JP5882708B2 - chisel - Google Patents

Description

  The present invention relates to a carving sword, and more particularly to a carving sword with a protective member that can protect a user's hand and the cutting edge of the carving sword.

  Conventionally, it is known that sculptured swords are used as teaching materials for drawing work in primary education. At this time, it may be difficult for a young person who is unfamiliar with the blade to handle the engraving sword, and there is a problem that a finger or the like is accidentally damaged. In addition, there is a problem that the user accidentally drops the carving sword onto the floor or desk, damaging the blade of the carving sword, the floor of the classroom, the desk, or the like.

  Therefore, a sculpture sword has been devised that can be used safely even by young people unfamiliar with the blade. An example of such a sword is a sword disclosed in Patent Document 1. The engraving sword disclosed in Patent Document 1 includes a engraving sword cover having a loop portion surrounding the engraving sword blade, and the engraving sword cover is detachably attached to the engraving sword blade body.

  According to such a carving sword, since the blade of the carving sword is surrounded by the loop portion, even if the blade of the carving sword is unexpectedly protruded during the operation, the user's hand or finger is not damaged. Even if such a sculptured sword is dropped on the floor or desk, the loop part protects the blade of the sword, so that the blade of the sword or the floor or desk of the classroom is not damaged.

  Furthermore, in such a sword, since the sword cover is detachable, a skilled person who can handle the blade can use the sword with the sword cover removed. That is, when the user's technique is improved and the loop portion covering the blade of the carving sword is perceived as an obstacle to the work, the work can be performed by removing the carving sword cover. That is, such an engraved sword can be safely used by those who are unfamiliar with the handling of the blade and can be comfortably used by those who are skilled in handling the blade.

JP 2001-347794 A

  However, since the engraving sword disclosed in the above-mentioned Patent Document 1 attaches the engraving sword cover having a loop portion surrounding the portion of the cutting edge to the blade, the engraving sword blade compared to the state where the engraving sword cover is removed. Nearby parts are relatively large. Therefore, when the engraving sword is stored in the engraving sword case or the like, there is a problem that the engraving sword cover obstructs the storage.

  Therefore, a method of storing the sword with the sword cover removed is conceivable. However, if the engraving sword is stored with the engraving sword cover removed, the engraving sword may spill out of the engraving sword case when carrying it, or the engraving sword may be taken out of the engraving sword case during use. In addition, the user may accidentally injure his hand. That is, there is a problem that the risk of injury or the like increases due to the blade of the sword being exposed when the sword is not used.

  Furthermore, since the engraved sword cover can be detachably attached, there is a problem that the separated engraved sword cover is lost.

  In view of the above-described problems of the prior art, the present invention can be used safely by those who are unfamiliar with the cutter, and can be used comfortably by those skilled in handling the cutter, and is safe even when not in use. An object of the present invention is to provide a carving sword that has high performance and does not lose its component parts.

The invention according to claim 1 for solving the above-described problem includes a protective member having a handle portion , a blade body portion attached to the handle portion , and a guard portion that can be disposed at least near the blade edge of the blade body portion. in the chisel, the protective member is attached to the handle portion or the blade body portion, and relatively movable with respect to the handle portion or the blade unit, by moving the protective member, the guard portion It is possible to switch between a protective posture located in the vicinity of the blade edge and an open posture in which the guard part moves away from the periphery of the blade edge, and the handle portion is folded into a long shape and folded into a small piece. An engraving sword capable of switching between a non-use state and a protection member in the non-use state.

In the first aspect of the present invention, the protective member is integrally attached to the handle portion or the blade body portion. Therefore, unlike the structure in which the protective member is detachable, the protective member is not separated from the engraving knife. As a result, the protective member is unexpectedly removed, and the blade of the engraving sword is exposed, so that the user is not injured. Further, since the protective member is not separated, the protective member is not lost.
In the engraving sword of the present invention, the protective member is integrally attached to the handle portion or the blade body portion, and is movable relative to the handle portion or the blade body portion. Then, by moving the protective member, it is possible to switch between a protective posture in which the guard portion is located in the vicinity of the blade edge and an open posture in which the guard portion is retracted from the periphery of the blade edge. Therefore, those who are unfamiliar with the blade can safely use it by using it in a protective posture, and those who are good at handling the blade can use it comfortably by using it in an open posture.
Furthermore, the engraving sword of the present invention can be switched between a use state in which the handle portion is developed in a long shape and a non-use state in which the handle portion is folded into a small piece. Therefore, the handle portion can be expanded widely so that it can be easily held by the user when in use, and can be folded small so that it can be easily stored and carried in the case when not in use.
In the engraving sword of the present invention, the protective member is in the protective posture when not in use. That is, since the blade is not exposed when not in use, it can be safely carried out when not in use, such as being carried, stored in a storage device, and taken out from the storage device.

  According to a second aspect of the present invention, the protection member is attached to the handle portion so as to protrude and retract. The protection member protrudes from the handle portion in the protective posture and retreats into the handle portion in the open posture. The engraving sword according to claim 1.

  According to the second aspect of the present invention, the protective member is attached to the handle so as to protrude and retract. The protective member protrudes from the handle in the protective posture and retreats into the handle in the open posture. That is, the protective member located near the cutting edge in the protective posture is positioned inside the handle portion in the open posture. And if a protection member is located in the inside of a handle | pattern part, when a user holds a sword or performs a carving work etc., a protection member will not become obstructive. In other words, when the user performs the engraving work with the handle in the open posture, the engraving sword is easy to hold and work is easy.

  According to a third aspect of the present invention, the handle portion includes a front end side portion located on the blade body side and a rear end side portion, and the rear end side portion is relative to the front end side portion. The engraving sword according to claim 1, wherein the engraving sword is rotatable.

  In the structure of Claim 3, the handle | pattern part is comprised from the front end side part and the rear end side part, and the rear end side part can rotate relatively with respect to the said front end side part. In other words, the engraving sword can be changed to a non-bulky shape by folding or folding the handle. Therefore, the engraving sword is easy to be stored in a case or the like and is easy to carry.

