JP4084845B2 - Kitchen knife and manufacturing method thereof - Google Patents

Description

The present invention relates to a kitchen knife used for general household or business use and a method for manufacturing the knife.

  Traditionally, kitchen knives have been used to cut ingredients during cooking, but especially when cutting ingredients that contain a lot of moisture, the cut ingredients are in close contact with the blade plate surface of the kitchen knife, making it difficult to perform cutting operations. It was.

In order to improve this, a knife having a hole in the blade plate surface, a protrusion provided from the handle side to the cutting edge side of the knife plate surface ( Patent Document 1), or a blade plate surface is provided. A plastic raw material is injected into the hole, and an adhesion prevention tool is integrally formed on the blade plate surface by heat molding ( Patent Document 2), a plurality of convex portions and a plurality of convex stripe portions that are shaped patterns on the blade plate surface, etc. Provided ( Patent Document 3), a guide member to be separated from the blade plate surface by magnetic force ( Patent Documents 4 and 5), a blade plate surface with a vinyl adhesive tape or a side surface with a clip A rectangular plate that is gently curved is attached as an auxiliary tool for a kitchen knife ( Patent Document 6), a hole is provided in the blade plate surface, and the surface of the synthetic resin plate that is in close contact with the blade plate surface using this hole those having a large number of irregularities (Patent Document 7), a blade plate surface by rolling treated steel The embossed pattern of irregularities formed on the surface, then there is such as those processed in knives (Patent Document 8).

JP-A-11-300060 JP 11-076441 JP-A-11-042376 JP 07-299260 A JP 2002-000970 A JP2005-021537 JP 2001-293266 A JP 2003-190669 A

  There are several conventional methods for improving the separation of kitchen knives, but none of them are satisfactory in terms of effectiveness, hygiene and production costs.

  When a hole is made in the blade plate surface of a kitchen knife, it is necessary to increase the plate thickness in order to impair the strength of the blade plate surface, thereby obstructing the cutting that is the original function of the knife, and forming a hole. However, the press requires a mold and the manufacturing cost is high, and further, the cut residue of the food tends to adhere to the inner surface of the hole, and once it gets dirty, it does not easily fall off, so there is a problem in terms of hygiene.

  The one provided with a ridge portion from the handle side to the cutting edge side of the blade plate surface obstructs the notch that is the original function of the knife, and the one that uses the press to form the protrusion is a mold. However, there is a method of hammering by using a hammer, which increases the manufacturing cost. However, this also has a problem that the cost increases.

Injecting plastic raw material into the hole on the blade plate surface and molding the anti-adhesion tool on the blade plate surface by heat molding increases the thickness of the knife, thereby hindering the notch that is the original function of the knife. End up . In addition, there is a problem in terms of hygiene because a waste of cutting material enters the gap between the blade plate surface and the adhesion prevention tool during use and cannot be removed . In addition, there is a problem that the adhesion prevention tool comes off during use.

  If the blade plate surface is provided with a plurality of convex parts that are shaped patterns and a plurality of ridges, etc., this will impede cutting, which is the original function of a knife, and press to form protrusions According to the method, a mold is required and the manufacturing cost is high, and there is a method of hammering by a hammer, but this also has a problem that the cost is high.

  If the guide member that is separated from the blade plate surface is attached magnetically, it will interfere with the notch that is the original function of the knife, and the gap between the blade plate surface and the anti-adhesion tool will be lost during use. Ingredients such as cut pieces of food are contained and there is a problem with hygiene, and there is a problem that even a strong magnet may be displaced or dropped during use.

  The one with a vinyl adhesive tape on the blade surface obstructs the notch that is the original function of a kitchen knife. There is also a problem.

  A rectangular plate with a clip that has a gently curved side surface attached as an auxiliary tool for a kitchen knife has a problem that it cannot withstand continuous use because it is displaced or detached during use.

  If a hole is provided on the blade plate surface and a number of irregularities are provided on the surface of the synthetic resin plate that is in close contact with the blade plate surface using this hole, the synthetic resin plate obstructs the notch that is the original function of the knife. In addition, scraps of foods easily adhere to the gap between the blade plate surface and the synthetic resin plate, and once it gets dirty, it does not fall off easily, so there is a problem with hygiene. Also, the synthetic resin plate is in use There are inconveniences such as removal, and the uneven portions provided on the surface portion of the synthetic resin plate are worn out and lose the separation effect.

  Forming uneven embossed pattern on the surface of the steel sheet that will be the blade plate surface by roll rolling process, then processed into a knife, it is necessary to form the uneven embossed pattern on the roll according to the rolling mill, once formed The pattern cannot be easily changed, and there is a limit to making a fine pattern on the roll, which increases the cost in terms of equipment. Also, an uneven embossed pattern is created on the surface of the steel plate in the previous process. Therefore, when the longitudinal section is processed into a wedge shape, the unevenness of the embossed pattern of the unevenness becomes smaller as it goes to the blade edge, and in some cases, it is lost and there is a problem that the separation effect is lost.

  SUMMARY OF THE INVENTION Accordingly, the present invention aims to provide a kitchen knife that finds these problems in the conventional method and solves these problems and has excellent detachability.

The invention of claim 1 is a knife having a handle portion and a blade plate portion, and a plurality of protrusions disposed on the blade plate surface of the blade plate portion, wherein the plurality of protrusions are blades formed by etching. The outer diameter is 1.0 to 4.0 mm, the height is 0.15 to 0.35 mm, and the distance between the front and rear, left and right adjacent to each other is 2.0 to 10.0 mm. A knife that is inside and whose top is polished and chamfered.

