JPH0452360Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a current-carrying metal fitting for an electric lock, and in particular, the present invention relates to a power-carrying metal fitting for an electric lock. There is no fear of manipulation,
The present invention also relates to a current-carrying metal fitting with a simple structure and reliable operation.

[Conventional technology and issues]

Usually, electric locks are attached near the free edge of the door, which rotates around the axis of the door's hanging fittings, such as hinges, pivot hinges, or floor hinges. is led out from near the support side edge of the door to which it is attached, and is connected to the electric wire fixed to the door frame side through a current-carrying metal fitting configured to prevent damage to the electric wire due to door rotation. Ru.

Conventional power-carrying metal fittings, as described in, for example, Japanese Utility Model Publication No. 52-40301, are constructed in the shape of a so-called flag hinge, and the electric wire is connected to one of the slats,
In a normal hinge, it is led out to the door frame side through a hollow pipe portion corresponding to the pivot shaft and the other wing plate.

This current-carrying metal fitting does not expose the electric wire to the outside when the door is opened, and it looks good, but it is actually necessary to align the pivot axis of the other hinges supported by the door with the center axis of the hollow pipe. Because of this, there are restrictions on the types of hinges that can hold the door. Further, for the same reason, the gap between the door and the door frame, that is, the so-called dust size, is limited to a certain value, so there are various disadvantages such as the inability to attach the door to any door.

On the other hand, other conventional current-carrying metal fittings are
As described in Publication No. 84175, a flexible electric wire led out from the door to the indoor side is connected to the door frame side while forming a U-shaped loop near the support side edge of the door. It is configured.

However, in the case of a current-carrying fitting with such a structure, the electric wire forms a U-shaped loop and is exposed even though it is indoors, so there is a risk that the electric wire may be cut if a child hangs on it, for example. There is a disadvantage that it is easy to be attacked.

In addition, as yet another conventional current-carrying metal fitting, it is equipped with an electric contact part that opens and closes a circuit by utilizing the relative movement between the support side edge of the door and the door frame when the door is opened and closed. There are products on the market that connect the electric wire and the door frame side to each other.

However, this type of current-carrying metal fitting has the disadvantage that its reliability deteriorates after long-term use because poor contact occurs in the contact portions due to long-term use.

[Purpose of invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a current-carrying metal fitting that is free from the possibility of the electric wire being manipulated from the outside, has a simple structure, and can ensure reliable operation for a long period of time.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a hollow swinging lever that is disposed along the upper edge of the door between the door frame and the door frame when the door is closed, and a hollow swinging lever that is arranged at both ends of the swinging lever. a connecting body including a pair of first and second hollow conducting wire tubes connected to each other and protruding in mutually opposite directions; and a guide having a guide elongated hole that slidably engages with the second conducting wire tube. a plate, the guide plate is attached to either the upper edge of the door or the door frame opposite thereto, and the first conducting wire tube is rotatably supported on the other side near the rotation axis of the door,
It is characterized in that the electric wire from the door frame side is connected to the electric lock of the door through the connecting body.

〔Example〕

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

The current-carrying metal fitting according to the present invention has a connecting body and a guiding plate described below, and as shown in FIG. It is arranged between the door frame 4 and the door frame 4.

The connecting body 1 is constructed as shown in FIGS. 2 and 3, for example. That is,
In FIG. 2, the connecting body, which is designated as a whole by reference numeral 1, includes a flat, hollow swinging lever 5, and first and second conductive wires connected to both sides of the swinging lever 5 and protruding in opposite directions. It is equipped with cylinders 6 and 7. As shown in FIG. 3, the swing lever 5 in the illustrated embodiment is a shallow box-shaped body with one side open, and has a pair of lever caps 5a, 5a each having semicircular ends. , these are fitted in a nested manner as shown in FIG. 2, and a connecting claw 5b (see FIG. 3) integrally protruding from the opening edge of one lever cap 5a is connected to the other lever cap 5a. The pair of lever caps 5 are inserted into the corresponding receiving holes 5c opened at the bottom of the lever caps and then bent inward so that the bottom surface of the other lever cap is held by the plurality of connecting claws 5b, 5b.
a and 5a are integrally connected.

Then, as shown in FIG. 2, a first conductor tube 6 with a flange is fitted from the inside into the opening at the end of one lever cap 5a, and the flange is welded to the bottom surface of the lever cap 5 by, for example, projection welding. As a result, the first conducting wire tube 6 is connected to one end of the swing lever. At the same time, the inner hole of the first conducting wire tube 6 communicates with the inner space of the swing lever 5. A second conductor tube 7 is similarly connected to the other end of the other swing lever cap 5a. (See Figure 3). In this way, the first
and second conducting wire tubes 6 and 7 are connected, and these will protrude in mutually opposite directions.

On the other hand, as shown in FIG. 1, a guide plate 2 is attached to the upper edge of the door 3 near its rotation axis along its length. This guide plate 2 is the fourth
As shown in the figure, it is an elongated plate-like body with a guide elongated hole 2a opened in the center to slidably engage with the second conducting wire tube 7, and the door 3 is inserted through the guide elongated hole 2a.
The internal space of is connected to the external space.

On the other hand, as shown in FIGS. 1 and 4, for example, the first conducting wire tube 6 of the connecting body is rotatably fitted onto a mounting plate 8, and is connected to the rotation axis of the door 3 via the mounting plate 8. It is attached to the lower surface of the upper frame of the door frame 4 in the vicinity.
In FIG. 4, reference numeral 9 indicates a retaining ring, and this retaining ring 9 is fitted onto the outer circumference of the first conducting wire tube 6 as a stopper in the axial direction.