  According to a fourth aspect of the present invention, the handle portion includes a front end side portion located on the blade body side and a rear end side portion, and the rear end side portion includes at least a part of the front end side portion. The engraving sword according to any one of claims 1 to 3, wherein the engraving sword has an accommodating portion to be accommodated, and the distal end side portion is accommodated in the accommodating portion in the non-use state.

  In the configuration of claim 4, the handle portion is constituted by the front end side portion and the rear end side portion, and at least a part of the front end side portion can be stored in the storage portion formed in the rear end side portion when not in use. . That is, the size of the entire engraving sword can be reduced by storing another part of the handle part in a part of the handle part or storing the blade part in the handle part. Therefore, the engraving sword can be easily carried when not in use, and the engraving sword can be easily stored in a case or the like.

  A fifth aspect of the present invention is the engraving sword according to any one of the first to fourth aspects, wherein the guard portion has a semi-annular portion.

  According to the structure of Claim 5, since the guard part has a semi-annular part, a guard part can be distribute | arranged so that the blade edge | tip of a carving sword may be surrounded. That is, since the protective member can be disposed so as to surround the cutting edge of the engraving sword, the safety in the protective posture can be further increased.

The present invention has an effect that the protection member is not lost because the protection member is integrally attached to the handle portion or the blade body portion.
Further, according to the present invention, it is possible to switch between a protective posture in which the guard portion is located in the vicinity of the blade edge and an open posture in which the guard portion is retracted from the periphery of the blade edge, and the protective posture and the open position can be changed according to the skill of the user. Can be used by switching the posture. Therefore, there is an effect that a person unfamiliar with the blade can use it safely, and a person who is skilled in handling the blade can use it comfortably.
Further, according to the present invention, it is possible to switch between a use state where the handle portion is developed in a long shape and a non-use state where the handle portion is folded into a small piece. Therefore, there is an effect that it is easy for the user to hold in the use state, and easy to store and carry in the case in the non-use state.
And this invention will be in a protection posture in a non-use state, and a blade will not be exposed in a non-use state. Therefore, there is an effect that it can be safely handled when not in use, such as being carried, stored in a storage tool, and taken out from the storage tool.

It is a perspective view which shows the engraving sword concerning embodiment of this invention upside down. It is a perspective view which shows the handle | pattern part main body of FIG. It is a perspective view which shows the core member of FIG. It is a perspective view which shows a mode that the core member of FIG. 2 was seen from the direction different from FIG. It is AA sectional drawing of the core member of FIG. It is a partially broken perspective view of the core member of FIG. It is a perspective view which shows the outer cylinder member of FIG. It is a perspective view which shows a mode that the outer cylinder member of FIG. 2 was seen from the direction different from FIG. It is a perspective view which shows the grip part of FIG. It is AA sectional drawing of the grip part of FIG. It is a perspective view which shows the protection member of FIG. It is a disassembled perspective view of the engraving sword of FIG. It is a perspective view which shows the state which attached the protection member and the blade body part to the handle | pattern part main body of FIG. It is a partially broken perspective view which shows the state which fractured | ruptured a part of handle part main body of FIG. It is AA sectional drawing of the front part of the engraving sword shown in FIG. It is BB sectional drawing of the front part of the engraving sword shown in FIG. It is AA sectional drawing of the sword of FIG. It is BB sectional drawing of the engraving sword of FIG. It is explanatory drawing which shows the operation | movement at the time of the engraving sword concerning embodiment of this invention changing from a protection attitude | position to an open attitude | position upside down, and transfers to the order of (a)-(c). It is explanatory drawing which shows the operation | movement at the time of the engraving sword concerning embodiment of this invention shifting from a use state to a non-use state upside down, and transfers to the order of (a)-(b). It is explanatory drawing which shows the operation | movement at the time of the engraving sword shifting from a use state to a non-use state following FIG. 20, and it transfers to the order of (c)-(d). It is a perspective view which shows the state which looked at the engraving knife concerning embodiment of this invention from the direction different from FIG. It is a perspective view which shows the state which made the engraving sword of FIG. 22 into the open attitude | position. It is AA sectional drawing of the sword of FIG. It is a perspective view which shows the protection member of a form different from FIG. It is sectional drawing which shows the engraving sword which employ | adopted the protection member of FIG. FIG. 27 is a perspective view showing a sword of the present invention in a form different from that of FIGS. 1 and 26. It is an A direction arrow directional view of the engraving sword of FIG.

  Embodiments of the present invention will be further described below. In the following description, the front-rear direction is described with the cutting edge side of the engraving sword 1 as the front and the handle side as the rear unless otherwise specified. Further, the vertical direction in the following description will be described with reference to the vertical direction in FIG. 1 unless otherwise specified. Furthermore, the width direction in the following description will be described as a direction orthogonal to the vertical direction and the front-rear direction in FIG. 1 unless otherwise specified.

  The engraving sword 1 according to the first embodiment of the present invention includes a handle portion 2, a blade body portion 3, and a protection member 4 as shown in FIG. At this time, the blade body portion 3 is integrally attached to the front end portion of the handle portion 2. And the guard part 6 of the protection member 4 is located in the vicinity of the blade body part 3 and the blade edge 5. Further, the operation portion 7 of the protection member 4 is exposed at a portion slightly forward from the center portion in the front-rear direction of the handle portion 2. The operation unit 7 is formed integrally with the protection member 4, and the protection member 4 can be moved back and forth by moving the operation unit 7 back and forth. Specifically, when the operation unit 7 is moved rearward with the guard unit 6 exposed to the outside, the protection member 4 moves rearward and the guard unit 6 retreats into the handle unit 2. Further, when the operation part 7 is moved forward in a state where the guard part 6 is retracted into the inside of the handle part 2, the protection member 4 moves forward and the guard part 6 protrudes from the inside of the handle part 2 to the outside.

  The handle portion 2 is roughly divided into a handle body portion 12 (front end side portion) located at the front and a grip portion 13 (rear end side portion) located at the rear. The grip portion 13 is composed of the handle body portion 12. It is attached so that rotation is possible relatively. And the handle | pattern part 2 of this embodiment can be folded in half near the center of the front-back direction, and can be folded small.

