JP2012005660A - Kitchen knife - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and inexpensively manufacture a kitchen knife provided with a handle formed of a material such as aluminum preferable to sanitation and difficult in manufacturing.SOLUTION: The kitchen knife includes a blade body 20 provided with an edge 11 and the core 12, a cylindrical handle cover 25 made of aluminum, a handle body 21 to which the cover 25 is fixed, and an anti-slip member 26 for preventing the cover 25 from slipping off. The handle body 21, including a setting part 23 to which the inside of the cover 25 is set nearly tightly-closely, a collar part 22 provided on one end of the part 23 to prevent the cover 25 from slipping off and a fixing part 24 provided on the other end of the part 23 and to fix the member 26, is one-piece molded from a resin. The member 26 includes a recess 27 for insertion of the part 24. A wall 26b forming the recess is inserted into a gap between the periphery of the part 24 and the inside of the cover 25. The core 12 is insert-molded into the handle body 21.

Description

  The present invention relates to knives, and more specifically to the structure of a knife handle.

  Many kitchen knives have a structure in which a blade and a core are integrated with a blade and a handle, and the handle is attached to the core. The blade body is generally made of steel, and the handle is generally made of wood. However, wooden handles often corrode, and various kitchen knives using metal handles such as stainless steel and plastic handles have been proposed due to sanitary problems and durability problems.

  As a method of attaching the handle of such a material to the core, a method of sandwiching the core with a plate-like member that becomes a handle, an insertion hole for inserting the core into the handle, and a core inserted into the core into the handle There are a method of fixing with a resin, a method of providing a through-hole through which a core is inserted in the handle, fixing the inserted core by screwing, etc., a method of joining the end face of the blade to the end face of the handle, etc. .

  For example, Japanese Utility Model Laid-Open Publication No. 62-159855 (Patent Document 1) discloses a blade body in which a base having a blade and a positioning recess and a core shaft having a screw at an end are integrally formed, and a core. A handle having a through-hole through which the shaft is inserted, a convex portion that can be fitted into the concave portion at one end, and a recess that allows the core shaft to be screwed with a nut at the other end, and the core shaft in the concave portion A knife is described in which the opening of the recess is closed with a cap member after screwing.

  Japanese Utility Model Laid-Open No. 6-17666 (Patent Document 2) discloses a blade body in which a core in which a screw portion is connected by a connecting material is integrally formed, a handle provided with a through-hole through which the connecting material is inserted, and a screw portion. A knife having a pad that is screwed onto the handle to fix the handle is described.

  Japanese Laid-Open Patent Publication No. 4-285579 (Patent Document 3) describes a kitchen knife in which an insert part in which a plastic spacer is attached to a core is formed and a plastic handle is formed around the insert part. .

  By the way, it is preferable to manufacture the blade from steel from the viewpoint of sharpness and care, and from the viewpoint of hygiene, it is preferable to use a handle made of stainless steel or aluminum. Further, from the viewpoint of operability, it is desirable to use a handle having a shape that is easy to grip with a hand. However, it is difficult to weld the core and the handle made of different materials with the method of sandwiching the handle member on both sides of the core, and the number of steps increases if a process such as riveting or screwing is adopted. The production is very troublesome. In addition, the method of joining the blade to the end face of the handle requires a high level of welding technique, and in some cases, there is a problem that the joint may be broken due to insufficient strength. In addition to this, a pattern must be manufactured by cutting a metal lump, which requires advanced techniques. In particular, when an aluminum material is used, the processing often involves difficulties.

  In this regard, the method described in Patent Document 1 or Patent Document 2 is not a method of joining the blade to the end face of the handle, but instead of manufacturing the entire handle having a thick shape that fits the hand from a metal lump such as aluminum. However, there is a problem that it is difficult to process into a shape that is easy to grasp by hand. In addition, in the method described in Patent Document 1, it is difficult to fix the screw in the recess of the handle, and in the method described in Patent Document 2, how to cut the male screw and the female screw is not sufficiently adjusted. Then, there is a problem that the position of the pad after tightening is shifted and the pattern and the pad are not well integrated. The method described in Patent Document 3 is a method of so-called insert molding of the spacer portion attached to the core together with the core, and this method cannot produce a handle other than plastic.

