JP2006241715A - Connection device, scaffold plate for connection having the connection device, and handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection device having excellent operability and capable of securely connecting two members to each other, a scaffold plate for connection having the connection device, and a handrail. <P>SOLUTION: This connection device comprises a first engagement part fitted to a connected member and engaged with a plate-like mating connection member from the underside and a second engagement part engaged from the upper part. The first engagement part is formed at the lower end of a lock plate rotatably fitted to a pivot shaft in a roughly horizontal state among the upper and lower ends thereof holding the pivot shaft. The connection device is fitted to the scaffold plate for connection or the handrail detachably connectable to a scaffold having a top plate supported by a plurality of leg bodies. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connection tool, a connection scaffolding plate including the connection tool, and a handrail.

  Conventionally, in order to improve workability, a plurality of scaffolds, stepladders, and the like that can be used independently have been prepared, and a scaffolding plate for connection between them has been spread to expand the scaffold area. In that case, since it is unstable just to hang over the connecting scaffolding plate, a connecting tool or a connecting device for connecting the connecting scaffolding plate and a scaffold, a stepladder or the like is used.

  For example, the connector described in Patent Document 1 has an engagement piece that can be engaged with the top plate of the scaffold from above, and a floating prevention that protrudes toward the lock position of the lower portion of the top plate below the engagement piece. With a piece.

Further, the connector described in Patent Document 2 is for connecting the stepladders at right angles to each other, and is arranged so as to sandwich the frame vertically, and an upper plate that is extended back and forth in the width direction of the frame; A lower plate extended to one side, a connecting pin that is inserted into a through hole provided in one stepladder top plate protrudes from one side extension of the upper plate, and the other step top plate is connected to the upper plate. And the lower plate, and the upper plate, the stepladder plate, and the lower plate are axially attached by a connecting pin.
JP 2003-138744 A JP 2001-73548 A

  The above-described conventional coupler is desired not only to be firmly coupled but also to be easily handled.

  However, for example, when the connecting tool disclosed in Patent Document 1 is used to hang a connecting scaffolding plate, it must be moved from the locking position by operating the floating prevention piece protruding toward the locking position at the bottom of the top plate. In addition, after the connection of the connecting scaffolding plate, it is necessary to return to the lock position again, which is troublesome. In addition, although it is strong against winds blown from below due to the anti-lifting piece, it is difficult to resist the lateral displacement, and there is a risk that the connecting scaffolding plate will shift when moving multiple connected scaffolds at the same time. there were.

  Moreover, although the connection tool disclosed in Patent Document 2 may certainly be strong, the connection operation takes time and effort.

As described above, the conventional connecting tool has a problem in operability, and in particular, when a plurality of scaffolds and stepladders are prepared at a work site and the scaffolding plate is connected to this to expand the area of the scaffold. There was nothing that could satisfy the people.
An object of the present invention is to provide a connecting tool capable of solving the above-described conventional problems, a connecting scaffold plate including the connecting tool, and a handrail.

  The first aspect of the present invention is a first engagement portion that is attached to a connection target member and engages with a plate-like connection partner member from below, and a second engagement portion that engages from above. And the first engaging portion is formed at the lower end portion of the upper and lower end portions sandwiching the support shaft of the lock plate rotatably attached around the support shaft provided in a substantially horizontal state. It provides tools.

  According to a second aspect of the present invention, there is provided the coupling tool according to the first aspect, further comprising a mounting plate on which the support shaft protrudes and is capable of coming into contact with a connection side end surface of the connection partner member. The second engaging portion is configured by projecting an engaging protrusion on the back surface of the engaging plate extended in a substantially horizontal direction.

  According to a third aspect of the present invention, in the connecting tool according to the second aspect, a plurality of the engaging protrusions are arranged in parallel.

  According to a fourth aspect of the present invention, in the connector according to any one of the first to third aspects, the first engagement portion is a hook portion, and the hook portion is connected to the connection side of the connection partner member. A taper portion that rotates the lock plate in a direction in which the hook portion is disengaged when moved downward while in contact with the end surface is formed.

  According to a fifth aspect of the present invention, in the connecting device according to any one of the first to fourth aspects, an elastic device that biases the lock plate toward the first engaging portion is disposed. Features.

  According to a sixth aspect of the present invention, in the connecting device according to the fifth aspect, a lever portion is formed on the upper end portion of the lock plate so that the lock plate can be rotated against the urging force of the elastic device. It is characterized by that.

