JP6781454B2 - Scaffolding board connector and scaffolding board connecting structure - Google Patents

Description

The present invention relates to a scaffolding board connecting tool for connecting the ends of scaffolding boards to each other, and a scaffolding board connecting structure using the scaffolding board connecting tool.

At the site of civil engineering work and construction work, a large number of scaffolding boards may be connected in series to form a passage for workers and trolleys to pass through. As a result, for example, even if the ground is uneven, it can pass without being affected by it. In addition, when digging a tunnel by the shield method, the tunnel hole formed behind the excavation machine is cylindrical, so a horizontal passage is formed by laying a scaffolding board over the laid sleepers and connecting them continuously. doing.

When a large number of scaffolding plates are connected in series in this way, conventionally, the ends of adjacent scaffolding plates are vertically overlapped with each other, and a wire is wound to connect them. Therefore, a step is formed in the passage at the connecting point of the scaffolding board, and there is a risk that a pedestrian may trip over. In addition, when the wheels of the dolly or the like are made to get over the step, the labor burden of the operator pushing the dolly is large, and the posture of the transported object may become unstable or fall due to the vibration when getting over the step. .. Further, when connecting a large number of scaffolding plates, there is a problem that the labor and time required for winding the wire at each connecting location is large.

Therefore, a scaffolding board having a structure for connecting at the end is also implemented. For example, a scaffolding plate is used in which a pair of convex portions and concave portions are provided at both ends of the scaffolding plate, and the positions of the convex portions and the concave portions are staggered at one end and the other end. There is. With such a configuration, the scaffolding plates can be connected by fitting the convex portion of one scaffolding plate into the concave portion of the other scaffolding plate between two adjacent scaffolding plates.

However, scaffolding plates having a special structure for connection can be connected only to scaffolding plates having such a structure. However, at the actual site, the business operator already owns a large number of general-purpose scaffolding boards that do not have a special structure, and a large amount of scaffolding boards are required for construction, so all of them have a special structure. Switching to scaffolding boards is not practical. In addition, many companies rent materials including scaffolding boards from rental companies for construction, but the scaffolding boards handled by rental companies are generally general-purpose scaffolding boards that do not have a special structure. is there.

In addition, the conventional scaffolding plate in which one convex portion of an adjacent scaffolding plate is fitted into the other concave portion and connected is inconvenient in that only a part of the scaffolding plate cannot be removed after connecting a large number of scaffolding plates. Met.

Therefore, general-purpose scaffolding boards that do not have a structure for connecting at the ends can be easily connected without overlapping the ends one above the other, and even after connecting a large number of scaffolding boards, A scaffolding board connector that can remove only some of the scaffolding boards has been requested.

Therefore, in view of the above circumstances, the present invention can easily connect general-purpose scaffolding plates having no structure for connection at the ends without overlapping the ends one above the other. An object of the present invention is to provide a scaffolding plate connecting tool capable of removing only a part of the scaffolding boards even after connecting a large number of scaffolding boards, and a scaffolding board connecting structure using the scaffolding board connecting tool. ..

In order to solve the above problems, the scaffolding plate connecting tool (hereinafter, may be simply referred to as "connecting tool") according to the present invention is used.
"A substantially rectangular and flat base portion, a pair of side wall portions extending upward from each of the pair of side sides of the base portion, and a pair of side wall portions extending upward from the upper ends of each of the side wall portions. With the main body of the connector that has the upper wall part
A pair of holes separated from each other in the front-rear direction orthogonal to the width direction in which the pair of side wall portions are separated, and at least a pair of holes penetrating the base portion.
Below the base portion, at positions corresponding to the pair of the hole portions, a pair of flat plates separated in the front-rear direction and extending in the width direction, respectively.
A vertical portion extending from both ends of each of the pair of flat plates toward the connector body, and
In the pair of the side wall portions, a slit which is formed coaxially with each of the extending portions so as to penetrate at least to the base portion and through which the extending portion is inserted.
A coil spring that urges the flat plate body toward the base portion, and
It protrudes from each of the pair of the flat plate bodies, and when the flat plate body approaches the base portion due to the urging of the coil spring, it protrudes upward from the base portion through the hole portion to urge the coil spring. It is provided with a protrusion that immerses below the edge of the hole when the flat plate is separated from the base. "

Then, in the present configuration, the "coil spring" "is inserted through the pin-shaped extending portion in the slit, is prevented from coming off from the slit, and is attached to the flat plate body via the extending portion. An interposition between the flat plate-shaped fixing plate portion fixed to the connector main body so as to intersect the flat plate body below the flat plate body and the flat plate body. The flat plate body is urged ".

As specified above, in this document, the direction in which the pair of side wall portions are separated from each other is defined as the "width direction", and the direction orthogonal to the width direction is defined as the "front-back direction". Further, "upper" and "lower" refer to "upper" and "lower" in the connecting tool when the scaffolding plates are connected so as to be horizontal.

In the above configuration, the "holes" are provided with "at least a pair" of two separated in the front-rear direction. The pair of flat plates are located at positions corresponding to the pair of holes, and the protrusions protruding from the flat plates are configured to protrude upward from the base through the holes. Therefore, when a plurality of pairs of holes are provided, it is preferable to provide the same number of protrusions as the number of pairs of holes in each pair of flat plates at positions corresponding to the holes.

