JPH0144347B2 - - Google Patents

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. This is based on a novel idea, and in particular, it simplifies the structure for attaching and detaching the blade from the handle.

Structure of the Invention (Means for Solving the Problems) This invention has been made to solve the above-mentioned problems, and includes a core bar protruding from one end of the handle in the longitudinal direction of the handle. The metal is formed so that it becomes thicker toward the base end, and a fitting portion is provided on the side opposite to the cutting edge of the blade body, and is capable of being engaged with and detached from the core metal, which is inserted in the longitudinal direction from the base end side of the blade body. is provided along the back of the blade.

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

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 3.

In the drawing, reference numeral 1 denotes a handle made of synthetic resin, which has a circular cross section, and a core metal 2 having a roughly rhombic cross section protrudes from one end surface, and the core metal 2 becomes slightly thicker toward the base end. It is formed. 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 the left and right sides at four locations alternately. The fitting part 6
is configured.

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 metal 2 from the base 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 comes into contact with the tip end surface of the core metal 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 Pattern 1
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, if the core metal 2 of the handle 1 is fitted into the fitting part 6 of the blade body 3, the core metal 2 is again held by the holding piece 4 of the fitting part 6.
are clamped, and the handle 1 and blade body 3 can be easily connected.

In addition, as shown in Fig. 3, the fitting part 6 has a presser piece 4 provided on the side opposite to the cutting edge 5 of the blade body 3 that bulges outward on both the left and right sides, so that the cut food can be peeled off smoothly. I can do it.

(Second Embodiment) Next, only the parts 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 bar 10 protruding from one end surface of the handle 1 has a substantially inverted triangular cross section, and is slightly thicker toward the base end, and a guide surface 11 is provided at the distal end. The tip of Gold 10 is slightly sharp. Also, the side edge of the blade body 12 opposite to the cutting edge 13 is the fifth
As shown in the drawings and FIG. 6, the fitting portion 14 is slightly smaller than the metal core 10 and is bent to have a substantially inverted triangular cross section, and has a fitting hole 14a into which the metal core 10 can be inserted.

In this embodiment, the fitting part 14 provided on the side opposite to the cutting edge 13 of the blade body 12 expands slightly due to the core metal 10 against its own elasticity, and the entire inner surface of the fitting part 14 holds the core metal 10. The blade body 12 and handle 1 are tightly fitted and connected. Note that a guide surface 1 is provided at the tip of the core bar 10.
1 is provided, the core metal 1 is connected to the fitting part 14.
0 is easier to insert.

Other effects are similar to those of the first embodiment.

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

In this embodiment, the core metal 17 protruding from one end surface of the handle 1 has a wedge-shaped cross section as shown in FIG.
A is provided. 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. And the notch 19a
A fitting member 21 as a fitting portion is formed of a material different from the blade body 19 and has a fitting hole 21a into which the core metal 17 is tightly fitted so that the core metal 17 can be detached from the blade body 19. It is fixed in a pinched manner.

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 19, and the blade 19 and the 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 fit between the core bar 17 and the fitting hole 21a becomes more secure, Even if you pull the handle 1 toward you, the core metal 17 and blade body 19
It cannot be disconnected from the connection.

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, a core metal 25 having a 7-shaped cross section is provided protruding from one end surface of the handle 24, as shown in FIG. 13a. As shown in FIG. 13a, the lower part of the core bar 25 is bulged in the longitudinal direction on the side that comes into contact with the double-edged blade 28 to form a bulge 27. Further, on the side of the blade body 28 opposite to the cutting edge 29, a recess 30 is provided as a fitting portion which can be fitted into and removed from the bulged portion 27. Said blade body 2
8, a protrusion 31 protrudes from the lower part of the recess 30 toward the bulge 27, and is adapted to lock the lower part of the bulge 27.

In this embodiment, since the protrusion 27 of the core metal 25 and the recess 30 of the blade body 28 are tightly fitted, the blade body 28
does not separate 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. 13b, in the single-edge 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.

(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, five through holes 42 are formed at a predetermined distance from each other at positions slightly opposite to the cutting edge 41 from the center of the double-edged type blade 40, and are lined up in a straight line extending from the tip to the base of the blade 40. There is. As shown in FIG. 16a, a step is formed at a position near the cutting edge 41 of the through-holes 42 arranged in a row by bending it 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 serves as a clamping part 45 for clamping 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 40 and the blade body 40.

In this embodiment, when the blade 30 is inserted into the fitting hole 46 from the proximal end of the core metal 39, the clamping part 45 of the fitting member 43 expands slightly toward the opposite side of the blade 40 against its own elasticity. and clamp it to 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. 16b, in the single-edged type blade 39, no step is provided below the through hole 42 so that the right side surface of the blade 49 is flush with the other side.

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

In this embodiment, a core bar 54 having a trapezoidal cross section is protruded from one end surface of the handle 53, as shown in FIGS. 18 and 19, and the core bar 54 is formed wider toward the base end. It is formed in a shape that tapers toward the tip. Further, a clamping member 58 having a fitting recess 57 corresponding to the core bar 54 is closely attached to the side opposite to the cutting edge 56 of the blade body 55.
A fitting part is formed. And the fitting member 58
The core metal 54 is removably tightly fitted between the blade body 55 and the blade body 55. In addition, drain holes 59 are provided in the center of the clamping member 58 so as to be arranged in a straight line at a predetermined distance from each other.

