JP2019084630A - Cutting machine - Google Patents

Abstract

To provide a cutting machine that can suitably suppress an upper blade from turning relatively to a lower blade regardless of an intension of a user.SOLUTION: A cutting machine A is configured to comprise a base B having an upward surface m on which a paper P is placed and having a lower blade J at a side end part thereof, an upper blade C supported to be turnable along the lower blade J of the base B, and a turning prohibiting mechanism G that can prohibit the upper blade C from turning at least in one direction. Further, in the cutting machine A, operation means for activating the turning prohibiting mechanism is arranged at a position away from the upper blade C.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cutter for cutting paper.

  Conventionally, a so-called push-cut type cutting machine is known which can cut a sheet placed on a base by cooperation of an upper blade and a lower blade by rotating an upper blade (cutter blade) with respect to a base. ing.

  Conventionally, the upper blade and the lower blade in a push-cut type cutting machine are press-contacted by a press-contact mechanism that can regulate relative rotation between the two. Basically, in the cutting machine, the upper blade and the lower blade do not rotate relative to each other unless the user directly rotates the upper blade by the action of the pressing mechanism.

  On the other hand, since the movement of the upper blade usually depends only on the pressing mechanism, for example, when an article or the like around the upper blade collides and an unexpected operating force is applied to the upper blade. When the upper blade is worn excessively or when the above-mentioned pressure welding mechanism is damaged or loosened, the upper blade and the lower blade rotate relative to each other regardless of the intention of the user. It is possible to do it.

JP, 2006-321025, A

  The present invention has been made in view of the above circumstances, and a cutting machine capable of suitably suppressing the relative rotation of the upper blade relative to the lower blade regardless of the intention of the user. It is to provide.

  That is, the present invention has the following configuration.

  The invention according to claim 1 is a base having an upper surface on which a sheet is disposed and having a lower blade at a side end, and an upper blade rotatably supported along the lower blade of the base. And a cutting mechanism including a rotation inhibiting mechanism capable of inhibiting rotation of the upper blade in at least one direction, wherein operation means for operating the rotation inhibiting mechanism is separated from the upper blade. It is a cutter provided at the position.

  The invention according to claim 2 is provided with a sheet presser rotatably supported with respect to the base so as to be able to press the sheet disposed adjacent to the upper blade and disposed on the upper surface. The cutting machine according to claim 1, wherein the operation means is an operation member operated by a finger, and the operation member is provided at a position where the sheet press is interposed between the operation member and the upper blade. .

  The invention according to claim 3 is the cutter according to claim 2, wherein the rotation inhibiting mechanism can inhibit the upper blade from pivoting downward.

  The invention according to claim 4 is that the rotation prohibition mechanism includes the operation member and a pin attached to the operation member, and the rotation prohibition where the pin is positioned under the upper blade 4. The cutter according to claim 3, wherein the sliding movement is performed between a position and a rotation permitting position where the pin is not located below the upper blade.

  The invention according to claim 5 is the cutting machine according to claim 4, wherein the pin of the rotation inhibiting mechanism can protrude and retract under the upper blade through a through hole provided in the lower blade. .

  The invention according to claim 6 is that the base includes a base main body having the upward facing surface, and a rear cover having a positioning surface disposed on the rear side of the base main body and against which the upper edge of the sheet can abut. The cutter according to any one of claims 1, 2, 3, 4 or 5, wherein the rotation inhibiting mechanism is disposed in the rear cover.

  The invention according to claim 7 is that the operation member includes an operation member base and an operation projection protruding from the operation member base, and the operation member base is the rotation prohibited position. A first display area exposed from the window of the back cover when in the second position, and a second display area exposed out of the window of the back cover when in the rotation permitting position. It is a cutter of 5 statement.

  As described above, according to the present invention, it is possible to provide a cutter capable of suitably suppressing the relative rotation of the upper blade relative to the lower blade regardless of the intention of the user.