The invention of claim 2 is a method of manufacturing a kitchen knife having a handle portion and a blade plate portion, and a large number of protrusions disposed on the blade plate surface of the blade plate portion, wherein the multiple protrusions are etched. The blade plate surface is dug down by machining, the outer diameter is 1.0 to 4.0 mm, the height is 0.15 to 0.35 mm, and the distance between the front and rear, left and right adjacent to each other is within the range of 2.0 to 10.0 mm. A knife manufacturing method for manufacturing the kitchen knife according to claim 1 by polishing and chamfering the top of a large number of projections formed so as to remain.

According to the kitchen knife of the first aspect of the present invention, since the protrusion is disposed on the blade plate surface, the top of the protrusion having a small area comes into contact with the sliced vegetable, so that the sliced vegetable does not adhere.
Further, according to the knife of the first aspect of the present invention, since the protrusion is integrally formed on the blade plate surface, there is no inconvenience such as detachment during use unlike the case where another object is attached.
According to the knife of the first aspect of the invention, the outer diameter and height of the projections arranged on the blade plate surface, and the interval between the projections adjacent to the front, rear, left and right are made to correspond to the plate thickness of the knife within the above range. By selecting and determining experimentally, it is possible to reduce the area where the sliced vegetables come into contact with the protrusions, and the separation effect is surely obtained.
According to the knife of the first aspect of the invention, since the structure for improving the separation is composed of small projections, washing and wiping after using the knife can be easily and reliably performed, and the projections are the blade surface. Since it is formed integrally, there is no place for the waste of food to enter, and this point is also hygienic.
According to the kitchen knife of the first aspect of the present invention, the projection is formed by digging up the periphery by etching, and does not require an expensive mold or the like, so that the production quantity is at least an arbitrary shape. Can be made inexpensively. Further, by polishing and chamfering the corners of the top of the protrusions, the area in contact with the sliced vegetables can be further reduced, so that the peeling effect is increased and the separation property is improved.
According to the kitchen knife of the first aspect of the present invention, as described above, the effect that the sliced vegetables do not adhere to the kitchen knife can be obtained.

According to the manufacturing method of the kitchen knife of the invention according to claim 2, the large number of protrusions are formed by digging up the periphery thereof by etching, and an expensive mold or the like is not required. However, it is possible to produce at least an arbitrarily shaped protrusion at a low cost. After forming the protrusions by etching, the knife touches the corners of the top of the protrusions and chamfers to further reduce the area that comes into contact with sliced vegetables, increasing the peeling effect and improving the detachability. Can be manufactured.

  Embodiments of the present invention will be described below with reference to FIGS.

As an example , an example in which an etching process is used based on a direct die cutting method of a conventional kitchen knife manufacturing method will be described .
First, a steel plate is punched into the knife outline with a press, and a rivet hole is made in the core . Next, the punched knife steel plate is quenched and strain-removed , and further cut with an automatic grinding machine so that the longitudinal section of the blade plate is wedge-shaped as shown in FIG . So far , it is the same as the conventional kitchen knife manufacturing method .
Turning now to the unique process of the present invention, as shown in FIG. 2, the blade plate 5mm up to peaks 4 the width of the edge 6 of the B, a number from the inner edge of the edge 6 up to the 10mm inward from the cutting edge 1 The protrusion 5 is formed by etching. When the plate thickness at the position of 10 mm from the blade edge 1 is 0.6 mm, the height of the protrusion 5 is 0.25 mm, the outer diameter is 1.5 mm, and the distance between the front, rear, left and right of the protrusion 5 is 3 mm. The object 5 is disposed by etching as shown in FIGS. 2 and 3 (b) .
The dimensions of the projection 5 at this time slightly change depending on the thickness and size of the food to be sliced. Therefore, the dimension of the projection 5 is determined by determining which side the greatest common divisor of the food is placed . Next, the corner of the top 5-a of the protrusion 5 is polished with a squallite foil or a file and chamfered (up to here, the unique process of the present invention) .
The following enters the same finishing process as the conventional knife manufacturing method . That is, a water knife , a blade, and a handle are sequentially applied to complete the knife .
In the above etching process, when changing the dimensions of the projection 5 in various experiments, the pattern original cost is so low that it does not compare with the die cost of the press. The original plate can be used semi-permanently, and the etching process temperature is as low as 40 to 60 degrees, so that there is no influence of heat on the workpiece.

The figure which showed the arrangement | positioning state of the protrusion of one Example of this invention The figure which showed the state which provided the edge in the peak of other one Example of this invention. (a) is a longitudinal sectional view of the blade plate portion of one embodiment of the present invention , (b) is an enlarged view of the x portion of (a)

Explanation of symbols

A Handle portion B Blade plate portion 1 Blade edge 2 Blade plate surface 2-a Surface position of blade plate surface 3 Cut edge 4 Peak 5 Projection 5-a Head 6 Edge

Claims (2)

A knife having a handle portion and a blade plate portion, and a large number of protrusions disposed on the blade plate surface of the blade plate portion, the multiple protrusions remaining formed by digging down the blade plate surface by etching. The outer diameter is 1.0 to 4.0 mm, the height is 0.15 to 0.35 mm, the distance between the front, rear, left and right adjacent to each other is within the range of 2.0 to 10.0 mm, and A knife whose top is polished and chamfered. A method of manufacturing a knife having a handle portion and a blade plate portion, wherein a number of protrusions are disposed on the blade plate surface of the blade plate portion, and the blade plate surface is dug down by etching the plurality of protrusions. The outer diameter is 1.0 to 4.0 mm, the height is 0.15 to 0.35 mm, and the gap between the front and rear, left and right adjacent to each other is in the range of 2.0 to 10.0 mm, Furthermore, the kitchen knife manufacturing method which manufactures the kitchen knife of Claim 1 by grind | polishing and chamfering the top of many protrusions formed.

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