JP7554504B2 - Bracket for work floor and work floor - Google Patents

Description

The present invention relates to a bracket for a work floor and a work floor.

Traditionally, work has been done to install shutters on windows in detached houses and apartment buildings, and to drill holes in the exterior walls around the window frames to allow air conditioner ducts to pass through. When doing this work at a height of two floors or higher, it is necessary to set up a work scaffold. In buildings that have already been completed, the scaffolding has been removed, so when work such as installing shutters is to be done later, it is necessary to use a stepladder or to set up new scaffolding. However, work using a stepladder is prone to becoming unstable, and setting up new scaffolding requires money and time. Also, when the distance between adjacent buildings is narrow, it may not be possible to set up a stepladder or set up scaffolding. For this reason, a work platform that is installed on the window frame has been proposed (see Patent Document 1).

Patent No. 6470556

The work floor in the above patent document is configured so that a part of the fastener is engaged with the underside of the part of the window frame that protrudes into the room, so that the weight of the worker does not cause the work floor to rotate to the outside and fall off. Therefore, if the part of the window frame that protrudes into the room is not long enough to support the load, the work floor is likely to become unstable. Also, if the window frame does not protrude into the room, the work floor cannot be installed.

The object of the present invention is to provide a bracket for a work floor and a work floor that can be installed more stably on a window frame.

The first invention is a bracket for a work floor that is installed on a window frame of an opening in a building, the bracket comprising: a first main body arm that extends from the inside to the outside on the window frame; a first outer arm that is provided on the outside of the first main body arm so as to follow the outer wall of the building; a first inner arm that is provided on the inside of the first main body arm so as to follow the inner wall of the building; and a first window frame abutment that is provided on the inside of the first main body arm and abuts against the window frame and/or the inner wall around the opening of the window frame, and is installed on one side in the width direction of the window frame. This relates to a work floor bracket comprising a first bracket, a second main body arm extending from the inside to the outside on the window frame, a second outer arm provided on the outside of the second main body arm so as to follow the outer wall of the building, a second inner arm provided on the inside of the second main body arm so as to follow the inner wall of the building, and a second bracket provided on the inside of the second main body arm and equipped with a second window frame abutment that abuts against the window frame and/or the inner wall around the opening of the window frame, and installed on the other side in the width direction of the window frame.

The second invention relates to a bracket for a work floor, which is the same as the first invention, except that the first outer arm has a first outer wall abutment portion that abuts against the outer wall at a position spaced below the window frame, and the second outer arm has a second outer wall abutment portion that abuts against the outer wall at a position spaced below the window frame.

The work floor bracket according to the third invention is the first or second invention, in which the first inner arm has a first inner wall abutment portion that abuts against the inner wall at a position spaced downward from the window frame, and the second inner arm has a second inner wall abutment portion that abuts against the inner wall at a position spaced downward from the window frame.

The work floor bracket according to the fourth invention is any of the first to third inventions and includes a first connecting member that connects the first main body arm near the window frame and the second main body arm near the window frame.

The work floor bracket according to the fifth invention is any one of the first to fourth inventions, and is provided with a second connecting member that connects the end of the first main body arm that is on the outside of the window frame to the end of the second main body arm that is on the outside of the window frame.

The sixth aspect of the present invention is a work floor bracket according to any one of the first to fifth aspects, in which the first main body arm has a first outer frame portion arranged to surround the area where the floor board is to be placed, and the second main body arm has a second outer frame portion arranged to surround the area where the floor board is to be placed.

The seventh invention relates to a work floor bracket according to any one of the first to sixth inventions, and includes a fence section including a first support member provided at the outside end of the first main body arm and extending upward from said end, a second support member provided at the outside end of the second main body arm and extending upward from said end, and a third connecting member connecting the upper end of the first support member and the upper end of the second support member.

The eighth aspect of the present invention is a work floor bracket according to the seventh aspect, wherein the fence portion includes a first movable portion that supports the first support member so that it can rotate freely relative to the first main body arm, and a second movable portion that supports the second support member so that it can rotate freely relative to the second main body arm.

The ninth aspect of the present invention is a bracket for a work floor according to the seventh or eighth aspect of the present invention, wherein the fence portion includes a first upper connecting support portion that movably supports one side of the third connecting member at the upper end portion of the first support member, and a second upper connecting support portion that movably supports the other side of the third connecting member at the upper end portion of the second support member.

The work floor bracket according to the tenth invention is any of the seventh to ninth inventions, in which the fence portion includes a fourth connecting member below the third connecting member that connects the first support member and the second support member.

The work floor bracket according to the eleventh invention is any of the seventh to tenth inventions, in which the first support member has a first lower connecting support part that movably supports one side of the fourth connecting member, and the second support member has a second lower connecting support part that movably supports the other side of the fourth connecting member.

The twelfth invention relates to a bracket for a work floor, and is any of the first to eleventh inventions, wherein the first bracket comprises a first outer edge arm provided at the end of the first main body arm on the outside of the room and extending downward from the end, and a first floor board arm provided to connect between the lower end of the first outer edge arm and the first outer arm and having an area on its upper surface for placing a floor board, and the second bracket comprises a second outer edge arm provided at the end of the second main body arm on the outside of the room and extending downward from the end, and a second floor board arm provided to connect between the lower end of the second outer edge arm and the second outer arm and having an area on its upper surface for placing a floor board.

The work floor bracket according to the thirteenth invention is the twelfth invention, in which the first bracket comprises a first intermediate arm provided between the first main body arm and the first floor plate arm to connect between the first outer edge arm and the first outer arm, and the second bracket comprises a second intermediate arm provided between the second main body arm and the second floor plate arm to connect between the second outer edge arm and the second outer arm.

The work floor bracket according to the 14th invention is the 13th invention, in which the first intermediate arm has a first floor board fixing portion that fixes the floor board to be placed in the floor board intended placement area of the first floor board arm, and the second intermediate arm has a second floor board fixing portion that fixes the floor board to be placed in the floor board intended placement area of the second floor board arm.

The work floor bracket according to the fifteenth invention is any of the second to fourteenth inventions, in which the first exterior wall abutment portion comprises a first exterior wall pressing member that abuts against the exterior wall and a first pressing member support portion that brings at least a portion of the first exterior wall pressing member into close contact with the exterior wall, and the second exterior wall abutment portion comprises a second exterior wall pressing member that abuts against the exterior wall and a second pressing member support portion that brings at least a portion of the second exterior wall pressing member into close contact with the exterior wall.

The sixteenth invention is a bracket for a work floor that is installed on a first window frame of a first opening and a second window frame of a second opening that are adjacent to each other in a building, the bracket comprising a first main body arm that extends from the indoor side to the outdoor side on the first window frame, a first outer arm that is provided on the outdoor side of the first main body arm so as to follow the outer wall of the building, a first inner arm that is provided on the indoor side of the first main body arm so as to follow the inner wall of the building, and a first window frame abutment portion that is provided on the indoor side of the first main body arm and abuts against the first window frame and/or the inner wall around the first opening of the first window frame, and a first window frame abutment portion that is provided on one side of the width direction of the first window frame. or the other side; a second main body arm extending from the inside to the outside on the second window frame; a second outer arm provided on the outside of the second main body arm so as to follow the outer wall of the building; a second inner arm provided on the inside of the second main body arm so as to follow the inner wall of the building; and a second bracket provided on the inside of the second main body arm and having a second window frame abutment portion that abuts against the second window frame and/or the inner wall around the second opening of the second window frame, and installed on one or the other side in the width direction of the second window frame.

The seventeenth invention relates to a work floor comprising a work floor bracket according to any one of the first to sixteenth inventions, and a floor board to be placed on the floor board placement area of the first main body arm of the work floor bracket and the floor board placement area of the second main body arm.

The present invention provides a bracket for a work floor and a work floor that can be installed more stably on a window frame.

FIG. 2 is a schematic diagram of the work platform 1 of the first embodiment as viewed from the outside of the room. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 2 is a configuration diagram of the work platform 1 of the first embodiment as viewed from the inside of the room. FIG. 11 is a schematic diagram of the work platform 1A of the second embodiment as viewed from the outside of the room. 5 is a cross-sectional view corresponding to line BB in FIG. 4. 5 is a cross-sectional view corresponding to line BB in FIG. 4. FIG. 11 is a schematic diagram of the work platform 1B of the third embodiment as viewed from the inside of the room. A configuration diagram of a work platform 1C of the fourth embodiment as viewed from the outside of the room. A configuration diagram of a work platform 1C of the fourth embodiment as viewed from the inside of the room. FIG. 13 is a configuration diagram of a working platform 1D of the fifth embodiment as viewed from the outside of the room. 11 is a cross-sectional view corresponding to line CC in FIG. 11 is a cross-sectional view corresponding to line CC in FIG. This is a cross-sectional view taken along line D-D in Figure 11. FIG. 2 is a configuration diagram of the work platform 1 of the first embodiment as viewed from the inside of the room. A cross-sectional view of a work floor 1E of the sixth embodiment. 13 is a conceptual diagram illustrating a method for fixing a floor plate 3a provided on a main body arm 11. FIG. 16 is a cross-sectional view corresponding to line EE in FIG. 15. FIG. 13 is a schematic diagram of the work platform 1E of the sixth embodiment as viewed from the inside of the room. A cross-sectional view of the work floor 1F of the seventh embodiment. 20 is a cross-sectional view corresponding to line FF in FIG. 19. A configuration diagram of the work floor 1F of the seventh embodiment as viewed from the inside of the room.

Hereinafter, embodiments of a bracket for a work floor and a work floor according to the present invention will be described.
The drawings attached to this specification are all schematic diagrams, and the shape, scale, aspect ratio, etc. of each part are modified or exaggerated from the actual product in consideration of ease of understanding, etc. Furthermore, hatching showing the cross section of a member is omitted as appropriate in the drawings.

In each of the figures shown below, an XYZ Cartesian coordinate system is provided to facilitate explanation and understanding. In this coordinate system, the width direction of the work floor installed in the window frame when viewed from the front of the exterior side of the building is the X (X1-X2) direction, the height direction is the Y (Y1-Y2) direction, and the depth direction is the Z (Z1-Z2) direction. In the width direction (left-right direction) X, the right direction in the figure is the X1 direction, and the left direction is the X2 direction. In the height direction (up-down direction) Y, the upper direction in the figure is the Y1 direction, and the lower direction is the Y2 direction. In the depth direction (front-back direction) Z, the front direction in the figure is the Z1 direction, and the rear direction is the Z2 direction. In this specification, the "~ direction" is also referred to as "~ side" as appropriate. In addition to the names of the front direction and rear direction, the depth direction Z1 in front of the window frame is also referred to as the "outside side" and the rear direction Z2 in the window frame is also referred to as the "inside side".

First Embodiment
Fig. 1 is a configuration diagram of the work floor 1 of the first embodiment as viewed from the outside of the room. Fig. 2 is a cross-sectional view of line A-A in Fig. 1. Fig. 3 is a configuration diagram of the work floor 1 of the first embodiment as viewed from the inside of the room. In each figure, illustration of details such as screw threads is omitted.
As shown in Figures 1 and 2, the work floor 1 of the first embodiment includes a work floor bracket 2 and a floor plate 3. The work floor bracket 2 is a structure for installing the floor plate 3 on the outdoor side Z1 of a window frame 6. The floor plate 3 is a member on which a worker stands for work. The work floor bracket 2 is installed in a window frame 6 of a window (opening) 5 provided in a wall 4 of a building such as a detached house or an apartment building. The window 5 is configured as a so-called sliding window, and an outer screen 5a and an inner screen 5b are fitted into the window frame 6.