The scaffolding board to be connected by the connecting tool having the above configuration is a general-purpose scaffolding board that does not have a structure for connecting at the end, and is common in the basic configuration in accordance with the standards of the Temporary Industry Association. It is a scaffolding board. As a common basic configuration, the scaffolding board to be connected has a scaffolding board main body and a pair of end covers provided at both ends of the scaffolding board main body. Here, the scaffolding plate main body has a rectangular top surface portion and a pair of side surface portions extending from each of the pair of long sides of the top surface portion, so that a cross section cut in a direction orthogonal to the long axis direction is opened downward. It forms a character shape. Further, the end cover is formed by a rectangular covering portion, an upper surface portion extending from one of the pair of long sides of the covering portion, and a lower surface portion extending from the other of the pair of long sides of the covering portion, thereby forming the scaffolding plate main body. The cross section cut in the major axis direction forms a substantially U-shape that opens in the major axis direction, the end portion of the scaffolding plate body is covered with the covering portion of the end cover, and the upper surface portion of the end cover is covered with the scaffolding plate main body. The pair of side surfaces of the scaffolding plate body are connected by the lower surface of the end cover while being overlapped on the top surface of the scaffold.

Using the connector having the above configuration, two general-purpose scaffolding plates having the above configuration can be connected in series as follows. First, in the connecting tool, a pushing force is applied to the pair of extending portions extending from both ends of one of the pair of flat plates toward the connecting tool main body against the bias of the coil spring. As a result, the flat plate body can be separated from the base portion, and the protrusion portion can be immersed below the edge of the hole portion in the base portion. In this state, one end of the two scaffolding plates to be connected is made to enter the space formed by the base portion and the pair of side wall portions in the connecting tool in the front-rear direction. Then, when the lower surface portion of the scaffolding plate exceeds the position of the protruding portion protruding from the flat plate body separated at that time, the force pushing down the extending portion is removed. As a result, the flat plate body approaches the base portion due to the urging of the coil spring, and the protrusion portion protrudes upward from the base portion via the hole portion.

Similarly, in the connector, a force that pushes down against the urging of the coil spring is applied to the pair of extension portions extending from both ends of the other end of the pair of flat plates toward the connector body. The protrusion is recessed below the edge of the hole, and the other end of the two scaffolding plates to be connected is allowed to enter the space inside the connector from opposite directions. Then, when the lower surface of the scaffolding plate exceeds the position of the protrusion protruding from the flat plate body separated at that time, the protrusion is from the hole except for the force pushing down the extension. It protrudes upward.

In the connector of this configuration, the coil spring constantly urges the flat plate body in the direction approaching the base portion. In other words, the protrusion is always urged in the direction of protruding upward from the hole. Therefore, the two scaffolding plates connected as described above cannot be pulled out due to the interference between the lower surface of the scaffolding plate and the protrusion of the connecting tool regardless of which one is to be pulled out from the connecting tool, and they are made to face each other. The state in which each end is positioned in the space inside the connector is maintained. That is, the ends of the two scaffolding plates can be firmly connected to each other by one connecting tool. Further, since the upper wall portion of the connecting tool exists above the end portion of the scaffolding plate, the scaffolding plate does not come off from the connecting tool even if an upward external force acts on the scaffolding plate, and the connected state is maintained. Be maintained.

Then, even after connecting a large number of scaffolding boards in the same manner, only one scaffolding board can be removed as follows. That is, by applying a pushing force to the extending portion, both of the pair of flat plates are separated from the base portion, and the protrusions protruding from both flat plates are immersed below the edges of the holes. .. In this way, the connecting tool is slid toward one of the two scaffolding plates after the protruding portion of the connecting tool does not interfere with the lower surface portion of the scaffolding plate. The scaffolding plate can be removed by sliding the connecting tools at both ends of the scaffolding plate to be removed to a position where the ends in the front-rear direction do not protrude beyond the ends of the scaffolding plate.

As described above, with the connecting tool of this configuration, the scaffolding plates can be connected without overlapping the ends of the scaffolding plates one above the other. Further, the connection is made by interference between the protrusion of the connector and the lower surface of the scaffold plate, and the connected state is maintained by the protrusion urged in the protrusion direction by the coil spring. That is, the work of fixing the connected state with some member such as a bolt is unnecessary, and the work of connecting is simple. In addition, even after connecting a large number of scaffolding boards, only some of the scaffolding boards can be removed by a simple operation.

The base portion of the connector is "flat plate-shaped", and the configuration in which the connector is separated and approaches the base portion from below is also a "flat plate body". Further, even when a "fixing plate portion" is provided below the flat plate body, the fixing plate portion is in the shape of a flat plate. Therefore, the passage formed by the connected scaffolding plates becomes flat without being affected by the connecting tool.

The scaffolding plate connector according to the present invention has, in addition to the above configuration,
It can be said that "each of the protrusions is inclined so as to gradually increase in height from the outside to the inside with respect to the base portion in the front-rear direction."

When the end of the scaffolding plate is pushed into the space inside the connector while the protrusion is protruding upward from the hole due to the urging of the coil spring, the lower surface of the scaffolding plate comes into contact with the protrusion. The protrusions of this configuration are inclined so that the height gradually increases in the approach direction of the scaffolding plate. Therefore, the force that causes the scaffolding plate to enter acts such that the lower surface portion of the scaffolding plate gradually pushes down the protrusion, and the flat plate body gradually separates from the base portion against the urging of the coil spring.

Then, when the scaffolding plate is further pushed forward, when the contact between the lower surface portion of the scaffolding plate and the protruding portion is lost, the protruding portion suddenly protrudes from the hole portion due to the urging of the coil spring.

Therefore, according to the connector of this configuration, the end portions of the scaffolding plate are connected without the work of manually pushing down the extension portion and removing the force of pushing down the lower surface portion at the timing when it exceeds the protrusion. Scaffolding boards can be connected with an extremely simple operation of simply pushing into the space inside the tool.

