JPH0372790B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a joint structure for a crosspiece joint for civil engineering and construction.

Here, the civil engineering construction crosspiece joint is a crosspiece assembly formed by connecting at least one horizontal crosspiece and one vertical crosspiece at right angles or at an angle to each other, and is attached to the inside or outside of a building, Handrails that are installed around building sites, parks, playgrounds, factories, etc., or along roads, rivers, etc., such as window handrails, stair handrails, balcony handrails, bridge handrails, etc. This includes lattices such as window lattices, lattices, partition lattices, etc., fences such as partitions or protective fences for pastures, farms, flower beds, lawns, roads, rivers, ponds, lakes, etc., and fences for ditches outside buildings and fences.

(Prior art) In conventional civil engineering and construction beam joints that are assembled at the installation site, when joining the upper horizontal beam and the vertical beam and when joining the lower horizontal beam and the vertical beam, the upper horizontal beam, the lower horizontal beam, and the vertical beam are connected. The horizontal and vertical bars are connected by inserting rivets or screws into fixing holes drilled in the bars, or by welding.

However, at installation sites where work management is likely to be inadequate, riveting, screwing, and welding work at numerous joints by workers with poor technical proficiency is a problem in ensuring safe construction and joining. This is not preferable from the viewpoint of improving reliability of strength.

In the lattice joining device disclosed in Japanese Patent Application Laid-Open No. 58-62255, a pair of non-return pawls are provided on the inner surface of both side wall plate portions of the upper horizontal crosspiece, and a pair of non-return pawls are provided on the outer surface of both side wall plate portions of the vertical crosspiece. A locking groove is provided in the locking groove, and the non-return claw portion is elastically engaged with the locking groove, thereby joining the vertical beam and the upper horizontal beam.

Furthermore, in the Kasagi mounting structure disclosed in Japanese Utility Model Publication No. 56-40980, a pair of non-return pawls are provided protruding from the inner surfaces of both side wall panels of the Kasagi, and the installation is secured by bolting to the upper edge of the building frame. A pair of non-return claws are protruded from the metal fitting, and the caps are joined to the building frame by elastically engaging the non-return claws with each other.

With these methods, the only work required to join the upper horizontal beams at the installation site is the extremely simple process of elastically engaging the non-return claws, so the problems with regard to safety enforcement and reliability improvement mentioned above are not solved. It has been resolved.

However, in the method disclosed in JP-A-58-62255, locking grooves and escape slits must be cut one by one into the side wall plate portions of the vertical beams used in large numbers, and elastic locking is required. The pre-processing of the factory stairs up to the joining of the upper horizontal beams required considerable time and effort. Furthermore, it is necessary to drill a large number of vertical beam insertion holes in the lower plate portion of the upper horizontal beam in correspondence with the arrangement intervals of the vertical beams, which makes the pre-processing even more complicated.

In the method disclosed in Utility Model Publication No. 56-40980,
Anchor nuts must be embedded and fixed in the upper edge of the frame, and a number of mounting brackets must be tightened and secured using the bolts screwed into the anchor nuts, until the cap is joined by elastic engagement. It took a considerable amount of time and effort to install the front difference at the installation site.

(Problems to be Solved by the Invention) Therefore, an object of the present invention is to connect the upper horizontal beam and the vertical beam at the installation site simply by elastic engagement of the non-return claws of the upper horizontal beam and the vertical beam. To provide a crosspiece joint for civil engineering and construction, which is not only easy to perform, but also greatly simplifies pre-processing of upper horizontal crosspieces and vertical crosspieces at a factory stage.

