JPH0135868Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a wood joint for connecting wood pieces in the length direction, which is used when constructing concrete formwork. This invention relates to a Saki joint equipped with a plurality of driving claws that protrude from the top.

This type of conventional Saki joint has a plurality of driving nails that are integrally connected outwardly from both left and right edges of a band-shaped metal plate and are bent at right angles to the same side. They were arranged to face each other in the width direction of the metal plate. Such conventional wood joints require a metal plate that is wider than the width of the joint so that driving claws can be installed on both the left and right sides, which also has the disadvantage of high material costs.

The present invention provides a wooden joint that can solve these problems, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

In FIGS. 1 to 3, reference numerals 1 and 2 are the wooden joints of the present invention, and four driving claws 4a to 4h are provided at both lengthwise ends of a strip metal plate 3, respectively. . Further, ribs 5a and 5b are formed over the entire length on both left and right sides of the band-shaped metal plate 3, and are curved in a direction opposite to the protruding side of the driving claws 4a to 4h.

Each of the driving claws 4a to 4h is attached to the belt-shaped metal plate 3.
The ribs 5a and 5b are arranged in a staggered manner without facing each other in the width direction, and are formed by cutting out and bending between the ribs 5a and 5b. Further, each of the driving claws 4a to 4h is formed in the shape of an arrow, and is provided with a stopper step 6 on both side edges near the tip thereof, and the base portion is continuous with the inner side of the ribs 5a and 5b. Reference numeral 7 indicates a cutout hole formed by the bending marks of each of the driving claws 4a to 4h. As shown in FIG. 4, the cutout hole 7 has a portion 7a corresponding to the pointed end 8 including the stopper step 6 of the driving nails 4a to 4h, and a cutout space 9 is formed between the cutout hole 7 and the pointed end 8. It is formed to be wide.

Saki joints 1 and 2 configured as above
As shown in FIGS. 1 and 2, the nails 4a to 4h are driven in from both sides between two pieces of wood 10 and 11 whose ends are butted against each other. Both sides of trees 10 and 11 1
It is possible to connect both the wooden blocks 10 and 11 so that 0a, 11a and 10b, 11b are flush with each other.
At this time, since the driving pawls 4a to 4h of each Saki joint 1 and 2 are arranged in a staggered manner, the second
As shown in the figure, the driving pawls 4a to 4h of each joint 1, 2 can be used without shifting the positions of the joints 1, 2 that sandwich the wooden blocks 10, 11 from each other in the length direction.
The points do not face each other, and there is a discrepancy in the width direction.

In addition, when hitting the joints 1 and 2 with a hammer, it is desirable to hit the upper ends of each of the driving claws 4a to 4h directly downward, but especially to the upper ends of each of the driving claws 4a to 4h.
Even if you do not hit the upper end of 4h, rib 5
The presence of a and 5b allows the hammer to hit the rib 5.
There is a very high possibility that you will hit a or 5b. Therefore, the striking force of the hammer is likely to act almost directly downward on each of the driving claws 4a to 4h via the ribs 5a and 5b, and the driving claws 4a to 4h are driven perpendicularly to the wooden blocks 10 and 11 without bending. It is easy to do.

Furthermore, since it is not possible to hammer the entire surfaces of joints 1 and 2 at the same time, the driving claws at either end, for example 4a to 4d, are driven to some extent first, and then the other driving claws 4e to 4h are driven in.
However, at this time, there is a high possibility that the previously driven nails 4a to 4d will come off due to reaction. However, since each of the driving nails 4a to 4h is provided with a stopper step 6 on the side edge near the tip, the driving nail driven in first will not come off due to reaction.

FIG. 5 shows an example in which the tip portions 8 of the driving pawls 4a to 4h are further pressed in the thickness direction to form a knife edge shape. By processing in this way, driving the driving nails 4a to 4h can be made easier, but as shown in FIG.
When a cutting space 9 is provided between the arrow-shaped point 8 including the stepped portion 6, not only can the cutting space 9 be easily cut out at the point 8 without putting strain on the cutting blade, but also It is also possible to further press the pointed end 8 to form a knife edge without any difficulty.

Note that the number of driving nails is not limited. Furthermore, the driving claws can be arranged over the entire length of the band-shaped metal plate 3.

The Saki joint of the present invention can be implemented as described above, and its feature is that the Saki joint is provided with a plurality of driving claws protruding on the same side at least at both ends of the band-shaped metal plate. The driving nail is formed by cutting out and bending from the inside of the band-shaped metal plate, and the portion of the driving nail cutting hole corresponding to the driving nail tip is configured to be wide so as to form a resection space. It is in.

According to the configuration of the present invention, it is possible to form the belt-shaped metal plate with almost the same width as the width of the joint with almost no material loss. It can be manufactured at a lower cost compared to joints with Moreover, the driving nail can be given a sufficient length close to the width of the joint, and a joint with high connection strength can be obtained.

Furthermore, as explained earlier, even when the pointed end is formed in the shape of an arrow as shown in the figure, it is not only possible to easily cut out the pointed end without putting strain on the cutting blade; Furthermore, there is an advantage that the knife edge can be easily formed by pressing.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the state in use, Figure 2 is a vertical side view of the joint, Figure 3 is a front view of the joint in vertical cross section, and Figure 4 is a plan view of the main parts showing the state before bending the driving claw. , FIG. 5 is a longitudinal sectional front view of the main part showing a modification. 1, 2... Joint of the present invention, 3... Band-shaped metal plate, 4a to 4h... Driving claw, 5a, 5b...
Rib, 6... step for preventing falling off, 7... cutout hole, 8
...Apex, 9...Resection space, 10, 11...Shogi.

Claims (1)

[Scope of utility model registration request] A Saki joint having a plurality of driving claws protruding on the same side from at least both ends of a band-shaped metal plate, the driving claws being cut out and bent from inside the band-shaped metal plate, A Saki joint characterized in that the part of the nail cutting hole corresponding to the driving nail tip is configured to be wide so as to form a cutting space.