JP2003071747A - Knife with handle and assembling method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply position a cutting edge member 1 and a grip handle 2 when assembling them. SOLUTION: When a handle part 4 of the cutting edge member 1 is inserted into a hollow part 20 of the grip handle 2 from a mouth part 19, both elastic arm parts 13, 14 of the handle part 4 abut on both guide regulation parts 22, 23 of the grip handle 2 during the insertion. After that, while both elastic arm parts 13, 14 are bent on a bend space 16 side against an elastic force and are brought into pressure-contact with both guide regulation parts 22, 23, both end fringe parts 11, 12 of the handle part 4 are guided by both guide regulation parts 22, 23. When both locking parts 9, 10 of the handle part 4 abut on an external wall 18 in the mouth part 19 of the grip handle 2 to prevent the insertion of the handle part 4 for the grip handle 2, both end fringe parts 11, 12 of the handle part 4 are in a connection condition along both guide regulation parts 22, 23 of the grip handle 2 to bring both elastic arm parts 13, 14 of the handle part 4 into pressure-contact with both guide regulation parts 22, 23 and apply the handle part 4 to an inner face of the mouth part 19 so that the grip handle 2 is positioned for the handle part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual instrument (knives, knives, scissors, etc.) provided with a blade member having a blade and a grip handle connected to a handle provided on the blade member, and a medical device. And a method of assembling the grip handle to the handle portion of the blade member.

[0002]

2. Description of the Related Art Conventionally, in the knife disclosed in Japanese Patent Laid-Open No. 7-284576, when the handle portion 3 is assembled to the core 22 of the blade 2, the core 22 of the blade 2 is mounted as shown in the drawing of the publication. The handle portion 3 is inserted through the opening 32, and the engaging portion 23 of the core 22 is engaged with the hole 31 of the handle portion 3.

[0003]

However, since the engaging portion 23 of the core 22 cannot be seen from the outside of the handle portion 3 when the core 22 of the blade 2 is inserted into the handle portion 3, this problem is solved. It is difficult to insert the joint portion 23 into the hole 31 of the handle portion 3, and it is difficult to position them when the handle portion 3 is assembled to the blade 2.

According to the present invention, a grip handle (corresponding to the handle portion 3) for a blade member (corresponding to the blade 2) in a blade.
The purpose is to easily position them when assembling.

[0005]

Means for Solving the Problems and Effects of the Invention Drawings of an embodiment described later (first embodiment shown in FIGS. 1 to 4, second embodiment shown in FIGS. 5 to 6 and third embodiment shown in FIGS. 7 to 8). The present invention will be described with reference to the reference numerals of (form).

Invention of Claim 1 (corresponding to all the embodiments) The handle blade according to the present invention is configured as follows. This knife with handle has a blade member (1) having a blade body (3) and a grip handle (2) connected to a handle portion (4) provided on the blade member (1). The blade member (1)
The handle part (4) of the flexible part (13, 14, 27, 28, 2
9) is provided. A hollow part (20) having a mouth part (19) is formed in the outer wall (18) of the grip handle (2). In a connected state in which the handle portion (4) is inserted into the hollow portion (20) of the grip handle (2) from the mouth portion (19),
Flexible parts (13, 14, 27, 28, 2) of the handle part (4)
9) is pressed against the inner surface of the outer wall (18), and the blade member (1)
The grip handle (2) is held on the.

In the present invention, the handle (4) is connected to the mouth (19).
From the flexible part (13,
14, 27, 28, 29) can be pressed against the inner surface of the outer wall (18) to hold the grip handle (2) on the blade member (1). Therefore, when assembling the grip handle (2) to the blade member (1), their positioning can be easily performed.

* Invention of Claim 2 (corresponding to all embodiments) This invention is configured as follows on the premise of the invention of Claim 1. In the grip handle (2), the outer wall (1
8) the inner surface of the flexible portion (13, 14, 27, 28,
29) The guide restricting portion (the abdominal guide restricting portion 22, the back guide restricting portion 2) that guides 29) from the mouth portion (19) into the hollow portion (20).
3) is extended. In this invention, the flexible portion (13, 1
4, 27, 28, 29) are guided while being pressed against the guide restricting portions (22, 23), and the handle portion (4) is hollow (2).
0). Therefore, when assembling the grip handle (2) to the blade member (1), their positioning can be performed more easily and reliably.

