CN1514800A - Elevator entrance door device - Google Patents

Abstract

A landing stage door of an elevator comprising a fire retarding member disposed partially and fixed at the upper part of the open side end part of the landing stage door to face the jamb upon closing the door. Any one of the jamb and the fire retarding member is provided with a hole and the other is provided with a pair being inserted into the hole upon closing the door and limiting deformation of the landing stage door to the elevator shaft side.

Description

Elevator entrance door device

technical field

The present invention relates to an elevator entrance door device having a fireproof structure.

Background technique

Fig. 12 is a sectional view showing an example of a conventional elevator landing door device, and Fig. 13 is a sectional view taken along line XIII-XIII in Fig. 12 .

In the figure, the entrance and exit 2 are provided on the entrance wall 1 of the building. This entrance/exit 2 is formed by the tripartite frame 3 which is a frame body. The tripartite frame 3 has a pair of vertical frames 4a, 4b extending vertically, and an upper frame 4c extending horizontally provided between the upper parts of the vertical frames 4a, 4b. A vertical frame fireproofing member 6 having an L-shaped cross section is fixed to end portions of the vertical frames 4a and 4b on the side of the ascending and descending path 5 .

The entrance and exit 2 of the exit are opened and closed by a pair of doors 7 of the exit. A door side fireproof member 8 facing the vertical frame fireproof member 6 when the door is closed is fixed to the door opening side end of the door 7 of each entrance. The vertical frame fireproof member 6 and the door side fireproof member 8 extend vertically along the entire vertical direction of the door 7 of the entrance (the vertical direction in FIG. 13 ).

An upper frame fireproof member 9 extending horizontally and having an L-shaped cross section is fixed to an end portion of the upper frame 4c on the side of the hoistway 5 . The upper end of the door 7 of each entrance is fixed with the door top fireproof member 10 opposite to the upper frame fireproof member 9 when the door is closed.

A boarding threshold 11 is provided on the floor of the boarding doorway 2 . A foot 12 inserted into the door sill 11 of the door is provided at the lower end of the door 7 of each landing.

In this entrance door device, there is a structure in which the door side fireproof member 8 is opposed to the longitudinal frame fireproof member 6, and the door upper fireproof member 10 is opposed to the upper frame fireproof member 9. kuri) structure. Once the door 7 of the entrance is deflected due to a fire, the fireproof member 8 on the side of the door is engaged with the fireproof member 6 of the longitudinal frame, and the fireproof member 10 on the upper part of the door is engaged with the fireproof member 9 of the upper frame, so that the door of the entrance can be prevented from being damaged. 7 out. With this configuration, the necessary fire performance can be obtained.

However, the above-mentioned fireproof structure is applicable to newly established entrance door devices. In order to be applicable to existing entrance door devices, it is necessary to replace all the three-way frame 3 and the door 7 of the entrance or to implement a large-scale additional installation project. It is both troublesome and costly. Also, even if it is applicable to the occasion of a new elevator, because the fireproof member 8 is long, it will take a lot of time for installation and adjustment.

Contents of the invention

In order to solve the above-mentioned problems, the present invention aims to provide an elevator landing door device in which a fireproof structure can be easily added to the landing door.

The entrance door device for an elevator of the present invention comprises: a frame body having a vertically extending longitudinal frame and forming an entrance and exit, and an entrance door for opening and closing the entrance and exit; it is characterized in that, The upper portion of the door opening side end is partially arranged and fixed with a fireproof member facing the longitudinal frame when the door is closed. A hole is provided on either side of the longitudinal frame and the fireproof member, and a hole is provided on the other side of the longitudinal frame and the fireproof member. There is an insertion part, which is inserted into the hole when the door is closed, and restricts deformation of the door of the landing toward the side of the hoistway.

Also, the entrance door device for an elevator of the present invention includes: a frame body having a vertically extending vertical frame and forming an entrance and exit, and an entrance door for opening and closing the entrance; The upper portion of the door opening side end of the entrance door is partially arranged and fixed with a door fireproof member having a first opposing surface extending parallel to the opening and closing direction of the entrance door, and a fixing member is fixed on the vertical frame, and A vertical frame fireproof member is installed through the fixing member, and the vertical frame fireproof member has a second opposite surface. When the door is closed, the first opposite surface and the second opposite surface face each other to limit the door of the entrance to the liftway. side deformation.

A brief description of the drawings

Fig. 1 is a sectional view showing an elevator landing door device according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing main parts of FIG. 1 .

Fig. 3 is a cross-sectional view showing an elevator landing door device according to Embodiment 2 of the present invention.

FIG. 4 is a perspective view showing main parts of FIG. 3 .

Fig. 5 is a sectional view showing an elevator landing door device according to Embodiment 3 of the present invention.

