JP6762225B2 - Elevator landing side door unlocking device - Google Patents

Description

The present invention relates to a landing-side door unlocking device for a maintenance worker (worker) to manually unlock a landing-side door from the landing-side of an elevator during maintenance of an elevator or the like.

As a landing-side door unlocking device for this type of elevator, for example, those described in Patent Documents 1 and 2 have been proposed.

In the one described in Patent Document 1, a handle having a U-shaped cross section and a plate-shaped rotating key can swing around the hinge portion, and at the same time, both have a pin orthogonal to the hinge portion. It is possible to swing through it. Then, if necessary, the rotating key can be folded and stored inside the handle, and the rotating key is inserted into, for example, a keyhole set at the upper part of the elevator landing side door. While functioning as a push-up key, the end of the handle also functions as a push-up key.

Further, in the case described in Patent Document 2, the portion corresponding to the rotation key can be folded and stored inside the U-shaped cross section as in the case described in Patent Document 1. On the other hand, the portion corresponding to the handle is expandable and contractible.

Utility Model Registration No. 2580296 Japanese Unexamined Patent Publication No. 2016-37326

However, in the case described in Patent Document 1, since two types of keys are substantially attached, the pattern is superior to the case of carrying two independent keys for each. Since the body has a U-shaped cross section, a feeling of bulkiness cannot be denied. Therefore, for example, when a maintenance worker carries the product while it is inserted into the chest pocket of the work clothes, it is easy to get caught when it is inserted into the chest pocket, which is difficult in terms of storability, and also has the bulky feeling mentioned above. Together, there is still room for improvement in terms of portability.

Further, in the case described in Patent Document 2, since the key portion can be folded and stored inside the handle and the handle itself can be shrunk, the same as the one described in Patent Document 1. In addition to being excellent in portability, when unlocking the landing side door manually, it is easy to unlock by inserting the key part into the keyhole located higher than the height, which is especially convenient for short workers. It becomes.

However, in the case described in Patent Document 2, similarly to the one described in Patent Document 1, the stretchable handle has a U-shaped cross section, so that the feeling of bulkiness is undeniably different. Since a plurality of wing nuts protruding in the direction are attached, a feeling of protrusion or a feeling of protrusion in each of the three dimensions is also accompanied. Therefore, for example, when a maintenance worker carries it while inserting it into the chest pocket of the work clothes, it is easy to get caught when it is inserted into the chest pocket, which is difficult in terms of storability, and also has a three-dimensional bulkiness. Therefore, there is still room for improvement in terms of portability.

The present invention has been made by paying attention to such a problem, and particularly improves portability and storability when a maintenance worker carries the work clothes while being inserted into the chest pocket of the work clothes, and is taller than the height. It provides an elevator landing side door unlocking device suitable for unlocking work performed by inserting a key portion into a keyhole at a position.

The present invention is an elevator landing side door unlocking device having an unlocking key for unlocking the landing side door by inserting it into a keyhole provided in the landing side door of the elevator, and is made of a bar material. It is provided with a lock key and a flat plate-shaped handle portion whose length dimension is larger than that of the width dimension.

The unlocking key is formed in a crank shape as a whole by bending one end of the stay as a key portion and the other end as a rotating shaft portion in opposite directions, while the handle portion. At one end in the length direction of, the one end in the length direction of the handle and the unlocking key rotate around the rotation shaft in a state where the axial direction of the rotation shaft and the width direction of the handle are matched. By being connected so as to be relatively rotatable, the unlocking key and the handle portion can be extended and expanded and can be folded.

Then, the unlocking key is located on one side of the rotating shaft portion, the handle portion is located on the other side, and the unlocking key and the handle portion are both located on the same plane. While it is in the extended and unfolded state when it is rotated, it is in the folded state when it is relatively rotated so that the unlocking key and the handle are located on one side of the rotating shaft so that they overlap each other. It has become like.

Then, the connection portion between the unlocking key and one end in the length direction of the handle portion is locked to the extended / expanded state by restricting the relative rotation between the unlocking key and the handle portion in the extended / expanded state. Locking means are provided.

