JP6925161B2 - Smoke shield airtight material cutter - Google Patents

Description

The present invention relates to a smoke-shielding airtight material cutter, particularly a smoke-shielding airtight material cutter that is replaceably attached to an elevator door.

Due to the revision of the Building Standards Law, it is obligatory to install fire protection equipment with flame insulation performance and smoke insulation performance in the fire protection section of the elevator hoistway. As a means of responding to this revision of the law, an airtight material is attached to the frame of the landing door to seal the gap between the landing door and the three-sided frame of the landing and the floor surface, thereby causing a fire on any floor of the building. Even if a fire occurs, it is possible to prevent smoke from the fire source from flowing into other floors through the hoistway.

Since the airtight material is a consumable item formed by molding ethylene propylene rubber, it is replaced regularly based on its useful life. For example, the airtight material attached to the bottom of the landing door is replaced in about 3 years, and in the case of a luggage elevator, it is replaced in about 2 years.

Workers replace the airtight material on site. Specifically, although it depends on the mounting position of the airtight material to be replaced, bring in an airtight material (molded product) with a length of about 1 m to several m and a commercially available cutter or scissors as a cutting tool for the airtight material. , When exchanging the airtight material, the worker cuts the airtight material to the required length on the spot, so-called on-site processing is carried out.

However, since the airtight material made of ethylene propylene rubber is not hard, it is difficult to accurately cut it to an appropriate length with a commercially available cutter or scissors. In addition, depending on the skill of the worker, the cut surface may be jagged.

An object of the present invention is to provide a smoke-shielding airtight material cutter capable of cutting an airtight material so that an appropriate airtight material can be formed.

The smoke-shielding airtight material cutter according to the present invention is a smoke-shielding airtight material that is replaceably attached to the door of an elevator and is formed by cutting a long airtight material to a desired length. In the airtight material cutter, a groove whose shape matches a part of the outer shape of the airtight material is formed in a direction orthogonal to the direction in which the airtight material is cut , and one end is rotated around the base. It is movably pivotally supported and includes a blade that cuts the airtight material material fitted in the groove by swinging down the other end side, and the groove is formed from a relatively thick portion of the airtight material material. It is characterized in that it is formed on the base so as to be cut first.

Further, the base is characterized in that a plurality of the grooves are formed in parallel so that the plurality of the airtight material can be cut at the same time.

Further, it is characterized by including an adjusting mechanism for adjusting the length of the airtight material to be formed.

Further, the adjusting mechanism is characterized in that when a plurality of the grooves are formed in parallel on the base, the adjusting mechanism is commonly provided in the plurality of the grooves.

Further, the adjusting mechanism is characterized in that it is provided corresponding to each of the plurality of grooves formed in the base.

According to the present invention, the airtight material can be cut so that an appropriate airtight material can be formed.

In addition, a plurality of airtight materials can be efficiently formed.

In addition, an airtight material having a desired length can be easily formed.

Further, a plurality of airtight materials having the same length can be formed at the same time.

In addition, airtight materials having different lengths can be formed by one cutting.

It is a perspective view which shows the smoke-shielding airtight material cutter in Embodiment 1. FIG. It is a side sectional view at the time of cutting with the blade receiving portion of the smoke-shielding airtight material cutter shown in FIG. It is a top view when the airtight material material is placed on the smoke-shielding airtight material cutter shown in FIG. It is an external view of the airtight material. It is a side view of a landing door with an airtight material attached. It is a perspective view which shows the main part of the smoke-shielding airtight material cutter in Embodiment 2. It is a perspective view which shows the main part of the smoke-shielding airtight material cutter in Embodiment 3.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.
FIG. 1 is a perspective view showing an embodiment of a smoke-shielding airtight material cutter according to the present invention, and FIG. 2 is a side sectional view when the blade of the smoke-shielding airtight material cutter shown in FIG. 1 is cut at a blade receiving portion. FIG. 3 is a plan view when the airtight material is placed on the smoke-shielding airtight material cutter shown in FIG. Further, FIG. 4 is an external view of the airtight material, and FIG. 5 is a side view of the landing door with the airtight material attached. Hereinafter, the structure of the smoke-shielding airtight material cutter in the present embodiment will be described with reference to these figures.

The airtight material in the present embodiment is formed by cutting the airtight material material 1 of the molded product shown in FIG. That is, when exchanging the airtight material, the worker brings the airtight material material having a length of about 1 m to several m and the smoke-shielding airtight material cutter in the present embodiment to the site to replace the airtight material. At the time of this, the worker cuts the airtight material material 1 to a desired length on the spot to form the airtight material.

