JP4607046B2 - Knife - Google Patents

Description

  The present invention relates to a knife such as a knife or a knife, and more particularly to a connecting structure of a core formed at a base portion of a base portion of a blade portion and a base portion provided at a distal end portion of a main body of a handle portion.

  Generally, the handle portion and blade portion of a kitchen knife are inserted into a flat insertion hole formed in the center portion of the handle portion by inserting a core integrally formed at the base end portion of the blade portion, and the handle portion and the handle portion are formed by caulking pins. The core is connected. For this reason, there is a risk that water, food residue, or the like may enter the gap between the contact surfaces of the insertion hole and the core. In order to solve this problem, a connecting structure in which the tip edge of the core formed integrally with the base end portion of the blade portion is abutted and welded to the tip surface of the metal base portion provided at the tip portion of the handle portion of the knife Has been taken. By this welding, the base part and the core are integrated, and the appearance can be improved.

  However, since the conventional connecting structure of the base part and the core of the blade part is welded by groove welding with the narrow end face of the core abutting against the narrow end face of the base part, the base part and the core As a result, the welding strength is difficult, and it is difficult to weld the blade portion so as to be positioned on the center line of the handle portion.

  The objective of this invention is providing the blade which can eliminate the said conventional problem, can perform a connection of a nozzle | cap | die part and a blade part easily, and can raise a connection intensity | strength.

In order to solve the above problems, the invention according to claim 1 is provided with a base at the tip of the main body of the handle, and the insertion groove is formed at the tip of the base so as to be directed in the vertical direction. The core formed integrally with the base end portion of the blade portion is inserted into the insertion groove, and the upper end edge of the base end portion of the blade portion is positioned below the upper end edge of the tip end surface of the base portion. An upper step portion is provided, a lower step portion is provided by positioning a lower end edge of the base end portion of the blade portion above a lower end edge of the tip end surface of the base portion , and both sides of the base end portion of the blade portion A metal other than the base end portion and the base portion of the blade portion is melted so as to shield all of the pair of left and right step portions formed by the surface and the front end surface of the base portion and the upper and lower step portions. wear to form a built-up portion, so that the meat-up portion is the respective stepped portions not exposed, and that the ground molded into a narrowed mouthpiece as tip Abstracts To.

The gist of the invention according to claim 2 is that, in claim 1, a bottom metal part is integrally formed at a rear end part of the main body of the handle part.
The gist of a third aspect of the present invention is that, in the first or second aspect, the insertion groove is provided with a locking portion that positions the lower end edge of the core.

The gist of a fourth aspect of the present invention is that, in any one of the first to third aspects, the main body, the base portion, and the bottom portion of the handle portion are integrally formed of a metal material.
The gist of the invention according to claim 5 is that, in any one of claims 1 to 4, a side plate is joined to both side surfaces of the main body of the handle.

  According to the present invention, the base part and the blade part can be easily connected and the connection strength can be increased.

Hereinafter, an embodiment in which the present invention is embodied in a kitchen knife will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the knife is composed of a handle portion 11 and a blade portion 12 connected to the tip portion of the handle portion 11. The handle 11 includes a flat stainless steel main body 13 located at the center, a base 14 integrally formed at the front end of the main body 13, and a bottom metal integrally formed at the rear end of the main body 13. Part 15. The handle portion 11 is in contact with both side surfaces of the main body 13 so as to be positioned between the base portion 14 and the bottom portion 15, and is a pair of left and right wooden side plates 17 that are caulked with caulking pins 16. , 17.

Next, the manufacturing method of said knife is demonstrated.
As shown in FIG. 3, the body 13 and the side plate 17 are formed with holes 13a and 17a penetrating the caulking pin 16 at a plurality of locations. The main body 13, the base part 14, and the bottom part 15 of the handle part 11 are in a roughly processed state. The base portion 14 is formed in a square block shape, and tapered surfaces 14a and 14b that are narrower toward the tip are formed on the left and right side surfaces of the tip. An insertion groove 14d is formed so as to penetrate in the vertical direction from the center in the left-right direction of the distal end surface 14c of the base part 14 toward the inside of the base part 14. The vertical width W of the core 12a formed integrally with the rear end portion of the blade portion 12 is smaller than the vertical length L of the insertion groove 14d (for example, 1 to 2 mm).

Next, the connection method of the blade part 12 with respect to the said nozzle | cap | die part 14 is demonstrated.
As shown in FIG. 4 and FIG. 5, while inserting the front-end | tip part of the core 12a of the blade part 12 in the insertion groove 14d of the said nozzle | cap | die part 14, the upper and lower end surfaces 12b and 12c of the core 12a are respectively inserted into the insertion groove 14d. The same dimension H (for example, 0.5 to 1.0 mm) is immersed inside to form the groove portion 18, and this state is held by a holding device (not shown) prior to the welding operation. As shown in FIG. 4, the upper edge of the base end portion of the blade portion 12 is positioned below the upper end edge of the distal end surface of the base portion 14 to provide an upper step portion, and the base end of the blade portion 12 is provided. the lower edge parts is provided with a lower stepped portion is positioned above the lower edge of the front end face of the base part 14.

Next, as shown in FIGS. 6 and 7, a metal different from the base end portion of the blade portion 12 and the base portion 14 so as to cover the front end opening edge of the insertion groove 14 d of the base portion 14 and the groove portion 18. carried out of the soluble binder to form a built-up portion 21. This the cladding portion 21 and a proximal end and a core 12a of the cap portion 14 and the blade portion 12 is connected.

