JP2912829B2 - Spare blade case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a replaceable blade case for a scissor having a replaceable blade body.

[0002]

2. Description of the Related Art In recent years, medical institutions have started to have problems with the management of medical equipment due to a shortage of nurses and the preparation of equipment before and after surgery. In order to solve such a problem, the present applicant has already proposed a scissor which can easily replace the blade of the scissor having a reduced cutting before and after the operation. In this scissor, a blade body is detachably attached to the tip of a handle. This makes it possible to easily replace the blade body of the scissors with reduced cutting. In addition, when replacing a blade having a reduced cutting, particularly during surgery, the blade can be quickly replaced with a new blade.

[0003]

However, at the operation site, a spare scissor is usually prepared. However, for example, the cutting of the blade is reduced, or the blade is chipped for some reason during the operation, so that the spare is required. When the scissors run out, the blades may need to be replaced as needed. To meet this need, there is a need for a scissor that can be replaced more quickly with a new blade during surgery.

[0004] In addition, it is necessary to perform maintenance such as resharpening a new scissor before replacement and a scissor with reduced cutting after replacement. The maintenance of the scissors may be neglected as a result. Alternatively, there is also a problem that a large burden is imposed on nurses and the like in order to perform maintenance and management.

Accordingly, the present invention has been made in view of such problems existing in the prior art, and an object of the present invention is to make it possible to more quickly replace a blade with a reduced cutting edge with a new blade. An object of the present invention is to provide a replaceable blade case that can reduce the burden on maintenance and maintenance personnel such as resharpening.

[0006]

Of claim 1 the invention SUMMARY OF THE INVENTION, the main body case provided blade clamping portion for clamped the blade is blade, the blade clamping portion recess or convex the parts provided, the blade clamping portion is detachably engaged in a concavo-convex relationship with respect to the blade, concave
The convex relationship is the lengthwise direction of the blade body in front of the body case.
This is a relationship that regulates movement, and is the width direction of the upper blade body
The point is that it is possible to escape.

[0007] The invention of claim 2 is based on claim 1,
The blade body holding portion can be engaged with a concave portion provided on the blade body.
The gist is that a convex portion is provided. The invention of claim 3 is
3. The blade body holding portion according to claim 1 or 2, wherein the blade body holding portion includes a holding piece.
The clamping piece has elasticity in the clamping direction of the blade.
Make a summary.

[0008]

According to the first aspect of the present invention, the blade body is engaged with the blade body holding portion in an uneven relationship. Also, due to the relationship between
When the movement of the blade body to the front of the main body case is restricted,
In addition, the blade body can be pulled out upward. In this engaged state, the blade is attached to the handle or the blade is removed from the handle without touching the blade.

According to the invention of claim 2, according to claim 1
In addition to the effect of the invention of the invention, the concave and convex parts are
Engagable. According to the invention of claim 3, claim 1
Or in addition to the operation of the invention described in 2 above, the blade body and the holding piece are engaged.
In this state, the blade body is
It is pressed in the clamping direction.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a spare blade case of a surgical scissor will be described below with reference to FIGS.

First, the scissors 1 will be described. As shown in FIG. 1, a scissor 1 has a pair of grips 2 pivotally mounted on a support shaft 3, and a blade body individually detachably attached to a tip of the grip 2 via a detachment mechanism 20. 4.

As shown in FIGS. 2 to 5, when the handles 2 are closed at the tips of both handles 2, projecting strips 5 are provided on the surfaces facing each other. This ridge 5 is divided into approximately two equal parts in the longitudinal direction, and a first ridge 5 a located on the tip side of the handle 2 and the handle 2 are formed.
And a second protruding ridge 5b located on the base end side.

As shown in FIGS. 2 and 5, the first ridge 5a
Are located at the lower ends of both edges in the longitudinal direction, and the groove 6 is in concave contact. The second ridge 5b is provided continuously with the first ridge 5a. The connecting portion of the ridge 5b with the first ridge 5a is provided slightly narrower than the maximum width of the first ridge 5a.
The second ridge 5b is provided with a tapered portion 22 so that the width thereof gradually increases from the distal end to the proximal end. Are provided in parallel. Also, arcuate locking recesses 7 are formed on both sides of the base end of the second ridge 5b. Further, as shown in FIGS. 2 and 4, when the handle 2 is closed near one of the locking recesses 7, a projection 8 protrudes along the surfaces facing each other. An engagement recess 10 is provided between the inner surface 9 and the inner surface 9.