* Invention of claim 3 (corresponding to all the embodiments) This invention is configured as follows on the premise of the invention of claim 2. In the connected state of the grip handle (2) to the handle portion (4) of the blade member (1), the flexible portion (13, 14, 2).
7, 28, 29) including the handle portion (4) edge portion (11, 1)
2) was made to follow the guide regulation part (22, 23) of the grip handle (2). According to the present invention, when assembling the grip handle (2) to the blade member (1), their positioning can be performed more reliably.

* Invention of Claim 4 (corresponding to all embodiments) This invention is configured as follows on the premise of the invention of Claim 2 or Claim 3.

The grip handle (2) has a pair of side plates (24).
Both polymerized portions (2
5) are fixed to each other by welding or the like. The guide restricting portions (22, 23) of the grip handle (2) are
The hollow portion (20) in the both side plates (24) has the above-mentioned overlapping portion (2).
5) The inside of the hollow part (20) is formed inside the part (19)
From the mouth (19) to the opposite side (2
It is extended toward 1). In the present invention, the guide restricting portions (22, 23) of the grip handle (2) can be easily formed.

* Invention of claim 5 (corresponding to all embodiments) This invention is configured as follows on the premise of the invention of any one of claims 1 to 4.

The grip handle (2) is fixed to the blade member (1) at the mouth portion (19) of the grip handle (2) so that the grip member (2) is held by the blade member (1). I chose For example,
On the handle (4), the mouth (19) of the grip handle (2) is attached to the outer wall (1
8) is provided with locking portions (9, 10) that prevent the handle (4) from being inserted into the handle (2), and the outer wall (18) of the handle (2) is attached to the blade member (1). It is fixed by welding or rivets. According to the present invention, when assembling the grip handle (2) to the blade member (1), their positioning can be performed more reliably.

* Invention of claim 6 (corresponding to the first embodiment and the second embodiment) This invention is configured as follows on the premise of the invention of any one of claims 1 to 5. Has been done.

The flexible portion is an elastic arm portion (13, 14, 27) formed in a cantilever shape. For example, the elastic arm portions (13, 14, 27) are provided on the grip handle (2), and the abdominal guide regulating portion (22) and the dorsal guide which are extended to face each other on the inner surface of the outer wall (18). It has elasticity that bends in the direction connecting to the restriction portion (23). According to the present invention, the structure of the flexible portion is simplified.

* Claim 7 invention (corresponding only to the first embodiment) This invention is configured as follows on the premise of the invention of claim 6. The elastic arm portions (13, 14) are formed in a bifurcated shape at the tip of the handle portion (4) to form a bending space (16).
Are juxtaposed to each other through the outer wall (18) of the grip handle (2)
When pressed against the inner surface of the flexible space (1
6) Bend to the side. For example, an elastic arm (13,
14) is integrally formed. According to the present invention, the structure of the flexible portion is simplified.

* Claim 8 invention (corresponding only to the second embodiment) This invention is configured as follows based on the invention of claim 6. The elastic arm portion (27) has a handle portion (4).
Is formed in the shape of a cantilever having the free end as the tip end. For example, the elastic arm portion (27) is integrally formed with the handle portion (4). According to the present invention, the structure of the flexible portion is simplified.

* Invention of claim 9 (corresponding only to the third embodiment) This invention is configured as follows on the premise of the invention of any one of claims 1 to 5.

The flexible portion is an elastic arm portion (28, 29) formed in a doubly supported beam shape. For example, the elastic arm portions (28, 29) are provided on the grip handle (2) and the outer wall (1
The abdominal side guide regulation portion (2) which is extended so as to face each other on the inner surface of 8).
2) has elasticity to bend in the direction connecting the back side guide regulating portion (23). According to the present invention, the structure of the flexible portion is simplified.

* Invention of claim 10 (corresponding only to the third embodiment) This invention is configured as follows on the premise of the invention of claim 9. The elastic arm portions (28, 29) include a ventral side edge portion (11) and a back side edge portion (12) of the handle portion (4).
Then, they are juxtaposed to each other through the bending space (30), and when pressed against the inner surface of the outer wall (18) of the grip handle (2), they bend to the bending space (30) side against the elastic force. In this invention, since the elastic arm portions (28, 29) are integrally formed with the handle portion (4), the structure of the flexible portion is simplified.

* Invention of claim 11 (corresponding to all the embodiments) In the method of assembling a blade with handle according to the present invention, the handle portion (4) provided on the blade member (1) having the blade body (3). ), The grip handle (2) is assembled as follows.