The work floor bracket 2 includes a first bracket 10, a second bracket 20, a first connecting member 16, a second connecting member 17, etc. The configurations of the first bracket 10 and the second bracket 20 are symmetrical when viewed from the front and are substantially identical, so in the first embodiment, the description of the first bracket 10 also serves as the description of the second bracket 20. Therefore, the reference numerals of the parts constituting the second bracket 20 are the same as the reference numerals of the parts constituting the first bracket 10. For example, the "main body arm 11" of the first bracket 10 is also referred to as the "main body arm 11" of the second bracket 20.

As shown in FIG. 2, the first bracket 10 includes a main body arm (first main body arm/second main body arm) 11, an outer arm (first outer arm/second outer arm) 12, an inner arm (first inner arm/second inner arm) 14, a support arm 13, an outer wall abutment portion (first outer wall abutment portion, second outer wall abutment portion) 30, an inner wall abutment portion (first inner wall abutment portion/second inner wall abutment portion) 40, a window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 50, an outer frame portion (first outer frame portion/second outer frame portion) 60, etc. Among these, the main body arm 11, the outer arm 12, the support arm 13, the inner arm 14, the outer frame portion 60, etc. are made of, for example, a metal square pipe. Each part may be joined by welding, or may be connected with a plate, bolts, nuts, etc. Also, each part may be integrally constructed. For example, the main body arm 11, outer arm 12, support arm 13, and inner arm 14 may be integrally configured.

The main body arm 11 is a member that extends from the indoor side Z2 to the outdoor side Z1 on the window frame. On the window frame means above the window frame member arranged on the lower side Y2 of the window frame 6 (see FIG. 2). As shown in FIG. 1 and FIG. 2, the vicinity of the window frame of the main body arm 11 of the first bracket 10 and the vicinity of the window frame of the main body arm 11 of the second bracket 20 are connected by the first connecting member 16. The first connecting member 16 is, for example, made of a metal square pipe. The first connecting member 16 and the main body arm 11 may be connected detachably, for example, by a plate, bolts, nuts, etc. Note that "vicinity of the window frame" refers to an area located on the outdoor side within a range of 0 mm to 500 mm from the end of the outdoor side Z1 of the part where the main body arm 11 abuts the window frame 6. Therefore, the first connecting member 16 is installed so that the distance between the indoor side Z2 end of the first connecting member 16 and the outdoor side Z1 end of the part where the main body arm 11 abuts against the window frame 6 is 0 mm or more and 500 mm or less.

By connecting the first bracket 10 and the second bracket 20, which are installed on the window frame 6, with the first connecting member 16, it is possible to prevent the portions of the two brackets near the window frame from moving inward or outward in the width direction X. Note that the position where the first connecting member 16 is provided is not limited to the upper side Y1 of the main body arm 11 as shown in FIG. 2, but may be, for example, the lower side Y2 or another position.

The end of the main body arm 11 of the first bracket 10 on the outdoor side Z1 from the window frame 6 and the end of the main body arm 11 of the second bracket 20 on the outdoor side Z1 from the window frame 6 are connected by a second connecting member 17. The second connecting member 17 is, for example, made of a metal square pipe. The second connecting member 17 and the main body arm 11 may be connected detachably, for example, with a plate, bolts, nuts, etc. Note that the second connecting member 17 is not limited to the end of the main body arm 11 on the outdoor side Z1 from the window frame of each bracket, but may be provided near the end. The vicinity of the end is, for example, the area from the end to the outdoor side Z1 end of the floor board area S (described later).

By connecting the first bracket 10 and the second bracket 20 installed on the window frame 6 with the second connecting member 17, it is possible to more reliably prevent the ends of the two brackets on the outdoor side Z1 from moving inward or outward in the width direction X. The position at which the second connecting member 17 is provided is not limited to the position shown in FIG. 2, and may be, for example, on the lower side Y2 of the main body arm 11 and inside the support arm 13, or may be in another position.

The outer arm 12 is a member provided along the outer wall 4a on the outdoor side Z1 of the main arm 11, and is joined to the main arm 11 so that the longitudinal direction of the outer arm 12 is approximately perpendicular to the longitudinal direction of the main arm 11. The outer arm 12 extends from near the window frame of the main arm 11 to the lower side Y2. As shown in FIG. 2, the area between the end of the main arm 11 on the outdoor side Z1 and the outer arm 12 is the floor board area (area where the floor board is to be placed) S. As shown in FIG. 1, in the first bracket 10, the right side X1 part of the floor board 3 is placed on the upper side Y1 surface of the main arm 11. In the second bracket 20, the left side X2 part of the floor board 3 is placed on the upper side Y1 surface of the main arm 11. The floor board 3 is stretched between the two brackets in the left-right direction X of the work floor 1. The number of floor boards 3 placed on the work floor 1 is not limited to one, and may be two or more.

The support arm 13 is a member that connects the vicinity of the end of the main arm 11 on the outdoor side Z1 to the vicinity of the end of the outer arm 12 on the lower side Y2.
The inner arm 14 is a member provided along the inner wall of the wall 4 on the indoor side Z2 of the main body arm 11, and is joined to the main body arm 11 so that the longitudinal direction of the inner arm 14 is approximately perpendicular to the longitudinal direction of the main body arm 11. The inner arm extends from the end of the indoor side Z2 of the main body arm 11 to the lower side Y2. As shown in FIG. 2, the area between the outer arm 12 and the inner arm 14 in the main body arm 11 is a planned installation area for the window frame 6. In addition, in the main body arm 11, a cushioning material (e.g., a rubber plate) for protecting the window frame 6 may be provided in the part that contacts the window frame 6, or a member (e.g., a square timber) for adjusting the height between the window frame 6 may be provided. At the end of the lower side Y2 of the inner arm 14, a shaft hole 14a through which the shaft 42 (described later) of the inner wall abutment part 40 passes is provided along the depth direction Z.

The outer wall abutment portion 30 is a mechanism provided at the end of the lower side Y2 of the outer arm 12 and abuts against the outer wall 4a. The outer wall abutment portion 30 abuts against the outer wall 4a at a position spaced from the window frame 6 to the lower side Y2. The outer wall abutment portion 30 includes a threaded pipe 31 and a pressing cap 32. The threaded pipe 31 is a pipe-shaped part having a male thread (not shown) formed on the outer peripheral surface. One end side of the threaded pipe 31 is attached to the end of the lower side Y2 of the outer arm 12. The pressing cap 32 is a substantially conical part having a hole penetrating in the longitudinal direction and a female thread (not shown) formed on the inner peripheral surface of the hole that can be screwed with the male thread of the threaded pipe 31. The worker can adjust the distance L1 between the outer arm 12 and the outer wall 4a by screwing the pressing cap 32 onto the threaded pipe 31 and turning it clockwise or counterclockwise. In addition, a cushioning material made of rubber or resin may be provided on the surface of the pressing cap 32 facing the outer wall 4a. In addition, the configuration of the outer wall contact portion 30 is not limited to the example of the first embodiment, and any configuration that can function equally well may be used. In the fifth embodiment (described later), another configuration example of the outer wall contact portion 30 is shown.

The inner wall abutment portion 40 is a mechanism provided at the end of the lower side Y2 of the inner arm 14 and abuts against the inner wall 4b. The inner wall abutment portion 40 abuts against the inner wall 4b at a position spaced from the window frame 6 to the lower side Y2. The inner wall abutment portion 40 includes a pressing portion 41, a shaft 42, a nut 43, a dial 44, and a pressing member 15. As shown in FIG. 2, the pressing portion 41 is a generally concave-shaped part that holds the pressing member 15. The pressing member 15 is a member that abuts against the inner wall 4b by the inner wall abutment portion 40 (pressing portion 41) and presses the inner wall 4b. The pressing member 15 is preferably made of a material that is unlikely to cause damage to the surface of the inner wall 4b, and for example, wood, resin, etc. can be used. As shown in FIG. 3, the pressing member 15 extends along the width direction X of the work floor bracket 2, so that the inner wall 4b can be pressed over a wider area. Note that the pressing member 15 may be provided separately on each of the left and right inner wall contact portions 40, as in the fourth embodiment described below.

The shaft 42 is a rod-shaped part, one end of which is connected to the pressing part 41. A dial 44 (described later) is attached to the other end of the shaft 42. A male thread is formed on the outer circumferential surface of the shaft 42, which can be screwed into a nut 43 (described later). The shaft 42 passes through a shaft hole 14a provided at the end of the lower side Y2 of the inner arm 14.

The nut 43 is a part having a female thread formed on the inner circumferential surface thereof, which can be screwed with the shaft 42. The nut 43 is provided on the rear side Z2 at the end of the lower side Y2 of the inner arm 14. The nut 43 may be joined to the inner arm 14, for example, by welding. The center of the nut 43 coincides with the center of the shaft hole 14a. The dial 44 is a part operated by an operator to adjust the length (spacing) L2 between the inner wall 4b and the inner arm 14. The dial 44 is attached to the other end of the shaft 42. The length (spacing) L2 between the inner wall 4b and the inner arm 14 can be adjusted by rotating the dial 44 clockwise or counterclockwise. The configuration of the inner wall abutment portion 40 is not limited to the example of the first embodiment, and any configuration may be used as long as it functions in the same way. For example, it may be a square timber having a predetermined length in the depth direction Z.

The window frame abutment portion 50 is a structure that supports the first bracket 10 from the indoor side Z2, and is provided on the indoor side Z2 of the main body arm 11. The window frame abutment portion 50 includes a support plate 51 and an abutment plate 52. As shown in Figures 2 and 3, the support plate 51 is a member that is provided at the end of the indoor side Z2 of the main body arm 11 and extends toward the upper side Y1. One end of the abutment plate 52 is fixed to the end of the upper side Y1 of the support plate 51. The abutment plate 52 is a member that is provided at the end of the upper side Y1 of the support plate 51 and abuts against the window frame 6.

As shown in FIG. 3, at the window frame abutment portion 50 of the first bracket 10, the abutment plate 52 has one end fixed to the support plate 51. The other end protrudes from the support plate 51 to the right (left direction in FIG. 3) X1 to abut against the window frame 6. At the window frame abutment portion 50 of the second bracket 20, the abutment plate 52 has one end fixed to the support plate 51. The other end protrudes from the support plate 51 to the left (right direction in FIG. 3) X2 to abut against the window frame 6. With the above configuration, a worker can easily move from the outside to the inside of the room and from the inside to the outside of the room from the window 5 with the outer screen 5a and inner screen 5b removed. In the first embodiment, an example is shown in which the left and right abutment plates 52 abut against the window frame 6, but the abutment plates 52 may be configured to abut against the inner wall 4b around the opening (window) of the window frame 6, or may be configured to abut against both the window frame 6 and the inner wall 4b around the opening (window) of the window frame 6.

