EP1857400A1

EP1857400A1 - Three-sided frame for elevator

Info

Publication number: EP1857400A1
Application number: EP06714078A
Authority: EP
Inventors: Takao Watanabe
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-03-08
Filing date: 2006-02-20
Publication date: 2007-11-21
Also published as: WO2006095562A1; EP1857400A4; JP2006248632A; KR20070088456A; CN1968887A

Abstract

A jamb for an elevator has a back board fixed to an edge of a landing doorway, and a front board removably mounted on the back board. The front board is mounted on the back board, so a cylinder is formed. The front board has a front board body for surrounding a space between the back board and the front board except an opening facing a hoistway, and a sheathing board removably mounted on the back board and the front board body so as to close the opening.

Description

Technical Field

The present invention relates to a jamb for an elevator, which is mounted on a landing doorway of the elevator.

Background Art

In a conventional apparatus, a jamb is disposed inside a landing doorway. The jamb has an upper frame and a pair of vertical frames. Each of the frames has a C-shaped cross-section which opens on an architectural wall side. A plurality of joint boards are mounted on each of the frames on the architectural wall side thereof. Respective openings of the frames are closed by the joint boards at predetermined intervals. The joint boards are connected to the architectural wall by means of mounting brackets, so the respective frames of the jamb are fixed to edges of the landing doorway. A gap between the frame of the jamb and each of the edges of the landing doorway, and an interior of the jamb are filled with a fireproof material such as mortar with a view to closing the gap and improving a fireproof property of the jamb (e.g., see Patent Document 1).
Patent Document 1: JP 2002-211860 A

Disclosure of the Invention

Problem to be solved by the Invention

The interior of the conventional jamb for the elevator constructed as described above is filled with the fireproof material. Therefore, even in attempting to replace the jamb because of, for example, a repair work of a building, the jamb cannot be removed separately, so the architectural wall around the landing doorway needs to be dismantled as well. As a result, enormous labor and immeasurable costs are required.
The present invention has been made to solve the above-mentioned problem, and it is therefore an obj ect of the present invention to obtain a jamb for an elevator, which allows a front board thereof to be replaced more easily while maintaining the fireproof property of the jamb.

Means for solving the Problems

A jamb for an elevator according to the present invention includes: a back board fixed to an edge of a landing doorway; and a front board removably mounted on the back board, for forming a cylinder together with the back board by being mounted on the back board.

Brief Description of the Drawings

[Fig. 1] Fig. 1 is a front view showing a jamb for an elevator according to Embodiment 1 of the present invention.
[Fig. 2] Fig. 2 is a perspective view showing one of fixing brackets of Fig. 1 on an enlarged scale.
[Fig. 3] Fig. 3 is a back view showing one of vertical frames of Fig. 1.
[Fig. 4] Fig. 4 is a plan view showing the vertical frame of Fig. 3.
[Fig. 5] Fig. 5 is a cross-sectional view showing a state of one of the vertical frames of Fig. 1 after completion of surface finish of an architectural wall.
[Fig. 6] Fig. 6 is a plan view showing the vertical frame of Fig. 4 in an exploded manner.
[Fig. 7] Fig. 7 is an explanatory view showing a state in which a vertical frame back board and a vertical frame front board body of Fig. 6 are fixed to one of lateral edges of a landing doorway.
[Fig. 8] Fig. 8 is a cross-sectional view showing a state of an upper frame of Fig. 1 after the completion of surface finish of the architectural wall.

Best Mode for carrying out the Invention

A preferred embodiment of the present invention will be described hereinafter with reference to the drawings.

