JP2010208728A - Drip-proof cover for elevator door switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drip-proof cover for a door switch, covering the door switch such that a water drop is not applied to the door switch of the elevator. <P>SOLUTION: The elevator door switch is provided with the drip-proof cover 20 totally covering a movable portion 12 and a stationary portion 14 of the door switch 10 over the stroke range of the movable portion 12 and mounted to a machine base of the door. Thereby, deposition of the water drop onto a contact portion of the door switch 10 can be surely prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drip-proof cover for an elevator door switch.

  Conventionally, an elevator car door and a landing door are each provided with a door switch, and when it is detected that the door is opened, the operation of the elevator is immediately stopped to ensure the safety of passengers.

Referring now to FIG. 11, the door switch mounting structure of the car door will be outlined. A hanger rail 2 extending horizontally in the left-right direction is fixed to the door machine base 1 fixed to the upper part of the car.
Hanger rollers 5 that roll on the hanger rail 2 are rotatably supported on the door hangers 4L and 4R that suspend the left and right open car door sides 3L and 3R, and the car doors 3L and 3R are respectively illustrated in the left and right directions. It is designed to open and close.

An endless drive belt 6 is wound around a drive pulley and a driven pulley (not shown) provided on the door machine base 1.
The right side car door 3R is connected to the upper part 6a of the drive belt 6 via the right hanger bracket 7, and the left part 6b is connected to the left side hanger bracket 8 via the left hanger bracket 8. A car door 3L is connected.
Accordingly, the left and right car doors 3L and 3R can be opened and closed by operating a door drive motor (not shown).

On the other hand, a pair of left and right door switches 10L and 10R are interposed between the door machine base 1 and the left and right hanger brackets 7 and 8, respectively, so as to detect that the left and right car doors 3L and 3R are opened. It has become.
Since the door switches 10L and 10R have the same structure, the left door switch 10R will be described with reference to FIG. 12. The door switch 10R is fastened to the hanger bracket (movable side) 7 with a bolt B. The movable portion 12 is supported by a bracket 11 and the stationary portion 14 is supported by a bracket 13 fastened to the door machine base (stationary side) 1 by a bolt B.

As a result, when the car door 3L is closed, the rod-like short-circuit terminals 12a and 12b of the movable part 12 and the contacts 15a and 15b of the stationary part 14 come into contact with each other as shown in FIG. 13, and the spring electrodes 16a and 16b are not shown. Since the electric circuit is closed, the elevator can be operated.
On the other hand, when the car door 3L is opened, the rod-like rod-like short-circuit terminals 12a and 12b of the movable part 12 and the contacts 15a and 15b of the stationary part 14 are separated, and an electric circuit (not shown) between the spring electrodes 16a and 16b is opened. The elevator operation is immediately stopped.

By the way, the conventional door switches 10L and 10R described above are attached to the hanger brackets 7 and 8, the door machine base 1 and the like, and are exposed in the hoistway.
As a result, if rainwater or water sprayed to clean the hall of the hall enters the hoistway and hits the door switches 10L and 10R, the contacts 15a and 15b may be corroded, resulting in malfunction. .

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a drip-proof cover for a door switch that solves the above-described problems of the prior art and covers the door switch so that liquid such as water does not hang on the door switch.

The means described in claim 1 for solving the above problem is as follows.
A drip-proof cover that covers a door switch that detects that an elevator door has been opened, the movable part of the door switch being integrally displaced with the movable side of the door, and the stationary part being fixed to the stationary side of the door Is provided with a drip-proof cover that covers the entire stroke of the movable part.
That is, since the movable part and the stationary part of the door switch are covered with the drip-proof cover over the entire stroke range, it is possible to reliably prevent water droplets or the like from adhering to the contact part of the door switch.

The means described in claim 2 for solving the above problem is as follows:
A drip-proof cover that covers a door switch that detects that an elevator door has opened,
A drip-proof cover on the movable side attached to the movable side of the door, covering a movable part integrally displaced with the movable side of the door of the door switch;
A stationary-side drip-proof cover attached to the stationary side of the door that covers a stationary part of the door switch that is fixed to the stationary side of the door.
That is, since the movable part and the stationary part of the door switch are individually covered, water droplets and the like adhere to the contact part of the door switch while avoiding interference with the movable part of the door existing around the door switch. It can be surely prevented.

