JP6541153B2 - Release tool - Google Patents

Description

  The present invention releases the engagement between the field edge and the field edge by releasing the engagement of the connecting clip connecting the field edge and the field edge by engaging the field edge and the field edge. Related to the disconnection device.

  An elongated rectangular flat-plate-like main body, and a flat plate-shaped first projection which protrudes from a part of one edge of the main-body in the width direction by a predetermined dimension, and flat And cutting a long and thin rectangular flat material having a predetermined width and having a second projection which protrudes by a predetermined dimension from the tip of the first projection in a direction orthogonal to the first projection A field edge receiver integrally formed by bending is disclosed (see Patent Document 1).

  In the field edge holder disclosed in Patent Document 1, the field edge is connected using a connecting clip at a portion where the first protrusion and the second protrusion are not provided. A plurality of field edges arranged substantially equally spaced in the width direction are located directly below the plurality of field edges received at substantially equal intervals in the front-rear direction, with the field edges substantially orthogonal to the field received The first edge of the connecting clip engages with the upper flange of the field edge holder, and the second hook of the connecting clip engages with the engagement lip of the field edge, whereby the field edge is connected with the field edge.

JP, 2013-32644, A

  When repairing and dismantling the ceiling, it is necessary to release the connection between the edge and the edge. However, in the conventional ceiling repair and dismantling work, the dismantling worker who steps on the step outside the ceiling plate After that, the bare edge and the bare edge are separated by force with the bare hand or the bar in the vertical direction (to separate) and while the bare edge and the bare edge are deformed, the engagement between the bare edge and the first hook and the bare The engagement between the edge engagement lip and the second hook was forcibly released.

  In the release work in the conventional repair work and dismantling work, the dismantling work moves the stepladder to a predetermined position, and while repeating getting on and off the stepladder, disconnects the connection between the field rim and the field rim, and the floor It is not possible to release the connection between the field edge and the field edge when it is located in the area, and it takes a lot of effort to release the connection between the field edge and the field edge. It took time and effort to release it. In addition, when the connection between the field rim and the field rim is released in the conventional release operation, the field rim and the field rim deform irregularly, and the field rim and the field rim do not retain the original shape, and the field rim and the field rim I could not reuse the rim. Furthermore, when treating a field border or a field border as waste, it is difficult to pack the deformed field border or field border, and it is difficult to pack a plurality of field border or field border together, and it takes time for disposal And it took time.

  The object of the present invention is to release the connection between the field edge and the field edge efficiently without releasing the connection between the field edge and the field edge, and without requiring labor and time. It is an object of the present invention to provide a disconnecting device that can Another object of the present invention is to disconnect the connection between the field rim and the field rim without irregular deformation of the field rim or the field rim, and to release the connection between the field rim and the field rim. An object of the present invention is to provide a disconnecting device that enables reuse. Another object of the present invention is to be able to easily pack a field rim and a field rim when discarding a disconnected field rim and a field rim, and discarding without requiring labor and time. It is an object of the present invention to provide a decoupling device which enables processing.

  The premise of the present invention for solving the above-mentioned problems is the engagement of a connection clip for engaging a field edge reception and a field edge overlapping immediately below the field reception edge to connect the field reception and field edge. It is a connection release tool that releases the connection and releases the connection between the field rim and the field rim.

The feature of the present invention in the above premise is that the connection release tool has a long operation rod extending in the vertical direction, a pivoting central axis extending in the width direction from the upper end of the operating rod, and predetermined dimensions upward from the pivoting central axis A release plate extending apart from the upper end of the operating rod by a predetermined distance away from the pivoting central axis and extending downward from the upper end of the operating rod, and located below the release plate and extending forward from the upper end of the operating rod , formed from a support shaft for supporting the field edge receiving, at the connection release tool, while decoupling plate as pivot about the pivot axis to pivot in a direction away from the field edge receiving, field uncoupling plate joining clip While moving in a direction away from the edge support, and while the support shaft pivots in a direction away from the field edge, the support shaft lifts the field edge support upward to separate the field edge support and the field edge vertically. In the connecting clip In the engagement is released for field edge receiving.

In one example of the present invention, the connecting clip includes a connecting portion facing the web of the edge support, a first hook located above the connecting portion and engaged with the upper flange of the edge receiving portion, and a lower portion of the connecting portion. And a pair of second hooks engaged with the engagement lip of the side edge, and in the connection release tool, the connection release plate is advanced between the connection portion of the connection clip and the web of the side edge support The control rod is positioned directly below the lower flange of the edge holder, the pivoting center shaft abuts the engagement lip of the edge, and the lower end of the operation rod is positioned obliquely below the edge holder. When the lower end portion of the connector is pivoted toward the edge support, the disconnection plate moves the connecting portion of the connection clip away from the edge receiver while the disconnection plate pivots in a direction away from the edge receiver. And the support shaft pivots in the direction away from the field edge The support shaft lifts the lower flange of the edge support upward to separate the edge support and the edge vertically, whereby the engagement of the first hook of the connecting clip with the upper flange of the edge support is released. Ru.

As another example of the present invention, the connection clip has a connection portion that abuts against the web of the edge support, a first hook located above the connection portion and engaged with the upper flange of the edge reception, and the connection portion And a pair of second hooks engaged with the engagement lip of the field edge, and in the connection release tool, the connection release plate is between the first hook of the connection clip and the web of the field edge receiver The support shaft is positioned directly below the lower flange of the edge holder, the pivoting center shaft abuts the engagement lip of the edge, and the lower end of the operating rod is positioned diagonally below the edge holder When the lower end of the operating rod is pivoted toward the edge support, the disengagement plate disengages the first hook of the connecting clip from the edge support while the connection release plate pivots in the direction away from the edge support. Move the support shaft away from the edge while moving in the direction While pivoting, the support shaft lifts the lower flange of the edge support upward to separate the edge support and the edge vertically, whereby the engagement of the first hook of the connecting clip with the upper flange of the edge support. The match is canceled.

As another example of the present invention, in the connection release tool, the lower end portion of the operation rod is the power point, the pivoting central axis is the fulcrum, and the connection release plate and the support shaft are the action points.

As another example of the present invention, the connection release tool is installed at the upper end of the operating rod and includes a vertically long installation plate in which the pivoting central axis, the connection release plate and the support shaft are connected, and the installation plate is upper It inclines uphill relative to the operating rod as it heads toward it.

  As another example of the present invention, in the connection release tool, it is possible to change the inclination angle of the installation plate with respect to the operation rod.

As another example of the present invention, the connection release plate is detachably attached to the installation plate and extends in the width direction from the installation plate, and in the connection release tool, the attachment position of the connection release plate to the installation plate is changed vertically It is possible to change the distance between the pivoting center axis and the connection release plate in the vertical direction.

  In another embodiment of the present invention, the support shaft extends from the mounting plate forwardly to support the lower flange of the edge support and extends upward from the tip end of the first support. And a second support for supporting the receiving web.

  As another example of the present invention, the support shaft is removably attached to the installation plate and extends forward from the installation plate, and the connection release tool can change the attachment position of the support shaft to the installation plate in the front-rear direction The extension dimension of the support shaft from the mounting plate to the front can be changed.

  As another example of the present invention, the connection release tool includes a guide rod positioned below the pivot center axis and extending in the width direction from the upper end of the operating rod, and between the pivot center axis and the guide rod There is a defined space for access to the field border.

  As another example of the present invention, the tip of the guide rod which is spaced apart from the operating rod in the width direction is inclined upward as it goes laterally from the operating rod in the width direction.

  As another example of the present invention, the operating rod can adjust its vertical length.