  The handle body 12 is formed of a core member 17 and an outer cylinder member 18 as shown in FIG.

  As shown in FIG. 3, the core member 17 is a member having a substantially rectangular parallelepiped shape, and includes a main body portion 22, an outward projecting portion 23, a step forming portion 24, rear standing wall portions 25 and 26, and outer wall portions 27 and 28. Have.

  The main body 22 has a substantially rectangular parallelepiped shape and is located at a substantially central portion of the core member 17. And the main-body part 22 is extended from the front end of the core member 17 to the back a little from the center part of the front-back direction. A blade body attaching portion 33 is provided on the front end surface of the main body portion 22. The blade body attaching portion 33 is a bottomed hole extending from the front toward the rear. The blade body attaching portion 33 is narrower on the rear side than the front side (not shown).

  As shown in FIG. 3, the outer protruding portion 23 has a substantially rectangular parallelepiped shape, and protrudes upward from the upper end of the main body portion 22. In other words, the outward protrusion 23 is continuous with the outer surface of the main body 22, and protrudes from the main body 22 toward the outer side from the center side of the core member 17. At this time, the outward projecting portion 23 extends rearward from the front end of the core member 17, and specifically extends from the vicinity of the center in the front-rear direction to a portion slightly rearward. At this time, an engagement groove 35 is provided in a portion slightly forward from the rear end of the outward projection 23.

  The engaging groove 35 is a groove formed by cutting out a part of the upper end surface of the outward projecting portion 23. That is, the engaging groove 35 is provided on the upper end surface of the outward projecting portion 23 and is a groove that becomes deeper from the top to the bottom. The engagement groove 35 has a substantially square cross section and extends along the width direction of the outward protrusion 23. In other words, the engagement groove 35 extends in a direction substantially perpendicular to the protrusion direction of the outward protrusion 23. The engagement groove 35 extends from one side surface of the outward protrusion 23 to the other side surface, and penetrates the outward protrusion 23 in the width direction. That is, both end portions in the extending direction of the engaging groove 35 are continuous with the outside through openings formed on both side surfaces of the outward projecting portion 23.

  As shown in FIG. 3, the step forming portion 24 is provided below the main body portion 22 and slightly behind the front end of the main body portion 22. As shown in FIGS. 3 and 4, the step forming portion 24 extends from the center side of the core member 17 outward in a substantially U-shaped cross section, and is convex forward. That is, the step forming portion 24 protrudes outward from the center side of the core member 17, and more specifically, protrudes downward from the lower end of the main body portion 22.

  Accordingly, the step forming portion 24 and the outward projecting portion 23 are in positions facing each other with the main body portion 22 interposed therebetween, and the projecting direction of the step forming portion 24 and the projecting direction of the outward projecting portion 23 are opposite to each other. The front end portion of the step forming portion 24 is located slightly behind the front end of the main body portion 22, and forms a step with the lower end surface of the main body portion 22 (the lower end surface in FIG. 3 and the upper end surface in FIG. 4). Are continuous.

  As shown in FIG. 3, the rear standing wall portions 25 and 26 are provided on the rear side of the core member 17, and more specifically, from a portion slightly rearward of the central portion in the front-rear direction of the core member 17, Furthermore, it is a plate-shaped part extended toward the back side. Here, as shown in FIGS. 3 and 5, the two rear standing wall portions 25 and 26 extend in parallel and face each other via a gap 37. At this time, columnar protrusions 38 and 38 are formed on the opposed surfaces of the rear vertical wall portions 25 and 26, respectively. Further, an engaging flat plate portion 39 is formed in a part between the opposed surfaces of the rear standing wall portions 25 and 26 (see FIGS. 4 and 5).

  As shown in FIG. 5, the protrusions 38, 38 protrude from the mutually facing surfaces of the two rear standing wall portions 25, 26 in directions approaching each other. Here, the shape and size of the two protrusions 38, 38 are the same, and the central axes of the two protrusions 38, 38 are also the same. The projecting end surfaces of the two protrusions 38 are opposed to each other.

As shown in FIG. 6, the engagement flat plate portion 39 has a substantially rectangular flat plate shape. Further, it is slightly behind the front ends of the rear standing wall portions 25 and 26 and is provided in the vicinity of the lower end portions of the rear standing wall portions 25 and 26. The engaging flat plate portion 39 is continuous with the two rear standing wall portions 25 and 26 at both end portions in the longitudinal direction. That is, the engagement flat plate portion 39 is provided so as to connect the two rear standing wall portions 25 and 26.
In addition, the engaging flat plate portion 39 is provided with an inclined surface 40 that decreases in height toward the rear in the vicinity of the rear end thereof.

  As shown in FIG. 3, the outer wall portions 27 and 28 are provided on the outer sides of the two rear standing wall portions 25 and 26, respectively, and are plate-like portions extending in the front-rear direction. At this time, the front end portions of the outer wall portions 27 and 28 are both positioned slightly ahead of the front ends of the two rear standing wall portions 25 and 26. Here, as shown in FIGS. 3 and 5, the inner side surfaces of the outer wall portions 27 and 28 and the outer side surfaces of the main body portion 22 and the rear standing wall portions 25 and 26 are separated from each other in the portion from the upper side to the vicinity of the lower end. The inner side surfaces of the outer wall portions 27 and 28 are connected to the outer side surfaces of the main body portion 22 and the rear standing wall portions 25 and 26 only in the vicinity of the lower end.

  More specifically, the outer wall portions 27, 28 are formed by connecting portions 27a, 28a, lower portions 27b, 28b, and upper portions 27c, 28c from the bottom upward.

  As shown in FIG. 5, the connecting portions 27 a and 28 a are located at the lower end portion of the core member 17. The connecting portions 27a and 28a have a substantially rectangular cross section and project substantially vertically from the center in the width direction toward the outside.

  As shown in FIG. 5, the lower portions 27b and 28b are continuous with the connecting portions 27a and 28a on the lower side, and are continuous with the upper portions 27c and 28c on the upper side. The lower portions 27b and 28b spread outward in the width direction as they go upward. Specifically, the lower portions 27b and 28b rise obliquely upward while being gently bent. That is, the lower portions 27 b and 28 b protrude outward and obliquely upward from the core member 17.