As shown in FIGS. 1 and 4, the blade body 4 is curved in the thickness direction from near the center in the length direction to the tip. That is, the scissor 1 of the present embodiment uses a Cooper-type blade 4. A forked portion 11 is formed at the base end of the blade body 4. Engagement projections 13 (three in this embodiment) are formed on the outer surface of the blade body 4 on the tip side of the forked portion 11 so as to protrude in the thickness direction of the blade body 4. The engagement protrusion 13 extends in the width direction of the blade body 4, and the tip of the engagement protrusion 13 is formed to be curved. Each of the engagement protrusions 13 is separated at a predetermined interval, and a pair of engagement grooves 13a is formed between each of the engagement protrusions 13. The engagement groove 13a on the distal end side of the blade body 4 is deeper than the engagement groove 13a on the base end side of the blade body 4.

The forked portion 11 is provided with a groove 14 extending in the length direction of the blade 4. This groove 14 is the first groove 1
4a and a second groove 14b, as shown in FIG.
When the blade body 4 is mounted on the handle 2, the first groove 14a engages with the first ridge 5a, and the second groove 14b engages with the second ridge 5b. As shown in FIGS. 2 and 5, a dovetail 15 is formed at the lower end inside the first groove 14a. Further, the second groove 14b is formed slightly larger than the first ridge 5a, and as shown in FIG.
b can be engaged with the first ridge 5a from above (upper surface in the paper).

When the second groove 14b is engaged with the first ridge 5a from above and moves in the direction of arrow A, the dovetail 15 is slidable with respect to the dovetail groove 6. Second groove 14b
A pair of projections 1 projecting in the directions facing each other
6 are provided, and the interval between the two protrusions 16 is slightly larger than the minimum width of the second protrusion 5b, and is slightly smaller than the maximum width. As a result, as shown in FIG.
When the protrusion 4b is engaged with the first ridge 5A from above and moves in the direction of arrow A, the two protrusions 16 are pressed in the direction of opening in the width direction of the second ridge 5b against their own elastic force. While moving. That is, the blade body 4 can be removed from the handle 2 by pulling out the blade body 4 in the direction opposite to the arrow.

Next, the replacement blade case will be described with reference to FIGS. As shown in FIGS. 6, 7 and 9, the main body case 25 includes a blade body mounting case 26 for mounting a new blade body 4 before use, and a blade body 4 having a reduced cutting after use.
And a blade body mounting lid 27 for mounting the same. Further, the blade body mounting case 26 and the blade body mounting lid 27 are made of synthetic resin, and in this embodiment, have a heat resistance of 100 ° C. or more,
Polycarbonate with chemical resistance is used.

The blade body mounting case 26 is formed in a box-like shape with a lid, and the blade body mounting lid 27 is fitted so as to cover the opening on the lower surface thereof. The two members 26 and 27 are non-detachably fixed by an adhesive. In FIG. 6, the vertical direction in the drawing is the front-back direction of the main body case 25, and the horizontal direction in the drawing in FIG. 6 is the left-right direction of the main case 25.

First, the blade mounting case 26 will be described. The front end of the blade mounting case 26 is formed in an arc shape. A step 26a is formed in the upper part of the blade body mounting case 26 from near the center in the front-rear direction to the rear end, and a support 28 having a substantially rectangular parallelepiped shape is formed above the step 26a so as to protrude upward. The left side surface of the support body 28 is curved in the front-rear direction, and the radius of curvature is substantially the same as the radius of curvature of the blade body 4.

The blade mounting case 26 is provided on the upper surface of the step portion 26a.
A pair of holding pieces 29 extending in the front-rear direction are integrally formed, and the holding pieces 29 are cantilevered by a base 29 a erected on the blade body mounting case 26. The holding piece 29 has an elastic force in a direction for holding the blade body 4, that is, in the left-right direction of the blade body mounting case 26. Blade body pressing portions 30a and 30b are formed to protrude from the inner surface of the distal end of each holding piece 29,
The tip end surfaces of the blade holding portions 30a and 30b are arranged to face each other. The support body 28, the holding piece 29, and the blade body holding parts 30a, 30b constitute a blade body holding part.