According to the connection release tool of the present invention, the connection release plate moves in the direction of separating the connection clip away from the edge holder while turning in the direction of separating the connection release plate from the edge reception centering on the turning center axis. While the support shaft pivots in a direction away from the edge of the field, the support shaft lifts the edge of the field edge up to separate the edge of the field edge and the edge of the connection clip from each other. It is possible to easily release the connection between the edge of the ceiling and the edge of the ceiling that can not be reached when the operator stands on the floor without using the stepladder. . The disengaging tool does not require the worker to repeatedly move the stepladder and get on and off the stepladder when releasing the connection between the field rim and the field rim, and the operator standing up on the floor (placed on the floor) can not It can be used to release the connection between the field edge and the field edge with a slight force, and it does not require labor for releasing the connection between the field edge and the field edge, and requires no effort and time. It is possible to release the connection between the field rim and the field rim efficiently in a short time. In the connection release tool, the field edge holder and the connection clip are disengaged by disengaging the field edge receiver and the field edge slightly in the vertical direction, and the connection between the field edge receiver and the field edge is released. Therefore, the connection between the field rim and the field rim can be released without deforming the field rim or the field rim, and the disconnected field rim and the field rim retain their original shape, and the connection is released. It is possible to make it possible to reuse field borders and field borders. The disconnecting tool keeps the original shape of the unconnected field support and the field edge, so that they are not bulky when discarding the field support and the field edge, and they can be packaged easily. It is possible to make it possible to dispose of the borderline and the borderline without the need for labor and time.

The disengaging plate is advanced between the connection part of the connecting clip and the web of the edge support, the support shaft is positioned directly below the lower flange of the edge support, and the pivoting center shaft abuts the engagement lip of the edge In addition, when the lower end portion of the operation rod is positioned obliquely below the field edge receiver when the lower end portion of the operation rod is turned toward the field edge receiver, the connection release plate is pivoted in the direction away from the edge edge receiver. And while moving the connecting portion of the connecting clip away from the edge support and pivoting the support shaft away from the end edge, the support shaft lifts the lower flange of the edge support upwards to receive the edge support. The disengaging tool which separates the edge of the connecting clip and the edge in the vertical direction, thereby releasing the engagement of the first hook of the connecting clip with the upper flange of the edge receiving member, with the worker standing on the floor (position) The lower edge of the operating rod By pivoting towards the only, is moved in a direction uncoupling plate separating the connecting portion of the connection clip from the field edge receiving, field edge receiving and cortex lift the lower flange of the support shaft cortex edge receiving upward The operator stands up on the floor without using a stepladder since the edge is separated vertically and this disengages the upper flange of the edge holder and the first hook of the connecting clip. It is possible to easily release the connection between the ceiling edge and the edge of the ceiling that can not be reached in the state. The disengaging tool does not require the worker to repeatedly move the stepladder and get on and off the stepladder when releasing the connection between the field rim and the field rim, and the operator standing up on the floor (placed on the floor) can not It can be used to release the connection between the field edge and the field edge with a slight force, and it does not require labor for releasing the connection between the field edge and the field edge, and requires no effort and time. It is possible to release the connection between the field rim and the field rim efficiently in a short time.

The disengaging plate is advanced between the first hook of the connecting clip and the web of the border support, the support shaft is positioned directly below the lower flange of the border support, and the pivot center axis is in contact with the engagement lip of the border. When the lower end of the operating rod is positioned diagonally below the edge holder and the lower end of the operation rod is turned toward the edge receiver while in contact with the lower edge of the operation rod, the connection release plate is pivoted in the direction away from the edge receiver. While the connection release plate moves the first hook of the connection clip away from the edge support and the support shaft pivots away from the edge, the support shaft raises the lower flange of the edge support. The disengaging tool which lifts up and separates the rim and the rim in the vertical direction, thereby disengaging the first hook of the connecting clip on the upper flange of the rim, allows the worker to stand on the floor Operate with (Position) The lower end of the head by pivoting towards the receiving field edge, is moved in a direction uncoupling plate is spaced a first hook of the connection clip from the ceiling joist receiving the lower flange of the support shaft cortex edge receiving Work up without using a stepladder as it lifts up and separates the edge support and the edge in the vertical direction, thereby disengaging the upper flange of the edge support and the first hook of the connecting clip It is possible to easily release the connection between the edge of the ceiling and the edge of the ceiling that can not be reached when the person stands on the floor (position). The disengaging tool does not require the worker to repeatedly move the stepladder and get on and off the stepladder when releasing the connection between the field rim and the field rim, and the operator standing up on the floor (placed on the floor) can not It can be used to release the connection between the field edge and the field edge with a slight force, and it does not require labor for releasing the connection between the field edge and the field edge, and requires no effort and time. It is possible to release the connection between the field rim and the field rim efficiently in a short time.

The lower end portion of the operating rod is the power point, the pivoting center axis is the fulcrum, and the connection release tool with the connection release plate and the support shaft acting point is the operating rod while holding the lower end portion of the operating rod as the power point. By pivoting the lower end portion toward the edge of the edge, a large force acts on the connection release plate serving as the point of action and the support shaft, and the connection release plate and the support shaft are pivoted about the pivot center axis. The disengaging plate moves the first hook of the connecting clip away from the edge support and the support shaft causes the edge support and the edge to move up and down, so a slight force is applied to the lower end of the operating rod. The first hook of the connecting clip and the field edge receiver separate from each other and the field edge receiver and the field edge move up and down in the vertical direction, and the field edge receiver is slightly moved using the principle of forceps. Of the upper flange and the first hook of the connecting clip It can be released if it is possible to release the connection between the field edge receiving and ceiling joist with a slight force.

The release tool is installed at the upper end of the operating rod and includes a vertically extending installation plate in which the pivoting central axis, the connection release plate and the support shaft are connected, and the installation plate is raised with respect to the operating rod Depending on the height of the connection point between the edge support and the field edge, the position of the worker on the floor, etc., the sloped connection release tool may be used to connect the connection release plate to the connection of the connection clip and the web for the edge support. In some cases, it may be difficult to enter the space between them, or to enter the disconnecting plate between the first hook of the connecting clip and the web of the edge support, or to position the support shaft directly below the lower flange of the edge support. Although the installation plate is inclined upward with respect to the operating rod, the pivoting central axis and the connection release plate are not located on the axis of the operating rod but above the operating rod, and the operator can Linking Dividing plate is easy to see. As a result, regardless of the height of the connection between the edge support and the edge, the position of the worker on the floor, etc., the disengaging plate can easily enter between the connection of the connection clip and the web of the edge support. Or the decoupling plate can be easily advanced between the first hook of the coupling clip and the web of the border reception.

The connection release tool that can change the inclination angle of the installation plate to the upslope of the operation rod can connect the connection release plate depending on the height of the connection point between the edge support and the field edge, the position on the floor of the worker, etc. The operation of entering between the connection of the clip and the web of the edge support, the operation of entering the disengaging plate between the first hook of the connecting clip and the web of the edge reception, the support shaft under the edge of the opening It may be difficult to locate the work directly below the flange, but change the inclination angle of the installation plate relative to the operation rod and change the position of the pivot center axis and the connection release plate above the operation rod. in, since pivot axis and uncoupling plate is more easily seen from the operator, regardless of the position or the like in the bed height and the operator of the connection point between the field edge receiving and ceiling joists, connected uncoupling plate clip Between the connecting portion and the field edge receiving web can be easily entered or can be easily enters between the first hook and ceiling joists receiving the web of the connection clip uncoupling plate, The support shaft can be easily positioned directly below the lower flange of the edge holder.

The connection release plate is detachably attached to the installation plate and extends in the width direction from the installation plate, and the attachment position of the connection release plate to the installation plate can be changed in the vertical direction, and the upper and lower sides of the pivot center axis and the connection release plate In the case of a disengaging tool capable of changing the dimension of separation in the direction, the edge of the web is standardized by the edge of the web, the edge of the web is large and the edge of the web is small. Although the magnitude of the dimensions of the web may not be able to enter between the first hook and ceiling joists receiving the web of the connection clip uncoupling plate, upward the mounting position of the decoupling plate to the mounting plate by increasing the vertical spacing dimension between the decoupling plate and pivot axis to change, c of the receiving first hook and ceiling joists of the connecting clip which engages the receiving large field edge dimension of the web Can be advanced uncoupling plate between the blanking, by reducing the vertical separation dimension between decoupling plate and pivot axis of the mounting position of the connection release plate change downwardly against mounting plate, A decoupling plate can be advanced between the first hook of the connecting clip engaging the smaller edge of the web and the web of the edge receiving. In addition, depending on the size of the web, the support shaft may not be located directly below the lower flange of the edge holder, but the mounting position of the connection release plate with respect to the installation plate is changed upward to By increasing the vertical separation distance from the connection release plate , the support shaft can be positioned directly below the lower flange of the field edge holder with a large web size, and the attachment position of the connection release plate to the installation plate is lowered. The support shaft can be positioned directly below the lower flange of the edge holder which has a small web size by changing it to reduce the vertical separation distance between the pivot center axis and the connection release plate .