FIG. 5 shows an airtight material 2, a landing door 3, and a shoe 5 for smoothly sliding the landing door 3 along the threshold 4. As shown in FIG. 5, the formed airtight material 2 is attached to the landing door 3 by fitting the recess of the airtight material 2 into the attachment portion 6 provided with the shoe 5. The right side of the drawing is the hoistway side, and the left side of the drawing is the landing side. Smoke can be shielded so that it does not flow into the landing side.

The smoke-shielding airtight material cutter 10 in the present embodiment includes a base 11, a blade 12 pivotally supported by the base 11 and rotatably attached, and a stopper 13. A mounting groove 14 for the airtight material 1 is formed in the central portion of the base 11 along a direction orthogonal to the blade 12 (blade receiving groove 15). The mounting groove 14 is formed as a part of the outer shape of the airtight material material 1, in the case of the present embodiment, as a groove having a shape that matches the shape of the surface on the surface 1a side shown in FIG. As a result, when the airtight material 1 is placed in a predetermined direction, it is firmly fitted into the mounting groove 14.

The corner of the upper surface parallel to the mounting groove 14 of the base 11 is notched, and by engaging with the claws 13a formed at both ends of the stopper 13 in this portion, the stopper 13 can press the upper surface of the base 11. It is attached so that it can move stably in the direction orthogonal to the blade 12. Screw holes that reach the upper surface of the base 11 are formed at two locations of the stopper 13, and the stopper 13 is fixed and positioned on the base 11 by tightening the screws 13b screwed into the screw holes. .. If the screw 13b is loosened, it can slide on the base 11. On the lower surface of the stopper 13, a stopper plate 13c having a size that allows the stopper 13 to enter the mounting groove 14 is formed.

Further, on the upper surface of the base 11, a blade receiving groove 15 into which the blade 12 enters by cutting is provided, and the stopper 13 is further provided from the position of the blade receiving groove 15 so that the length of the airtight material 2 formed by cutting can be known. The scale 16 is printed in the direction.

Next, the operation of the smoke-shielding airtight material cutter 10 in the present embodiment will be described.

When exchanging the airtight material 2, the worker adjusts the position of the stopper 13 so that the airtight material 2 can be formed with a desired length while referring to the scale 16. In this way, the stopper 13 acts as an adjusting mechanism for adjusting the length of the airtight material 2 to be formed. Then, the screw 13b is tightened so that the position of the stopper 13 does not move. After that, the worker places the airtight material 1 on the base 11 so as to fit in the mounting groove 14. At this time, one end of the airtight material 1 is placed so as to be in contact with the stop plate 13c of the stopper 13.

From the above, the stop plate 13c prevents the airtight material 1 placed in the mounting groove 14 from going beyond the position of the stopper 13 on the opposite side of the blade 12, that is, on the left side of the drawing in FIG. It is clear that it is a member for. That is, the stop plate 13c may be sized and shaped so that the airtight material 1 does not enter the gap between the mounting groove 14 and the stop plate 13c. Therefore, the cross section of the stop plate 13c may be the same as the shape of the mounting groove 14, but in the present embodiment, the stop plate 13c is made into a bowl shape that can be easily formed.

When the airtight material 1 is fitted into the mounting groove 14 as described above, the worker cuts the airtight material 1 by swinging the handle 12a of the blade 12 down in the direction of the arrow A as shown in FIG. do.

Since the airtight material 1 is firmly fitted into the mounting groove 14 and gripped, the cut surface is not jagged and is cut in a smooth state. It should be noted that the airtight material material is held down along the blade receiving groove 15 on the stopper 13 side of the blade receiving groove 15 so as to further facilitate cutting and to prevent the finger holding the airtight material material 1 from being accidentally cut (cutting guard). ) May be provided.

Due to the shape of the airtight material material 1, it is cut from the root side, which is in contact with the shoe 5 and the floor surface 7, and which is engaged with the mounting portion 6, not the fin side, which is relatively thin in thickness. Is considered to be suitable. Therefore, in the present embodiment, the mounting groove 14 is formed so that the root side is on the rotation shaft side where the blade 12 is attached to the base 11. Further, the mounting groove 14 is formed so that the cutting depth (depth of the mounting groove 14) is as short as possible. Of course, the shape of the mounting groove 14 is not limited to this, as long as the airtight material 1 can be cut to have a desired appropriate length and the cut surface is smooth without being jagged.

Further, in the present embodiment, the case where the long blade 12 is used has been described as an example, but it may be formed by a disc cutter (rotary cutter).