The right blade holder 30a in FIG.
Is slightly longer in the left-right direction than the left blade holding portion 30b. The distal end surfaces of the blade holding portions 30a and 30b are spaced apart from the left and right side surfaces of the support 28 by a predetermined distance. In addition, the left blade holding part 3
The leading end surface of Oa is curved in the front-rear direction, and its radius of curvature is substantially the same as the radius of curvature of the blade 4. And
When the blade 4 is inserted between the support 28 and the blade holder 30a or between the support 28 and the blade holder 30b, the side surface of the blade 4 becomes the blade holder 30a, 30b. Is pressed by the front end surface of the.

A pair of engaging projections 31 are formed on the tip end surface of the blade body holding portion 30a and the right side surface of the support 28 so as to protrude rightward. The engagement protrusion 31 has a substantially side trapezoidal shape and extends vertically. The engagement projection 31 is the blade body 4
Can be engaged with the inside of the engagement groove 13a. When the blade body 4 is inserted between the support body 28 and the blade body holding portions 30a and 30b, the elasticity of the holding piece 29 is kept in a state where the engagement protrusion 31 and the engagement groove 13a are engaged. The distal end surfaces of the blade holding portions 30a and 30b are pressed against the side surfaces of the blade 4 by the force.

A step 26a between the sandwiching pieces 29
A pair of attachment plates 32a and 32b are formed on the upper surface of the upper surface to protrude upward. The left side surface of the right attachment plate 32a is disposed so as to be substantially at the same position as the distal end surface of the holding portion 30a. Also, the left side surface of the left attachment plate 32b is
The support 28 is disposed at substantially the same position as the left side surface. Then, the support 28 and the blade holder 30
When the blade 4 is inserted between the blades 4a and 3b, the right side of the base end of the blade 4 abuts against the left side of each of the attachment plates 32a and 32b, and the rightward movement is restricted. .

A step 2 is provided on the upper surface of the blade mounting case 26.
A pair of narrow grooves 33 extending forward from the boundary of 6a is formed. The two narrow grooves 33 are arranged in a plane inverted C shape, and the interval between the two narrow grooves 33 becomes longer toward the front. Narrow groove 3
A substantially rectangular insertion port 34 is provided through the upper surface of the blade body mounting case 26 at the front end of the third blade 3. The leading end of the blade body 4 can be inserted into the insertion port 34 and the narrow groove 33.

A pair of insertion openings 38 are formed in the rear end surface of the blade mounting case 26 through the rear end surface. The insertion port 38 communicates with the inside of the blade body mounting case 26. The blade body 4 is inserted into the insertion opening 38 along the front-rear direction of the blade body mounting case 26.

Next, the blade mounting lid 27 will be described.
A substantially rectangular parallelepiped support 35 is provided on the upper surface of the blade mounting lid 27.
Are formed to protrude. A step 35 a is formed on the right side of the front end of the support 35. Positioning protrusions 36a and 36b are formed on the upper surface of the blade body mounting cover 27 near the left and right sides of the front end of the support 35.

An engagement projection 37 is formed on the right side surface of the left positioning projection 36b and the step portion 35a so as to protrude rightward. The engagement protrusion 37 has a substantially side trapezoidal shape and extends vertically. The engagement protrusion 37 is provided in the engagement groove 13 of the blade body 4.
a can be engaged. And the support 3
When it is sandwiched between the positioning projections 36a and 36b, the engagement projection 37 and the engagement groove 13a are engaged.

Next, a method of replacing the blade 4 attached to the scissor 1 using the main body case 25 configured as described above will be described. Before the blade body 4 is replaced, the blade body mounting case 26 has the pair of blade bodies 4 engaged with the engagement grooves 13a and the engagement protrusions 31, respectively.
Shall be attached.

In the above state, the user opens the handle 2 of the scissor 1 and inserts one blade 4 into the blade mounting case 26 through one insertion opening 38. In this embodiment, the blade body 4 is inserted from the right insertion slot 38. When the blade body 4 is inserted first through the right insertion opening 38, the side surface of the blade body 4 having the engagement protrusion 13 is directed to the left, and the blade body 4 is bent rightward from the blade body 4. insert.

By this insertion, the tip of the blade body 4 is inserted between the positioning projection 36a and the support 35. Then
The user pushes the handle 2 forward of the blade mounting case 26 against the elasticity of the positioning protrusion 36a. By this pushing, the engagement protrusion 37 is engaged in the engagement groove 13 a of the blade body 4. By this engagement, the movement of the blade body 4 in the front-back or left-right direction is restricted.