A pair of side plates (24) forming the grip handle (2) is molded. Both edge portions (24a) of both side plates (24) are polymerized with each other and the both polymerized portions (25) are fixed to each other by welding or the like. Both sides after fixing (24)
In the inner hollow part (20) of the both superposed parts (25), from the mouth part (19) of the hollow part (20) to the mouth part (1).
9) The guide restricting portions (22, 23) having a concave shape are formed so as to extend toward the bottom portion (21) on the opposite side to 9). When inserting the handle portion (4) of the blade member (1) into the hollow portion (20) of the grip handle (2) from the mouth portion (19), both guide regulating portions (22, 23) guides both edge portions (11, 12) of the handle portion (4). afterwards,
Both edge portions (11, 12) of the handle (4) are brought into pressure contact with both guide restricting portions (22, 23) of the handle (2), and the handle (2) is attached to the handle (4). Position. After that, the grip (2) is further attached to the blade member (1) at the mouth (19).
It may be fixed by welding or the like.

In the present invention, the guide restricting portions (22, 23) of the grip handle (2) can be easily formed, and their positioning can be performed when the grip handle (2) is assembled to the blade member (1). It can be done easily.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION First, a blade according to a first embodiment of the present invention will be described with reference to FIGS.

This knife is a knife or knife,
As shown in FIG. 1, a blade member 1 and a grip handle 2 formed of metal are provided. The blade member 1 includes a blade body 3 and a handle portion 4 formed integrally with the blade body 3. In this blade body 3, the abdomen 7 extends from the tip 5 to the jaw 6.
The cutting edge 7a is extended to the back side and the back portion 8 is extended on the opposite side of the abdominal portion 7. At the base end of the handle portion 4, a stepped abdominal side engaging portion 9 continuous with the abdomen portion 7 of the blade body 3 and a back portion 8 of the blade body 3 at a boundary portion with the jaw portion 6 of the blade body 3. And a step-like back side engaging portion 10 is formed. The abdominal side edge portion 1 extends from the abdominal side engaging portion 9 to the tip of the handle portion 4.
1 extends, and a dorsal side edge 12 extends from the dorsal side locking portion 10 to the tip of the handle portion 4. Bifurcated elastic arms 13 and 14 are formed at the tip of the handle 4. Both elastic arms 13,
14 is a bending space 16 opened to both side surfaces 15 of the handle 4.
Are formed in a cantilever shape and have elasticity, and are juxtaposed to each other between the abdominal side edge portion 11 and the dorsal side edge portion 12 via the bending space 16. The interval between the abdominal end edge 11 and the back end edge 12 is gradually narrowed from the base end of the handle 4 toward the tip.

When manufacturing the blade member 1, first, the material (not shown) of the blade body 3 and the handle portion 4 is integrally molded by a press, and the press-molded material is heat-treated. Next, in the heat-treated material, from the boundary portion indicated by the alternate long and short dash line in the portion that becomes the jaw portion 6 of the blade body 3, the blade body 3
The thickness of the blade 3 extends from the back 8 to the abdomen 7 over the tip 5 of the blade.
Slip grinding is performed on both side surfaces 17 of the blade body 3 so as to become thinner toward the edge of the blade body 3.

A hollow portion 20 having a mouth portion 19 is formed in the outer wall 18 of the grip handle 2 as shown in FIG. The part 20 is closed. On the inner surface of the outer wall 18 of the grip handle 2, as shown in FIG.
Both guide restricting portions 22 and 23 having a and 23a extend from the mouth portion 19 toward the hip portion 21 so as to face each other on the abdominal side and the back side. The interval between the abdominal guide restricting portion 22 and the back guide restricting portion 23 is gradually narrowed from the mouth portion 19 toward the hip portion 21. The distance between the inner surfaces of the mouth portion 19 facing both side surfaces 15 of the handle portion 4 of the blade member 1 is substantially equal to the thickness between the both side surfaces 15. Although not shown, in both of the guide restricting portions 22 and 23,
The recesses 22a and 23a may be omitted, and the inner surface of the outer wall 18 is gently extended in a curved shape so that the distance between the guide restricting portions 22 and 23 becomes larger than both sides thereof and becomes maximum. Good. In that case, the ventral side edge portion 11 and the back side edge portion 12 of the handle 4 are regulated by the two guide regulation portions 22, 23 having no recesses 22a, 23a.

