JP2016165903A - Carving knife - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carving knife that enables a user to select whether to use a protection member arranged around a knife edge if needed, and prevents the protection member from being lost.SOLUTION: A body 2 of a carving knife 1 is provided with a protection member 3. The protection member 3 can be reciprocally moved between a position near a knife edge 4 and a position retreated from the knife edge 4 along the body 2 without being detached from the body 2. A user of the carving knife 1 moves the protection member 3 if needed to protect a body of the user from the knife edge 4 or to draw the knife edge 4.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a carving sword provided with a protective member around a blade so that a user is not accidentally injured.

  Since the sculpture sword is used with the blades exposed, careful handling is necessary. In view of this, a sculpture sword has been proposed in which a protective member is disposed around the blade to make it difficult for the user's finger to touch the blade. Such engraving swords are disclosed in Patent Documents 1 and 2.

  Patent Document 1 discloses a sword having a guard that prevents a user from touching the blade and a cap that covers the guard. Therefore, when the guard is attached, the user can use the sword with confidence.

  Patent Document 2 discloses a protective cover for protecting the cutting edge of the engraving sword. The protective cover disclosed in Patent Document 2 is connected to a sack that can be attached to and detached from the handle (main body portion) of the sword. That is, when a sack is attached to the handle of the sculptured sword, the blade is protected by the protective cover, and it becomes difficult for the user to touch the blade.

  The guard disclosed in Patent Document 1 and the protective cover disclosed in Patent Document 2 are both detachable from the main body to which the blade of the engraving sword is fixed. And when the user who is unfamiliar with the handling of the engraving sword uses the guard or the protective cover, the engraving work can be performed with peace of mind. In particular, for a user who uses a sword for the first time, a guard or a protective cover is a thankful member that can prevent injury.

JP 2009-29107 A Japanese Utility Model Publication No. 52-141698

  On the other hand, if the guard of Patent Document 1 and the protective cover of Patent Document 2 are provided, the angle at which the blade of the engraving blade hits the object to be engraved such as wood is restricted. The feeling gets worse. That is, there are many skilled users who feel that the protective cover is not attached and the blade is exposed, which is easier to use.

  Such skilled users often use the sword with the guard or protective cover removed. However, when the engraving work is completed and the engraving sword is accommodated in an accommodation case or the like, the presence of the removed guard or protective cover is often forgotten. As a result, the engraving sword is stored without a guard or a protective cover. Therefore, when a beginner tries to use the engraving sword at the next opportunity, since the guard or the protective cover is not attached, the engraving sword with the blade exposed must be used.

  Therefore, the present invention provides a sword that allows a user to select whether or not to use a protective member arranged around the blade as needed, and further eliminates the possibility of losing the protective member. Objective.

  The invention of claim 1 for solving the above-mentioned problem is a sword with a blade attached to a handle, and has a substantially U-shaped or substantially U-shaped portion that can be arranged around the cutting edge, The substantially U or substantially U-shaped part is movable between a position near the blade edge and a position retracted from the blade edge, and the substantially U or substantially U-shaped part is movable in the front-rear direction. The operation portion is restrained and does not drop out of the substantially U-shaped portion or the substantially U-shaped portion and can be operated by a user to move the substantially U-shaped portion or the substantially U-shaped portion. An engraving sword characterized in that an operation unit capable of moving a substantially U-shaped part is provided only on the back side with respect to a posture in use.

  The invention according to claim 2 is a sword having a main body portion to which the blade is fixed and a protective member that can be arranged around the blade, and the protective member is attached to the main body portion, It can be moved along the main body between a position that functions as a protective member and a position that retreats from the blade, and the protective member is constrained to be movable in the front-rear direction, so that the protective member does not fall out of the main body. The engraving sword has an operation part that can be operated to move the protective member, and the operation part that can move the protective member is only on the back side based on the posture in use It is.

  The invention according to claim 3 is an engraving sword having a main body portion to which the blade is fixed and a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be disposed around the blade edge. The U-shaped portion is movable along the main body portion between a position disposed around the blade edge and a position retracted from the blade edge while being attached to the main body portion. The U-shaped portion is constrained so as to be movable in the front-rear direction. The substantially U-shaped portion or the substantially U-shaped portion does not fall out of the main body portion, and the user operates the substantially U-shaped portion or the substantially U-shaped portion. An engraving sword having an operation part that can be moved, and the operation part capable of moving the substantially U-shaped part or the substantially U-shaped part is only on the back side with respect to a posture in use. It is.

  The invention according to claim 4 is an engraving sword having a blade attached to a handle, and has a portion that is warped toward the tip, and the warped portion is retracted from a position near the blade edge and the blade edge. An operation that can be moved between positions, the bent portion is constrained to be movable in the front-rear direction, the bent portion does not fall out, and the user can operate to move the bent portion. An engraving sword having an operation part capable of moving the warped part on the back side based on a posture in use.

  The invention according to claim 5 is the engraving sword according to any one of claims 1 to 4, characterized in that the operation portion is on the handle bottom side.

  The invention according to claim 6 is a protective member having a protective member main body and a tip formed at the tip of the protective member main body, and the tip is warped and is substantially U-shaped or substantially U-shaped in plan view. The engraving sword according to any one of claims 1 to 5, characterized in that the protective member main body portion is longer than the tip portion.

  According to the seventh aspect of the present invention, the protection member main body portion of the protection member engages with the main body portion to which the blade is fixed, and is constrained to be movable only in the front-rear direction along the main body portion. The engraving sword according to claim 6.

  The invention according to claim 8 has a main body portion to which the blade is fixed, and is a portion that becomes an upper surface during engraving work of the main body portion, from the handle edge side to the blade edge side at the tip portion of the main body portion. The engraving sword according to any one of claims 1 to 7, wherein there is a pressing portion that warps upward as it goes.

  The invention according to claim 9 is an engraving sword having a blade attached to a handle, and has a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be arranged around the cutting edge. The U-shaped portion is movable between a position near the blade edge and a position retracted from the blade edge, and the substantially U-shaped or substantially U-shaped portion is constrained to be movable in the front-rear direction. The U-shaped portion or the substantially U-shaped portion does not fall off, and has an operating portion that is operated by a user to move the substantially U-shaped portion or the substantially U-shaped portion, and the operating portion is on the handle bottom side. It is a sculpture sword.

  The invention according to claim 10 is an engraving sword in which a blade is attached to a handle, and has a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be arranged around the cutting edge. The U-shaped portion is movable between a position near the blade edge and a position retracted from the blade edge, and the substantially U-shaped or substantially U-shaped portion can be fixed at a position near the blade edge, An operation portion that can be fixed at a position where the substantially U-shaped portion or the substantially U-shaped portion is retracted from the cutting edge and can be operated by a user to move the substantially U-shaped portion or the substantially U-shaped portion. The engraving sword is characterized in that an operation part capable of moving the substantially U-shaped part or the substantially U-shaped part is provided only on the back side with respect to a posture in use.

  The invention according to claim 11 is an engraving sword in which a blade is attached to a handle, and has a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be arranged around the cutting edge. The U-shaped portion is movable between a position near the blade edge and a position retracted from the blade edge, and the substantially U-shaped or substantially U-shaped portion can be fixed at a position near the blade edge, The operation portion can be fixed at a position where the substantially U-shaped portion or the substantially U-shaped portion is retracted from the blade edge, and has an operation portion that is operated by a user to move the substantially U-shaped portion or the substantially U-shaped portion. Is a sculpture sword characterized by being on the handle bottom side.

  The invention according to claim 12 is a sword having a main body portion to which the blade is fixed and a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be arranged around the blade, The U-shaped portion is movable along the main body portion between a position disposed around the blade and a position retracted from the blade in a state of being attached to the main body portion, The engraving sword is characterized in that there is a pressing portion which is an upper surface during the engraving work and which is warped upward as it goes from the handle bottom side to the blade edge side at the tip portion of the main body portion.

  The invention described in claim 13 has a protective member, and the substantially U-shaped or substantially U-shaped portion in plan view is a tip portion of the protective member that is warped. , 3, 9, 10, 11, and 12.

  The invention described in claim 14 is characterized in that the substantially U-shaped or substantially U-shaped portion in plan view is constituted by a tip portion of an annular portion. The engraving knife according to any one of 11, 12, and 13.

  A first related aspect is a sword having a main body portion gripped by a user, a blade fixed to the main body portion, and a protective member that can be arranged around the blade, wherein the protective member is The engraving sword is movable along the main body between a position functioning as a protection member and a position retracted from the blade while being attached to the main body.

  In this aspect, in a state in which the protection member is attached to the main body, it can move along the main body between a position that functions as the protection member and a position that retreats from the blade. That is, when using the engraving sword, a user who finds it difficult to use the protective member in the vicinity of the blade can retract the protective member from the blade only by moving the protective member along the main body. . At this time, since the protection member is maintained attached to the main body, it is possible to avoid a situation where the protection member is lost while the engraving sword is used. Moreover, a protective member can be arrange | positioned near a blade and a user's body can be protected from a blade only by moving a protective member to the position which functions as a protective member along a main-body part.

  According to a second related aspect, the protective member is provided with a protective member side engaging portion that protrudes or is recessed in a direction orthogonal to the moving direction of the protective member relative to the main body portion. A main body side engaging portion that engages with the joint portion is provided, and an urging force against the force in the direction of releasing the engagement between the protective member side engaging portion and the main body side engaging portion acting on the protective member. It is a sword of a 1st aspect characterized by having a means.

In the second aspect, the protective member is provided with a protective member side engaging portion that protrudes or is recessed in a direction orthogonal to the moving direction of the protective member relative to the main body portion, and the main body portion has the protective member side engaging portion. The main body part side engaging part is provided. Therefore, when the protective member side engaging portion provided on the protective member engages with the main body portion engaging portion provided on the main body, movement of the protective member relative to the main body is prevented.
Further, since the urging means can resist the force in the direction of releasing the engagement of both the engaging portions, the engagement of the both engaging portions is not inadvertently released. That is, the protective member does not move relative to the main body at a timing not intended by the user. Therefore, the protective member is not detached from the main body during use of the engraving sword, and the tip of the protective member is not pressed and stored in the main body, which is safe. Further, by disengaging the engaging portions against the urging force of the urging means, the protective member can be easily moved along the main body portion. That is, it is possible to easily switch between the case where the protective member is arranged at a position functioning as the protective member and the engraved sword is used safely and the case where the protective member is retracted from the blade and used. The biasing means may be the elastic force of the protective member itself.

  In a related third aspect, the main body has an internal space that accommodates part or all of the protective member, and an elongated opening that communicates with the internal space and extends in the moving direction of the protective member. The protective member is provided with an operation portion protruding from the opening, and the urging force of the urging means resists the force of pushing the operation portion of the protective member from the opening side toward the internal space side. The engraving sword according to the second aspect, characterized in that:

In the third aspect, part or all of the protective member is accommodated in an internal space provided in the main body. That is, when the protection member is retracted from the blade, a larger part of the protection member is accommodated in the internal space. Therefore, the user who wants to use the engraving sword without the protective member can accommodate the more part of the protective member in the internal space of the main body, so that the protective member does not touch the hand during the engraving work. The engraving sword that implements the present invention can be used with the same feeling of use as the engraving sword provided with no protective member.
The main body is provided with a long hole-shaped opening that communicates with the internal space and extends in the moving direction of the protective member, and the protective member is provided with an operation portion that projects from the opening. And if a user presses the operation part which protrudes from opening against the urging | biasing force of an urging means, engagement of a protection member side engaging part and a main body side engaging part will disengage, and a protective member will be along a main body part. Can be moved.
That is, unless the operating portion is pressed with a force against the urging force of the urging means, the engagement between the protection member side engaging portion and the main body portion side engaging portion is not released. Therefore, the position of the protection member can be reliably fixed with respect to the main body, and as a result, the movement of the protection member not intended by the user can be prevented, which is safe.