Then, the user grips the handle 2 and pulls out the scissor 1 in the direction opposite to the blade body mounting case 26. Then, the projection 16 of the blade body 4 is disengaged from the locking recess 7 of the handle 2, and the tip of the projection 16 slides on the side surface of the parallel portion 21. At the same time, the dovetail 15 of the blade body 4 is slid with respect to the dovetail groove 6 of the handle 2. And
As shown in FIG. 3, the protrusion 16 is formed of the first and second ridges 5.
When located near the boundary between a and 5b, the engagement between the dovetail 15 and the dovetail groove 6 is released. The grip 2 and the blade body 4 are separated from each other by the disengagement of the two 6 and 15. In this state, if the user pulls out only the handle 2 from the insertion opening 38 of the blade body mounting case 26, only the used blade body 4 having a reduced cutting remains in the blade body mounting case 26.

Next, the user inserts the blade body 4 into the left insertion slot 38 in the same manner as the blade body 4 is inserted into the right insertion slot 38. The scissors 1 are turned over so that the side of 4 is located on the left side. After the blade body 4 is inserted into the blade body mounting case 26, the blade body 4 having a reduced cutting is pulled out from the handle 2 as described above, and only the blade body 4 remains in the blade body mounting case 26.

Next, a method of attaching a new blade 4 to the tip of the handle 2 will be described. The user grips the handle 2 and inserts the handle 2 into the blade body 4 so that the dovetail 15 and the dovetail groove 6 engage with each other. In the operation of this embodiment, first, the right blade 4 is attached to the tip of the handle 2. Further, the user pushes the handle 2 forward of the blade body mounting case 26.
By this pushing, the dovetail 15 of the blade body 4 is slid with respect to the dovetail groove 6 of the handle 2. Further, when the protrusion 16 of the blade 4 is located near the boundary between the first and second protrusions 5a and 5b of the handle 2, the protrusion 16 slides on the side surface of the second protrusion 5b. Be moved. And the protrusion 16 is the blade body mounting case 2
6, the distance between the opposing protrusions 16 increases as the position moves forward.

The tip of the bifurcated portion 11 is most widened by the parallel portion 21 of the second ridge 5b against its own elastic force, and inward at a position beyond the parallel portion 21 by the elastic force. Narrowed. By this action, the protrusion 16 is engaged in the locking recess 7, and the blade body 4 and the handle 2 are connected. When the projection 16 is engaged in the locking recess 7, the engagement groove 13a of the blade body 4 is engaged.
And the engagement protrusion 31 are in the engaged state, so that the movement of the blade body 4 in the forward direction is restricted. Further, since the blade body 4 is pressed against the right side of the support body 28 by pressing the distal end surface of the blade body pressing portion 30a, the movement in the left-right direction is also restricted.

Subsequently, the user rotates the handle 2 about the tip of the blade 4. By this rotation, the blade body 4 is pulled out from the narrow groove 33. At the same time, the engagement groove 13a of the blade body 4
And the engagement projection 31 is released. At this time, the sandwiching piece 29 is pushed rightward against its own elastic force, and in a state where the tip end surface of the blade body pressing portion 30a is pressed against the right side surface of the blade body 4, the two pieces 31 and 13a are pressed. The engagement is released.

Next, the user also operates the left blade 4 as follows.
The handle 2 is mounted in the same manner as the method in which the right blade 4 is mounted on the handle 2, but at the time of mounting, the handle 2 is inverted so that the dovetail 15 of the handle 2 can be inserted into the dovetail groove 6 of the blade body 4. After the blade 4 is attached to the other handle 2, the handle 4
Around the tip of the. By this rotation, the blade body 4
Is extracted from the narrow groove 33.

A method of attaching the blade body 4 to the housing case 26 with the blade body 4 attached to the handle 2 will be described. In the above state, the user opens the handle 2 and puts the tip of the one blade body 4 into the one insertion port 34 (the right insertion port 3).
4) and rotate around the tip of the blade body 4. Then, the tip of the blade body 4 is inserted into the narrow groove 33. Further, the user rotates the blade body 4 to insert the blade body 4 between the support body 28 and the blade body pressing portion 30a, and the engagement groove 13a and the engagement protrusion 3
1 is pushed downward against the elastic force of the sandwiching piece 29 in a state where the engaging piece 1 is engaged. By this pushing, the right side surface of the blade body 4 is pressed by the distal end surface of the blade body pressing portion 30a. Therefore, since the engagement groove 13a of the blade body 4 and the engagement protrusion 31 are in the engaged state, the forward movement of the blade body 4 is restricted.
Further, since the blade body 4 is pressed against the right side of the support body 28 by pressing the distal end surface of the blade body pressing portion 30a, the movement in the left-right direction is also restricted.