Embodiment 1

Fig. 1 is a front view showing a state of a jamb for an elevator according to Embodiment 1 of the present invention before completion of surface finish of an architectural wall. In the figure, an architectural wall 1 is provided with a landing doorway 2. A jamb 3 is disposed inside the landing doorway 2. The jamb 3 has an upper frame 3a disposed on an upper edge of the landing doorway 2, and a pair of vertical frames 3b disposed on lateral edges of the landing doorway 2, respectively.
A plurality of bracket fixing anchor bolts (foundation bolts) 2a are fixed to an inner wall of the landing doorway 2. Respective frames of the jamb 3 are fixed to the edges of the landing doorway 2 via a plurality of fixing brackets 6 fixed to the bracket fixing anchor bolts 2a.
Next, Fig. 2 is a perspective view showing one of the fixing brackets 6 of Fig. 1 on an enlarged scale. In the figure, the fixing bracket 6 is constructed by bending a steel plate into a U-shaped cross-section. The fixing bracket 6 is provided with an architectural wall fixing portion 8 and a jamb fixing portion 9. The architectural wall fixing portion 8 is provided with a bracket fixing long hole 8a. A jamb fixing stud bolt 9a is fixed to the jamb fixing portion 9.
A corresponding one of the bracket fixing anchor bolts 2a is inserted into the bracket fixing long hole 8a. The fixing bracket 6 is fixed to a corresponding one of the edges of the landing doorway 2 by screwing a nut onto the bracket fixing anchor bolt 2a inserted into the bracket fixing long hole 8a.
The fixing bracket 6 is fixed to a corresponding one of the lateral edges of the landing doorway 2 such that a longitudinal direction of the bracket fixing long hole 8a extends along a height direction of the landing doorway 2. That is, the mounting position of the fixing bracket 6 on the lateral edge of the landing doorway 2 is adjustable in the height direction of the landing doorway 2 by a length of the bracket fixing long hole 8a in the longitudinal direction thereof. Further, another one of the fixing brackets 6 is fixed to the upper edge of the landing doorway 2 such that the longitudinal direction of the bracket fixing long hole 8a extends along a width direction of the landing doorway 2. That is, the mounting position of the fixing bracket 6 on the upper edge of the landing doorway 2 is adjustable in the width direction of the landing doorway 2 by the length of the bracket fixing long hole 8a in the longitudinal direction thereof.
Next, Fig. 3 is a back view showing one of the vertical frames 3b of Fig. 1. Fig. 4 is a plan view showing the vertical frame 3b of Fig. 3. In the figures, the vertical frame 3b is constructed by combining a plurality of board members. That is, the vertical frame 3b has a vertical frame back board 10 disposed along a corresponding one of the lateral edges of the landing doorway 2, and a vertical frame front board 5 removably mounted on the vertical frame back board 10 by means of a plurality of bolts and nuts. The vertical frame 3b is formed in a cylindrical shape (box-body structure) by the vertical frame back board 10 and the vertical frame front board 5. A space 11e for a mounting operation is provided inside the vertical frame 3b.
The vertical frame front board 5 has a vertical frame front board body 11 for surrounding the space 11e for the mounting operation except an opening facing a hoistway, and a sheathing board 12 removably mounted on the vertical frame back board 10 and the vertical frame front board body 11 so as to close the opening facing the hoistway. A mounting portion of the vertical frame front board body 11 mounted on the vertical frame back board 10 is disposed within the space 11e for the mounting operation.
A plurality of back board fixing long holes 15, which are arranged at equal intervals, are provided in the vertical frame back board 10. The jamb fixing stud bolts 9a are each inserted into each of the back board fixing long holes 15. Nuts are each screwed onto each of the jamb fixing stud bolts 9a inserted into the back board fixing long holes 15, so the vertical frame back board 10 is fixed to corresponding ones of the fixing brackets 6.
Next, Fig. 5 is a cross-sectional view showing a state of one of the vertical frames 3b of Fig. 1 after the completion of surface finish of the architectural wall 1. In the figure, the vertical frame back board 10 is fixed to the inner wall of the landing doorway 2 via the corresponding one of the fixing brackets 6. Each of the back board fixing long holes 15 is disposed such that a longitudinal direction thereof extends along a depth direction of the landing doorway 2. That is, the mounting position of the vertical frame back board 10 is adjustable in the depth direction of the landing doorway 2 by a length of each of the back board fixing long holes 15 in the longitudinal direction thereof.
When the vertical frame back board 10 is fixed to the corresponding one of the lateral edges of the landing doorway 2, there is a void 6a resulting from the fixing bracket 6 between the vertical frame back board 10 and the lateral edge of the landing doorway 2. The void 6a is filled with a fireproof material 13 such as mortar from a landing side. The void 6a is closed on a hoistway side thereof by one end of the vertical frame back board 10. A shaping plate 14 for shaping the fireproof material 13 is installed on the landing side of the void 6a, which is filled with the fireproof material 13. The fireproof material 13 is shaped in filling up the void 6a, and the vertical frame front board 5 is mounted on the vertical frame back board 10. As a result, the surface of the architectural wall 1 is finished.