  In a fourth related aspect, the main body portion is provided with a groove that accommodates a part or all of the protective member, the groove has an opening, and the width of the opening is narrower than the width inside the groove. The protective member is provided with an operation portion protruding from the opening, and the width of the protective member side engaging portion is smaller than the width inside the groove and larger than the width of the opening, and is at a predetermined position of the opening. Is formed with a body-side engaging portion that is a groove wider than the protective member-side engaging portion, and the urging force of the urging means acts on the operating portion of the protective member from the opening side to the inside of the groove. The second aspect is characterized in that the urging means urges the protection member side engagement portion so as to engage the protection member side engagement portion with the main body portion side engagement portion. The sculpture sword.

In a 4th aspect, a part or all of a protection member is arrange | positioned at the groove | channel provided in the main-body part, and a protection member is movable along a groove | channel. That is, since the width of the protective member side engaging portion is smaller than the width inside the groove and larger than the width of the opening, the protective member side engaging portion comes into contact with the edge of the opening and the protective member stays in the groove. The protective member does not jump out of the opening.
Here, at a predetermined position of the opening, a main body side engaging portion that is a groove wider than the width of the protective member side engaging portion is provided, and the protective member side engaging portion is further connected to the main body side engaging portion. Since the urging means for urging the protection member side engagement portion is provided so as to engage the protection member side, when the protection member moves along the groove, the protection member side engagement portion eventually becomes the main body portion side engagement portion. Fit and engage. As a result, the protection member becomes immovable with respect to the main body, and the position of the protection member with respect to the main body is fixed.
At this time, the urging force of the urging means resists the force acting on the operating portion of the protection member from the opening side to the groove inner side.
Further, when the protective member is pressed against the urging force of the urging means from the opening side to the groove inner side, the protective member side engaging portion moves from the main body portion side engaging portion to the groove inner side, and the protective member side The engagement between the engaging part and the main body part side engaging part is released. As a result, the protection member can move along the groove (main body portion). That is, unless the user intentionally presses the protective member, the protective member side engaging portion does not come off the main body portion side engaging portion. Therefore, the protection member is not unlocked with respect to the main body at an unexpected timing of the user, and the protection member is prevented from being inadvertently moved and is safe.

  According to a fifth aspect of the present invention, the opening is configured such that a pair of flat plate members separating the inside and the outside of the groove are arranged with a space therebetween, and the main body is disposed on the groove side surface of the flat plate member. A fourth aspect of the engraving sword is provided with a part-side engaging portion.

  In the fifth aspect, since the main body portion side engaging portion is provided on the groove side surface of the pair of flat plate members constituting the opening, the protective member side engaging portion urged by the urging means is provided. Engage securely with the main body side engaging portion. That is, the protective member side engaging portion does not come out of the opening and is not disengaged from the main body portion engaging portion. Therefore, the protection member is securely fixed to the main body. Further, the main body side engaging portion cannot be seen from the outside of the opening, and the appearance of the engraving sword is improved.

  According to a sixth aspect of the present invention, the main body portion side engaging portion is provided at a position where the main body portion engaging portion is engaged with the protective member side engaging portion when the protective member is disposed at a position functioning as the protective member. The engraving knife according to any one of the second to fifth aspects.

  In the sixth aspect, when the protective member is disposed at a position that functions as the protective member, the protective member side engaging portion and the main body portion side engaging portion are engaged, so the protective member is disposed near the blade. In this state, the protective member can be fixed to the main body. Therefore, the protective member that is disposed near the blade and protects the user's body from the blade does not move carelessly. As a result, the user can use the sword with confidence.

  According to a seventh aspect of the present invention, the main body portion side engaging portion is provided at a position where the main body portion engaging portion engages with the protective member side engaging portion when the protective member is disposed at a position that functions as the protective member. Is provided with a raised part on the side of the protective member that is raised on the side opposite to the operating part, and a raised part on the side of the main body that engages with the raised part on the side of the protective member is provided on the main body, and the protective member is retracted from the blade. When the protective member side raised portion is moved to the position, the most raised portion of the protective member side raised portion passes through and engages with the most raised portion of the main body side raised portion. The sword of any of the aspects.

In the seventh aspect, the protective member is provided with a protective member side raised portion that protrudes on the side opposite to the operation portion, and the main body portion is provided with the main body portion side raised portion. Then, when the protective member is moved along the main body part to the position where the protective member is retracted from the blade, the most raised part of the raised part on the protective member side passes through while being pressed by the most raised part of the raised part on the main body side. As a result, the movement of the protective member relative to the main body is prevented.
Further, when the operating portion is pressed toward the blade edge with a force that allows the most raised portion of the protective member side raised portion to pass through the most raised portion of the main body side raised portion, the protective member side raised portion and the main body side raised portion Can be released.
At this time, since it is not necessary to press and deform the protective member toward the inner space side or the groove inner side of the main body, the durability of the protective member is improved.

  A related eighth aspect is that the main body side engaging portion is provided at a position that can be engaged with the protective member side engaging portion when the protective member is disposed at a position retracted from the blade. The engraving sword according to any one of the second to seventh aspects.

  In the eighth aspect, when the protective member is disposed at a position retracted from the blade, the protective member side engaging portion engages with the main body portion side engaging portion. Therefore, while the user who does not need the protective member is using the sword, the protective member does not move to the blade side, and a good feeling of use can be obtained.

  The engraving sword of the present invention is movable along the main body portion between a position functioning as the protective member and a position retracted from the blade in a state where the protective member is attached to the main body portion. Therefore, when using the engraving sword, a user who finds it difficult to use the protective member near the blade can retreat the protective member from the blade only by moving the protective member along the main body. . At this time, since the protection member is maintained attached to the main body, it is possible to avoid a situation where the protection member is lost while the engraving sword is used. Further, when it is desired to protect the user's body from the blade, the protective member can be disposed near the blade only by moving the protective member along the main body portion to a position that functions as the protective member. That is, the user can use the engraving knife safely by arranging the protective member at a position that functions as the protective member.

It is the perspective view seen from the blade edge | tip side diagonally upward of the engraving sword which implemented this invention, and shows the state which the protection member has protected the blade. In FIG. 1, it is a perspective view of the engraving sword in the state which accommodated the protection member in the main-body part. It is a disassembled perspective view of the engraving sword of FIG. It is the perspective view which turned the engraving sword of FIG. 1 upside down, and was seen from the handle bottom side diagonally upper direction, and shows the state by which the protection member is arrange | positioned near the blade. In FIG. 4, it is a perspective view of the engraving sword in the state which accommodated the protection member in the main-body part. FIG. 5 is an exploded perspective view of the engraving sword of FIG. 4. (A) is a side view of a protection member, (b) is a bottom view of the protection member, and (c) is a front view of the protection member. It is AA sectional drawing of the engraving knife of FIG. 1, and shows the state by which the protection member is arrange | positioned near the blade. It is BB sectional drawing of the engraving sword of FIG. 2, and shows the state which accommodated the protection member in the main-body part. It is the figure which planarly viewed the inside of the upper half part of the main-body part of FIG. It is the figure which planarly viewed the inside of the lower half part of the main-body part of FIG. (A) is the A section enlarged view of FIG. 3, the engagement protrusion provided in the edge part side edge part of the upper half part of the main-body part of the engraving sword shown in FIG. 1, and the engagement recessed part of a lower half part (B) is the perspective view which expanded D part of (a), and also fractured | ruptured partially. It is the perspective view which expanded and further partially fractured the B section of FIG. 6, and shows the site | part which fastens the upper half part and lower half part of the main-body part shown in FIG. It is the perspective view which expanded and further partially fractured | ruptured the C section of FIG. 6, and was drawn from the blade edge | side. FIG. 10 is a cross-sectional perspective view showing the engagement relationship between the protective member and the main body in the state shown in FIG. 9. It is a cross-sectional perspective view which shows the engagement relationship of the protection member and main-body part in the state shown in FIG. FIG. 9 is a partial enlarged cross-sectional view of a handle bottom portion of a carved sword different from FIG. 8, showing a state in which the protective member is moving to the handle bottom side. FIG. 18 is a partially enlarged cross-sectional view of the handle bottom portion of the engraving sword showing a state in which the protection member moves to the handle bottom side and the protection member protruding portion engages with the main body side protruding portion in FIG. It is a disassembled perspective view of the engraving knife which implemented this invention different from FIG. FIG. 20 is a perspective view of the engraving sword in a state where the engraving sword of FIG. 19 is assembled and the protection member is disposed near the blade. In FIG. 20, it is a perspective view of the engraving sword which shows the state in the middle of accommodating a protection member in a main-body part. In FIG. 20, it is a perspective view of the engraving sword which shows the state by which the protection member was fully accommodated in the main-body part. FIG. 21 is a perspective view of a sword different from the sword shown in FIGS. 1 and 20. It is the fragmentary perspective view which looked at the opening of the sword of FIG. 23 from the inner side. In FIG. 24, it is a fragmentary perspective view which shows the state which the protection member side engaging part engaged with the main-body part side engaging part provided in opening. FIG. 24 is a perspective view of another engraving sword different from the engraving sword shown in FIGS. 1, 20, and 23, and is a perspective view seen obliquely from the upper side of the blade tip side, and (a) is a protective member disposed around the blade (B) shows the state which accommodated the protection member in the main-body part. It is the disassembled perspective view seen from the diagonally upper side of the blade edge | side of the engraving sword of FIG. It is the disassembled perspective view seen from the diagonally lower side of the handle bottom side of the engraving sword of FIG. (A) is the perspective view which looked at the upper half part of the engraving sword of FIG. 27 by moving the viewpoint further upward, and (b) is the upper part of the engraving sword of FIG. 28 further downward. It is the perspective view seen by moving a viewpoint. 26A is a plan view, FIG. 26B is a side view, and FIG. 26C is a bottom view of the protection member of the engraving sword of FIG. FIG. 27 is an exploded side view of the engraving sword of FIG. 26. It is a vertical side view of the engraving sword of FIG. 26, (a) has shown the state in which the protection member was accommodated in the main-body part, (b) moved the protection member to the blade edge | side, and protection member side engagement The state immediately before the part engages with the main body side engaging part is shown. (C) is a state in which the protective member further moves to the blade edge side from the state of (b) and the protective member side engaging part is engaged with the main body side. The state in the middle of engaging with a part is shown, (d) has shown the state with which the protection member side engaging part was engaged with the main body side engaging part. It is the front view which looked at the engagement site | part of the upper half part engaged with a protection member and a protection member only by seeing the engraved sword of FIG.32 (d) from the blade-tip side.

Hereinafter, description will be given with reference to the drawings.
As shown in FIGS. 1 to 3, the engraving sword 1 includes a main body 2, a protection member 3, and a blade 4. In FIG. 1 and the like, a flat sword is shown as the blade 4, but various blades such as a stamp sword, a round sword, and a triangular sword other than the flat sword may be used. Hereinafter, each configuration will be described in order.

  The main body 2 is configured by combining two halved members, an upper halved portion 2a and a lower halved portion 2b, which function as a casing of the engraving sword 1. For convenience of description, the vertical direction of each member is reversed in FIGS. 1 to 3 and FIGS. 4 to 6. The cross section of the main body 2 has a shape that can be easily held by a user, such as a cylinder or an elliptical cylinder, and the cross section of the upper half 2 a occupies about half of the cross section of the main body 2.

