JPH0747096Y2 - Cutlery - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) This invention is equipped with a locking mechanism to prevent the body from accidentally slipping out of the sheath, and the locking by the locking mechanism can be released by a simple operation. It is related to knives and other cutlery.

(Problems to be Solved by the Prior Art and Invention) Generally, from the viewpoint of safety in use, it is desired that the blade has a structure that prevents the body from accidentally coming out when the body is housed in a sheath. Therefore, various sheaths equipped with a locking mechanism that prevent the body from coming out easily have been proposed.
All of them had complicated structures, or the operation of locking and releasing them was troublesome.

The present invention has been devised to solve the above-mentioned problems, and despite having a simple structure, the locking mechanism works reliably only by putting one's body in the sheath, and the unlocking is easy. It is an object of the present invention to provide a blade that can be operated and is easy to handle.

(Means for Solving the Problems) The blade according to the present invention has the following configuration to achieve the above object. That is, the side plate of the sheath is provided with a notch, and a fulcrum part is provided in the middle part, and an elastic flexible piece connected to the side plate through the fulcrum part is formed. The elastic flexible piece on one side is a pressing piece and the elastic flexible piece on the other side is a locking piece with the fulcrum portion as a boundary. The lock piece and the body of the blade or the handle or the vicinity of the mouth of the handle are engaged with each other by pushing the body of the blade into the sheath so as to bend the lock piece outward. Provide a male part or female part. The engagement between the male portion and the female portion is such that the locking piece can be released by bending the locking piece outward by pressing the pressing piece inward of the sheath.

(Action) When the body of the blade is pushed into the sheath, the lock piece and the male part or the female part provided on the body or the handle or the vicinity of the mouth of the handle engage with each other, and the body moves against the sheath. The lock state is maintained.

To release this locked state, a finger is applied to the pressing piece of the elastic flexible piece, and the pressing piece is pressed inward of the sheath.
Then, the lock piece bends outward, and the engagement between the male portion and the female portion is released. With your fingers still in place, push the entire sheath forward and pull out.

(Example) 1st Example 1st Example of this invention is described based on FIGS. 1-5.

In the figure, 1 is a wooden handle of a cutting knife, and a body 3 is attached to a front end of the handle through a synthetic resin base 2. A female part for engagement, that is, a circular through hole 5 in the illustrated embodiment, is provided near the cutting edge of the body 3 so that a locking mechanism for preventing the lock from acting when housed in a sheath 4 described later. .

The sheath 4 is made of synthetic resin, and one side plate 6 thereof is provided with a slit-shaped notch to form an elastic flexible piece 7. The elastic flexible piece 7 extends in the longitudinal direction of the side plate 6, and its rear end is an open cut end forming a part of the mouth end of the insertion port M. A fulcrum portion 8 is provided on the side of an intermediate portion of the elastic flexible piece 7, and the elastic flexible piece 7 is connected to the side plate 6 via the fulcrum portion 8. With the fulcrum portion 8 as a boundary, the front side functions as a lock piece 9 and the rear side functions as a pressing piece 10, which function as elastic members.

As shown in the sectional views of FIGS. 3 to 5, a circular protrusion 11 is provided near one end inside the lock piece 9, and the protrusion 11 is provided on the body 3. A male portion is formed at a corresponding position so as to fit into the through hole 5.
In addition, the pressing piece 10 has a raised step portion, and its surface is provided with non-slip concavities and convexities 12 so that the thumb can be easily applied.

In addition, it is preferable that the pressing piece 10 is raised to the extent that it does not project outward from the side surface of the handle 1 when the body 3 is stored in the sheath 4. If the handle 1 is raised so as to project outward from the side surface, some pressing force is applied from above when the knife is placed sideways with the pressing piece 10 facing down,
This is because it is possible that the sheath 4 may come off unexpectedly.

The inside of the pressing piece 10 forms an inclined surface 13 that inclines outward toward the rear end. This is because when the pressing piece 10 is pressed while the body 3 is housed in the sheath 4, the inner surface of the pressing piece 10 does not contact the body 3 and thus the lock piece 9 can flex sufficiently outward. It is a consideration.

Now, when the body 3 is pushed into the sheath 4, the side surface of the body 3 hits the male portion (projection 11) formed inside the locking piece 9 of the elastic flexible piece 7. Therefore, as shown by the arrow in FIG. 4, the lock piece 9 bends outward. When the body 3 is pushed further, the female portion (through hole 5) formed on the body 3
When approaching, the male part (protrusion 11) is engaged with the female part (through hole 5) so that the female part (protruding part 5) is fitted, and the bent rock piece 9 elastically returns. For this reason,
The body 3 is held in a locked state with respect to the sheath 4.

To release the locked state, a thumb or the like is put on the pressing piece 10 of the elastic flexible piece 7, and the pressing piece 10 is pressed inward of the sheath 4. The lock piece 9 bends outward, and the male portion (protrusion)
The engagement between 11) and the female portion (through hole 5) is released. With the thumb still in place, the body 3 is pulled out by pushing the entire sheath 4 forward.

In addition, in this embodiment, the rear end of the elastic flexible piece 7 is
Although it is an open cut end that is opened to the mouth end of the insertion port M, it may be formed by a notch that is not opened at the mouth end. Further, the elastic flexible piece 7 may be formed not in the longitudinal direction of the sheath 4 but in the width direction. Further, the fulcrum portion 8 may be located between one end of the elastic flexible piece 7 and one end thereof, that is, in the middle thereof. ,
It may be provided at a position displaced to one end side.