A plurality of sheathing board fixing anchor bolts 25 are fixed to the architectural wall 1 on the hoistway side thereof. Nuts are each screwed onto each of the sheathing board fixing anchor bolts 25, so the sheathing board 12 is fixed to the architectural wall 1.
Next, Fig. 6 is a plan view showing the vertical frame 3b of Fig. 4 in an exploded manner. In the figure, the vertical frame back board 10 is constructed by bending a steel plate into a cranked cross-section. The vertical frame back board 10 has a backboard-side fixing bracket joint portion 10a in which the back board fixing long holes 15 are provided, a back board-side front board joint portion 10b joined to the vertical frame front board body 11, and a back board-side sheathing board joint portion 10c joined to the sheathing board 12.
The back board-side front board joint portion 10b is located on the other side of the inner wall of the landing doorway 2 with respect to the back board-side fixing bracket joint portion 10a. A plurality of front board fixing stud bolts 16, which are used in fixing the vertical frame front board body 11 to the vertical frame back board 10, are fixed to the back board-side front board joint portion 10b.
The back board-side sheathing board joint portion 10c is disposed perpendicularly to the back board-side fixing bracket joint portion 10a and the back board-side front board joint portion 10b. The back board-side sheathing board joint portion 10c closes the void 6a on a hoistway side of the back board-side sheathing board joint portion 10c when the vertical frame back board 10 is fixed to the lateral edge of the landing doorway 2. A plurality of first sheathing board fixing stud bolts 17, which are used for fixing the sheathing board 12 to the vertical frame back board 10, are fixed to the back board-side sheathing board joint portion 10c.
The vertical frame front board body 11 is constructed by bending a steel plate into a generally C-shaped cross-section. The vertical frame front board body 11 has a front board-side back board joint portion 11a joined to the vertical frame back board 10, and a front board-side sheathing board joint portion 11b joined to the sheathing board 12. The front board-side back board joint portion 11a and the front board-side sheathing board joint portion 11b are folded portions of ends of the steel plate. The front board-side back board joint portion 11a is provided in parallel to the front board-side sheathing board joint portion 11b.
A plurality of front board mounting holes, into each of which each of the front board fixing stud bolts 16 is inserted, are provided in the front board-side back board joint portion 11a. Nuts are each screwed onto each of the front board fixing stud bolts 16 inserted into the front board mounting holes, so the vertical frame front board body 11 is fixed to the vertical frame back board 10. That is, the vertical frame front board body 11 is removably mounted on the vertical frame back board 10.
A plurality of second sheathing board fixing stud bolts 19, which are used for fixing the sheathing board 12 to the vertical frame front board body 11, are fixed to the front board-side sheathing board joint portion 11b.
The sheathing board 12 is constructed by bending a steel plate into an L-shaped cross-section. The sheathing board 12 has a sheathing board-side front board joint portion 12a joined to the vertical frame front board body 11, a sheathing board-side back board joint portion 12b joined to the vertical frame back board 10, and a sheathing board-side architectural wall joint portion 12c joined to the architectural wall 1. The sheathing board-side back board joint portion 12b and the sheathing board-side architectural wall joint portion 12c are provided on one side of the L-shaped steel plate. The sheathing board-side front board joint portion 12a is perpendicular to the sheathing board-side back board joint portion 12b and the sheathing board-side architectural wall joint portion 12c.
A plurality of first sheathing board mounting holes, into each of which each of the second sheathing board fixing stud bolts 19 is inserted, are provided in the sheathing board-side front board joint portion 12a. A plurality of second sheathing board mounting holes, into each of which each of the first sheathing board fixing stud bolts 17 is inserted, are provided in the sheathing board-side back board joint portion 12b. A plurality of third sheathing board mounting holes, into each of which each of the sheathing board fixing anchor bolts 25 is inserted, are provided in the sheathing board-side architectural wall joint portion 12c. That is, the sheathing board 12 is removably mounted on the vertical frame back board 10, the vertical frame front board body 11, and the architectural wall 1 on the hoistway side thereof.