  A support shaft extending forward from the mounting plate to support the lower flange of the edge support and a second support extending upward from the tip of the first support to support the web of the support edge; The disconnecting tool having the first support portion supports the lower flange of the edge support, the second support portion supports the web of the edge support, and pivots the lower end of the operating rod toward the edge support. The first and second support portions of the support shaft ensure that the edge support is lifted upward, so that the edge support and the edge can be vertically separated, and the upper flange of the edge support can be separated. It is possible to reliably release the engagement of the first hook of the connecting clip with the hook.

  The support shaft is removably attached to the mounting plate and extends forward from the mounting plate, and the mounting position of the support shaft relative to the mounting plate can be changed in the front-rear direction, and the dimensions of the support shaft extending forward from the mounting plate As for the disengaging tool that can be changed, the flange edge is standardized and the dimensions of the lower flange and the upper flange are determined, and there is a flange edge with a large flange size and a flange edge with a small flange size. Depending on the size of the flange, the support shaft may not support the lower flange of the edge support over its entire length, but the mounting position of the support shaft with respect to the installation plate is changed to the front to By increasing the forward extension dimension, the support shaft can support the lower flange of the edge support over its entire length, and the support shaft can support the edge support Flanges can be lifted reliably upward.

The connection release tool is located below the pivot center axis and includes a guide rod extending in the width direction from the upper end of the operating rod, and a space for allowing entry and exit of the edge is between the pivot center axis and the guide rod Since the connection release tool is positioned at the field edge receiver by bringing the field release into the space between the pivot center axis and the guide rod, the connection release tool is connected to the connection clip. Can easily enter between the section and the web of the border, or the decoupling plate can easily enter between the first hook of the connecting clip and the web of the border and supporting The shaft can be easily positioned directly below the lower flange of the edge holder.

In the connection release tool in which the tip end of the guide rod which is separated from the operation rod in the width direction is inclined upward as the width direction of the operation rod is extended, the tip of the guide rod is inclined in the upward inclination. The tip of the guide rod serves as a mark when the field edge is made to enter the space, and the field edge can be easily made to enter the space. Since the connection release plate is positioned at the outer edge receiver by bringing the outer edge into the space between the pivot center axis and the guide rod, the release member is the connection release portion of the connection clip and the outer edge receiver. Or the decoupling plate can easily enter between the first hook of the connecting clip and the web of the border reception, and the support shaft can It can be easily positioned just below the lower flange.

The connection release tool whose operating rod can adjust its vertical length is pivoted to the connection point between the ceiling edge and the edge of the high ceiling by lengthening the vertical length of the operating rod The central axis, the connection release plate , and the support axis can be positioned, and by shortening the vertical length dimension of the operating rod, the pivot central axis and connection can be made at the connection point of the low ceiling's edge support and field edge. The release plate and support shaft can be positioned, and regardless of the height of the ceiling, the connection between the edge of the ceiling and the edge of the ceiling that can not be reached easily when the operator stands on the floor can do.

The perspective view of the disconnection tool shown as an example. The enlarged perspective view of the upper end part of the operation rod of the connection release tool of FIG. The enlarged front view of the upper end part of the operation rod of the connection release tool of FIG. The enlarged side view of the upper end part of the operation rod of the connection release tool of FIG. The expansion perspective view of the connection place of the field edge holder and field edge which were connected by the connection clip shown as an example. Explanatory drawing which shows an example of the procedure of connection release with the field edge holder and field edge by a connection release tool. Explanatory drawing which shows an example of the procedure of the connection cancellation | release which continues from FIG. The enlarged perspective view of the connection place of the field edge receptacle and field edge which were connected by the connection clip shown as another example. Explanatory drawing which shows another example of the procedure of the connection release with a field edge holder and a field edge by a connection release tool. Explanatory drawing which shows another example of the procedure of the connection cancellation | release which continues from FIG. The expansion perspective view of the upper end part of the operation rod of the connection release tool shown as another example. The enlarged front view of the upper end part of the operation rod of the connection release tool of FIG. The enlarged side view of the upper end part of the operation rod of the connection release tool of FIG. The enlarged front view of the upper end part of the operation rod of the connection release tool after changing the attachment position of the 1st support part of a connection release plate or a support plate with respect to a mounting plate. The enlarged side view of the upper end part of the operation rod of the connection release tool of FIG.

  The details of the connection release tool according to the present invention will be described below with reference to the accompanying drawings, such as FIG. 1, which is a perspective view of the connection release tool 10A shown as an example. 2 is an enlarged perspective view of the upper end 24 of the operation rod 11 of the connection release tool 10A of FIG. 1, and FIG. 3 is an enlarged front view of the upper end 24 of the operation rod 11 of the connection release tool 10A of FIG. FIG. FIG. 4 is an enlarged side view of the upper end portion 24 of the operation rod 11 of the connection release tool 10A of FIG.

  In FIGS. 1 and 2, the up and down direction is indicated by arrow A, the width direction is indicated by arrow B, and the front and back direction is indicated by arrow C. In FIG. 5, illustration of the ceiling board installed under the field edge 33 is omitted. Although FIG. 5 illustrates one field edge receiver 32 and one field edge 33, a plurality of field edge receivers 32 and a plurality of field edges 33 form a lattice on the actual ceiling 31. It is arrange | positioned so that it may form, and the field edge receptacle 32 and the field edge 33 are connected by the connection clip 43 in each intersection 42 (each connection location 42) of each field edge receptacle 32 and each field edge 33. As shown in FIG.

  The connection release tool 10A is suitably used for releasing the connection between the field rim 32 and the field rim 32 present at a position out of reach of the worker (person) when the ceiling 31 is repaired or disassembled. Ru. The connection release tool 10A releases the engagement of the first hook 45 of the connecting clip 43 connecting the field edge receiver 32 and the field edge 33 to the field edge receiver 32, and connects the field edge receiver 32 and the field edge 33. To release.

  The connection release tool 10A extends in the width direction side, a long operation rod 11 extending in the vertical direction, a turning center rod 12 (rotation center shaft 12) extending in the width direction side intersecting the vertical direction, and Engaging release plate 13 (engagement release shaft 13), a support plate 14 (support shaft 14) extending forward in the front-rear direction intersecting the vertical direction and the width direction, and a guide rod extending laterally in the width direction A guide plate 15 (guide shaft 15) and a vertically extending installation plate 16 in which the turning center rod 12, the engagement release plate 13, the support plate 14, and the guide rod 15 are connected are formed.

  The operation rod 11 is made of a light metal such as aluminum or alkali metal, or a metal such as stainless steel or steel, and is a long cylindrical rod 17 formed in a cylindrical shape and a long rod formed in a prismatic shape. The prismatic rod 18 is formed. The cylindrical rod 16 has a handle 19 that is manually gripped by a worker who performs a release operation in repair work or disassembly work, and an expansion and contraction unit 20 extending upward from the handle 19.

  The stretchable portion 20 is formed of a first cylindrical rod 21 (cylindrical rod or cylindrical pipe) located above and a second cylindrical rod 22 (cylindrical pipe) connected below the first cylindrical rod 21 and has a length in the vertical direction The height dimension can be adjusted. In addition, the expansion-contraction part 20 may be formed from three or more cylindrical rods, and the expansion-contraction part 20 may be formed from two or more prismatic rods. In addition, the operating rod 11 may not be expandable or contractible, and the operating rod 11 may be made of only the prismatic rod 18. In this case, the lower end portion of the rectangular rod 18 is the handle 19.

  The diameter of the first cylindrical rod 21 is smaller than that of the second cylindrical rod 22, and the first cylindrical rod 21 is slidably accommodated in the inside (inner side) of the second cylindrical rod 22. In the expandable portion 20, the first cylindrical rod 21 extends axially forward from the tip of the second cylindrical rod 22, and advances upward from the tip of the second cylindrical rod 22 in the vertical direction, or the second cylindrical rod 22 The head retracts downward from the tip of the head. In the stretchable portion 20, the first cylindrical rod 21 located at the upper side is slidably accommodated (retracted) in the second cylindrical rod 22 located at the lower side, thereby shortening the length dimension thereof. By exposing (extending) the first cylindrical rod 21 from the inside of the second cylindrical rod 22, its length can be increased.