  According to a seventh aspect of the present invention, there is provided the connector according to any one of the first to sixth aspects, wherein the first engagement portion is engaged in the vicinity of the connection side end portion of the connection partner member. A fitting convex portion and an engaging hole portion into which the second engaging portion is inserted are provided.

  The present invention according to claim 8 is the connection tool according to claim 7, further comprising an attachment that can be detachably attached to the connection side end of the connection partner member, and the engagement protrusion on the attachment. And the engaging hole.

  The present invention according to claim 9 is a connection scaffolding plate detachably connectable to a scaffolding provided with a top plate supported by a plurality of legs, and the top end of the scaffolding as a connection partner member The connection scaffolding board which provides the connection tool of any one of Claims 1-8 in the connection end edge part which opposes an edge part is provided.

  A tenth aspect of the present invention is a handrail that is detachably connectable to a scaffold having a top plate supported by a plurality of legs, and is attached to a top plate edge of the scaffold as a connection partner member. The handrail which provides the coupling tool of any one of Claims 1-8 in the lower end part of the support | pillar to stand is provided.

  (1) According to the connector according to the first aspect of the present invention, the first engagement portion that is attached to the connection target member and engages with the plate-shaped connection partner member from below, and from above An upper and lower end sandwiching the support shaft of a lock plate that is rotatably mounted around a support shaft provided in a substantially horizontal state. Since the first engaging portion and the second engaging portion can be firmly engaged with the connection counterpart member from above and below, the connection target member and the connection counterpart member are formed. Can be reliably connected, and the operation for connection becomes extremely simple.

  (2) According to the second aspect of the present invention, there is provided a mounting plate on which the support shaft protrudes and can be brought into contact with the connection side end surface of the connection partner member, and is substantially horizontal from the upper end of the mounting plate. The second engaging portion is formed by projecting an engaging protrusion on the back surface of the engaging plate extended in the above manner. As described above, since the connector is attached to the connection target member via the mounting plate, in addition to the effect (1), the connection tool can be easily attached to various connection target members. Thus, any member can be attached to and detached from a desired connection partner member. In addition, an engagement plate is formed on the attachment plate, an engagement protrusion is provided on the engagement plate, and a lock plate can be attached to the attachment plate. Becomes compact.

  (3) According to the third aspect of the present invention, since a plurality of the engaging protrusions are arranged side by side, in addition to the effect of the above (1) or (2), an external force applied in the horizontal direction can also be connected. The members are not displaced, and it is also possible to move horizontally while the connection target member and the connection partner member are connected.

  (4) According to the present invention as set forth in claim 4, when the first engaging portion is a hook portion, and the hook portion is moved downward while in contact with the connection side end surface of the connection partner member. In addition to the effects (1) to (3) above, since the taper portion that rotates the lock plate in the direction to release the engagement of the hook portion is formed, the connection target member is lowered from above with respect to the connection partner member. It can be firmly connected with simple operations.

  (5) According to the fifth aspect of the present invention, in addition to the effects (1) to (4) described above, the elastic tool for urging the lock plate toward the first engaging portion is provided. Since the hook portion is automatically locked with respect to the connecting partner member, the connecting operation is remarkably facilitated.

  (6) According to the sixth aspect of the present invention, the lever portion that allows the lock plate to rotate against the urging force of the elastic member is formed on the upper end portion of the lock plate. In addition to the effects 1) to (5), the lock can be easily released.

  (7) According to the present invention as set forth in claim 7, the engagement by the first and second engaging portions becomes more reliable, and the effects (1) to (3) can be further enhanced.

  (8) According to the present invention as set forth in claim 8, simple and reliable connection can be achieved by facilitating an attachment corresponding to any connection partner member. In addition to the effect of 7), versatility as a connecting tool is remarkably improved.

  (9) According to the present invention as set forth in claim 9, a plurality of scaffolds that can be used independently are prepared, and a scaffold having a desired scaffold area can be easily obtained by adding a coupling scaffold plate between them. Can be built.

  (10) According to the tenth aspect of the present invention, it is possible to easily attach the handrail to the scaffold.