Next, the connecting structure of the scaffolding plate according to the present invention (hereinafter, may be simply referred to as "connecting structure") is
"The scaffolding board connecting tool described above has a scaffolding board connecting structure that connects the ends of adjacent scaffolding boards.
The scaffolding board
A scaffold forming a substantially U-shape in which a cross section cut in a direction orthogonal to the long axis direction opens downward by a rectangular top surface portion and a pair of side surface portions extending from each of the pair of long sides of the top surface portion. The board body and
At both ends of the scaffolding plate body, a rectangular covering portion, an upper surface portion extending from one of the pair of long sides of the covering portion, and a lower surface portion extending from the other of the pair of long sides of the covering portion The cross section cut in the major axis direction forms a substantially U-shape that opens in the major axis direction, the end portion of the scaffolding plate main body is covered with the covering portion, and the upper surface portion is overlapped with the top surface portion. At the same time, the lower surface portion includes a pair of end covers connecting the pair of side surface portions.
The adjacent scaffolding plates have their respective ends positioned between the pair of side walls of the scaffolding plate connector in a state where the covering portions face each other.
One of the pair of protrusions protrudes from the hole and interferes with the lower surface of one of the adjacent scaffolding plates, and the other of the pair of protrusions is the hole. It protrudes from the portion and interferes with the other lower surface portion of the adjacent scaffolding plate. "

This is a connecting structure in which general-purpose scaffolding plates having no structure for connecting at the ends are connected by the connecting tool having the above configuration.

The scaffolding plate connecting structure according to the present invention has the above configuration.
"The distance in the major axis direction between the pair of the protrusions is larger than twice the length of the lower surface portion in the major axis direction".

As described above, in the connecting structure of the present invention, the ends of the scaffolding plate are connected to each other by the interference between the protruding portion of the connecting tool and the lower surface portion of the scaffolding plate, but in this configuration, the pair of protruding portions The distance in the major axis direction, that is, the distance between the pair of protrusions separated in the front-rear direction in the connector, is larger than twice the length of the lower surface portion of the scaffold plate in the same direction. Therefore, in a state where the two scaffolding plates are connected by one connecting tool, a gap can be provided between the ends of the scaffolding plates (between the covering portions of the end cover).

Therefore, it is possible to incline the long axis direction of the other scaffolding board with respect to the long axis direction of one scaffolding board by the amount of the gap. As a result, the passage formed by the scaffolding plates serially connected in the series direction can be easily curved. This is a great advantage because it could not be realized by the conventional scaffolding plate that connects the convex portion and the concave portion of the end portion.

As described above, as an effect of the present invention, general-purpose scaffolding plates that do not have a structure for connection at the ends can be easily connected without overlapping the ends one above the other. It is possible to provide a scaffolding board connecting tool capable of removing only a part of the scaffolding board even after connecting the scaffolding boards of the above, and a scaffolding board connecting structure using the scaffolding board connecting tool.

Regarding the scaffolding plate connector according to the first embodiment of the present invention, (a) a perspective view in a state where the protrusion is protruding from the hole, and (b) a perspective view in a state where the protrusion is immersed in the hole. It is a figure. It is a bottom view of the scaffolding board connector of FIG. (A) is a side view of the state of FIG. 1 (a), and (b) is a side view of the state of FIG. 1 (b). (A) is a sectional view taken along line AA in FIG. 3 (a), and (b) is a sectional view taken along line BB in FIG. 3 (b). It is a figure explaining the connection of the scaffolding board by the scaffolding board connecting tool of FIG. 1 (a)-(c). FIG. 5D is a view for explaining the connection of the scaffolding plates by the scaffolding plate connecting tool of FIG. 1 and a cross-sectional view showing a structure in which the scaffolding plates are connected by the scaffolding plate connecting tool of FIG. .. It is a perspective view which shows the structure which connected the scaffolding board by the scaffolding board connecting tool of FIG. It is explanatory drawing of the work of removing a part of the connected scaffolding board. The scaffolding plate to be connected to the scaffolding plate connector of FIG. 1 is a perspective view of (a) an end portion viewed from above and (b) a perspective view of the end portion viewed from below. Regarding the scaffolding plate connector according to the second embodiment of the present invention, (a) a perspective view of a state in which the protrusion protrudes from the hole, and (b) a perspective view of the same state as viewed from below. Is. 10A and 10B are a cross-sectional view of the scaffolding plate connector of FIG. 10 in a state in which the protrusion is projected from the hole and a cross-sectional view in which the protrusion is immersed in the hole. (A) is a figure explaining the connection of the scaffolding board by the scaffolding board connecting tool of FIG. 10, and (b) is the cross-sectional view which shows the structure which connected the scaffolding board by the scaffolding board connecting tool of FIG. A perspective view of a scaffolding plate connector which is a modification of the first embodiment (a) a state in which a protrusion protrudes from the hole, and (b) a perspective view in a state where the protrusion is immersed in the hole. Is.

Hereinafter, the scaffolding plate connecting tool 1 (hereinafter, simply referred to as “connecting tool 1”), which is the first embodiment of the present invention, and the connecting structure using the connecting tool 1 will be described with reference to FIGS. 1 to 8. To do. First, the configuration of the connector 1 will be described.