  At the tip of the second cylindrical rod 22, a stopper 23 (locking mechanism) for fixing the first cylindrical rod 21 so as not to be expandable (slidable) is attached. The stopper 23 used is a known one that is used for a support bar or a telescopic bar. In the locked state using the stopper 23 (the state in which the stopper 23 is rotated clockwise), the first cylindrical rod 21 is fixed to the second cylindrical rod 22 via the stopper 23, and the first cylindrical rod 21 is The cylindrical rod 22 can not be expanded or contracted (slidable). In the unlocked state of the stopper 23 (the state where the stopper 23 is rotated in the counterclockwise direction from the locked state), the first cylindrical rod 21 can freely slide in the vertical direction with respect to the second cylindrical rod 22. . The prismatic rod 18 extends upward from the tip end of the first cylindrical rod 21 (the extendable portion 20). The lower end of the prismatic rod 18 is fixed by welding to the tip of the first cylindrical rod 21 (the extendable portion 20).

  The turning center rod 12 (rotation center axis 12) is made of a light metal such as aluminum or alkali metal or a metal such as stainless steel or steel and is formed into a cylindrical shape. The pivoting center rod 12 extends in the width direction from the upper end 24 of the prismatic rod 18 (the upper end 24 of the operating rod 11). The pivoting center rod 12 has its proximal end welded fixed (connected) above the mounting plate 16. The pivoting center rod 12 has a diameter in the range of 7 to 15 mm. The pivoting center shaft 12 may be formed in a plate shape.

  The engagement release plate 13 (engagement release shaft 13) is formed in a plate shape from a light metal such as aluminum or alkali metal or a metal such as stainless steel or steel. The engagement release plate 13 is spaced apart from the pivoting center rod 12 by a predetermined distance and from the pivoting center rod 12 by a predetermined distance from the pivoting center rod 12 to the width direction from the upper end 24 of the prismatic rod 18 (the upper end 24 of the operation rod 11). It extends to The disengaging plate 13 is connected (connected) to the upper side of the mounting plate 16 and integrally formed (connected) with the mounting plate 16. The extension dimension of the disengaging plate 13 in the width direction is shorter than that of the pivoting center shaft 12, but may be substantially the same as that of the pivoting center shaft 12.

  The support plate 14 (support shaft 14) is made of a light metal such as aluminum or alkali metal, or a metal such as stainless steel or steel, and is formed into a plate shape. The support plate 14 is positioned below the disengaging plate 13 and extends forward from the upper end 24 of the prismatic rod 18 (the upper end 24 of the operation rod 11). The support plate 14 supports the edge support 32. The support plate 14 is continuous with the center of the mounting plate 16 and integrally formed (connected) with the mounting plate 16. The support plate 14 has a first support 25 extending forward from the mounting plate 16 and a second support 26 extending upward from the tip of the first support 25. The first support portion 25 supports a lower flange 36 described later of the field edge receiver 32, and the second support portion 26 supports a web 35 described later of the field edge receiver 32.

  The guide rod 15 (guide shaft 15) is made of a light metal such as aluminum or alkali metal, or a metal such as stainless steel or steel, and is formed into a cylindrical shape. The guide rod 15 is spaced downward from the pivoting center rod 12 by a predetermined distance, and extends in the width direction from the upper end 24 of the prismatic rod 18 (the upper end 24 of the operating rod 11). The guide rod 15 has a diameter in the range of 7 to 13 mm, and its proximal end is welded and fixed below the mounting plate 16 (connected). The guide rod 15 is slightly bent upward as the tip end 27 spaced apart from the prismatic rod 18 (operation rod 11) in the width direction goes laterally from the prism rod 18 (operation rod 11) in the width direction, and the tip 27 is It slopes uphill. A space 28 is defined between the pivoting center rod 12 and the guide rod 15 to allow the field edge 33 to enter and exit.

  The mounting plate 16 is made of a light metal such as aluminum or an alkali metal, or a metal such as stainless steel or steel, and is formed into a plate shape. The mounting plate 16 is formed of the fixing rod 29 by means of a fixing screw 29 inserted (or screwed) into an insertion hole (or screw hole) formed in the plate 16 and the prism rod 18 and a nut 30 screwed to the fixing screw 29. It is being fixed to the upper end part 24 (upper end part 24 of the operation rod 11). The mounting plate 16 is inclined upward with respect to the axis of the prismatic rod 18 (operation rod 11) as it goes upward in the vertical direction. As a result, the pivoting center shaft 12 and the engagement release shaft 13 are located not on the axis of the prismatic rod 18 (operating rod 11) but above the prismatic rod 18 (operating rod 11).

  FIG. 5 is an enlarged perspective view of the connection portion 42 of the field edge receiver 32 and the field edge 33 connected by the connection clip 43 shown as an example, and FIG. 6 is a region edge 32 and field edge by the connection release tool 10A. It is explanatory drawing which shows an example of the procedure of connection cancellation | release with 33. FIG. FIG. 7 is an explanatory view showing an example of the procedure of disconnection following FIG.

  In the ceiling 31, the plurality of field edges 32 extending in the width direction are arranged substantially at equal intervals in the front-rear direction, and the plurality of fields 33 extending in the front-back direction are positioned just under the plurality of field edges 32. The lines are spaced substantially equally in the direction. The field rim 32 and the field rim 33 are assembled in a grid shape in which they cross at right angles. As shown in FIG. 5, the edge receiver 32 is a grooved steel that is formed in a U-shaped cross section, and the groove openings 34 are arranged to be horizontal.

  The edge support 32 has a vertically disposed web 35, and a horizontally disposed lower flange 36 and an upper flange 37, wherein the web 35 and the upper and lower flanges 36 and 37 are integrally connected. It is. According to the JIS standard, the dimension of the edge holder 32 is selected in accordance with various conditions such as the size and weight of the ceiling 31. The dimensions of the web 35 of the border 32 are 19 mm, 25 mm, 38 mm and 40 mm, and the dimensions of the flanges 36 and 37 of the border 32 are 10 mm, 12 mm and 20 mm.

  The edge 33 is a grooved steel with an engagement lip, and the groove opening 38 is arranged to face upward. The edge 33 has a bottom wall 39 disposed horizontally, a pair of side walls 40 extending upward from both side edges of the bottom wall 39 and disposed vertically, and a pair located at the upper end of the side wall 40. And the bottom wall 39, the side wall 40, and the engagement lip 41 are integrally connected. The engagement lip 41 is bent inward in the horizontal direction from the upper end of the side wall portion 40 and then bent downward in the vertical direction toward the bottom wall portion 39 so as to be shaped like a key. The dimensions of the edge 33 are selected in accordance with JIS standards and in accordance with various conditions such as the size and weight of the ceiling 31. The dimensions of the bottom wall 39 of the edge 33 are 25 mm and 50 mm, and the dimensions of the side wall 40 of the edge 33 are 19 mm and 25 mm.

  The field rim 32 and the field rim 33 are connected using the connecting clip 43 at their intersection points 42 (connection points 42). The connecting clip 43 is standardized in accordance with the JIS standard and its size (width dimension and vertical dimension) is unified, and it is widely used. The connecting clip 43 has a connecting portion 44 facing (parallel to) the web 35 of the edge support 32 and a pair of first hooks 45 located above the connecting portion 44 and engaged with the upper flange 37 of the edge support 32. And a pair of second hooks 46 located below the connection portion 44 and engaged with the engagement lip 41 of the rim 33. The width dimensions of the connection portion 44 of the connection clip 43 are 25 mm and 50 mm.

  With the field rim 32 and the field rim 33, the field rim 33 is disposed immediately below the field rim 32 with the field rim 33 intersecting the field rim 32 at a right angle, and the lower flange of the field rim 32 It is connected by the connection clip 43 arrange | positioned in the cross | intersection location 42 (connection location 42) which the engagement lip 41 of 36 and the field edge 33 contact | abuts. In the connection clip 43, the connection portion 44 is located on the groove opening 34 side of the edge receiver 32, and the pair of first hooks 45 are bent so that the first hook 45 engages with the upper flange 37 of the edge receiver 32. A pair of second hooks 46 are engaged with the engagement lip 41 of the edge. A ceiling plate (not shown) is installed under the field edge 33 connected to the field edge receiver 32 by the connecting clip 43.