(Means for Solving the Problems) The following will be explained using the reference numerals in the attached drawings. In the civil engineering construction crosspiece joint according to the first invention,
The pair of non-return claws 4a, 4a are connected to the upper horizontal beam mounting member 5a.
A through hole 9a is formed in the center of the flat plate part 9, and a pair of sawtooth plate parts 10, 10 inserted into the opening of the upper end 3a of the vertical bar are inserted into the flat plate part 9. Sawtooth protrusions 10a, 10 are provided on the outer surfaces of the sawtooth plate portions 10, 10 so as to protrude inwardly from the lower surface side.
Connecting plate part 11 with a protruding part and bent in a chevron shape at the center part
The lower end portions of the sawtooth plate portions 10, 10 are connected to each other by a V-shaped groove 11a on the upper surface side in the center of the connecting plate portion 11, and a recess is provided on the lower surface side of the root portions of both ends of the connecting plate portion 11. Grooves 11b, 11b are provided.

A pair of non-return claws 2a, 2a that elastically engage with the non-return claws 4a, 4a are provided protruding from the lower end of both side walls of the upper horizontal beam 1a, and the expansion operation is inserted through the through-hole 9a. An abutment surface 12a is provided at the tip of the push rod 12 to abut against the upper surface of the central portion of the connecting plate portion 11, and when the sawtooth plate portions 10, 10 are expanded, the sawtooth protrusion 10a
Band plate-shaped protrusions 3b, 3b, which are engaged with each other by biting, are provided protrudingly on the inner surfaces of both side wall plate portions of the upper end 3a of the vertical beam.

The check claw portion 2 of the upper horizontal bar 1a is placed on the upper surface side of the lower surface closing plate 7 disposed between the adjacent vertical bars 3, 3.
A band of non-return claws 8, 8 which are elastically engaged with a, 2a are provided protrudingly.

In the crosspiece joint for civil engineering and construction according to the second invention, a screw hole 9a is bored in the center of the flat plate part 9 of the upper horizontal crosspiece mounting member 5a instead of the through hole 9a, and a push rod 12 for expansion operation is provided. into the screw hole 9a. The other configurations are the same as the first invention.

In various concrete cross-section joints for civil engineering, the vertical beams are used as standers, supports, studs, etc. depending on the installation position and the size of the cross-section, and the horizontal beams are also used depending on the installation position and the size of the cross-section. It is used as a kasagi, horizontal frame, middle crosspiece, and lower crosspiece.

(Function) In the first invention, a pair of sawtooth plate parts 10, 10 of the upper horizontal bar mounting member 5a are inserted into the opening of the upper end 3a of the vertical bar 3 having a relatively large cross-sectional area and serving as a support.
As shown in FIG. 10, the expansion operation push rod 12 is inserted through the through hole 9a of the flat plate portion 9. By pushing this push rod 12 by hand or driving it with a hammer, the center bent portion of the connecting plate portion 11 is pushed down by the abutment surface 12a at the tip.

By this pressing operation, the serrated plate parts 10, 10 are expanded outward by plastic deformation as shown in FIG. When engaged, the upper horizontal beam mounting material 5a
is joined to the vertical beam 3.

When the sawtooth plate parts 10, 10 are fully expanded, the V-shaped groove 11a of the connecting plate part 11 is closed.
The connection between the upper horizontal bar mounting member 5a and the vertical bar 3 is performed in advance at the factory stage.

At the installation site, by pushing down the upper horizontal crosspiece 1a, which is used as a cap and has a relatively large vertical cross-sectional area, in the direction of the arrow in FIGS. 4a and the non-return claw portion 2a of the upper horizontal beam 1a are engaged. Non-return claw parts 2a, 4
Since the upper horizontal bar 1a is firmly engaged due to its inherent elasticity, the upper horizontal bar 1a is irremovably joined to the vertical bar 3 in the opposite direction.

7, 18, 21, and 22.
As shown in the figure, the lower surface closing plate 7 is fitted and joined by elastically engaging the non-return claws 8, 8 with the non-return claws 2a, 2a of the upper horizontal beam 1a.