The outer frame portion 60 is a member for preventing the floor board 3 placed on the floor board area S from bouncing up. As shown in FIG. 2, the outer frame portion 60 is provided on the upper side Y1 of the main body arm 11 so as to surround the floor board 3 placed on the floor board area S. It is preferable to fix the floor board 3 to the floor board area S of the main body arm 11 with bolts or the like, but it can also be used by simply placing it on the surface of the upper side Y1 of the main body arm 11. In that case, even if a worker moves on the floor board 3 or loses balance, the outer frame portion 60 can prevent the worker from falling due to the floor board 3 bouncing up as much as possible.

The work platform 1 of the first embodiment configured as described above can be installed on the window frame 6, for example, as follows.
First, as shown in Figure 1, the outer screen 5a (inner screen 5b) fitted into the window frame 6 is moved to ensure space on both sides of the window frame 6 in the left-right direction X. Next, the first bracket 10 and the second bracket 20 are installed on the right side X1 and left side X2 of the window frame 6 from the inside of the room, respectively. Specifically, as shown in Figure 2, they are installed so that they span the area between the outer arm 12 and the inner arm 14 of the main body arm 11 (the area to be installed in the window frame) over the window frame 6. When installing each bracket, it is desirable to adjust the distance L1 between the outer arm 12 and the exterior wall 4a to an appropriate dimension.

Next, the first connecting member 16 and the second connecting member 17 are attached between the two brackets as shown in Fig. 2. The first connecting member 16 and the second connecting member 17 may be attached between the two brackets in advance.
Next, as shown in FIG. 3, the pressing member 15 is passed through the inner wall abutment portion 40 (pressing portion 41) of each bracket, and the distance L2 between the inner wall 4b and the inner arm 14 is adjusted so that the abutment plate 52 of the window frame abutment portion 50 abuts against the window frame 6. The distance L2 between the inner wall 4b and the inner arm 14 can be adjusted by turning the dial 44 clockwise or counterclockwise. After adjusting the inner wall abutment portion 40 so that the abutment plate 52 of the window frame abutment portion 50 abuts against the window frame 6, the pressing cap 32 of the outer wall abutment portion 30 is rotated clockwise or counterclockwise to adjust the distance L1 between the outer arm 12 and the outer wall 4a so that the outer wall abutment portion 30 (pressing cap 32) presses the outer wall 4a. At this time, if the main body arm 11 is not horizontal, the main body arm 11 is adjusted so that it is horizontal.

The above work restricts the movement of each bracket in the left-right direction X and the depth direction Z. After this, the floor board 3 is placed on the floor board area S of the main body arm 11 and fixed to the main body arm 11 with bolts or the like, completing the installation of the work floor 1. Note that the procedure for installing the work floor 1 on the window frame 6 is not limited to the above example, and may be changed as appropriate depending on, for example, the shape of the window frame 6 and the number of workers.

According to the work platform 1 and the work platform bracket 2 of the first embodiment described above, for example, the following effects are achieved.
The work floor 1 and the work floor bracket 2 can receive the load of a worker standing on the floor board 3 by the exterior wall abutment portion 30 and the window frame abutment portion 50. Among these, the window frame abutment portion 50 is not engaged with the lower side Y2 of the portion where the window frame 6 protrudes from the inner wall 4b, so that the load of the worker can be more reliably received even when the portion where the window frame 6 protrudes from the inner wall 4b is not long enough to receive the load or when the window frame 6 does not protrude from the inner wall 4b. Therefore, the work floor 1 and the work floor bracket 2 of the first embodiment can be more stably installed on the window frame 6. In addition, in the left and right brackets, the abutment plates 52 of the window frame abutment portion 50 are not connected in the left-right direction X. Therefore, the worker can enter the work floor 1 from the indoor side Z2 and enter the indoor side Z2 from the work floor 1 without interfering with the window frame abutment portion 50.

The work floor 1 and the work floor bracket 2 are provided with an inner wall abutment portion 40 on the inner arm 14 that abuts against the inner wall 4b at a position spaced from the window frame 6 to the lower side Y2. The work floor 1 and the work floor bracket 2 can press the wall 4 in the depth direction Z by the inner wall abutment portion 40 and the outer wall abutment portion 30, so that the movement of each bracket in the depth direction Z can be more reliably restricted. In addition, by providing the inner wall abutment portion 40, a part of the load received by the window frame abutment portion 50 can be dispersed.

The work floor 1 and the work floor bracket 2 are provided with a first connecting member 16 that connects between the window frame vicinity of the main arm 11 of the first bracket 10 and the window frame vicinity of the main arm 11 of the second bracket 20. Therefore, in the work floor 1 and the work floor bracket 2, it is possible to suppress the malfunction in which the portions of the two brackets near the window frames move inward or outward in the width direction X.

The work floor 1 and the work floor bracket 2 are provided with a second connecting member 17 that connects the end of the main arm 11 of the first bracket 10 on the outdoor side Z1 relative to the window frame 6 to the end of the main arm 11 of the second bracket 20 on the outdoor side Z1 relative to the window frame 6. Therefore, in the work floor 1 and the work floor bracket 2, the outdoor side Z1 ends of the two brackets can be more reliably prevented from moving inward or outward in the left-right direction X.

The work floor 1 and the work floor bracket 2 are provided with an outer frame portion 60 that is provided to surround the floor board area S of the main body arm 11. Therefore, when the floor board 3 is placed on the floor board area S of the main body arm 11 without being fixed, even if the worker moves on the floor board 3 or the weight balance is lost, the outer frame portion 60 can prevent the worker from falling due to the floor board 3 bouncing up as much as possible.

Second Embodiment
The working floor 1A of the second embodiment differs from the first embodiment in that it is provided with a protective fence (fence portion) 70. The other configurations of the working floor 1A of the second embodiment are the same as those of the first embodiment. Therefore, in the explanation and drawings of the second embodiment, the same members and equivalent members as those of the first embodiment are given the same reference numerals as those of the first embodiment, and duplicate explanations will be omitted.

Figure 4 is a diagram of the work platform 1A of the second embodiment as viewed from the outside of the room. Figures 5 and 6 are cross-sectional views corresponding to line B-B in Figure 4. Figure 5 shows the protective fence 70 in an upright position when in use. Figure 6 shows the protective fence 70 in a folded, stored position. Note that Figures 5 and 6 omit some of the configuration above the window 5 on the Y1 side and the configuration below the main body arm 11 on the Y2 side.

4 and 5, the work floor 1A of the second embodiment is provided with a guard fence 70 on the upper side (Y1) of the first bracket 10 and the second bracket 20. The guard fence 70 is a structure for preventing a worker standing on the floor plate 3 from falling. The guard fence 70 is composed of a first support member 71, a second support member 72, a third connecting member 73, a first movable part 74, a second movable part 75, etc. As shown in FIG. 4, the first support member 71 is a member provided at the end of the outside Z1 of the main body arm 11 in the first bracket 10 and extending from the end to the upper side Y1. The second support member 72 is a member provided at the end of the outside Z1 of the main body arm 11 in the second bracket 20 and extending from the end to the upper side Y1. The third connecting member 73 is a member that connects the upper Y1 end of the first support member 71 and the upper Y1 end of the second support member 72. The first support member 71, the second support member 72, and the third connecting member 73 are made of, for example, metal square pipes. As shown in FIG. 4, the protective fence 70 is made into an inverted concave shape by the first support member 71, the second support member 72, and the third connecting member 73.

The first support member 71 is connected to the outer frame portion 60 via the first movable portion 74. The first movable portion 74 is a mechanism that supports the first support member 71 rotatably relative to the main body arm 11 of the first bracket 10. The second movable portion 75 is a mechanism that supports the second support member 72 rotatably relative to the main body arm 11 of the second bracket 20. Since the configurations of the first movable portion 74 and the second movable portion 75 are substantially the same, in the second embodiment, the description of the first movable portion 74 also serves as the description of the second movable portion 75.

The first movable part 74 includes a support plate 76, a rotating shaft part 77, and a fixed shaft part 78. The support plate 76 is a member that supports the lower side Y2 of the first support member 71. When viewed from the vertical direction Y, the support plate 76 is configured to have a substantially concave shape so as to surround the three sides of the first support member 71, namely, the outdoor side Z1, the right side X1, and the left side X2. Also, as shown in FIG. 5, the support plate 76 is configured to have a substantially L-shape when viewed from the horizontal direction X. The end of the lower side Y2 of the first support member 71 is supported by the support plate 76 so as to abut against the upper side Y1 of the outer frame part 60 when the protective fence 70 is in an upright state. Also, the support plate 76 is provided with a through hole through which the rotating shaft part 77 and the fixed shaft part 78 (described later) pass. In FIG. 4 and FIG. 5, the through hole through which the fixed shaft part 78 passes is omitted. FIG. 6 shows the through hole 76a through which the fixed shaft part 78 passes.

The pivot shaft 77 is a component that supports the support plate 76 so that it can rotate freely relative to the outer frame 60. The pivot shaft 77 is formed, for example, of a bolt and nut (reference numbers omitted). The outer frame 60 of the second embodiment is provided with a through hole (not shown) through which the pivot shaft 77 (bolt) passes. Figure 6 shows a through hole 60a in the outer frame 60 through which a fixed shaft 78 (bolt) described later passes. Under normal use, the pivot shaft 77 is not attached or detached like the fixed shaft 78 (described later).

The fixed shaft portion 78 is a mechanism for fixing and releasing the support plate 76 to the outer frame portion 60. The fixed shaft portion 78 is, for example, composed of a bolt and a nut (reference numerals omitted). As shown in FIG. 5, the protective fence 70 (first support member 71, second support member 72) can be placed in an upright position by attaching the fixed shaft portion 78 to the support plate 76, thereby putting the protective fence 70 into a usable state. Also, in FIG. 5, when the fixed shaft portion 78 is removed from the support plate 76 and the protective fence 70 is tilted in the direction of the arrow, the protective fence 70 rotates clockwise around the pivot shaft portion 77. This allows the protective fence 70 to be folded so that it overlaps with the outer frame portion 60, as shown in FIG. 6.

The work floor 1A and the work floor bracket 2 of the second embodiment are equipped with a protective fence 70, which can prevent workers from falling to the outside Z1 as much as possible. In addition, the protective fence 70 can be folded at the first movable part 74 and the second movable part 75, which makes it easy to transport the work floor 1A and the work floor bracket 2. In addition, the storage space for the work floor 1A and the work floor bracket 2 can be made smaller. The configuration of the second embodiment can also be applied to the third and fourth embodiments described below.

Third Embodiment
The working floor 1B of the third embodiment differs from the first embodiment in the configuration of the window frame abutment portion 150. The other configurations of the working floor 1B of the third embodiment are the same as those of the first embodiment. Therefore, in the explanation and drawings of the third embodiment, the same reference numerals as those of the first embodiment or the same reference numerals at the end (the last two digits) of the reference numerals are used for the same members and equivalent members as those of the first embodiment, and duplicate explanations are omitted. In the working floor 1B of the third embodiment, the configuration of the outdoor side Z1 is the same as that of the first embodiment, so the configuration of the indoor side Z2 will mainly be described.