  The procedure for releasing the connection between the field edge holder 32 and the field edge 33 shown in FIG. 5 using the connection release tool 10A is as follows. A worker who performs repair work or dismantling work of the ceiling 31 unlocks the stopper 23 attached to the tip of the second cylindrical rod 22, and accommodates the first cylindrical rod 21 inside the second cylindrical rod 22. Alternatively, after exposing the first cylindrical rod 21 from the second cylindrical rod 22 and adjusting the length of the telescopic portion 20 of the cylindrical rod 17 in accordance with the height of the ceiling 31, the stopper 23 is locked. The length dimension of the expansion-contraction part 20 of the cylindrical rod 17 is fixed.

  Next, the worker removes the ceiling plate from the ceiling 31 and exposes the edge support 32 and the edge 33, and holds the handle 19 of the cylindrical rod 17 by hand while standing upright on the floor. Of the front end 24 (the front end 24 of the operation rod 11) toward the ceiling 31, and from the side of the groove opening 34 of the field edge receiver 32, the tip 24 is connected to the field edge 32 and the field edge 33 Move to intersection point 42). After moving the tip 24 to the connection point 42, the edge 33 is made to enter the space 28 between the turning center rod 12 and the guide rod 15, and the connection release plate 13 is connected to the connection portion 44 of the connection clip 43 and the edge The support plate 14 is positioned directly below the lower flange 36 of the edge receptacle 32 while advancing between the web 32 of the receptacle 32 (groove opening 34).

  Since the telescopic portion 20 (operation rod 11) of the cylindrical rod 17 can adjust the length dimension in the vertical direction, the vertical direction of the telescopic portion 20 (operation rod 11) of the cylindrical rod 17 regardless of the height of the ceiling 31 By lengthening the length dimension, the tip 24 (the tip 24 of the operation rod 11) of the prismatic rod 18 can be positioned at the connection point 42 between the field edge 32 and the field edge 33 of the high ceiling 31. The front end of the rectangular rod 18 at the connection point 42 between the field edge 32 and the field edge 33 of the low ceiling 31 by shortening the vertical dimension of the expansion and contraction portion 20 (operation rod 11) of the cylindrical rod 17 24 (the tip 24 of the operating rod 11) can be positioned.

  The tip end 27 of the guide rod 15 is inclined upward as it goes laterally from the prismatic rod 18 (the operation rod 11), and therefore, the tip 27 becomes a mark when the field edge 33 enters the space 28. The field edge 33 can easily enter the space 28 and the tip 24 (the tip 24 of the operating rod 11) of the prismatic rod 18 can be easily positioned at the connection point 42 between the field edge 32 and the field edge 33. When the field edge 33 is made to enter the space 28, the tip portion 27 can make the field edge 33 difficult to separate from the space 28.

  When the connection release rod 13 is made to enter between the connection portion 44 of the connection clip 43 and the web 35 of the edge support 32 and the support plate 14 is positioned directly below the lower flange 36 of the edge support 32, as shown in FIG. As shown, the pivoting center rod 12 abuts on the engagement lip 41 of the rim 33, and the operating rod 11 is inclined rearward of the rim 33, and the handle 19 of the cylindrical rod 17 (lower end of the operating rod 11) Section) is located diagonally below the border 32 and behind the border 32. The handle 19 (the lower end portion of the operation rod 11) of the cylindrical rod 17 is a power point, the turning center rod 12 is a fulcrum, and the connection release plate 13 and the support plate 14 are an action point.

  As shown in FIG. 7, when the handle 19 (lower end of the operation rod 11) of the cylindrical rod 17 is turned toward the edge support 32 (the direction indicated by the arrow L1 in FIG. 6) in the state of FIG. With the center rod 12 as a center (fulcrum), the connection release plate 13 pivots the connecting portion 44 of the connection clip 43 from the edge receiver 32 while pivoting in a direction (direction away from) the connection release plate 13 away from the edge receiver 32. While the support plate 14 is pivoted in a direction (away direction) away from the field edge 33 while moving (separating) in a direction (away direction) away from the field edge 33, the support plate 14 moves the lower flange 36 of the edge receiver 32 upward. It lifts and forcedly separates the field rim 32 and the field rim 33 in the vertical direction (pulls apart). By slightly separating the edge 32 and the edge 33 in the vertical direction, the first hook 45 of the connecting clip 43 is folded back and the first hook 45 is disengaged from the upper flange 37 of the edge 32 and the edge is removed. The engagement between the upper flange 37 of the receiver 32 and the first hook 45 of the connecting clip 43 is released, and the connection between the field edge receiver 32 and the field edge 33 is released.

  The lower flange 36 of the edge support 32 is supported by the first support 25 of the support plate 14, and the web 35 of the edge support 32 is supported by the second support 26 of the support plate 14. When the (lower end portion of the operation rod 11) is turned toward the edge support 32, the edge support 32 is reliably lifted upward by the first and second support portions 25 and 26 of the support plate 14, The edge receptacle 32 and the edge 33 can be vertically separated, and the engagement of the first hook 45 of the connecting clip 43 with the upper flange 37 of the edge receptacle 32 can be reliably released.

  In addition, although the field edge holder 32 and the field edge 33 are actually connected by the several connection clip 43, by repeating the procedure demonstrated based on FIG. The engagement between the upper flange 37 of the rim support 32 and the first hooks 45 of all the connection clips 43 can be released, and the connection between the rim support 32 and the rim 33 at all the connection points 42 is released. Can.

  The connection release tool 10A rotates the handle 19 (lower end portion of the operation rod 11) of the cylindrical rod 17 toward the edge support 32 in a state where the worker stands on the floor (position), thereby the connection release plate 13 Moves the connecting portion 44 of the connecting clip 43 away from the edge support 32, and the support plate 14 lifts the lower flange 36 of the edge support 32 upward to raise and lower the edge support 32 and the edge 33. The worker is spaced apart in the direction, whereby the engagement between the upper flange 37 of the edge holder 32 and the first hook 45 of the connecting clip 43 is released, so that the worker can not reach the floor standing up (position) The connection between the border 32 of the ceiling 31 and the border 33 can be easily released.

  FIG. 8 is an enlarged perspective view of the connecting point 42 between the edge support 32 and the field edge 33 connected by the connecting clip 43 as another example, and FIG. It is explanatory drawing which shows another example of the procedure of a connection cancellation | release with the field edge 33, FIG. 10: is explanatory drawing which shows another example of the procedure of a connection cancellation | release continuing from FIG.

  With the field rim 32 and the field rim 33, the field rim 33 is disposed immediately below the field rim 32 with the field rim 33 intersecting the field rim 32 at a right angle, and the lower flange of the field rim 32 It is connected by the connection clip 43 arrange | positioned in the cross | intersection location 42 (connection location 42) which the engagement lip 41 of 36 and the field edge 33 contact | abuts. In the connection clip 43, the connection portion 44 is positioned on the side of the web 35 of the edge support 32, the connection portion 44 abuts against the web 35, the pair of first hooks 45 is bent, and the first hook 45 receives the edge In engagement with the upper flange 37 of 32, a pair of second hooks 46 is engaged with the engagement lip 41 of the field edge.

  The procedure for releasing the connection between the field edge holder 32 and the field edge 33 shown in FIG. 8 using the connection release tool 10A is as follows. The operator holds the handle 19 of the cylindrical rod 17 by hand while standing up on the floor, lifts the end 24 of the prismatic rod 18 (the end 24 of the operation rod 11) toward the ceiling 31, and The tip 24 is moved from the side of the groove opening 34 to the connecting point 42 (crossing point 42) between the edge support 32 and the field edge 33. After moving the tip 24 to the connection point 42, the edge 33 is made to enter the space 28 between the turning center rod 12 and the guide rod 15, and the connection release plate 13 is used as the first hook 45 of the connection clip 43 (upper The support plate 14 is made to enter between the extension portion 45a) of the first hook 45 extending downward from the flange 37 and the web 35 of the rim support 32 (groove opening 34) Position it directly below.