1 is a perspective view showing an embodiment of the present invention. The perspective view which shows the embodiment. The right view which shows the embodiment. The front view which shows the embodiment. The top view which shows the embodiment. The partially expanded perspective view which shows the embodiment. The partially expanded perspective view which shows the embodiment. The perspective view which shows the embodiment. The right view which shows the embodiment. The disassembled perspective view which shows the embodiment. The disassembled perspective view which shows the embodiment. The X direction arrow line view in FIG. The YY sectional view taken on the line in FIG. The ZZ sectional view in FIG. Explanatory drawing for demonstrating the attachment structure of a safety plate.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, the present invention is applied to a cutter A for cutting a sheet P into an appropriate size. The cutting machine A is a so-called push-off configured such that the upper blade C rotatably supported on the base B can cut the sheet P in cooperation with the lower blade J provided on the base B. It is of the formula.

  The cutting machine A has a base B mounted on a top plate such as a desk (not shown), an upper blade C rotatably supported with respect to the base B, and a base adjacent to the upper blade C. A sheet presser E rotatably disposed with respect to B, and a safety plate F which is detachably provided on the sheet presser E are provided. In addition, the cutting machine A is operated by the user's manual operation, and a rotation inhibiting mechanism G capable of inhibiting the upper blade C in the upper position (U) from rotating toward the lower position (S) is provided. ing.

  Hereinafter, each configuration of the cutting machine A will be described.

  The base B has a base main body 1 having an upward surface m on which the sheet P to be cut is disposed, a lower blade J fixed to the right end of the base main body 1, and a rear edge of the base main body 1 And a front cover 3 disposed along the front edge of the base body 1.

  The base body 1 is made of metal. That is, the base main body 1 is made of a material with which a paper positioning ruler H having a magnet (not shown) can be attracted by a magnetic force. The base body 1 has an upwardly facing surface m which is rectangular in plan view and is exposed to the upper side between the rear cover 2 and the front cover 3. In addition, as shown in FIG. 10, when the cutting machine A is not used, the upward surface m has a size such that the safety plate F released from the sheet presser E can be placed in a laid state. It is set.

  The base body 1 has a top wall 11 having an upward surface m, a right wall 12 extending from the right side edge of the top wall 11, and a left wall extending from the left side edge of the top wall 11. 13, a front wall 14 extending from the front end edge of the top wall 11, and a rear wall 15 extending from the rear end edge of the top wall 11.

  The lower blade J can cut the sheet P in cooperation with the upper blade C. The lower blade J has a flat plate shape extending in the front-rear direction. The lower blade J is made of metal having excellent rigidity. The lower blade J is fixed to the right side wall 12 of the base body 1 by a screw v so that the upper end face thereof is substantially flush with the upper surface m of the top wall 11 of the base body 1. The lower blade J is provided with a through hole a <b> 1 extending in the left-right direction so that the pins Q constituting the rotation inhibiting mechanism G can be protruded and retracted.

  The back cover 2 is made of synthetic resin. The rear cover 2 is attached to the rear end portion of the base body 1 by a screw v. The rear cover 2 has an upper wall 21 having a rectangular window 21a for exposing the operation member 7 constituting the rotation inhibiting mechanism G, an inner wall 22 suspended from the front end edge of the upper wall 21, and an upper surface The outer wall 23 hanging down from the rear end edge of the wall 21, the left side wall 24 hanging down from the left end edge of the upper wall 21, and the outer wall 23 are provided continuously and located on the right side of the base end of the upper blade C The right side wall 25 is provided.

  The upper wall 21 of the rear cover 2 is provided with a sheet pressing support portion 21b capable of rotatably supporting the sheet pressing E between the sheet pressing position in contact with the upper surface of the sheet P and the separated position away from the sheet P. ing. The sheet pressing support portion 21 b includes a circumferential wall 211 that is substantially U-shaped in a plan view, and a bottom wall 212 provided at the lower end of the circumferential wall 211. On the inner surface side of the peripheral wall 211, a recess 213 for bearing is provided. At the base end portion 41 of the sheet presser E, a shaft portion 41 a is provided so as to protrude in the left-right direction. The shaft portion 41 a of the sheet presser E is rotatably engaged with the recess 213 provided in the peripheral wall 211.

  The peripheral wall 211 provided on the upper wall 21 is provided with a locking member V having a pair of locking claws v1. The locking member V can lock the sheet presser E at a predetermined position. The locking member V has a U-shaped shape facing upward, and is screwed to the bottom wall 212 of the sheet pressing support portion 21b.

  The inner wall 22 has a sheet positioning surface 221 for positioning the upper edge p1 of the sheet P to be cut. Between the right side wall 25 and the upper wall 21 is formed a slit sl which can allow the upper blade C to pivot in the vertical direction.

