JP2009208908A - Elevator door device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a basic structure common regardless of the presence/absence of a surface plate, and to mount legs of a door with a simple structure by a nut retrofitting method. <P>SOLUTION: A door leg 9 is fixed at an opposite portion 11C by a leg fixing screw 13 and a leg fixing nut 14. The leg fixing nut is disposed between the opposite portion and a back surface of a door front surface portion 5a. The leg fixing screw penetrating the door leg 9 and the opposite portion from a hoistway side to be screwed in the leg fixing nut. At a position corresponding to the door leg 9 of the opposite portion, an insertion hole 11d in which the leg fixing screw is inserted is provided. At a position corresponding to the door leg 9 of a back surface joint portion 12b, a rectangular releasing portion 12c forming a space for storing the leg fixing nut between the opposite portion and the door front surface portion is provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator door device in which a reinforcing member is fixed to a lower end portion of a door panel.

  In a conventional elevator door device, a door leg is fixed to a reinforcing member fixed to a lower end portion of a door panel. A space is formed between the attachment portion of the door leg of the reinforcing member and the front portion of the door panel, and a nut is accommodated in this space. And the door leg is being fixed to the reinforcement member by screwing the bolt which penetrated the metal core and reinforcement member of the door leg to the nut (for example, refer to patent documents 1).

  The reinforcing member as described above is applied to a door device of a type in which the front portion of the door panel becomes a design surface as it is. On the other hand, in a door device that joins a front panel different from the door panel to the front part of the door panel, the thickness of the front panel is added to the dimension (P dimension) from the front of the door to the mounting surface of the door leg. . For this reason, if it is going to make P dimension the same, it is necessary to make the thickness dimension of the reinforcement member of the attachment part of a door leg small, and the space which accommodates a nut cannot be ensured with the above reinforcement members. . Therefore, in this type of door device, a mounting plate provided with a screw hole is welded to the reinforcing member, and a bolt for fixing a door leg is screwed into the screw hole of the mounting plate.

Japanese Utility Model Publication No. 3-16872

  In the conventional door device as described above, it is necessary to prepare two types of reinforcing members having completely different structures depending on the presence or absence of a front plate. In the former type door device, the cross-sectional shape of the reinforcing member is complicated to form a space for accommodating the nut, and a dedicated die for manufacturing the reinforcing member is required. In the latter type of door device, paint may enter the screw holes during painting, and it may be difficult to screw the bolts. Furthermore, distortion occurs when the mounting plate is welded to the reinforcing member, and quality deterioration such as tilting of the door legs occurs.

  The present invention has been made to solve the above-described problems, and can share the basic structure of the reinforcing member regardless of the presence or absence of the front plate. It is an object of the present invention to obtain an elevator door device to which a door leg can be attached by a retrofitting method.

  An elevator door device according to the present invention includes a door panel having a door front portion and a pair of folded portions formed by folding back both widthwise end portions of the door front portion, and a first end portion fixed to the folded portion. A fixed portion, an intermediate portion formed by bending the lower end portion of the first fixed portion to the door front portion side, and a facing portion facing the rear surface of the door front portion by bending the door front end portion of the intermediate portion downward. A first reinforcing member provided at a lower end portion of the door panel along the width direction of the door panel, a second fixing portion fixed to the upper surface of the intermediate portion, and a door front surface of the second fixing portion A second joint provided at the lower end portion of the door panel along the width direction of the door panel. Fixed to the opposite side of the front of the door A leg fixing screw for fixing the door leg to the first reinforcing member, and a leg fixing nut to which the leg fixing screw is screwed, at a position corresponding to the door leg of the facing portion. Is provided with an insertion hole through which the leg fixing screw is inserted, and a space for accommodating the leg fixing nut is formed between the facing part and the door front part at a position corresponding to the door leg of the rear joint part. An escape portion is provided.

  The elevator door device according to the present invention combines the first and second reinforcing members having a simple structure, and provides a relief portion at the back joint portion of the second reinforcing member, thereby opposing the space for accommodating the leg fixing nut. Since it is formed between the front part of the door and the front part of the door, the basic structure of the reinforcing member can be shared regardless of the presence or absence of the front plate. Can be attached.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view of an elevator landing door device according to Embodiment 1 of the present invention as seen from the hoistway side, and FIG. 2 is a side view of the landing door device of FIG. In the figure, a three-way frame 1 is fixed to both sides and an upper part of the landing entrance. A landing threshold 2 is fixed to the floor of the landing entrance. Further, a rail support member 3 is fixed above the three-way frame 1. A door rail 4 is fixed to the rail support member 3.

