JPS6315508Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a method for replacing existing sashes such as steel sashes installed in openings in building frames with new sashes such as aluminum sashes due to their service life. This invention relates to a sash removal jig used for removal.

[Conventional technology]

When replacing existing sashes such as steel sashes installed in the openings of reinforced concrete buildings with new sashes such as aluminum sashes due to their service life,
Conventionally, a method of removing an existing sash and then installing a new sash has been generally practiced.

In addition, recently, there has been a trend to replace steel sashes with aluminum sashes because aluminum sashes are lighter, less likely to rust, and have better sound insulation and airtightness.

By the way, existing sashes such as steel sashes installed in the openings of reinforced concrete buildings are installed deep inside the opening and are anchored to the reinforcing bars within the building frame, so removing the existing sashes is extremely troublesome. It was hot from work.

Conventionally, as a method for removing an existing sash of this type, for example, the method described in Japanese Utility Model Application Publication No. 56-124136 is generally known.

The method described in the publication involves hooking the lower frame hook 4 and the upper frame hook 14 connected by a chain 7 to the lower frame 23 and upper frame 22 of the existing sash, respectively, and attaching them to the lower frame hook 4 side. The chain 7 is pulled by the attached hydraulic jack 2, and the lower frame 23 and upper frame 22 are forcibly pulled from the structure and removed.

[Problem that the invention attempts to solve]

However, in the method described in the above publication, since only one lower frame hook 4 is attached, the lower frame hook 4
If the line of action of the tensile force and the center of gravity of the lower frame 23 do not match well, the lower frame 23 may be twisted
3 could not be peeled off from the structure.

In addition, the upper frame hook 14 is attached by pinning its base end to the bracket 13 with the pivot support 15, and is configured so that it cannot be moved laterally at all, so if the upper frame is too wide in width, It may not be possible to use it. For this reason, it is necessary to prepare several types of upper frame hooks 14 with different spacings and to replace them each time depending on the size of the upper frame, which is extremely troublesome to handle.

This idea was proposed to solve the above-mentioned conventional problems, and it is possible to reliably remove the upper frame of the existing sash without damaging the structure, and it is also possible to remove the upper frame of the existing sash without damaging the structure. , size (width)
To provide a sash removal jig that can be used for upper frames of different sizes.

[Means for solving problems]

This invention relates to a jig for removing existing sashes, and consists of two pull-out plates that have locking grooves at their tips that can be locked to the left and right lip pieces of the upper frame, each of which has a roughly lip-groove cross section of the existing sash. are arranged opposite to each other, and the proximal end of the pull-out plate is connected by a connecting pin so as to be movable laterally in the longitudinal direction of the connecting pin, and the hook of the traction machine, which is locked to the connecting pin, is attached to the pull-out plate. The above object is achieved by threading the hook fixing screw which can come into contact with the side surface.

〔Example〕

Hereinafter, this invention will be explained with reference to an illustrated embodiment. The sash removal jig 1 is composed of two pull-out plates 2, 2, a connecting pin 3, two hook fixing screws 4, 4, etc. ing. The drawn plate 2 is formed into a substantially rectangular plate shape with a thickness and width sufficient to withstand high tensile force.

In addition, an existing sash 5 is attached to the tip of the pull-out plate 2.
Locking grooves 8, 8 are formed which can be engaged with the left and right lip pieces 7, 7 of the upper frame 6, which are formed in a substantially lip groove shape in cross section.

The locking groove 8 opens directly downward and is formed continuously in the width direction of the pull-out plate 2 (in the front-rear direction in the drawing).

The connecting pin 3 is inserted horizontally into a hole (not shown) formed at the base end of the pull-out plates 2, 2. In such a case, the pull-out plates 2, 2 are configured to be movable in the longitudinal direction of the connecting pin 3, and the distance between the left and right pull-out plates 2, 2 can be freely adjusted, and the setscrews 9, 9 The structure is such that the connecting pin 3 can be fixed at any position in the longitudinal direction.

Further, the connecting pin 3 is formed into a substantially cylindrical shape and has sufficient bending strength.

The hook fixing screws 4, 4 are attached to the left and right pull-out plates 2, 2.
are screwed horizontally from the outside to the inside.

Further, the hook fixing screws 4, 4 are located on the side (see FIG. 1) or above (see FIG. 2) of the connecting pin 3 and are screwed together.

The hook fixing screws 4, 4 are attached to a hook 10, which will be described later.
This screw has the function of fixing the connecting pin 3 to the center part of the connecting pin 3 and keeping the distance between the left and right pull-out plates 2, 2 constant.