  The lower surface of the rear cover 2 is substantially closed by the rear wall 15 of the base body 1, but the vicinity of the base end of the upper blade C is closed by a lower cover 26 which is separate from the base body 1.

  The front cover 3 is made of synthetic resin. The front cover 3 is attached to the front end of the base body 1. The front cover 3 has an upper wall 31, an inner wall 32 depending from the rear end edge of the upper wall 31, an outer wall 33 depending from the front edge of the upper wall 31, and left edges of the inner wall 32 and the outer wall 33. And the right side wall 35 which connects between the right end edges of the inner wall 32 and the outer wall 33. The right side wall 35 of the front cover 3 is provided with an upper movement lock claw t that prohibits the upper movement of the upper blade C when the upper blade C is at the lower position (S). The upper movement lock claw t is rotatably supported by a lock claw support portion 36 provided to project from the right side wall 35 of the front cover 3. Then, when the upper blade C is at the lower position (S), when the upper movement lock claw t is rotated, the upper movement lock claw t is an engagement convex portion provided on the outside of the front end portion of the upper blade C. It is supposed to be related to c1.

  The upper blade C can cut the sheet P in cooperation with the lower blade J of the base B. The upper blade C has a flat plate shape extending in the front-rear direction. The upper blade C is made of metal having excellent rigidity. The upper blade C is rotatably supported along the lower blade J of the base B. That is, the rear end portion (the end portion on the back side as viewed from the user) which is the base end portion of the upper blade C is rotatably supported relative to the base B. The upper blade C is configured to be pivotable between an upper position (U) where the sheet P can be disposed between the lower blade J and the lower position (S) which is disposed side by side in substantially the same posture as the lower blade J. It is done. At the front end of the upper blade C (the end on the front side as viewed from the user), a grip D that can be held by the user is attached.

  The upper blade C is held in pressure contact with the lower blade J with a predetermined force by a pressure welding mechanism w disposed in the rear cover 2. The pressure welding mechanism w has an upper blade contact portion w11 which abuts the outer surface of the upper blade C at one end and a spindle w1 having a screw groove mz for attaching a nut at the other end, and is wound around the spindle w1. The coil spring sp and the two types of nuts n1 and n2 screwed into the screw groove mz of the support shaft w1 are provided. The pressing mechanism w uses the biasing force of the coil spring sp disposed between the upper blade contact portion w11 of the support shaft w1 and the two types of nuts n1 and n2 to make the upper blade C and the lower blade J Are brought into pressure contact with a constant pressing force.

  The sheet presser E is rotatably supported on the base B so as to be able to press the sheet P disposed adjacent to the upper blade C and disposed on the upper facing surface m of the base B. The sheet presser E has a shape extending along the upper blade C in the front-rear direction of the base B. The sheet presser E includes a sheet presser main body 4 made of synthetic resin, and a sheet contact pad K disposed on the lower surface side of the sheet presser main body 4.

  The sheet pressing main body 4 has a base end portion 41 having a shaft portion 41 a engaged with the recess portion 213 of the rear cover 2, a straight portion 42 extending forward from the base end portion 41, and a plane from the front of the straight portion 42. It has an inwardly extending portion 43 that extends to the opposite side of the upper blade C and the lower blade J when viewed.

  The base end portion 41 has a rectangular block shape, and is provided with an engagement concave portion 41b in which the locking claw v1 of the sheet pressing and supporting portion 21b engages with the outer surface thereof.

  The straight portion 42 extends substantially in parallel to the upper blade C and the lower blade J in a plan view, and a grooved safety plate attachment portion 42a for attaching the safety plate F is formed on the upper surface. The safety plate attachment portion 42a has a groove-like shape as a whole. In the safety plate attaching portion 42a, a plurality of convex portions 42b, which are the other engaging portions, are protruded forward in the vicinity of the bottom of the groove. The safety plate attachment portion 42a is provided with a positioning wall 42c spaced apart from the convex portion 42b and extending in the front-rear direction. In addition, the separation dimension of the convex part 42b and the positioning wall 42c is set to the dimension substantially the same as the thickness dimension of the insertion wall 62 provided in one engaging part 6 in the safety plate F.