  Further, as shown in FIGS. 8 and 9, the base portion 14 and the welded portion 21 in the rough finish state are ground by hand to an external shape assumed in advance, so that the base portion 14 is shown in FIG. Finishing is performed so that the left and right side surfaces are smooth curved surfaces, and the cross section of the base portion 14 is elliptical as shown in FIG. In this finishing process, the opening edge of the insertion groove 14d of the base part 14 and the upper and lower end faces 12b, 12c of the core 12a are exposed so that no boundary line appears.

Subsequent to the finishing process of the base part 14 by manual work, the finishing part of the tail part 15 is finished by manual work, and the outer shape thereof is made into a smooth curved surface shape.
Finally, the side plate 17 is brought into contact with the left and right side surfaces of the main body 13 shown in FIGS. .

According to the blade of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the insertion groove 14d is formed in the base part 14, the core 12a of the blade part 12 is inserted into the insertion groove 14d, and is separate from the base end part of the blade part 12 and the base part 14. after forming the overlaid portion 21 by metal soluble adhesive, a meat-up portion 21 and finished by hand using a grinder or the like, a proximal end and a core 12a of the cap portion 14 and the blade portion 12 Were connected. For this reason, it is possible to easily perform the welding operation as compared with the groove welding used for connecting the base part and the core, and the base part 14 and the base end part of the blade part 12 and the core 12a . The connection strength can be improved. Further, since the core 12a is inserted into the insertion groove 14d, the blade portion 12 can be positioned straight on the extension of the center line of the main body 13 and the base portion 14.

(2) In the above embodiment, since the base part 14 and the bottom part 15 are formed integrally with the main body 13, the number of parts can be reduced, manufacturing can be facilitated, and the cost can be reduced.
(3) In the above embodiment, the core portion 12a of the blade portion 12 is inserted into the insertion groove 14d of the base portion 14, and the upper and lower end surfaces 12b, 12c of the core 12a are immersed in the insertion groove 14d to form the groove portion 18. And since the meat part of the build-up part 21 was made to approach into this groove part 18, the connection strength of the nozzle | cap | die part 14 and the core 12a can be improved.

In addition, you may change the said embodiment as follows.
-As shown in FIG. 11, you may form the latching | locking part 14e which latches the lower end edge of the core 12a in the lower part of the insertion groove 14d of the said nozzle | cap | die part 14. As shown in FIG. In this case, the base part 14 and the core 12a can be easily aligned.

  As shown in FIG. 12, the insertion groove 14d may be formed in a tapered shape, and the core 12a may be formed in a tapered shape. In this case, the base part 14 and the core 12a can be reliably aligned.

-You may change the shape of the bottom part 15 as shown in FIG.
. As shown in FIG. 14, the base part 14 and the bottom part 15 are formed as a single unit, the base part 14 and the bottom part 15 are connected by a connecting bolt 25, and the base part 14 and the bottom part are connected to the outer periphery of the connecting bolt 25. A handle body 26 located between the gold parts 15 may be mounted.

  -Although not shown in figure, you may integrally form the pattern part 11 with a metal.

The partial omission front view which shows one Embodiment which actualized this invention in the kitchen knife. The partial omission plan view of a kitchen knife. The separation perspective view of the parts which constitute the handle part of a kitchen knife. The front view explaining the connection operation | work of a nozzle | cap | die part and the core of a blade part. The top view of FIG. The front view explaining the connection operation | work of a nozzle | cap | die part and the core of a blade part. The top view of FIG. The front view explaining the connection operation | work of a nozzle | cap | die part and the core of a blade part. The top view of FIG. FIG. 9 is a sectional view taken along line 1-1 of FIG. 8. Sectional drawing of the nozzle | cap | die part which shows another embodiment of this invention. Sectional drawing of the nozzle | cap | die part which shows another embodiment of this invention. The front view of the bottom metal part which shows another embodiment of this invention. The longitudinal cross-sectional view of the handle | pattern part which shows another embodiment of this invention.

Explanation of symbols

11 ... shank, 12 ... cutting edge portion, 12a ... core, 13 ... main body, 14 ... base part, 14d ... insertion groove, 14e ... locking portion, 15 ... Shirikin unit, 17 ... side plate 21 ... cladding portion .

Claims (5)

A core that is provided with a base at the distal end of the main body of the handle, and is formed so that an insertion groove is directed in the vertical direction at the distal end of the base, and is formed integrally with the proximal end of the blade in the insertion groove The upper end edge of the base end portion of the blade portion is positioned below the upper end edge of the tip end surface of the base portion to provide an upper stepped portion, the lower end edge of the base end portion of the blade portion , A pair of left and right step portions formed by both side surfaces of the base end portion of the blade portion and the tip end surface of the base portion are provided above the lower end edge of the front end surface of the base portion to provide a lower step portion. , the upper and to dissolve wearing different metal than the base end portion of the blade portion and the cap portion so as to shield all the lower stepped portion forming the overlaid portion, each step of said meat-up portion as part it is not exposed, and cutlery, characterized in that the grinding molded into a narrowed mouthpiece as tip. The cutter according to claim 1, wherein a bottom metal part is integrally formed at a rear end part of the main body of the handle part. The blade according to claim 1 or 2, wherein the insertion groove is provided with a locking portion that positions the lower end edge of the core. The blade according to any one of claims 1 to 3, wherein the main body, the base portion, and the bottom portion of the handle portion are integrally formed of a metal material. The blade according to any one of claims 1 to 4, wherein side plates are joined to both side surfaces of the main body of the handle.

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