locking spring formed by a door having a stop projection and a substantially U-shaped leaf spring, one piece of which is fixed to the box body, and a projection over which the locking projection rides when the door is opened is bent and formed in the other piece. It is equipped with and.

[0005]

According to the structure of the present invention, when the door is opened, the locking projection moves from the side of the U-shaped bent portion of the locking spring to the tip side of the other piece having the projection and gets over the projection. Since the other piece having the protrusion can be easily elastically deformed to the one side, the door opening operation can be easily performed. In the opened door state where the locking projection has passed over the projection, the locking projection is locked to the projection due to the weight of the door, but the locking projection is pushed from the tip side of the other piece having the projection to the U-shaped bent side. When trying to get over the protrusion, a compressive force is applied from the protrusion to bend the U-shaped bent portion, so that the resistance force increases, and thus the locking protrusion is less likely to get over the protrusion. Therefore, the holding strength in the open state is increased, and the door does not easily fall down. Therefore, the door is easy to open, and is difficult to fall down in the open state.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. That is, the door device of this distribution board is a box 1
And a door 2 and a locking spring 3. The box 1 has an opening for opening and closing the door 2 on a vertical surface, but in the embodiment, the opening 5 of the lower box 4 of FIG. 5 is closed by the inner lid 6 as shown in FIG. A door 2 is provided. As shown in FIG. 5 and FIG. 9, the lower box 4 has an inner bottom stand 7 mounted therein by screws 15, and a main breaker 8 and a branch breaker 9 mounted on the inner bottom stand 7. Reference numeral 10 is an energization display block of the branch breaker 9, 11
Is a wire passage portion, 12 is a detachable wiring lid having the wire passage portion 11, 13 is a conduit tube, 14 is its nut, and 30 is an electric wire.

The inner lid 6 is attached to the attachment holes 18 and the locking tongues 17 provided on both sides of the insole base 7 by the attachments 55. As shown in FIG. 8, the mounting tool 55 has a mounting hole 1
8, a recess 70 is formed in the inner lid 6, and a hole 71 corresponding to the mounting hole 18 is formed in the bottom of the recess 70.
A locking hole 72 for locking the locking tongue 17 is formed, and the inner lid 6 is temporarily fixed by locking the locking tongue 17 in the locking hole 72, and a hook hole 76 is formed in the side wall of the recess 70. is doing. The attachment 55 is a horizontal shaft 73 installed in the recess 70, a knob 74 that extends from the horizontal shaft 73 and is in the closed position of the recess 70 when the recess 70 is attached, and a knob 74 that extends from the back surface of the knob 74. In the mounted state, the tip is locked to the back surface of the insole 7 through the mounting hole 18, and the knob 74 is opened as shown by an imaginary line to lock the locking piece 75 located outside the mounting hole 18.
And a hooking piece 77 that extends from the back surface of the knob 74 and hooks in the hooking hole 76 when the knob 74 is closed, and a knob 74.
And a stopper 78 that extends from the back surface of the stopper and contacts the bottom surface of the recess 70 in the closed state. Further, the inner lid 6 has a hole 20 for exposing the main breaker 8, the branch breaker 9 and the energization display block 10, as shown in FIG.

The door 2 has a horizontal shaft 1 at the upper end of the opening of the box 1.
Although it has a locking projection 15 for holding the door open, the door 2 of the embodiment is horizontally attached to the upper end side of the inner door 6 to close the hole 20 of the inner lid 6. A shaft 16 is provided, and a peep window 21 is formed in the center of the door 2 so that the energization display block 10 and the handle of the master breaker 8 can be seen. That is, as shown in FIG. 7, a horizontal bearing 23 facing the side wall 22 is provided on the back surface of the upper end of the door 2, and horizontal shaft holes 24 and 25 are formed in the horizontal bearing 23 and the side wall 22. A spring bearing / horizontal bearing 26 is provided on the side opposite to the side wall 22 of the horizontal bearing 24, and a concave portion 33 is formed on the inner surface side so that the rear surface side projects on the upper end portion of the inner lid 6 (FIG. 1). Horizontal bearing 27 is provided with bearing 27
The long hole 30 is formed in the side wall 29 so as to face the hole 28. The horizontal shaft 16 has a spring receiving collar 31 formed at an intermediate portion thereof. A spring bearing collar 31 is applied to the horizontal bearing 24, a coil spring 32 is passed through the horizontal shaft 16, and one end thereof is locked to the collar 31 and the other end is locked to the spring bearing / horizontal bearing 26, and the horizontal force is exerted by the coil spring 32. 16 is passed through the horizontal shaft hole 24 of the horizontal bearing 24 and the horizontal shaft hole 25 of the side wall 22. The horizontal shaft 16 is moved so as to compress the coil spring 32, the horizontal bearing 27 of the inner lid 6 is positioned between the horizontal bearing 23 and the side wall 22, and the horizontal shaft 16 is passed through the horizontal shaft hole 28. 2 is attached to the inner lid 6.