At this time, as described in claim 3, the drip-proof cover on the movable side and the drip-proof cover on the stationary side of the drip-proof cover of the elevator door switch described in claim 2 approach each other as the door is opened and closed. Sometimes, their shape can be set so that one of them goes inside the other.
Thus, when the movable part and the stationary part of the door switch approach each other, the movable drip-proof cover and the stationary drip-proof cover do not interfere with each other.

According to a fourth aspect of the present invention, the movable drip-proof cover and the stationary drip-proof cover collide with the stationary part of the door switch due to the overstroke of the movable part of the door switch. Before, they can be configured to collide with each other.
As a result, for example, before the movable part of the door switch overstrokes due to the disconnection of the door opening / closing rope and collides with the stationary part of the door switch, the movable-side drip-proof cover and the stationary-side drip-proof cover Since they collide with each other, it is possible to reliably prevent the movable part and the stationary part of the door switch from colliding with each other and being damaged.

In addition, as described in claim 5, the movable-side drip-proof cover and the stationary-side drip-proof cover are arranged so that water droplets entering from the upper edge of the opening do not fall on the contact portion of the door switch. The position of the upper edge with respect to the contact portion in the front-rear direction and the vertical direction can be determined.
That is, the movable-side drip-proof cover and the stationary-side drip-proof cover have an opening facing the counterpart-side drip-proof cover.
For this reason, if water droplets that have fallen from above remain attached to the upper edge of the opening, the water droplets may fall inside the drip-proof cover and adhere to the contact portion of the door switch.
At this time, by appropriately determining the position of the upper edge of the opening of the movable and stationary drip-proof covers, it is possible to reliably prevent water droplets attached to the upper edge from dropping and adhering to the contact portion of the door switch. .

Further, as described in claim 6, the movable-side drip-proof cover and the stationary-side drip-proof cover are provided with an inclined surface on the upper side for carrying the water droplets that have fallen from above to the side away from the opening. be able to.
That is, the movable-side drip-proof cover and the stationary-side drip-proof cover have an opening facing the other side.
For this reason, if water droplets that have fallen from above remain attached to the upper edge of the opening of the drip-proof cover, there is a possibility that the water droplet will wrap around the drip-proof cover and adhere to the contact portion of the door switch.
At this time, if an inclined surface is provided on the upper side to allow water droplets falling from above to flow away from the opening, water droplets falling on the drip-proof cover can be quickly moved away from the upper edge of the opening. Therefore, it is possible to reliably prevent water droplets from adhering to the contact portion of the door switch.

In addition, as described in claim 7, the drip-proof cover can be provided with a second inclined surface on the top thereof for receiving the water droplets that have fallen from above.
That is, if water droplets that have fallen from above remain attached to the upper wall of the drip-proof cover, the water droplets may enter the inside of the drip-proof cover and adhere to the contact portion of the door switch.
At this time, if the second inclined surface is provided on the upper wall of the drip-proof cover, the water drops that have fallen on the drip-proof cover can be quickly taken down, so that the water drops adhere to the contact portion of the door switch. This can be surely prevented.

In addition, as described in Claim 8, the drip-proof cover can be provided with an insertion hole for inserting an electrical wiring.
And after inserting the electric wiring into this insertion hole, the waterproofing treatment is performed between the drip-proof cover and the electric wiring, so that water droplets go around the drip-proof cover and adhere to the contact part of the door switch. Can be reliably prevented.

In addition, as described in claim 9, the drip-proof cover can be provided with an engaging portion for detachably attaching to the movable side or the stationary side of the door.
Accordingly, the drip-proof cover can be easily removed and attached when performing maintenance and inspection work on the door switch.