  When the connection release rod 13 is advanced between the first hook 45 of the connection clip 43 and the web 35 of the edge support 32, the support plate 14 is positioned directly below the lower flange 36 of the edge support 32, as shown in FIG. As shown in FIG. 2, the pivoting center rod 12 abuts on the engagement lip 41 of the rim 33, and the operating rod 11 is inclined rearward of the rim 33, and the handle 19 of the cylindrical rod 17 (the operating rod 11 The lower end) is positioned obliquely below the edge holder 32 and behind the edge holder 32. The handle 19 (the lower end portion of the operation rod 11) of the cylindrical rod 17 is a power point, the turning center rod 12 is a fulcrum, and the connection release plate 13 and the support plate 14 are an action point.

  As shown in FIG. 10, when the handle 19 (lower end portion of the operation rod 11) of the cylindrical rod 17 is turned toward the field edge receiver 32 (direction indicated by arrow L1 in FIG. 9) in the state of FIG. With the center rod 12 as the center (fulcrum), the connection release plate 13 is pivoted in a direction (direction away from) the connection release plate 13 away from the edge receiver 32, and the connection release plate 13 is the first hook 45 (from the upper flange 37). The extending portion 45 a) of the first hook 45 extending downward is moved (separated) in a direction (away direction) away from the rim support 32, and in a direction (away direction) for the support plate 14 away from the rim 33. While pivoting, the support plate 14 lifts the lower flange 36 of the rim 32 upward to forcibly separate the rim 32 and the rim 33 in the vertical direction (separate). The first hook 45 (the extending portion 45 a) of the connecting clip 43 is folded back due to a slight separation of the edge 32 and the edge 33 in the vertical direction, and the first hook 45 is the upper flange of the edge 32. Then, the engagement between the upper flange 37 of the field edge holder 32 and the first hook 45 of the connecting clip 43 is released, and the connection between the field edge holder 32 and the field edge 33 is released.

  The connection release tool 10A rotates the handle 19 (lower end portion of the operation rod 11) of the cylindrical rod 17 toward the edge support 32 in a state where the worker stands on the floor (position), thereby the connection release plate 13 Moves the first hook 45 (the extending portion 45a) of the connecting clip 43 in a direction to move away from the edge support 32, and the support plate 14 lifts the lower flange 36 of the edge support 32 upward to And the field edge 33 are separated in the vertical direction, whereby the engagement between the upper flange 37 of the field edge holder 32 and the first hook 45 (extension portion 45 a) of the connecting clip 43 is released, In the state of standing up (position) on the floor, it is possible to easily release the connection between the edge 32 and the edge 33 of the ceiling 31 which can not be reached.

  In the connection release tool 10A, the operator does not have to repeatedly move the stepladder and get on and off the stepladder when releasing the connection between the field edge holder 32 and the field edge 33, and the operator located on the floor takes the principle of forceps. It is possible to release the engagement between the upper flange 37 of the edge holder 32 and the engagement of the first hook 45 of the connecting clip 43a with a slight force, and the edge holder 32 and the edge 33 The connection can be released, the connection between the field rim 32 and the field rim 33 does not require labor, and the connection between the field rim 32 and the field rim 33 can be shortened without requiring labor and time. It can be released efficiently in time.

  The connection release tool 10A releases the engagement between the upper flange 37 of the field edge receiver 32 and the first hook 45 of the connecting clip 43 by slightly separating the field edge receiver 32 and the field edge 33 in the vertical direction. Since the connection between the field rim 32 and the field rim 33 is released, the connection between the field rim 32 and the field rim 33 may be released without irregular deformation of the field rim 32 or the field rim 33. It is possible that the unconnected field rim 32 and the field rim 33 retain the original shape and enable reuse of the disconnected field rim 32 and the field rim 33. In the connection release tool 10A, since the unconnected field rim 32 and the field rim 33 retain the original shape, they are not bulky when discarding the field rim 32 and the field rim 33, and they are easily It can be packed, and disposal processing of the field rim 32 and the field rim 33 can be enabled without requiring time and effort.

  11 is an enlarged perspective view of the upper end 24 of the operating rod 11 of the connection release tool 10B shown as another example, and FIG. 12 is an enlarged front view of the upper end 24 of the operation rod 11 of the connection release tool 10B of FIG. FIG. FIG. 13 is an enlarged side view of the upper end portion 24 of the operation rod 11 of the connection release tool 10B of FIG. FIG. 14 is an enlarged front view of the upper end portion 24 of the operation rod 11 of the connection release tool 10B after changing the attachment position of the engagement release plate 13 and the first support 25 of the support plate 14 to the installation plate 16; FIG. 15 is an enlarged side view of the upper end portion 24 of the operation rod 11 of the connection release tool 10B of FIG. In FIG. 11, the up and down direction is indicated by arrow A, the width direction is indicated by arrow B, and the front and back direction is indicated by arrow C. In FIGS. 12 to 15, the cylindrical rod 17 is not shown.

  Similar to the connection release tool 10A, the connection release tool 10B includes the field edge receiver 32 and the field edge 33 which are out of reach of the worker (person) when the ceiling 31 is repaired or disassembled. It is suitably used for releasing the connection. The connection release tool 10B releases the engagement of the connecting clip 43 connecting the field edge receiver 32 and the field edge 33 with the field edge receiver 32, and releases the connection between the field edge receiver 32 and the field edge 33.

  The connection release tool 10B includes a long operation rod 11 extending in the vertical direction, a pivoting center rod 12 (rotation center shaft 12) extending in the width direction, and an engagement release plate extending in the width direction. 13 (engagement release shaft 13), a support plate 14 (support shaft 14) extending forward in the front-rear direction, a guide rod 15 (guide shaft 15) extending laterally in the width direction, a pivoting center rod 12, A disengaging plate 13, a support plate 14, and a vertically extending installation plate 16 in which a guide rod 15 is connected are formed. Since the operation rod 11, the turning center rod 12, and the guide rod 15 are the same as those of the connection release tool 10A of FIG. 1, the same reference numerals as those of FIG. 1 and FIG. The description of the operation rod 11, the turning center rod 12, and the guide rod 15 of the connection release tool 10B is omitted.

  The engagement release plate 13 (engagement release shaft 13) is spaced apart from the pivoting center rod 12 by a predetermined distance and from the pivoting center rod 12 by a predetermined distance, and the upper end 24 of the prismatic rod 18 (the operation rod 11). It extends in the width direction from the upper end portion 24). At the base end of the disengaging plate 13, a fixing plate 47 extending orthogonal to the disengaging plate 13 is connected. The fixing plate 47 is detachably fixed to the upper side of the mounting plate 16. The fixed plate 47 is formed with a length adjustment opening 48 (length adjustment slit) which is long in the vertical direction. The disengaging plate 13 and the fixing plate 47 are separate from the mounting plate 16 and integrally formed, and are made of a light metal such as aluminum or alkali metal or a metal such as stainless steel or steel. It has been molded.

  The support plate 14 (support shaft 14) is located below the disengaging plate 13 and extends forward from the upper end 24 (upper end 24 of the operation rod 11) of the prismatic rod 18. The support plate 14 is a separate member from the installation plate 16 and is formed into a plate shape from a light metal such as aluminum or alkali metal or a metal such as stainless steel or steel. The support plate 14 has a first support 25 extending forward from the mounting plate 16 and a second support 26 extending upward from the tip of the first support 25. The support plate 14 is detachably fixed to the central side of the mounting plate 16. The first support portion 25 of the support plate 14 is formed with a length adjustment opening 49 (length adjustment slit) which is long in the vertical direction.

  The mounting plate 16 is made of a light metal such as aluminum or an alkali metal, or a metal such as stainless steel or steel, and is formed into a plate shape. The installation plate 16 has an upper end portion 24 of the prismatic rod 18 (an upper end portion of the operation rod 11) by means of a shaft screw 29 inserted into an insertion hole formed in the plate 16 and the prismatic rod 18 and a nut 30 screwed to the shaft screw 29 24) is pivotably connected.

  A guide groove 50 is formed in the upper side portion of the installation plate 16 to slide the fixing plate 47 connected to the disengaging plate 13 in the vertical direction. A guide groove 51 for sliding the first support portion 25 of the support plate 14 in the front-rear direction is formed in the central side portion of the installation plate 16. An angle adjustment opening 52 (angle adjustment slit) extending in an oblique direction of the plate is formed in the lower central portion of the installation plate 16. In the angle adjustment opening 52, a screw hole drilled in the upper end 24 (upper end 24 of the operation rod 11) of the prismatic rod 18 is exposed.

