JPS6282990A - Blade replaceable type knife - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a replaceable blade type kitchen knife.

(Prior Art) In a conventional kitchen knife, the handle and the blade body are connected and fixed by a core formed integrally with the blade body.

(Problems to be Solved by the Invention) The present invention allows only the blade to be removed from the handle to make the blade disposable, or to replace only the blade by attaching a blade for a different purpose to the handle. It is based on new ideas that can be developed.

Structure of the Invention (Means for Solving the Problems) This invention has been made to solve the above problems, and includes a metal core protruding from one end of the handle, and a metal core protruding from one end of the handle, and a metal core protruding from one end of the handle. This is provided with a +Oi joint that can be fitted into and removed from the core metal.

(Function) With the above means, the blade body and handle can be easily removed and attached by fitting and disengaging the metal core protruding from the handle and the fitting portion provided on the blade body.

(Example) Hereinafter, an example embodying this invention will be shown in Figs. 1 to 3.
This will be explained according to the diagram.

1 in the drawing is a handle made of synthetic resin and has a circular cross section.
A core metal 2 having a substantially rhombic cross section is protruded from one end surface, and the core metal 2 is formed to be slightly thicker at its base end. Reference numeral 3 denotes a blade body connected to the core metal 2, and as shown in FIG. 3, on the side opposite to the cutting edge 5, holding pieces 4 are formed by bending outwards on both left and right sides at four locations alternately. The fitting portion 6 is constituted by the above.

The blade body 3 is removably tightly fitted into the fitting hole 6a formed between the presser pieces 4 adjacent to each other by inserting the core bar 2 from the proximal end side. Reference numeral 7 denotes a through hole cut out in the front part of the presser piece 4, and the tip of the through hole 7a at the most distal end is brought into contact with the tip end surface of the core bar 2.

Now, the operation of the replaceable blade type kitchen knife configured as described above will be explained.

In this embodiment, the holding piece 4 of the fitting part 6 provided on the side opposite to the cutting edge 5 of the blade body 3 clamps the core metal 2 protruding from the handle 1, so that the blade body 3 and the handle is connected to. If the blade body 3 is held down and the handle 1 is pulled in the direction in which they are separated from each other, the fitting portion 6 and the core bar 2 are removed, and the blade body 3 and the handle 1 are easily separated.

Conversely, when the core metal 2 of the handle 1 is fitted into the fitting part 6 of the blade body 3, the metal core 2 is again clamped by the holding piece 4 of the fitting part 6,
The handle 1 and the blade body 3 can be easily connected.

In addition, the fitting part 6 is connected to the opposite cutting edge 5 of the blade body 3 as shown in FIG.
Since the presser pieces 4 provided on the sides are bulged outward on both the left and right sides, the cut food can be peeled off smoothly.

(Second Embodiment) Next, only the portions of the second embodiment that are different from the first embodiment will be described with reference to FIGS. 4 to 6.

In this embodiment, the core metal 10 protruding from one end surface of the handle 1 has a substantially inverted triangular cross section, and is slightly thicker at the base end and has a guide surface 11 at the tip. The tip of the core metal 10 is slightly pointed. Further, the side edge of the blade body 12 opposite to the cutting edge 13 is slightly smaller than the core metal 10 and is bent into a substantially inverted triangular cross section, as shown in FIGS. 5 and 6.
The fitting portion 14 includes a fitting hole 14a into which the core metal 10 can be fitted.

In this embodiment, the fitting part 14 provided on the side opposite to the cutting edge 13 of the blade body 12 is slightly expanded by the core metal 10 against its own elasticity, and the core metal 10 is tightly fitted by the entire inner surface of the fitting part 14. However, the blade body 12 and handle 1 are connected. Note that since a guide surface 11 is provided at the tip of the core bar 10, the fitting portion 14
On the other hand, it is easier to insert the core metal 10.

Other effects are similar to those of the first embodiment.

(Third Embodiment) Next, a third embodiment will be described according to FIGS. 7 to 10.

In this embodiment, the core metal 17 protruding from one end surface of the handle 1 has a cross-sectional model as shown in FIG. There is.

A tapered surface 18 similar to that of the second embodiment is provided at the tip of the core metal 17. As shown in FIG. 10, a notch 19a is formed on the opposite side of the blade 19 from the vicinity of the tip to the base end according to the shape of the metal core 17. A fitting member 21 as a fitting part is formed in the notch 19a from a material different from the blade body 19, and has a fitting hole 21a into which the core metal 17 is tightly fitted in a detachable manner. It is fixed so as to sandwich the back side of the body 19.

In this embodiment, the core metal 17 is tightly fitted by the inner surface of the fitting part 21 fixed to the side opposite to the cutting edge 20 of the blade body 19, and the blade body 1
9 and handle 1 are connected. In addition, since concave surfaces are provided on both sides of the core bar 17, when downward force is applied when cutting hard foods, the HL and fit between the core bar 17 and the fitting hole 21a become more solid. Even if the handle 1 is pulled toward the user, the core metal 17 and the blade body 19 are not disconnected from each other.

Other effects are similar to those of the first embodiment.

