JP3103210U - Kitchen knife - Google Patents

Abstract

An object of the present invention is to prevent the accumulation of dirt or water from entering a welded portion between a blade plate and a grip portion, and furthermore, it is easy to manufacture, has extremely high strength, and is liable to cause cracks and the like. Provide a kitchen knife with excellent practicality.
A base end portion of a metal blade plate is welded to a distal end portion of a metal grip portion, and the welded portion is polished to join the blade plate and the grip portion. At the base end of the blade 1, a joint bulge 5 having an end surface several times thicker than the thickness of the blade 1 and wider than the cross section of the blade 1 is integrally formed. Then, the tip of the grip portion 2 is butted or locked to the joint bulging portion 5 and substantially the entire circumference is welded.
[Selection diagram] Fig. 1

Description

  The present invention relates to a kitchen knife.

  For example, there has been proposed a kitchen knife in which both a blade plate and a handle portion are made of stainless steel (a so-called all stainless steel kitchen knife, hereinafter referred to as a conventional example).

  In this conventional example, as shown in FIGS. 4 and 5, a joining surface 11B formed at a base end portion of a stainless steel blade plate 11 and having a width substantially equal to the thickness of the blade plate 11 is provided. 5 is argon welded to the joint surface 12B formed by crushing the tip of the grip portion 12 from the left and right in FIG. 5, and the welded portion 13 is polished to join the blade plate 11 and the grip portion 12. By doing so, it is a kitchen knife in which the blade plate 11 and the grip portion 12 are integrated.

  That is, this kitchen knife has no slight gap in the welded portion between the blade plate and the gripping portion, unlike a conventional kitchen knife in which the base end portion of a metal blade plate is inserted and locked in a wooden gripping portion. Thus, there is no concern that dirt accumulates in the welded portion between the blade plate and the grip portion, and that the base end portion of the blade plate rusts and breaks over time.

  However, the conventional example is formed by welding a narrow joint surface having substantially the same thickness as the blade plate and a narrow joint surface on the grip handle side formed by crushing. The welding area with the holding portion is not large, and therefore, the strength of the joining portion is not large, and as shown in FIG. 7, there is a possibility that a crack may occur in the welding portion or in the vicinity of the welding portion.

  That is, in the conventional configuration, there is no inconvenience such as contamination or water accumulation in the welded portion between the blade plate and the grip portion, but the strength is not sufficient and there is a concern that cracks may occur.

  The present invention can prevent the accumulation of dirt and water from entering the welded portion between the blade plate and the gripping portion, and furthermore, it is easy to manufacture, has extremely high strength, and may cause cracks and the like. The purpose is to provide a kitchen knife with excellent practicality.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A kitchen knife in which a base end of a metal blade plate 1 and a distal end of a metal grip portion 2 are welded, the welded portion 3 is polished, and the blade plate 1 and the grip portion 2 are joined. At the base end of the blade plate 1, a joint bulging portion 5 having an end face several times or more larger than the plate thickness of the blade plate 1 and having a width several times or more larger than the cross section of the blade plate 1 is integrally formed. The kitchen knife is characterized in that the distal end of the grip portion 2 is butted or locked to the joint bulging portion 5 and welded substantially all around.

  2. The kitchen knife according to claim 1, wherein an end surface of the joint bulging portion has a size substantially equal to a cross-sectional area of the handle.

  The joint bulging portion 5 is formed by bulging a base end portion of the blade plate 1 into a substantially mushroom shape or a substantially trumpet shape by forging, thereby forming an end surface with a large diameter. The kitchen knife according to any one of (1) and (2).

  In addition, the joint bulging portion 5 is formed by integrally forming a thick disk-shaped portion having a large-diameter end surface substantially equal to the cross section of the grip portion 2 at the base end portion of the blade plate 1. The kitchen knife according to any one of claims 1 to 3, characterized in that:

  Since the present invention is configured as described above, dirt can be prevented from accumulating in the welded portion between the blade plate and the handle, and water can be prevented from entering, and, furthermore, the production is facilitated and extremely strong. It is a kitchen knife that is large and has good practicality without any fear of cracks.

  Further, in the invention according to claim 2, it is possible to reliably secure an end surface that is several times or more larger than the cross section of the blade plate, and to weld the base end portion of the blade plate and the distal end portion of the grip portion. When the welded portion is polished, the outer surface of the base end portion of the blade plate and the outer surface of the distal end of the grip portion can be made substantially flush with each other, whereby an unnatural step or dent is formed in the welded portion. By eliminating the occurrence of the knives, a kitchen knife with excellent design can be realized, and the kitchen knife with excellent practicality can be realized.