In a preferred embodiment, the bar-made unlocking key is the first unlocking key, and the handle portion also serves as the second unlocking key having the other end in the length direction as the key portion. It shall be.

Further, as a more desirable embodiment, in relation to the locking means, one end of the handle portion in the length direction and the rotation shaft portion can be relatively moved in the axial direction of the rotation shaft portion. The locking means is formed of a hook portion formed by bending the tip end portion of the rotating shaft portion, and a receiving groove formed at one end portion in the length direction of the handle portion and capable of receiving the hook portion. Shall be. Then, in the extended / expanded state, the handle portion and the unlocking key are relatively moved in the axial direction of the rotating shaft portion to receive the hook portion in the receiving groove, so that the extended / expanded state can be locked. It shall be.

As a more specific embodiment, a folded back plate portion is arranged so as to overlap one end portion in the length direction of the handle portion, and the end portion in the length direction of the handle portion and the attachment plate portion are used. It is assumed that the receiving groove is formed while holding the rotating shaft portion. Similarly, the length of the handle portion shall be smaller than the length of the unlock key.

Therefore, the landing-side door unlocking device according to the present invention is formed of a flat plate-shaped unlocking key and a crank-shaped handle portion made of a bar, and is expandable and expandable and foldable. Therefore, it can be flat or flat with a remarkably small thickness, especially in the folded state.

According to the present invention, the landing-side door unlocking device formed of a flat handle and a bar-shaped and crank-shaped unlocking key is a flat or flat device having a significantly small thickness in the folded state. Therefore, especially when a maintenance worker carries the work clothes in a state of being inserted into the chest pocket, the maintenance worker does not get caught and is excellent in the storability and portability. In addition, in the extended and deployed state of the landing side door unlocking device, the length is substantially the sum of the length of the unlocking key and the length of the handle, so the keyhole is located higher than the height of the maintenance staff. The unlocking work performed by inserting the key part into the door can be easily performed.

It is a figure which shows the 1st Embodiment of the door unlocking apparatus on the landing side of the elevator which concerns on this invention, and is the perspective view in the extended unfolded state and the locked state. (A) is a front view of the landing side door unlocking device shown in FIG. 1, and (b) is a right side view of FIG. 1 (a). The front view of the landing side door unlocking device shown in FIG. 1 in the extended / deployed state and in the unlocked state. An enlarged cross-sectional view taken along the line AA of FIG. A perspective view of the landing side door unlocking device shown in FIG. 1 in a folded state. (A) is a front view of the landing side door unlocking device in the folded state shown in FIG. 5, and (b) is a right side view of FIG. 5 (a). FIG. 3 is a perspective view showing a usage state of the landing side door unlocking device shown in FIG. FIG. 3 is a perspective view showing another usage state of the landing side door unlocking device shown in FIG.

1 to 8 show a more specific form for carrying out the elevator landing side door unlocking device (hereinafter, simply abbreviated as unlocking device) 1 according to the present invention, and in particular, FIG. 1 is a perspective view of the unlocking device 1 in the extended / expanded state and in the locked state, FIG. 2A is a front view of the unlocking device 1 shown in FIG. 1, and FIG. 1B is the same figure. The right side view of (a) is shown.

As shown in FIGS. 1 and 2, the unlocking device 1 has a rectangular and flat bar-shaped handle portion 2 having a significantly larger length dimension than the width dimension and a constant thickness, and the handle portion. It is composed of an unlocking key 3 which is connected to one end in the length direction of 2 and is formed by bending a round bar-shaped material having a relatively small diameter.

The unlocking key 3 has a long straight stay 3a left in the central portion in the longitudinal direction, one end of the stay as a key portion 3b, and the other end as a rotation shaft portion 3c shorter than the key portion 3b. It is formed in a crank shape as a whole by bending each in the opposite direction at a substantially right angle. Further, a short hook portion 3d bent at a substantially right angle in the direction opposite to the stay 3a is formed at the tip portion of the rotating shaft portion 3c. The rotating shaft portion 3c between the stay 3a and the hook portion 3d is formed longer than the width dimension of the handle portion 2 by a predetermined amount.