The connection tool according to the present embodiment is attached to a connection target member, and engages with a plate-shaped connection partner member from below, and a second engagement engaged from above. And the first engaging portion is formed at the lower end portion of the upper and lower end portions sandwiching the support shaft of the lock plate that is rotatably mounted around the support shaft provided in a substantially horizontal state. Is.
That is, when connecting two members (a connection target member and a plate-like connection partner member), by using the connector according to this embodiment provided on one member (connection target member), Thus, a firm connection structure can be realized by firmly engaging the first engaging portion and the second engaging portion from both the upper and lower directions. It is desirable that the first engagement portion is formed in a hook shape, for example, so that the first engagement portion can be reliably engaged with the connection partner member. On the other hand, the shape and structure of the second engaging portion are not particularly limited as long as the second engaging portion is engaged with the connection partner member in a superposed state.

As a connection object member, it can be set as the scaffold board for connection which can be connected detachably with the scaffold provided with the top plate supported by the several leg body, for example. And the said connector is arrange | positioned in the connection edge part of the said scaffold board for a connection facing the top-plate edge part of the said scaffold used as a connection other party member.
With such a connecting scaffolding board, a plurality of existing scaffolds that can be used independently are prepared, and the connecting scaffolding board is added between them, so that an assembly scaffolding having a desired scaffolding area can be easily created on site. Can be built.

Further, the connection tool has a configuration in which the support shaft protrudes and an attachment plate capable of contacting the connection-side end surface of the connection partner member is provided, and an engagement protrusion protrudes from the back surface of the engagement plate. Thus, the second engaging portion including the engaging protrusion can be obtained. For example, as described above, the second engaging portion may be only the engaging plate extended in the substantially horizontal direction from the upper end of the mounting plate, but it is more reliable by providing the engaging protrusion. Connection becomes possible. In addition, what is necessary is just to use what is according to the shape and magnitude | size of a connection other party member as an engagement plate. As described above, since the lock plate and the engagement protrusion can be provided on the mounting plate, the connector has a compact and rational configuration.
Moreover, since it can attach to various connection object members other than the said scaffolding board for connection by interposing the said attachment board, the applicable range as a connection tool spreads. Therefore, any member can be configured to be detachable from the desired connection partner member.

  By the way, it is desirable that a plurality of engaging projections provided on the back surface of the engaging plate be provided side by side. That is, the connection target member such as the connection scaffold plate does not shift even with an external force applied in the horizontal direction, and even an assembly scaffold in which the connection scaffold plate is connected to the scaffold is in an assembled state. It is also possible to move horizontally to an arbitrary position.

In addition, the first engaging portion is a hook portion, and when the hook portion is moved downward in contact with the connection side end surface of the connection partner member, the hook portion is locked in a direction to release the engagement. A tapered portion for rotating the plate may be formed.
For example, when connecting the scaffolding plate to the scaffolding, it may be a simple operation of simply lowering the coupling scaffolding plate from above with respect to the top plate of the scaffolding. It becomes possible to connect, and the construction work efficiency of the scaffold which has a large scaffold area improves.

Further, it is desirable that an elastic tool for urging the lock plate toward the first engagement portion is disposed on the connection tool.
That is, in the above-described scaffold construction work, the hook part serving as the first engagement part is automatically locked to the connection partner member (the top plate of the scaffold), so that the connection work becomes extremely easy.

Furthermore, it is even better if a lever portion is formed at the upper end of the lock plate so that the lock plate can be rotated against the urging force of the elastic tool. That is, the lock can be easily released by operating the lever.
In this case, when the member to be connected is a plate-like body such as a connection scaffolding plate, and the connection tool is provided at the end edge thereof, the lever portion is rotated on a part of the plate-like body. It is good to provide the notch part for doing. By making the lever part face the notch part, the state of the lock plate can be visually recognized from the coupling scaffolding plate, and the manual operation can be easily performed.

In addition, an engagement convex portion that engages with the first engagement portion and an engagement hole portion into which the second engagement portion is fitted are provided in the vicinity of the connection side end portion of the connection partner member. it can.
That is, by providing the connecting mating member with a convex portion that securely engages with the hook of the first engaging portion and a hole portion into which the protrusion of the second engaging portion is fitted, the engaging force as the connecting tool is further increased and strengthened. A connected structure.

Furthermore, the attachment which can be detachably attached to the connection side edge part of the said connection partner member is provided separately, and the said convex part for engagement and the said hole for engagement can be provided in this attachment.
That is, by providing the attachment having the above-described configuration, as a connection partner member, for example, in addition to the top plate of the scaffold, a connection target member can be attached to various plate-like connection partner members. Even if it is a member, it becomes possible to easily and reliably connect a desired connection target member. For example, a step ladder of a stepladder can be used as a connection partner member, and a work plate or the like can be connected as a connection target member between two stepladders.