  The hall entrance is opened and closed by a pair of metal door panels 5. A door hanger 6 is fixed to the upper part of each door panel 5. The door panel 5 is suspended from the door rail 4 via a door hanger 6. Each door hanger 6 is provided with a pair of hanger rollers 7. The hanger roller 7 is rolled on the door rail 4 as the door panel 5 opens and closes.

  A lower reinforcing device 8 is fixed to the lower end of each door panel 5. A pair of door legs 9 is fixed to each lower reinforcing device 8. The lower end of the door leg 9 is inserted into the sill groove of the landing sill 2. In addition, a plurality of smoke shielding members 10 are fixed to each lower reinforcing device 8. The smoke shielding member 10 shields the gap between the lower end of the door panel 5 and the upper surface of the landing sill 2 and prevents smoke from entering the hoistway from the landing.

  3 is a cross-sectional view taken along line III-III in FIG. 1, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. The door panel 5 includes a door front portion 5a and a pair of folded portions 5b formed by folding both end portions in the width direction of the door front portion 5a to the hoistway side in a U-shaped cross section. In this example, the surface on the landing side of the door front portion 5a is a design surface. Moreover, the lower end part of the door front part 5a is bent at right angles to the hoistway side.

  The lower reinforcing device 8 includes a first reinforcing member 11 having a Z-shaped cross section and a second reinforcing member 12 having an L-shaped cross section. The first and second reinforcing members 11 and 12 are provided at the lower end portion of the door panel 5 along the width direction of the door panel 5. Moreover, the 1st and 2nd reinforcement members 11 and 12 are produced by bending a metal plate.

  The first reinforcing member 11 includes a flat plate-shaped (band-shaped) first fixing portion 11a and a flat plate-shaped (band-shaped) intermediate portion formed by bending the lower end portion of the first fixing portion 11a to the door front surface portion 5a at a right angle. It has a portion 11b and a flat plate-like (band-shaped) facing portion 11c formed by bending the end portion of the intermediate portion 11b on the door front portion 5a side downward at a right angle.

  Both end portions of the first fixing portion 11a are joined to the surface of the folded portion 5b on the door front portion 5a side, and are fixed to the folded portion 5b by rivets or the like. The facing portion 11c faces the back surface (the hoistway side surface) of the door front portion 5a. The lower end portion of the facing portion 11c is bent at a right angle toward the door front surface portion 5a and overlapped on the lower end portion of the door front surface portion 5a.

  The second reinforcing member 12 has a flat plate-like (band-like) second fixing portion 12a and a flat plate-like (band-like) formed by bending the end portion on the door front surface 5a side of the second fixing portion 12a at a right angle downward. And a back joint portion 12b.

  The second fixing portion 12a is fixed to the upper surface of the intermediate portion 11b by, for example, spot welding or an adhesive. The second reinforcing member 12 is fixed to the first reinforcing member 11 before fixing the first reinforcing member 11 to the door panel 5. The back joint portion 12b is joined to the back surface of the door front portion 5a and is fixed by an adhesive or the like. The lower end part of the back surface joining part 12b is bent to the opposite side to the door front part 5a and joined to the facing part 11c.

  The door leg 9 and the smoke shielding member 10 are fixed to a surface of the facing portion 11c opposite to the door front portion 5a. The door leg 9 is fixed to the facing portion 11 c by a leg fixing screw (bolt) 13 and a leg fixing nut 14. The leg fixing nut 14 is disposed between the facing portion 11c and the back surface of the door front portion 5a. The leg fixing screw 13 is screwed to the leg fixing nut 14 through the door leg 9 and the facing portion 11c from the hoistway side.

  An insertion hole 11d through which the leg fixing screw 13 is inserted is provided at a position corresponding to the leg 9 of the door of the facing portion 11c. At a position corresponding to the door leg 9 of the back joint portion 12b, there is a rectangular relief portion (notch portion) 12c that forms a space for accommodating the leg fixing nut 14 between the facing portion 11c and the door front portion 5a. Is provided.

  The leg fixing nut 14 is fixed to one end of the U-shaped metal fitting 15. An opening 11e through which one end of the U-shaped metal fitting 15 and the leg fixing nut 14 are passed is provided above the insertion hole 11d of the facing portion 11c.

  Next, FIG. 5 is a cross-sectional view showing an example in which the lower reinforcing device 8 of the first embodiment is applied to a landing door device of a type different from that in FIG. 4, and shows a state before the door legs 9 are mounted. Yes. In the figure, a front plate 16 is joined to the door front portion 5a. Therefore, in this example, the surface on the landing side of the front plate 16 is a design surface.

  The lower reinforcing device 8 includes a first reinforcing member 21 having a Z-shaped cross section and a second reinforcing member 22 having an L-shaped cross section. The first reinforcing member 21 has a first fixing portion 21a, an intermediate portion 21b, and a facing portion 21c, similarly to the first reinforcing member 11 of FIG. The opposed portion 21c is provided with an insertion hole 21d and an opening 21e.