  In the invention according to claim 3, the joint swelling portion can be more easily formed integrally with the swelling portion, and moreover, an end surface that is several times larger than the blade plate cross section can be reliably formed. Thus, the joining swelling portion is integrally swelled through the curved portion to form a kitchen knife with excellent design that can realize a kitchen knife with good design.

  Further, in the device according to the fourth aspect, the end face that is several times thicker than the plate thickness of the blade plate and that is several times larger than the cross section of the blade plate can be reliably and easily designed and realized. Knives.

  A preferred embodiment of the present invention (how best to implement the present invention) will be briefly described with reference to the drawings, showing its operational effects.

  In the present invention, the joining bulging portion 5 provided at the base end of the blade plate 1 is not made to be slightly thicker than the plate thickness of the blade plate 1 and not to have an end surface slightly wider than the blade plate cross section. By forming the end face that is several times or more thicker than the plate thickness of the blade plate 1 and has a width that is several times or more larger than the cross section of the blade plate, The tip can be securely joined with a wider joining area.

  Also, the joint bulging portion 5 and the distal end portion of the grip portion 2 are butted or locked, and substantially the entire circumference of the butted portion or the locked portion is welded, so that the joint bulging portion 5 is gripped. The distal end of the holding portion 2 can be welded over a longer distance, whereby the blade plate 1 and the gripping portion 2 can be firmly joined to achieve a very high joining strength.

  Further, the joint swelling portion 5 can be formed easily and easily by integral swelling.

  Therefore, according to the present invention, the blade plate 1 and the gripping portion 2 can be joined with sufficient strength by welding the distal end portion of the gripping portion 2 to the joining bulging portion 5 over a longer distance. The kitchen knife is free from cracks at or near the welded portion 3 between the blade plate 1 and the grip portion 2.

  Further, the joint swelling portion 5 for joining the blade plate 1 and the grip portion 2 with sufficient strength can be simply and easily designed and realized by integral swelling. 1 can be manufactured by a simple method of welding the base end portion and the distal end portion of the grip portion 2 and polishing the welded portion 3, so that it can be easily manufactured and is excellent in mass productivity.

  Further, for example, if the end surface of the joint bulging portion 5 is substantially equal in size to the cross-sectional area of the grip portion 2, an end surface that is several times or more larger than the blade plate cross section can be reliably secured. When the base portion of the blade plate 1 is welded to the tip portion of the grip portion 2 and the welded portion 3 is polished, the outer surface of the base portion of the blade plate 1 and the outer surface of the tip portion of the grip portion 2 are removed. Can be made substantially flush with each other, whereby an unnatural step or dent is not generated in the welded portion 3, whereby a kitchen knife excellent in design can be realized, which is more practical. .

  Further, for example, if the joining swelling portion 5 has a configuration in which the base end of the blade plate 1 is formed to have a substantially mushroom-like or substantially trumpet-like shape by forging and the end face is formed to have a large diameter, the joining swelling portion 5 The protruding portion 5 can be more easily formed as an integral bulge, and furthermore, an end face which is several times or more larger than the cross section of the blade plate can be reliably formed. It becomes even more practical, for example, because it is possible to realize a kitchen knife with good design by forming an integral bulge.

  In addition, for example, the joint bulging portion 5 is formed by integrally forming a thick disk-shaped portion having a large-diameter end surface substantially equal to the cross section of the grip portion 2 at the base end portion of the blade plate 1. With such a configuration, the end face which is several times thicker than the plate thickness of the blade plate 1 and which is several times larger than the cross section of the blade plate 1 can be reliably and easily designed and realized.

  A specific embodiment of the present invention will be described with reference to the drawings.

  In the present embodiment, the base end of the metal blade plate 1 is welded to the distal end of the metal grip portion 2, and the welded portion 3 is polished to grind the blade plate 1 and the grip portion 2. And a joint bulging portion having an end face at the base end of the blade plate 1 which is several times or more thicker than the plate thickness of the blade plate 1 and which is several times or more wider than the cross section of the blade plate 1. 5 relates to a kitchen knife having a configuration in which a substantially bulged portion is formed, and a front end portion of the grip portion 2 is abutted or locked on the bulging portion 5 for joining and welded substantially all around.

  In this embodiment, as shown in FIGS. 1 and 3, a gripping portion 2 also made of stainless steel and having a substantially vertical rectangular cross section is welded to a stainless steel blade plate 1, and holes and grooves are formed in the welded portion 3. Uses a knives that have been polished so that they are not polished. The blade plate 1 and the grip portion 2 may be made of a metal other than stainless steel (for example, steel).