(Fourth Example) Next, a fourth example will be described with reference to FIGS. 11 to 13.

In this embodiment, from one end surface of the handle 24, as shown in FIG.
As shown in a), a core metal 25 with a 7-shaped cross section is provided in a protruding manner. The lower part of the core bar 25 is shown in FIG. 13(a).
As shown in FIG. 2, the surface on the side that comes into contact with the double-edged blade body 28 is bulged in the longitudinal direction to form a bulged portion 27. Further, the bulging portion 27 is provided on the side opposite to the cutting edge 29 of the blade body 28.
A recess 30 that can be fitted and removed is provided. Said blade body 28
In the lower part of the recessed part 30, there is a protrusion 3 toward the bulged part 27 side.
1 protrudes and is adapted to lock the lower part of the bulged portion 27.

In this embodiment, the bulging portion 27 of the core metal 25 and the blade body 28 are
Since the recess 30 is tightly fitted, the blade body 28 will not come off downward.

In addition, as a modification of this embodiment, the blade body may be of a single-edged type.

In this case, as shown in FIG. 13(b), in the single-edged type blade 34, the part corresponding to the protrusion 31 is omitted and only the recess 35 is provided so that the right side surface of the blade 34 is flush. There is.

(Fifth Example) Next, a fifth example will be described with reference to FIGS. 14 to 16.

In this embodiment, the core metal 39 protruding from one end surface of the handle 38 has a wedge-shaped cross section, and a guide surface 39a similar to the guide surface 11 described in the second embodiment is provided at the tip. There is. In addition, there are through holes 4 at a predetermined distance from each other at a position slightly from the center of the double-edged type blade body 40 and closer to the cutting edge 41.
2 are arranged in five locations on a straight line extending from the tip to the base of the blade body 40. As shown in FIG. 16<a>, a step is formed at a position near the cutting edge 41 of the through-holes 42 arranged in the - row by being bent toward the side that contacts the core metal 39.

A fitting member 43 as a fitting portion made of synthetic resin is provided on the back side of the blade body 40 on the side that comes into contact with the core metal 39. A mounting protrusion 44 is protruded from the lower part of the fitting member 43, which has a "shaped" cross section, and when the mounting protrusion 44 is fitted into the through hole 42, the fitting member 43 is attached to the blade body 40. The upper part of the fitting member 43 is a clamping part 45 that clamps the core bar 39.
A wedge-shaped fitting hole 46, which is slightly smaller than the core metal 39, is formed between the blade body 4o and the blade body 4o.

In this embodiment, when the blade 30 is inserted into the fitting hole 46 of the core metal 39 from the base end side, the clamping part 45 of the fitting member 43 resists its own elasticity and expands slightly toward the blade 40 side. Open it and sandwich the core bar 39. This connects the blade 40 to the handle 38.

In addition, as a modification of this embodiment, the blade body may be of a single-edged type.

In this case, as shown in FIG. 16(b), in the case of the single-edged type blade 39, no step is provided on the lower side of the through hole 42 so that the right side of the blade 49 is flush. .

(Sixth Embodiment) Next, a sixth embodiment will be described with reference to FIGS. 17 to 19.

In this embodiment, as shown in FIGS. 18 and 19, from one end surface of the handle 53, a core metal 54 having a trapezoidal cross section is
The concentric bar 54 is formed to be wide at the proximal end and tapered toward the distal end. Further, the core metal 5 is provided on the side opposite to the cutting edge 56 of the blade body 55.
A fitting member 58 having a fitting recess 57 corresponding to 4 is welded to form a fitting part. And the fitting member 5
8 and the blade body 55, the core metal 54 is removably tightly fitted. In addition, five drain holes are provided in the center of the fitting member 58 so as to be arranged in a straight line at a predetermined interval from each other.

In this embodiment, since the core metal 54 is formed to be wide at the base end, the fitting recess 57 of the attachment member 58 is attached to the core metal 54.
It is sure to be a tight fit with the inner surface of the Since the tip of the core bar 54 is sharp, it can be easily fitted into the fitting portion formed by the fitting member 58.

(Seventh Example) Next, a seventh example will be described with reference to FIGS. 20 to 23.

In this embodiment, as shown in FIG. 22, a groove 623 is vertically cut in the center of the tip surface of the handle 62, and the base end of a blade 67, which will be described later, is engaged therewith. And the circumferential groove 6
Projecting from the left side of 2a is a core bar 63 which has a trapezoidal cross section and is wide at its base end, similar to the sixth embodiment. A locking recess 64 serving as a locking portion is provided in the center of one side of the core bar 63 near the proximal end.

A guide groove 65 is recessed from the locking recess 64 to the vicinity of the tip of the core bar 63 and parallel to the upper surface of the core bar 63 .

The cutting edge 68 of the blade body 67 connected to the core metal 63 is formed to have the same radius of curvature from its tip to its base.

Further, on the side opposite to the cutting edge 68, the core bar 6 having the same shape as the embodiment described above is provided.
A fitting member 70 having a [1 recess 69 corresponding to No. 3] is cured and welded in the longitudinal direction of the blade body 67 to form a fitting portion. When the core bar 63 is sandwiched between the fitting member 70 and the blade body 67, the proximal end position of the fitting member 70 corresponding to the locking recess 64 is engaged with the four locking parts 64. A matching locking protrusion 71 is provided.