The connector 1 includes a substantially rectangular and flat base portion 11, a pair of side wall portions 12 extending upward from each of the pair of side sides of the base portion 11, and a base portion 11 from the upper ends of each of the pair of side wall portions 12. The connecting tool main body 10 having the upper wall portion 13 extending upward of the above and the pair of side wall portions 12 are separated from each other in the front-rear direction orthogonal to the width direction and penetrated into the base portion 11. A pair of flat plates 20 that are separated from each other in the front-rear direction and extend in the width direction at positions corresponding to the pair of holes 15 below the base portion 11 and at least a pair of holes 15 And, in the extending portion 21 extending from both ends of each of the pair of flat plates 20 toward the connector main body 10, and the pair of side wall portions 12, at least the base portion coaxially with each of the extending portions 21. A pair of a slit 17 which is formed so as to penetrate up to 11 and through which the extension portion 21 is inserted, a coil spring 31 which urges the flat plate body 20 toward the base portion 11, and a pair directly under the hole portion 15. 25 is provided with protrusions 25 protruding from each of the flat plates 20 of the above.

In the connector 1 of the first embodiment, the extension portion 21 has a pin shape. The coil spring 31 is inserted through the extending portion 21 in the slit 17, is prevented from coming off from the slit 17, and is urging the flat plate body 20 through the extending portion 21.

More specifically, in the connector body 10, the pair of side wall portions 12 stand up at right angles to the base portion 11. Further, the upper wall portion 13 extends parallel to the base portion 11 from the upper ends of each of the pair of side wall portions 12. That is, the connector main body 10 has a U-shape that is opened inward by the base portion 11, the side wall portion 12, and the upper wall portion 13 on both end portions in the width direction.

Further, in the present embodiment, two pairs of holes 15 that are separated from each other in the front-rear direction are provided. One of the pair of holes 15 and one of the other pair of holes 15 are on the same line in the width direction, and one of the pair of flat plates 20 is directly below the two pairs. It extends in the width direction. Further, the other of the pair of hole portions 15 of the two pairs and the other of the other pair of hole portions 15 are also on the same line in the width direction, and directly below the pair of flat plate bodies 20. The other side extends in the width direction.

The slit 17 has a structure corresponding to the extending portion 21, and the extending portion 21 extends upward from both ends of each of the pair of flat plates 20. Therefore, the number of the extension portion 21 and the number of slits 17 per one connector is four. The slit 17 of the present embodiment penetrates from the base portion 11 to the upper end of the side wall portion 12, and the slit width from the base portion 11 to the intermediate position is narrower than the slit width above it. This narrow slit width is set to be slightly larger than the diameter of the pin-shaped extending portion 21.

The coil spring 31 is a compression spring, and is inserted by a vertical extension portion 21 in a slit 17 having a wide slit width. Since the diameter of the coil spring 31 is larger than the slit width of the narrow portion, the movement downward from the position where the slit width is changed is restricted. Further, the upper end of the coil spring 31 is fixed near the tip of the extending portion 21. As a result, the coil spring 31 is prevented from coming off upward from the slit 17. Here, the case where the upper end of the coil spring 31 is directly fixed to the vicinity of the tip of the extending portion 21 is illustrated by illustration, but the present invention is not limited to this. For example, by providing a recess in the circumferential direction near the tip of the extending portion 21 and fitting a stopper such as an E-shaped retaining ring into the recess, the coil spring 31 can be prevented from coming off from the slit 17 upward.

In the present embodiment, the ring 32 is inserted through the extending portion 21 below the coil spring 31 in the slit 17 having a wide slit width. The diameter of the ring 32 is larger than the slit width of the narrow portion. Due to the presence of the ring 32, the force that compresses the coil spring 31 acts evenly on the coil spring 31 when a force that pushes down the extending portion 21 acts. Further, the coil spring 31 is slightly compressed in a state where the flat plate body 20 is in contact with the base portion 11, and the extending portion 21 is moved upward in the slit 17 by a force trying to return to the original position. Always urging. That is, the coil spring 31 always exerts a force urging the flat plate body 20 in the direction toward the base portion 11.

Two protrusions 25 are provided on each of the pair of flat plates 20 corresponding to the holes 15. Each of the protrusions 25 is inclined so as to gradually increase in height from the outside to the inside with respect to the base portion 11 in the front-rear direction. In the present embodiment, the protrusion 25 is a right triangle in a side view, and the inner side in the front-rear direction is perpendicular to the base 11. The connector 1 has a configuration that is symmetrical with respect to the center line in the width direction and symmetrical with respect to the center line in the front-rear direction.

With the above configuration, when no external force is acting on the connector 1, the flat plate body is as shown in FIGS. 1 (a), 3 (a), and 4 (a) due to the urging of the coil spring 31. Reference numeral 20 is in contact with the base portion 11, and the protruding portion 25 projects upward from the base portion 11 through the hole portion 15. On the other hand, when a force that pushes down the extending portion 21 acts against the urging of the coil spring 31, as shown in FIGS. 1 (b), 3 (b), and 4 (b), The flat plate body 20 is separated from the base portion 11, and the protrusion 25 can be immersed below the edge of the hole 15. In this state, the coil spring 31 is compressed between the ring 32 whose lowering is restricted by the slit 17 in the narrow portion of the slit width and the tip of the extending portion 21, and the base portion is compressed by the force trying to return to the original position. A force urging in the direction toward 11 is greatly applied to the flat plate body 20.