Figure 7 is a diagram of the working floor 1B of the third embodiment as viewed from the inside of the room. As shown in Figure 7, the window frame abutment portion 150 of the third embodiment includes a support plate 151, an abutment plate 152, and an outer periphery abutment plate 153. The support plate 151 and the abutment plate 152 are the same as the support plate 51 and the abutment plate 52 of the first embodiment. The outer periphery abutment plate 153 is a member that abuts against the inner wall 4b around the opening (window) of the window frame 6. In the window frame abutment portion 150 of the third embodiment, the abutment plate 152 abuts against the window frame 6, and the outer periphery abutment plate 153 abuts against the inner wall 4b around the opening of the window frame 6. The outer periphery abutment plate 153 may be composed of one member, or may be composed of multiple members joined together. Note that a part of the outer periphery abutment plate 153 may abut against the window frame 6.

Reinforcing materials (e.g., rafters, etc.) are installed on the outer periphery of the window frame 6. The work floor 1B and work floor bracket 2 of the third embodiment can support the outer periphery abutment plate 153 at the position of this reinforcing material, so the work floor 1B and work floor bracket 2 can be installed more stably on the window frame 6. The configuration of the third embodiment can also be applied to the second embodiment described above and the fourth embodiment described below (in the case of the same room).

Fourth Embodiment
The working floor 1C of the fourth embodiment differs from the first embodiment in the configuration of a portion of the window frame abutment portion 50. The other configurations of the working floor 1C of the fourth embodiment are the same as those of the first embodiment. That is, the working floor 1C of the fourth embodiment has the same configuration as the working floor 1 shown in the first embodiment, except for the configuration of a portion of the window frame abutment portion 50. Therefore, in the explanation and drawings of the fourth embodiment, the same members and equivalent members as those of the first embodiment are given the same reference numerals as those of the first embodiment, and duplicate explanations will be omitted.

Figure 8 is a diagram of the working floor 1C of the fourth embodiment as viewed from the outside of the room. Figure 9 is a diagram of the working floor 1C of the fourth embodiment as viewed from the inside of the room. As shown in Figure 8, the working floor 1C of the fourth embodiment is installed between adjacent windows (first opening) 5A and (second opening) 5B. On the inside of the room, the two windows 5A and 5B may be connected, or may be separated by a wall. That is, the windows 5A and 5B may be windows installed in the same room, or may be windows in different adjacent rooms.

8 and 9, the working floor 1C of the fourth embodiment differs from the first embodiment in the orientation of the abutment plate 52 of each window frame abutment portion 50 of the first bracket 10 and the second bracket 20. As shown in FIG. 8 and FIG. 9, in the window frame abutment portion 50 of the first bracket 10, the abutment plate 52 protrudes from the support plate 51 to the left side (right direction in FIG. 9) X2 and abuts against the window frame (first window frame) 6A. In the window frame abutment portion 50 of the second bracket 20, the abutment plate 52 protrudes from the support plate 51 to the right side (left direction in FIG. 9) X1 and abuts against the window frame (second window frame) 6B. Also, as shown in FIG. 9, in the working floor 1C of the fourth embodiment, the pressing member 15 is provided separately at the position of each bracket.

According to the fourth embodiment, the work floor 1C and the work floor bracket 2 can be installed between two adjacent windows, so that the floor boards for work can be stably installed not only when attaching shutters to windows or drilling holes in the exterior wall around the window frame to pass air conditioner ducts through, but also when, for example, carrying out construction work on the exterior wall between two adjacent windows.

In the fourth embodiment, the orientation of the abutment plate 52 of the first bracket 10 and the orientation of the abutment plate 52 of the second bracket 20 are not limited to the example in FIG. 8. In a configuration in which the first bracket 10 and the second bracket 20 are further separated in the width direction (X direction), the abutment plate 52 of the first bracket 10 may be protruded from the support plate 51 to the right side (left direction in FIG. 9) X1 and abutted against the right end (not shown) of the window frame 6A, and the abutment plate 52 of the second bracket 20 may be protruded from the support plate 51 to the left side (right direction in FIG. 9) X2 and abutted against the left end (not shown) of the window frame 6B. Also, in the configuration shown in FIG. 8, only the abutment plate 52 of the first bracket 10 may be protruded from the support plate 51 to the right side (left direction in FIG. 9) X1 and abutted against the right end (not shown) of the window frame 6A. Furthermore, in the configuration shown in FIG. 8, only the abutment plate 52 of the second bracket 20 may protrude from the support plate 51 to the left (right direction in FIG. 9) X2 and abut against the left end (not shown) of the window frame 6B.

In addition, a part of the configuration shown in the first to third embodiments may be applied to the work floor 1C of the fourth embodiment. For example, the work floor 1C of the fourth embodiment may be configured to be provided with the protective fence 70 of the second embodiment (see Figures 4 to 6). In addition, if there is no wall or partition between the two windows 5A, 5B shown in Figure 8, and the spacing between the two windows 5A, 5B in the width direction (X direction) is narrow, etc., the work floor 1C of the fourth embodiment may be configured to be provided with the window frame abutment portion 150 of the third embodiment (see Figure 7).

Fifth Embodiment
The work platform 1D of the fifth embodiment differs from the first embodiment in the configuration of the outdoor side and the indoor side centered on the main body arm 11. In the explanation and drawings of the fifth embodiment, the same members and equivalent members as those of the first and second embodiments are given the same reference numerals or the same reference numerals at the end (the last two digits) as those of the first and second embodiments, and duplicated explanations are omitted as appropriate.

Figure 10 is a configuration diagram of the work floor 1D of the fifth embodiment when viewed from the outside of the room. Figure 11 is a cross-sectional view corresponding to the line C-C in Figure 10. Figure 12 is a cross-sectional view corresponding to the line C-C in Figure 10, showing the storage state in which the protective fence 170 is folded up. Figure 13 is a cross-sectional view corresponding to the line D-D in Figure 11, and is a diagram explaining the outer wall abutment part 130. Figure 14 is a configuration diagram of the work floor 1D of the fifth embodiment when viewed from the inside of the room. In the fifth embodiment, the configurations of the first bracket 10 and the second bracket 20 are symmetrical in front view and are substantially the same, so the description of the first bracket 10 also serves as the description of the second bracket 20. Therefore, the reference numerals of the parts constituting the second bracket 20 are the same as the reference numerals of the parts constituting the first bracket 10.

As shown in Figures 10 and 11, in the fifth embodiment of the work floor 1D, the first bracket 10 mainly comprises a main body arm (first main body arm/second main body arm) 11, an outer arm (first outer arm/second outer arm) 12, a support arm 13, an inner arm (first inner arm/second inner arm) 14, an outer edge arm (first outer edge arm/second outer edge arm) 21, a floor plate arm (first floor plate arm) 22, and a support arm 23. It is equipped with a first arm (first intermediate arm/second intermediate arm) 22, an intermediate arm (first intermediate arm/second intermediate arm) 23, an inner wall abutment part (first inner wall abutment part/second inner wall abutment part) 40, a window frame abutment part (first window frame abutment part/second window frame abutment part) 50, a floor board fixing part (first floor board fixing part/second floor board fixing part) 80, a fence fixing part 90, an outer wall abutment part (first outer wall abutment part/second outer wall abutment part) 130, a protective fence (fence part) 170, etc.

As shown in FIG. 11, the main body arm 11 of the first bracket 10 has a first movable part 174 at the end on the outside Z1 and a fence fixing part 90 at approximately the center in the depth direction Z. The main body arm 11 of the second bracket 20 has a second movable part 175 at the end on the outside Z1. The main body arm 11 of the second bracket 20 also has a second movable part 175 at the end on the outside Z1. The main body arm 11 also has a window frame abutment part 50 at the end on the inside Z2. The fence fixing part 90 is a mechanism for fixing the folded protective fence 170 (described later). In this embodiment, an example in which the fence fixing part 90 is provided on the first support member 171 (first bracket 10) will be described, but the fence fixing part 90 may be provided on the second support member 172 (second bracket 20), or may be provided on both the first support member 171 and the second support member 172.

The fence fixing part 90 includes a fixing bracket 91, a nut 92, and a knobbed bolt 93 (see FIG. 12). The fixing bracket 91 is a part for fixing the first support member 171 of the folded guard fence 170, and is formed in an inverted concave shape in side view. The fixing bracket 91 has a bolt hole 91a through which the knobbed bolt 93 passes in the part protruding to the upper side Y1. The height at which the fixing bracket 91 protrudes from the upper side Y1 surface of the main body arm 11 is set so that the first support member 171 is approximately parallel to the main body arm 11 when the guard fence 170 is folded (see FIG. 12). The nut 92 is a part whose inner surface has a female thread that can be screwed into the male thread of the knobbed bolt 93 (described later). The nut 92 is joined to the lower side Y2 surface of the fixing bracket 91. The center of the nut 92 coincides with the center of the bolt hole 91a of the fixing bracket 91. The knobbed bolt 93 is a part for fixing the folded protective fence 170 to the fixing bracket 91. A male thread is formed on the bolt portion (outer surface) of the knobbed bolt 93.

The outer edge arm 21 is a member provided at the end of the outer side Z1 of the main body arm 11 and extending from that end toward the lower side Y2. The floor plate arm 22 is provided to connect the lower end of the outer edge arm 21 and the outer arm 12, and is a member on which the floor plate 3 is installed. The floor plate arm 22 is provided approximately parallel to the main body arm 11 in the depth direction Z. The floor plate arm 22 has a floor plate area S on the upper side Y1 surface (upper surface). As shown in FIG. 10, in the first bracket 10, the right side X1 part of the floor plate 3 is placed on the upper side Y1 surface of the floor plate arm 22. In the second bracket 20, the left side X2 part of the floor plate 3 is placed on the upper side Y1 surface of the floor plate arm 22. As shown in FIG. 11, two floor plates 3 are placed on the floor plate arm 22 along the depth direction Z. The number of floor plates 3 placed on the floor plate arm 22 may be one or three or more.

The intermediate arm 23 is a member provided between the main body arm 11 and the floorboard arm 22 to connect the outer edge arm 21 and the outer arm 12. The intermediate arm 23 extends parallel to the main body arm 11 and the floorboard arm 22 in the depth direction Z. A floorboard fixing part 80 (described later) is provided approximately in the middle of the depth direction Z of the intermediate arm 23, and a shaft hole 23a is formed through which the shaft 82 of the floorboard fixing part 80 passes. The support arm 13 connects the vicinity of the center of the outside side Z1 of the floorboard arm 22 to the vicinity of the end of the lower side Y2 of the outer arm 12.

The floor board fixing part 80 is a mechanism for fixing the floor board 3 placed on the floor board area S of the floor board arm 22. The floor board fixing part 80 is provided at approximately the middle of the intermediate arm 23 in the depth direction Z. The floor board fixing part 80 includes a pressing part 81, a shaft 82, a nut 83, and a dial 84. The pressing part 81 is an approximately cone-shaped part that presses the floor board 3. The shaft 82 is a rod-shaped part, one end of which is connected to the pressing part 81. The dial 84 is attached to the other end of the shaft 82. A male thread that can be screwed into a nut 83 (described later) is formed on the outer circumferential surface of the shaft 82. The shaft 82 passes through the shaft hole 23a of the intermediate arm 23.