Next, the other blade body 4 is attached to the housing case 26 in the same manner as the one blade body 4. That is, the tip of the blade body 4 is inserted into the left insertion port 34. After that, the blade body 4 is rotated around its tip,
It is inserted between the support 28 and the blade holding portion 30b. By this insertion, the engagement groove 13a of the blade body 4 and the engagement protrusion 31 are engaged.

Accordingly, in the replacement blade case of this embodiment, the blade body 4 is provided with the engagement groove 13a, and the blade body holding portion 30b and the support body 28 are provided with the engagement projections 31, so that the both 13a and 31 are uneven. It was detachably engaged in the relationship. Therefore, the blade body 4 can be attached to and detached from the handle 2 in a state where the blade body 4 is stable without rattling. Moreover, the blade body 4
In this replacement work, the operator can replace the blade body 4 without touching the blade body 4, which is safe.

Further, since the distal end surfaces of the blade holding portions 30a and 30b are pressed against the side surfaces of the blade 4 by the elastic force of the holding pieces 29, the blade 4 can be reliably held at the holding position. . Therefore, the blade body 4 can be replaced with a handle in a more stable state without the blade body 4 being displaced.

Further, the used blade body 4 having a reduced cutting edge is mounted on the blade body mounting lid 27, and the new blade body 4 before replacement is separately mounted on the blade body mounting case 26. Therefore, the distinction between the new blade 4 and the used blade 4 is clarified, and the new blade 4 and the used blade 4 are not mixed. As a result, maintenance of the blade body 4 becomes easier, and a large burden on nurses and the like is prevented.

The present invention can be modified, for example, as follows. (1) In the above embodiment, the blade body 4 is a cooper that is a bending blade, but may be changed to a straight blade that is a straight blade. In this case, the narrow groove 33 is formed along the front-back direction of the blade body mounting case 26.

(2) In the above embodiment, the blade mounting case 26 is formed from a polycarbonate resin, but other than this, a polysulfone resin having heat resistance and chemical resistance, C
OC (cyclic olefin copolymer) may be used. Further, ABS (acrylonitrile butadiene styrene copolymer) having no heat resistance and chemical resistance may be used.

(3) The main body case 25 may be colored according to the type of the blade body 4. With this configuration, it is possible to determine at a glance which type of blade body 4 is mounted on which main body case 25.

(4) In the above embodiment, the engaging projection 31 is provided on the support 28, the engaging groove 13a is provided on the side surface of the blade 4, and the blade mounting 4 was attached. Alternatively, an engagement groove may be provided in the support 28, and the engagement protrusion 13 of the blade body 4 may be engaged in the engagement groove. With this configuration, the blade mounting case 26
Of the blade body mounting case 26 can be made compact.

(5) In the above embodiment, the engagement projections 31 are provided on the right side surface of the support 28 and the tip end surface of the blade holding portion 30b. In addition, the engagement protrusion 31 of the blade body holding portion 30b may be used.
May be omitted, and the engagement protrusions 31 may be provided on both left and right side surfaces of the support 28. Alternatively, the engagement protrusion 31 on the right side surface of the support 28 may be omitted, and the engagement protrusion 31 may be provided on the distal end surfaces of the both blade body pressing portions 30a and 30b.

(6) As shown in FIG.
7, the support 35, the positioning protrusions 36a, 36b
May be integrally formed on the back surface of the blade mounting case 26. Further, an insertion groove 39 may be used instead of the insertion port 38.
According to this configuration, the blade body 4 whose cut has been degenerated is supported by the support member 35.
And the positioning projections 36a and 36b can be attached more quickly and easily.

(7) In the above embodiment, the blade mounting case 26
Although the blade body mounting lid 27 is bonded and fixed to this, the blade body mounting lid 27 may simply be irremovably fitted without using an adhesive. Further, the blade mounting lid 27 may be detachably fitted to the blade mounting case 26.

Although the embodiments of the present invention have been described above, technical ideas other than the claims that can be grasped from the embodiments will be described below together with their effects. 2. The spare blade case according to claim 1, wherein (a) the main body case 25 is made of a synthetic resin having at least one of heat resistance and chemical resistance.