Next, a procedure of mounting the vertical frame 3b will be described. Fig. 7 is an explanatory view showing a state in which the vertical frame back board 10 and the vertical frame front board body 11 of Fig. 6 are fixed to the corresponding one of the lateral edges of the landing doorway 2. As shown in the figure, first of all, the vertical frame back board 10 is fixed to the lateral edge of the landing doorway 2 via the fixing bracket 6, the void 6a is filled with the fireproof material 13, and the vertical frame front board body 11 is mounted on the vertical frame back board 10.
When the vertical frame front board body 11 is disposed at the mounting position of the vertical frame back board 10, the space 11e for the mounting operation communicates with the hoistway through an opening portion 11d for the mounting operation. An operator performs the operation of mounting the vertical frame front board body 11 on the vertical frame back board 10 through the opening portion 11d for the mounting operation (screwing each of the nuts onto each of the front board fixing stud bolts 16 inserted into the front board fixing holes).
Subsequently, the sheathing board 12 is fixed to the architectural wall 1, the vertical frame front board body 11, and the vertical frame back board 10 so as to close the opening portion 11d for the mounting operation. The vertical frame front board body 11 can be removed by following a procedure opposite to that of mounting the vertical frame front board body 11.
Next, the upper frame 3a will be described. Fig. 8 is a cross-sectional view showing a state of the upper frame 3a of Fig. 1 after the completion of surface finish of the architectural wall 1. In the figure, the upper frame 3a has an upper frame back board 30 and an upper frame front board body 31.
The upper frame back board 30 is obtained by bending a steel plate into a cranked cross-section. The upper frame back board 30 has a back board-side fixing bracket joint portion 30a through which the back board fixing long holes 15 are provided, a back board-side front board joint portion 30b joined to the upper frame front board body 31, and a back board-side architectural wall joint portion 30c joined to the architectural wall 1.
A front board fixing stud bolt 32, which is used for fixing the upper frame front board body 31 to the upper frame back board 30, is fixed to the back board-side front board joint portion 30b. A back board fixing hole, into which a back board fixing anchor bolt 33 fixed to the hoistway side of the architectural wall 1 is inserted, is provided through the back board-side architectural wall joint portion 30c. The upper frame back board 30 is fixed to the upper edge of the landing doorway 2 via corresponding ones of the fixing brackets 6, and a nut is screwed onto the back board fixing anchor bolt 33 inserted into the back board fixing hole. Accordingly, the upper frame back board 30 is fixed to the architectural wall 1. That is, the upper frame back board 30 is removably fixed to the upper edge of the landing doorway 2 and the architectural wall 1.
The void 6a is filled with the fireproof material 13 from the landing side. The void 6a is closed on the hoistway side thereof by the back board-side architectural wall joint portion 30c. The shaping plate 14 for shaping the fireproof material 13 is installed on the landing side of the void 6a, which is filled with the fireproof material 13.
The upper frame front board body 31 is constructed by bending a steel plate such that a folded portion is provided only to a landing-side end of the upper frame front board body 31. The upper frame front board body 31 is provided with a front board-side back board joint portion 31a as the folded portion, and a bent portion 31b as a hoistway-side end. The bent portion 31b extends along a vertical direction in a case where the upper frame 3a is mounted on the upper edge of the landing doorway 2.
The front board-side back board joint portion 31a is joined to the upper frame back board 30. A front board fixing hole, into which the front board fixing stud bolt 32 is inserted, is provided through the front board-side back board joint portion 31a. A nut is screwed onto the front board fixing stud bolt 32 inserted into the front board fixing hole, so the upper frame front board body 31 is fixed to the upper frame back board 30. That is, the upper frame front board body 31 is removably mounted on the upper frame back board 30.
A space 31c for the mounting operation exists between the upper frame front board body 31 and the upper frame back board 30 when the upper frame front board body 31 is mounted on the upper frame back board 30. A mounting portion of the upper frame front board body 31 mounted on the upper frame back board 30 is disposed within the space 31c for the mounting operation. The space 31c for the mounting operation communicates with the hoistway through an opening portion 31d for the mounting operation.
A door device 35 is provided above the landing doorway 2 on the hoistway side thereof. The opening portion 31d for the mounting operation is closed by the bent portion 31b and the door device 35. That is, the upper frame 3a is formed in a cylindrical shape (box-body structure) by the upper frame front board body 31, the upper frame back board 30, and the door device 35.