  As shown in FIGS. 6 and 10, a flat portion 69 is provided in the upper half portion 2a. The flat portion 69 is provided with a central protruding portion 65 that protrudes from the blade edge side to the lower half portion 2b side from the handle edge side. The central protruding portion 65 protrudes from the flat portion 69, and the protruding height is different for each part. That is, the central protrusion 65 is formed with a flat portion 65a, an inclined portion 65b, a flat portion 65c, an inclined portion 65d, and a flat portion 65e in this order from the blade edge side. Among these, the protrusion height of the flat part 65e on the handle bottom side is the highest, and then the flat part 65a and the flat part 65c are configured in this order. The flat part 65a and the flat part 65c are connected by the inclined part 65b. The flat portion 65c and the flat portion 65e are connected by an inclined portion 65d. Therefore, the inclination directions of the inclined portion 65b and the inclined portion 65d are different.

  The insertion portion 11 is provided on the flat portion 65 a that is closest to the cutting edge of the central protruding portion 65. The insertion part 11 has a rectangular parallelepiped shape and protrudes from the flat part 65a. On the lower surface 11 b (surface on the lower half portion side) of the insertion portion 11, the engagement convex portion 17 is raised. The engagement convex part 17 is a thin plate-shaped part formed in the lower surface 11b. An opening 11 a is formed on the side surface of the insertion portion 11 on the blade edge side. The opening 11 a is a hole extending from the blade edge side to the handle bottom side, and is a hole for fixing the blade 4.

  Further, a longitudinal groove 18 shown in FIGS. 6 and 13 is formed on the side surface 11c on the handle bottom side of the insertion portion 11. A recess 18 b (FIG. 13) is provided below the bottom surface 18 a of the vertical groove 18. As a result, an engaging portion 18 c is formed in the vertical groove 18. That is, the engaging portion 18c is an edge provided on the handle bottom side (the bottom surface 18a of the longitudinal groove 18) of the insertion portion 11 and formed above the recess 18b.

Next, the flat portion 65e closest to the handle bottom of the central protrusion 65 is provided with a hole 14 that opens to the lower half portion 2b side. The hole 14 is a recess formed in the flat portion 65e. An engagement recess 15d is provided on the side surface of the hole 14 on the blade tip side. That is, the hole 14 is substantially L-shaped when viewed from the side. As a result, the edge 13 is formed on the engagement recess 15d on the blade edge side of the hole 14. In addition, side walls 15a to 15c are provided upright on the left and right sides of the hole 14 and the opening edge on the handle bottom side.
The central protrusion 65 has the configuration described above.

  An engaging protrusion 12, a plurality of protrusions 16, and a protrusion 16a are arranged in this order from the blade edge side on the flat portions 69 on the left and right sides of the central protrusion 65 (FIG. 10). Grooves 76 are provided on the left and right sides of the central protrusion 65. The groove 76 extends from the blade edge side to the handle bottom side along the central protrusion 65.

  As shown in FIGS. 12A and 12B, the engaging protrusion 12 extends downward (lower half 2b side), and the tip 12a of the engaging protrusion 12 protrudes toward the blade edge. ing. Furthermore, the engagement protrusion 12 has elasticity, and can be slightly elastically deformed when pressed to the handle bottom side (rear side).

As shown in FIGS. 6 and 10, a plurality of protrusions 16 are arranged side by side in the front-rear direction on the handle bottom side (rear side) of the engagement protrusion 12 of the upper half portion 2 a. The protrusion 16 has a rectangular parallelepiped shape extending from the front side (blade edge side) to the rear side (handle end side). Furthermore, the protrusion 16a is arrange | positioned rather than the some protrusion 16 which comprises the row | line | column at the handle | bottom end side. The protrusion 16 a has a rectangular parallelepiped shape that is wider in the left-right direction than the protrusion 16.
In the upper half portion 2a, an engaging protrusion 12, a plurality of protrusions 16, and a protrusion 16a are disposed in order from the blade edge side along the left and right sides of the central protrusion 65.

  Although not particularly essential as the engraving sword 1 in terms of configuration, an elastic member 34 is provided on the surface of the upper half portion 2a. The elastic member 34 is a thin plate member made of an elastic material (synthetic rubber or the like). The elastic member 34 exhibits a function of reducing the pressure applied to the fingertip when the user uses the sword 1. By providing the elastic member 34, the user can easily continue the engraving work for a long time.

Next, the lower half 2b of the main body 2 will be described.
The lower half part 2b is combined with the upper half part 2a and integrated to form the main body part 2. The cross section of the lower half 2b occupies about half of the cross section of the main body 2 in the same manner as the upper half 2a.

  The cross section of the lower half 2b of the half-like shape has a shape in which the central portion is recessed and the left and right sides are raised. As shown in FIGS. 3 and 11, a flat portion 66 extending from the blade edge side to the handle bottom side is provided at the center portion of the lower half portion 2 b. Side walls 29 are provided on both the left and right sides of the flat portion 66 so as to protrude from the cutting edge side to the handle bottom side toward the upper half portion 2a. First, the flat part 66 will be described, and then the side wall 29 will be described.

  The flat part 66 is provided from the cutting edge side of the lower half part 2b to the handle bottom side. In the vicinity of the edge of the flat portion 66 on the cutting edge side, an engagement concave portion 20 that opens to the upper half portion 2a side is provided. The shape of the opening of the engagement recess 20 is a rectangular shape extending from the blade edge side to the handle bottom side, and a rectangular parallelepiped space is formed inside the engagement recess 20.

  An engaging projection 22 that protrudes toward the upper half portion 2a is provided on the flat portion 66 on the handle bottom side of the engaging recess 20. At the tip of the engagement protrusion 22, an engagement portion 22 a that protrudes toward the blade edge side (forward) is provided.

  Further, an opening 26 is provided in the flat portion 66 on the handle bottom side of the engagement protrusion 22. The opening 26 is a long hole penetrating the inside and outside of the lower half 2b. That is, the opening 26 is a long hole extending from the cutting edge side toward the handle bottom side.

An engaging projection 23 is provided on the flat portion 66 on the handle bottom side further than the opening 26. Similar to the engagement protrusion 22, the engagement protrusion 23 protrudes toward the upper half portion 2 a. In addition, an engagement portion 23 a that protrudes toward the blade edge is provided at the tip of the engagement protrusion 23.
The flat portion 66 has the above-described configuration.

Next, the side wall 29 of the lower half part 2b will be described.
As shown in FIGS. 3 and 11, the pair of side walls 29 are disposed opposite to the left and right sides of the flat portion 66. The side wall 29 is a wall extending from the cutting edge side of the lower half portion 2b to the handle bottom side.

The side wall 29 is provided with a recess 21, an edge portion 28, a housing portion 67, a guide portion 19, and a guide wall 68.
The concave portion 21 is a hole that opens toward the upper half portion 2 a provided in the vicinity of the end portion of the side wall 29 on the cutting edge side. Further, a hole 21b is provided in the end face of the side wall 29 on the blade edge side. The hole 21b and the recess 21 communicate with each other inside. Therefore, a columnar engagement piece 21 a is formed on the edge of the side wall 29 on the cutting edge side.

  An edge portion 28 and a housing portion 67 are provided on the surface of the side wall 29 on the upper half portion 2 a side. The edge portion 28 and the accommodating portion 67 are formed on the handle bottom side with respect to the concave portion 21 of the side wall 29. The edge portion 28 is disposed on the outermost side in the left-right direction of the lower half portion 2b, and is further a portion disposed on the uppermost half portion 2a side. The accommodating portion 67 is an elongated flat portion that is disposed on the inner side of the edge portion 28 and extends from the blade edge side to the handle bottom side. That is, the accommodating portion 67 is a portion that is formed inside the edge portion 28 and is recessed from the edge portion 28. The edge portion 28 and the accommodating portion 67 have the same length, and both extend from the blade edge side to the handle bottom side, but do not reach the end portion on the handle bottom side. The edge portion 28 is continuous with the concave portion 21 disposed on the blade edge side.

  Next, the guide wall 68 extends from the edge of the side wall 29 toward the handle edge, and forms an inclined surface between the flat portion 66 and the accommodating portion 67. The wall surface at the end of the guide wall 68 on the handle bottom side constitutes the stop wall 27.

  A guide portion 19 having a lower height from the flat portion 66 than the guide wall 68 is provided on the handle bottom side of the guide wall 68. The guide portion 19 is a flat surface with a narrow left and right width that extends to the handle bottom side following the guide wall 68. A stop wall 31 is formed at the end of the guide portion 19 on the handle bottom side. That is, the guide portion 19 is an elongated flat surface formed between the stop wall 27 and the stop wall 31.

  On the guide part 19, a front protrusion 24 and a rear protrusion 25 projecting toward the upper half part 2a are provided. The front protrusion 24 is provided closer to the cutting edge than the rear protrusion 25. An upright wall 24a is provided on the blade tip side of the front protrusion 24, and an inclined wall 24b is provided on the handle bottom side. The upright wall 24a faces the stop wall 27 at a predetermined interval. The upright wall 24 a and the stop wall 27 constitute a blade edge side engaging portion 56. An inclined wall 25a is provided on the cutting edge side of the rear protrusion 25, and an inclined wall 25b is provided on the handle bottom side. The inclined wall 25b of the rear protrusion 25 is opposed to the stop wall 31 at a predetermined interval. The slanted wall 25b of the rear protrusion 25 and the stop wall 31 constitute a handle bottom side engaging portion 57.

Next, the protection member 3 will be described.
As shown in FIG. 7A, the protection member 3 has a leaf spring portion 7, a protection member main body portion 8, and a tip end portion 9. As shown in FIG. 7B, the protection member 3 has an annular structure in which the protection member main body 8, the tip 9, and the leaf spring 7 are connected.

  The tip 9 has a substantially U shape when viewed from the bottom (or viewed from above), and is disposed on the blade edge side (left side as viewed in FIG. 7B) of the protection member 3. Moreover, the front-end | tip part 9 is exhibiting the shape curved back to the upper half part 2a side (upward side seeing in Fig.7 (a)).

  The protective member main body 8 is composed of two elongated members 8a and 8b having a transverse section bent into a substantially U shape. That is, the long members 8a and 8b have bent portions 35a and 35b extending in the longitudinal direction as shown in FIG. By providing the bent portions 35a and 35b, the strength of the long members 8a and 8b is improved. The long members 8a and 8b are provided with inclined surfaces 64a and 64b. The inclined surfaces 64a and 64b are inclined surfaces facing downward, and are surfaces extending from the blade edge side to the handle bottom side. The end portions of the long members 8a and 8b on the blade edge side are connected to the tip portion 9 respectively.

  The leaf spring portion 7 includes a flat plate portion 36, a pair of ribs 37, and an operation portion 38. Two ribs 37 and an operation portion 38 are installed on the lower surface of the flat plate portion 36. The operating portion 38 is provided with a base portion 33, a protrusion 6, and a protective member side engaging portion 5 protruding to the left and right sides.

  The rib 37 has two orthogonal sides, one of which is fixed to the lower surface of the flat plate portion 36. The base portion 33 is formed integrally with the flat plate portion 36, and is a portion having a shape such as a rounded corner of a rectangular parallelepiped projecting to the lower surface side of the flat plate portion 36. One side of the rib 37 is fixed to the side surface 33a of the base portion 33 on the cutting edge side. That is, two orthogonal sides of each rib 37 are fixed to the lower surface of the flat plate portion 36 and the side surface 33 a of the base portion 33.