The lower face closing plate 7 is used by cutting it into an appropriate length according to the installation interval of the vertical bars 3, 3, and after fitting it into the upper horizontal bar 1a, it is cut into the upper horizontal block along the non-return claw part 2a as necessary. It is slid in the length direction of the crosspiece 1a.

In the second invention, as shown in FIG.
Press down the central bent part of the connecting plate part 11 by a.

By this pressing operation, as shown in FIG. The upper horizontal bar mounting member 5a is joined to the vertical bar 3 by biting and engaging.

The connection between the upper horizontal bar mounting member 5a and the vertical bar 3 is performed in advance at the factory stage. Serrated plate part 10,1
Even after the 0 expansion, the push rod 12 is left in the screwed state with the screw hole 9a.

(Embodiment) In the embodiments shown in FIGS. 1 to 3, 7, and 9 to 11, fixing brackets 6 are installed at the factory stage on the lower side surfaces of the vertical beams 3 that serve as pillars. It is joined by a fixing device 14 such as a screw or an anchor rivet passing through the through hole 23 and the through hole 24, and the lower horizontal beam mounting material 5b is attached to the fixing bracket 6 by a similar fixing member 14 passing through the through hole 21 and the through hole 22. They are joined by a fixing member 14.

By pushing down the lower horizontal bar 1b in the direction of the arrows in FIGS. 1 and 2 at the installation site, the non-return claw part 4b of the lower horizontal bar mounting material 5b and the non-return claw part 2b of the lower horizontal bar 1b are removed. be elastically engaged.

The vertical beam 3 serving as a support is planted and fixed to a foundation 26 such as a concrete floor or a concrete wall 35.

In the embodiment shown in FIGS. 12 to 14, the expansion operation push rod 12 is bolt-shaped and has a hexagonal head 12b for rotation operation at the base end. The male screw portion that is screwed into the screw hole 9a is provided over the entire length from the abutment surface 12a to the head 12b.
A lower surface closing member having a non-return claw that engages with the non-return claw 2a can be fitted. Further, the cross-sectional shapes, dimensions, and materials of the upper horizontal bar 1a, the lower horizontal bar 1b, the upper horizontal bar mounting material 5a, the lower horizontal bar mounting material 5b, the lower surface blocking plate 7, and the vertical bar 3 are not particularly limited, and the non-return claw The shape and dimensions of the portion are not particularly limited.

When one member (upper and lower horizontal bars, upper and lower horizontal bar mounting materials, lower face blocking plate, vertical bar) is pressed against the other member, the non-return claw part on one member side can be used alone or on the other side. Together with the non-return claw on the member side, the non-return claw is elastically deformed in a direction that allows the mutual passage of the non-return claw, and when one non-return claw partially protrudes from the other non-return claw, the non-return claw One or both of them are elastically restored and engage with each other so that they cannot be pulled out in the opposite direction to the direction in which they were pressed.

As in the embodiments shown in FIGS. 18 to 22, the non-return pawl preferably has an inclined cam surface or a curved cam surface at its tip, and a flat shoulder surface following the inclined or curved cam surface. Or it has a shoulder surface or recess with a reverse slope. When the non-return claws engage each other in an intricate manner, the joint becomes even stronger.

In these embodiments, the left and right side walls 30, 31 of the upper horizontal bar 1a are formed as inwardly inclined walls with the distance between them decreasing toward the lower end, and the non-return claw portion of the upper horizontal bar mounting member 5a When 4a is pushed into the upper horizontal beam 1a, the left and right side walls 30, 31 are temporarily elastically deformed to open outward, and at the final stage of engagement, they are elastically restored diagonally again. Therefore, a more fully rigid elastic engagement is achieved. Lower horizontal bar 1
The left and right side walls 32 and 33 of b are formed as inwardly inclined walls for the same purpose.