By the way, as a connection object member, it can also be set as the handrail which was able to be connected detachably with the scaffold provided with the top plate supported by the several leg body, for example.
The above-mentioned connecting tool is attached to the lower end portion of the support column standing on the edge of the top plate of the scaffold, and a handrail can be easily attached to the installed scaffold as necessary.

Hereinafter, embodiments of the present invention will be described more specifically with reference to the drawings. FIG. 1 is a front view of the assembly scaffold, and FIG. 2 is a plan view of the assembly scaffold. In addition, in this embodiment, the connection tool shall be provided in the connection scaffold board for connecting with a scaffold.
1 and 2, A is an assembly scaffold, and this assembly scaffold A is composed of an existing scaffold 1 that can be used alone, a coupling scaffold plate 2, a handrail 3, and a ladder 6. .
In the present embodiment, the two scaffolds 1 are installed in an opposing state with a space therebetween, and the necessary number (four in the present embodiment) of the connecting scaffold plates 2 are spanned between the two scaffolds 1 and 1 in a predetermined manner. A wide work area is secured, and the handrail 3 and the ladder 6 are attached to necessary places. In the figure, reference numeral 15 denotes a connection auxiliary rod for connecting the lower portions of the scaffolds 1 and 1.

FIG. 3 is a front view of the scaffold 1 and FIG. 4 is a plan view thereof.
As shown in the figure, the scaffold 1 is configured by supporting a rectangular top plate 10 on which a punching metal 11 is stretched by four leg posts 12, and can be folded in two from the central portion of the top plate 10. Yes. Moreover, one attachment is attached to the edge 12a of the top plate 10 on the short side and two attachments 4 (see FIG. 7) on the long side. The attachment 4 will be described in detail later. In FIG. 3, reference numeral 13 denotes a caster attached to the lower end of the pedestal column 12, and reference numeral 14 denotes a reinforcing frame for connecting the respective pedestal columns 12.

5A is a plan view of the coupling scaffold plate 2, FIG. 5B is a front view thereof, and FIG. 5C is a side view thereof.
As shown in FIG. 5, the connection scaffolding plate 2 is formed in a flat horizontally-long rectangular frame shape having an opening on the lower surface, and the left and right end edges 21 a and 21 b forming the short side of the foot scene 21 are arranged at the center. Each of them is provided with a connector 5.
The connecting scaffolding plate 2 and the scaffolding 1 are connected via the connecting tool 5. At this time, the left and right end edges 21 a and 21 b and the end of the top plate 10 of the scaffolding 1 as a connecting partner member are connected. The edge 12a is opposed to each other, and the connection scaffolding plate 2 and the scaffolding 1 are substantially flush with each other. The foot scene 21 has a number of anti-slip patterns 22 formed by burring.
Further, as shown in FIG. 5B, a substantially rectangular window portion 23 is cut out so as to approach the left and right end edge portions 21a and 21b of the foot scene 21. This window part 23 enables the connection tool 5 described below to be visually recognized from the foot scene 21 side, and allows operation from the foot scene 21.

Here, the structure of the coupler 5 which makes the principal part in this embodiment is demonstrated, referring FIGS. FIG. 6 is an explanatory view showing the main part of the coupling scaffolding plate 2 according to the present embodiment in a sectional view, FIG. 7A is a side view of the attachment, FIG. 7B is the same plan view, and FIG. ) Is a front view thereof, FIG. 7 (d) is a bottom view thereof, and FIGS.
As shown in FIG. 6, the connection tool 5 which concerns on this embodiment is each attached to the right-and-left end part of the said connection scaffold board 2 used as a connection object member, The said scaffold 1 which is a plate-shaped connection partner member. A hook portion 51 that is a first engagement portion that engages with the top plate 10 from below, an engagement plate 56 that is a second engagement portion that engages from above, and the engagement plate 56. And an engaging protrusion 52 that protrudes.
The hook portion 51 is formed at the lower end portion of the lock plate 50 that is rotatably mounted around the support shaft 53, and the upper and lower end portions sandwiching the support shaft 53 have a lever portion 54 at the upper end portion. Is formed.