  Protective member side engaging portions 5 are mounted on the left and right side surfaces 33b and 33c of the base portion 33, respectively. As shown in FIG. 3, an inclined surface 5 a is formed on the cutting edge side on the lower half portion 2 b side of the protective member side engaging portion 5.

  The protrusion 6 protrudes from the center of the lower surface 33 d of the base portion 33. That is, the protrusion 6 is a protrusion that protrudes in a direction orthogonal to the protection member side engaging portion 5. The width of the protrusion 6 in the left-right direction is the same as the width of the base 33 and is easy to operate with the tip of the thumb. When the protrusion 6 and the base portion 33 are viewed from the side, it has a substantially T-shape.

  The flat plate portion 36 of the leaf spring portion 7 is connected to the vicinity of the end portion on the handle bottom side of the long members 8 a and 8 b of the protection member main body portion 8. Moreover, since the edge part by the side of the blade edge | tip of elongate member 8a, 8b is connected with the front-end | tip part 9, the protection member 3 exhibits an annular structure. Therefore, the protective member 3 forms the hole 10. As shown in FIG. 7B, the distance between the long members 8 a and 8 b of the protection member main body 8 is larger than the width of the blade 4. Further, the hole 10 extends from the blade edge side to the handle bottom side.

  When the upper half portion 2a and the lower half portion 2b described above are combined with the protective member 3 disposed therebetween, the respective portions are engaged as follows. For convenience of explanation, only the connection between the upper half portion 2a and the lower half portion 2b will be described first, and then the relationship with the protective member 3 will be described.

  When connecting the upper half 2a and the lower half 2b, first, the two engagement protrusions 12 on the blade edge side of the upper half 2a shown in FIG. Are inserted into the two recesses 21, and the tip 12 a of the engagement protrusion 12 is engaged with an engagement piece 21 a formed on the front side of the recess 21 as shown in FIG. That is, by engaging the engagement piece 21a of the concave portion 21 and the tip end portion 12a of the engagement protrusion 12, the upper half portion 2a and the lower half portion 2b are fixed rotatably on the blade edge side.

  Next, the rear side (the handle bottom side) of the upper half portion 2a and the rear side (the handle bottom side) of the lower half portion 2b are brought close to each other with the joint portion of the engagement protrusion 12 and the recess 21 as a fulcrum. That is, both halves are rotated relative to each other about the coupling portion of the engagement protrusion 12 and the recess 21 to bring the handle edges of the halves closer together. As a result, the engaging protrusion 17 of the upper half 2a fits into the engaging recess 20 of the lower half 2b, and the plurality of protrusions 16 (FIG. 6) of the upper half 2a are edges of the lower half 2b. The portions 28 are in close contact with each other along the inner side surface 28a. Then, as shown in FIG. 13, the engagement protrusion 22 of the lower half 2b is engaged with the engagement portion 18c of the vertical groove 18 of the upper half 2a. At that time, the engaging portion 22a of the engaging protrusion 22 abuts on the bottom surface 18a of the vertical groove 18 and bends backward (the handle edge side). When the engaging portion 22a enters the engaging portion 18c (concave portion), the bending of the engaging protrusion 22 is eliminated. As a result, the engagement protrusion 22 and the engagement portion 18c are coupled.

  Further, as shown in FIG. 14, the engaging portion 23a of the engaging protrusion 23 of the lower half portion 2b is engaged with the edge portion 13 of the upper half portion 2a. That is, the engaging portion 23a of the engaging protrusion 23 abuts on the edge portion 13 and is pressed by the edge portion 13 toward the handle bottom, so that the engaging protrusion 23 enters the hole 14 while being bent toward the handle bottom. At that time, the engaging protrusion 23 enters the hole 14 while being guided to the side walls 15a to 15c. And when the engaging part 23a passes the edge part 13, there will be no pressing force to the engaging part 23a, and the engaging part 23a will engage with the engaging recessed part 15d. As a result, the upper half 2a and the lower half 2b are joined.

  At this time, the plurality of protrusions 16 and protrusions 16a of the upper half portion 2a are arranged in the accommodating portion 67 of the lower half portion 2b. That is, the edge portion 28 of the lower half portion 2b is in contact with a portion of the flat portion 69 (FIG. 6) of the upper half portion 2a that is outside of the protrusion 16 in the left-right direction, and at the outside of the protrusion 16 and the protrusion 16a. The side surface contacts the inner side surface 28a of the edge portion 28 of the lower half portion 2b. That is, each protrusion 16, protrusion 16a, and edge part 28 have a guide function when the upper half part 2a and the lower half part 2b are joined.

  Further, the part (side walls 15a, 15c) on the handle bottom side of the central projecting portion 65 of the upper half portion 2a is in close contact with the inner side surface 29a of the side wall 29 of the lower half portion 2b. Further, the central wall 30 that is the part on the handle bottom side of the flat portion 66 of the lower half 2b abuts the substantially U-shaped end surfaces of the side walls 15a to 15c on the handle bottom side of the upper half 2a.

  When the upper half 2a and the lower half 2b are joined, the engaging projection 17 of the upper half 2a just fits into the engaging recess 20 of the lower half 2b. The halves 2b cannot move in the front-rear direction, and the positions of both halves in the front-rear direction are fixed by the engagement of the engagement protrusions 17 and the engagement recesses 20.

  In addition, the plurality of protrusions 16 of the upper half portion 2a are closely arranged along the inner side surface 28a of the edge portion 28 of the lower half portion 2b, and the inner side surface 29a (lower half portion 2b) and the side wall 15a, Since 15c (upper half part 2a) closely_contact | adheres, the position of the left-right direction of the upper half part 2a and the lower half part 2b is fixed.

  Further, since the engaging projection 12, the vertical groove 18, and the edge 13 of the upper half 2a engage with the recess 21, the engaging projection 22, and the engaging projection 23 of the lower half 2b, respectively, the upper half 2a and the lower half 2b are firmly fastened. That is, since the front side (blade edge side), the center part, and the rear side (handle end side) of both halves are reliably engaged, the halves are not easily detached.

  When the main body 2 is configured by combining the upper half 2a and the lower half 2b, the guide wall 68 of the lower half 2b and the central protrusion of the upper half 2a are formed in the main body 2. A space partitioned by the portion 65, the flat portion 69, and the groove 76 is formed. This space extends from the cutting edge side to the handle bottom side in the main body 2. And when the protection member 3 is accommodated in the main-body part 2, the protection member 3 moves in this space. At that time, the protective member main body 8 of the protective member 3 is engaged with the groove 76. As a result, the groove 76 can exhibit a guide function when reciprocating between the cutting edge side and the handle bottom side of the protection member 3.

  The upper half 2a and the lower half 2b are actually joined after the protective member 3 is disposed between them. An internal space 32 is formed between the upper half part 2a and the lower half part 2b that are combined and integrated. The internal space 32 is formed by the central projecting portion 65 and the flat portion 69 of the upper half portion 2a and the side wall 29 of the lower half portion 2b. The internal space 32 is a space that can accommodate the protection member 3. The internal space 32 extends in the longitudinal direction (front-rear direction) of the main body 2.

  Before joining the upper half 2a and the lower half 2b, the protective member 3 is disposed on the lower half 2b. In that case, the inclined surfaces 64a and 64b of the elongate members 8a and 8b of the protection member 3 are arrange | positioned on the guide wall 68 of the lower half part 2b. The long members 8 a and 8 b can slide along the guide wall 68.

  Further, the protective member side engaging portion 5 of the protective member 3 is disposed on the guide portion 19. That is, the protection member side engaging portions 5 provided on both the left and right sides of the protection member 3 are simultaneously placed on the two guide portions 19 disposed to face each other.

  The width in the front-rear direction of the protection member side engaging portion 5 is the distance between the upright wall 24a of the front projection 24 and the stop wall 27 in the blade edge side engaging portion 56 shown in FIG. 9, or the handle bottom side engaging portion shown in FIG. 57, the distance between the inclined wall 25b of the rear projection 25 and the stop wall 31 is slightly smaller. Therefore, the protective member side engaging portion 5 can be disposed between the stop wall 27 and the front protrusion 24 or between the rear protrusion 25 and the stop wall 31. Further, the protective member side engaging portion 5 is movable along the guide portion 19.

  The protrusion 6 of the protective member 3 is disposed in the opening 26 of the lower half 2b. That is, the user can operate the protrusion 6 from the outside of the engraving sword 1. The width of the protrusion 6 is smaller than the width of the opening 26, and the protrusion 6 can move along the long hole-shaped opening 26.

The protection member 3 attached to the main body 2 performs the following operation in the internal space 32.
That is, the protection member main body 8 (elongate members 8a, 8b) of the protection member 3 is disposed between the guide wall 68 of the lower half 2b and the central protrusion 65 of the upper half 2a, so that the front and rear direction ( It is constrained to be movable only in the blade edge direction and the handle edge direction. That is, the protection member 3 can move in the front-rear direction (the cutting edge direction and the handle edge direction) along the main body 2.

  A stop wall 27 is provided on the cutting edge side of the guide portion 19, and a stop wall 31 is provided on the handle bottom side. Therefore, the protection member side engagement portion 5 of the protection member 3 can reciprocate between the stop wall 27 and the stop wall 31.

  Now, if the protection member side engagement portion 5 of the protection member 3 is between the front protrusion 24 and the rear protrusion 25 on the guide portion 19 and the protection member 3 is moved to the blade edge side (forward), the protection member The side engaging portion 5 moves toward the cutting edge along the guide portion 19 and eventually reaches the inclined wall 24b of the front protrusion 24. Then, the inclined surface 5a of the protective member side engaging portion 5 moves along the inclined wall 24b of the front protrusion 24. As a result, the protective member side engaging portion 5 rides on the front protrusion 24, and the leaf spring of the protective member 3 The part 7 (biasing means) is elastically deformed. That is, the protective member main body 8 (elongate members 8 a and 8 b) of the protective member 3 is fixed in the vertical direction in the internal space 32, and only the leaf spring portion 7 is displaced in the vertical direction with respect to the main body 2. Is possible.

  When the protection member 3 further moves to the blade edge side, the protection member side engagement portion 5 passes through the front protrusion 24, and the protection member side engagement portion 5 is moved along the upright wall 24a by the elastic force of the leaf spring portion 7. It moves on the guide part 19. As a result, the protection member side engagement portion 5 is disposed between the upright wall 24a and the stop wall 27 (the blade edge side engagement portion 56) (FIG. 16), and the protection member 3 is engaged with the blade edge side engagement portion 56. Therefore, it cannot move back and forth with respect to the main body 2. That is, the position of the protective member 3 is fixed in a state where the tip 9 of the protective member 3 protrudes with respect to the main body 2, and is close to the cutting edge 4 a of the blade 4 as shown in FIGS. The protection member 3 (tip portion 9) is disposed.

  As shown in FIG. 1, when the protection member 3 is mounted on the main body 2, the blade 4 is disposed near the center in the vertical direction of the protection member main body 8. Moreover, the front-end | tip part 9 of the protection member 3 is curving, and the front-end | tip part 9 is arrange | positioned at the upper surface side (the side used as an upper surface at the time of engraving sword use) of the blade 4. FIG. As a result, the distal end portion 9 of the protection member 3 is separated upward from the blade 4 (blade tip 4a). Therefore, when the protection member 3 (tip portion 9) is disposed near the blade edge 4a, the blade edge 4a can be applied to the object to be engraved and engraved.