In this embodiment, since the core bar 54 is formed wider toward the proximal end, the core bar 54 and the fitting member 58
The inner surface of the fitting recess 57 is reliably and tightly fitted. Since the tip of the core metal 54 is sharp, it can be easily fitted into the fitting portion formed by the fitting member 58.

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

In this embodiment, as shown in FIG.
A groove 62a is vertically cut in the center of the two tip surfaces, and a base end of a blade body 67, which will be described later, is engaged with the groove 62a. A core bar 63 is protruded from the left side of the groove 62a and has a trapezoidal cross section and is wider toward the 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 with the same radius of curvature from its tip to its base. Further, on the side opposite to the cutting edge 68, there is a clamping recess 69 corresponding to the core metal 63 having the same shape as in the embodiment described above.
A clamping member 70 having a fitting member 70 is welded along the longitudinal direction of the blade body 67 to form a fitting portion. When the core bar 63 is clamped between the fitting member 70 and the blade 67, the locking recess 64 is located at the base end position of the fitting member 70 corresponding to the locking recess 64. A locking protrusion 71 that engages with 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 bar 63 is attached to the fitting member 70.
If the locking protrusion 71 is inserted into the fitting portion consisting of the blade body 67 and the blade body 67, the locking protrusion 71 will easily fit into the locking recess 6 through the guide groove 65.
4, and the handle 62 and blade body 67 are connected.
At this time, the locking protrusion 71 is strongly engaged with the locking recess 64 due to the elasticity of the elastic portion 71a, and the core metal 63 and the blade body 67 are reliably connected. 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 separates 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, the present invention has a simple structure consisting of only a core metal and a blade body, and when the core metal is inserted into the fitting part of the blade body from the proximal side, the blade body and the core metal are tightly connected. The fitting handle and blade body can be easily connected, and conversely, if you hold the blade body and pull the handles in the direction of separating them from each other, the core bar will come off from the fitting part of the blade body, making it easy to connect the handle and blade body. It has the excellent effect of being able to be separated and easily 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 replaceable blade knife, and Fig. 5 shows the relationship between the blade body and handle. A perspective view showing the separated state; FIG. 6 is a sectional view taken along line B-B' in FIG. 4;
Figures 7 to 10 show the third embodiment, Figure 7 is an overall perspective view of the replaceable blade type knife, Figure 8 is a perspective view showing the separated state of the blade and handle, and Figure 9 is the A sectional view taken along the line C-C' in Fig. 7, Fig. 10 a front view of the replaceable blade type knife, and Figs. 11 to 13 show the fourth embodiment.
Fig. 11 is an overall perspective view of the replaceable blade knife, Fig. 12 is a perspective view showing the separated state of the blade and handle, and Fig. 13a.
is a sectional view taken along the line D-D′ in FIG. 11, FIG. 13b is a sectional view of the main part of a single-edged type replaceable blade knife, and FIGS. 14 to 16 show the fifth embodiment,
Fig. 14 is an overall perspective view of the replaceable blade knife, Fig. 15 is a perspective view showing the separated state of the blade and handle, and Fig. 16a.
is a sectional view taken along line E-E' in Fig. 14, Fig. 16b
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, No. 19
The figure is a sectional view taken along the line F-F' in Figure 17, Figures 20 to 23 show the seventh embodiment, Figure 20 is a front view of the replaceable blade type knife, and Figure 21 is a cross-sectional view of the handle and core metal. The front view, Figure 22 is also a plan view of the handle and core, Figure 23
The figure is a sectional view of the main part of the blade of the replaceable knife. Handle…1, 24, 38, 53, 62, core…2,
10, 17, 25, 39, 54, 63, blade body...
3, 12, 19, 28, 34, 40, 49, 5
5, 67, fitting part...6, 14, 21, 30, 3
1, 43, 58, 70, cutting edge...5, 13, 20,
29, 41, 56, 68.

Claims (1)

[Claims] 1. From one end of the handle 1, 24, 38, 53, 62 in the longitudinal direction of the handle 1, 24, etc.
25, 39, 54, 63 are protruded, and concentric metals 2, 1
The blades 3, 12, 19, 28, 34, 40, etc. are formed to be thicker toward the base end.
49, 55, 67 opposite cutting edge 5, 13, 20, 2
On the 9, 41, 56, and 68 sides, the core metal 2 is inserted into the blade body 3, 12, etc. from the base end side in the longitudinal direction.
Fitting parts 6, 14, 21, which can be fitted and separated with 10 etc.
30, 31, 35, 43, 58, 70 as blade body 3,
A replaceable blade type knife characterized by a 12th grade knife provided along the back plate. 2. A patent claim in which the fitting portions 30, 31, 43, 58, 70 are provided on the side of the blade body 28, 34, 40, 49, 55, 67 opposite to the cutting edge 29, 41, 56, 68. The replaceable blade knife described in item 1. 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 relationship of projections and recesses. The replaceable blade type kitchen knife according to any one of item 1 or item 2 of the range. 4. The replaceable blade type kitchen knife according to any one of claims 1 to 3, wherein the cutting edge 68 is formed with the same radius of curvature from its tip to its base.