Japanese Utility Model Publication No. 62-159855 Japanese Utility Model Publication No. 6-17666 JP-A-4-285579

  The present invention has been made in view of the above-mentioned background art, and an object of the present invention is to easily and inexpensively provide a knife with a handle using a material that is preferable for hygiene but difficult to process, such as aluminum. There is to manufacture.

  The knife of the present invention includes a blade body having a blade and a core, a cylindrical metal handle cover, a handle body to which the handle cover is attached, and a drop-off preventing member that prevents the handle cover from falling off. The handle body includes a mounting portion to which the inner surface of the handle cover is attached in close contact, a base portion for preventing the handle cover from falling off at one end of the mounting portion, and the other end of the mounting portion at the other end. An attachment portion to which the drop-off prevention member is attached is integrally formed from a resin material, and the drop-off prevention member has a recess for inserting the attachment portion, and a wall that forms the recess is a peripheral surface of the attachment portion. And the core is insert-molded into the handle body.

  According to the present invention, there is provided a kitchen knife that can be produced by an inexpensive and simple method while having a hygienic pattern such as an aluminum pattern.

FIG. 1 is a perspective view in which a part of a knife according to an embodiment of the present invention is omitted. FIG. 2 is a side view in which a part of the kitchen knife is omitted. FIG. 3 is an exploded perspective view showing the structure of the handle of the knife. 4 is a cross-sectional view taken along line AA in FIG. FIG. 5 is an exploded perspective view showing the structure of the handle bottom of the knife.

  The knife of the present invention includes a blade body having a blade and a core, a cylindrical metal handle cover, a handle body to which the handle cover is attached, and a drop-off preventing member that prevents the handle cover from falling off. The handle body includes a mounting portion to which the inner surface of the handle cover is attached in close contact, a base portion for preventing the handle cover from falling off at one end of the mounting portion, and the other end of the mounting portion at the other end. An attachment portion to which the drop-off prevention member is attached is integrally formed from a resin material, and the drop-off prevention member has a recess for inserting the attachment portion, and a wall that forms the recess is a peripheral surface of the attachment portion. And a part of the core is insert-molded in the handle body.

  That is, the handle portion of the kitchen knife has a resin handle body in which a core is insert-molded, a handle cover made of a cylindrical metal attached to the handle body, and a drop prevention means for preventing the handle cover from falling off. It is composed of Hereinafter, the present invention will be described in detail based on the following examples.

  1 is a perspective view in which a part of a kitchen knife according to an embodiment of the present invention is omitted, FIG. 2 is a side view in which a part of the kitchen knife is omitted, and FIG. 3 is an exploded perspective view showing a structure of a handle of the knife. 4 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 5 is an exploded perspective view showing the structure of the handle bottom of the knife.

  The knife 1 according to the present invention includes a blade body 10 and a handle 20 each having a blade 11 and a core 12. In the kitchen knife 1 shown in FIG. 1, the blade body 10 is manufactured by integrally manufacturing a blade 11 and a core 12, and a part of the blade 11 is omitted. The shape of the blade 11 such as a Japanese knife such as a knife, sashimi knife, or a Western knife is not limited. The material of the blade body 10 is not limited, but a blade body made of steel or stainless steel is preferably used. This is because the blade 10 made of steel can be handled in the same way as a kitchen knife that has been familiar to them, such as sharpness and care. When the blade 10 made of stainless steel is used, the knife is boiled and disinfected. This is because washing with a dishwasher becomes possible.