  Specifically, the joint bulging portion 5 has a configuration in which the base end of the blade plate 1 is bulged in a substantially mushroom shape or a substantially trumpet shape by forging, and the end surface is formed to have a large diameter. This makes it possible to easily design and realize the joint bulging portion 5, and thus to easily design and realize the kitchen knife according to the present embodiment in which cracks hardly occur in the welded portion 3 between the blade plate 1 and the grip portion 2. Become.

  The end surface of the joint bulging portion 5 is set to a size substantially equal to the cross-sectional area of the grip portion 2 and is formed as a flat surface. Thereby, the front end of the grip portion 2 is welded to the end face of the joint bulging portion 5, and when the welded portion 3 is polished, the outer surface of the joint bulge portion 5 and the outer surface of the grip end portion 2 Can be formed almost flush with each other to produce a kitchen knife with excellent design.

  In addition, the joint bulging portion 5 has a configuration in which a thick plate-like portion having a large-diameter end surface substantially equal to the cross section of the grip portion 2 and having a large thickness is formed integrally with the base end portion of the blade plate 1. I have.

  More specifically, as shown in FIG. 1, the joint swelling portion 5 is crushed from the left and right and curved so as to gradually increase in diameter toward the base end, and the end face is formed in a substantially vertical rectangular cross section. The configuration is as follows.

  The end surface of the joint bulging portion 5 and the tip of the grip portion 2 are butted, and substantially the entire circumference of the butted portion is welded (see FIG. 2) to join the blade plate 1 and the grip portion 2 together. It has a configuration. Thereby, the blade plate 1 and the grip portion 2 can be welded over a longer distance, so that the blade plate 1 and the grip portion 2 can be firmly joined.

  In this embodiment, the end surface of the joint bulging portion 5 and the tip of the grip portion 2 are welded by abutting each other. However, the joint bulge portion is provided inside the tip portion of the grip portion 2. The blade plate 1 and the gripping portion 2 may be joined by fitting and welding the blade 5.

  Therefore, in the present invention, the joint bulge 5 having a large end surface for joining is formed at the base end of the blade plate 1, and the tip of the grip portion 2 is attached to the end surface of the joint bulge 5. The blade plate 1 and the gripping portion 2 can be joined with sufficient strength by abutting and welding substantially the entire periphery of the abutted portion, thereby causing cracks in the welded portion 3 or in the vicinity of the welded portion 3. There is no.

  Accordingly, a kitchen knife having no hole or groove in which dirt or water accumulates between the base end of the blade plate 1 and the front end of the grip portion 2 can be easily manufactured without fear of cracking. .

  Note that the present invention is not limited to the embodiment, and the specific configuration of each component can be appropriately designed.

It is an explanatory perspective view showing a state before joining of a blade plate and a grip part of this example. It is an explanatory perspective view showing this welding part which joined the blade plate of this example and a grip part by welding. FIG. 3 is an explanatory perspective view showing a state in which a welded portion in FIG. 2 of the present embodiment is polished. It is an explanatory perspective view showing the state before joining of the blade plate and the grip part of the conventional example. It is an expansion perspective view of the principal part which shows the joint surface formed in the base end part of the conventional blade blade, and the joint surface formed in the front-end | tip of a grip part. It is explanatory side view which shows the welding part of the blade plate and grip part of the prior art example. FIG. 9 is an explanatory perspective view showing a conventional example in which a crack occurs in a welded portion between a blade plate and a grip portion.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Blade plate 2 Gripping part 3 Welding part 5 Swelling part for joining

Claims (4)

  In a kitchen knife in which a base end portion of a metal blade plate and a distal end portion of a metal grip portion are welded, and the welded portion is polished to join the blade plate and the grip portion, At the base end, a joint bulge having an end face several times or more thicker than the plate thickness of the blade plate and having a surface area several times or more larger than the blade plate cross section is integrally formed. A kitchen knife, characterized in that the distal ends of the gripping portions are butted or locked and welded substantially all around.   The kitchen knife according to claim 1, wherein an end surface of the joint bulge has a size substantially equal to a cross-sectional area of the handle.   4. The joint bulging portion according to claim 1, wherein the blade plate base end portion is formed in a substantially mushroom-like or substantially trumpet-like bulging shape by forging to form an end surface with a large diameter. A kitchen knife according to any one of the preceding claims. The joint swelling portion is characterized in that a thick disc-shaped portion having a large-diameter end surface substantially equal to a cross section of the grip portion is formed integrally with the base end portion of the blade plate. The kitchen knife according to any one of claims 1 to 3.

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