Further, as shown in FIG. 1, the locking projection 15 of the embodiment faces the concave portion 33 at the outer edge portion of the door 2 slightly apart from the horizontal axis center a on both sides of the upper end portion of the door 2 in the radial direction, and It is formed so as to form an arc surface in the rotation direction, and the rotation range associated with opening and closing of the door 2 is within the recess 33. The locking spring 3 is formed of a substantially U-shaped leaf spring, and one piece 36 thereof is fixed to the box body 1 and a projection 35 over which the locking projection 15 rides when the door 2 is opened is bent and formed on the other piece 37. ing. 38 is a U-shaped bent portion, 39
Is the tip of the other piece 37. Further, in the embodiment, the mounting portion 41 is extended from the one piece 36 through the Z-shaped bent portion 40, and the mounting hole 42 is formed at the tip thereof. The one piece 36 is brought into contact with the inner surface of the recess 33 and the other piece 37 having the projection 35 is engaged with the locking projection 15.
The mounting portion 41 projects toward the rear surface through a hole 43 formed in the side surface of the recess 33 and is fixed to a screw hole 45 provided in the door 2 with a screw 44.

According to this embodiment, when the door 2 is opened, the locking projection 15 moves from the U-shaped bent portion 38 side of the locking spring 3 to the tip 39 side of the other piece 37 having the projection 35. Projecting part 3
5, the other piece 37 having the protrusion 35 can be easily elastically deformed to the side of the one piece 36, so that the door opening operation can be easily performed. In the opened state where the locking projection 15 has passed over the projection 35, the locking projection 15 is projected by the weight of the door 2.
5, the tip 39 of the other piece 37 having the projection 35
Side to the U-shaped bent portion 38 side, when the locking projection 15 tries to get over the projection 35, a compressive force is applied from the projection 35 to bend the U-shaped bent portion 38. Is increased, it is difficult for the locking projection 15 to get over the projection 35. Therefore, the holding strength in the open state is increased, and the door 2 is less likely to fall over. Therefore, the door 2 is easy to open, and is hard to fall down in the open state.

[0011]

According to the door device of the present invention, when the door is opened, the locking projection moves from the U-shaped bent portion side of the locking spring to the tip end side of the other piece having the protruding portion and gets over the protruding portion. Therefore, the other piece having the protrusion can be easily elastically deformed to the one side, so that the door opening operation can be easily performed. In the opened door state where the locking projection has passed over the projection, the locking projection is locked to the projection due to the weight of the door, but the locking projection is pushed from the tip side of the other piece having the projection to the U-shaped bent side. When trying to get over the protrusion
Since a compressive force is applied to bend the folded portion,
Since the resistance force increases, it becomes difficult for the locking projection to get over the projection. Therefore, the holding strength in the open state is increased, and the door does not easily fall down. Therefore, the door has an effect that it is easy to open the door and is hard to fall down in the opened state.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of an opened state of an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view in a closed state.

FIG. 3 is an external perspective view of a distribution board.

FIG. 4 is a perspective view showing a state in which a door is opened.

FIG. 5 is a perspective view with an inner lid removed.

FIG. 6 is a partial perspective view of a horizontal shaft portion.

FIG. 7 is an exploded perspective view thereof.

FIG. 8 is a cross-sectional view of a mounting portion of an inner lid.

FIG. 9 is a cross-sectional view of a distribution board embedded.

FIG. 10 is a partial sectional view of a conventional door device.

[Explanation of symbols]

 1 Box 2 Door 3 Locking Spring 15 Locking Protrusion 16 Horizontal Axis 35 Projection 36 One Piece 37 Other Piece

Claims (1)

[Claims] 1. A box body having an opening on a vertical surface, a door having a locking projection for holding the door open, which is attached to an upper end portion of the opening so as to be openable and closable via a horizontal shaft, and has a substantially U-shape. A door device comprising a leaf spring, one piece of which is fixed to the box body, and a protruding portion over which the locking projection rides when the door is opened is bent and formed in the other piece.