Second Embodiment A second embodiment of the present invention will be described with reference to FIG. Explaining only the difference from the first embodiment, the male part provided inside the lock piece 9 is composed of two projecting parts 11, and the female part engaging with this male part is the two projecting parts. 11
The point is that it is composed of elongated holes 14 that fit together. In this way, if the two protrusions 11, that is, two points are locked, the body 3 in the locked state is less likely to shake.
Of course, three or more protrusions 11 may be provided.

Third Embodiment A third embodiment of the present invention will be described with reference to FIG. A feature of this embodiment is that the female portion provided on the body 3 is formed by a concave portion 15 instead of a through hole. Since the female portion is a dent, the influence on the strength of the body 3 is small.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIGS. The major difference from the first embodiment is that the elastic flexible piece 7
The positions of the lock piece 9 and the pressing piece 10 formed at are located in a position where they are reversed in the front-rear direction with the fulcrum 8 interposed therebetween. That is, the pressing piece 10 is formed on the front side with the fulcrum portion 8 interposed therebetween, and the locking piece 9 is formed on the rear side. Yotsutte, this lock piece 9
Will form a part of the mouth end of the insertion port M.
Then, a spherical depression 16 is formed on the surface of the pressing piece 10 so that a thumb or the like can be easily applied, and the inside thereof is
The front end is an inclined surface 13 that inclines outward. A projecting portion 11 forming a male portion is provided near the rear end of the lock piece 9, and a female portion provided at the base end portion of the body 3, that is, the through hole 5
It is designed to fit in with. The protrusion 11 in this embodiment is formed to have a slightly lower height on the insertion port M side so as to fit smoothly into the through hole 5.

The operation of the locking mechanism and the releasing operation thereof are almost the same as those of the sheath shown in the first embodiment. In the figure,
The same or corresponding members as those of the first embodiment are designated by the same reference numerals.

Fifth Embodiment Next, FIGS. 11 and 12 show a modified example of the female portion provided on the knife body side, which is characterized in that the female portion fitted with the male portion provided on the lock piece 9 is fitted. Is not provided on the body 3, but is provided on the handle 1, particularly near the mouth of the handle 1.

That is, the base 17 is attached to the front end of the handle 1, and the base 17 is
A sandwiching piece 18 that sandwiches a part of the base end of the body 3 from both is integrally projected, and the protrusion 11 provided on the lock piece 9 is provided on one of the side surfaces.
A recess 19 is provided that fits with the recess.

In the case of a blade not having a mouthpiece, a part of the front end of the handle may be provided to project like the sandwiching piece 18, and a recess 19 may be provided on one side surface thereof.

The above-described first to fifth embodiments have been described with respect to the example in which the male part is provided on the locking piece of the elastic flexible piece on the sheath side and the female part is provided on the handle or the body side to engage with each other. On the contrary, the design may be changed such that the male portion is provided on the handle or the body side, and the female portion engaging with the male portion is provided on the locking piece of the elastic flexible piece on the sheath side.

(Effect of Device) As is clear from the above-mentioned details, according to this device, the locking mechanism by the elastic flexible piece works only by putting the blade body in the sheath, so that the body is securely held in the sheath. And you will not accidentally get out of your sheath. Moreover, the locked state can be released by a simple operation of merely pushing the pressing piece, which is a part of the elastic flexible piece, inwardly of the sheath, which is excellent in usability.

[Brief description of drawings]

1 to 5 are all drawings showing the first tool of the present invention.
Fig. 1 shows an embodiment, Fig. 1 is an exploded perspective view of the blade, Fig. 2 is a front view of a sheath of the blade, and Fig. 3 is a state in which the blade is disassembled into a handle, a body side and a sheath side. Fig. 4 is a partial cross-sectional view observed from the back side of Fig. 4, Fig. 4 is a partially cutaway plan view of the blade body being inserted into the sheath, and Fig. 5 is a main part in a state where the blade body is inserted into the sheath. It is an expanded sectional view. FIG. 6 shows a second embodiment of the cutting tool according to the present invention, and is a partial cross-sectional view observed from the back side in a state where the cutting tool is disassembled into a handle and a body side and a sheath side. FIG. 7 shows a third embodiment of the cutting tool according to the present invention, and is an enlarged sectional view of an essential part in a state where the cutting tool body is inserted into a sheath. Figures 8 to
FIG. 10 shows a fourth embodiment of a knife according to the present invention, FIG. 8 is a front view in which the knife is disassembled into a handle, a body side and a sheath side, and FIG. FIG. 10 is a partially cutaway plan view of the blade body being inserted into the sheath, and FIG. 10 is a sectional view of the blade sheath observed from the back side. 11th
FIG. 12 and FIG. 12 show a fifth embodiment of the blade according to the present invention, and are a partially cutaway front view and a partially cutaway plan view showing a modified example of the knife portion provided on the handle or on the body side. . DESCRIPTION OF SYMBOLS 1 ... Handle, 3 ... Body 4, Sheath, 5,14,15,19, ... Female part 6 ... Side plate, 7 ... Elastic flexible piece 8 ... Support point part, 9 ... Lock piece 10 ... Pressing piece, 11 ... Male part

Claims (1)

[Scope of utility model registration request] 1. A notch is provided in a side plate of a sheath, a fulcrum portion is provided at an intermediate portion, and an elastic flexible piece connected to the side plate through the fulcrum portion is formed. The elastic flexible piece is used as a pressing piece, and the elastic flexible piece on the other side is used as a locking piece, and the body of the blade is attached to the locking piece and the body of the blade or the handle or the vicinity of the mouth of the handle. A male portion or a female portion that engages with each other is provided by pushing the piece outward so as to push it into the sheath, and the engagement of the male portion and the female portion is performed by pressing the pressing piece into the sheath. The blade is characterized in that the lock piece is bent outward to be released by pressing the lock piece inward.