  At this time, the user of the engraving sword 1 can visually observe the cutting edge 4 a through the hole 10 of the protection member 3. If the protection member 3 is made of a transparent material, the object to be engraved (engraved part) can also be visually recognized through the protection member 3 and can be easily engraved.

  When the engraving work is performed in the state shown in FIG. 1, the cutting edge 4a of the blade 4 is protected by the tip 9 of the protection member 3, so that the user avoids accidental contact with the cutting edge 4a. Can do. Further, when the protective member side engaging portion 5 abuts against the stop wall 27 (FIG. 9), the protective member 3 is prevented from moving toward the blade edge (dropping off from the main body portion 2). Furthermore, when the protective member side engaging portion 5 abuts against the upright wall 24a of the front protrusion 24, the protective member 3 is prevented from moving backward (stored in the main body portion 2). Therefore, the cutting edge 4a of the blade 4 is not exposed at a timing not intended by the user, and the user can use the engraving knife 1 with confidence.

  The smaller the distance from the distal end portion 9 of the protection member 3 to the cutting edge 4a of the blade 4, the harder the cutting edge 4a touches the user's finger or the like. In this case, the cutting edge 4a may be applied to the object to be engraved. The range of angles that can be made becomes narrow, making it difficult to engrave. Conversely, if the distance from the tip 9 of the protection member 3 to the cutting edge 4a of the blade 4 is set large, the angle range in which the cutting edge 4a can be applied to the object to be engraved is expanded and the engraving work is facilitated. 4a becomes easy to touch a user's finger | toe. Therefore, the distance from the front-end | tip part 9 to the blade edge | tip 4a is set so that the blade edge | tip 4a can make it difficult to touch a user's finger | toe etc., maintaining the favorable usability of the engraving sword 1. FIG. The setting of this distance can be adjusted by the way the tip 9 of the protective member 3 is warped (the degree of warping).

  Further, in the example shown in FIG. 1, a state in which the tip portion 9 of the protection member 3 slightly protrudes from the tip of the blade edge 4 a is depicted, but the difference between the two protrusion amounts can be reduced or vice versa. The distance from the front-end | tip part 9 of the protection member 3 to the blade edge | tip 4a can also be adjusted by enlarging. This adjustment can be realized by changing the engagement positions of the protection member side engagement portion 5 and the blade edge side engagement portion 56 in the front-rear direction.

  That is, the protrusion amount of the protection member 3 toward the cutting edge increases as the cutting edge side engaging portion 56 of the lower half 2b is disposed toward the cutting edge. Therefore, it is preferable to determine the installation position of the blade edge side engaging portion 56 in accordance with the user's preference and manufacture the lower half portion 2b. Moreover, if the installation position of the protection member side engaging part 5 in the protection member 3 in the front-rear direction is changed, the protruding amount of the tip part 9 of the protection member 3 to the blade edge side is also changed. For example, when the protection member 3 is manufactured in a state where the position of the protection member side engagement portion 5 is moved to the distal end portion 9 side, when the protection member side engagement portion 5 is engaged with the blade edge side engagement portion 56, The front end 9 of the protection member 3 is retracted to the handle bottom side (rear side).

Next, the case where the user who feels that the engraving work is difficult when the protective member 3 protrudes uses the engraving knife 1 will be described.
In this case, since the protection member 3 is unnecessary, the whole or most of the protection member 3 is accommodated in the main body 2. First, the user presses the projection 6 (operation portion 38) of the protection member 3 to displace the protection member side engagement portion 5 to a position where it does not engage with the upright wall 24a of the front projection 24. Then, when the projection 6 is slid as it is rearward (the handle bottom side), the protective member side engaging portion 5 can move backward beyond the front projection 24. When the protective member side engaging portion 5 exceeds the upright wall 24a, the pressing of the protrusion 6 may be released. That is, the protective member side engaging portion 5 slides on the front protrusion 24 and moves rearward, and eventually approaches the guide portion 19 along the inclined wall 24b. At this time, the deformation amount of the leaf spring portion 7 (biasing means) is also reduced, and when the protection member side engaging portion 5 moves rearward from the inclined wall 24b, the leaf spring portion 7 returns to its original shape (posture). .

  Then, when the user pulls the protrusion 6 as it is toward the handle bottom, the protective member side engaging portion 5 moves along the inclined wall 25a on the front side of the rear protrusion 25. At that time, the leaf spring portion 7 is elastically deformed. However, when the protection member side engagement portion 5 moves along the inclined wall 25b on the rear side, the leaf spring portion 7 returns to the original shape, and the protection member side engagement portion. 5 comes into contact with the stop wall 31 and engages with the handle bottom side engaging portion 57 (FIG. 15), and the protection member 3 stops. At this time, the protection member 3 is accommodated in the main body 2 as shown in FIGS.

  When the protective member side engaging portion 5 is engaged with the handle tail side engaging portion 57, the protective member 3 accommodated in the main body portion 2 does not inadvertently project and move from the main body portion 2. Further, when the protective member 3 is moved to the blade edge side, the user releases the engagement between the protective member side engaging portion 5 and the rear protrusion 25 (the handle bottom side engaging portion 57) only by pushing the protrusion 6 slightly. can do. That is, since the inclined wall 25b is provided on the handle bottom side of the rear protrusion 25, the inclined surface 5a of the protective member side engaging portion 5 is easily along the inclined wall 25b of the rear protrusion 25, and the protective member side engaging portion 5 is provided. Can pass through the rear protrusion 25 smoothly.

  The engraving sword 1 is used by pressing the upper surface with a finger and pressing it against an object to be engraved. However, since the protrusion 6 is provided on the lower surface side of the engraving sword 1, it does not interfere with the engraving work. That is, the user can sculpt by pressing the upper surface side of the engraving sword 1 provided with the protective member 3 with a finger.

  Here, in the protection member 3, the protection member 3 can be configured in another form instead of the configuration in which the protrusion 6 is pushed in and the protection member side engagement portion 5 is displaced. That is, the protective member 3 is pressed from the left and right directions so that it can be restored, and the protective member side engaging portions 5 are brought closer to each other. And both the protection member side engaging parts 5 are temporarily displaced inside the parallel guide part 19. FIG. As a result, both the protective member side engaging portions 5 can pass through the front protrusion 24 or the rear protrusion 25 provided on the guide portion 19. When the force that presses the protective member 3 is released, the interval between the protective member side engaging portions 5 is restored, and the protective member side engaging portion 5 is disposed on the guide portion 19.

Next, a modified example of the structure of the carved sword on the handle bottom side will be described with reference to FIGS. 17 and 18.
In the form shown in FIGS. 17 and 18, the rear protrusion 25 is not provided on the guide portion 19. Instead, the raised portion 39 is provided in the central projecting portion 65 of the upper half portion 2a. The raised portion 39 is provided at a boundary portion between the inclined portion 65d and the flat portion 65e of the central projecting portion 65. The raised portion 39 is smoothly continuous with the handle bottom side end portion of the inclined portion 65d, protrudes slightly toward the lower half portion 2b side than the flat portion 65e, and smoothly continues with the blade edge side end portion of the flat portion 65e. ing.

  On the other hand, the protection member 3 is provided with a raised portion 3a. The raised portion 3 a is provided on the side opposite to the protrusion 6. That is, the raised portion 3a is provided so as to rise toward the upper half portion 2a when the protective member 3 is disposed in the main body portion 2. The raised portion 3a is disposed above the protective member side engaging portion 5 in FIG.

  When the protective member 3 moves from the state shown in FIG. 17 to the handle bottom side (rightward in FIG. 17), the raised portion 3a of the protective member 3 eventually becomes the inclined portion 65d or raised portion of the central projecting portion 65 of the upper half 2a. 39 is contacted. When the protective member 3 further moves to the handle bottom side, the protective member 3 is pressed in the vertical direction by the guide portion 19 and the raised portion 39.

  That is, when viewed from the side as shown in FIG. 17, the distance L1 from the lower surface of the protective member side engaging portion 5 (the surface in contact with the guide portion 19) to the most raised portion of the raised portion 3a is. The distance from the guide portion 19 to the most raised portion of the raised portion 39 is larger than the distance L2. Therefore, when the protection member 3 moves to the end portion on the handle bottom side of the internal space 32, the protection member 3 is pressed in the vertical direction by the raised portion 39 and the guide portion 19, and the protection member 3 is compressed and deformed. That is, at this time, the distance L1 matches the distance L2. Further, when the raised portion 3a of the protective member 3 passes through the raised portion 39, the pressure is released and the protective member 3 returns to its original shape, and a gap is formed between the raised portion 3a and the flat portion 65e of the central projecting portion 65.

  In this state, even if the protective member 3 tries to move toward the cutting edge, the raised portion 3 a of the protective member 3 and the raised portion 39 on the main body 2 side come into contact with each other, and the protective member 3 receives resistance from the main body 2. Therefore, the protection member 3 cannot move beyond the raised portion 39 to the blade edge side. That is, the protection member 3 is fixed at a position retracted from the blade 4 (blade edge 4a).

  Here, when the protection member 3 is moved to the cutting edge side, the user of the engraving sword presses the protrusion 6 (operation unit 38) to the cutting edge side. That is, the user compresses and deforms the protective member 3 and presses the protrusion 6 toward the blade edge with a force that can match the distance L1 and the distance L2. As a result, the raised portion 3a of the protective member 3 and the protective member side engaging portion 5 come into contact with the raised portion 39 on the main body portion 2 side, and move to the blade edge side while receiving resistance from the raised portion 39 and the guide portion 19. Eventually, the raised portion 3a passes through the raised portion 39, the raised portion 3a is separated from the raised portion 39 and the inclined portion 65d, the pressing force acting on the protective member 3 is released, and the protective member 3 returns to its original shape. Thereafter, the protection member 3 can smoothly move to the position of the front protrusion 24 toward the blade edge side.

  In this way, when the raised portion 3a is provided on the protective member 3 side and the raised portion 39 is provided on the main body 2 (upper half portion 2a) side, deformation of the leaf spring portion 7 of the protective member 3 is reduced. That is, when the protective member 3 is retracted from the blade 4, the leaf spring portion 7 is not deformed. As a result, the durability of the leaf spring portion 7 is improved.

  As described above, the engraving sword 1 embodying the present invention can project the protective member 3 from the main body 2 or store it in the main body 2 by a simple operation as necessary. Further, when the protection member 3 is not used, the entire protection member 3 or most of the part can be stored in the main body 2, so that the protection member 3 is not lost.

  Next, a sword according to another embodiment of the present invention will be described with reference to FIGS. 19 to 22, for convenience of explanation, the sword 40 is depicted with the lower surface 61 facing upward, but the sword 40 is actually used in a posture in which the lower surface 61 faces downward. The

The engraving sword 40 includes a main body 41 and a protection member 42.
The main body 41 includes a housing 43 that forms an outer shell and a core 44 that is disposed inside the housing 43.

  The housing 43 has a distal end portion 43a on the distal end side (blade edge side) and a grip portion 43b on the handle bottom side. The distal end portion 43a is a member having a substantially cylindrical shape. Further, the cylindrical side wall of the distal end portion 43a is cut to form an opening 45a. In other words, the opening 45 a is formed on the lower surface 61 side of the housing 43 so as to extend in the longitudinal direction of the distal end portion 43 a. The outer shape of the end portion on the handle bottom side of the distal end portion 43a has a rectangular shape. That is, the cross section of the tip portion 43a smoothly changes from a cylindrical shape to a square cylindrical shape from the middle.