When manufacturing the grip handle 2, first, the side plate 24 constituting the grip handle 2 is draw-formed as shown in FIG. 4 (a), and both edge portions 24a of the draw-formed side plate 24 are set at one point. Trim at the chain line. Next, both end edges 24a of the trimmed side plates 24 are overlapped with each other as shown in FIG. 4B, and although not shown, the overlapped portions 25 are welded from the outside and fixed to each other. After that, both welded overlapping portions 25 are polished from the outside as shown in FIG. 4 (c).
Inside the polished overlapping portions 25, the guide regulating portions 22 and 23 having a concave cross section are formed by welding.

The blade member 1 and the grip handle 2 manufactured as described above are assembled with each other as follows. When the handle portion 4 of the blade member 1 is inserted into the hollow portion 20 of the grip handle 2 through the mouth portion 19 from the tip end side thereof, the ventral end of the ventral elastic arm portion 13 of the handle portion 4 is inserted during the insertion. Edge 1
1 and the back edge 12 of the back elastic arm 14 abut on the guide restricting portions 22 and 23 of the grip handle 2. Thereafter, the elastic arms 13 and 14 are bent against the elastic force of the flexible space 1
Both end edge portions 11 and 12 of the handle portion 4 are guided by the both guide regulating portions 22 and 23 while being bent to the 6 side and being pressed against the both guide regulating portions 22 and 23. When the ventral side locking portion 9 and the back side locking portion 10 of the handle portion 4 come into contact with the outer wall 18 at the mouth portion 19 of the grip handle 2 to prevent the handle portion 4 from being inserted into the handle shaft 2, Both edge portions 11 and 12 of 4 are in a connected state along both guide regulation portions 22 and 23 of the grip handle 2. In the connected state, the elastic arm portions 13 and 14 of the handle portion 4 are pressed against the guide restricting portions 22 and 23, and the handle portion 4 is applied to the inner surface of the mouth portion 19 so that the handle portion 4 is attached to the handle portion 4. The grip handle 2 is positioned. Next, from the outside of the mouth portion 19 to the outer wall 1 of the grip handle 2.
8 and the jaw 6 of the blade are welded and the welded portion is ground. Further, a cutting edge 7a is formed on the abdomen 7 of the blade body 3.

Next, the blade according to the second embodiment of the present invention will be described with reference to FIGS.
Will be described with reference to. A constricted portion 26 is formed near the tip of the handle 4, and an elastic arm 27 is provided between the constricted portion 26 and the tip to form a cantilever with the tip of the handle 4 as a free end. Is formed in. When the handle portion 4 of the blade member 1 is inserted into the hollow portion 20 of the grip handle 2 from the mouth portion 19 from the tip end side thereof, the elastic arm portion 27 of the handle portion 4 is inserted during the insertion.
The abdominal edge portion 11 and the dorsal edge portion 12 contact the guide restricting portions 22 and 23 of the grip handle 2. After that, the elastic arm portion 27 bends against the elastic force and both guide regulating portions 2
While being pressed against 2,2, both edge portions 1 of the handle portion 4
1, 12 are guided by the two guide restricting portions 22, 23.

Next, the blade according to the third embodiment of the present invention will be described with reference to FIGS.
Will be described with reference to. Elastic arms 28 and 29 (flexible portions) are formed in a doubly supported beam shape on the handle portion 4 at the abdominal end edge 11 side and the back end edge portion side 12 near the tip end thereof, respectively. . The elastic arms 28 and 29 are arranged side by side at the abdominal edge 11 and the dorsal edge 12 of the handle 4 with a bending space 30 interposed therebetween. When the handle portion 4 of the blade member 1 is inserted from the tip end side thereof into the hollow portion 20 of the grip handle 2 through the mouth portion 19, the ventral end edge portion of the ventral elastic arm portion 28 of the handle portion 4 is inserted during the insertion. 11 and the back end edge 12 of the back elastic arm 29 abuts on both guide restricting portions 22 and 23 of the grip handle 2. Thereafter, the elastic arms 28 and 29 are bent toward the bending space 30 against the elastic force and pressed against the guide restricting portions 22 and 23, while the edge portions 11 and 12 of the handle portion 4 are It is guided by both of the guide regulation portions 22 and 23.

[Brief description of drawings]

FIG. 1A is a front view showing a blade member and a grip handle in an exploded manner in a kitchen knife according to a first embodiment, and FIG.
FIG. 4 is a front view of the same in which the blade member and the grip handle are assembled together.

FIG. 2A is a cross-sectional view of the connection state of the grip handle to the handle portion of the blade member seen from the front side in FIG. 1B, and FIG. It is sectional drawing which looked at the connection state from the plane side.

FIG. 3 is an enlarged cross-sectional view taken along line XX of FIG.

FIG. 4 is a cross-sectional view showing a manufacturing process of the grip handle.