The upper horizontal ends 1a, lower horizontal members 1b, and vertical members 3, which serve as pillars, are fitted with a unitized lattice according to the structure and purpose of the civil engineering and construction joints. The body 25 and the blindfold panel 26 are attached by fitting or the like. These units can also be joined to the horizontal or vertical beams by elastic engagement of the same non-return claws of the mounting frame members as described above. Further, the unit itself can be assembled by elastic engagement of the non-return claw.

In the embodiment shown in FIG. 15, a blind panel 25 made of plastic board or metal plate is attached to the frame member 29
In addition, the glass plate 27 is connected to the upper horizontal bar 1a, the lower horizontal bar 1b, and the vertical bars 3, 3 via the mounting frame material 28.
It is fitted and joined. In the embodiment shown in FIG. 16, the blind panel 25 made of plastic board or metal plate and the glass plate 27 are directly connected to
b. It is fitted and joined to the lower horizontal bar 1b and the vertical bars 3, 3. In the embodiment shown in FIG. 17, the vertical bars 3,
3 has its lower part buried and fixed to a concrete upright wall 35.

In the crosspiece joints for civil engineering and construction shown in FIGS. 4 to 6 and 8, the upper end 3a of the vertical crosspiece 3 serving as a support is
The base plate 16 has a U-shaped cross section at the factory.
are joined by fasteners 13 such as screws and anchor rivets passing through the through holes 18 and 20, and the upper horizontal beam mounting material 5b is attached to the base plate 16 by fastening tools passing through the through holes 17 and 19. 13.
A fixing bracket 6 is joined to the lower side surface of the vertical beam 3 at the factory stage by a fixing tool 14 such as a screw or an anchor rivet that passes through the through holes 23 and 24. Horizontal beam mounting material 5
b are joined by a fixing member 14 passing through the through holes 21 and 22.

By pushing down the upper horizontal bar 1a in the direction of the arrows in FIGS. 4 and 5 at the installation site, the non-return claw part 4a of the upper horizontal bar mounting material 5a and the non-return claw part 2a of the upper horizontal bar 1a are separated. engage elastically. Also, lower horizontal bar 1
By pushing down b in the direction of the arrow, the lower horizontal bar mounting member 5b, the non-return claw portion 4b, and the non-return claw portion 2b of the lower horizontal bar 1b are elastically engaged.

(Effects of the Invention) As described above, in the civil engineering construction crosspiece joint of the present invention, the upper horizontal crosspiece 1a and the vertical crosspiece 3 are provided with check claw portions 2a, 2a.
The non-return claws 4a, 4a on the side of the vertical bar 3 are attached to the flat plate part of the upper horizontal bar mounting member 5a. 9, and this upper horizontal bar mounting member 5a has a pair of sawtooth plate portions 1 on the upper end 3a of the vertical bar.
0 and 10, and then push down the center bent part of the connecting plate part 11 with the push rod 12 inserted through the through hole 9a of the flat plate part 9, and push the sawtooth protrusions 10a of the sawtooth plate parts 10, 10 expanded outwardly into the vertical crosspiece 3. Since it is joined to the vertical crosspiece 3 by biting and engaging with the strip plate-like projection 3b of The time and effort required for pre-processing for joining the horizontal beams can be significantly reduced.

Further, in the civil engineering and construction crosspiece joint of the present invention, the screw hole 9a of the flat plate part 9 of the upper horizontal crosspiece mounting member 5a is bored, and the expansion operation push rod 1 is screwed into the screw hole 9a.
2 are left in the screwed state even after the sawtooth plate parts 10, 10 are expanded, so that the return deformation of each sawtooth plate part 10 is completely prevented, and the biting engagement between the sawtooth protrusion 10a and the band plate-like protrusion 3b is prevented. To be firmly maintained, the upper horizontal rung 1
A and the vertical beam 3 can be more accurately joined easily.