On the other hand, at one end of the handle 2 in the length direction, as shown in FIG. 1, a stepped and substantially quadrangular supporting plate 4 is folded back from one end of the handle 2 and then overlapped. Then, the rotating shaft portion 3c of the unlocking key 3 is wrapped in the tubular bending base portion 4a of the supporting plate portion 4, and is supported so as to be rotatable and relatively movable by a predetermined amount in the axial direction. ing. Further, as shown in FIGS. 1 and 2, a flange portion 4b is formed in the auxiliary plate portion 4 so as to be continuous with the bending base portion 4a and substantially perpendicular to the bending base portion 4a.

Here, (a) of FIG. 2 shows the unlocked device 1 in the extended / deployed state and the locked state, whereas FIG. 3 shows the unlocked device 1 in the extended / deployed state and the unlocked state. Further, FIG. 4 shows an enlarged cross-sectional view taken along the line AA of FIG. As shown in FIGS. 3 and 4, in the overlapping portion between one end of the handle portion 2 and the attachment plate portion 4, the space between one end of the attachment plate portion 4 in the width direction and the flange portion 4b is the handle. It is formed as a receiving groove 5a that opens on one end surface in the width direction of the portion 2.

Therefore, in the extended / expanded state and the unlocked state shown in FIGS. 3 and 4, the hook portion 3d on the unlocking key 3 side does not enter the receiving groove 5a, so that the handle portion 2 and the unlocking key 3 are rotated shaft portions 3c. It is possible to rotate relative to the center of rotation. On the other hand, in the locking operation for changing from the unlocked state of FIG. 3 to the locked state of FIG. 2 (a), in the unlocked state of FIG. 3, the handle portion 2 and the unlock key 3 are held by the handle portion 2. As shown in FIG. 2, the hook portion 3d on the unlocking key 3 side is fitted into the receiving groove 5a by relatively moving in the width direction (the axial direction of the rotating shaft portion 3c). By doing so, the handle portion 2 and the unlocking key 3 are in a locked state in which they cannot rotate relative to each other around the rotating shaft portion 3c. As a result, it is possible to self-hold the locked state in the extended / unfolded state shown in FIG. 2, and the locking means 5 for locking / unlocking the unlocking device 1 at the hook portion 3d and the receiving groove 5a (see FIG. 4). ) Is formed.

Here, the receiving groove 5a shown in FIG. 4 is set so that the groove width on the inlet opening side is smaller than the groove width on the inner side depending on the degree of bending of the flange portion 4b, and fits into the receiving groove 5a. The structure is such that the hook portion 3d that has been made does not easily pop out. As a result, the structure is such that the locked state of FIGS. 1 and 2 described above can be easily held by itself. On the contrary, when changing from the locked state of FIGS. 1 and 2 to the unlocked state of FIG. 3, the hook portion 3d can pull out the minimum groove width portion of the receiving groove 5a against the elastic force of the flange portion 4b. It is sufficient to apply a certain amount of external force. As shown in FIGS. 1 to 3, the auxiliary plate portion 4 is welded and fixed to the handle portion 2 by, for example, the welded portion 6 shown by the dent of spot welding.

On the other hand, FIG. 5 shows a perspective view of the unlocking device 1 in the folded state, FIG. 6 (a) is a front view of the unlocking device 1 shown in FIG. 5, and FIG. 6 (b) is the same. The right side view of (a) is shown respectively. In the unlocked state shown in FIG. 3, the handle portion 2 and the unlocking key 3 are relatively rotated around the rotation shaft portion 3c so that their lengths overlap each other, as shown in FIGS. In addition, it is possible to make the folded state so that the length of the handle portion 2 fits within the range of the length of the unlocking key 3.

Further, if the handle portion 2 also serves as another unlock key different from the unlock key 3, and the unlock key 3 is used as the first unlock key, the handle portion 2 also serves as the second unlock key at the same time. Is forming. Therefore, as shown in FIGS. 5 and 6 in addition to FIGS. 1 to 3, a hexagonal hole 7 is formed at the other end of the handle portion 2 in the length direction, and the tip side of the handle portion 2 is further further than the hexagonal hole 7. In the case, the cross section is bent into a crank shape so as to have a slight step, and a pair of key ridges 8 are formed so as to protrude from the portion.