According to a tenth aspect of the present invention, the drip-proof cover can be provided with a viewing hole for confirming the stroke position of the movable part with respect to the stationary part of the door switch.
That is, when the drip-proof cover is made of an opaque material such as a steel plate, it is difficult to confirm whether or not the stroke position of the movable part with respect to the stationary part of the door switch is accurate.
At this time, it is possible to easily confirm the stroke position by providing a peep hole in the side wall on the front wall side of the drip-proof cover.
In order to prevent water droplets from entering through the peep hole, the side wall on the front wall side of the drip-proof cover can be sufficiently separated from the door switch, or a detachable lid or the like can be provided on the peep hole.

In addition, as described in claim 11, the drip-proof cover can be manufactured from a transparent material.
Thereby, it is possible to easily confirm whether or not the stroke position of the movable part with respect to the stationary part of the door switch is accurate.

  According to the present invention, by providing a drip-proof cover for a door switch that covers the door switch so that liquids such as water do not splash on it, it is possible to reliably prevent the contact of the door switch from causing corrosion and malfunction. it can.

Hereinafter, with reference to FIG. 1 thru | or FIG. 10, the drip-proof cover of the elevator door switch which concerns on this invention is demonstrated in detail.
In the following description, the same reference numerals are used for the same parts as those of the above-described conventional technology, and a duplicate description is omitted.

First Embodiment First, a drip-proof cover according to a first embodiment will be described with reference to FIGS.

A drip-proof cover 100 shown in FIG. 1 includes a box-shaped cover body 20 formed from a transparent resin material such as polycarbonate.
The cover body 20 has an upper wall 20a, a front wall 20b, a bottom wall 20c, a left side wall 20d, a right side wall 20e, and a rear wall 20f. The rear wall 20f is fixed to the door machine base 1 by a bracket (not shown). Has been.
The cover body 20 is dimensioned so that the movable part 12 of the door switch 10 reciprocates inside the cover main body 20, and covers the movable part 12 and the stationary part 14 as a whole.

That is, since the cover body 20 covers the movable portion 12 and the stationary portion 14 of the door switch 10 over the entire stroke range, water droplets or the like fall on the contact portions 12a, 12b, 14a, 14b of the door switch 10. Can be surely prevented.
Further, since the cover body 20 is transparent, it can be easily confirmed whether or not the stroke position of the movable portion 12 with respect to the stationary portion 14 of the door switch 10 is accurate.

Further, like the drip-proof covers 110 and 120 shown in FIG. 2 and FIG. 3, so-called dharma holes 21 and 21 or vertically extending cutouts 22 and 22 are provided in the rear wall 20f of the cover main body 20, thereby Removable attachment to the machine base 1 is possible.
Thereby, when performing the maintenance inspection work of the door apparatus of an elevator, the work which removes the cover main body 20 from the door machine base 1 can be performed easily.

On the other hand, when manufactured from an opaque material such as a steel plate like the drip-proof cover 130 shown in FIG. 4, whether or not the stroke position of the movable part 12 with respect to the stationary part 14 of the door switch 10 is accurate. Confirmation becomes difficult.
At this time, since the viewing hole 23 is provided in the front wall of the drip-proof cover 130, the stroke position can be easily confirmed.
Note that the front wall of the drip-proof cover 130 can be sufficiently separated from the door switch 10 to the front side, or a detachable lid or the like can be provided on the peep hole 23 so that water droplets do not enter from the peep hole 23.

Second Embodiment First, a drip-proof cover according to a second embodiment will be described with reference to FIGS.

  The drip-proof cover 200 shown in FIG. 5 includes a stationary cover body 31 that covers the stationary part 14 of the door switch 10 and a movable cover body 32 that covers the movable part 12 of the door switch 10.

The stationary cover body 31 is formed from a transparent resin material such as polycarbonate, and has an upper wall 31a, a front wall 31b, a bottom wall 31c, a left wall 31d, and a rear wall 31e. A portion facing the main body 32 is an opening.
The rear wall 31e is fixed to the door machine base 1 by a bracket (not shown).

The movable-side cover body 32 is formed from a transparent resin material such as polycarbonate, and has an upper wall 32a, a front wall 32b, a bottom wall 32c, a right side wall 32d, and a rear wall 32e. A portion facing the main body 31 is an opening.
The rear wall 32e is fixed to the hanger bracket 7 by a bracket (not shown).