  As shown in FIG. 5, the upper portions 27c and 28c protrude substantially vertically upward from the upper ends of the lower portions 27b and 28b. At this time, the upper end portions of the upper portions 27c and 28c are tapered toward the upper side, and the cross section is a triangle.

  As shown in FIG. 5, groove portions 42 and 43 are formed by the outer wall portions 27 and 28, the main body portion 22, and the rear standing wall portions 25 and 26. Specifically, as shown in FIGS. 3 and 5, the groove portions 42 and 43 are formed in portions surrounded by the inner side surfaces of the outer wall portions 27 and 28 and the outer side surfaces of the main body portion 22 and the rear standing wall portions 25 and 26. Has been. The groove portions 42 and 43 are grooves having the top surfaces of the connecting portions 27a and 28a as bottoms, and the widths thereof become narrower toward the depth direction (downward).

  As shown in FIGS. 7 and 8, the outer cylinder member 18 has a substantially cylindrical outer shape, and has an annular portion 46 positioned at the front end and two protruding pieces extending rearward continuously from the rear end of the annular portion 46. 47, 47. In other words, the outer cylinder member 18 has a cylindrical shape near the front end, and the remaining portion has a shape in which a part of the side surface of the cylinder is cut away.

  As shown in FIG. 8, the projecting piece 47 is formed of a front portion 47 a extending in a substantially arcuate cross section and a rear portion 47 b extending in a substantially “<” shape in cross section. At this time, the rear portion 47b extends further rearward from a part of the rear end of the front portion 47a. A portion near the center in the up-down direction of the front portion 47a and a portion near the lower end of the rear portion 47b are continuous via a step 47c.

  Here, as shown in FIG. 8, the two protruding pieces 47 are separated in the vicinity of the upper end and the lower end of the outer cylinder member 18. That is, the rear portion of the outer cylinder member 18 is provided with a notch extending from the rear to the front near the upper end and the lower end.

  Here, the notch 48 positioned above the outer cylinder member 18 includes a rear notch 49 extending from the rear end of the outer cylinder member 18 to the vicinity of the central portion in the front-rear direction, and a front end of the rear notch 49. It is formed by the front notch part 50 extended slightly toward the front. The rear cutout portion 49 and the front cutout portion 50 are continuous, and both have a substantially rectangular shape as viewed from above (illustration is omitted for the view of the outer cylinder member 18 as viewed from above). Here, the front cutout portion 50 is shorter in the width direction and the front-rear direction length than the rear cutout portion 49.

  As shown in FIG. 9, the grip portion 13 has a substantially bottomed semi-cylindrical shape. That is, the bottomed cylinder is vertically split.

  If it demonstrates in detail, the grip part 13 has the two side walls 53 and 54 in the position which opposes, and the baseplate part 55 located in the lower end part of these two side walls 53 and 54. As shown in FIG. The two side walls 53 and 54 and the bottom plate portion 55 are continuous, and extend in a substantially U-shaped cross section over substantially the entire region of the grip portion 13 in the front-rear direction. At this time, the side walls 53, 54 and the bottom plate portion 55 extend from a portion slightly rearward from the front end portion of the grip portion 13 to the vicinity of the rear end. Here, as shown in FIG. 10, the outer surface of the bottom plate portion 55 is gently curved, and the height of the outer surface is the lowest in the vicinity of the approximate center in the front-rear direction, and slightly toward the front end and the rear end. It gets higher gradually. The rear end portion 56 of the grip part 13 is provided with a rear end wall part 56 having a substantially quadrispherical shape as shown in FIGS. As a result, the grip portion 13 forms an internal space 57 (storage portion) surrounded by the side walls 53, 54, the bottom plate portion 55, and the rear end wall portion 56 over substantially the entire front and rear direction. The internal space 57 is a space that is open upward and forward.

  Here, as shown in FIG. 9, the bottom plate portion 55 of the grip portion 13 extends further forward than the front end portions of the side walls 53 and 54. An engagement protrusion 60 is provided on the upper surface of the front end portion of the bottom plate portion 55. That is, the engagement protrusion 60 is formed in the vicinity of the front end of the grip portion 13.

  As shown in FIGS. 9 and 10, the engagement protrusion 60 is a member whose outer shape is formed in a substantially rectangular parallelepiped shape. The engagement protrusion 60 has an engagement protrusion main body 61 protruding substantially vertically from the upper surface (inner side surface) of the bottom plate portion 55 and a protrusion 62 protruding forward from the engagement protrusion main body 61. ing.

  The protrusion 62 has a substantially cubic shape, and protrudes substantially vertically from the front end surface of the engagement protrusion main body 61 toward the front. Specifically, the protrusion 62 protrudes forward from a position slightly below the center portion in the vertical direction of the front end surface of the engagement protrusion main body 61.

  Here, a retaining groove 63 is provided below the protrusion 62. The latching groove 63 is a groove in which a part of the front end surface of the engaging protrusion main body 61 is cut out from the front to the rear, and extends in a substantially rectangular cross section along the width direction of the engaging protrusion main body 61. That is, the latching groove 63 is a groove extending in a direction substantially perpendicular to the protruding direction of the engaging protrusion main body 61. The retaining groove 63 extends from one side surface to the other side surface of the engagement protrusion main body 61 and penetrates the engagement protrusion main body 61 in the width direction. That is, both end portions in the extending direction of the latching groove 63 are continuous with the outside through openings formed on both side surfaces of the engaging protrusion main body 61, respectively.

  More specifically, the latching groove 63 is formed between an upper surface and a lower surface facing each other in the vertical direction, and is a groove extending in the front-rear direction. Here, the upper surface forming the latching groove 63 is formed as an integral surface continuously with the lower end surface of the protrusion 62. Furthermore, the lower surface forming the latching groove 63 is the same surface as the upper end surface (inner surface) of the bottom plate portion 55. That is, the latching groove 63 is a groove formed at the lower end of the engaging protrusion main body 61.