Therefore, in the unlocking device 1 formed in this way, as described above, the handle portion 2 and the unlocking key 3 have their respective lengths in the extended / expanded state and the unlocked state shown in FIG. The folded state shown in FIGS. 5 and 6 can be obtained by relatively rotating the rotating shaft portion 3c around the rotation center so as to overlap each other in the direction. In this folded state, the total length of the handle portion 2 is shorter than the total length of the unlocking key 3, and the length of the handle portion 2 is substantially within the range of the length of the stay 3a including the key portion 3b and the rotating shaft portion 3c. It will fit inside.

As a result, the folded unlock key 1 formed from the handle 2 and the unlock key 3 has a flat or flat shape with a small thickness. Therefore, for example, when a maintenance worker carries it in the chest pocket of work clothes, in addition to being easy to store in the chest pocket and not bulky, it also has a three-dimensional feeling of protrusion or protrusion in each direction. Since there are few, it is extremely portable. Further, for example, when storing with other tools in a machine room or the like, for example, the hexagonal hole 7 formed in the handle portion 2 is used to suspend and store the product on a hook or the like.

On the other hand, when the unlocked device 1 can be used as the unlocking device 1 and the locked state is set, the handle portion 2 and the unlocking key 3 are moved from the folded state shown in FIGS. Is relatively rotated with the center of rotation as the center of rotation to obtain the extended and unfolded state shown in FIG. Further, since the unlocked state remains in the expanded / expanded state of FIG. 3, the handle portion 2 and the unlocking key 3 are relatively moved in the axial direction of the rotating shaft portion 3c by a predetermined amount from the state of FIG. The hook portion 3d at the end of the unlocking key 3 is fitted into the receiving groove 5a shown in FIG. As a result, the unlocking device 1 is in the extended / unfolded state and the locked state shown in FIGS. 1 and 2 in which the handle portion 2 and the unlocking key 3 cannot rotate relative to each other.

When the landing side door is manually unlocked by using the unlock key 1, the maintenance worker stands upright with the handle 2 on the lower side and the unlock key 3 on the upper side, as shown in FIG. Grasp the handle portion 2 of the unlocking device 1 in the posture, and insert the key portion b at the tip of the unlocking key 3 into the long hole-shaped keyhole 10 set in the upper part of the landing side door 9. Then, the lock device attached to the landing side door 9 is unlocked by moving the entire unlock key 3 along, for example, the longitudinal direction of the keyhole 10. In this case, the handle portion 2 and the unlocking key 3 of the unlocking device 1 are in the extended / expanded state and the locked state as described above, and the relative rotation of the two is prevented, so that the keyhole 10 is oriented in the longitudinal direction. The unlock key 3 can be moved smoothly along the line. Further, since the unlocking device 1 has a total length of the length of the handle portion 2 and the length of the unlocking key 3, even a small maintenance worker with low elongation can easily perform the unlocking operation. It can be carried out.

Further, depending on the specifications of the elevator, the keyhole 10 as shown in FIG. 7 is not set. For example, as shown in FIG. 8, the upper frame portion 12 of the three-sided frame on the landing side and the upper part of the door 13 on the landing side In some cases, the gap G between the door and the door is substantially used as a keyhole, and the unlocking device 1 is inserted into the gap G to unlock the door. In such a case, as shown in FIG. 8, the unlocking device 1 is turned upside down, and the maintenance worker grasps the unlocking device 1 with the unlocking key 3 as a handle, and sets the upper frame portion 12 of the three-sided frame. The tip of the plate-shaped handle portion 2 that also serves as the second unlocking key is inserted into the gap G with the upper part of the landing side door 13. Then, by moving the entire handle portion 2 in the door width direction along the gap shown in the figure, for example, a lock device (not shown) attached to the landing side door 13 is unlocked.