The nut 83 is a part having a female thread formed on its inner circumferential surface that can be screwed into the shaft 82. The nut 83 is joined to the upper side Y1 near the center of the depth direction Z of the intermediate arm 23. The center of the nut 83 coincides with the center of the shaft hole 23a of the intermediate arm 23. The dial 84 is a part that an operator operates to press the floor board 3 placed on the floor board arm 22. The dial 84 is attached to the other end of the shaft 82. With the floor board 3 placed on the floor board area S of the floor board arm 22, the operator can fix or release the floor board 3 to the floor board arm 22 by rotating the dial 84 in the tightening or loosening direction. The configuration of the floor board fixing part 80 is not limited to the example of this embodiment, and any configuration that can function equally well may be used.

The outer wall abutment portion 130 is a mechanism that brings at least a portion of the outer wall pressing member 136 (described later) into close contact with the outer wall 4a. The outer wall abutment portion 130 includes a pressing portion 131, a shaft 132, a joint 133, a nut 134, a dial 135, and an outer wall pressing member (first outer wall pressing member/second outer wall pressing member) 136. Of these, the pressing portion 131, the shaft 132, the joint 133, the nut 134, and the dial 135 constitute a pressing member support portion (first pressing member support portion/second pressing member support portion) in this embodiment.

The pressing portion 131 is a part that supports the outer wall pressing member 136. As shown in FIG. 11, the pressing portion 131 is configured to have a substantially concave shape so as to surround the outer wall pressing member 136 on three sides. The outer wall pressing member 136 is a member that presses the outer wall 4a with the pressing portion 131. The outer wall pressing member 136 is preferably made of a material that is unlikely to cause damage to the surface of the outer wall 4a, and for example, wood, resin material, etc. can be used. For example, in the case of the shape shown in FIG. 1, the size of the outer wall pressing member 136 is 350 mm or more and 450 mm or less in the long side direction, 80 mm or more and 110 mm or less in the short side direction, and 38 mm or more and 42 mm or less in thickness. Note that the size of the outer wall pressing member 136 is not limited to the above example, and is appropriately set depending on the size of the entire work floor, the weight of the workers and construction materials to be placed on the work floor, etc.

The shaft 132 is a rod-shaped part, and one end of the shaft 132 is connected to the pressing part 131 via a joint 133. A dial 135 is attached to the other end of the shaft 132. A male screw that can be screwed into a nut 134 (described later) is formed on the outer peripheral surface of the shaft 132. The shaft 132 passes through a shaft hole 12a provided in the outer arm 12. The joint 133 is a part that connects the pressing part 131 and the shaft 132. The joint 133 is, for example, a ball joint. Since the outer wall pressing member 136 is supported by the pressing part 131 connected to the shaft 132 by the joint 133, the outer wall pressing member 136 is not limited to being arranged parallel to the left-right direction X as shown by the solid line in FIG. 13, but can also be arranged parallel to the up-down direction Y as shown by the imaginary line (two-dot chain line) in FIG. 13. In addition, the outer wall pressing member 136 can be positioned at any angle with the joint 133 as the center. Also, although not shown, the outer wall pressing member 136 can be inclined two-dimensionally or three-dimensionally with respect to a plane parallel to the XY axes.

The nut 134 is a part having a female thread formed on its inner circumferential surface that can be screwed with the shaft 132. The nut 134 is joined to the front side Z1 at the end of the lower side Y2 of the outer arm 12. The center of the nut 134 coincides with the center of the shaft hole 12a. The dial 135 is a part that is operated by an operator to adjust the length (spacing) L1 between the outer wall 4a and the outer arm 12. The dial 135 is attached to the other end of the shaft 132. By rotating the dial 135 clockwise or counterclockwise, the distance L1 between the outer arm 12 and the outer wall 4a can be adjusted. Therefore, the pressing member support part including the pressing part 131, the shaft 132, the joint 133, the nut 134, and the dial 135 can bring at least a part of the outer wall pressing member 136 into close contact with the outer wall 4a. The configuration of the outer wall abutting part 130 is not limited to the example of this embodiment, and any configuration may be used as long as it functions in an equivalent manner.

The guard fence 170 is a structure for preventing a worker standing on the floor plate 3 from falling. The guard fence 170 of this embodiment differs from the guard fence 70 of the second embodiment in that the length in the left-right direction X is variable. As shown in Figs. 10 and 11, the guard fence 170 includes a first support member 171, a second support member 172, a third connecting member 173, a fourth connecting member 179, a first movable part 174, and a second movable part 175. The guard fence 170 also includes an upper connecting support part (first upper connecting support part/second upper connecting support part) 100 and a lower connecting support part (first lower connecting support part/second lower connecting support part) 110.

As shown in FIG. 11, the first support member 171 is provided at the end of the main body arm 11 on the outside side Z1 in the first bracket 10, and is a member that extends from said end to the upper side Y1. The first support member 171 is provided with a bolt hole 171a through which the knobbed bolt 93 of the fence fixing part 90 passes. The second support member 172 is provided at the end of the main body arm 11 on the outside side Z1 in the second bracket 20, and is a member that extends from said end to the upper side Y1.

The third connecting member 173 is a member capable of connecting the end of the first support member 171 on the upper side Y1 and the end of the second support member 172 on the upper side Y1. As shown in FIG. 10, the third connecting member 173 has a plurality of bolt holes 173a formed along the longitudinal direction (X direction). The bolt holes 173a are through holes into which the bolt portion of the knobbed bolt 103 (described later) is inserted. The fourth connecting member 179 is a member capable of connecting the first support member 171 and the second support member 172 on the lower side Y2 of the third connecting member 173. As shown in FIG. 10, the fourth connecting member 179 has a plurality of bolt holes 179a formed along the longitudinal direction (X direction). The bolt holes 179a are through holes into which the bolt portion of the knobbed bolt 113 (described later) is inserted.

In the protective fence 170, the first support member 171, the second support member 172, the third connecting member 173, and the fourth connecting member 179 are formed, for example, from metal square pipes. As shown in FIG. 10, the protective fence 170 is configured to have an inverted concave shape when viewed from the front side Z1 by the first support member 171, the second support member 172, and the third connecting member 173.

The first support member 171 is connected to the main body arm 11 via a first movable part 174 (described later). The first movable part 174 is a mechanism that supports the first support member 171 rotatably relative to the main body arm 11 of the first bracket 10. The second support member 172 is connected to the main body arm 11 via a second movable part 175 (described later). The second movable part 175 is a mechanism that supports the second support member 172 rotatably relative to the main body arm 11 of the second bracket 20. Since the configurations of the first movable part 174 and the second movable part 175 are substantially the same, in this embodiment, the description of the first movable part 174 also serves as the description of the second movable part 175.

As shown in FIG. 11, the first movable part 174 includes a support plate 176, a pivot shaft part 177, and a fixed shaft part 178. The support plate 176 is a member that supports the lower side Y2 of the first support member 171. When viewed from the vertical direction Y, the support plate 176 is configured in a substantially concave shape that surrounds the three sides of the first support member 71, the outdoor side Z1, the right side X1, and the left side X2. When viewed from the horizontal direction X, the support plate 176 is configured in a substantially L-shape. The end of the lower side Y2 of the first support member 171 is supported by the support plate 176 so as to abut against the upper side Y1 of the main body arm 11 when the protective fence 70 is in an upright state. The support plate 176 is provided with a through hole through which the pivot shaft part 177 and the fixed shaft part 178 (described later) pass. In FIG. 10 and FIG. 11, the through hole through which the fixed shaft part 178 passes is omitted from illustration. The through hole 176a through which the fixed shaft portion 178 passes is shown in Figure 12.

The pivot shaft 177 is a part that supports the support plate 176 so that it can rotate freely relative to the main body arm 11. The pivot shaft 177 is formed, for example, of a bolt and nut (reference numbers omitted). The main body arm 11 is provided with a through hole (not shown) through which the pivot shaft 177 (bolt) passes. Figure 12 shows the through hole 11a in the main body arm 11 through which the fixed shaft 178 (bolt) passes. The pivot shaft 177 is not detached like the fixed shaft 178 (described below) in the normal use state of the outer frame.

The fixed shaft portion 178 is a part for fixing and releasing the support plate 176 to the main body arm 11. The fixed shaft portion 178 is, for example, composed of a bolt and a nut (reference numerals omitted). As shown in FIG. 11, the protective fence 170 (first support member 171, second support member 172) is set upright and the fixed shaft portion 178 is attached to the support plate 176, so that the protective fence 170 can be put into use. Also, in FIG. 11, when the fixed shaft portion 178 is removed from the support plate 176 and the protective fence 170 is tilted in the direction of the arrow (clockwise direction), the protective fence 170 rotates clockwise around the pivot shaft portion 177. This allows the protective fence 170 to be folded up approximately parallel to the main body arm 11, as shown in FIG. 12.

When the protective fence 170 is folded, as shown in FIG. 12, the bolt hole 171a of the first support member 171 and the bolt hole 91a of the fence fixing part 90 (see FIG. 11) overlap in the vertical direction Y. In this state, the knobbed bolt 93 can be inserted through the bolt hole 171a of the first support member 171, so that the bolt portion of the knobbed bolt 93 can be screwed into the nut 92 of the fence fixing part 90. Then, the knobbed bolt 93 can be rotated in the tightening direction to fasten the knobbed bolt 93 and the nut 92 together. This allows the folded protective fence 170 to be fixed to the fence fixing part 90.

In addition, with the guard fence 170 fixed to the fence fixing portion 90, the knobbed bolt 93 can be rotated in the loosening direction to release the fastening between the knobbed bolt 93 and the nut 92. After releasing the fastening between the knobbed bolt 93 and the nut 92, the knobbed bolt 93 is removed from the first support member 171 and the guard fence 170 is raised in a counterclockwise direction as viewed from the right side X1, so that the guard fence 170 is upright with the main body arm 11, as shown in FIG. 11. In this state, the guard fence 170 can be put into use by attaching the fixing shaft portion 178 to the support plate 176.

Next, the upper connecting support portion 100 and the lower connecting support portion 110 provided on the safety fence 170 will be described.
In the protective fence 170, the upper connecting support part 100 is provided at an end part on the upper side Y1 of the first support member 171 (second support member 172). The lower connecting support part 110 is provided on the lower side Y2 of the third connecting member 173 of the first support member 171 (second support member 172).

The upper connecting support part 100 is a mechanism that movably supports the third connecting member 173 at the end of the upper side Y1 of the first support member 171 (second support member 172). The upper connecting support part 100 includes a pair of support plates 101, a nut 102, and a knobbed bolt 103. The support plate 101 is a part that supports the third connecting member 173 at the end of the upper side Y1 of the first support member 171 (second support member 172). A bolt hole (not shown) through which the bolt portion of the knobbed bolt 103 passes is formed in the support plate 101. As shown in FIG. 11, one support plate 101 is provided on each of the front side Z1 and rear side Z2 at the end of the upper side Y1 of the first support member 171. When viewed from the left-right direction X, the pair of support plates 101 and the end of the upper side Y1 of the first support member 171 are substantially concave so as to surround three sides of the third connecting member 173.

The nut 102 is a part having a female thread formed on its inner circumferential surface that can be screwed into the male thread of the knobbed bolt 103 (described below). The nut 102 is joined to the front side of the support plate 101 located on the front side Z1. The center of the nut 102 coincides with the center of the bolt hole of the support plate 101 located on the front side Z1. The knobbed bolt 103 is a part for fixing the third connecting member 173 between a pair of support plates 101. A male thread is formed on the bolt portion (outer circumferential surface) of the knobbed bolt 103.