  The handle 20 includes a resin-made handle body 21, a handle cover 25 attached to the handle body 21, and a drop-off prevention member 26 that prevents the handle cover 25 from falling off. The handle cover 25 is made of a metal cylindrical member and has a uniform thickness. The illustrated handle cover 25 has a heptagonal cross section, but the cross section of the handle cover 25 can be designed in any shape such as an ellipse or a circle. Considering the ease of gripping and the difficulty of sliding, it is preferable that the cross section of the handle cover 25 is a polygonal frame. Examples of the cross-sectional shape of the handle cover 25 include pentagons, hexagons, heptagons, and octagons. At this time, the cross-section has a shape in which the upper side is horizontal when the back of the blade 11 is turned up. Is preferred. This is because the handle cover 25 is a portion that can be gripped by a hand, and can be stably gripped when its upper surface is a horizontal plane. Moreover, it is preferable that the cross section of the handle cover 25 has a symmetrical shape as shown in FIG. This is because left-handed and right-handed use can be achieved by using a symmetrical cross-sectional shape. However, it is not always necessary to have left-right symmetry, and either the left or right side surface may be inflated so that it can be easily gripped with the right hand (for right-handed use) or left-handed (for left-handed use). The handle cover 25 is preferably made from stainless steel or aluminum from the viewpoint of hygiene, particularly from the viewpoint of reducing the weight of the handle 20.

  The handle body 21 has a mounting portion 23 to which the handle cover 25 is mounted, a base portion 22 that prevents the handle cover 25 from dropping off at one end of the mounting portion 23, and a drop-off prevention member 26 at the other end of the mounting portion 23. It has the attachment part 24 and is integrally molded from a resin material. The mounting portion 23 is manufactured so that the outer diameter of the handle cover 25 is substantially the same as the inner diameter of the handle cover 25 so that the handle cover 25 can be stably attached. The handle cover 25 is attached in close contact with the mounting portion 23. It is done.

  The mounting portion 24 is provided on the handle bottom side of the mounting portion 23, and all of the mounting portion 24 is located inside the handle cover 25 attached to the mounting portion 23. The cross section of the mounting portion 24 is smaller than the cross section of the mounting portion 23, and the mounting portion 24 is inserted into the recess of the dropout prevention member 26. Although not shown, a part of the attachment portion 24 may be positioned on the handle cover 25 attached to the mounting portion 23, and the rear end surface may protrude from the handle cover 25. This is because it only needs to be fixed by the dropout prevention member 26.

  The cross section of the base part 22 is larger than the cross section of the mounting part 23, and the base part 22 has a contact surface (not shown) with which the end face on the blade side of the handle cover 25 contacts at the boundary with the mounting part 23. The contact surface of the base part 22 and the end face of the handle cover 25 are formed in the same shape, and there is almost no step between the base part 22 and the handle cover 25, and the handle or bar has a uniform thickness from the base part 22. .

  The drop-off prevention member 26 functions as a so-called cap that prevents the handle cover 25 attached to the handle body 21 from falling off the handle body 21. The fall-off prevention member 26 has a recess 27 into which the handle bottom portion 26a that is positioned on the handle bottom side from the handle cover 25 and becomes the handle bottom after fitting and the attachment portion 24 are fitted. The wall 26 b forming the recess 27 is inserted into the gap between the inner surface of the handle cover 25 and the peripheral surface of the mounting portion 24, so that the drop-off preventing member 26 is attached to the handle body 21. The drop-off prevention member 26 has a contact surface 26c with which the handle bottom side end surface of the handle cover 25 contacts the handle bottom portion 26a. The cross-section of the handle bottom portion 26a and the end surface of the handle cover 25 are formed in the same shape, and there is almost no step between the handle cover 25 and the handle bottom portion 26a, and the thickness is uniform. As a result, the thickness of the entire pattern 20 is uniform by being hung from the base part 22 through the pattern cover 25 to the pattern bottom part 26a.

  In the knife 1 of the present invention, the blade body 10 is integrated with the handle body 21 by insert molding, and the core 12 is embedded in the handle body 21. FIG. 2 shows a state in which the core 12 is inserted to the middle of the mounting portion 23. However, as long as the core 12 is firmly fixed to the handle body 21, the insertion length is not limited. However, it is determined in consideration of the overall balance such as the length and weight of the blade 11 and the length of the handle 20. Moreover, although the blade body 10 in which the core 12 and the blade body 11 are integrally manufactured without a joint is preferably used, the blade body 10 in which the blade body 11 is joined to the core 12 by welding or the like can also be used.