  The mounting plate 16 is pivoted about the axial screw 29, the pivoting of the mounting plate 16 is stopped at a predetermined position, and the mounting plate 16 is inclined at an upward slope at a predetermined angle with respect to the axis of the prismatic rod 18 (operation rod 11). Then, the fixing screw 53 is screwed into a screw hole exposed to the angle adjustment opening 52 to fix the mounting plate 16 to the prismatic rod 18 (operation rod 11). The mounting plate 16 is pivoted to change the position of the screw hole with respect to the angle adjustment opening 52, and the fixing screw 53 is screwed into the screw hole exposed at a predetermined position of the angle adjustment opening 52. It is possible to change the inclination angle of the mounting plate 16 to the upward inclination with respect to the axis of.

  When the installation plate 16 inclines upward with respect to the axis of the prismatic rod 18 (the operating rod 11), the pivoting center rod 12 and the disengaging plate 13 are not the axis of the prismatic rod 18 (the operating rod 11). It is located above the rod 18 (operation rod 11). When the height of the connection point 42 between the edge support 32 and the field edge 33 is high, the inclination angle of the upslope of the installation plate 16 with respect to the axis of the prismatic rod 18 (operation rod 11) is increased. The pivoting center rod 12 and the disengaging plate 13 can be easily seen by the worker positioned below, and the disengaging plate 13 can be positioned between the connection portion 44 of the connecting clip 43 and the web 35 of the edge support 32 or the connecting clip 43 It can be easily made to enter between the extension portion 45 a of the one hook 45 and the web 35 of the border support 32.

  The fixed plate 47 is disposed in the guide groove 50 formed in the upper side portion of the installation plate 16, and the fixed plate 47 is vertically slid in the guide groove 50, and the slide of the fixed plate 47 is made at a predetermined position of the guide groove 50. After stopping, the fixing screw 54 is screwed into the screw hole exposed to the length adjustment opening 48 to fix the fixing plate 47 to the mounting plate 16. The fixing plate 47 is slid in the vertical direction in the guide groove 50 to change the position of the screw hole exposed in the length adjustment opening 48, and the fixing screw 54 is screwed into the screw hole exposed in a predetermined position of the length adjustment opening 48. By doing this, the mounting position of the disengaging plate 13 with respect to the mounting plate 16 can be changed in the vertical direction, and the distance between the pivoting center rod 12 and the disengaging plate 13 in the vertical direction can be changed.

  In the connection release tool 10B shown in FIGS. 11 to 13, the engagement release plate 13 is slid downward with respect to the installation plate 16, and the attachment position of the engagement release plate 13 with respect to the installation plate 16 is changed below the plate 16. The vertical separation distance between the turning center rod 12 and the engagement release plate 13 is reduced. The release tool 10B shown in FIGS. 11 to 13 is used to release the connection between the edge 32 and the edge 33 of the web 35 having dimensions of 19 mm and 25 mm.

  14 to 16 slide the disengaging plate 13 upward with respect to the mounting plate 16 and change the mounting position of the disengaging plate 13 to the mounting plate 16 above the plate 16 The distance between the pivoting center rod 12 and the engagement release plate 13 in the vertical direction is increased. The release tool 10B shown in FIGS. 14 to 16 is used to release the connection between the edge 32 and the edge 33 of the web 35 having dimensions of 38 mm and 40 mm.

  The first support portion 25 of the support plate 14 is disposed in the guide groove 51 formed in the central side portion of the installation plate 16, and the first support portion 25 is slid in the front and back direction in the guide groove 51. After stopping the slide of the first support portion 25 at the position, fix the first support portion 25 of the support plate 14 to the installation plate 16 by screwing the fixing screw 55 into the screw hole exposed to the length adjustment opening 49 . The position of the screw hole exposed in the length adjustment opening 49 is changed by sliding the first support portion 25 in the longitudinal direction in the guide groove 51, and the fixing screw 55 is fixed in the screw hole exposed in the predetermined position of the length adjustment opening 49. By screwing, the mounting position of the first support 25 of the support plate 14 with respect to the installation plate 16 can be changed in the front-rear direction, and the support plate 14 extends forward from the installation plate 16 of the first support 25. The dimensions can be changed.

  In the connection release tool 10B shown in FIGS. 11 to 13, the first support portion 25 of the support plate 14 is slid backward with respect to the installation plate 16, and the attachment position of the first support portion 25 with respect to the installation plate 16 is the plate 16. It changes to the back and makes the extension dimension from the installation plate 16 of the 1st support part 25 ahead small. The release tool 10B shown in FIGS. 11 to 13 is used to release the connection between the field edge 32 and the field edge 33 whose lower flange 36 has a size of 10 mm or 12 mm.

  14 to 16 slide the first support portion 25 of the support plate 14 forward with respect to the installation plate 16, and the attachment position of the first support portion 25 with respect to the installation plate 16 corresponds to that of the plate 16. It is changed to the front, and the extension dimension from the installation plate 16 of the 1st support part 25 to the front is enlarged. The release tool 10B shown in FIGS. 14 to 16 is used to release the connection between the field edge 32 and the field edge 33 whose lower flange 36 has a size of 20 mm.

  The operator turns the installation plate 16 to change the position of the screw hole with respect to the angle adjustment opening 52, and screw the fixing screw 53 into the screw hole exposed at the predetermined position of the angle adjustment opening 52 The inclination angle of the mounting plate 16 with respect to the axis of the rod 11) is changed, and the fixing plate 47 is slid in the vertical direction in the guide groove 50 to change the position of the screw hole exposed in the length adjustment opening 48; The fixing screw 54 is screwed into a screw hole exposed to a predetermined position of the first position to change the vertical attachment position of the disengaging plate 13 with respect to the setting plate 16. The position of the screw hole exposed to the length adjustment opening 49 is changed by sliding in the direction, and the fixing screw 55 is screwed into the screw hole exposed to the predetermined position of the length adjustment opening 49 to thereby fix the first support portion 25. Changing the longitudinal direction of the mounting position with respect to mounting plate 16.

  The operator sets the inclination angle of the installation plate 16, the attachment position of the engagement release plate 13 to the installation plate 16, and the attachment position of the first support 25 to the installation plate 16, and then uses the connection release tool 10B. The connection between the rim 32 and the rim 33 is released. The procedure for releasing the connection between the field edge holder 32 and the field edge 33 using the connection release tool 10B is the same as those in FIGS. 6, 7 and 9, 10, so The description is abbreviate | omitted by using.

  In addition to the effect which the connection release tool 10A of FIG. 1 has, the connection release tool 10B shown to FIGS. 11-16 has the following effects. Depending on the height of the connection point 42 between the edge 32 and the edge 33 and the position of the worker on the floor, the connection release plate 13 enters between the connection portion 44 of the connection clip 43 and the web 35 of the edge 32 Work of moving the connection release plate 13 into the space between the first hook 45 of the connection clip 43 and the web 35 of the edge support 32, operation of positioning the support plate 14 directly below the lower flange 36 of the edge support 32. However, the connection release tool 10B can change the inclination angle of the installation plate 16 with respect to the axis of the prismatic rod 18 (operation rod 11), and the prism rod 18 (operation rod 11) By changing the inclination angle of the mounting plate 16 with respect to the axis of the rod, and changing the upward position of the pivot rod 12 and the prismatic rod 18 (operation rod 11) of the disengaging plate 13, Since it is easier for the user to see the pivoting center rod 12 and the engagement release plate 13 by the operator, the connection release plate 13 can be used regardless of the height of the connection point 42 between the edge support 32 and the edge 33 and the position of the operator on the floor. The connection plate 44 of the connection clip 43 can be easily inserted between the connection portion 44 of the connection clip 43 and the web 35 of the edge support 32, or the release plate 13 can be used as the first hook 45 of the connection clip 43 and the web 35 of the connection edge holder 32 And the support plate 14 can be easily positioned directly below the lower flange 36 of the rim 32.