Therefore, the function of maintaining the distance between the left and right pull-out plates 2, 2 is greater when the hook fixing screws 4, 4 are screwed together as far as possible above the connecting pin 3.

Note that numeral 11 is a spacing adjustment screw for keeping the spacing between the left and right pull-out plates 2, 2 constant, similar to the hook fixing screws 4, 4.

The spacing adjustment screw 11 is connected to the drawing plates 2, which are opposite to each other.
2, it is screwed into approximately the midsection of one of the pull-out plates 2, and its tip is in contact with the side surface of the other pull-out plate 2. By appropriately changing the length of the protruding portion 11a of the spacing adjustment screw 11, the spacing between the pull-out plates 2, 2 can be maintained constant.

In such a configuration, next, the existing sash 5
The method for removing the upper frame 6 will be explained (see Fig. 2).

The two pull-out plates 2, 2 are arranged facing each other with the locking grooves 8, 8 facing outward, and the connecting pin 3 is inserted into the hole at the base end of the pull-out plates 2, 2.

Further, the hook fixing screws 4, 4 are screwed into the left and right pull-out plates 2, 2, and the interval adjusting screw 11 is screwed into one of the pull-out plates 2.

In this case, the distance between the left and right pull-out plates 2, 2 is adjusted to the distance between the left and right lip pieces 7, 7 of the upper frame 6.

The assembled sash removal jig 1 has a locking groove 8, 8 between the left and right lip pieces 7, 7 of the upper frame 6, and a lip piece 7,
7, and tighten the setscrews 9, 9 to fix the left and right pull-out plates 2, 2 to the connecting pin 3.

Next, by hooking the hook 10 onto the connecting pin 3 and strongly tightening the left and right hook fixing screws 4, 4, the hook 10 is fixed to the center of the connecting pin 3, and the distance between the left and right pull-out plates 2, 2 is maintained. .

Further, the distance adjustment screw 11 is screwed in, and its tip is brought into contact with the other pull-out plate 2 to determine the distance between the left and right pull-out plates 2, 2. In addition, the interval adjustment screw 1
1 is not necessarily required.

Then, by reciprocating the handle 13 of the traction machine 12 up and down to gradually shorten the chain 14, the upper frame 6 is forcibly pulled and removed. Reference numeral 15 is a support, and the support 15 has a bracket 1.
The other end of the chain 14 is connected to 6. Note that a reciprocating cylinder may be used instead of the traction machine 12.

[Effect of idea]

Since this invention has the above configuration, it has the following effects.

The two pull-out plates are connected to the left and right lip pieces of the upper frame, each of which has a roughly lip groove-shaped cross section, of the existing sash. At the same time, a traction machine is attached to the approximate center of the connecting pin installed at the base end of the left and right pull-out plates. A hook is hung thereon, and the hook can be firmly fixed to the center of the connecting pin by a hook fixing screw, and the distance between the left and right pull-out plates can be maintained constant.

Therefore, the pulling force by the traction machine can be applied to approximately the center of gravity of the upper frame, and thereby the upper frame can be reliably removed from the structure without twisting or the like.

In addition, the two pull-out plates can be connected to the left and right lip pieces of the upper frame using a hook type, making installation easy, and the spacing between the left and right pull-out plates can be changed freely. Therefore, one type can be used for upper frames of different sizes (widths), making it extremely practical.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of this invention; Figure 1 is a front view of the sash removal jig, and Figure 2 is a vertical cross-section of the opening showing how the sash removal jig is used. It is a diagram. 1...Sash removal jig, 2...Drawing plate, 3
... Connection pin, 4 ... Fixing screw, 5 ... Existing sash, 6 ... Upper frame, 7 ... Lip piece, 8 ... Locking groove, 9 ... Set screw, 10 ... Hook, 11 ...
Spacing adjustment screw, 12... Traction machine, 13... Handle, 14... Chain, 15... Strut, 16...
Bracket.

Claims (1)

[Scope of utility model registration request] Two pull-out plates 2, 2 are provided opposite each other and have locking grooves 8, 8 at their tips that can be locked to the left and right lip pieces 7, 7 of the upper frame 6, which are formed in the cross section of the existing sash 5. At the same time, the proximal ends of the pull-out plates 2, 2 are connected by a connecting pin 3 so as to be movable laterally in the longitudinal direction of the connecting pin 3, and the connecting pin 3 is connected to the pull-out plates 2, 2 so as to be movable laterally in the longitudinal direction of the connecting pin 3. A sash removal jig characterized in that hook fixing screws 4, 4 are screwed together and can come into contact with the side surface of a hook 10 of a traction machine that is locked to the traction machine.