FIG. 6 is a perspective view showing main parts of FIG. 6 .

Fig. 7 is a cross-sectional view showing an elevator landing door device according to Embodiment 4 of the present invention.

FIG. 8 is a perspective view showing main parts of FIG. 7 .

Fig. 9 is a sectional view showing an elevator landing door device according to Embodiment 5 of the present invention.

Fig. 10 is a perspective view showing main parts of Fig. 9 .

Fig. 11 is an exploded perspective view showing Fig. 10 and the vertical frame and the vertical frame fire protection member.

Fig. 12 is a sectional view showing an example of a conventional elevator entrance door device.

Fig. 13 is a cross-sectional view along line XIII-XIII of Fig. 12 .

Detailed ways

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1

Fig. 1 is a cross-sectional view showing an elevator landing door device according to Embodiment 1 of the present invention, and Fig. 2 is a perspective view showing the main part of Fig. 1 . In the figure, the entrance and exit 2 are provided on the entrance wall 1 of the building. This entrance/exit 2 is formed by the tripartite frame 3 which is a frame body. The tripartite frame 3 has a pair of vertical frames 4a, 4b extending vertically, and an upper frame 4c extending horizontally provided between the upper parts of the vertical frames 4a, 4b ( FIG. 13 ). Holes 21 are provided near the upper ends of the vertical frames 4a, 4b.

The entrance and exit 2 of the exit are opened and closed by a pair of doors 7 of the exit. A flat plate-shaped fireproof member 21 facing the vertical frames 4a, 4b when the door is closed is fixed to the upper portion of the door-opening side end of the door 7 of each landing. On the fireproof member 22, a pin 23, which is an insertion part, is fixed by welding, and the pin 23 is inserted into the hole 21 when the door is closed, so as to limit the deformation of the door 7 of the entrance to the hoistway side. A bolt or the like can be used as the pin 23 .

As in FIG. 13 , a boarding threshold 11 is provided on the floor of the boarding doorway 2 . A door foot 12 inserted into a door sill 11 is provided at the lower end of each door 7 of the door.

There is preferably a certain margin between the diameter of the hole 21 and the diameter of the pin 23 . This can absorb the looseness of the door 7 of the entrance, and the pin 23 can be inserted into the hole 21 more reliably when the door is closed.

Adopt this entrance door device, since the pin 23 is inserted in the hole 21 when the door is closed, it can limit the deformation of the door 7 of the entrance to the liftway 5 side even when heated by a fire, and prevent the door 7 of the entrance from being deformed. Escape, and can prevent flame and smoke from flowing into hoistway 5. And because the fire prevention member 22 is only partially configured and fixed on the top of the door opening side end of the door 7 of the entrance, and only the holes 21 need to be set on the vertical frames 4a, 4b, it is therefore necessary to install the new and established A fireproof structure can be added easily on the door 7 of the entrance.

Here, since the door legs 12 are inserted into the entrance sill 11, even when the entrance door 7 is heated by fire, the lower end of the entrance door 7 is in a quasi-fixed state. In contrast, the upper end of the entrance door 7 is suspended by a door hook (not shown), so once the entrance door 7 is deformed, the gap between the entrance door 7 and the three-way frame 3 will increase.

However, in Embodiment 1, since the hole 21, the fireproof member 22 and the pin 23 are provided near the upper end of the door 7 of the entrance, the gap between the door 7 of the entrance and the tripod frame 3 can be effectively prevented. . That is, sufficient fireproof performance can be ensured without providing a fireproof structure spanning the entire vertical direction of the door 7 of the landing.

In addition, in the entrance door device of the first embodiment, since the fire prevention member 22 is only partially attached to a portion of the entrance door 7 in the vertical direction, an increase in the weight of the entrance door 7 can be suppressed.

In the above example, the pin 23 is welded to the fireproof member 21, but the fixing method of the insertion member is not limited to this.

Moreover, the shape of the hole can be changed in various ways according to the cross-sectional shape of the insertion member, and it may be a square or a long hole extending in the vertical direction.

In addition, the number of holes and insertion members is not particularly limited, and for example, a plurality of insertion members may be simultaneously inserted into one elongated hole.

Example 2

Fig. 3 is a sectional view showing an elevator landing door device according to Embodiment 2 of the present invention, and Fig. 4 is a perspective view showing the main part of Fig. 3 .

In the drawing, a plurality of slits 24 serving as holes are provided near the upper ends of the vertical frames 4a, 4b. A flat plate-shaped fireproof member 25 facing the vertical frames 4a, 4b when the door is closed is fixed to the upper portion of the door-opening side end of the door 7 of each landing.