FIG. 5A is a front view showing a blade member and a grip handle in an exploded manner in a kitchen knife according to a second embodiment, and FIG.
FIG. 5 is a cross-sectional view of a state in which the grip handle is connected to the handle portion of the blade member when the blade member and the grip handle are assembled from the front side.

6 is an enlarged cross-sectional view taken along line YY of FIG. 5 (b).

FIG. 7 is an enlarged cross-sectional view taken along line ZZ of FIG. 8B described later.

FIG. 8A is a front view showing a blade member and a grip handle in an exploded manner in the kitchen knife according to the third embodiment, and FIG.
FIG. 5 is a cross-sectional view of a state in which the grip handle is connected to the handle portion of the blade member when the blade member and the grip handle are assembled from the front side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Blade member, 2 ... Grip handle, 3 ... Blade body, 4 ... Handle part, 13,
14 ... Elastic arm part (flexible part), 16 ... Bending space, 18 ... Outer wall, 19 ... Mouth part, 20 ... Hollow part, 22, 23 ... Guide regulation part, 24 ... Side plate, 24a ... Edge part, 25 ... Overlap, 27
... elastic arm (flexible part), 28, 29 ... elastic arm (flexible part), 30 ... bending space.

Claims (11)

[Claims] 1. A handle blade having a blade member having a blade body and a grip handle connected to a handle portion provided on the blade member, wherein a flexible portion is provided on the handle portion of the blade member. A hollow portion having a mouth portion is formed in the outer wall of the grip handle,
In a connected state in which the handle portion is inserted into the hollow portion of the grip handle from the mouth portion, the flexible portion of the handle portion is pressed against the inner surface of the outer wall,
A bladed tool with a handle, characterized in that the blade member holds a gripping handle. 2. The handle blade according to claim 1, wherein a guide restriction portion is provided on the inner surface of the outer wall of the grip handle to guide the flexible portion from the mouth portion into the hollow portion. . 3. The grip handle handle is connected to the handle portion of the blade member, wherein the edge portion of the handle portion including the flexible portion is aligned with the guide restricting portion of the handle handle. Cutlery with a handle. 4. The grip handle is formed by fixing both overlapping portions of the pair of side plates, where both end edge portions are overlapped with each other, and the guide restricting portion of the grip handle is a hollow portion in both side plates. 4. The method according to claim 2 or 3, wherein the overlapping portions are formed inside the overlapping portions and extend from the mouth portion of the hollow portion toward the hip portion opposite to the mouth portion. Cutlery with a handle. 5. The grip handle is fixed to the blade member at the mouth portion of the grip handle so as to hold the grip handle on the blade member. The patterned blade according to any one of claims. 6. The flexible arm is an elastic arm formed in the shape of a cantilever.
A handle with a handle according to any one of claims. 7. The elastic arms are formed in a bifurcated shape at the tip of the handle and are juxtaposed to each other via a bending space, and when the gripping handle is pressed against the inner surface of the outer wall of the handle, the elastic arms bend against the elastic force. The handle blade according to claim 6, which is bent toward the space side. 8. The handle blade according to claim 6, wherein the elastic arm portion is formed in a cantilever shape with a tip end portion of the handle portion being a free end portion. 9. The flexible arm is an elastic arm formed in a doubly supported beam shape.
A handle with a handle according to any one of claims. 10. The elastic arm portions are arranged side by side at a ventral side edge portion and a back side edge portion of the handle portion with a bending space therebetween, and are elastically pressed when the gripping handle is pressed against the inner surface of the outer wall of the handle handle. The handled blade according to claim 9, wherein the bladed blade bends to the side of the bending space. 11. A method of assembling a blade with a handle, comprising a blade member having a blade body and a grip handle connected to a handle provided on the blade member, wherein a pair of side plates constituting the grip handle is provided. After molding, the both end edges of the both side plates are polymerized with each other and the both polymerized parts are fixed to each other, so that in the hollow part in the both side plates after the fixation, inside the both polymerized parts, the mouth part of the hollow part is formed. From this, when forming a concave guide restricting portion extending toward the hip portion on the opposite side to the mouth portion, when inserting the handle portion of the blade member into the hollow portion of the grip handle from the mouth portion, The two guide restricting portions of the grip handle guide both end edge portions of the handle portion, and thereafter, both end edge parts of the handle portion are brought into pressure contact with the two guide restricting portions of the grip handle so that the grip handle is attached to the handle portion. A method of assembling a blade with a handle, characterized by positioning.