JPS5916054Y2 - folding knife - Google Patents

Description

[Detailed description of the invention] This invention relates to a folding knife, and its purpose is to create a folding knife that can be easily and reliably locked in an open or closed position simply by rotating the stopper. It is about providing.

An embodiment embodying the present invention will be described below with reference to FIGS.
A storage groove 2 is formed on the ventral side over the entire length direction.

Reference numeral 3 denotes a mounting part formed by slightly reducing the diameter of the front end of the handle 1 through a stepped part 4 to form a cylindrical shape, and a cylindrical base 5 is crowned on the outer periphery of the mounting part 3.

Reference numeral 6 denotes an incision made by cutting out a part of the base 5 over the entire front and back direction, and corresponds to the storage groove 2 of the handle 1.

Reference numeral 7 denotes a knife body whose base end is inserted into the front end of the storage groove 2 of the handle 1, and is supported so as to be foldable into the storage groove 2 by a support shaft 8 passing through the mounting portion 3 of the handle 1 and the base 5. ing.

7a is the ventral base end of the body 7, which has a slightly pointed shape toward the rear.

Both ends 9 of the support shaft 8 slightly protrude above the surface of the base 5, as shown in FIG.

Reference numeral 10 denotes a substantially cylindrical stopper rotatably mounted on the outer periphery of the base 5, and its rear edge engages with the stepped portion 4 of the handle 1.

Guide grooves 11 are formed on the circumferential surface of the stopper 10 at portions corresponding to both ends 9 of the support shaft 8, and extend over the entire circumference of the stopper 10.

The guide groove 11 restricts the back and forth movement of the stopper 10 when it rotates by engaging with both ends 9 of the support shaft 8.

Reference numeral 12 denotes an incision made by cutting out a portion of the stopper 10 over the entire front and rear direction, and is adapted to correspond to the storage groove 2 of the handle 1 and the incision 6 of the base 5.

A pair of tapered portions 13 are formed on the front edge of the stopper 10, and are located on both sides of the cutout portion 12.

Reference numeral 14 denotes a triangular locking recess formed in one of the tapered portions 13, into which the ventral base end 7a of the body 7 can be inserted.

When opening the body 7 with the folding knife configured as described above, the stopper 10 is rotated on the base 5 of the handle 1 as shown in FIG. In this state, the body 7 is raised outward from the inside of the storage groove 2.

When the body 7 is raised up, both the incisions 6 of the cap 5 and the stopper 10,
12 and protrudes forward of the handle 1.

In the protruding state, the ventral base end 7a of the body 7 is located within the front end of the storage groove 2, as shown in FIG.

When the stopper 10 is rotated counterclockwise (or clockwise) in this state, the ventral base of the body 7 is inserted into the locking recess 14 of one tapered portion 13 on the front edge of the stopper 10, as shown in FIG. The end portion 7a is engaged.

In this case, the rear edge of the stopper 10 is locked to the stepped portion 4 of the handle 1, so that the stopper 10 will not be pushed back.

Further, when the stopper 10 is rotated, both ends 9 of the support shaft 8 are engaged with the guide grooves 11 of the stopper 10 and slide therein.

When the stopper 10 is locked to the body 7 in this way, the body 7 becomes impossible to fold and is locked in the open state.
At the same time, the stopper 10 also becomes unrotatable.

Therefore, the body 7 does not bend naturally. When folding the body 7, rotate the stopper 10 in the opposite direction to the above so that the incision 12 corresponds to the storage groove 2 of the handle 1 (Fig. 2), and fold the body 7 in this state. good.

At this time, since the ventral base end 7a of the body 7 is engaged with the locking recess 14, the stopper 10 is rotated somewhat strongly.

In addition, after folding the body 7, as shown in FIG. 5, rotate the stopper 10 again so that the cutout 12 comes to a position that does not correspond to the storage groove 2 of the handle 1. If you do this, Since the rear end edge of the stopper 10 is engaged with the rear base end 7b of the closed body 7, the body 7 does not open naturally.

The tapered part 13 and the locking recess 14 of the stopper 10 can also be formed at the rear end edge of the stopper 10, as shown in FIG. Since the locking recess 14 of the tapered portion 13 can be engaged with the portion 7b, the body 7 can be reliably locked even in the closed state.

Further, the tapered portion 13 may be formed on both the front and rear edges of the stopper 10.

In addition to the stopper 10, a spring such as a back plate acting on the body 7 may be used in combination in order to lock the body 7 in the open or closed state in the above embodiment.

Further, on the outer peripheral surface of the stopper 10, an uneven surface such as a knurling or the like is provided to prevent the finger from slipping when the stopper 10 is rotated by placing the finger on the stopper 10, or as shown in FIG. One or more finger hooks 17 may be formed by partially protruding the guide groove 11 of the stopper 10 outward.

As described in detail above, the present invention has the effect of being able to easily and reliably lock the knife in the open or closed state simply by rotating the stopper, so it is a practically preferred design for a folding knife.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of a folding knife embodying the present invention, Fig. 2 is a partial sectional view showing the folding knife in its open state, Fig. 3 is a bottom view, and Fig. 4 Figure 5 is a partial bottom view showing the body opened and locked, Figure 5 is a partial bottom view showing the body closed and locked, Figure 6 is another example in which a tapered part is provided on the rear edge of the stopper. Partial bottom view showing
FIG. 7 is a sectional view showing another example in which the stopper is provided with a finger rest.

Claims (1)

[Claims for Utility Model Registration] 1. The base end of the body 70 is rotatably mounted on a shaft 8 to the front end of the handle 1, and the body 70 is attached to the outer periphery of the front end of the handle 1 so that the body 7 can be opened and closed. 7, and by rotating the incision 12 to a position that does not correspond to the proximal end of the body 7 when the body 7 is open or closed, the end portion A cylindrical suit capable of regulating the opening and closing of the body 7 by engaging with the proximal end of the body 7, rotatably covering the stopper 10, and an end portion of the stopper 10. A tapered part 13 is formed in the part that engages with the proximal end of the inner piece 7 to facilitate its retention, and the proximal end of the inner piece 70 is further engaged in a part of the tapered part 13. A folding knife characterized by being provided with a locking recess 14 for use. 2. Utility model registration claim 1, characterized in that a cap 5 is attached to the front end of the handle 1, which is inscribed in the stopper 10 and through which both ends of a shaft 8 that supports the body 7 can be inserted. folding knife.