According to this configuration, since the body case 25 has heat resistance, the blade body 4 is attached to the blade body mounting case 26 without having to remove the blade body 4 from the blade body mounting case 26 during sterilization of the blade body 4. The state can be steam sterilized. For this reason, the main body case 25 can withstand the high temperature of steam. In addition, since it has chemical resistance, the blade 4
At the time of disinfection, the blade body 4 can be inserted into the disinfecting tank or the like while being attached to the blade body mounting case 26 without being detached from the blade body mounting case 26. Therefore, the main body case 25 can withstand the disinfecting liquid.

(B) The replacement blade case according to claim 1, wherein a blade housing chamber is formed in the main body case 25 for housing the used blade 4 having a reduced cutting edge. According to this configuration, the used blade body 4 is housed in the blade body housing chamber, so that the distinction between the new blade body 4 to be replaced and the used blade body 4 becomes clear.

(C) The replacement blade case according to (b), wherein the blade body storage chamber is provided with blade body holding portions 35, 36a, and 36b for holding replacement blades in an uneven relationship. According to this configuration, the blade body 4 and the blade body holding portions 35, 36a, 36b
The blade body 4 can be quickly and safely removed from the handle 2 in a state where the blade body 4 is engaged in an uneven relationship. In this specification, means and members related to the configuration of the present invention are defined as follows.

(A) The scissors of the present invention do not mean only surgical scissors, but also include commonly used scissors such as office scissors, hairdressing scissors, and planting scissors.

[0054]

According to the present invention as described in detail above, according to the present invention, that the blade and blade clamping portion engages in relation irregularities
Can be. Also, due to the unevenness, the front of the body case
The movement of the blade body to the
It is possible to escape. In this engaged state, the blade body can be more quickly and safely replaced with the handle without touching the blade body.

According to the invention of claim 2, according to claim 1
In addition to the effects of the invention, the concave and convex portions are
Engage as possible. Therefore, the blade body is stable without rattling
In this state, the blade can be attached to and detached from the handle.
According to the invention of claim 3, the invention according to claim 1 or 2
In addition to the effects of
The blade is pressed in the clamping direction by the elastic force of the clamping piece.
Therefore, it can be reliably held at the clamping position. Therefore, the blade
The blade body against the handle in a stable state without slipping
Can be replaced.

[Brief description of the drawings]

FIG. 1 is a front view of a scissor embodying the present invention.

FIG. 2 is a partially enlarged plan view of the scissor with the blade removed.

FIG. 3 is a partially enlarged plan view of a scissor equipped with a blade body.

FIG. 4 is an enlarged side view of the scissor.

5 is a sectional view taken along the line XX of FIG. 4;

FIG. 6 is a plan view of the main body case.

7 is a sectional view taken along the line YY of FIG. 6;

FIG. 8 is a sectional view taken along the line ZZ in FIG. 7;

FIG. 9 is an exploded perspective view showing the main body case.

FIG. 10 is a perspective view showing a bottom surface of a main body case showing another embodiment.

[Explanation of symbols]

2 ... handle, 4 ... blade, 20 ... detachment mechanism, 25 ... body case, 28 ... support, 29 ... clamping piece, 30a, 30b ... blade holding part (28, 29, 30a, 30b A clamping portion is configured.)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B26B 29/04 B26B 13/04 B26B 21/08

Claims (3)

(57) [Claims] A blade body holding portion (28, 29, 30) for holding a blade body (4) as a replacement blade in a main body case (25).
a, 30b), and the blade body holding portions (28, 29, 30)
a, a recess or protrusion in 30b), the blade clamping portion (28,29,30A, 30b) are detachably engaged in a concavo-convex relationship to the blade body (4), irregularity of the relationship Is
Longitudinal movement of the blade body (4) in front of the base (25)
The width of the upper blade body (4), which is the relationship that regulates
A replaceable blade case characterized in that it can escape in the opposite direction . 2. A blade holding portion (28, 29, 30a, 3)
0b) has a recess (13a) provided in the blade body (4).
An engaging protrusion (31) is provided.
Item 7. A replaceable blade case according to Item 1. 3. The blade body holding portion (28, 29, 30a, 3)
0b) has a clamping piece (29), and the clamping piece (29) is a blade
(4) characterized by having elasticity in the clamping direction.
The replacement blade case according to claim 1.