  The size of the web 35 is determined by standardizing the size of the webbing 32, and the size of the webbing 32 and the size of the web 35 are smaller, and the size of the web 35 is smaller. May not be able to enter the connection release plate 13 between the first hook 45 of the connection clip 43 and the web 35 of the edge support 32, but the connection release tool 10B is a mounting plate of the release plate 13. The mounting position with respect to 16 can be changed in the vertical direction, and the separation dimension in the vertical direction between the turning center rod 12 and the disengaging plate 13 can be changed, and the mounting position of the disengaging plate 13 with respect to the mounting plate 16 is upward By changing into the vertical separation dimension between the pivoting center rod 12 and the disengaging plate 13, the first flange of the connecting clip 43 engaged with the edge support 32 having a large dimension of the web 35 The connection release plate 13 can be advanced between the hook 45 and the web 35 of the edge support 32, and the attachment position of the release plate 13 with respect to the installation plate 16 is changed downward to engage with the turning center rod 12 Between the first hook 45 of the connecting clip 43 engaged with the small edge receptacle 32 of the web 35 and the web 35 of the lateral edge receptacle 32 by reducing the vertical separation distance from the release plate 13. The connection release plate 13 can be made to enter.

  In addition, depending on the size of the edge support 32 web 35, the support plate 14 may not be positioned directly below the lower flange 36 of the edge support 32. The lower flange 36 of the edge support 32 having a large dimension of the web 35 by changing the mounting position of the engagement release plate 13 upward and increasing the separation dimension between the pivoting center rod 12 and the engagement release plate 13 in the vertical direction. The support plate 14 can be positioned directly below the mounting plate 16. The mounting position of the disengaging plate 13 with respect to the mounting plate 16 is changed downward to reduce the vertical separation dimension between the pivoting center rod 12 and the disengaging plate 13 By doing this, the support plate 13 can be positioned directly below the lower flange 36 of the flange 32 whose web 35 has a small size.

  The edge supports 32 are standardized, and the dimensions of the lower flange 36 and the upper flange 37 are determined, and the edge supports 32 having large dimensions of the flanges 36 and 37 and the edge supports 32 having small dimensions of the flanges 36 and 37 are present Depending on the size of the flanges 36 and 37, the support plate 14 may not be able to support the lower flange 36 of the edge support 32 over the entire length thereof. By changing the mounting position relative to 16 in the front-rear direction, it is possible to change the dimension of the support plate 14 extending forward from the mounting plate 16 and change the mounting position of the support plate 14 relative to the mounting plate 16 forward to support By increasing the size of the extension of the plate 14 from the mounting plate 16 forward, the lower flange 36 of the field edge receiver 32 having a large size of the flanges 36 and 37 is supported. 14 can be supported over its entire length, the lower flange 36 of the field edge receiving 32 by the support plate 14 can be lifted reliably upward.

10A uncoupling tool 10B uncoupling tool 11 operation rod 12 turning center rod (turning center axis)
13 Release plate (release shaft)
14 Support plate (support shaft)
15 Guide rod (guide shaft)
DESCRIPTION OF SYMBOLS 16 installation plate 17 cylindrical rod 18 square pillar rod 19 handle part 20 expansion-contraction part 21 1st cylindrical rod 22 2nd cylindrical rod 23 stopper 24 upper end part 25 1st support part 26 2nd support part 27 tip part 28 space 29 fixing screw 30 nut Reference Signs List 31 ceiling 32 area edge support 33 area edge 34 groove opening 35 web 36 lower flange 37 upper flange 38 groove opening 39 bottom wall portion 40 side wall portion 41 engagement lip 42 connection point (crossing point)
43 connecting clip 44 connecting part 45 first hook 46 second hook 47 fixing plate 47
48 Length adjustment opening 49 Length adjustment opening 50 Guide groove 51 Guide groove 52 Angle adjustment opening 53 Fixing screw 54 Fixing screw 55 Fixing screw

Claims (12)

Engaging with a field edge receiver and a field edge overlapping immediately below the field edge receiver to release engagement of the connecting clip connecting the field edge receiver with the field edge to the field edge receiver; In the disconnection device for releasing the connection between
The connection release tool has a long operating rod extending in the vertical direction, a pivoting central axis extending in the width direction from the upper end of the operating rod, and a predetermined distance away from the pivoting central axis, and the pivoting center A connection release plate extending in the width direction from the upper end of the operation rod at a predetermined distance from the shaft and a position below the connection release plate and extending forward from the upper end of the operation rod; And a support shaft for supporting the field rim holder,
In the coupling release tool while the decoupling plate as turning around the pivot axis to pivot in a direction away from the field edge receiving, moving in the direction of the uncoupling plate is spaced apart the connection clip from ceiling joist receiving And the support shaft lifts the field edge receiver upward while the support shaft pivots in a direction away from the field edge, thereby vertically separating the field edge support and the field edge. A disengagement tool characterized in that engagement of the connection clip with the field edge receiver is released. The connecting clip has a connecting portion facing the web of the field edge receiver, a first hook located above the connecting portion and engaged with the upper flange of the field edge receiver, and located below the connecting portion And a pair of second hooks engaged with the engagement lip of the field edge, and in the connection release tool, the connection release plate is between the connection portion of the connection clip and the web of the field edge receiver And the pivoting center shaft abuts on the engagement lip of the field edge, and the lower end portion of the operation rod is When the lower end portion of the operation rod is pivoted toward the field edge receiver in a state of being positioned obliquely downward, the connection release plate is pivoted in the direction away from the field edge receiver while the connection release plate is connected Direction to separate the clip connection from the edge holder While moving and pivoting the support shaft in a direction away from the field edge, the support shaft lifts the lower flange of the field edge receiver upward to separate the field edge receiver and the field edge vertically. The connection release tool according to claim 1, wherein the first hook of the connection clip is disengaged from the upper flange of the cross section. A connecting portion in which the connecting clip abuts on a web of the edge support, a first hook located above the connecting portion and engaged with an upper flange of the edge receiving portion, and a position below the connection And a pair of second hooks engaged with the engagement lip of the field edge, and in the connection release tool, the connection release plate comprises the first hook of the connection clip and the web of the field edge receiver Into the gap, the support shaft is positioned directly below the lower flange of the flange, the pivoting center shaft contacts the engagement lip of the flange, and the lower end of the operating rod receives the flange When the lower end portion of the operation rod is pivoted toward the edge support while being positioned obliquely downward, the connection release plate is pivoted in a direction away from the edge support while the connection release plate is pivoted in the direction away from the edge support. Space the first hook of the connecting clip from the edge holder While the support shaft pivots in a direction away from the field edge, the support shaft lifts the lower flange of the field edge support upward to raise and lower the field edge support and the field edge. The disconnecting tool according to claim 1, wherein the connection hooks are spaced apart in the direction, whereby the first hooks of the connecting clips are disengaged from the upper flanges of the edge supports. The lower end portion of the operation rod in the connection release tool is a power point, the pivot center axis is a fulcrum, and the connection release plate and the support shaft are an action point. Disconnect tool. The connection release tool includes a vertically extending installation plate installed at an upper end portion of the operation rod and in which the pivoting central axis, the connection release plate, and the support shaft are connected, and the installation plate extends upward The disconnection device according to any one of claims 1 to 4, wherein the connection rod inclines upward with respect to the operating rod as it heads.   The connection release tool according to claim 5, wherein in the connection release tool, an inclination angle of the installation plate with respect to the operation rod can be changed. The connection release plate is detachably attached to the installation plate and extends in the width direction from the installation plate, and the connection release tool can change the mounting position of the connection release plate with respect to the installation plate in the vertical direction The connection release tool according to claim 5 or 6, wherein the separation dimension in the vertical direction between the pivot center axis and the connection release plate can be changed.   The support shaft extends from the installation plate forwardly to support the lower flange of the edge support, and extends upward from the tip end of the first support to support the web of the edge support. The connection release tool according to any one of claims 5 to 7, further comprising a second support portion for supporting.   The support shaft is detachably attached to the installation plate and extends forward from the installation plate, and the connection release tool can change the mounting position of the support shaft with respect to the installation plate in the longitudinal direction, The connection release tool according to any one of claims 5 to 8, wherein a dimension of extension of the support shaft from the installation plate to the front can be changed.   The connection release tool includes a guide rod positioned below the pivoting central axis and extending in the width direction from the upper end of the operating rod, and between the pivoting central axis and the guide rod The connection release tool according to any one of claims 1 to 9, wherein a space is defined to allow access to the field edge. The connection release tool according to claim 10 , wherein a tip of the guide rod spaced apart from the operating rod in the width direction is inclined in an upward slope as it extends laterally from the operating rod. The operating rod is adjustable in its vertical length dimension.
1 The disconnection tool described in any one.

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