The support shaft 53 that rotatably supports the lock plate 50 protrudes from a mounting plate 55 provided with the engagement protrusion 52.
That is, the attachment plate 55 is a vertical wall 55a (a connection scaffold plate for contact with a vertical surface 4b of the attachment 4 attached to the scaffold 1 (see FIG. 7 and FIG. 8 which forms the connection side end surface of the scaffold 1). 2 has an engagement plate 56 extending in a substantially horizontal direction from the upper end of the left end edge portion 21a), and the engagement projection 52 is attached to a substantially central position of the engagement plate 56, and on the back side of the vertical wall 55a. A mounting plate 57 formed in a substantially L shape in a plan view is fixed, and the support shaft 53 projects from the mounting plate 57. A screw 57 b connects the mounting plate 57 to the mounting plate 55.

  As described above, since the lock plate 50 having the hook portion 51 and the engagement plate 56 having the engagement protrusion 52 are integrally provided on one mounting plate 55, the connector 5 has a compact and rational configuration. Therefore, it is easy to attach the connecting scaffolding plate 2.

  By the way, although the number of the engagement protrusions 52 is one here, a plurality of them can be arranged at a predetermined interval. For example, one piece can be provided on each of the left and right sides so as to sandwich the lock plate 50. If a plurality of engaging projections 52 are provided in this way, for example, even if an external force is applied to the coupling scaffold plate 2 in the horizontal direction, it does not shift. Further, it is possible to horizontally move the assembly scaffold A (see FIGS. 1 and 2) in which the coupling scaffold plate 2 is coupled to the scaffold 1 in an assembled state.

Further, as shown in FIG. 6, the connector 5 is provided with a coil spring 58 as an elastic member that urges the lock plate 50 toward the hook portion 51. In the present embodiment, the coil spring 58 is stretched between a locking portion 57 a formed on the mounting plate 57 and a locking pin 54 a protruding in the vicinity of the lever portion 54 of the lock plate 50.
By providing the coil spring 58, the hook portion 51 is automatically engaged with and locked to the top plate 10 of the scaffold 1.

The attachment 4 to be attached to the scaffold 1 is detachably attached to the edge 12a of the scaffold 1 (the connection side end of the connection partner member). As shown in FIG. The steel plate is bent in a substantially L-shape so that the upper surface 4a overlapping on the side surface and the vertical surface 4b facing the vertical wall 55a of the mounting plate 55 are formed, and the lower end portion of the vertical surface 4b is unnecessary. The part is notched and a part is bent to form a pair of left and right lower surfaces 4c, 4c. And the connection holes 43a and 43b are formed in the said upper surface 4a and the lower surface 4c, and it connects and fixes with the volt | bolt 43 to the edge part 12a of the top plate 10 of the scaffold 1 as shown in FIG.
Moreover, the 1st long hole 42 and the 2nd long hole 44 shorter than this are formed in the left-right side of the upper surface 4a, and the 1st long hole 42 is made into the said engagement protrusion 52 in this embodiment. Is a hole for engagement. Further, the lower end of the vertical surface 4 b is an engaging convex portion 41 that engages with the hook portion 51. In this way, by providing the attachment 4 with the engagement convex portion 41 that reliably engages with the hook portion 51 and the first elongated hole 42 into which the engagement protrusion 52 is inserted, the engagement force as the connector 5 is increased. It is sufficiently high so that it has a strong connection structure. In the drawing, reference numeral 44 denotes a sub-long hole, which is provided to insert the engaging protrusion 52 when the members to be connected are different.

  Since the attachment 4 is provided, the connection tool 5 is applied not only to the top plate 10 of the scaffold 1 as in the present embodiment, but also to various plate-shaped connection members as the connection member. However, the attachment 4 is not necessarily required. For example, the top plate 10 has a hole corresponding to the first long hole 42 and a protrusion corresponding to the engagement protrusion 41. You may form directly.

  Further, when the hook portion 51 is moved downward in contact with the vertical surface 4 b of the attachment 4, the lock plate 50 can be rotated in a direction in which the hook portion 51 is disengaged. A tapered portion 50a is formed. By forming the taper portion 50a, when the coupling scaffold plate 2 is coupled between the scaffolds 1 and 1, the simple operation of simply lowering the coupling scaffold plate 2 with respect to the top plate 10 of the scaffold 1 from above. Will be able to do it.