  The grip part 43b has a rectangular tube shape. An opening 45b is provided on one side surface (lower surface 61) of the grip portion 43b. The opening 45b extends in the longitudinal direction of the gripping portion 43b to a portion in the middle from the blade edge side end portion of the gripping portion 43b to the handle bottom side end portion. A front notch 47 is provided on each of the opposing edges 58 and 59 of the opening 45b. The front cutouts 47 of the edges 58 and 59 are opposed to each other.

  Each edge 58, 59 is provided with a rear notch 48. The rear cutout 48 is provided closer to the handle bottom than the front cutout 47. The rear cutouts 48 of the edges 58 and 59 are also opposed. Each of the front notch 47 and the rear notch 48 is a part where the width of the opening 45b is partially increased. When the tip portion 43a and the grip portion 43b are connected, the opening 45a and the opening 45b are continuous. The opening 45a and the opening 45b have the same width. And the front-end | tip part 43a and the holding part 43b are couple | bonded by adhesion | attachment, and the housing | casing 43 is comprised. An internal space 60 that communicates with the openings 45 a and 45 b is formed inside the housing 43.

  The core 44 has a substantially cylindrical shape, and a part thereof is cut in the longitudinal direction to form a flat portion 44a. The flat portion 44a extends in the longitudinal direction of the core 44 and continues to the flat portion 44b via the inclined portion 49 in the middle. The flat portion 44b has a smaller dimension in the height direction than the flat portion 44a.

  A hole 44c for mounting the blade 4 is provided on the end face of the core 44 on the blade tip side.

  The core 44 is accommodated in the internal space 60 of the housing 43. Although not shown, a portion of the core 44 opposite to the flat portion 44 a is bonded to the housing 43 in the internal space 60 of the housing 43. The flat portions 44 a and 44 b of the core 44 are disposed on the openings 45 a and 45 b side of the housing 43.

  When the core 44 and the housing 43 are integrally fixed, a gap 46 (groove) is formed between the core 44 and the housing 43. Further, the distance from the flat portion 44a of the core 44 to the opening 45a (opening on the blade edge side) is relatively small, and the distance from the flat portion 44b to the opening 45b (opening on the handle bottom side) is relatively large. That is, the inclined portion 49 of the core 44 is disposed at the connection portion between the tip portion 43 a and the grip portion 43 b of the housing 43.

Next, the protection member 42 will be described.
The protective member 42 shown in FIG. 19 is depicted by reversing the posture at the time of engraving work of the engraving sword 40 for convenience of depiction. The protection member 42 includes a protection member main body 50 and a leaf spring portion 51.

  As shown in FIG. 19, the protection member main body 50 has side wall parts 62a and 62b. The side wall parts 62a and 62b have a shape obtained by curving a flat plate-like member in an arc shape. The portions on the cutting edge side (front side) of the side wall portions 62a and 62b are connected by a thin tip portion 50a. That is, inclined portions 63a and 63b that are smoothly continuous with the tip portion 50a are provided at the cutting edge side portions of the side wall portions 62a and 62b. The upper edge of the distal end portion 50a (the edge depicted on the lower side in FIG. 19) is arranged in the same plane as the edge portions 55a and 55b, which are the upper edges of the side wall portions 62a and 62b.

  Edges 70a and 70b (edges depicted on the upper side in FIG. 19), which are lower edges of the side wall parts 62a and 62b, are on the way from the handle edge side to the blade edge side (until the inclined parts 63a and 63b). ) Is parallel to the edges 55a, 55b. And in the inclined parts 63a and 63b, the width in the height direction of the side wall parts 62a and 62b is gradually reduced, and the side wall parts 62a and 62b are continuous with the thin tip part 50a disposed at the end part on the blade edge side. The tip 50a is a portion that has a thin cross section and is curved toward the cutting edge to project into a semicircular shape. That is, the edge part on the cutting edge side of the protection member main body 50 has a U shape.

  A thin plate-like leaf spring portion 51 is integrally fixed to the handle bottom end of the edge portions 70a and 70b of the side wall portions 62a and 62b. A pressing portion 53 is provided on the handle bottom side of the lower surface 51 a of the leaf spring portion 51. The pressing portion 53 is a portion that protrudes downward (upward as viewed in FIG. 19) from the lower surface 51 a of the leaf spring portion 51.

  An inclined portion 54 is provided on the handle bottom side of the pressing portion 53. Further, on the left and right side surfaces of the leaf spring portion 51, a protection member side engaging portion 52, which is a protrusion extending in the left-right direction, is provided. The protection member side engagement part 52 is a part where the width in the left-right direction of the leaf spring part 51 partially expands. The distance between the tips of the protective member side engaging portions 52 (that is, the width of the part of the leaf spring portion 51 that is partially expanded) is larger than the width of the openings 45a and 45b of the housing 43, and the opening 45b. The width is smaller than the width of the portion where the front notch 47 and the rear notch 48 are provided. Further, each protection member side engaging portion 52 is formed in a size and a shape that can be engaged with the front cutout portion 47 and the rear cutout portion 48, respectively. Furthermore, the width | variety of the site | part which does not provide the protection member side engaging part 52 of the leaf | plate spring part 51 is smaller than the width | variety of the opening 45b.

The protective member 42 is attached to the main body 41 described above.
First, the inclined portion 54 formed in the leaf spring portion 51 is inserted from the blade edge side of the opening 45 a, and the protection member 42 is sequentially inserted into the gap 46 of the main body portion 41. At that time, the protection member 42 moves in the gap 46 of the main body 41 while the edges 55 a and 55 b of the protection member 42 come into contact with the connecting portion (not shown) of the core 44 and the housing 43. Therefore, the protection member 42 does not rotate with respect to the main body 41 and can move only in the front-rear direction. Further, the protection member 42 is inserted into the gap 46 of the main body 41 in a state where the leaf spring portion 51 of the protection member 42 is pressed against the flat portion 44a of the core 44. At this time, the protection member side engagement portion 52 is opened 45a. The leaf spring portion 51 is elastically deformed toward the core 44 side.

  The inclined portion 54 of the protection member 42 eventually reaches the position of the inclined portion 49 of the core 44. The height of the gap 46 (distance from the opening 45b to the flat portion 44b) increases on the handle bottom side of the inclined portion 49. Therefore, the leaf spring portion 51 is elastically deformed. However, since the leaf spring portion 51 and the core 44 (flat portion 44b) are not in contact with each other, the resistance is reduced and the main body portion 41 is not affected. The protection member 42 can move smoothly in the front-rear direction.

  Then, the protective member side engaging portion 52 comes to the position of the front cutout portion 47 and engages with the front cutout portion 47. That is, the leaf spring portion 51 returns to the original posture by its own elastic force (biasing force), and the protection member side engagement portion 52 engages with the front cutout portion 47. As a result, the protection member 42 is fixed to the main body portion 41 in the front-rear direction. Moreover, the pressing part 53 protrudes outside the opening 45b. FIG. 20 shows a state in which the protective member side engaging portion 52 is engaged with the front cutout portion 47. At this time, the front end portion 50a of the protection member 42 is disposed around the blade 4 (blade edge 4a).

  Next, the pressing portion 53 is pushed into the opening 45b (gap 46) against the elastic force (biasing force) of the leaf spring portion 51, and the protection member side engaging portion 52 and the front notch portion 47 are engaged. When released, the protection member 42 can move in the front-rear direction with respect to the main body 41. The movement toward the front (edge side) is not smooth because it receives a large resistance by the inclined portion 49, but the movement toward the rear (the handle edge side) can be performed smoothly.

  FIG. 21 shows a state in the middle of moving the protective member 42 to the handle bottom side by releasing the engagement between the protective member side engaging portion 52 and the front cutout portion 47. Since the width of the protective member side engaging portion 52 is larger than the width of the opening 45b, the leaf spring portion 51 is deformed to the core 44 side (inside the main body portion 41). Moreover, the front-end | tip part 50a of the protection member 42 moves to the handle | bottom-edge side rather than the blade edge | tip 4a, and the blade edge | tip 4a is exposed a little.

  When the protection member 42 is further moved to the handle bottom side, the protection member side engagement portion 52 comes to the position of the rear cutout portion 48 and engages with the rear cutout portion 48 as shown in FIG. That is, the plate spring portion 51 returns to its original posture by its own elastic force (biasing force), and the protection member side engagement portion 52 engages with the rear cutout portion 48. As a result, the protection member 42 is fixed to the main body portion 41 in the front-rear direction. At this time, the pressing portion 53 protrudes from the opening 45b. Further, most of the protection member 42 is accommodated in the main body 41, and the distal end portion 50 a of the protection member 42 is slightly disposed on the blade tip side from the core 44. That is, the blade edge 4a is exposed.

  Conversely, from the state shown in FIG. 22, when the pressing portion 53 is pressed to disengage the protective member side engaging portion 52 and the rear notch 48, the protective member 42 can be moved to the blade edge side. Although it is possible to move the protective member side engaging portion 52 forward of the front cutout portion 47, the inclined portion 49 prevents the protective member 42 from moving forward, so that the protective member 42 becomes the main body portion 41. It is prevented from falling off. Therefore, it is possible to prevent the protective member 42 from being accidentally dropped from the main body 41.

  In the present embodiment, an example in which the position of the inclined portion 49 and the position of the front cutout portion 47 are separated is shown. However, as soon as the protective member 42 passes through the inclined portion 49, the protective member side engagement portion is connected to the front cutout portion 47. It can also be manufactured so that 52 is engaged.

  Further, as shown in the figure, instead of providing the front side notch portion 47 and the rear side notch portion 48 (that is, a concave portion) in the housing 43 and providing the protective member side engagement portion 52 (that is, a convex portion) on the protective member 42, Two cases of opposing convex portions may be provided on the housing 43, and a concave portion may be provided on the protective member 42 side to engage the two.

  Next, a modification of the engraving sword 40 of FIGS. 19 to 22 will be described with reference to FIGS. 23 to 25. The engraving knife 71 shown in FIG. 23 differs from the engraving knife 40 shown in FIG. 20 only in the form of the opening 45b provided in the main body 41. Therefore, the same reference numerals are used for the same components, and redundant descriptions are omitted.

  As shown in FIG. 23, in the main body portion 41, a pair of elongated flat plate portions 74 are connected by a connecting portion 75 to form an opening 45b. The opening 45b has opposing edges 74b and 74b (FIG. 24) of the flat plate portion 74. As shown in FIG. 24 when the opening 45b is viewed from the inside, a pair of engaging portions 72 are provided on the edges 74b and 74b of the back surface 74a of the flat plate portion 74. In addition, a pair of engaging portions 73 are provided on the back surface 74a at a predetermined distance from the engaging portion 72.

  The engaging portion 72 and the engaging portion 73 are indentations provided on the edge 74 b on the back surface 74 a side of the flat plate portion 74. That is, the engaging portion 73 (72) is only visible from the outside of the engraving sword 71 as shown in FIG.

  The protective member 42 is attached to such a main body 41. As shown in FIG. 24, the protection member side engaging portion 52 of the protection member 42 moves to the handle bottom side in a state where it contacts the back surface 74a of the flat plate portion 74 of the opening 45b. Then, the protection member side engaging portion 52 eventually reaches the position of the engaging portion 72 and engages with the engaging portion 72 as shown in FIG.

  At this time, the leaf spring portion 51 that has been elastically deformed in contact with the back surface 74a returns to a natural state or the amount of deformation decreases. And the protection member 42 is fixed with respect to the main-body part 41, and the front-end | tip part 50a of the protection member 42 is arrange | positioned near the blade edge | tip 4a, and exhibits the function as a protection member.