  The knife 1 of the present invention is manufactured by the following steps. First, the core 12 of the blade body 10 is inserted into the cavity of the mold and insert molding is performed to produce the handle body 21 provided with the blade body 10. Next, the pattern cover 25 is attached to the pattern body 21. At this time, the mounting portion 23 may be inserted into the handle cover 25, and the bonding between the mounting portion 23 and the handle cover 25 is not necessarily required. However, when there is a lot of so-called play between the mounting portion 23 and the handle cover 25, the both may be bonded and fixed. Then, the recess 27 of the drop-off prevention member 26 is fitted into the attachment portion 24 of the handle body 21, and the wall 26 b forming the recess 27 and the attachment portion 24 are adhered and fixed to prevent the drop-off prevention member 26 from falling off, thereby the handle cover 25 Suppress movements.

  As described above, the kitchen knife 1 of the present invention has a structure in which the handle body 21 with the core 12 inserted therein is formed of a resin material, and a metal handle cover 25 is attached to the handle body 21. Therefore, the handle cover 25 that is a part touched by the hand may be manufactured from a cylindrical member, and can be easily manufactured even if hygienic aluminum or the like is used. Moreover, since the handle cover 25 is cylindrical, it is easy to manufacture the handle cover 25 having a polygonal cross section. In particular, since the blade body 10 is integrally formed with the handle body 21 by insert molding, there is no concern about insufficient strength of the joint, and the knife 1 is provided with a combination of the blade body 10 and the handle 20 made of a different material. . Thereby, even if it is the kitchen knife 1 in which the handle 20 used aluminum, the sharpness similar to a steel kitchen knife is ensured. Moreover, since the pattern cover 25 can be manufactured with a small amount of steel, the material cost is reduced and the pattern cover 25 can be manufactured at a low cost. Then, the knife 1 of the present invention has a handle cover 25 attached to the handle body 21 in which the blade body 10 is integrated by insert molding, and a drop-off preventing member 26 is inserted into the gap between the handle body 21 and the handle cover 25. Since it has a structure that prevents the 25 from falling off, it can be assembled without screwing, and the manufacturing process is extremely simple. Thus, the knife 1 of the present invention can be manufactured easily and inexpensively even if it is a knife 1 using sanitary aluminum in a portion to be grasped by hand, and has a polygonal cross section that is easy to hold in the hand. 20 can be manufactured without difficulty.

  According to the present invention, a hygienic knife with excellent operability is provided at a low cost by a simple manufacturing process.

DESCRIPTION OF SYMBOLS 1 Knife 10 Blade 11 Blade body 12 Core 20 Handle 21 Handle body 22 Base part 23 Mounting part 24 Mounting part 25 Handle cover 26 Drop-off prevention member 26a Handle bottom part

Claims (4)

A blade body having a blade and a core, a cylindrical metal handle cover, a handle main body to which the handle cover is attached, and a drop prevention member for preventing the handle cover from dropping off,
The handle body includes a mounting portion to which the inner surface of the handle cover is attached in close contact, a base portion that prevents the handle cover from falling off at one end of the mounting portion, and the drop-off preventing member at the other end of the mounting portion. The attachment part to which is attached is integrally molded from a resin material,
The drop-off prevention member has a recess for inserting the mounting portion, and a wall forming the recess is inserted into a gap between the peripheral surface of the mounting portion and the inner surface of the handle cover,
A knife in which the core is insert-molded in the handle body.   The kitchen knife according to claim 1, wherein the drop-off prevention member is bonded and fixed to the attachment portion.   The knife according to claim 1 or 2, wherein the handle cover is made of aluminum.   The knife according to any one of claims 1 to 3, wherein the handle cover has a polygonal frame having a horizontal upper side in a cross section.

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