The end of the fireproof member 25 is provided with an insertion portion, that is, a bending portion 25a, which is inserted into the slit 24 when the door is closed, so as to limit the deformation of the door 7 of the entrance to the side 5 of the hoistway. The bent portion 25a is formed by bending a part of the fire prevention member 25 . Other structures are the same as in Embodiment 1.

Adopt this entrance door device, since the bending part 25a is inserted in the slit 24 when the door is closed, it can limit the deformation of the door 7 of the entrance to the liftway 5 side even when it is heated due to a fire, and can prevent the deformation of the entrance. Door 7 escapes, and can prevent flame and smoke from flowing into hoistway 5. And because the fire prevention member 25 is only partially configured and fixed on the upper part of the door opening side end of the door 7 of the entrance, and only the slits 24 need to be set on the longitudinal frames 4a, 4b, it is therefore necessary to install the new and established slits. A fireproof structure can be added easily on the door 7 of the entrance.

Furthermore, since the bending portion 25a is provided integrally with the fireproof member 25, the number of parts can be reduced, and the installation can be further facilitated.

Example 3

Fig. 5 is a cross-sectional view showing an elevator landing door device according to Embodiment 3 of the present invention, and Fig. 6 is a perspective view showing the main part of Fig. 5 . In this example, the pin 26 which is an insertion part is fixed to the vicinity of the upper end part of the vertical frame 4a, 4b by welding. A flat plate-shaped fireproof member 25 facing the vertical frames 4a, 4b when the door is closed is fixed to the upper portion of the door-opening side end of the door 7 of each landing. The fire prevention member 27 is provided with a hole 27a into which the pin 26 can be inserted when the door is closed.

With this entrance door device, since the pin 26 is inserted into the hole 27a when the door is closed, deformation of the entrance door 7 to the side of the liftway 5 can be restricted. That is, contrary to the first embodiment, the pins 26 are provided on the vertical frames 4a, 4b, and the holes 27a are provided on the fireproof member 27. In this case, the same effect as that of the first embodiment can also be obtained.

Example 4

Fig. 7 is a sectional view showing an elevator landing door device according to Embodiment 4 of the present invention, and Fig. 8 is a perspective view showing the main part of Fig. 7 . A fireproof member 33 having a first facing surface 33a extending parallel to the opening and closing direction of the door 7 of the door 7 (the left-right direction in FIG. 7 ) is fixed to the upper portion of the door-opening side end of each door 7 of the door 7 .

Clips 32 as fixing members are fixed to the vertical frames 4a and 4b by welding. A vertical frame fire prevention member 31 having an L-shaped cross section is sandwiched between the clip 32 and the vertical frames 4a and 4b. The vertical frame fire prevention member 31 has the 2nd facing surface 31a parallel to the 1st facing surface 33a.

When installing the vertical frame fireproof member 31, first fix the clip 32 on the vertical frames 4a, 4b, and then push the vertical frame fireproof member 31 between the clip 32 and the vertical frames 4a, 4b. Claws are provided at the front end of the clip 32 , and grooves for inserting the claws are provided in the vertical frame fire prevention member 31 .

When the door is closed, the first facing surface 33a and the second facing surface 31a are made to face each other, so that the deformation of the door 7 of the landing toward the hoistway 5 side is restricted. That is, the fireproof member 33 has a portion bent into a U-groove shape, and when the door is closed, a part of the vertical frame fireproof member 31 is inserted into the U-groove. Other structures are the same as in Embodiment 1.

Adopt this entrance door device, since the first facing surface 33a and the second facing surface 31a are opposite when the door is closed, it is also possible to limit the movement of the door 7 of the entrance to the lifting road 5 side even when heated due to a fire. Deformation can prevent the door 7 of the entrance from coming out, and can prevent flame and smoke from flowing into the hoistway 5. And because the door fireproof member 33 and the longitudinal frame fireproof member 31 are only partially arranged and fixed on the door 7 of the entrance and the upper part of the longitudinal frame 4a, 4b, and only need to fix the clip 32 on the longitudinal frame 4a, 4b, the longitudinal frame is fireproofed. The member 31 is only required to be pushed in, so a fireproof structure can be easily added to the door 7 of a new or existing entrance.

Example 5

Fig. 8 is a sectional view showing an elevator landing door device according to Embodiment 5 of the present invention, and Fig. 9 is a perspective view showing the main part of Fig. 8 . A fireproof member 37 having a first facing surface 37a extending parallel to the opening and closing direction of the door 7 (the left-right direction in FIG. 9 ) is fixed to the upper portion of the door-opening side end of each door 7 of the door 7 .

