JPS633654Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a replaceable blade type knife, and its purpose is to provide a knife to which two or more types of blades having different core thicknesses can be attached. That is.

Next, the configuration of the present invention will be explained according to the drawings shown as examples. A groove 2 for inserting a core 3 of the blade body is provided in the longitudinal direction inside the handle 1.
At least one end of this groove is open for inserting the core 3. The groove 2 consists of a hole 13 formed by hollowing out the center of the handle 1, a groove 9 provided along the inner surface of the hole 13, and side walls 4 and 5 of two side plates 7 and 10. One side plate 7 has a normal plate shape, but the other side plate 10 has a notch 11 extending along the periphery of the back surface thereof. A collar portion 12 extends along one peripheral edge of the groove 9 so as to correspond to the notch portion 11 . Therefore, the other side plate 10 is locked to the flange 12 and does not move further into the groove. The side plates 7, 10 and the core 3 are provided with through holes 14, 15, 16 through which the screw members 6 pass. Since the screw member 6 is provided with a large notch 17, the screw can be loosened and tightened using a 10 yen coin.

The present invention has the above-described configuration, and when attaching the blade 8 to the handle, the core 3 is inserted into the groove 2,
The side plates 7, 10 are inserted into the hole 13 of the handle, and the core 3 is tightened with the screw members 6, 6. As a result, side plate 1
0 is locked by the flange 12 and does not advance into the groove 2, but the other side plate 7 advances into the groove 2, so the core is pressed against the side walls 4 and 5 of both side plates. Securely fixed to the handle.

The feature of the present invention is that, as mentioned above, only one of the side surfaces that press the core 3 can be moved inside the groove 2, so even if other blades with different thicknesses of the core 3 are used, it can be adjusted according to the thickness. Even in such a case, the blade can be securely fixed to the handle because one side moves.

Conventional knives have a structure in which a groove is provided in the handle and a core is clamped and fixed therein, and the upper and lower edges of the core are exposed on the upper and lower surfaces of the handle. Therefore,
As a result, water seeped into the tightening metal fittings through the exposed parts. Normally, the core is made of iron, and the fastening fittings are made of a different rust-free material, such as stainless steel or copper, but if the iron core and stainless steel fittings come into contact,
Due to the different ionization tendencies of the materials, the contact parts were extremely susceptible to rust, which caused the knife to easily rattle.

On the other hand, the present invention does not have a groove in the handle and the upper and lower edges of the core are not exposed, making it difficult for water to seep into the vicinity of the tightening fittings and preventing the connection between the tightening fittings and the core. It can effectively prevent contact parts from rusting.

The above-mentioned configuration is one example, and it goes without saying that the side plate 10 may be formed integrally with the handle, for example.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention and are shown in the drawings.
The figure is an exploded perspective view of the handle, Figure 2 is a cross-sectional view of the handle, Figure 3 is a perspective view of the core of the blade, and Figure 4 is a partial perspective view of the knife. 1...handle, 2...groove, 3...core, 4,5...
Side wall, 7, 10... side plate.

Claims (1)

[Scope of utility model registration request] A groove for inserting the core of the blade in the longitudinal direction inside the handle is provided, and the groove has side walls on both sides to press and fix the core inserted into the groove from both sides. The means for press-fitting the core from both sides is a fastener that passes through the core and the handle, and at least one side wall of both side walls of the groove is fitted into a hole drilled in one side of the handle. A replaceable blade type knife, characterized in that the side plate is on the back side, and the side plate is movable toward the other side wall.