  The inward extension portion 43 includes a lower extension wall 43a substantially parallel to the upper surface m of the base B at the sheet pressing position, and an upright wall 43b erected from the front end of the lower extension wall 43a. . The sheet pressing main body 4 forms a recessed portion by the inward extending portion 43 and the straight portion 42. From the front end edge of the straight portion 42 and the upstanding wall 43b, a horizontal piece 44 is provided which protrudes forward (on the front side) so that the user can grip the sheet pressing E with fingers. There is.

<Safety board F>
The safety plate F is provided so as to be detachably attached to the sheet presser E. The safety plate F is a single member made of synthetic resin, and in this embodiment, it is set to be transparent or translucent. The safety plate F can be attached to and removed from the sheet presser E without using a fixing tool that is independent of the safety plate F such as a screw.

  The safety plate F can be engaged with the plate-like safety plate main body 5 and a safety plate attachment portion 42 a provided at the lower end portion of the safety plate main body 5 and the other engaging portion provided on the sheet presser E The engaging portion 6 of

  That is, the safety plate F is engaged with the safety plate attachment portion 42a which is the other engagement portion provided on the sheet pressing E by the one engagement portion 6 provided at the lower end portion. The sheet is attached to the sheet presser E. In this embodiment, by sliding the safety plate F forward with respect to the sheet pressure E, the recess 61 of one engaging portion 6 provided on the safety plate F and the other engagement provided on the sheet pressure E The projection 42b of the safety plate attachment portion 42a, which is a part, can be engaged. On the other hand, by sliding the safety plate F backward with respect to the sheet pressure E, the concave portion 61 of one engaging portion 6 provided on the safety plate F and the other engaging portion provided on the sheet pressure E The engagement state of the safety plate attachment portion 42a with the convex portion 42b is released.

  The safety plate main body 5 is formed in a trapezoidal shape in a side view. The safety plate main body 5 includes a lower main body 51 located at the lower part and an upper main body 52 located at the upper part. The upper main body portion 52 of the safety plate main body 5 is provided with an inclined surface 52a which is inclined so as to be gradually separated from the upper blade C toward the upper side. Further, at the rear of the upper main body 52 in a side view, there is formed an inclined side 52b set so as to make substantially the same inclination angle when adjacent to the upper blade C.

  One engaging portion 6 includes a plurality of recessed portions 61 opened toward the front, and an insertion wall 62 formed adjacent to the plurality of recessed portions 61. A safety plate attachment portion 42a, which is the other engagement portion engaged with one engagement portion 6, is provided on the sheet presser E, and includes a plurality of convex portions 42b provided to project rearward. . The insertion wall 62 is inserted between the convex portion 42b and the positioning wall 42c in the safety plate attaching portion 42a of the sheet pressure E, and plays a role of maintaining the posture of the safety plate F with respect to the sheet pressure E.

  The dimension of the safety plate F in the front-rear direction is set shorter than the dimension in the front-rear direction of the upper surface m of the base B. For this reason, as shown in FIG. 10, in the non-use state where the safety plate F is not attached to the sheet presser E, the safety plate F can be placed on the upper surface m of the base B in a laid state. It has become possible to control loss.

<Rotation prohibition mechanism G>
The rotation inhibiting mechanism G is a manual based on the intention of the user that the upper blade C in the upper position (U) does not move (does not descend) while the user sets the sheet P on the base B. It can be set by operation. That is, the rotation inhibiting mechanism G restricts the upper blade C from performing an unexpected operation, which contributes to the safety of the user.

  The rotation prohibiting mechanism G can prohibit rotation of the upper blade C in one direction, that is, rotation of the upper blade C at the upper position (U) toward the lower position (S). In other words, the rotation inhibiting mechanism G can inhibit the upper blade C from pivoting downward.

  Further, in this embodiment, the operation member 7 which is operation means for operating the rotation inhibiting mechanism G is provided at a position away from the upper blade C. That is, the operation member 7 operated by the user's finger is provided at a position where the sheet press E is interposed between the operation member 7 and the upper blade C.

  More specifically, the rotation prohibition mechanism G is a rotation prohibition position (L) for prohibiting the rotation of the upper blade C by the user's operation, and a rotation allowable position for permitting the rotation of the upper blade C. It can slide in the left-right direction with (R). The rotation inhibiting mechanism G includes an operation member 7 made of synthetic resin and a metal pin Q attached to the operation member 7.