  Further, when the pressing portion 53 (operation portion) is pushed in, the protective member side engaging portion 52 is separated from the engaging portion 72 and the engagement is released. As a result, the protection member 42 can move with respect to the main body 41. FIG. 23 shows a state where the protection member 42 is moved to the handle bottom side, and the protection member side engagement portion 52 is between the engagement portion 72 and the engagement portion 73. When the protective member side engaging portion 52 is engaged with the engaging portion 73, the protective member 42 is fixed to the main body portion 41. Further, when the pressing portion 53 is pushed in, the protective member side engaging portion 52 is separated from the engaging portion 73, and the protective member 42 can move to the blade edge side.

  In the above operation, the protective member side engaging portion 52 does not come out of the opening 45b. That is, the protective member side engaging portion 52 can be reliably engaged with the engaging portion 72 or the engaging portion 73 by the urging force of the leaf spring portion 51. In the engraving sword 71 shown in FIG. 23, the engaging portion 72 and the engaging portion 73 can be seen only because the edge 74b is visible.

  Next, another embodiment of the engraving knife of the present invention will be described with reference to FIGS. A sword 77 shown in FIG. 26 has a main body 78, a protection member 79, and a blade 4. The main body portion 78 is configured by combining two halved members of an upper half portion 78a and a lower half portion 78b. That is, when the upper half portion 78a and the lower half portion 78b are viewed in cross section, the outer shape thereof is substantially semicircular, and each component described later is disposed inside.

  As shown in FIG. 28 and FIG. 29B, the upper half portion 78 a having a half shape has a top surface 98 at the center and edges 103 on both sides. The edge 103 is a portion that is continuous with the top surface 98 and hangs down from the top surface 98, and extends from the blade edge side to the handle bottom side to constitute a side wall. In addition, an engagement convex portion 87 is provided at the edge of the top surface 98 on the blade edge side. The engagement convex portion 87 is a portion that protrudes from the top surface 98 toward the lower half portion 78b, and has a substantially rectangular parallelepiped shape. An insertion portion 102 for inserting and fixing the blade 4 is provided on the edge side end surface of the engagement convex portion 87.

  Further, an engagement protrusion 88a is provided on the cutting edge side of the lower surface of the engagement convex portion 87 (the surface on the lower half portion 78b side). Further, a step portion 89 extending from the blade edge side to the handle bottom side is formed on the engagement convex portion 87. A groove 104 is formed between the engaging convex portion 87 and the edge 103.

  A recess 91, an opening 90, an engagement protrusion 88b, and an inward protrusion 90a are provided on the handle bottom side of the engagement protrusion 87 on the top surface 98 of the upper half portion 78a. The recess 91 is a recess formed in the top surface 98. 29 (a) and 29 (b) are holes formed in the longitudinal direction (the direction extending from the blade edge side to the handle bottom side) in the center portion of the top surface 98 of the upper half portion 78a. That is, the opening 90 is a hole that communicates the inside and outside of the main body 78. The engagement protrusion 88 b is a protrusion that stands (hangs down) from the top surface 98. Furthermore, the inward projection 90a is a projection formed at the edge of the handle bottom side end portion of the upper half portion 78a. That is, the inward protrusion 90a is a protrusion that protrudes in the horizontal direction from the edge of the handle edge side end to the blade edge side. As shown in FIG. 29 (b), the protrusion 90a protrudes in a U-shape with the top surface 98 opened.

  A pressing portion 101 is provided on the upper surface of the upper half portion 78a (the exposed surface and the back surface of the top surface 98). The pressing portion 101 is a portion that is on the upper side (the side that is visible to the operator) during engraving work, and is provided in the vicinity of the end portion on the blade edge side. The pressing portion 101 warps upward (from the side opposite to the lower half portion 78b) as it goes from the handle bottom side to the blade edge side.

  Next, the lower half portion 78b is a member having a half shape corresponding to the upper half portion 78a. As shown in FIG. 27, a bottom surface 97 is provided at the center of the lower half portion 78b. On both sides of the bottom surface 97, edges 105 extending from the blade edge side to the handle edge side are continuously formed. The edge 105 is a wall that stands up with respect to the bottom surface 97. That is, the bottom surface 97 is continuous with the edge 105, and the lower half portion 78b has a substantially half shape when viewed in cross section.

  An engaging recess 96 is provided on the bottom surface 97 of the lower half 78b. An engagement hole 93 a is formed in the engagement recess 96. The engagement hole 93 a is a hole that penetrates the bottom surface 97. Further, an engagement hole 93b (FIG. 28) and an engagement protrusion 99 (FIG. 27) are provided on the handle bottom side of the lower half portion 78b. Further, as shown in FIG. 32 (b), a horizontal surface 94, an inclined surface 95, and a guide surface 109 are provided in order from the handle bottom side on the bottom surface 97 of the lower half portion 78b. As shown in FIG. 32A, a raised portion 94 a is formed on the horizontal plane 94. The raised portion 94a is a protruding portion having the same effect as the raised portion 39 in the engraving sword 1 shown in FIGS.

  As shown in FIG. 30A, the protection member 79 has a main portion 79a and a tip portion 79b. The distal end portion 79b is a portion having a substantially U-shape provided on the distal end side of the protection member 79 in plan view. A pair of long members 84a and 84b are provided on the blade edge side of the main portion 79a. A flat plate portion 83 is provided near the center of the main portion 79a. The handle bottom side end portions of the long members 84 a and 84 b are continuous with the blade edge side end portion of the flat plate portion 83. Moreover, the edge part side edge part of elongate member 84a, 84b is following the front-end | tip part 79b, respectively. As a result, a hole 106 (annular portion) is formed by the distal end portion 79b, the pair of long members 84a and 84b, and the cutting edge side of the flat plate portion 83.

  The flat plate portion 83 is provided with a hole 95. The hole 95 is a long hole that vertically penetrates the flat plate portion 83 and extends from the blade edge side to the handle bottom side. An operation portion 81 is connected to the handle bottom side end portion of the flat plate portion 83 via a connection portion 82. The operation part 81 is a substantially rectangular parallelepiped block-shaped part. A lower portion of the operation unit 81 is disposed along the longitudinal direction of the hole 95. That is, the operation unit 81 is connected only by the flat plate part 83 and the connection part 82. The connecting portion 82 is a portion that connects the operation portion 81 and the flat plate portion 83 and is a portion that can be elastically deformed.

  A protective member side engaging portion 80 is provided on the blade edge side of the operation portion 81. That is, a notch 80a is provided in the vicinity of the edge on the blade edge side of the operation portion 81, and the protective member side engagement portion 80 is formed closer to the blade edge than the notch 80a. The protection member side engaging portion 80 protrudes upward. Further, a wall 81 a is formed in the operation unit 81. The wall 81a is a part facing the protection member side engaging part 80 with the notch part 80a in the operation part 81 interposed therebetween.

  The lower surface and side surfaces of the flat plate portion 83 constitute a slide portion 86. The slide part 86 is a part that contacts an inner wall surface that partitions a space 107 described later and slides with the inner wall surface. Protrusions 86 a are provided on edge portions (a part of the slide portion 86) on both sides of the lower surface side of the flat plate portion 83 and partitioning the hole 95. The protrusion 86a is a part having the same effect as that of the raised portion 3a of the protective member 3 in the engraving sword 1 shown in FIGS.

  The long members 84a and 84b are portions that extend straight from the blade edge side to the handle bottom side. The long members 84a and 84b are provided with inclined portions 92. The inclined portion 92 is an elongated plate-shaped portion that rises (hangs down) in a direction opposite to the protruding direction of the operation portion 81 and is inclined toward the inner side of the hole 106. As shown in FIG. 30 (c), a slide engaging portion 85 is continuously formed on the inclined portion 92. The slide engagement portion 85 is a portion that is continuous with the end portion extending from the blade edge side to the handle bottom side in the inclined portion 92 and extends toward the inside of the hole 106 for a short time. As shown in FIG. 30A, when the protection member 79 is viewed in plan, the width of a part of the hole 106 is narrowed by the inclined portion 92 and the slide engagement portion 85.

  The tip 79b has a substantially U-shape when viewed in plan as shown in FIG. 30 (a), and the protrusion of the operating portion 81 increases toward the blade edge when viewed from the side as shown in FIG. 30 (b). It warps in the direction or is inclined with respect to the main part 79a.

  The upper half portion 78a, the lower half portion 78b, and the protection member 79 described above are assembled as follows. That is, as shown in FIG. 31, the protective member 79 is disposed between the upper half portion 78a and the lower half portion 78b, and the upper half portion 78a and the lower half portion 78b are coupled. That is, the engaging protrusion 87 (FIGS. 27 and 28) of the upper half 78a is fitted into the engaging recess 96 (FIG. 27) of the lower half 78b, and the engaging protrusion 88a of the upper half 78a is fitted. Engage with the engagement hole 93a of the lower half 78b. Further, the engagement protrusion 88b of the upper half portion 78a is engaged with the engagement hole 93b (FIG. 28) of the lower half portion 78b. Further, the engagement protrusion 99 (FIG. 27) of the lower half 78b is engaged with the inward protrusion 90a (FIG. 28) of the upper half 78a. As a result, the upper half part 78a and the lower half part 78b are firmly fixed to form the main body part 78.

  Although not shown, the halves 78a and 78b are similar to the projection 16 of the upper half 2a of the engraving knife 1 shown in FIGS. 10 and 11 and the edge 28 of the lower half 2b. The structure is provided, and the strength around the coupling portion is ensured.

  By joining the upper half part 78 a and the lower half part 78 b, a tip opening 108 is formed at the end part on the blade edge side of the main body part 78. A space 107 shown in FIG. 32A is formed in the main body portion 78. The space 107 communicates with the outside at the opening 90 and the tip opening 108 of the upper half 78a. A protective member 79 is disposed in the space 107.

  As shown in FIG. 32 (b), the distance between the guide surface 109 (bottom surface 97) of the lower half portion 78 b and the top surface 98 of the upper half portion 78 a substantially matches the height dimension of the protection member 79. . Further, an engaging convex portion 87 of the main body portion 78 (upper half portion 78a) is disposed between the long members 84a and 84b facing the protective member 79. In other words, the distal end portion 79 b of the protection member 79 is disposed in the groove 104 between the engagement convex portion 87 and the edge 103. Therefore, the protection member 79 can be reciprocally slid only in the direction connecting the blade edge side and the handle bottom side while being regulated by the guide surface 109, the top surface 98, and the engagement convex portion 87.

  Further, the slide engagement portion 85 of the protection member 79 is disposed along the step portion 89 of the engagement convex portion 87. That is, when the protection member 79 moves along the main body portion 78, the slide engagement portion 85 moves along the step portion 89. When the protection member 79 is accommodated in the main body 78, the tip end 79 b is disposed in the gap 100. The gap 100 is a part of the space 107 inside the distal end portion of the main body portion 78.

Next, the operation of the engraving sword 77 will be described.
26B and FIG. 32A, in the state where the protection member 79 is accommodated in the space 107 in the main body 78, the handle bottom end of the protection member 79 is the main body 78. It arrange | positions on the horizontal surface 94 (bottom surface 97). At this time, the protrusion 86 a provided on the slide portion 86 of the protection member 79 is disposed on the handle bottom side with respect to the raised portion 94 a formed on the horizontal plane 94.