The scaffolding plate 5 to be connected by the connecting tool 1 having the above configuration is a general-purpose scaffolding plate 5 having no structure for connection at the end portion, as shown in FIG. 9 near the end portion, and is a scaffolding plate main body. It has 50 and a pair of end covers 60 provided at both ends of the scaffolding plate main body 50. The scaffolding plate main body 50 has a rectangular top surface portion 51 and a pair of side surface portions 52 extending from each of the pair of long sides of the top surface portion 51 so that a cross section cut in a direction orthogonal to the long axis direction opens downward. It forms a U-shape. The end cover 60 is formed by a rectangular covering portion 62, an upper surface portion 61 extending from one of the pair of long sides of the covering portion 62, and a lower surface portion 63 extending from the other of the pair of long sides of the covering portion 62. The cross section of the scaffolding plate body 50 cut in the major axis direction has a substantially U-shape that opens inward in the major axis direction, and the covering portion 62 of the end cover 60 covers the end portion of the scaffolding plate main body 50. The upper surface portion 61 of the end cover 60 is overlapped with the top surface portion 51 of the scaffolding plate main body 50, and the pair of side surface portions 52 of the scaffolding plate main body 50 are connected by the lower surface portion 63 of the end cover 60.

In FIG. 9, the scaffolding plate main body 50 has a bottom surface portion 53 extending inward from the lower end of the side surface portion 52 in parallel with the top surface portion 51, and strength provided on the back surface of the top surface portion 51. An example shows a case where a rib 56 for reinforcing is further provided.

Next, the connection of the scaffolding plate 5 by the connecting tool 1 will be described mainly with reference to FIGS. 5 and 6. First, as shown in FIG. 5A, the inside of the connecting tool 1 in a state where no external force acts on the connecting tool 1 and the protrusion 25 protrudes upward from the hole 15 due to the urging of the coil spring 31. The end of one of the scaffolding plates 5 is made to enter the space. As the scaffolding plate 5 enters, the lower surface portion 63 of the scaffolding plate 5 comes into contact with the protrusion 25 as shown in FIG. 5B.

Since the protrusion 25 is inclined so as to gradually increase in height in the approach direction of the scaffold plate 5, a force that pushes down the protrusion 25 acts by the force that causes the scaffold plate 5 to enter. As a result, as shown in FIGS. 5B and 5C, the extension portion 21 and the flat plate body 20 are lowered while compressing the coil spring 31, the flat plate body 20 is separated from the base portion 11, and the scaffolding plate 5 is separated. Moves forward while gradually pushing down the protrusion 25 on the lower surface 63.

Then, by further pushing the scaffolding plate 5, as shown in FIG. 6D, when the lower surface portion 63 of the scaffolding plate 5 passes over the protrusion 25 and the contact between the two is lost, the coil spring is compressed. Due to the urging force that 31 tries to return to its original position, the extending portion 21 and the flat plate body 20 move upward at once, and the protruding portion 25 protrudes from the hole portion 15 at once accordingly. As a result, even if the scaffolding plate 5 is to be pulled out from the connecting tool 1, it cannot be pulled out due to the interference between the lower surface portion 63 of the scaffolding plate 5 and the protruding portion 25 of the connecting tool 1. That is, the protrusion 25 acts as a stopper for the movement of the scaffolding plate 5 in the pulling direction. In the present embodiment, since the inner side of the protrusion 25 is perpendicular to the base portion 11, the contact with the lower surface portion 63 is stable, and the protrusion portion 25 acts stably as a stopper.

Further, since the upper wall portion 13 of the connecting tool 1 exists above the end portion of the scaffolding plate 5, the scaffolding plate 5 is detached from the connecting tool 1 even if an external force upward is applied to the scaffolding plate 5. There is no such thing, and the connected state is maintained.

Similarly, by allowing the other scaffolding plate 5 to enter the internal space of the connecting tool 1 from the opposite side, as shown in FIG. 6E, the ends of the two scaffolding plates 5 become one. It is in a state of being connected by the connector 1. That is, the adjacent scaffolding plates 5 have their respective covering portions 62 facing each other, and their respective ends are positioned between the pair of side wall portions 12 in one connector 1, and two pairs. One of the paired protrusions 25 in each of the protrusions 25 protrudes from the hole 15 and interferes with the lower surface 63 of one of the adjacent scaffolding plates 5, and the other of the paired protrusions 25 A connecting structure of the scaffolding plate 5 protruding from the hole 15 and interfering with the other lower surface portion 63 of the adjacent scaffolding plate 5 is constructed.

In this way, in the state where the two scaffolding plates 5 are connected by the connecting tool 1, the other scaffolding plate 5 acts as a stopper for the movement of one scaffolding plate 5 toward the inside of the connecting tool 1. ..

Here, in the present embodiment, as shown in FIG. 6E, the distance L1 between the pair of protrusions 25 in the connector 1 is the length L2 in the major axis direction of the lower surface portion 63 of the scaffolding plate 5. It is set to be 1 cm to 3 cm larger than twice. As a result, a gap S of (L1-2 × L2) is generated between the ends of the connected scaffolding plates 5 (between the covering portions 62). As a result, it is possible to incline the long axis direction of the other scaffolding plate 5 with respect to the long axis direction of one scaffolding plate 5 by the amount of the gap S, and the scaffolding plates 5 are continuously provided in the series direction. The passage formed by can be curved.

Next, a method of removing a part of the scaffolding plates 5 after connecting a large number of scaffolding plates 5 to form a long passage will be described. First, a force in the pushing direction is applied to all the extending portions 21 of the connector 1 against the urging of the coil spring 31. As a result, both of the pair of flat plates 20 are separated from the base portion 11, and the protrusions 25 formed on both flat plates 20 can be immersed below the edges of the holes 15. In this way, the connecting tool 1 is slid toward one of the two scaffolding plates 5 after the protrusion 25 of the connecting tool 1 does not interfere with the lower surface portion 63 of the scaffolding plate 5. As shown in FIG. 8, the connecting tool 1 is slid to a position where the end portion in the front-rear direction does not protrude beyond the end portion of the scaffolding plate 5, and the other end portion of the scaffolding plate 5 to be removed is connected. The scaffolding plate 5 can be removed by sliding the tool 1 in the same manner.