Hereinafter, the operation of the connector 5 will be described with reference to FIGS.
When the connecting scaffolding plate 2 is stretched between the scaffolds 1 and 1, first, as shown in FIG. 9, the connecting scaffolding plate 2 is lowered with respect to the scaffold 1 from above. At this time, the taper surface 50 a of the lock plate 50 abuts on the attachment 4 of the scaffold 1. When further lowered as it is, the lock plate 50 is rotated counterclockwise in FIG. 9 by the tapered surface 50a, and the tip of the hook portion 51 comes into contact with the vertical wall 4b of the attachment 4 (FIG. 10).
Then, when further lowered in this state, the tip of the hook portion 51 is separated from the engaging convex portion 41 of the attachment 4 as shown in FIG. If there is no contact surface in this way, the lock plate 50 is rotated clockwise in the drawing by the action of the coil spring 58, and the hook portion 51 is firmly engaged with the engaging convex portion 41. The state shown in FIG. 8 is obtained.
At this time, the engaging protrusion 52 is already inserted into the first long hole 42 of the attachment 4 and is also inserted to the hole of the punching metal 11 of the top plate 10, and the engaging plate 56 is in contact with the top plate 10. The connection scaffold plate 2 is connected to the top plate 10 of the scaffold 1 in a substantially flush state.

  In this way, the connection scaffold plate 2 that is firmly connected causes a torsion or the like due to a load being applied as an external force from the lateral direction during work, for example, and as shown in FIG. 12, the mounting plate 55 and the attachment 4 Even if a gap d is generated between them, the coupling 5 is firmly engaged and there is no possibility that the engagement is released. In addition, since the engaging protrusions 52 are inserted through the top plate 1 from above, the connecting scaffold plate 2 can hold a relative position with respect to the top plate 10, so that the shape of the assembly scaffold A is also disturbed. There is no safety.

  Further, for example, even when a gust of wind blows and blows up from below the coupling scaffolding plate 2, the coupling scaffolding plate 2 slightly floats, for example, between the mounting plate 55 and the attachment 4. Even if there is a gap D in the vertical direction, the hook portion 51 is firmly engaged with the engaging convex portion 41, there is no risk of falling off, and the floating amount of the coupling scaffolding plate 2 is also small as shown in the figure, There is no problem even during work.

  By the way, as shown in FIG. 14, the hook portion 51 formed at the tip of the lock plate 50 of the connector 5 according to the present embodiment is opposed to the tip of the engaging convex portion 41 when the lock plate 50 rotates. Therefore, even when the hook portion 51 is engaged with the engaging convex portion 41, the engaged state can be easily released by operating the lever portion 54. Can do.

That is, an operator who is on the coupling scaffolding plate 2 or the top plate 10 of the scaffolding 1 pulls up the lever portion 54 from the window portion 23 formed in the foot scene 21 to easily engage the hook portion 51. You can solve the problem. At this time, as shown in FIG. 15, the coil spring 58 is over the dead center with respect to the support shaft 54, so that the lock plate 50 is not pulled back. The edge portion 23a of the portion 23 serves as a stopper, and the raised stationary state can be maintained without the lock plate 50 rotating more than necessary.
Further, in this case, since the lever portion 54 is in a state of protruding from the window portion 23, if the lever portion 54 is rotated so as to be returned downward by operating the lever portion 54, the hook portion 51 is moved by the coil spring 58. Since it automatically engages with the engaging projection 41, it can be easily engaged again even from above the foot scene 21.
In this way, the window portion 23 is formed in the foot scene 21 so that the lock plate 50 of the connector 5 can be rotated from the window portion 23, and the lock plate 50 can be stopped in a disengaged state. Therefore, for example, when removing the connected scaffolding plate 2 for connection, it is only necessary to operate the lever portion 54 for each side, and even one worker can easily perform.

Further, in this embodiment, the handrail connector 5 ′ having the same configuration and function as the above-described connector 5 is also attached to the handrail 3 shown in FIGS. 1 and 2, and can be easily attached to and detached from the scaffold 1. It is said. 16A is a front view showing a lower end portion of the handrail 3, FIG. 16B is a side view thereof, and FIG. 16C is a plan view thereof. In addition, the same code | symbol is attached | subjected about the component which has the same function as the connector 5 attached to the connection scaffold board 2, and detailed description here is abbreviate | omitted.
As shown in FIGS. 1 and 2, the handrail 3 according to the present embodiment is attached with a handrail main body 32 composed of two upper and lower side rails 32 a and 32 b so as to intersect the two pillars 31 and 31. In this embodiment, handrail couplers 5 'having substantially the same configuration as described above are attached to the lower ends of the two columns 31, 31, respectively.
Further, when the handrail 3 is attached to the scaffold 1, a connecting handrail 30 having a required length can be connected between the two handrails 3 and 3 according to the size of the scaffold 1.