Further, in the civil engineering construction crosspiece joint of the present invention, a lower surface closing plate 7 is provided in the lower surface opening of the upper horizontal crosspiece 1a between the adjacent vertical beams 3, 3, and the nonreturn claws 8, 8 and the nonreturn claws 2a, 2a.
The installation interval of the vertical bars 3, 3 can be changed arbitrarily by cutting the lower surface closing plate 7 to an appropriate length, so that the upper horizontal bars and The pre-processing of drilling holes for inserting vertical beams in the lower surface closing plate can be completely omitted, making it possible to reduce costs.

[Brief explanation of drawings]

1 to 3 show a jointed crosspiece for civil engineering and construction according to an embodiment of the present invention, and FIG. 1 is a longitudinal cross-section of the main part of the vertical crosspiece, upper horizontal crosspiece, and lower horizontal crosspiece before they are joined. 2 is a left side view showing the main parts in the same state, and FIG.
The figure is a plan view in the same state. Figures 4 to 6 show a crosspiece joint for civil engineering and construction in which the shape of the upper horizontal beam attachment material has been changed, and Figure 4 shows the main parts of the vertical beam, upper horizontal beam, and lower horizontal beam before they are joined. FIG. 5 is a left side view showing the main part in the same state in a longitudinal section, and FIG. 6 is a plan view in the same state. FIG. 7 is a perspective view of the upper horizontal beam portion of the civil engineering construction beam joint shown in FIGS. 1 to 3 before joining. FIG. 8 is a perspective view of the upper horizontal beam portion of the civil engineering construction beam joint shown in FIGS. 4 to 6 before joining. 9th
The figure is a perspective view of the lower horizontal beam portion of the civil engineering construction beam joint shown in FIGS. 1 to 3 before joining. FIG. 10 is a longitudinal cross-sectional view of the upper horizontal beam attachment material in the civil engineering and construction beam joint shown in FIGS. 1 to 3, and FIG. 11 is a vertical cross-sectional view of the upper horizontal beam attachment material in an expanded state. It is a diagram. FIG. 12 is a longitudinal sectional view of an upper horizontal beam attachment member in a civil engineering and construction beam joint according to another embodiment of the present invention, and FIG. 13 is a longitudinal sectional view of the upper horizontal beam attachment material in an expanded state. FIG. 14 is a vertical left side view of the main part of the civil engineering construction crosspiece joint after joining. FIG. 15 is a front view schematically showing the entire crosspiece joint for civil engineering and construction shown in FIGS. 1 to 3. FIG. 16 is a front view schematically showing the whole of a crosspiece joint for civil engineering and construction according to still another embodiment of the present invention. FIG. 17 is a front view schematically showing the whole of a crosspiece joint for civil engineering and construction according to still another embodiment of the present invention. FIG. 18 is an enlarged longitudinal cross-sectional view of a portion of the civil engineering construction crosspiece joint shown in FIGS. 1 to 3, where the vertical beams of the upper horizontal beam are not joined. FIG. 19 is an enlarged vertical sectional view of the joint portion between the upper horizontal beam and the upper horizontal beam attachment material in the civil engineering construction crosspiece joint shown in FIGS. 1 to 3. FIG. FIG. 20 is an enlarged vertical cross-sectional view of a joint portion between an upper horizontal beam and an upper horizontal beam attachment member in a civil engineering construction crosspiece joint according to another embodiment of the present invention. FIG. 21 is an enlarged longitudinal sectional view of an upper horizontal beam in a civil engineering construction beam joint according to still another embodiment of the present invention. FIG. 22 is an enlarged vertical cross-sectional view of an upper horizontal beam in a civil engineering construction beam joint according to still another embodiment of the present invention. 1a... Upper horizontal bar, 1b... Lower horizontal bar, 2a...
... Non-return claw portion, 2b... Non-return claw portion, 4a... Non-return claw portion, 4b... Non-return claw portion, 7... Lower surface closing plate, 8...
... Non-return claw portion, 3... Vertical bar, 5a... Upper horizontal bar mounting material, 5b... Lower horizontal bar mounting material, 6... Fixing bracket, 9... Flat plate part of upper horizontal bar mounting material, 10 …
...Sawtooth plate part, 11...Connection plate part, 12...Push rod for expansion operation, 13...Fixing tool, 14...Fixing tool.