Even in this case, the handle portion 2 and the unlocking key 3 of the unlocking device 1 are in the extended / expanded state and the locked state as described above, and the relative rotation of the two is prevented, so that they are on the three-sided frame. The handle portion 2 also serving as the second unlocking key can be smoothly moved along the gap G between the frame portion 12 and the upper portion of the landing side door 13. Further, since the unlocking device 1 has a total length of the length of the handle portion 2 and the length of the unlocking key 3, even a small maintenance worker with low elongation can easily perform the unlocking operation. It can be carried out.

After the unlocking operation is completed, with respect to the unlocking key 1 in the extended / expanded state and the locked state shown in FIGS. 1 and 2, the handle portion 2 and the unlocking key 3 are moved in the axial direction of the rotating shaft portion 3c. It is moved relative to each other, and the hook portion 3d is pushed out from the receiving groove 5a and removed to bring it into an unlocked state. Then, the handle portion 2 and the unlock key 3 are relatively rotated around the rotation shaft portion 3c, and the length of the handle portion 2 and the length of the unlock key 3 overlap each other as shown in FIGS. By reducing the total length in this way, it is in a folded state.

As described above, according to the unlocking device 1 of the present embodiment, it is expandable and foldable, and it can be locked and unlocked in the extended and unfolded state, which is excellent in convenience. In addition, since it is extremely thin in the folded state, it is easy to store even when a maintenance worker carries it in the chest pocket of work clothes, and it is not bulky and has little protrusion, so it is extremely portable. It is excellent.

1 ... Door unlocking device on the landing side 2 ... Handle (second unlocking key)
3 ... Unlock key (first unlock key)
3a ... Stay 3b ... Key part 3c ... Rotating shaft part 3d ... Hook part 4 ... Attachment plate part 5 ... Locking means 5a ... Receiving groove 10 ... Keyhole G ... Gap (keyhole)

Claims (5)

An elevator landing-side door unlocking device having an unlocking key for unlocking the landing-side door by inserting it into a keyhole provided in the elevator landing-side door.
It is equipped with an unlocking key made of bar material and a flat handle part whose length dimension is larger than the width dimension.
The unlocking key is formed in a crank shape as a whole by being bent in opposite directions, with one end of the stay serving as a key portion and the other end serving as a rotating shaft portion.
At one end of the handle in the length direction, the one end of the handle in the length direction and the unlocking key are on the rotation shaft in a state where the axial direction of the rotation shaft and the width of the handle are matched. The unlocking key and the handle can be extended and expanded and can be folded by being connected so as to be relatively rotatable around the center of rotation.
Both were rotated relative to each other so that the unlocking key was located on one side of the rotating shaft and the handle was located on the other side, and the unlocking key and the handle were both located on the same plane. While the state becomes the extended deployment state,
The unlocking key and the handle are overlapped on one side of the rotating shaft and are positioned together, so that they are in a folded state with relative rotation.
A locking means is provided at the connecting portion between the unlocking key and one end in the length direction of the handle portion to regulate the relative rotation between the unlocking key and the handle portion in the extended / expanded state and lock the handle portion in the extended / expanded state. An elevator landing side door unlocking device that is characterized by being installed. The unlocking key made of the bar is the first unlocking key.
The platform-side door unlocking device for an elevator according to claim 1, wherein the handle portion also serves as a second unlocking key having the other end in the length direction as a key portion. While one end of the handle portion in the length direction and the rotation shaft portion are relatively movable in the axial direction of the rotation shaft portion,
The locking means is formed of a hook portion formed by bending the tip end portion of the rotating shaft portion, and a receiving groove formed at one end portion of the handle portion in the length direction and capable of receiving the hook portion. ,
In the extended / expanded state, the handle portion and the unlocking key are relatively moved in the axial direction of the rotating shaft portion to receive the hook portion in the receiving groove, so that the extended / expanded state can be locked. The elevator landing side door unlocking device according to claim 2. A folded back plate portion is overlapped and arranged at one end portion in the length direction of the handle portion.
The elevator landing-side door unlocking according to claim 3, wherein a receiving groove is formed while holding the rotation shaft portion by one end portion in the length direction of the handle portion and the auxiliary plate portion. Instrument. The elevator landing-side door unlocking device according to claim 4, wherein the length of the handle portion is smaller than the length of the unlocking key.

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