As shown in FIGS. 1 to 4, the electric wire 10 to the electric lock is introduced into the interior space of the door 3 from the door frame 4 side through the connector 1, and is connected to the coupler 1, for example.
1 (FIG. 1) to an electric lock 12.

[Effect]

In the current-carrying metal fitting according to an embodiment of the present invention configured as described above, when the door is closed as shown in FIGS. 1 and 5a, the swinging lever 5 constituting the connecting body 1 is
Keeping the angle parallel to the guide plate 2, the door 3
It is stored in the gap between the upper edge of the door frame 4 and the door frame 4. Further, the second conducting wire tube 7 is engaged with the guide elongated hole 2a at one end farthest from the rotation axis of the door 3.

When the door 3 is opened, the second conductor tube 7 connected to the upper edge of the door via the guide plate 2 follows the door.
The connecting body 1 rotates around the first conducting wire tube 6.
At this time, since the rotation axis of the door 3 and that of the connecting body 1 generally do not match, the guide plate has a long guide hole 2.
The relative position of the second conductor tube 7 with respect to a changes, so that the second conductor tube 7 slides along the guide elongated hole 2a and rotates by a slight angle.

As shown in FIG. 5, when the rotation axis (hinge) of the door 3 is in the door opening direction with respect to the first conductor tube 6,
The second conductor tube 7 moves along the guiding slot 2a of the guide plate in a direction approaching the support side edge of the door 3 (the mounting surface of the hinge blade plate), and the door 3 opens at right angles as shown in FIG. 5b. When the door opens 180° after the
As shown in the figure, the second conducting wire tube 7 moves to the other end of the guide elongated hole 2a.

In this process, the first and second conductor tubes 6,
The electric wire 10 near 7 is twisted by a slight angle (approximately 135° in FIG. 5), and
As is clear from the figure, the upper end of the electric wire 10 inside the door 3 moves to the right in FIG. When the door 3 closes, the above-described twist of the electric wire returns to its original state, and the upper end of the electric wire inside the door 3 returns to the position shown in the first figure.

In this manner, the current-carrying metal fitting according to the present invention absorbs the influence of the opening and closing of the door 3 on the electric wire 10 by mainly converting it into twisting of the electric wire.

[Other Examples]

Note that the present invention is not limited to the illustrated embodiment, and can be implemented with various modifications.

For example, in the illustrated embodiment, the guide plate 2 is attached to the upper edge of the door 3, but if there is a space on the door frame 4 side in which the electric wire 10 can move, the guide plate 2 can be attached to the door frame 4 side. The first conducting wire tube 6 may be rotatably supported on the upper edge of the door 3, preferably near the support side edge of the door.

Further, in the illustrated embodiment, the electric wire 10 that follows the second conductor tube 7 when the door 3 is opened and closed is extended in the vertical direction inside the door 3, and its upper end is swung horizontally. An electric wire is wound in a spiral shape, and this spirally wound electric wire 10 is stretched in a horizontal direction parallel to the guide plate 2 (not shown), so that the spiral expands and contracts as the second conductor tube 7 moves. You can.

〔effect〕

As is clear from the above description, the present invention is capable of rotatably supporting the first conducting wire tube of the connecting body near the rotation axis of the door, and allowing the second conducting wire tube to slide into the guide slot of the guide plate. Since the electric wire from the door frame side is connected to the electric lock of the door through the connector, the effect on the electric lock due to opening and closing of the door is absorbed in the form of a slight twist of the electric wire. I can do it. This torsion angle is the integral value of the torsion angle of each unit length part of the electric wire outside the conductor tube, so the twist of each part of the electric wire is minute, and there is no room for breakage due to fatigue of the electric wire. .

Furthermore, since the electric wire between the door and the door frame is housed within the connecting body, there is no possibility that the electric wire will be manipulated from the outside.

Furthermore, since the electric wire from the door frame is directly connected to the electric lock without an electric contact part, the structure is simple and the reliability of operation as a current-carrying metal fitting is dramatically improved.

In addition, since the rotation axis of the connecting body does not have to coincide with that of the door, various effects such as the ability to apply the present invention to any door are achieved.

[Brief explanation of the drawing]

Fig. 1 is a diagrammatic front view of a door equipped with a current-carrying metal fitting according to an embodiment of the present invention, Fig. 2 is a partially sectional side view of a connecting body, and Fig. 3 is a diagram for explaining an example of its structure. FIG. 4 is a perspective view showing an example of the configuration of the current-carrying metal fitting, and FIG. 5 is a diagrammatic plan view of the door support portion for explaining the operation of the current-carrying metal fitting. 1... Connection body, 2... Guidance plate, 2a... Guide slot, 3... Door, 4... Door frame, 5... Swinging lever,
6...First conductor tube, 7...Second conductor tube, 8...Mounting plate, 10...Electric wire, 12...Electric lock.

Claims (1)

[Claims for Utility Model Registration] 1. A hollow swinging lever disposed along the upper edge of the door between the door frame and the door frame when the door is closed, and connected to both ends of the swinging lever, respectively; A connecting body including a pair of first and second hollow conductor tubes protruding in mutually opposite directions, and a guide plate having a guide elongated hole that slidably engages with the second conductor tube. The guide plate is attached to either the upper edge of the door or the door frame opposite thereto, and the first conductor tube is rotatably supported on the other side near the rotation axis of the door, and the guide plate is attached to the door frame side. An energizing metal fitting characterized in that an electric wire from the above is connected to an electric lock of a door through the connecting body. 2 Claim 1 wherein the guide plate is attached to the upper edge of the door.
The current-carrying metal fittings listed in . 3. The current-carrying metal fitting according to claim 1, wherein the guide plate is attached to a door frame facing the upper edge of the door.