  That is, since the drip-proof cover 200 of the second embodiment has a structure that individually covers the stationary part 14 and the movable part 12 of the door switch 10, the door switch 10 while avoiding interference with the movable part of the door device. It is possible to reliably prevent water droplets or the like from adhering to the contact portions 12a, 12b, 14a, 14b.

Further, when the movable part 12 approaches the stationary part 14 of the door switch 10, for example, the drip-proof of the modified example shown in FIG. 6 is prevented so that the stationary cover body and the movable cover body do not interfere with each other. As in the case of the cover 210, the movable side cover body 34 can be inserted into the stationary side cover body 33.
On the contrary, the stationary cover body 33 can be inserted into the movable cover body 34.

The stationary cover body 31 and the movable cover body 32 can be configured to collide with each other before the movable part 12 of the door switch 10 overstrokes and collides with the stationary part 14.
Thereby, for example, the movable part 12 of the door switch 10 is overstroked by the disconnection of the door opening / closing rope, and before it collides with the stationary part 14 of the door switch 10, the stationary cover body 31 and the movable cover body 32. And the movable portion 12 of the door switch 10 can be reliably prevented from colliding with the stationary portion 14 and being damaged.

By the way, in the drip-proof covers 200 and 210 shown in FIGS. 5 and 6, the stationary cover bodies 31 and 33 and the movable cover bodies 32 and 34 are both openings facing the counterpart cover body. have.
For this reason, when water droplets that have fallen from above adhere to the upper edge of the opening and fall to the inside of the cover main body, there is a risk of adhering to the contact portion of the door switch.

Accordingly, in the movable cover body 35 shown in FIG. 7, the front-rear direction dimension X and the vertical dimension Y of the upper edge 35b with respect to the door switch contact part 12b are appropriately determined, so that the contact part of the door switch is determined. The elevation angle α when looking up at the upper edge 35b from 12b is set to be larger than a predetermined value.
Thereby, even if the cover main body 35 moves to the left side in the drawing with the stroke of the movable portion 12 of the door switch 10 and the water droplets attached to the upper edge 35b fall inside the cover main body 35, the contact portion 12b of the door switch. It will not adhere to.

On the other hand, the movable cover body 36 shown in FIG. 8 has an inclined surface 36b connected to the upper wall 36c for receiving water droplets that have fallen from the upper side to the side away from the opening 36a.
As a result, the water droplets that have fallen on the opening 36a in the cover body 36 can be quickly moved away from the upper edge of the opening 26a, so that they adhere to the contact parts 12a and 12b of the movable part 12 of the door switch 10. It can be surely prevented.
Further, since the inclined surface 36e is continuously provided on the opening 36a side of the lower wall 36d of the cover main body 36, water droplets that have fallen on the opening 36a of the cover main body 36 can be quickly received downward. .

Furthermore, like the cover body 37 on the movable side shown in FIG. 9, a second inclined surface 37a can be provided on the upper part for receiving the water droplets that have fallen from the upper side downward.
That is, if water droplets that have fallen from above remain attached to the upper wall of the cover main body 37, the water droplets may enter the inside of the cover main body 37 and adhere to the contact portion of the door switch.
At this time, since the second inclined surface 37a is provided on the upper portion of the cover main body 37, the water droplets that have fallen on the drip-proof cover immediately flow downward as shown by arrows in FIG. It can be reliably prevented from adhering to the contact portion of the door switch.

The stationary cover 38 shown in FIG. 9 has an upper wall 38a, a front wall 38b, a bottom wall 38c, a left side wall 38d and a rear wall 38e. An insertion hole 38f for inserting an electric wire W extending through the resting portion 14 is provided.
Then, after the electric wire W is inserted into the insertion hole 38f, a waterproof treatment is applied between the left side wall 38d and the electric wire W, so that water droplets enter the inside of the cover body 38 and enter the contact portion of the door switch 10. It can be surely prevented from adhering.