In the present embodiment, the handrail couplers 5 ′ attached to the two struts 31 are connected to each other by the operating rod 7 as shown in FIG. 16.
That is, the opposite side surfaces of the lock plate 50 of each handrail coupler 5 ′ are connected by the operating rod 7, and the two operating lock plates 50 can be rotated simultaneously by rotating the operating rod 7. I have to. Therefore, when removing the handrail 3 connected to the scaffold 1, the hook 51 of each handrail connector 5 ′ and the top plate 10 of the scaffold 1 are disengaged by a one-touch operation for rotating the operation rod 7. Can do.
Thus, as a connection structure with the scaffold 1 of the handrail 3, the handrail connection tool 5 ′ is attached to each of the plurality of connection target members including the two columns 31 and 31, and each connection tool 5 ′ is united. This is different from the connection scaffolding plate 2 in that it is interlocked and connected by an operation rod 7 that is an operation part.

Further, as shown in FIG. 16C, in this handrail coupler 5 ′, the engagement protrusions 52 provided on the engagement plate 57 are arranged so as to be positioned in front of each lock plate 50. The engaging protrusions 52 and 52 are inserted into the second long hole 44 formed in the attachment 4.
Thus, by providing the two engaging protrusions 52, even if an external force is applied to the handrail 3 in the horizontal direction, no positional deviation occurs, and the safety of the handrail 3 is improved. Further, even when an upward force is applied to the handrail 3, as described above, the hook portion 51 is firmly engaged with the top plate 10 of the scaffold 1 from below, so that there is a possibility that the handrail 3 may be lifted and dropped. Absent.

From the embodiments described above, the following connecting tool, a connecting scaffolding plate including the connecting tool, and a handrail can be realized.
A first engaging portion that is attached to a connection target member (for example, the connection scaffolding plate 1 or the handrail 3) and engages with a plate-shaped connection partner member (for example, the top plate 10 of the scaffold 1) from below. (For example, a hook portion 51) and a second engagement portion (for example, including an engagement plate 56 or an engagement protrusion 52 protruding from the engagement plate 56) engaged from above. The first engagement portion (hook portion 51) is arranged at the lower end portion of the upper and lower end portions sandwiching the support shaft 53 of the lock plate 50 rotatably attached around the support shaft 53 provided in a substantially horizontal state. The formed connector (for example, connector 5, handrail connector 5 ′). That is, in this connection tool, the shape and structure of the second engagement portion are not particularly limited as long as the second engagement portion is engaged with the connection partner member in a superposed state.

  In the connecting tool, the support shaft 53 protrudes and is connected to the connecting side end surface (for example, the end surface of the top plate 10 of the scaffold 1 or the scaffold 1) of the connection partner member (the top plate 10 of the scaffold 1). An attachment plate 55 that can contact the vertical surface 4b) of the attachment 4 is provided, and an engagement protrusion 52 is provided on the back surface of the engagement plate 57 that extends from the upper end of the attachment plate 55 in a substantially horizontal direction. 2 is a connecting tool (connecting tool 5, handrail connecting tool 5 ').

  A connecting tool (connecting tool 5, handrail connecting tool 5 ') in which a plurality of the engaging protrusions 52 are arranged side by side.

  The first engagement portion (hook portion 51) is connected to the connection-side end surface (the end surface of the top plate 10 of the scaffold 1 or the attachment 4 attached to the scaffold 1) of the connection partner member (the top plate 10 of the scaffold 1). A connecting tool (connecting tool 5, connection for handrail) formed with a taper portion 50a for rotating the lock plate 50 in a direction to release the engagement of the hook portion 51 when it moves downward in contact with the vertical surface 4b). Ingredient 5 ').

  A connector (connector 5, handrail connector 5 ') provided with an elastic tool (for example, coil spring 58) that urges the lock plate 50 toward the first engagement portion (hook portion 51).

  At the upper end of the lock plate 50, a connector (connector 5, handrail connection) is formed with a lever portion 54 that can rotate the lock plate 50 against the urging force of the elastic tool (coil spring 58). Ingredient 5 ').

  An engaging convex portion 41 that engages with the first engaging portion (hook portion 51) and the second engaging portion in the vicinity of the connecting side end portion of the connecting partner member (top plate 10 of the scaffold 1). A coupler (connector 5, handrail coupler 5 ′) provided with an engagement hole (for example, the first long hole 42 or the second long hole) into which the (engagement protrusion 52) is inserted.