The third connecting member 173 and the upper connecting support part 100 can be assembled when the work floor 1 is installed on the window frame 6. First, in FIG. 10, the first bracket 10 and the second bracket 20 are temporarily installed on the window frame 6, and the third connecting member 173 is stored in the left and right upper connecting support parts 100. Next, in the left and right upper connecting support parts 100, the first bracket 10 and/or the second bracket 20 are moved in the left-right direction X so that the bolt holes (not shown) of the support plate 101 and the bolt holes 173a of the third connecting member 173 are aligned. At this time, it is desirable to move the first bracket 10 and/or the second bracket 20 in the left-right direction X so that the left and right protrusions of the third connecting member 173 are approximately the same length.

Next, in the left and right upper connecting support parts 100, the knobbed bolts 103 are inserted through the bolt holes in the support plates 101 on the rear side Z2, and the bolt parts are screwed into the nuts 102 provided on the support plates 101 on the front side Z1. Furthermore, the knobbed bolts 103 are rotated in the tightening direction to fasten the knobbed bolts 103 and the nuts 102. This allows the third connecting members 173 to be fixed to the left and right upper connecting support parts 100.

The lower connection support part 110 is a mechanism that movably supports the fourth connection member 179 on the lower side Y2 of the third connection member 173 of the first support member 171 (second support member 172). As shown in FIG. 10, the lower connection support part 110 is provided between the third connection member 173 and the first movable part 174 and the second movable part 175 in the height direction Y. The lower connection support part 110 includes a support bracket 111, a nut 112, and a knobbed bolt 113. The support bracket 111 is a part that supports the fourth connection member 179. The part of the support bracket 111 that the fourth connection member 179 abuts against is configured to be substantially L-shaped when viewed from the left-right direction X. The substantially L-shaped part of the support bracket 111 and the front side Z1 surface of the first support member 171 are substantially concave so as to surround the fourth connection member 179 on three sides. The support bracket 111 has a bolt hole (not shown) through which the bolt portion of the knobbed bolt 113 passes.

The nut 112 is a part with a female thread formed on its inner circumferential surface that can be screwed into the male thread of the knobbed bolt 113 (described later). The nut 112 is joined to the front side Z1 of the support bracket 111. The center of the nut 112 coincides with the center of the bolt hole of the support bracket 111. The knobbed bolt 113 is a part for fixing the fourth connecting member 179 to the support bracket 111. A male thread is formed on the bolt portion (outer circumferential surface) of the knobbed bolt 113.

The fourth connecting member 179 and the lower connecting support part 110 can be assembled when the work floor 1 is installed on the window frame 6. First, in FIG. 10, the first bracket 10 and the second bracket 20 are temporarily installed on the window frame 6, and the fourth connecting member 179 is stored in the left and right lower connecting support parts 110. Next, in the left and right lower connecting support parts 110, the first bracket 10 and/or the second bracket 20 are moved in the left-right direction X so that the bolt holes (not shown) of the support fittings 111 and the bolt holes 179a of the fourth connecting member 179 are aligned. At this time, it is desirable to move the first bracket 10 and/or the second bracket 20 so that the left and right protrusions of the fourth connecting member 179 are approximately the same length.

Next, in the left and right lower connecting support parts 110, the knobbed bolts 113 are inserted through the bolt holes in the support brackets 111, and the bolt parts are screwed into the nuts 112 on the opposite side. Furthermore, the knobbed bolts 113 are rotated in the tightening direction to fasten the knobbed bolts 113 and the nuts 112. This allows the fourth connecting member 179 to be fixed to the left and right lower connecting support parts 110.

According to the work platform 1D and the work platform bracket 2 of the fifth embodiment described above, for example, the following effects are achieved.
The work platform 1D and the work platform bracket 2 of the fifth embodiment include a floor plate arm 22 (floor plate area S) below the main body arm 11. According to this configuration, the position of the center of gravity of a worker standing on the floor plate 3 on the floor plate arm 22 can be lowered, so that the worker can work in a more stable state.

The work floor 1D and work floor bracket 2 of the fifth embodiment are provided with an intermediate arm 23 between the main body arm 11 and the floor board arm 22. Therefore, even if a worker moves on the floor board 3 or loses balance, the intermediate arm 23 can prevent the worker from falling due to the floor board 3 bouncing up as much as possible.

The work floor 1D and work floor bracket 2 of the fifth embodiment are provided with a floor board fixing part 80 on the intermediate arm 23. Therefore, when a worker moves on the floor board 3 or loses balance, it is possible to more reliably prevent the floor board 3 from shifting in the left-right direction X or from jumping up in the upward direction Y1. In addition, by providing the floor board fixing part 80 on the intermediate arm 23, it is possible to prevent the ends of the outside side Z1 of the two brackets on the lower side Y2 of the main body arm 11 from shifting inward or outward in the left-right direction X. The configuration in which the floor board fixing part 80 is provided on the intermediate arm 23 is particularly effective in a configuration in which a protective fence 170 is not provided on the work floor.

The work floor 1D and the work floor bracket 2 of the fifth embodiment are provided with an exterior wall abutment portion 130 that brings at least a part of the exterior wall pressing member 136 into close contact with the exterior wall 4a. This allows the exterior wall pressing member 136 to be more firmly abutted against the exterior wall 4a by bringing the exterior wall pressing member 136 into close contact with the exterior wall 4a in accordance with the position of a reinforcing material (e.g., a stud, etc.) installed inside the wall 4. Therefore, the work floor 1D and the work floor bracket 2 can be installed more stably on the window frame 6.

In the fifth embodiment of the work floor 1D and the bracket 2 for the work floor, the protective fence 170 is provided with an upper connecting support part 100 that movably supports the third connecting member 173. Therefore, the width of the third connecting member 173 can be appropriately adjusted to match the distance between the first bracket 10 and the second bracket 20 installed in the window frame 6. This makes it possible to make the work floor 1D and the bracket 2 for the work floor compatible with window frames of different width dimensions.

In the work floor 1D and work floor bracket 2 of the fifth embodiment, the protective fence 170 includes a fourth connecting member 179 that connects the first support member 171 and the second support member 172 below the third connecting member 173. This makes it possible to more effectively prevent a worker standing on the floor plate 3 from falling below the third connecting member 173.

In the working floor 1D and the bracket 2 for the working floor of the fifth embodiment, the protective fence 170 includes a lower connecting support part 110 that movably supports the fourth connecting member 179. Therefore, the width of the fourth connecting member 179 can be appropriately adjusted according to the distance between the first bracket 10 and the second bracket 20 installed in the window frame 6. This allows the working floor 1D and the bracket 2 for the working floor to be compatible with window frames of different width dimensions.
The work platform 1D and the work platform bracket 2 of the fifth embodiment may be installed between two adjacent windows, as in the fourth embodiment.

Sixth Embodiment
The working floor 1E of the sixth embodiment differs from the fifth embodiment in the configuration of the window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 250. In addition, the working floor 1E of the sixth embodiment differs from the fifth embodiment in that the floor plate 3a is installed on the main body arm 11, and the floor plate is not set on the floor plate arm 22. In the explanation and drawings of the sixth embodiment, the same members and equivalent members as those of the fifth embodiment are given the same reference numerals or the same reference numerals at the end (the last two digits) of the reference numerals, and duplicated explanations are omitted as appropriate. The working floor 1E of the sixth embodiment is provided with a guard fence 170 (see FIG. 15) as in the fifth embodiment, but may be configured without the guard fence 170 (the same applies to the working floor 1F of the seventh embodiment).

Figure 15 is a cross-sectional view of the work platform 1E of the sixth embodiment. Figure 15 is a cross-sectional view equivalent to Figure 11 of the fifth embodiment. Figure 16 is a conceptual diagram for explaining a method for fixing the floor plate 3a provided on the main body arm 11. Figure 16 corresponds to a plan view of the floor plate 3a installed on the main body arm 11 when viewed from the Y1 side to the Y2 side. In Figure 16, the illustration of the protective fence 170 and the like is omitted. Figure 17 is a cross-sectional view equivalent to the E-E line in Figure 15. Figure 18 is a configuration diagram of the work platform 1E of the sixth embodiment when viewed from the inside of the room.

As shown in FIG. 15, in the work floor 1E of the sixth embodiment, the floor plate 3a is installed on the main body arm 11. As shown in FIG. 16, in the first bracket 10, the right side X1 of the floor plate 3a is placed on the main body arm 11. In the second bracket 20, the left side X2 of the floor plate 3a is placed on the main body arm 11. The floor plate 3a is spanned between the two brackets in the left-right direction X of the work floor 1E. As shown in FIG. 15, in the main body arm 11 configured with the protective fence 170, the area between the first movable part 174 and the fence fixing part 90 is the floor plate area (area S where the floor plate is to be placed). In the main body arm 11 configured without the protective fence 170, almost the entire area of the part protruding from the window frame 6 to the outside Z1 is the floor plate area S (the same applies to the work floor 1F of the seventh embodiment). The number of floor plates 3a installed on the main body arm 11 of the work floor 1E is not limited to one, and multiple plates may be installed side by side or stacked.

As shown in FIG. 16, the floor plate 3a installed on the left and right main body arms 11 can be fixed, for example, by a fastening belt 300. FIG. 16 shows an example in which the fastening belt 300 is fixed to the main body arm 11 and the floor plate 3a by crossing them. The method of fixing the floor plate 3a installed on the main body arm 11 is not limited to the example in FIG. 16, and various methods can be applied. For example, a through hole (not shown) may be formed in each of the floor plate 3a and the main body arm 11, and the floor plate 3a and the main body arm 11 may be fixed with a bolt and a nut in a state where they are stacked. By installing the floor plate 3a on the main body arm 11 as in this embodiment, work on the upper side (Y1 side) of the window frame 6 becomes even easier. The floor plate 3a may be installed on the main body arm 11 in a form in which the floor plate 3 is installed on the floor plate arm 22 (the same applies to the work floor 1F of the seventh embodiment).

Next, the configuration of the window frame abutment portion 250 in the sixth embodiment will be described. The window frame abutment portion 250 is provided at the end of the main body arm 11 on the indoor side Z2, and is a mechanism that abuts against the inner wall 4b on the upper side Y1 of the main body arm 11. The window frame abutment portion 250 in the sixth embodiment abuts against the inner wall 4b around the opening of the window frame 6. The window frame abutment portion 250 includes a support bracket 251, a first nut 252, a second nut 253, a connecting/abutment member 254, a fixing bracket 255, a third nut 256, and a knobbed bolt 257.

As shown in FIG. 15, the support bracket 251 is a generally concave-shaped part capable of holding the connecting/contact member 254. The support bracket 251 is not fixed to the main body arm 11, but is installed so as to be freely movable in the front-rear direction Z. The support bracket 251 is formed with a bolt hole (not shown) through which the bolt portion of the knobbed bolt 257 passes. The first nut 252 and the second nut 253 are parts whose inner circumferential surface is formed with a female thread that can be screwed into the male thread of the knobbed bolt 257. The first nut 252 screws into the knobbed bolt 257 on the front side Z1 of the support bracket 251. The second nut 253 screws into the knobbed bolt 257 on the rear side Z2 of the support bracket 251. The connecting/abutting member 254 is stored in the support bracket 251, and the knobbed bolt 257 is inserted into the bolt hole 254a (described later) of the connecting/abutting member 254. The first nut 252 and the second nut 253 are fastened to the support bracket 251, respectively, to fix the connecting/abutting member 254 to the support bracket 251. In the longitudinal direction (Z direction) of the knobbed bolt 257, the position at which the connecting/abutting member 254 is fixed to the support bracket 251 can be set arbitrarily according to the position at which the first nut 252 and the second nut 253 are fastened. Either the first nut 252 or the second nut 253 may be joined to the support bracket 251. For example, when the connecting/abutting member 254 is made of metal, the support bracket 251 may not be provided.