  Further, as shown in FIGS. 9 and 10, the engaging protrusion main body 61 is provided with a rotation through hole 64 at a portion slightly above the center portion in the vertical direction and substantially at the center portion in the front-rear direction. . The turning through-hole 64 is a through-hole penetrating the engaging protrusion main body 61 in the width direction, and has an elliptical cross section and extends in the width direction of the engaging protrusion main body 61. More specifically, as shown in FIG. 10, the through-hole 64 for rotation has a substantially semicircular cross section from the front to the rear and a front portion 64a that is convex forward, and a substantially rectangular cross section. The central portion 64b is shaped like a circle, and the rear portion 64c has a substantially semicircular cross section and is convex rearward.

  Here, a stepped portion 64d is formed on the inner peripheral surface of the turning through hole 64 at the boundary portion between the front portion 64a and the central portion 64b and at the boundary portion between the central portion 64b and the rear portion 64c. A total of four stepped portions 64d are provided, two above and below the inner peripheral surface of the through-hole 64 for rotation. All of them protrude inward from the inner peripheral surface of the rotation through hole 64. Specifically, the step portion 64d positioned above the inner peripheral surface protrudes downward, and the step portion 64d positioned below the inner peripheral surface protrudes upward. Further, each of the step portions 64 d extends in a substantially semicircular cross section along the width direction of the rotation through hole 64, and extends across the entire width direction of the rotation through hole 64.

  Furthermore, as shown in FIG. 10, an in-grip groove 65 is provided in the vicinity of the rear of the engagement protrusion 60 and slightly behind the front end of the internal space 57. The grip inner groove portion 65 is formed on the upper surface (inner side surface) of the bottom plate portion 55 and is recessed with respect to the periphery. The grip inner groove portion 65 has a substantially trapezoidal cross section and extends in the width direction of the grip portion 13.

  Although the protection member 4 is not specifically limited, It is formed with resin, such as a polyacetal. In other words, the protection member 4 is a member formed of a suitable raw material so as to have flexibility or elasticity. And the protection member 4 has the guard part 6, the standing wall parts 68 and 69, and the operation part 7, as FIG. 11 shows.

  As shown in FIG. 11, the guard portion 6 is a semi-annular portion located at the front end of the protection member 4. In detail, the guard part 6 is a part extended in the up-down direction with a substantially U-shaped cross section, and is convex forward. At this time, the upper end surface of the guard portion 6 is inclined and becomes higher toward the rear.

  As shown in FIG. 11, the standing wall portions 68 and 69 are plate-like portions provided on the rear side of the guard portion 6 and extending in the front-rear direction of the protection member 4. More specifically, the front end portions of the two standing wall portions 68 and 69 are continuous with the rear end portion of the guard portion 6 at both ends in the width direction. The two standing wall portions 68 and 69 extend over substantially the entire area of the protective member 4 from the rear end of the guard portion 6 to the vicinity of the rear end of the protective member 4. At this time, the two standing wall portions 68 and 69 extend in parallel to each other. That is, the two standing wall portions 68 and 69 are opposed to each other through a gap.

  Here, projecting portions 70 and 71 are provided at upper end portions of the surfaces of the two standing wall portions 68 and 69 facing each other. The protrusions 70 and 71 are both substantially rectangular in cross section and extend along the front-rear direction of the protection member 4. That is, the projecting portions 70 and 71 project inward from the surfaces of the two standing wall portions 68 and 69 facing each other. In other words, the projecting portions 70 and 71 project in directions approaching each other. The projecting end surfaces of the projecting portions 70 and 71 are opposed to each other.

  As shown in FIG. 11, the operation portion 7 is formed in the vicinity of the rear upper end portion of the protection member 4, and includes an operation portion main body 73 and two support pieces 74 and 75.

  The operation portion main body 73 is formed of a rectangular flat plate-shaped main body portion 73a, a latching piece 73b that protrudes downward from the front end of the main body portion 73a, and an operation protrusion 73c that protrudes upward from the rear end of the main body portion 73a. . Here, the latching piece 73b extends in a substantially pentagonal cross section over the entire width direction of the operation portion main body 73, and the operation protrusion 73c extends in a substantially trapezoidal cross section over the entire width direction of the operation portion main body 73. .

  The support pieces 74 and 75 are formed from support piece main body portions 74 a and 75 a and projecting piece portions 74 b and 75 b, and are arranged symmetrically in the width direction of the protection member 4.

  The support piece main body portions 74 a and 75 a of the two support pieces 74 and 75 are plate-like portions that protrude upward from the upper ends of the standing wall portions 68 and 69 and extend in the front-rear direction of the protection member 4. More specifically, the rear upper end portions of the two standing wall portions 68 and 69 and the front lower end portions of the support piece main body portions 74a and 75a are continuous, and the two support piece main body portions 74a and 75a extend in parallel to each other. . At this time, two support piece main-body parts 74a and 75a are extended in the same direction as the two standing wall parts 68 and 69, and the longitudinal direction is the same. And the two support piece main-body parts 74a and 75a are also facing through the clearance gap similarly to the two standing wall parts 68 and 69. That is, the standing wall portions 68 and 69 and the support piece main body portions 74a and 75a are continuous such that two standing plates having different lengths are stacked in the vertical direction.

  The projecting piece portions 74b and 75b are portions having a substantially rectangular parallelepiped shape and projecting inward from rear upper end portions of the opposing surfaces of the two support piece main body portions 74a and 75a. More specifically, the protruding pieces 74b and 75b protrude in directions approaching each other.

  Here, projecting tip portions of the projecting piece portions 74 b and 75 b are continuous with the operation unit main body 73. More specifically, the projecting tip portions of the projecting piece portions 74 b and 75 b are continuous with the rear end portions of both side surfaces located at both ends in the width direction of the operation unit main body 73. At this time, the two protruding piece portions 74b and 75b are in positions facing each other via the operation portion main body 73, and the two protruding piece portions 74b and 75b support the operation portion main body 73 so as to be sandwiched from both sides in the width direction. Yes.

