JPH019592Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a stake for gateball.

As shown in FIG.
It exists as a glyph. To connect the shaft 1 and the stake head 2, as shown in Fig. 2, a shaft insertion hole 3 is formed in the stake head 2, the shaft 1 is inserted into the shaft insertion hole 3, and the two are glued together. As shown in FIG. 3, a shaft insertion hole 3 is formed in the stake head 2, a nut 4 is installed in the shaft insertion hole 3, and a threaded rod 5 is provided at the tip of the shaft 1. There is a conventional method of screwing the rod 5 into the nut 4.

However, since the former connection has a problem with the adhesive force between the shaft 1 and the stake head 2, the latter connection method is often adopted. by the way,
In the latter connection, since the threaded rod 5 that is screwed into the nut 4 protrudes from the tip of the shaft 1, the threaded rod 5 may be damaged during manufacturing, transportation, or sales at stores.
The screws are often damaged and cannot be screwed in.
In addition, since the shaft insertion hole 3 is a straight hole, a gap is created between it and the shaft 1, and the impact at the time of impact is concentrated at point A, which tends to cause rattling between the shaft insertion hole 3 and the shaft 2. There is a drawback. Furthermore, since the nut 4 is simply driven into the shaft insertion hole 3, the nut 4 may come off if the threaded rod 5 is screwed in too strongly, and there is a risk that the head 2 will fall off during play.

SUMMARY OF THE INVENTION The object of this invention is therefore to provide a stake for gateball that solves the above-mentioned drawbacks caused by the screw connection and allows a strong connection between the stake head and the shaft.

In order to eliminate the above drawbacks, this invention has a tapered shaft insertion hole in the stake head, a threaded rod insertion hole that communicates with this shaft insertion hole, and a head that fits into the end of this screw insertion hole. The end of the threaded rod that passes through the threaded rod insertion hole and projects into the shaft insertion hole is provided with a head that fits into the head fitting hole, and the shaft that connects to the stake head is provided with a head that fits into the head fitting hole. A tapered shaft portion that can be inserted into the shaft insertion hole is formed at the tip end, and a nut having a threaded protrusion on the outer periphery is screwed into the tip surface of the tapered shaft portion.
The nut is screwed into the threaded rod to connect the stake head and the shaft.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIG. 4, the stake according to this invention includes a stake head 10 and a stake head 10.
The shaft 20 is connected to the shaft 20, and the threaded rod 30 is connected to the shaft 20.

A shaft insertion hole 11, a threaded rod insertion hole 12, and a head fitting hole 13 are formed in the stake head 10 on a straight line intersecting the axis, and the shaft insertion hole 11 is a tapered hole. ing.

A tapered shaft portion 21 that can be inserted into the shaft insertion hole 11 is provided at the tip of the shaft 20,
A nut 22 is provided inside the tapered shaft portion 21. The nut 22 has a threaded protrusion 23 on its outer periphery, a female thread 24 on its inner periphery, and a wrench engaging hole 25 on its inner end. This nut 2
2 is attached to the shaft 20 by screwing into a blind hole formed in the distal end surface of the shaft 20.

Furthermore, a head 31 that fits into the head fitting hole 13 is provided at the end of the threaded rod 30. This threaded rod 30 is inserted into the threaded rod insertion hole 12 from the head fitting hole 13, and its head 31 is inserted into the head fitting hole 13.
When inserted into the shaft insertion hole 11, the tip end faces into the shaft insertion hole 11, and the nut 22 of the shaft 20 is screwed into the tip end.

Now, screw rod insertion hole 1 of stake head 10
Insert the threaded rod 30 into the shaft insertion hole 1.
When the tapered shaft part 21 of the shaft 20 is inserted into the shaft 20 and the nut 22 of the shaft 20 is screwed into the threaded rod 30, the tapered shaft part 21 is deeply fitted into the shaft insertion hole 11, and the stake head 10 and shaft 20 are
can be connected.

Note that when the nut 22 is screwed into the threaded rod 30 and tightened, when the threaded rod 30 rotates,
Since firm tightening cannot be performed, it is preferable to prevent the threaded rod 30 from rotating relative to the stake head 10.

In the illustrated embodiment, as shown in FIG. Although it is designed to engage with the recess 14, the means for preventing rotation is not limited to this, and for example, the head fitting hole 13 and the threaded rod head 31 may each have a rectangular shape.

As described above, this invention allows the shaft to be inserted into the threaded rod insertion hole of the stake head and prevented from moving in the axial direction by the engagement between the head fitting hole and the head. Since the nut is screwed into the inside of the shaft, the nut can be strongly tightened against the threaded rod, and by tightening the nut, the tapered shaft formed at the tip of the shaft can be tightened. Since it fits deeply into the shaft insertion hole, which is a tapered hole in the stake head, it is possible to firmly connect the stake head and the shaft.

In addition, since the entire outer periphery of the tapered shaft is in surface contact with the inner surface of the shaft insertion hole, the impact during impact can be received by the entire contact area between the two connecting parts, suppressing the occurrence of lateral vibration and rattling of the shaft. can be effective.

Furthermore, since the nut is provided inside the tip of the shaft, it is possible to eliminate the inconvenience of damaging the screw during manufacturing or transportation, which is the case with conventional stays in which a threaded rod is provided at the tip of the shaft.

[Brief explanation of the drawing]

Figure 1 is a front view of the gateball stake.
2 and 3 are cross-sectional views showing a conventional stake, FIG. 4 is a cross-sectional view showing an embodiment of the stay according to this invention, and FIG. 5 is a bottom view of the same. 10...Station head, 11...Shaft insertion hole, 12...Threaded rod insertion hole, 13...Head fitting hole, 20...Shaft, 21...Tapered shaft portion,
22...Nut, 23...Threaded projection, 24...Female thread, 30...Threaded rod, 31...Head.

Claims (1)

[Scope of utility model registration request] The shaft insertion hole formed in the stake head is made into a tapered hole, and a threaded rod insertion hole is provided in communication with the shaft insertion hole, and a head fitting hole is provided at the end of the threaded rod insertion hole. A head that fits into the head fitting hole is formed on the end of the threaded rod that penetrates through the shaft and projects into the shaft insertion hole, and the tip of the shaft that connects to the stake head is capable of being inserted into the shaft insertion hole. This stake for gateball is provided with a tapered shaft part, a nut having a threaded projection formed on the outer periphery is screwed into the inside from the tip surface of the tapered shaft part, and the nut is screwed into the threaded rod to connect the stake head and the shaft.