The connecting/abutting member 254 connects the end of the main body arm 11 of the first bracket 10 on the indoor side Z2 with the end of the main body arm 11 of the second bracket 20 on the indoor side Z2, and abuts against the inner wall 4b around the opening of the window frame 6. In this embodiment, the connecting/abutting member 254 is configured as a common member in the left and right window frame abutting portions (first window frame abutting portion/second window frame abutting portion) 250. As shown in Figures 17 and 18, the connecting/abutting member 254 has multiple bolt holes 254a along the longitudinal direction (X direction). The bolt holes 254a are through holes into which the bolt portion of the knobbed bolt 257 is inserted. Since the connecting/abutting member 254 has multiple bolt holes 254a along the longitudinal direction, the position at which the connecting/abutting member 254 is fixed to the support bracket 251 can be adjusted by appropriately selecting the bolt hole 254a into which the knobbed bolt 257 is inserted. As shown in FIG. 17, the connecting/contact member 254 has contact pieces 254b on both ends in the left-right direction X, on the front side Z1 of each. The contact pieces 254b are members that contact the inner wall 4b. The connecting/contact member 254 can be made of, for example, wood, resin, metal, etc.

The fixing bracket 255 is a part that supports the knobbed bolt 257. The fixing bracket 255 is joined to the end of the main body arm 11 on the indoor side Z2. As shown in FIG. 15, the fixing bracket 255 is configured to be approximately L-shaped when viewed from the left-right direction X. The fixing bracket 255 has a bolt hole (not shown) through which the bolt portion of the knobbed bolt 257 passes. The third nut 256 is a part on whose inner circumferential surface is formed a female thread that can be screwed into the male thread (bolt portion) of the knobbed bolt 257. The third nut 256 is screwed into the knobbed bolt 257 on the rear side Z2 of the fixing bracket 255. The knobbed bolt 257 is a part for abutting the connecting/contact member 254 (contact piece 254b) against the inner wall 4b. The bolt portion (outer circumferential surface) of the knobbed bolt 257 has a male thread.

The window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 250 of the sixth embodiment can be assembled when the work floor 1E is installed on the window frame 6. First, the first bracket 10 and the second bracket 20 are temporarily installed on the window frame 6, and the connecting/abutment member 254 is stored in the left and right support brackets 251. Next, the first bracket 10 and/or the second bracket 20 are moved in the left and right direction X so that the bolt holes (not shown) of the support brackets 251 and the bolt holes 254a of the connecting/abutment member 254 match and are arranged approximately evenly in the left and right direction X of the window frame 6. At this time, for example, as shown in FIG. 18, the first bracket 10 and/or the second bracket 20 are moved in the left and right direction X so that the left and right abutment pieces 254b of the connecting/abutment member 254 can abut against the inner wall 4b, respectively.

After the first bracket 10 and the second bracket 20 are moved to appropriate positions in the left-right direction X, the first nut 252 and the second nut 253 are tightened to the support bracket 251 side at the left and right window frame abutment parts 250, respectively, to fix the connecting/abutment member 254 to the support bracket 251. Next, at the left and right window frame abutment parts 250, the third nut 256 is loosened to provide a gap between the fixing bracket 255 and the third nut 256, and in this state, the knobbed bolt 257 is pushed forward in the Z1 direction to move the connecting/abutment member 254 together with the support bracket 251 in the Z1 direction. This allows the connecting/abutment member 254 (abutment piece 254b) to abut against the inner wall 4b around the opening of the window frame 6. In this state, the third nut 256 is tightened to fix the position in the depth direction Z of the connecting/abutment member 254 abutted against the inner wall 4b.

When the first bracket 10 and the second bracket 20 are provided with a guard fence 170, the guard fence 170 can be attached before the window frame contact portion 250 is attached when the work floor 1E is installed on the window frame 6. In this case, it is desirable to align the positions of the bolt holes 254a of the connecting/contact member 254 (see FIG. 18), the positions of the bolt holes 173a of the third connecting member 173, and the positions of the bolt holes 174a of the fourth connecting member 179 (see FIG. 10) in the longitudinal direction (X direction). The same applies to the work floor 1F of the seventh embodiment described later.

Seventh Embodiment
The work floor 1F of the seventh embodiment differs from that of the fifth embodiment in the configuration of the window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 350. In the explanation and drawings of the seventh embodiment, the same reference numerals or the same reference numerals with the same suffix (the last two digits) as those of the fifth and sixth embodiments are used for the same members and equivalent members, and duplicate explanations are omitted as appropriate.

Figure 19 is a cross-sectional view of the work floor 1F of the seventh embodiment. Figure 19 is a cross-sectional view corresponding to Figure 11 of the fifth embodiment. Figure 20 is a cross-sectional view corresponding to line F-F of Figure 19. Figure 21 is a configuration diagram of the work floor 1F of the seventh embodiment as viewed from the inside of the room.

The window frame abutment 350 is a mechanism provided at the end of the main body arm 11 on the indoor side Z2 and abuts against the inner wall 4b on the upper side Y1 of the main body arm 11. The window frame abutment 350 of the seventh embodiment abuts against the inner wall around the opening of the window frame 6. The window frame abutment 350 includes a support bracket 351, a first nut 352, a knobbed bolt 353, and a connecting member 354. The window frame abutment 350 also includes an abutment piece 356, a second nut 357, and a knobbed bolt 358.

As shown in FIG. 19, the support bracket 351 is a part with a generally concave shape capable of holding the connecting member 354. The support bracket 351 is joined to the end of the main body arm 11 on the indoor side Z2. A bolt hole (not shown) through which the bolt portion of the knobbed bolt 353 passes is formed on the front side Z1 and rear side Z2 of the support bracket 351. The first nut 352 is a part on whose inner circumferential surface is formed a female thread that can be screwed into the male thread of the knobbed bolt 358. The first nut 352 is joined to the front side Z1 of the support bracket 351. The center of the first nut 352 coincides with the center of the bolt hole of the support bracket 351. The knobbed bolt 353 is a part for fixing the connecting member 354 to the support bracket 351. A male thread is formed on the bolt portion (outer circumferential surface) of the knobbed bolt 353.

The connecting member 354 is a member that connects between the end of the main body arm 11 of the first bracket 10 on the indoor side Z2 and the end of the main body arm 11 of the second bracket 20 on the indoor side Z2. In this embodiment, the connecting member 354 is configured as a common member in the left and right window frame abutment parts (first window frame abutment part/second window frame abutment part) 350. As shown in Figures 20 and 21, the connecting member 354 has multiple bolt holes 354a along the longitudinal direction (X direction). The bolt holes 354a are through holes into which the bolt parts of the knobbed bolts 353 or 358 (described later) are inserted. The connecting member 354 can be made of, for example, wood, resin, metal, etc. Although not shown, when the connecting member 354 is made of wood or resin, it is desirable to provide a metal plate or the like on the surface that contacts the second nut 357 (described later).

The abutment piece 356 is a member that abuts against the inner wall 4b around the opening of the window frame 6. The second nut 357 is a part with a female thread formed on its inner circumferential surface that can be screwed into the male thread (bolt portion) of the knobbed bolt 358. The second nut 357 is screwed onto the knobbed bolt 358 on the rear side Z2 of the connecting member 354. The knobbed bolt 358 is a part for abutting the abutment piece 356 against the inner wall 4b. A male thread is formed on the bolt portion (outer circumferential surface) of the knobbed bolt 358. The front side Z1 end of the knobbed bolt 358 is rotatably connected to the abutment piece 356.

The window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 350 of the seventh embodiment can be assembled when the work floor 1F is installed on the window frame 6. First, the first bracket 10 and the second bracket 20 are temporarily installed on the window frame 6, and the connecting member 354 is stored so as to span between the left and right support brackets 351. Next, the first bracket 10 and/or the second bracket 20 are moved in the left-right direction X so that the bolt holes (not shown) of the support brackets 351 and the bolt holes 354a of the connecting member 354 match and are of approximately equal length in the left-right direction X of the window frame 6 at the left and right window frame abutment portions 350. At this time, for example, as shown in FIG. 21, the first bracket 10 and/or the second bracket 20 are moved in the left-right direction X so that the left and right abutment pieces 356 of the connecting member 354 can abut against the inner wall 4b, respectively. In the left-right direction X of the connecting member 354, the position at which the abutment piece 356 abuts against the inner wall 4b can be appropriately adjusted by changing the position of the bolt holes 354a provided on both ends of the connecting member 354.

After moving the first bracket 10 and the second bracket 20 to appropriate positions in the left-right direction X, the knobbed bolt 353 is inserted through a bolt hole (not shown) on the rear side Z2 of the support bracket 351 at the left and right window frame abutment parts 350, and the bolt portion is screwed into the first nut 352 on the front side Z1 of the support bracket 351. Then, the knobbed bolt 353 is rotated in the tightening direction to fasten the knobbed bolt 353 and the first nut 352. This allows the connecting member 354 to be fixed to the left and right support brackets 351.

Next, the second nuts 357 are loosened at the left and right window frame abutment portions 350 to provide a gap between them and the connecting member 354, and in this state, the knobbed bolt 358 is pushed forward in the Z1 direction to move the abutment piece 356 in the Z1 direction. At this time, it is desirable to make the length (spacing) between the abutment piece 356 and the inner wall 4b approximately equal at both ends of the connecting member 354. This allows the abutment piece 356 to abut against the inner wall 4b. In this state, the second nuts 357 are tightened to fix the position in the depth direction Z of the abutment piece 356 abutting against the inner wall 4b.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and various modifications and variations are possible, such as the modified forms described below, which are also included within the technical scope of the present invention. Furthermore, the effects described in the embodiments are merely a list of the most favorable effects resulting from the present invention, and are not limited to those described in the embodiments. The above-mentioned embodiments and the modified forms described below can be used in appropriate combinations, but detailed explanations will be omitted. In describing the modified forms, the first to seventh embodiments will also be referred to as "embodiments" as appropriate, except when describing the modified forms by assigning specific embodiment numbers.

(Modifications)
In the first bracket 10 and the second bracket 20 of the first to fourth embodiments, the positions at which the first connecting member 16 and the second connecting member 17 are connected may be variable. With such a configuration, the first bracket 10 and the second bracket 20 can be installed at more appropriate positions in accordance with the length of the window in the width direction X. In the first bracket 10 and the second bracket 20 of the fifth to seventh embodiments, the first connecting member 16 and/or the second connecting member 17 may be provided.