Next, the assembly structure of the engraving knife 1 of this embodiment will be described.
In the engraving sword 1 of this embodiment, as shown in FIGS. 12 and 13, the core member 17 and the protection member 4 are located inside the outer cylinder member 18 in a state where the protection member 4 is placed on the core member 17. Is inserted. Further, the core member 17 and the outer cylinder member 18 are integrated with each other by an appropriate means such as screwing, use of an adhesive, or caulking in a state where the front portion of the core member 17 is inserted into the front portion of the outer cylinder member 18. Installed. And the handle | body main-body part 12 is formed of the core member 17 and the outer cylinder member 18 which were attached integrally in this way. At this time, the protective member 4 is surrounded by the outer cylinder member 18 in the front portion of the handle body 12. Further, in the rear part of the handle body 12, the protection member 4 is surrounded by the core member 17 and the outer cylinder member 18 except for the upper part. In addition, in the rear part of the handle body 12, the upper part of the protection member 4 is open to the outside.
Further, the blade body portion 3 is inserted into the blade body attaching portion 33 of the core member 17, and the core member 17 and the blade body portion 3 are also integrally attached. The blade part 3 is made of a suitable metal such as steel, and a blade edge 5 is formed at the front end portion. At this time, the shape of the blade edge 5 is a so-called flat blade.

  At this time, the front notch portion 50 of the outer cylinder member 18 is positioned above the engaging groove 35 of the core member 17, and the engaging groove 35 is exposed to the outside (not shown). ). And as FIG. 14 shows, the latching piece 73b formed in the main-body part 73a of the operation part 7 is the state inserted in the engaging groove 35 from the upper direction. As a result, the operation unit 7 is hooked in a state where it cannot move relative to the core member 17.

  If attention is paid to the inside of the handle main body 12, the front sliding grooves 78 and 79 are formed at both ends in the width direction of the handle main body 12, as shown in FIG. ing. The front sliding grooves 78 and 79 are gap portions formed between the inner peripheral surface of the outer cylinder member 18 and the outer peripheral surface of the core member 17, and extend in the front-rear direction of the handle body portion 12. The cross-sectional shape of the front sliding grooves 78 and 79 is substantially the same as the cross-sectional shape of the standing wall portions 68 and 69 that are part of the protective member 4. Accordingly, the standing wall portions 68 and 69 of the protection member 4 can be inserted into the front sliding grooves 78 and 79 formed inside the handle main body portion 12. And the protection member 4 is attached to the handle | body main-body part 12 in the state which inserted the standing wall parts 68 and 69 in these front sliding grooves 78 and 79. As shown in FIG. At this time, the lower end surfaces of the protruding portions 70 and 71 formed on the standing wall portions 68 and 69 are in contact with the step portions 81 and 82 formed on the core member 17 from above. As shown in FIG. 3 and the like, the step portions 81 and 82 are respectively formed at both end portions in the width direction of the core member 17, and both are located slightly above the center in the vertical direction. The core member 17 extends across the entire area in the front-rear direction.

  On the other hand, as shown in FIG. 16, the projecting pieces 47 and 47 of the outer cylinder member 18 are positioned above the groove portions 42 and 43 in the rear portion of the handle body 12. At this time, the protruding pieces 47 and 47 block a part of the opening located above the groove portions 42 and 43, and partially restrict the regions of the groove portions 42 and 43. Further, gaps 84 and 85 that are continuous with the groove portions 42 and 43 are formed between the protruding pieces 47 and 47 and the core member 17. The gaps 84 and 85 are continuous with the groove portions 42 and 43 in the lower part, and the upper part is open to the outside.

  Here, rear sliding grooves 86 and 87 are formed in the rear portion of the handle body portion 12 in the vicinity of both ends in the width direction of the handle body portion 12. The rear sliding grooves 86 and 87 are spaces in which the gaps 84 and 85 and the groove portions 42 and 43 are continuously formed, and extend in the front-rear direction of the handle body portion 12. The cross-sectional shapes of the rear sliding grooves 86 and 87 are substantially the same as the cross-sectional shapes of the front sliding grooves 78 and 79, as shown in FIGS. However, while the upper portions of the front sliding grooves 78 and 79 are closed, the rear sliding grooves 86 and 87 have portions that are located above the step portions 81 and 82 of the core member 17 open to the outside. Yes.

  Here, the front sliding grooves 78 and 79 formed in the front portion of the handle body 12 and the rear sliding grooves 86 and 87 formed in the rear portion of the handle body 12 are formed in the longitudinal direction of the handle body 12. And are formed with integral sliding grooves 89 and 90. As shown in FIGS. 2, 15, and 16, the sliding grooves 89 and 90 penetrate the inside of the handle main body 12 in the front-rear direction, and are formed at the front end and the rear end of the handle main body 12, respectively. Is continuous with the outside through the openings.

  In the engraving knife 1 of this embodiment, as shown in FIGS. 1 and 12, the front end portion of the grip portion 13 is attached to the rear end portion of the handle body portion 12. At this time, as shown in FIGS. 12, 17, and 18, the protrusion 38 formed on the rear standing wall portions 25 and 26 of the core member 17 is inserted into the rotation through hole 64 formed on the engagement protrusion 60 of the grip portion 13. , 38 are inserted. Specifically, the engagement protrusion 60 is sandwiched between the two rear standing wall portions 25 and 26, and the two protrusions 38 and 38 of the core member 17 are respectively formed from both ends in the width direction of the engagement protrusion 60. The rotation through-hole 64 is inserted inside. The protrusions 38 and 38 have a size that fits almost exactly into the front part 64a or the rear part 64c of the rotation through hole 64.

Further, at this time, as shown in FIG. 18, the engagement flat plate portion 39 of the core member 17 is fitted in the latching groove 63 formed in the engagement protrusion 60 of the grip portion 13.
This is the end of the description of the assembly structure of the engraving knife 1 of this embodiment.

  The engraving sword 1 of the present embodiment switches between a protective posture in which the protective member 4 is positioned around the blade body 3 or the blade edge 5 and an open posture in which the protective member 4 is not positioned around the blade body portion 3 and the blade edge 5. be able to. Hereinafter, an example of switching from the protective posture to the open posture will be described with reference to FIG.