  Then, when the operator presses the operation portion 81 toward the blade edge side from the state shown in FIGS. 26B and 32A, the protection member 79 moves to the blade edge side, and the protrusion 86a of the slide portion 86 is on the horizontal plane 94. If the raised portion 94a is exceeded, the state shown in FIG. That is, when the projection 86a of the slide portion 86 exceeds the raised portion 94a on the horizontal plane 94, the projection 86a is pressed by the raised portion 94a. In other words, the distance (height) between the raised portion 94a and the top surface 98 of the main body portion 79 (upper half portion 79b) is partially narrowed, and the protective member 79 is partially dimensioned in the height direction. When the projection 86a portion having a large diameter exceeds the raised portion 94a, the raised portion 94a and the projection 86a interfere with each other. As a result, a resistance force that prevents the protection member 79 from moving toward the cutting edge is generated.

  When the user of the engraving sword 77 operates the operating portion 81 so as to move the protective member 79 toward the blade edge against this resistance, the protrusion 86a gets over the raised portion 94a, and thereafter the protective member 79 smoothly moves. It becomes possible to move to the cutting edge side. The distal end portion 79 b of the protection member 79 is gradually exposed from the gap 100 to the outside of the main body portion 78. The protrusion 86 a on the protective member 79 side and the raised portion 94 a on the main body 78 side only need to be engaged immediately before the protective member 79 is accommodated in the main body 78. Therefore, if this condition is satisfied, the installation positions of the protrusions 86a and the raised portions 94a do not need to be limited to the positions shown in FIG. 32 (a) and can be arbitrarily selected.

  Then, as shown in FIG. 32 (b), when the protective member side engaging portion 80 of the protective member 79 comes into contact with the handle bottom side wall portion 91a of the main body portion 78 (upper half portion 78a), the use of the engraving sword 77 is used. The person pushes the operation portion 81 into the hole 95. As a result, the operation portion 81 swings around the connection portion 82, and the operation portion 81 is inclined so that the protection member side engagement portion 80 enters the hole 95. That is, the connecting portion 82 is elastically deformed, and a part or all of the protective member side engaging portion 80 enters the hole 95.

  When the operating portion 81 is further pressed toward the cutting edge side from the state shown in FIG. 32B, the protective member 79 moves toward the cutting edge side as shown in FIG. Over the part 91a. At this time, when the user of the engraving sword 77 weakens the force that pushes the operation portion 81 into the hole 95, the protection member side engagement portion 80 is pressed against the top surface 98 by the elastic force (restoring force) of the connection portion 82.

  Then, as shown in FIG. 32 (d), when the protective member side engaging portion 80 moves to the position of the concave portion 91, the protective member 79 is restored to the original shape by the elastic force of the connecting portion 82, and the handle edge side wall portion 91a. Is fitted into the gap 80a, and the protective member side engaging portion 80 is engaged with the recess 91. As a result, the protection member 79 is fixed with respect to the main body portion 78 and is prevented from moving from the blade edge side to the handle bottom side.

  As shown in the above-described example, only the connection portion 82 of the protection member 79 may be elastically deformable, but the operation portion 81, the flat plate portion 83, and the connection portion 82 are integrally formed of a resin material or the like, A part of the continuous flat plate portion 83 may also be elastically deformable.

  At this time, as shown in FIG. 32 (d), the ceiling of the main body portion 78 (upper half portion 78a) is formed in the gap 100 of the main body portion 78 (the space that houses the tip portion 79b of the protective member 79 in the space 107). A gap is formed between the surface 98 and the main portion 79 a of the protection member 79. Here, when the distal end portion 79b is pressed against an object to be engraved or the like in a state where the protective member 79 (the distal end portion 79b) is disposed around the blade 4, the distal end portion 79b is moved from the main body portion 78 (upper half portion 78a). It is pressed to the top surface 98 side.

  However, as shown in FIG. 33, the slide engagement portion 85 of the protection member 79 is engaged with the step portion 89 of the engagement convex portion 87 of the main body portion 78 (upper half portion 78a). The portion 85 is supported by the stepped portion 89, and as a result, the protection member 79 (tip portion 79b) does not move in the gap 100 toward the top surface 98. In other words, the tip 79b of the protection member 79 maintains a state of being reliably disposed around the blade 4, and does not wobble, so that the worker can perform the engraving work with peace of mind. Further, the rigidity of the protection member 79 is improved by providing the slide engagement portion 85.

  When the operator puts a finger on the warped pressing portion 101, the pressing portion 101 comes into close contact with the curved surface of the fingertip of the finger. For this reason, the pressing portion 101 is easily caught on the fingertip, and engraving work is easily performed by applying force to the fingertip. Even if the protective member 79 contacts the engraving object (not shown) at this time, the protective member-side engaging portion 80 of the protective member 79 is engaged with the concave portion 91 on the main body portion 78 side. The tip 79b of the member 79 is not accommodated in the gap 100, and the state where the tip 79b is disposed around the blade 4 (a state in which a protective function is exhibited) can be maintained.

  Conversely, when it is desired to perform engraving work without using the protective member 79, the protective member 79 is accommodated in the main body portion 78 by the following procedure. That is, in the state shown in FIG. 32 (d), the operator pushes down the operating portion 81 against the elastic force of the connecting portion 82, and as shown in FIG. Release the engagement. In this state, the operation unit 81 is pulled toward the handle bottom side. Then, as shown in FIG. 32 (b), when the protective member side engaging portion 80 exceeds the handle bottom side wall portion 91 a, the protective member 79 is restored to its original shape by the elastic force of the connecting portion 82.

  Further, when the operator puts his finger on the wall 81a of the operation portion 81 and pulls it toward the bottom of the handle, the projection 86a of the protection member 79 eventually hits the raised portion 94a on the horizontal plane 94 of the main body portion 78 (lower half portion 78b). Touch. When the protrusion 86a gets over the raised portion 94a, a resistance force acts in a direction to prevent the protection member 79 from moving to the handle bottom side. When the user of the engraving sword 77 operates the protection member 79 (operation part 81) with a force exceeding this resistance, the protection member 79 moves to the position shown in FIG. Is housed in.

DESCRIPTION OF SYMBOLS 1 Engraving sword 2,73 Body part 3,42,79 Protection member 4 Blade 4a Blade edge 8,50 Protection member body part 9,50a, 79b Tip part 38,53,81 Operation part

Claims (14)

It is a sword with a blade attached to the handle, and has a substantially U or U-shaped portion in plan view that can be arranged around the cutting edge,
The substantially U or U-shaped part is movable between a position near the blade edge and a position retracted from the blade edge,
The substantially U or substantially U-shaped part is constrained to be movable in the front-rear direction, and the substantially U or substantially U-shaped part does not fall off,
An operation unit that can be operated by a user to move the substantially U-shaped or U-shaped portion;
An engraving sword characterized in that an operation unit capable of moving the substantially U-shaped portion or the substantially U-shaped portion is provided only on the back side based on a posture in use. A sword having a main body portion to which the blade is fixed and a protective member that can be arranged around the blade,
The protective member is movable along the main body portion between a position functioning as a protective member and a position retracted from the blade while being attached to the main body portion.
The protective member is restrained so as to be movable in the front-rear direction, and the protective member does not fall off from the main body,
It has an operation unit that can be operated by the user to move the protective member,
An engraving sword characterized in that an operation unit capable of moving the protective member is provided only on the back side based on a posture in use. A sword having a main body portion to which the blade is fixed and a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be arranged around the blade tip,
The substantially U-shaped portion or the substantially U-shaped portion is movable along the main body portion between a position disposed around the blade edge and a position retracted from the blade edge while being attached to the main body portion.
The substantially U or substantially U-shaped part is restrained so as to be movable in the front-rear direction, and the substantially U or substantially U-shaped part does not fall out of the main body part,
An operation unit that can be operated by a user to move the substantially U-shaped or U-shaped portion;
An engraving sword characterized in that an operation unit capable of moving the substantially U-shaped portion or the substantially U-shaped portion is provided only on the back side based on a posture in use. A sword with a blade attached to the handle, which has a portion that is warped toward the tip, and the warped portion is movable between a position near the blade edge and a position retracted from the blade edge,
The warped part is restrained so as to be movable in the front-rear direction, and the warped part does not fall off,
Having an operation unit that can be operated by a user to move the warped part;
An engraving sword characterized in that an operation unit capable of moving the warped part is provided only on the back side based on a posture in use.   The engraving sword according to any one of claims 1 to 4, wherein the operation unit is on a handle bottom side. There is a protection member having a protection member body and a tip formed at the tip of the protection member body,
The tip portion is warped and constitutes a substantially U or U-shaped portion in plan view,
The engraving sword according to any one of claims 1 to 5, wherein the protective member main body is longer than the tip.   The protective member main body portion of the protective member is engaged with the main body portion to which the blade is fixed, and the tip end portion thereof is restrained so as to be movable only in the front-rear direction along the main body portion. The engraved sword.   A pressing part that has a main body part to which a blade is fixed and becomes an upper surface during engraving work of the main body part, and that warps upward as it goes from the handle edge side to the blade edge side at the tip part of the main body part. The engraving sword according to claim 1, wherein the engraving sword is provided. It is a sword with a blade attached to the handle, and has a substantially U or U-shaped portion in plan view that can be arranged around the cutting edge,
The substantially U or U-shaped part is movable between a position near the blade edge and a position retracted from the blade edge,
The substantially U or substantially U-shaped part is constrained to be movable in the front-rear direction, and the substantially U or substantially U-shaped part does not fall off,
An operation unit that is operated by a user to move the substantially U-shaped or U-shaped part;
The engraving sword characterized in that the operation part is on the handle bottom side. It is a sword with a blade attached to the handle, and has a substantially U or U-shaped portion in plan view that can be arranged around the cutting edge,
The substantially U or U-shaped part is movable between a position near the blade edge and a position retracted from the blade edge,
The substantially U or substantially U-shaped part can be fixed at a position near the blade edge, and can be fixed at a position where the substantially U or substantially U-shaped part is retracted from the blade edge,
An operation unit that can be operated by a user to move the substantially U-shaped or U-shaped portion;
An engraving sword characterized in that an operation unit capable of moving the substantially U-shaped portion or the substantially U-shaped portion is provided only on the back side based on a posture in use. It is a sword with a blade attached to the handle, and has a substantially U or U-shaped portion in plan view that can be arranged around the cutting edge,
The substantially U or U-shaped part is movable between a position near the blade edge and a position retracted from the blade edge,
The substantially U or substantially U-shaped part can be fixed at a position near the blade edge, and can be fixed at a position where the substantially U or substantially U-shaped part is retracted from the blade edge,
An operation unit that is operated by a user to move the substantially U-shaped or U-shaped part;
The engraving sword characterized in that the operation part is on the handle bottom side. A sword having a main body portion to which the blade is fixed and a substantially U-shaped portion or a substantially U-shaped portion in plan view that can be arranged around the blade,
The substantially U-shaped portion or the substantially U-shaped portion is movable along the main body portion between a position disposed around the blade and a position retracted from the blade while being attached to the main body portion. Yes,
An engraving sword, which is a portion that becomes an upper surface during engraving work of the main body, and has a pressing portion that warps upward as it goes from a handle bottom side to a blade edge side at a tip portion of the main body portion.
  A protective member is provided, and the substantially U-shaped or substantially U-shaped portion in plan view is a tip portion of the protective member that is warped. The engraving sword according to any one of 12 above.   The substantially U-shaped or substantially U-shaped portion in a plan view is constituted by a tip portion of an annular portion, according to any one of claims 1, 3, 6, 9, 10, 11, 12, and 13. The engraved sword.

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