In the embodiment, the first bracket 10 and the second bracket 20 may not have the outer wall abutment portion 30 (130). In that case, for example, the end of the lower side Y2 of the support arm 13 may be further extended to abut against the outer wall 4a. In addition, the vicinity of the end of the upper side Y1 of the outer arm 12 (near the part joined to the main body arm 11) may be formed into a crank shape so that the outer arm 12 abuts against the outer wall 4a so as not to interfere with the window frame 6. Furthermore, if the window frame 6 does not protrude to the outside Z1, the outer arm 12 may be provided at a position where it abuts against the outer wall 4a. Even in such a configuration, the load of the worker standing on the floor board 3 can be received by the window frame abutment portion 50, so that the work floor 1 and the work floor bracket 2 can be stably installed on the window frame 6. In this way, the exterior wall abutment portion 30 (130) is not a required component of the work floor bracket 2 of this embodiment, and the bracket can be stably installed on the window frame 6 even without the exterior wall abutment portion 30 (130).

In the embodiment, the first bracket 10 and the second bracket 20 may not be provided with the inner wall abutment portion 40. In that case, for example, the lower side Y2 of the inner arm 14 may be formed into a crank shape, and the lower portion may be configured to directly abut against the inner wall 4b.
In the protective fence 70 of the second embodiment, a generally X-shaped brace may be provided diagonally when viewed from the front (see FIG. 4), or a safety net or the like may be provided in the area surrounded by the first support member 71, the second support member 72, and the third connecting member 73. Such a configuration may also be applied to the protective fence 170 of the fifth to seventh embodiments.

In the work floor bracket 2 of the fifth to seventh embodiments, a mechanism similar to the fourth connecting member 179 and the lower connecting support portion 110 may be added to the outer edge arm 21. This makes it possible to prevent the ends of the two brackets on the outside side Z1 of the lower side Y2 of the main body arm 11 from shifting inward or outward in the left-right direction X. This configuration is particularly effective, for example, in a configuration in which the second connecting member 17 (first embodiment/see Figure 2) is not provided on the main body arm 11.

In the fifth to seventh embodiments of the work floor bracket 2, instead of the bolt hole 173a of the third connecting member 173, a bolt elongated hole extending along the longitudinal direction of the third connecting member 173 may be provided, or both the bolt hole 173a and the bolt elongated hole may be provided. Similarly, instead of the bolt hole 179a of the fourth connecting member 179, a bolt elongated hole extending along the longitudinal direction of the fourth connecting member 179 may be provided, or both the bolt hole 179a and the bolt elongated hole may be provided.

In the fifth to seventh embodiments of the work floor bracket 2, the nut 43 of the inner wall abutment portion 40 may not be joined to the inner arm 14, but may simply be screwed onto the shaft 42 on the indoor side Z2 of the inner arm 14. In this embodiment, the length between the inner wall 4b and the inner arm 14 can be adjusted by pressing the dial 44 against the inner wall 4b and rotating the nut 43 in the tightening direction until the nut 43 abuts against the inner wall 4b.

In the fifth to seventh embodiments of the work floor bracket 2, the nut 83 of the floor board fixing part 80 may not be joined to the intermediate arm 23, but may simply be screwed onto the shaft 82 above the intermediate arm 23. In this embodiment, the floor board 3 can be fixed by pressing the dial 84 against the floor board 3 and rotating the nut 83 in the tightening direction until the nut 83 abuts against the intermediate arm 23.

In the fifth to seventh embodiments of the work floor bracket 2, the nut 134 of the outer wall abutment portion 130 may not be joined to the outer arm 12, but may simply be screwed onto the shaft 132 on the outside side Z1 of the outer arm 12. In this embodiment, the length between the outer wall 4a and the outer arm 12 can be adjusted by pressing the dial 135 against the outer wall 4a and rotating the nut 134 in the tightening direction until the nut 134 abuts against the outer wall 4a.

The configuration of the window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 250 in the sixth embodiment may be applied to the window frame abutment portion in the first and second embodiments. Also, the configuration of the window frame abutment portion (first window frame abutment portion/second window frame abutment portion) 350 in the seventh embodiment may be applied to the window frame abutment portion in the first and second embodiments.

1, 1A, 1B, 1C, 1D, 1E, 1F: Work floor, 2: Work floor bracket, 3, 3a: Floor board, 10: First bracket, 11: Main body arm, 12: Outer arm, 14: Inner arm, 15: Pressing member, 16: First connecting member, 17: Second connecting member, 20: Second bracket, 21: Outer edge arm, 22: Floor board arm, 23: Intermediate arm, 30, 130: Outer Wall contact part, 40: Inner wall contact part, 50, 150, 250, 350: Window frame contact part, 70, 170: Protective fence (fence part), 71: First support member, 72: Second support member, 73, 173: Third connecting member, 74: First movable part, 75: Second movable part, 80: Floor board fixing part, 90: Fence fixing part, 100: Upper connecting support part, 110: Lower connecting support part, 179: Fourth connecting member

Claims (13)

A work floor bracket to be installed in a window frame of an opening in a building,
a first main body arm extending from the indoor side to the outdoor side on the window frame, a first outer arm provided along an outer wall of the building on the outdoor side of the first main body arm, a first inner arm provided along an inner wall of the building on the indoor side of the first main body arm, and a first bracket provided on one side in the width direction of the window frame, the first bracket comprising a first window frame abutment portion provided on the indoor side of the first main body arm and abutting against the window frame and/or an inner wall around an opening of the window frame;
a second main body arm extending from the indoor side to the outdoor side on the window frame, a second outer arm provided on the outdoor side of the second main body arm so as to follow the outer wall of the building, a second inner arm provided on the indoor side of the second main body arm so as to follow the inner wall of the building, and a second bracket provided on the indoor side of the second main body arm and including a second window frame abutment portion abutting against the window frame and/or an inner wall around an opening of the window frame, and installed on the other side in the width direction of the window frame;
Equipped with
The first bracket is
A first outer edge arm is provided at an end portion of the first main body arm on the outdoor side and extends downward from the end portion;
A first floor board arm is provided to connect between a lower end of the first outer edge arm and the first outer arm, and has a floor board placement area on an upper surface thereof;
a first intermediate arm provided between the first main body arm and the first bed plate arm so as to connect between the first outer edge arm and the first outer arm,
The second bracket is
A second outer edge arm is provided at an end portion of the second main body arm on the outdoor side and extends downward from the end portion;
A second floor board arm provided to connect between a lower end of the second outer edge arm and the second outer arm and having a floor board placement area on an upper surface thereof;
a second intermediate arm provided between the second main body arm and the second bed plate arm so as to connect between the second outer edge arm and the second outer arm,
The first intermediate arm includes a first floor board fixing portion that fixes a floor board to be placed in the floor board placement area of the first floor board arm,
The second intermediate arm is a bracket for a work floor having a second floor board fixing portion that fixes a floor board to be placed in the floor board intended placement area of the second floor board arm . The first outer arm includes a first outer wall abutment portion that abuts against the outer wall at a position spaced downward from the window frame,
The second outer arm includes a second outer wall abutment portion that abuts against the outer wall at a position spaced below the window frame.
The bracket for a work platform according to claim 1. the first inner arm includes a first inner wall abutment portion that abuts against the inner wall at a position spaced downward from the window frame,
The second inner arm includes a second inner wall abutment portion that abuts against the inner wall at a position spaced downward from the window frame.
The bracket for a work platform according to claim 1. a first connecting member that connects between a portion of the first main body arm near a window frame and a portion of the second main body arm near a window frame;
The bracket for a work platform according to claim 1. a second connecting member that connects between an end portion of the first main body arm that is on the outdoor side of the window frame and an end portion of the second main body arm that is on the outdoor side of the window frame;
The bracket for a work platform according to claim 1. A first support member provided at an end portion of the first main body arm on the outdoor side and extending upward from the end portion;
A second support member provided at an end portion of the second main body arm on the outdoor side and extending upward from the end portion;
and a third connecting member connecting between an upper end portion of the first support member and an upper end portion of the second support member.
The bracket for a work platform according to claim 1. The fence portion is
a first movable portion that supports the first support member rotatably relative to the first main body arm;
a second movable portion that supports the second support member rotatably relative to the second main body arm;
Equipped with
The bracket for a work floor according to claim 6. The fence portion is
a first upper connecting support portion that movably supports one side of the third connecting member at an upper end portion of the first support member;
a second upper connecting support portion that movably supports the other side of the third connecting member at an upper end portion of the second support member,
The bracket for a work floor according to claim 6. The fence portion includes a fourth connecting member below the third connecting member, the fourth connecting member connecting between the first support member and the second support member.
The bracket for a work floor according to claim 6. the first support member includes a first lower connection support portion that movably supports one side of the fourth connection member,
The second support member includes a second lower connecting support portion that movably supports the other side of the fourth connecting member.
The bracket for a work floor according to claim 9. The first outer wall abutment portion is
a first outer wall pressing member that contacts the outer wall;
a first pressing member support portion that brings at least a portion of the first outer wall pressing member into close contact with the outer wall,
The second outer wall abutment portion is
a second outer wall pressing member that contacts the outer wall;
A second pressing member support portion that brings at least a portion of the second outer wall pressing member into close contact with the outer wall.
The bracket for a work platform according to claim 2. A bracket for a work floor to be installed on a first window frame of a first opening and a second window frame of a second opening adjacent to each other in a building,
a first main body arm extending from the indoor side to the outdoor side on the first window frame, a first outer arm provided along an outer wall of the building on the outdoor side of the first main body arm, a first inner arm provided along an inner wall of the building on the indoor side of the first main body arm, and a first bracket provided on one or the other side in the width direction of the first window frame, the first bracket comprising a first window frame abutment portion provided on the indoor side of the first main body arm and abutting against the first window frame and/or an inner wall around the first opening of the first window frame;
a second main body arm extending from the indoor side to the outdoor side on the second window frame, a second outer arm provided on the outdoor side of the second main body arm so as to follow the outer wall of the building, a second inner arm provided on the indoor side of the second main body arm so as to follow the inner wall of the building, and a second bracket provided on the indoor side of the second main body arm and including a second window frame abutment portion abutting the second window frame and/or an inner wall around the second opening of the second window frame, and installed on one or the other side in the width direction of the second window frame;
Equipped with
The first bracket is
A first outer edge arm is provided at an end portion of the first main body arm on the outdoor side and extends downward from the end portion;
A first floor board arm is provided to connect between a lower end of the first outer edge arm and the first outer arm, and has a floor board placement area on an upper surface thereof;
a first intermediate arm provided between the first main body arm and the first bed plate arm so as to connect between the first outer edge arm and the first outer arm,
The second bracket is
A second outer edge arm is provided at an end portion of the second main body arm on the outdoor side and extends downward from the end portion;
A second floor board arm provided to connect between a lower end of the second outer edge arm and the second outer arm and having a floor board placement area on an upper surface thereof;
a second intermediate arm provided between the second main body arm and the second bed plate arm so as to connect between the second outer edge arm and the second outer arm,
The first intermediate arm includes a first floor board fixing portion that fixes a floor board to be placed in the floor board placement area of the first floor board arm,
The second intermediate arm is a bracket for a work floor having a second floor board fixing portion that fixes a floor board to be placed in the floor board intended placement area of the second floor board arm . A bracket for a work floor according to claim 1 or 12;
A floor board to be placed on the floor board placement area of the first main body arm and the floor board placement area of the second main body arm of the work floor bracket;
A work floor equipped with:

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