Claims (1)

[Scope of Claims] 1. A pair of non-return claws 4a, 4a are provided protruding from the upper surface side of the flat plate part 9 of the upper horizontal bar mounting member 5a, and a through hole 9a is bored in the center of the flat plate part 9. , a pair of sawtooth plate parts 10, 10 inserted into the opening of the upper end 3a of the vertical bar are provided on the lower surface of the flat plate part 9 so as to incline inwardly, and a sawtooth protrusion is provided on the outer surface of the sawtooth plate parts 10, 10. 10a,
10a is provided protrudingly, and the lower end portions of the sawtooth plate portions 10, 10 are connected to each other by a connecting plate portion 11 bent in a chevron shape at the center, and a V is formed on the upper surface side of the central portion of the connecting plate portion 11.
A pair of non-return claw portions 2 are provided with a groove 11a and grooves 11b, 11b are provided on the lower surface side of the root portions of both ends of the connecting plate portion 11, and are elastically engaged with the non-return claw portions 4a, 4a.
a, 2a are provided protrudingly from the lower ends of both side walls of the upper horizontal beam 1a, and the tip of the expansion operation push rod 12 inserted from the through hole 9a comes into contact with the upper surface of the center part of the connecting plate part 11. A contact surface 12a is provided, and the sawtooth plate portion 1
The band plate-like protrusions 3b, 3b with which the sawtooth protrusions 10a bite and engage when the 0 and 10 are expanded are attached to the upper end 3a of the vertical bar.
Protruding from the inner surface of the wall plate portions on both sides, adjacent vertical bars 3,
A pair of non-return claws 8, 8 which are elastically engaged with the non-return claws 2a, 2a of the upper horizontal beam 1a are protrudingly provided on the upper surface side of the lower surface closing plate 7 disposed between the upper horizontal beam 1a. Crosspiece joints for civil engineering and construction. 2. A pair of non-return claws 4a, 4a are provided protruding from the upper surface side of the flat plate part 9 of the upper horizontal bar mounting member 5a, a screw hole 9a is bored in the center of the flat plate part 9, and a screw hole 9a is bored in the center of the flat plate part 9, and A pair of sawtooth plate parts 10, 10 to be inserted into the opening are provided on the lower surface side of the flat plate part 9 so as to project inwardly,
A sawtooth protrusion 10 is provided on the outer surface of the sawtooth plate portions 10, 10.
a, 10a are provided protrudingly, and the lower ends of the sawtooth plate parts 10, 10 are connected to each other by a connecting plate part 11 bent in a chevron shape at the center, and a V is formed on the upper surface side of the central part of the connecting plate part 11. A groove 11a is provided, and concave grooves 11b, 11b are provided on the lower surface side of the root portions of both ends of the connecting plate portion 11, and a pair of non-return claws 2a, 2a that elastically engage with the non-return claws 4a, 4a are provided on the upper side. An abutment surface 12a is provided at the tip of an expansion operation push rod 12 that protrudes from the lower ends of both side walls of the horizontal beam 1a and is screwed into the screw hole 9a, and that abuts against the upper surface of the center portion of the connecting plate portion 11; When the sawtooth plate parts 10, 10 are expanded, the sawtooth protrusion 10a bites into and engages the band plate-like protrusions 3b, 3b at the upper end of the vertical bar 3.
The non-return claws 2a, 2a of the upper horizontal bar 1a are elastically provided on the upper surface side of the lower surface blocking plate 7, which protrudes from the inner surface of both side wall plate portions of the upper horizontal bar 1a and is arranged between the adjacent vertical bars 3, 3. A crosspiece joint for civil engineering and construction, characterized in that a pair of non-return claws 8, 8 that engage are provided in a protruding manner.