Next, a procedure of mounting the upper frame 3a will be described. As is the case with each of the vertical frames 3b, first of all, the upper frame back board 30 is fixed to the upper edge of the landing doorway 2 via the corresponding ones of the fixing brackets 6, the void 6a is filled with the fireproof material 13, and the upper frame front board body 31 is mounted on the upper frame back board 30.
The operation of mounting the upper frame front board body 31 on the upper frame back board 30 (screwing the nut onto the front board fixing stud bolt 32 inserted into the front board fixing hole) is performed before mounting the door device 35 above the landing doorway 2 on the hoistway side thereof. That is, the operation of mounting the upper frame front board body 31 on the upper frame back board 30 is performed from the opening portion 31d for the mounting operation. Subsequently, the door device 35 is mounted above the landing doorway 2 on the hoistway side thereof in such a manner as to close the opening portion 31d for the mounting operation. The upper frame front board body 31 can be removed by following the opposite procedure of mounting the upper frame front board body 31.
In the jamb 3 for the elevator constructed as described above, the vertical frame front board 5 is mounted on the vertical frame back board 10 fixed to the lateral edges of the landing doorway 2, thereby forming a cylinder. Therefore, a sufficient fireproof property can be achieved even if the space between the vertical frame back board 10 and the vertical frame front board 5 is not filled with the fireproof material 13. Further, the vertical frame front board 5 is removably mounted on the vertical frame back board 10, so replacement of the vertical frame front board 5 can be carried out with ease.
In the jamb 3 for the elevator constructed as described above, the vertical frame front board 5 has the vertical frame front board body 11 and the sheathing board 12. Therefore, the operation of mounting the vertical frame front board 5 on the vertical frame back board 10 can be performed with ease.
Further, in the j amb 3 for the elevator constructed as described above, the mounting portions of the vertical frame front board body 11 and the vertical frame back board 10 (front board fixing hole and the front board fixing stud bolt 16) are disposed within the space 11e for the mounting operation. Therefore, the operation of removing the vertical frame front board body 11 can be performed by removing the sheathing board 12 even in a state in which the vertical frames 3b are cylindrical, namely, a state in which the respective frames of the jamb 3 are fixed to the edges of the landing doorway2. Consequently, both the fireproofproperty of the vertical frames 3b and the convenience in replacing the vertical frame front board body 11 can be achieved.
Still further, in the jamb 3 for the elevator constructed as described above, the upper frame front board body 31 is removably mounted on the upper frame back board 30, and the opening portion 31d for the mounting operation is closed by the bent portion 31b and the door device 35. Therefore, the upper frame 3a is cylindrically formed by the upper frame back board 30, the upper frame front board body 31, and the door device 35. Consequently, a sufficient fireproof property can be achieved even if the interior of the upper frame 3a is not filled with the fireproof material, and the upper frame front board body 31 can be replaced more easily.
In Embodiment 1 of the present invention, the mounting position of each of the fixing brackets 6 on the corresponding one of the lateral edges of the landing doorway 2 is adjustable in the vertical direction, and the mounting position of each of the fixing brackets 6 on the vertical frame 3b is adjustable in the depth direction of the landing doorway 2. However, the opposite construction is also acceptable. That is, it is appropriate that the bracket fixing long hole and the back board fixing long hole be arranged such that their longitudinal directions become perpendicular to each other. As for the upper frame 3a as well, it is appropriate that the bracket fixing long hole and the back board fixing long hole be arranged such that their longitudinal directions become perpendicular to each other.
In Embodiment 1 of the present invention, the bolts and the nuts are used to connect the members to one another. However, it is also possible to adopt, for example, a method of engaging pawls with holes as long as the members can be removably connected to one another.

Claims

A jamb for an elevator, comprising:
a back board fixed to an edge of a landing doorway; and

a front board removably mounted on the back board, for forming a cylinder together with the back board by being mounted on the back board.
The jamb for an elevator according to Claim 1, wherein the front board has a front board body for surrounding a space between the back board and the front board except an opening facing a hoistway, and a sheathing board removably mounted on the back board and the front board body so that the sheathing board closes the opening.
The jamb for an elevator according to Claim 2, wherein a mounting portion of the front board body on the back board is disposed within a space between the back board and the front board.