  The operating member 7 is provided with an operating member base 71 and an operating projection 72 provided to project from the operating member base 71. The rotation inhibiting mechanism G is disposed in the rear cover 2.

  The operation member base 71 includes an operation member base main body 711 having a rectangular flat plate shape, and a pin support portion 712 which protrudes from the lower surface of the operation member base main body 711 and holds one end of the pin Q.

  The operation member base main body 711 is a first display area r1 exposed from the window 21a of the rear cover 2 when in the rotation inhibition position (L), and a window of the cover when in the rotation allowance position (R) And a second display area r2 exposed from 21a. In this embodiment, the first display area r1 displays a color arrangement (for example, red or indigo color) that easily attracts the user's attention.

  The pin Q is a metal bar. The pin Q has an operation member 7 between a rotation prohibiting position (L) in which the tip end thereof is positioned below the upper blade C and a rotation permitting position (R) in which the tip portion is not positioned below the upper blade C. Along with the slide movement. The pin Q is slidably supported by a channel-like guide member 9 attached to the rear wall 15 of the base body 1.

  In this embodiment, the pin Q can be protruded and retracted below the upper blade C through the through hole a1 provided in the lower blade J excellent in rigidity.

  Note that the rotation inhibiting mechanism G can stop by the moderation mechanism 8 between the rotation inhibition position (L) and the rotation allowance position (R). The moderation mechanism 8 includes a plate-like moderation locking plate 81 attached to the lower surface of the operation member base main body 711 and having a recessed portion 81a spaced apart to the left and right at the front edge; And a leaf spring member 82 having a projection that can be resiliently engaged with the recess 81a.

  As described above, the cutting machine A according to this embodiment has the base B having the upper surface m on which the sheet P is disposed and the lower blade J at the side end, and the lower blade of the base B An upper blade C rotatably supported along J, and a rotation inhibiting mechanism G capable of inhibiting rotation of the upper blade C in at least one direction, that is, rotation of the upper blade C downward J; Be prepared. And the operation member 7 which is an operation means operated with the finger Y for operating the rotation prohibition mechanism G is provided in the position away from the upper blade C. As shown in FIG. For this reason, it becomes possible to provide the cutting machine A capable of suitably suppressing the relative rotation of the upper blade C with respect to the lower blade J regardless of the intention of the user.

  That is, since the operation member 7 of the rotation inhibiting mechanism G is provided at a position away from the upper blade C, it becomes easy for the user to operate the operation member 7 and operate the rotation inhibition mechanism G according to the intention of the user. . In other words, since the cutting machine A is provided with the rotation prohibiting mechanism G separately and independently from the pressure contact mechanism w provided conventionally, the upper blade C is opposed to the base B for the user. It is difficult to give a psychological unrest that they may move freely.

  A sheet presser E rotatably supported on the base B is provided so as to be able to press the sheet P disposed adjacent to the upper blade C and disposed on the upward surface m. The operation member 7 is provided at a position where the sheet presser E is interposed between the operation member 7 and the upper blade C. For this reason, since the operation member 7 is disposed at a position suitably separated from the upper blade C, it becomes easy for the user to recognize and operate the rotation inhibiting mechanism G.

  The rotation inhibiting mechanism G includes an operation member 7 and a pin Q attached to the operation member 7. And between the rotation prohibition position (L) where the tip portion which is a part of the pin Q is located under the upper blade C and the rotation allowance position (R) where the pin Q is not located under the upper blade C It is configured to be slidable. For this reason, by the slide operation of the operation member 7, the rotation inhibiting mechanism G can be operated relatively easily.

  The pin Q of the rotation inhibiting mechanism G can pass through a through hole a1 provided in the lower blade J, and can protrude and retract under the upper blade C. For this reason, the pin Q is supported by the lower blade J excellent in strength. That is, even when an excessive force from the upper blade C acts on the pin Q, the lower blade J supporting the pin Q is excellent in strength, so that it is possible to preferably exhibit the expected turning prohibition function. It has become.

  A base B includes a base main body 1 having an upward surface m, and a rear cover 2 provided on the rear side of the base main body 1 and having a positioning surface 221 with which the upper edge p1 of the sheet P can abut. . The rotation inhibiting mechanism G is disposed in the rear cover 2. For this reason, the rotation inhibiting mechanism G is disposed in the rear cover 2 in which the line of sight is easy for the user to easily turn and understand.