  An attachment 4 that can be detachably attached to the connection side end of the connection partner member (the top plate 10 of the scaffold 1) is provided separately, and the engagement projection 41 and the engagement hole ( A connector provided with a first elongated hole 42 and a second elongated hole (connector 5, handrail connector 5 ').

  A scaffolding plate 2 for connection that is detachably connectable to a scaffold 1 including a top plate 10 supported by a plurality of legs (for example, pedestals 12), and the top of the scaffold 1 that serves as a connection partner member A coupling scaffolding plate 2 in which any of the above-described coupling tools 5 is disposed on a coupling edge that faces the edge of the plate 10.

  A handrail 3 that is detachably connectable to a scaffold 1 having a top plate 10 supported by a plurality of legs (for example, pedestals 12), the top plate 10 of the scaffold 1 serving as a connection partner member. A handrail 3 in which any one of the above-described connectors (handrail connector 5 ') is disposed at the lower end portion of the column 31 standing on the edge.

  It should be noted that the present invention is not limited to the configuration described in the above embodiment, and modifications or design changes can be made without departing from the gist of the claims. In addition, the effects described in the embodiment of the present invention only list the most preferable effects resulting from the present invention, and are not limited to those of the present embodiment.

It is a front view of an assembly scaffold. It is a top view of the assembly scaffold. It is a front view of the existing scaffold which comprises an assembly scaffold. It is the same top view. It is explanatory drawing of the connection scaffold board. It is explanatory drawing which showed the principal part of the coupling scaffold board in the cross sectional view. It is explanatory drawing of an attachment. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is operation | movement explanatory drawing of a coupling tool. It is explanatory drawing of a handrail.

Explanation of symbols

A assembly scaffolding 1 scaffolding 2 scaffolding plate for connection 3 handrail 4 attachment 4b vertical surface 5 coupling tool 5 'handrail coupling tool 10 top plate 41 engaging convex portion 42 first elongated hole (engaging hole portion)
44 2nd long hole (hole for engagement)
50 Lock plate 51 Hook part (first engaging part)
52 engaging protrusion (second engaging portion)
53 Support shaft 55 Mounting plate 58 Coil spring (elastic tool)

Claims (10)

A first engagement portion that is attached to the connection target member and engages with the plate-like connection partner member from below; and a second engagement portion that engages from above.
The connection characterized in that the first engaging portion is formed at a lower end portion of upper and lower end portions sandwiching the support shaft of a lock plate that is rotatably mounted around a support shaft provided in a substantially horizontal state. Ingredients.   The support shaft is provided with a mounting plate that can be brought into contact with the connection-side end surface of the connection partner member, and an engagement protrusion is provided on the back surface of the engagement plate that extends substantially horizontally from the upper end of the mounting plate. The coupling device according to claim 1, wherein the second engaging portion is formed by protruding.   The coupling tool according to claim 2, wherein a plurality of the engaging protrusions are arranged side by side.   The first engagement portion is a hook portion, and when the hook portion is moved downward in contact with the connection side end surface of the connection partner member, the lock plate is moved in a direction to release the engagement of the hook portion. The connecting tool according to any one of claims 1 to 3, wherein a tapered portion is formed.   The coupling tool according to claim 1, wherein an elastic tool that urges the lock plate toward the first engaging portion is disposed.   6. The coupling device according to claim 5, wherein a lever portion that allows the lock plate to rotate against an urging force of the elastic member is formed at an upper end portion of the lock plate.   An engagement convex portion for engaging with the first engagement portion and an engagement hole portion for inserting the second engagement portion are provided in the vicinity of the connection side end portion of the connection partner member. The connector according to any one of claims 1 to 6.   8. An attachment that can be detachably attached to a connection side end of the connection partner member is separately provided, and the engagement convex portion and the engagement hole are provided on the attachment. The coupling tool described. A coupling scaffolding plate detachably connectable to a scaffolding provided with a top plate supported by a plurality of legs,
The connection scaffold board which arrange | positions the connection tool of any one of Claims 1-8 in the connection edge part which opposes the top-plate edge part of the said scaffold used as a connection partner member. A handrail that is detachably connectable to a scaffolding provided with a top plate supported by a plurality of legs,
The handrail which arrange | positions the coupling tool of any one of Claims 1-8 in the lower end part of the support | pillar standingly arranged in the top-plate edge part of the said scaffold used as a connection partner member.

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