As described above, the scaffolding plate 5 can be connected by the connecting tool 1 of the present embodiment without overlapping the ends of the scaffolding plates 5 vertically. Further, the connection is made by interference between the protrusion 25 of the connecting tool 1 and the lower surface 63 of the scaffolding plate 5, and the work of fixing the connecting state with a member such as a bolt is unnecessary, so that the connecting work is simple.

Further, since the protrusion 25 has an inclination in which the height gradually increases in the direction in which the scaffolding plate 5 is entered, the extension portion 21 is manually pushed down, and the lower surface portion 63 exerts the force on the protrusion 25. The scaffolding plate 5 can be connected by an extremely simple operation of pushing the end portion of the scaffolding plate 5 into the space inside the connecting tool 1 without requiring the work of removing the scaffolding plate 5 at the exceeding timing.

In addition, even after connecting a large number of scaffolding plates 5, some of the scaffolding plates 5 can be easily removed by simply sliding the connecting tool 1.

Further, the relationship between the distance L1 between the pair of protrusions 25 and the length L2 of the lower surface portion 63 of the scaffolding plate 5 so that a gap S is intentionally formed between the ends of the connected scaffolding plates 5. Is set, the scaffolding plate 5 can be slightly tilted in the long axis direction, and the passage formed by connecting the scaffolding plates 5 can be curved.

Next, with respect to the scaffolding plate connecting tool 2 (hereinafter, simply referred to as “connecting tool 2”) which is the second embodiment of the present invention and the connecting structure using the connecting tool 2, FIGS. 10 to 12 are used. explain. The same components as those of the connector 1 in the connector 2 are designated by the same reference numerals, and detailed description thereof will be omitted. The configuration of the connector 2 differs from the configuration of the connector 1 in the structure relating to the attachment of the coil spring that biases the flat plate body 20 toward the base portion 11. In the connecting tool 1, the coil spring 31 is inserted by the pin-shaped extending portion 21, whereas the connecting tool 2 is fixed to the connecting tool main body 10 so as to intersect the flat plate body 20 below the flat plate body 20. A flat plate-shaped fixed plate portion 40 is provided, and a coil spring 35 is interposed between the fixed plate portion 40 and the flat plate body 20.

Further, the extending portion 21 of the connecting tool 1 has a pin shape, but the extending portion 21b of the connecting tool 2 has a flat plate shape, and is formed by bending both ends of the flat plate material constituting the flat plate body 20 upward. Has been done. This is because, unlike the extension portion 21 of the connector 1, it is not necessary to insert the coil spring 35 through the extension portion 21b.

More specifically, the connector 2 includes a pair of fixing plate portions 40. Each of the fixing plate portions 40 has a shape in which both ends of an elongated flat plate member are bent upward in an inverted L shape, and the bent both ends are fixed to the lower surface of the base portion 11. Each fixing plate portion 40 extends in the front-rear direction and is orthogonal to the flat plate body 20. A pin 41 is projected upward from the fixed plate portion 40 at a position intersecting with the flat plate body 20, and the coil spring 35 is inserted through the pin 41. The upper end of the pin 41 faces the through hole portion 27 formed in the flat plate body 20. In the present embodiment, the pair of fixing plate portions 40 are located directly below the straight line connecting the two pairs of hole portions 15 that are separated in the front-rear direction and are separated from each other. On the other hand, two pins 41 and a coil spring 35 are provided so as to be located directly below each of the two paired holes. Further, the pin 41 penetrates the through hole portion 27 and further faces the hole portion 15, but has a height that does not protrude above the edge of the hole portion 15. The fixed plate portion 40 does not necessarily have to be directly below the hole portion 15, but the length of the pin 41 in that case is such that the flat plate body 20 is in contact with the base portion 11 and the flat plate body 20 is in contact with the base portion 11. The length is set so that it does not protrude from the top surface.

The coil spring 35 is prevented from coming off above the flat plate body 20. In the present embodiment, the hole through which the pin 41 penetrates has a diameter smaller than that of the coil spring 35 on the upper end side, so that the coil spring 35 is prevented from coming off. Specifically, in the present embodiment, the protrusion 25 is formed on one of the two surfaces formed by bending the flat plate into an L shape, and the support surface portion 26, which is the other surface, is on the upper surface of the flat plate body 20. It is superimposed. A through hole 28 is formed in the support surface portion 26 and communicates with the through hole 27. The through-hole portion 27 of the flat plate body 20 has a larger diameter than the coil spring 35, but the through-hole portion 28 of the support surface portion 26 has a smaller diameter than the coil spring 35. As a result, the coil spring 35 does not come out above the boundary between the flat plate body 20 and the support surface portion 26, and is in a state of being interposed between the flat plate body 20 and the fixed plate portion 40. The retaining of the coil spring 35 is not limited to such a configuration, and the through hole portion 27 may simply have a smaller diameter than the coil spring 35.

The coil spring 35 is a compression spring, and by being slightly compressed while the flat plate body 20 is in contact with the base portion 11, a force for urging the flat plate body 20 in the direction toward the base portion 11 is applied. It is always working. Then, when a force that pushes down the extending portion 21b acts against the urging of the coil spring 35, the flat plate body 20 descends so as to approach the fixed plate portion 40, so that the flat plate body 20 and the fixed plate portion The coil spring 35 is compressed between the coil spring 35 and the plate body 20, and the force that tries to return the coil spring 35 exerts a greater force on the flat plate body 20 in the direction toward the base portion 11.