  The operating member 7 includes an operating member base 71 and an operating projection 72 provided to project from the operating member base 71. The first display area r1 exposed from the window 21a of the rear cover 2 when the operation member base 71 is in the rotation prohibition position (L) and the rear cover when the operation member base 71 is in the rotation allowance position (R) And a second display area r2 exposed from the second window 21a. For this reason, by making the appearances (coloration, characters, figures, etc.) of the first display area r1 and the second display area r2 different, the rotation prohibition mechanism G has the rotation prohibition position (L) or the rotation. It is possible to easily visually recognize at which position of the allowable position (R).

  The present invention is not limited to the embodiments detailed above.

  In the embodiment described above, the rotation inhibiting mechanism can inhibit only the downward pivoting of the upper blade, but the present invention is not limited thereto, and the upward pivoting of the upper blade is also forbidden. It may be possible. For example, the pin of the rotation inhibiting mechanism may be configured to be able to be positioned in the through hole formed in both the upper blade and the lower blade at the rotation inhibiting position.

  The rotation inhibiting mechanism may be provided as long as the operation means is provided at a position away from the upper blade, and is not limited to the one shown in the above-described embodiment. For example, the operation means of the rotation inhibiting mechanism may be provided on the side opposite to the lower blade in the base.

  In the embodiment described above, when the tip of the pin projects and retracts from within the base, the rotation inhibiting mechanism includes a rotation inhibiting position located below the upper blade and a rotation permitting position not located below the upper blade. However, it is not limited to such.

  For example, a rotation prohibiting mechanism is rotatably supported by the base body and extends in the left and right direction, and a tip extending in a direction substantially orthogonal to the rotation member body integrally connected to the rotation member body. What has with the tip control part which can be made to abut under the upper blade is considered. Then, by rotating the rotation member main body, the tip end of the tip regulation portion can be brought into contact with the lower edge of the upper blade to inhibit the downward rotation of the upper blade in a so-called “stick” manner. It is conceivable to adopt a non-regulating position in which the leading end regulating portion and the upper blade do not abut. Even such a thing can achieve the intended purpose. In addition, if it is a thing of this composition, in order to avoid component breakage when a certain or more excessive operation force acts on an upper blade, it can be forcedly moved a tip control part from a control position to a non-control position. Is also possible.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

A: Cutting machine B: Base C: Upper blade G: Rotation inhibiting mechanism J: Lower blade P: Paper m: Upper surface

Claims (7)

A base having an upper surface on which sheets are disposed and having a lower blade at a side end, an upper blade rotatably supported along the lower blade of the base, and at least one direction of the upper blade A cutter provided with a rotation inhibiting mechanism capable of inhibiting rotation of
A cutting machine in which operation means for operating the rotation inhibiting mechanism is provided at a position separated from the upper blade. A sheet presser rotatably supported on a base so as to be able to press a sheet disposed adjacent to the upper blade and disposed on the upward surface, comprising:
The operation means is an operation member operated by a finger.
The cutting machine according to claim 1, wherein the operation member is provided at a position where the sheet presser is interposed between the operation member and the upper blade. The cutting machine according to claim 2, wherein the rotation inhibiting mechanism can inhibit the upper blade from pivoting downward. The rotation inhibiting mechanism includes the operation member and a pin attached to the operation member.
4. The apparatus according to claim 3, wherein the pin is configured to be slidable between a rotation prohibiting position in which the pin is positioned below the upper blade and a rotation permitting position in which the pin is not positioned under the upper blade. Cutting machine. The cutting machine according to claim 4, wherein the pin of the rotation inhibiting mechanism can pass through a through hole provided in the lower blade and project and retract below the upper blade. The base includes a base main body having the upward facing surface, and a rear cover disposed on the rear side of the base main body and having a positioning surface against which the upper edge of the sheet can abut.
The cutter according to claim 1, 2, 3, 4 or 5, wherein the rotation inhibiting mechanism is disposed in the rear cover. The operation member includes an operation member base and an operation projection protruding from the operation member base.
The first display area exposed from the window of the rear cover when the operation member base is in the rotation prohibited position, and the first display area exposed from the window of the rear cover when the operation member base is in the rotation permitted position The cutter according to claim 5, further comprising two display areas.