  When the engraving sword 1 of the present embodiment is in the protective posture, as shown in FIG. 19A, the front side portion of the protective member 4 protrudes forward from the front end of the handle body portion 12, and the guard portion 6 is a blade. It will be in the state located around the body part 3 and the blade edge | tip 5. FIG. Further, most of the rear side portion of the protection member 4 is located in the sliding grooves 89 and 90 (see FIG. 17 and the like) inside the handle body 12. Further, the operation unit 7 is exposed from the upper part of the handle body 12.

  In this protected posture, when the operation projection 73c of the operation unit 7 is pressed from above, the latching piece 73b moves upward as shown in FIG. 19B. That is, since the operation unit 7 is a flexible member, the operation unit main body 73 can change the posture with respect to the support pieces 74 and 75 (see FIG. 14). In addition, since the support pieces 74 and 75 support the front from the rear end of the operation unit main body 73, when the vicinity of the rear end of the operation unit main body 73 moves downward, the vicinity of the front end of the operation unit main body 73 moves upward. To do. The vicinity of the front end of the operation portion main body 73 moves upward, and the latching piece 73b moves upward, whereby the engagement between the latching piece 73b and the engagement groove 35 is released. At this time, the front notch 50 is located at the upper part of the engagement groove 35, and the upper part of the engagement groove 35 is open. Therefore, the posture change of the operation unit main body 73 is not hindered.

  When the operation unit 7 is moved rearward in a state where the engagement between the latching piece 73b and the engagement groove 35 is released, the protection member 4 moves rearward as the operation unit 7 moves. Specifically, the standing wall portions 68 and 69 of the protection member 4 slide rearward in a state where the standing wall portions 68 and 69 are fitted in the sliding grooves 89 and 90 formed inside the handle body portion 12. When the protective member 4 continues to move backward, the inner peripheral surface of the guard portion 6 comes into contact with the step forming portion 24 formed inside the handle body portion 12 as shown in FIG. As a result, the rearward movement of the protection member 4 is completed, and the protection member 4 is in an open posture in which the protection member 4 is not positioned around the blade body portion 3.

  At this time, as shown in FIG. 19C, the front portion of the protection member 4 and the guard portion 6 are located in the internal space of the handle body portion 12. More specifically, the standing wall portions 68 and 69 of the protection member 4 and the rear portion of the guard portion 6 are located in the sliding grooves 89 and 90 (not shown). Further, the front portion of the guard portion 6 is formed below the front end side of the handle body portion 12 and is located in a space 92 positioned in front of the step forming portion 24.

At this time, as shown in FIG. 19C, the rear portion of the protection member 4 protrudes rearward from the rear end of the handle body portion 12 and enters the internal space 57 formed in the grip portion 13. In the open posture of the engraving sword 1 of the present embodiment, since almost all of the rear part of the protection member 4 protruding from the rear of the handle body 12 is stored in the internal space 57, it may become an obstacle during use. Absent.
This is the end of the description of switching from the protective posture to the open posture.

  In the present embodiment, when switching from the open posture to the protective posture, the switching can be performed by performing the reverse procedure of switching from the protective posture to the open posture.

  Furthermore, in the engraving sword 1 of the present embodiment, the handle 2 is expanded into a long bar shape, the handle 2 is folded, and the handle main body 12, the blade body 3, and the operation unit 7 are stored inside the grip 13. It is possible to switch between non-use states. Hereinafter, an example of switching from the use state to the non-use state will be described with reference to FIGS. 20 and 21, the illustration of the projection 38 on one side of the two projections 38 is omitted.

  When the engraving sword 1 of the present embodiment is in use, as shown in FIG. 20A, the two protrusions 38 are fitted into the rear part 64 c of the rotation through hole 64. Yes. Furthermore, the engaging flat plate portion 39 of the core member 17 is fitted in the engaging groove 63 formed in the engaging protrusion 60 of the grip portion 13. As a result, the grip portion 13 is fixed to the handle body portion 12.

  In this state of use, when the grip portion 13 is moved rearward relative to the handle main body portion 12, the two protrusions 38, 38 are both formed in the rotation through hole 64 as shown in FIG. It moves relative to the front portion 64a and is fitted into the front portion 64a. Then, the engagement between the engagement flat plate portion 39 and the latching groove 63 is released.

  More specifically, a step portion 64d is provided at a portion that becomes a boundary between the central portion 64b and the rear portion 64c of the rotation through hole 64 (see FIG. 10). When the projections 38 and 38 are located at the rear portion 64 c, the stepped portion 64 d prevents the projections 38 and 38 from moving toward the central portion 64 b, so that the projections 38 and 38 are located with respect to the rotation through hole 64. It cannot move relatively. However, if the grip portion 13 is moved backward relative to the handle body portion 12 with a strong force, such as by strongly pulling the handle body portion 12 or the grip portion 13, the stepped portion 64d is elastically deformed and the projections 38, 38 can move to the center portion 64b side. That is, when the projections 38 are fitted in the rear part 64c of the rotation through hole 64, the handle body part 12 is pulled strongly forward with respect to the grip part 13, or the grip part 13 is moved to the handle body part. The projections 38 can be moved toward the central portion 64b side and further toward the front portion 64a side of the turning through-hole 64 by pulling strongly toward the rear side.

  When the engraving sword 1 is in use, as described above, unless a strong force is applied to the grip portion 13 or the handle main body portion 12 in a specified direction, the engagement between the projections 38 and 38 and the rear portion 64c, and the engagement flat plate The engagement between the portion 39 and the latching groove 63 is not released. Therefore, the grip portion 13 does not change its posture with respect to the handle main body portion 12 when the engraving sword 1 is used, and the handle portion 2 can be used as if it were an integral rod-like handle.

  Then, the grip portion 13 is rotated with respect to the handle body portion 12 in a state where the two protrusions 38 and 38 are both fitted in the front portion 64a of the rotation through hole 64 (the state shown in FIG. 20B). If it does, the attitude | position of the grip part 13 will be changed and it will be in the state (state shown by FIG.20 (c)) which the handle | pattern part 2 bent. That is, in a state where the two protrusions 38 and 38 are both fitted in the front portion 64a of the rotation through hole 64, the grip portion 13 and the handle main body portion 12 can relatively rotate with the protrusions 38 and 38 as fulcrums. It has become.