  Similar to the second reinforcing member 12 of FIG. 4, the second reinforcing member 22 includes a second fixing portion 22a and a back joint portion 22b. And the escape part 22c is provided in the back surface junction part 22b. Further, in this type of landing door device, the thickness dimension of the front plate 16 is added to the dimension (P dimension) from the front of the door to the mounting surface of the leg 9 of the door. For this reason, the lower end portion of the back surface joining portion 22b is not bent and remains linear, and the entire back surface joining portion 22b is joined to the facing portion 21c, so that the P dimension is the same as in FIG. Other configurations are the same as those in FIG.

  In such a landing door device, the first and second reinforcing members 11, 12, 21, and 22 having a simple structure are combined, and the relief portions 12 c and 12 b are connected to the rear joint portions 12 b and 22 b of the second reinforcing members 12 and 22. Since the space for accommodating the leg fixing nut 14 is formed between the facing portions 11c, 21c and the door front surface portion 5a by providing 22c, the reinforcing members 11, 12, The basic structure of 21 and 22 can be made common.

  The first and second reinforcing members 11, 12, 21, and 22 have dimensions (width, height, thickness, etc.) and rear joints 12b and 22b according to the opening / closing method, the size of the landing doorway, and the like. A plurality of sets having different bottom end bent portions are prepared, but all of them can be handled with the same basic structure.

  As described above, since the first and second reinforcing members 11, 12, 21, and 22 having simple shapes are used, it is not necessary to use a dedicated type, and the cost can be reduced. Moreover, strength can be improved by setting it as the box-shaped structure or laminated structure which combined the 1st reinforcement members 11 and 21 and the 2nd reinforcement members 21 and 22. FIG.

  Further, the door leg 9 can be attached by a nut retrofitting method using a special nut, a POP nut or the like with a simple structure. Therefore, it is possible to prevent the paint from entering the screw hole during painting, and the leg fixing screw 13 can be smoothly screwed to the leg fixing nut 14. Moreover, since the welding to the door panel 5 is unnecessary, the door leg 9 does not tilt due to welding distortion, and the quality can be stabilized.

  Furthermore, also when performing the repair work which replaces the door panel 5 with the three-way frame 1 and the landing sill 2 left, the necessary P dimension can be easily obtained by the lower reinforcing device 8 having a common structure.

Although the landing door device is shown in the above example, the present invention can also be applied to a car door device.
In the above example, the center opening type door device is shown, but the present invention can also be applied to a single opening type door device.
Further, the number of door panels 5 may be one or three or more.
Furthermore, the number of door legs 9 is not particularly limited.
In the above example, the smoke shielding member 10 is used. However, the present invention can also be applied to a door device that does not use the smoke shielding member 10.

It is the front view which looked at the landing door apparatus of the elevator by Embodiment 1 of this invention from the hoistway side. It is a side view which shows the landing door apparatus of FIG. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing which shows the example which applied the lower reinforcement apparatus of Embodiment 1 to the landing door apparatus of a different type from FIG.

Explanation of symbols

  5 door panel, 5a door front part, 5b folded part, 9 door legs, 11, 21 first reinforcing member, 11a, 21a first fixing part, 11b, 21b intermediate part, 11c, 21c facing part, 11d, 21d Insertion hole, 12, 22 2nd reinforcement member, 12a, 22a 2nd fixing | fixed part, 12b, 22b Back surface joining part, 12c, 22c Relief part, 13 leg fixing screw, 14 leg fixing nut.

Claims (1)

A door panel having a door front portion and a pair of folded portions formed by folding both end portions in the width direction of the door front portion;
A first fixed portion having both ends fixed to the folded portion, an intermediate portion formed by bending the lower end portion of the first fixed portion toward the door front portion, and the door front portion side end of the intermediate portion A first reinforcing member that is provided at the lower end of the door panel along the width direction of the door panel,
A second fixed portion fixed to the upper surface of the intermediate portion, and a back surface which is joined and fixed to the rear surface of the door front portion by bending the end portion on the door front portion side of the second fixed portion downward. A second reinforcing member having a joint portion and provided at a lower end portion of the door panel along the width direction of the door panel,
The door leg fixed to the opposite side of the door front portion of the facing portion,
A leg fixing screw for fixing the leg of the door to the first reinforcing member; and a leg fixing nut to which the leg fixing screw is screwed.
An insertion hole through which the leg fixing screw is inserted is provided at a position corresponding to the leg of the door of the facing portion,
An escape portion that forms a space for accommodating the leg fixing nut between the facing portion and the door front portion is provided at a position corresponding to the leg of the door of the back joint portion. Elevator door device.

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