When connecting the scaffolding plate 5 with the connecting tool 2, the end portion of the scaffolding plate 5 is made to enter the internal space of the connecting tool 2 as in the case of the connecting tool 1. Along with this, the protrusion 25 is pushed down by the contact of the scaffold plate 5 with the lower surface portion 63, and the coil spring 35 is attached to the fixing plate portion 40 as shown on the right side in FIGS. 11 (b) and 12 (a). The flat plate body 20 is separated from the base portion 11 while being compressed between them. With the further advancement of the scaffolding plate 5, when the lower surface portion 63 passes over the protrusion 25 and the contact between the two is lost, the compressed coil spring 35 is forced to return to its original position, and FIG. ), The flat plate body 20 rises at a stretch, and the protrusion 25 protrudes from the hole 15 at a stretch.

As a result, as shown in FIG. 12B, the adjacent scaffolding plates 5 face each other with the covering portions 62 facing each other, and the respective end portions thereof are paired with the side wall portions 12 in one connector 2. One of the paired protrusions 25 in each of the two pairs of protrusions 25 protrudes from the hole 15 and interferes with the lower surface portion 63 of one of the adjacent scaffolding plates 5. At the same time, the other side of the pair of protrusions 25 protrudes from the hole 15 and interferes with the other lower surface portion 63 of the adjacent scaffolding plate 5, that is, the connecting structure of the scaffolding plate 5, that is, the first embodiment. The same connecting structure as the structure in which the adjacent scaffolding plates 5 are connected by the connecting tool 1 is constructed.

Then, even after the above-mentioned connecting structure is constructed, a force in the direction of pushing down against the urging of the coil spring 35 is applied to all the extending portions 21b of the connecting tool 2 as in the case of the connecting tool 1. By doing so, the connecting tool 2 can be slid with respect to the scaffolding plate 5, and a part of the scaffolding plate 5 can be removed.

FIG. 11 is a cross-sectional view in which the connector 2 is cut in the width direction along a line passing through the centers of two pins 41 protruding from the same fixing plate portion 40, and FIG. 12 is a pair. It is sectional drawing which cut the connecting tool 2 and the scaffolding plate 5 in the front-rear direction along the line passing through the protrusion 25.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the above embodiments, and as shown below, various improvements are made without departing from the gist of the present invention. And the design can be changed.

For example, in the connecting tools 1 and 2, the case where two pairs of the holes 15 and the protrusions 25 are provided is illustrated, but the present invention is not limited to this. If there are a plurality of pairs of holes 15, it is easy to linearly connect the scaffolding plates 5, but even if the holes 15 and the protrusions 25 are paired, the distance between the pair of side wall portions 12 is the width of the scaffolding plate 5. If appropriate, the scaffolding plates 5 can be connected linearly, and even in that case, if a gap S is provided between the ends of the adjacent scaffolding plates 5 as described above, the scaffolding plates 5 are slightly curved. It is possible to connect the scaffolding plates 5 so as to do so.

Further, in the connecting tools 1 and 2, the case where the slit 17 penetrates from the base portion 11 to the upper end of the side wall portion 12 is illustrated, but if at least the base portion 11 is penetrated, the upper end of the slit 17 is the side wall portion. It may be in the middle of twelve. If the slit 17 penetrates to the upper end of the side wall portion 12, it is easy to push down the extending portions 21 and 21b in order to remove a part of the scaffolding plate 5 after constructing the connecting structure, but the slit 17 The operation is possible even if the upper end is at the mid-height of the side wall portion 12.

Further, as the first embodiment, the connector 1 using the compression spring as the coil spring 31 has been illustrated, but as a modification of the first embodiment, as shown in FIGS. 13 (a) and 13 (b), tension is applied. The spring can be a connector 1b used as a coil spring 31b. In the connector 1b, the upper end of the coil spring 31b, which is a tension spring, is fixed to the peripheral wall of the slit 17, and the lower end is fixed to the extension portion 21.

Specifically, the slit 17 has a slit width wider than the diameter of the pin-shaped extending portion 21 and the coil spring 31b over the entire length, and the slit width is further widened on the upper end side to form a step portion. On the other hand, the coil spring 31b has a large diameter portion at the upper end, and this large diameter portion is fixed to the step portion of the slit 17. On the other hand, the extending portion 21 has a stepped portion having a discontinuously large diameter at the lower end side, and the lower end of the coil spring 31b is fixed to this stepped portion. Here, the fixed position of the lower end of the coil spring 31b with respect to the extension portion 21 is the midway height in the slit 17 in a state where the flat plate body 20 is in contact with the base portion 11 as shown in FIG. 13 (a). is there. Further, in this state, the coil spring 31b is in a slightly stretched state. With such a configuration, the coil spring 31b is prevented from coming off from the slit 17, and a force for urging the flat plate body 20 in the direction toward the base portion 11 is always applied. When a force that pushes down the extension portion 21 acts, the lower end of the coil spring 31b descends together with the extension portion 21, but the upper end of the coil spring 31b is restricted from being lowered by fixing the slit 17 to the peripheral wall. The 31b is stretched, and the force that urges the plate body 20 in the direction toward the base portion 11 is greatly exerted on the flat plate body 20 by the force that tries to return to the original position.

