JPS6013429Y2 - key holder - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a shackle-type key chain.

Shackles that are widely used in industry require tools to open and close, so the rod metal fitting can be strongly screwed into the U-shaped metal fitting to prevent the rod metal fitting from being removed unnecessarily during use.

However, in the case of key holders, it is difficult to use tools to open and close them, so the threaded joint loosens during use and the rod fitting easily comes off. The purpose is to prevent the rod metal fitting from coming off during use, even when not in use.

This invention is based on a shackle-type key holder consisting of a U-shaped metal fitting and a rod metal fitting, in which a sliding member is fitted into the rod metal fitting on the side opposite to the male thread so as to be slidable and non-rotatable. An unevenness is provided on the surface of the sliding member on the male thread side, and the sliding member is pressed toward the center of the rod by springing.

On the other hand, a portion of the U-shaped fitting around the rod fitting insertion hole facing the sliding member is provided with projections and depressions that engage with the projections and depressions of the sliding member.

Thus, when closing the key chain, by pinching the sliding member with your fingertips and rotating it, the rod fitting compresses the spring and the tip is deeply screwed into the screw hole at the end of the U-shaped fitting, and in this state it slides. When the member is released, the recesses and recesses on both sides engage with each other due to the elasticity of the raised mat, and the sliding member cannot be rotated unnecessarily.

Therefore, loosening of the screw connection due to impact or the like can be prevented.

When opening the ring, if you pull the sliding member against the spring, the unevenness on both sides will be separated, allowing the sliding member to rotate freely, and the rotational movement will loosen the screw connection. become.

Moreover, since the above-mentioned springs and sliding members are covered with a cover, the appearance is elegant.

Examples of the drawings will be described below.

Reference numeral 1 denotes a U-shaped metal fitting, in which a through hole 2 is bored at one end, a screw hole 3 is formed at the other end, and a through hole 4 is formed in the center, into which a ring metal fitting 5 can be freely rotated. It is caulked.

6 is a rod metal fitting, which is in the shape of a round bar with a diameter that can be inserted into the through hole 2.
．． A male thread 7 is provided at one end, and a prismatic portion 8 is formed at the other end as shown in FIGS. 2 and 3.

The square column part 8 has a square hole 9b bored in the bottom part 9a of the sliding member 9.
It is loosely fitted.

A spring 11 is interposed in a compressed state between the washer 10 caulked to the tip of the prismatic portion 8 and the bottom portion 9a of the sliding member.
The spring 11 presses the sliding member 9 toward the center of the rod 6.

The sliding member 9 has a cylindrical wall 9C that extends around the bottom 9a and surrounds the spring 11 and the washer 10. A cover 12 having a knurling around the cylindrical wall 9C is tightly fitted into the cylindrical wall 9C.

Two protrusions 1 are provided on the outer surface of the sliding member bottom 9a symmetrically with respect to the axis.
3.13 is installed protrudingly.

At the peripheral edge of the through hole 2 of the U-shaped fitting 1 facing this, a shallow counterbore 14 capable of receiving the sliding member bottom 9a is formed, and the bottom of the counterbore 14 has six radial grooves 15, 15.・
... is formed.

The side wall shapes of the grooves 15, 15... are as shown in FIG.
A slope 15a is formed so that the protrusion 13.13 does not get caught when the male screw 7 is screwed into the screw hole 3.

In the above-mentioned key holder, when closing the ring, the cover 12 is pinched and rotated with the tips of the fingers, and the male thread 7 is screwed into the screw hole 3.

In that case, even after the protrusion 13 reaches the bottom of the counterbore 14,
The screw can be screwed in even deeper.

That is, as shown in FIG. 4, when the ring is closed, the protrusion 13 moves in the direction of the thumb mark 16, but since the side walls of the grooves 15, 15... are formed into slopes 15a, the spring 11 is compressed each time. while moving along the slope 15a and moving into the adjacent groove.

When screwed in sufficiently deeply in this manner, the rod fitting 6 is restrained from rotating in the opposite direction by the engagement between the protrusion 13 and the groove 15, so that the screwing does not loosen even if an impact or the like is applied.

When opening the ring, if the cover 12 is pulled in the direction of the arrow 17 as shown in Fig. 3, the protrusions 13, 13 will separate from the springs 11 without compressing them, so there will be no problem in this state. The rod metal fitting 6 can be rotated to unscrew it.

Note that one side wall of the grooves 15, 15, . . . does not necessarily have to be the slope 15a, 15a, .

In that case, after screwing in until the protrusion 13 reaches the bottom of the counterbore 14 at the far end, the cover 12 may be continued to be rotated while being pulled in the direction of the arrow 17.

As described above, according to this invention, it is possible to easily open and close the shackle-type key chain with the tip of a finger, and, despite this, it is possible to effectively prevent the thread from loosening and unnecessarily opening the ring at an undesired time. It is possible and the outer ring is graceful.

[Brief explanation of the drawing]

The figures show an embodiment of this invention, and Fig. 1 is a partial longitudinal sectional view;
Figure 2 is an enlarged sectional view of the sliding member in the closed ring state;
FIG. 3 is an enlarged cross-sectional view of the sliding member portion when performing a ring opening operation, and FIG. 4 is a developed view showing the engagement of the sliding member and the U-shaped fitting in the ring-closing state. 1...U-shaped metal fitting, 2...Through hole, 3...
...Screw hole, 6...Rod metal fitting, 7...
・Male thread, tail...Prismatic portion, 9...Sliding member, 9b...Square hole, 10...Washer, 1
1...Spring, 12...Cover 13.
... protrusion, 15 ... groove.

Claims (1)

[Scope of utility model registration request] A through hole is bored at one end of the U-shaped metal fitting, and a screw hole is bored at the other end, and unevenness is formed around the outer edge of the through hole, and the rod metal fitting is thick enough to be inserted into the through hole. A male thread is provided at one end to be screwed into the screw hole, and a prismatic portion is formed at the other end, and a sliding member having a square hole having substantially the same cross section as the prismatic portion is slidably fitted into the prismatic portion. , a spring is sandwiched between a washer fixed to the tip of the prismatic portion and the sliding member, a cover surrounding the washer and the spring is fixed over the sliding member, and the outer surface of the sliding member is fixed. A key holder formed with an uneven surface that engages with the above-mentioned U-shaped metal fitting.