The above-mentioned modification can also be applied to the embodiment described later.

Embodiment 2.
FIG. 6 is a perspective view showing a main part of a smoke-shielding airtight material cutter according to the present embodiment. The blade portion and the like omitted in FIG. 6 may be the same as those in the first embodiment. The smoke-shielding airtight material cutter 10 in the present embodiment is characterized in that two mounting grooves 14a and 14b are formed in parallel on the base 11. As a result, the two airtight material 1 can be cut by swinging down the blade 12 once. That is, two airtight materials 2 can be formed by one cutting.

In particular, in the present embodiment, the lengths of the two airtight materials 2 can be adjusted by one stopper 13. That is, the airtight material 2 having the same length can be formed by cutting once.

Further, when configured as in the present embodiment, an existing airtight material to be replaced (hereinafter, “pre-replacement airtight material”) is placed in one of the mounting grooves (here, the mounting groove 14a). The stopper 13 is aligned so that the airtight material 1 can be cut by the length of the airtight material before replacement. Then, the airtight material 1 is placed in the other mounting groove (here, the mounting groove 14b). By setting the airtight material 1 and cutting it in this way, it is possible to easily form the airtight material 2 having the same length as the airtight material before replacement. By adopting such a cutting method, it is possible to replace the airtight material 2 without knowing the length (dimensions) of the airtight material 2 to be formed.

Embodiment 3.
FIG. 7 is a perspective view showing a main part of the smoke-shielding airtight material cutter according to the present embodiment. The blade portion and the like omitted in FIG. 7 may be the same as those in the first embodiment. The smoke-shielding airtight material cutter 10 in the present embodiment has two mounting grooves 14a and 14b formed in parallel on the base 11 as in the second embodiment, but is characteristic of the present embodiment. That is, the stoppers 17 and 18 are provided corresponding to the mounting grooves 14a and 14b, respectively. The structures of the stoppers 17 and 18 may be the same as those of the stopper 13 in the first embodiment. That is, by engaging the claws 17a and 18a provided at both ends of the stoppers 17 and 18 with the notch portion of the base 11 and the slide groove 19, the stoppers 17 and 18 have a blade on the upper surface of the base 11. It is attached so that it can be moved stably in the direction orthogonal to 12. Further, the stoppers 17 and 18 are fixed to the base 11 by tightening the screws 17b and 18b, respectively.
In the present embodiment, the two airtight material 1 can be cut by swinging down the blade 12 once by the above configuration, but in the case of the present embodiment, the two airtight material 1 can be cut once. By cutting, two airtight materials 2 having different lengths can be formed.

In this embodiment, the airtight material 2 attached to the lower part of the landing door 3 has been described as an example. However, by matching the shape of the mounting groove 14 with the surface shape of the airtight material to be cut, the upper part, the side surface, and the like It can also be applied to cutting airtight materials attached to other positions. Further, it can be applied not only to the door of an elevator but also to the formation of an airtight material to be attached to another building such as a window.

1 Airtight material, 2 Airtight material, 3 Landing door, 4 Shikii, 5 Shoe, 6 Mounting part, 7 Floor surface, 10 Smoke-proof airtight material cutter, 11 base, 12 blades, 12a handle, 13, 17, 18 stopper , 13a, 17a, 18a claws, 13b, 17b, 18b screws, 13c stop plate, 14, 14a, 14b mounting grooves, 15 blade receiving grooves, 19 slide grooves.

Claims (5)

In an airtight material cutter that is a smoke-shielding airtight material that is replaceably attached to an elevator door and is formed by cutting a long airtight material to a desired length.
A base in which a groove whose shape matches a part of the outer shape of the airtight material is formed in a direction orthogonal to the direction in which the airtight material is cut.
A blade that rotatably supports one end of the base and swings down the other end to cut the airtight material material fitted in the groove.
Equipped with a,
A smoke-shielding airtight material cutter , wherein the groove is formed in the base so that a relatively thick portion of the airtight material material is cut first. A plurality of the grooves are formed in parallel on the base.
The smoke-shielding airtight material cutter according to claim 1, wherein a plurality of the airtight material materials can be cut at the same time. The smoke-shielding airtight material cutter according to claim 1, further comprising an adjusting mechanism for adjusting the length of the airtight material to be formed. The smoke-shielding airtight material cutter according to claim 3, wherein the adjusting mechanism is commonly provided in the plurality of the grooves when the plurality of the grooves are formed in parallel on the base. The smoke-shielding airtight material cutter according to claim 3, wherein the adjusting mechanism is provided corresponding to each of the plurality of grooves formed in the base.

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