The upper, lower and base ends of the locking protrusion 71 in FIG. 20 are cut out in an inverted U-shape to provide an elastic portion 71a.

In this embodiment, the core metal 63 is connected to the fitting member 70 and the blade body 6.
7, the locking protrusion 71 easily engages with the locking recess 64 through the guide groove 65, and the handle 62 and blade body 67 are connected.

At this time, the locking protrusion 71 is attached to the elastic portion 71a in the locking recess 64.
The core metal 63 and the blade body 67 are firmly connected due to their elasticity. Conversely, if the handle 62 is pulled apart from each other by applying an appropriate force from the blade 67, the locking protrusion 71 is removed from the locking recess 64 against the elasticity of the elastic portion 71a. At this time, the locking protrusion 71 is disengaged from the core metal 63 via the guide groove 65, and the connection between the handle 62 and the blade body 67 is removed.

Note that the present invention is not limited to the above-mentioned embodiments, and can be arbitrarily modified without departing from the spirit of the present invention.

Effects of the Invention As detailed above, in the present invention, the blade body and the handle can be easily removed by fitting and separating the metal core protruding from the handle and the fitting portion provided on the blade body. It has the excellent effect of being able to be replaced with a different type of blade or disposable if its sharpness is lost.

[Brief explanation of drawings]

Figures 1 to 3 show the first embodiment, Figure 1 is a perspective view of the entire replaceable blade knife, Figure 2 is a perspective view showing the blade and handle separated, and Figure 3 is a perspective view of the knife with the blade removed. A sectional view taken along the line A-A in Fig. 1, Figs. 4 to 6 show the second embodiment, Fig. 4 is an overall perspective view of the 8-blade knife, and Fig. 5 shows the relationship between the blade body and handle. FIG. 6 is a sectional view taken along line B-8 in FIG. 4, FIGS. 7 to 10 show the third embodiment, and FIG. 7 is an overall perspective view of the replaceable blade knife. , Fig. 8 is a perspective view showing the separated state of the blade body and handle, Fig. 9 is a sectional view taken along line c-c' in Fig. 7, Fig. 10 is a front view of the replaceable blade knife, and Fig. 11 is Fig. 13 shows the fourth embodiment, Fig. 11 is an overall perspective view of the replaceable blade type kitchen knife, Fig. 12 is a perspective view showing the separated state of the blade and handle, and Fig. 13 (a) is the 11th embodiment. 13(b) is a sectional view of the main part of a single-edged type replaceable blade type kitchen knife, FIGS. 14 to 16 show the fifth embodiment, and FIG. 14 shows a static knife. FIG. 15 is an overall perspective view of the blade-type kitchen knife, and FIG. 16 is a perspective view showing a separated state of the blade and handle.
) is a sectional view taken along the line E-E' in Fig. 14, and Fig. 16 (
b't is a cross-sectional view of the main part of the blade in a single-edged type replaceable blade knife, FIGS. 17 to 19 show the sixth embodiment, FIG. 17 is an overall perspective view of the replaceable blade knife, and FIG. The figure is a perspective view showing the separated state of the blade and handle, Figure 19 is a sectional view taken along the line F-F'' in Figure 17, Figures 20 to 23 show the seventh embodiment, and Figure 20 is Fig. 21 is a front view of the handle and core metal, Fig. 22 is a plan view of the handle and core metal, and Fig. 23 is a sectional view of the main parts of the blade of the replaceable blade knife. Yes. Handle 1.24.38.53, 62, core metal 2.10°17.
25.39, 54.63. Blade body 3, 12° 19.28.
34, 40.49.55.67, fitting part 6, 14, 21
, 30.31, 43.58°70, cutting edge 5.13, 20
,29.41.56゜68゜

Claims (1)

[Claims] 1. A core metal (2, 10, 17, 25, 39, 54, 63) is provided protruding from one end of the handle (1, 24, 38, 53, 62), and a blade body (3, 12, 19, 28, 34, 40, 49, 5
5, 67) opposite cutting edge (5, 13, 20, 29, 41, 5
On the 6, 68) side, there are fitting parts (6, 14, 21, 30, 31, 35, 43) that can be fitted and removed with the core metal (2, 10, etc.).
, 58, 70). 2. The fitting portions (30, 31, 43, 58, 70) are connected to the opposite cutting edge (28, 34, 40, 49, 55, 67) of the blade body (28, 34, 40, 49, 55, 67).
29, 41, 56, 68) The replaceable blade type kitchen knife according to claim 1, which is provided on the side part. 3. A locking portion (71) is provided at the base end of the fitting portion (70) to lock the core bar (63) by utilizing the elastic force of the base end due to the uneven relationship. The replaceable blade type kitchen knife according to claim 1 or 2, which is a knife according to claim 1 or 2. 4. The cutting edge (68) is formed with the same radius of curvature from its tip to its base.
The replaceable blade type kitchen knife according to any one of Items 1 to 3.