As mentioned above, although each embodiment of the elevator door switch which concerns on this invention, and its modification were demonstrated in detail, it cannot be overemphasized that this invention is not limited by embodiment mentioned above etc., and various changes are possible. .
For example, in the drip-proof covers of the first and second embodiments described above, each cover body is provided with a bottom wall and a rear wall, but the bottom wall and the rear wall are not provided. You can also.

The perspective view which shows the drip-proof cover of 1st Embodiment. The front view which shows the drip-proof cover of a modification. The front view which shows the drip-proof cover of a modification. The front view which shows the drip-proof cover of a modification. The perspective view which shows the drip-proof cover of 2nd Embodiment. The front view which shows the drip-proof cover of a modification. The front view which shows the drip-proof cover of a modification. The front view which shows the drip-proof cover of a modification. The front view which shows the drip-proof cover of a modification. The perspective view which shows the drip-proof cover of a modification. The front view of the car door which shows the attachment structure of a door switch. The front view which expands and shows the attachment structure of a door switch. Sectional drawing which shows the structure of a door switch.

3L, 3R car door
10L, 10R Door switch 12 Movable part 12a, 12b Rod-like short-circuit terminal 14 Stationary part 15a, 15b Contact 16a, 16b Spring-like electrode 20 Cover body 21 Dalma hole 22 Notch 23 Peep hole 31 Stationary cover body 32 Movable cover Main body 33 Cover body on stationary side 34 Cover body on movable side 35 Cover body of modified example 36 Cover body of modified example 37 Cover body of modified example 38 Cover body of modified example 100 Drip-proof cover 200 of the first embodiment First implementation Form of drip-proof cover

Claims (11)

A drip-proof cover that covers a door switch that detects that an elevator door has opened,
A drip-proof cover that covers the movable part of the door switch integrally with the movable side of the door and the stationary part fixed to the stationary side of the door over the entire stroke range of the movable part. Drip-proof cover for elevator door switch. A drip-proof cover that covers a door switch that detects that an elevator door has opened,
A drip-proof cover on the movable side attached to the movable side of the door, covering a movable part integrally displaced with the movable side of the door of the door switch;
Covering a stationary part fixed to the stationary side of the door of the door switch, a stationary side drip-proof cover attached to the stationary side of the door;
A drip-proof cover for an elevator door switch.   When the movable part and the stationary part of the door switch come close to each other, one of the movable-side drip-proof cover and the stationary-side drip-proof cover is inserted into the other of the shapes. The drip-proof cover for an elevator door switch according to claim 2, wherein   The movable-side drip-proof cover and the stationary-side drip-proof cover are configured to collide with each other before the movable part collides with the stationary part of the door switch due to an overstroke. A drip-proof cover for an elevator door switch according to any one of claims 2 to 5.   The movable-side drip-proof cover and the stationary-side drip-proof cover are positioned at the front, back, top and bottom of the upper edge with respect to the contact portion so that water drops entering from the upper edge of the opening do not fall on the contact portion of the door switch The drip-proof cover for an elevator door switch according to claim 2 or 3, wherein:   The movable-side drip-proof cover and the stationary-side drip-proof cover have an inclined surface at the top of the opening for receiving water droplets that have fallen from above on the side away from the opening. The drip-proof cover for an elevator door switch according to claim 2 or 3.   The elevator door switch according to any one of claims 1 to 6, wherein the drip-proof cover has a second inclined surface on the upper part for receiving downward water drops falling from above. Drip-proof cover.   The drip-proof cover for an elevator door switch according to any one of claims 1 to 7, wherein the drip-proof cover has an insertion hole for inserting electric wiring.   The elevator door switch prevention device according to any one of claims 1 to 8, wherein the drip-proof cover has an engaging portion for detachably attaching to the movable side or the stationary side of the door. Drop cover.   The elevator door switch according to any one of claims 1 to 9, wherein the drip-proof cover has a viewing hole for confirming a stroke position of the movable part with respect to a stationary part of the door switch. Drip-proof cover.   The drip-proof cover for an elevator door switch according to any one of claims 1 to 10, wherein the drip-proof cover is made of a transparent material.

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