When connecting the scaffolding plate 5 with the connecting tool 1b, the end portion of the scaffolding plate 5 is made to enter the internal space of the connecting tool 1b as in the case of the connecting tool 1. Along with this, the protrusion 25 is pushed down by the contact with the lower surface portion 63 of the scaffold plate 5, and as shown in FIG. 13B, the extension portion 21 and the flat plate body 20 are lowered while stretching the coil spring 31b. The flat plate body 20 is separated from the base portion 11. With the further advancement of the scaffolding plate 5, when the lower surface portion 63 passes over the protrusion 25 and the contact between the two is lost, the stretched coil spring 31b is forced to return to its original position, and the extension portion 21 And the flat plate body 20 rises at a stretch, and the protrusion 25 protrudes from the hole 15 at a stretch. That is, regardless of whether the coil spring through which the extension portion 21 is inserted is the coil spring 31 of the compression spring or the coil spring 31b of the tension spring, the flat plate body 20 can be urged in the direction toward the base portion 11. ..

1,1b, 2 connecting tool (scaffolding board connecting tool)
5 Scaffolding plate 10 Connector body 11 Base part 12 Side wall part 13 Upper wall part 15 Hole part 17 Slit 20 Flat plate body 21 and 21b Standing part 25 Protrusions 31, 31b, 35 Coil spring 40 Fixing plate part 50 Scaffolding board body 51 Top Face 52 Side 60 End cover 61 Top 62 Cover 63 Bottom L1 Long-axis distance between a pair of protrusions L2 Long-axis length of bottom

Claims (5)

A substantially rectangular and flat base portion, a pair of side wall portions extending upward from each of the pair of side sides of the base portion, and a pair of side wall portions extending upward from the upper ends of each of the side wall portions. The connecting tool body with the upper wall and
A pair of holes separated from each other in the front-rear direction orthogonal to the width direction in which the pair of side wall portions are separated, and at least a pair of holes penetrating the base portion.
Below the base portion, at positions corresponding to the pair of the hole portions, a pair of flat plates separated in the front-rear direction and extending in the width direction, respectively.
A vertical portion extending from both ends of each of the pair of flat plates toward the connector body, and
A slit formed in the pair of the side wall portions coaxially with each of the extending portions so as to penetrate at least to the base portion, and through which the extending portion is inserted.
A coil spring that urges the flat plate body toward the base portion, and
It protrudes from each of the pair of the flat plate bodies, and when the flat plate body approaches the base portion due to the urging of the coil spring, it protrudes upward from the base portion through the hole portion to urge the coil spring. It is provided with a protrusion that immerses below the edge of the hole when the flat plate is separated from the base.
The coil spring is characterized in that the pin-shaped extending portion is inserted through the slit, the plate body is prevented from coming off from the slit, and the flat plate body is urged through the extending portion. Scaffolding board connector. A substantially rectangular and flat base portion, a pair of side wall portions extending upward from each of the pair of side sides of the base portion, and a pair of side wall portions extending upward from the upper ends of each of the side wall portions. The connecting tool body with the upper wall and
A pair of holes separated from each other in the front-rear direction orthogonal to the width direction in which the pair of side wall portions are separated, and at least a pair of holes penetrating the base portion.
Below the base portion, at positions corresponding to the pair of the hole portions, a pair of flat plates separated in the front-rear direction and extending in the width direction, respectively.
A vertical portion extending from both ends of each of the pair of flat plates toward the connector body, and
In the pair of the side wall portions, a slit which is formed coaxially with each of the extending portions so as to penetrate at least to the base portion and through which the extending portion is inserted.
A coil spring that urges the flat plate body toward the base portion, and
It protrudes from each of the pair of the flat plate bodies, and when the flat plate body approaches the base portion due to the urging of the coil spring, it protrudes upward from the base portion through the hole portion to urge the coil spring. It is provided with a protrusion that immerses below the edge of the hole when the flat plate is separated from the base.
The coil spring is interposed between the flat plate-shaped fixing plate portion fixed to the connector main body so as to intersect the flat plate body below the flat plate body, and the flat plate body. A scaffolding board connector characterized by being urged. The first or second aspect of the invention, wherein each of the protrusions is inclined so as to gradually increase in height in the front-rear direction from the outside to the inside with respect to the base portion. Scaffolding board connector. The scaffolding plate connecting tool according to any one of claims 1 to 3, further comprising a scaffolding plate connecting structure for connecting the ends of adjacent scaffolding plates.
The scaffolding board
A scaffold forming a substantially U-shape in which a cross section cut in a direction orthogonal to the long axis direction opens downward by a rectangular top surface portion and a pair of side surface portions extending from each of the pair of long sides of the top surface portion. The board body and
At both ends of the scaffolding plate body, a rectangular covering portion, an upper surface portion extending from one of the pair of long sides of the covering portion, and a lower surface portion extending from the other of the pair of long sides of the covering portion The cross section cut in the major axis direction forms a substantially U-shape that opens in the major axis direction, the end portion of the scaffolding plate main body is covered with the covering portion, and the upper surface portion is overlapped with the top surface portion. At the same time, the lower surface portion includes a pair of end covers connecting the pair of side surface portions.
The adjacent scaffolding plates have their respective ends positioned between the pair of side walls of the scaffolding plate connector in a state where the covering portions face each other.
One of the pair of protrusions protrudes from the hole and interferes with the lower surface of one of the adjacent scaffolding plates, and the other of the pair of protrusions is the hole. A scaffolding plate connecting structure characterized in that it protrudes from a portion and interferes with the other lower surface portion of the adjacent scaffolding plate. The scaffolding plate connecting structure according to claim 4, wherein the distance in the major axis direction between the pair of the protrusions is larger than twice the length of the lower surface portion in the major axis direction.

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