A hook 35 as a fixing member is fixed to the vertical frames 4a, 4b by welding. A vertical frame fire prevention member 36 having an L-shaped cross section is attached to the vertical frames 4a and 4b via hooks 35 . The vertical frame fire prevention member 36 has the 2nd facing surface 36a parallel to the 1st facing surface 37a, and the hole 36b which the hook 35 can insert. As the hook 35, for example, a bolt can be used, and as the hole 36b, for example, a round hole can be used. FIG. 11 is an exploded perspective view showing FIG. 10 and the vertical frames 4a, 4b and the vertical frame fireproof member 36. FIG.

When the door is closed, by making the first facing surface 37a and the second facing surface 36a face each other, it is possible to restrict the deformation of the door 7 of the landing toward the liftway 5 side. That is, the fireproof member 37 has a portion bent into a U-shaped groove, and a part of the vertical frame fireproof member 36 is inserted into the U-groove when the door is closed. Other structures are the same as in Embodiment 1.

Adopt this entrance door device, because the first opposite surface 37a and the second opposite surface 36a are opposite when the door is closed, so even when heating due to a fire, it is also possible to limit the movement of the door 7 of the entrance to the liftway 5 side. Deformation can prevent the door 7 of the entrance from coming out, and can prevent flame and smoke from flowing into the hoistway 5. And because the door fireproof member 37 and the longitudinal frame fireproof member 36 are only partially configured and fixed on the door 7 of the entrance and the upper part of the longitudinal frames 4a, 4b, and only the clips 35 need to be fixed on the longitudinal frames 4a, 4b, the longitudinal frames are fireproofed. It is only necessary to lock the member 36, so a fireproof structure can be easily added to the door 7 of the new or existing entrance.

In the above example, only one clip 35 is provided, but two or more clips 35 may also be provided. Also, the number of holes 36b should correspond to that of the clip 35, and may be 2 or more.

Wherein, the upper and lower dimensions H of the fireproof members 22, 25, 27, 33, and 37 on the door 7 side of the entrance in the above-mentioned embodiments 1 to 5 are 1/3 or 1/3 of the vertical dimension H of the door 7 of the entrance. The following ones can also ensure sufficient fire performance. That is, even if the fire prevention members 22, 25, 27, 33, 37 are only arranged in the range of 1/3 or 1/3 of the up-and-down dimension of the entrance and exit 2 from the upper end of the entrance and exit 2, sufficient fire performance.

In the experiment, even if the fire prevention members 22, 25, 27, 33, 37 are only arranged in the range below 1/10 or 1/10 of the upper and lower dimensions of the entrance and exit 2 from the upper end of the entrance and exit 2 (the distance between the entrance and exit 2 The upper and lower dimensions: 2200mm; the upper and lower dimensions of the fireproof components: 200mm), sufficient fire performance can also be ensured.

Claims (7)

1. An elevator door device, comprising: a frame body having a vertically extending longitudinal frame and forming an entrance and exit; and The entrance door that opens and closes the entrance and exit of the entrance; It is characterized in that, A fireproof member facing the longitudinal frame when the door is closed is partially arranged and fixed on the upper part of the door-opening side end of the door of the entrance, A hole is provided on either side of the longitudinal frame and the fire protection member, An insertion portion is provided on the other side of the vertical frame and the fire prevention member, and the insertion portion is inserted into the hole when the door is closed, and restrains deformation of the door of the landing toward the hoistway side. 2. The entrance door device of an elevator according to claim 1, wherein the fire prevention member is arranged at 1/3 or 1/3 of the vertical dimension of the entrance from the upper end of the entrance. 1/3 or less. 3. The landing door device for an elevator according to claim 1, wherein the insertion portion is formed by bending a part of a fireproof member. 4. An elevator entrance door device, comprising: a frame body having a vertically extending longitudinal frame and forming an entrance and exit; and The entrance door that opens and closes the entrance and exit of the entrance; It is characterized in that, A door fireproof member having a first opposing surface extending parallel to the opening and closing direction of the door of the entrance is partially arranged and fixed on the upper part of the door opening side end of the door of the entrance, A fixing member is fixed on the longitudinal frame, and a longitudinal frame fire protection member is installed through the fixing member, The longitudinal frame fire protection member has a second facing surface, By making the first facing surface and the second facing surface face each other when the door is closed, deformation of the door of the landing toward the hoistway side is restricted. 5. The elevator landing door device according to claim 4, wherein the fixing member is a clip, and the vertical frame fireproof member is sandwiched between the clip and the vertical frame. 6. The elevator landing door device according to claim 4, wherein the fixing member is a hook, and a hole into which the hook can be inserted is provided in the vertical frame fire prevention member. 7. The elevator entrance door device according to claim 1, wherein the door fireproof member and the longitudinal frame fireproof member are arranged at the entrance of the entrance from the upper end of the entrance. within the range of 1/3 or less of the upper and lower dimensions of the

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