When the grip portion 13 is rotated as it is, almost all the portions of the handle main body portion 12, the blade body portion 3, and the protection member 4 are placed in the internal space 57 of the grip portion 13 as shown in FIG. The stored unused state. In this non-use state, the operation protrusion 73 c of the operation portion 7 is inserted into the grip inner groove portion 65 formed in the internal space 57 of the grip portion 13.
This is the end of the description of switching from the use state to the non-use state.

  In the present embodiment, when switching from the non-use state to the use state, the switching can be performed by performing a procedure reverse to the case of switching from the use state to the non-use state.

  By the way, the engraving sword 1 of this embodiment can be used in the protection posture which arranged the guard part 6 around the blade part 3 as mentioned above (refer FIG. 22). By using the engraving sword 1 while holding the handle 2 in such a state, the engraving sword 1 can be safely used even by a person unfamiliar with the handling of the blade. In addition, as shown in FIG. 23, the engraving knife 1 of the present embodiment can be used in an open posture in which the guard portion 6 is retracted from the periphery of the blade body portion 3. Thus, when a person skilled in handling the blade uses the engraving sword 1, the guard unit 6 does not hinder the cutting operation using the engraving sword 1.

  Further, as shown in FIG. 22, the engraving sword 1 of the present embodiment has an upper guard portion 6 that forms the front end portion of the protection member 4 (above FIG. 22, and when the engraving sword 1 is used. ). More specifically, the standing wall portions 68 and 69 that form most of the protection member 4 extend along the front-rear direction of the engraving knife 1. A semi-annular guard portion 6 projects obliquely upward (upward in FIG. 22) from the front ends of the standing wall portions 68 and 99. In other words, the front end portion of the protection member 4 is bent upward (upward in FIG. 22).

  Therefore, as shown in FIG. 22, a space 92 for accommodating the guard portion 6 in the open posture is formed in the upper interior (upward in FIG. 22) on the front end side of the handle body 12. Accordingly, as shown in FIG. 23, the guard portion 6 can be stored in the handle body portion 12 by positioning the guard portion 6 in the space 92 in the open posture. However, as shown in FIG. 22, during the protection posture, a part of the space 92 includes the upper surfaces (upper surfaces in FIG. 22) of the standing wall portions 68 and 69 of the protection member 4 and the inner peripheral surface of the handle body portion 12. It becomes a gap formed between the two.

  However, the engraving sword 1 of the present embodiment is configured such that the protective member 4 does not wobble even when a vertical force is applied to the protective member 4 during the protective posture.

  Specifically, as described above, the two standing wall portions 68 and 69 are provided with the protruding portions 70 and 71, respectively (see FIG. 11). Therefore, when the engraving sword 1 is used, as shown in FIG. 24, the protrusions 70 and 71 are located on the inner sides of the standing wall portions 68 and 69 at the lower end portions (the lower ends in FIG. 24) of the two standing wall portions 68 and 69. From the side surface, it protrudes substantially vertically toward the inside in the width direction of the handle main body 12. In other words, the two standing wall portions 68 and 69 have a substantially L-shaped section in the vicinity of the lower end of the standing wall portion 69 on one side, and the section in the vicinity of the lower end of the standing wall portion 68 on the other side has a sectional shape. It has a substantially L shape that is reversed left and right. And the part near the lower end of these standing wall parts 68 and 69 is extended along the front-back direction of the pattern main-body part 12 (engraving sword 1).

  Further, as shown in FIG. 24, in the engraving knife 1 of the present embodiment, sliding grooves 89 and 90 are formed in the internal space of the handle main body 12 by inserting the core member 17 through the outer cylinder member 18. Has been. The sliding grooves 89 and 90 have recesses 95 and 96 that are recessed from the outer side in the width direction of the handle main body 12 to the inner side, with the outer cylinder member 18 and a part of the core member 17 being wall surfaces at the lower end portions, respectively. doing. And the recessed parts 95 and 96 are cross-sectional substantially rectangular shapes, and are extended along the front-back direction of the pattern main-body part 12 (engraving sword 1).

  In the engraving sword 1 of the present embodiment, as shown in FIG. 24, the protrusions 70 and 71 of the protection member 4 are fitted into the recesses 95 and 96 formed in the internal space of the handle body 12. It is in a state. Therefore, even when a vertical force is applied to the protective member 4 during the protective posture (see FIG. 22), the protective member 4 does not move in the vertical direction relative to the handle body portion 12, There is no wobble.

  Furthermore, the engraving sword 1 of this embodiment cannot be switched from the use state to the non-use state when in the open posture. Further, when the engraving sword 1 is not in use, the protective posture is not switched from the open posture. Furthermore, when the switching operation from the use state to the non-use state is performed, the protective posture is not switched to the open posture.

  More specifically, when the engraving knife 1 is in the open position, the rear end portion of the protection member 4 is located in the internal space 57 of the grip portion 13 as shown in FIG. It becomes a state. In this state, the rear end portion of the protective member 4 protruding rearward from the handle main body 12 hinders the relative rotation of the grip portion 13 with respect to the handle main body 12, so that the use state is changed to the non-use state. I can't switch.

  When the engraving sword 1 is not in use, as shown in FIG. 21 (d), the operation protrusion 73 c of the operation unit 7 is positioned inside the grip inner groove 65 of the grip unit 13.

  When the switching operation from the use state to the non-use state is performed, as shown in FIG. 21C, the bottom plate portion 55 of the grip portion 13 includes a vertical component at the rear portion of the handle body portion 12. It extends to. If the engraving sword 1 is to be switched from the protective posture to the open posture in this state, the rear end portion of the protective member 4 protruding rearward from the inside of the handle body portion 12 comes into contact with the bottom plate portion 55 of the grip portion 13. End up. As a result, the protective member 4 cannot move in the rearward direction, and the protective posture cannot be switched to the open posture.

In the above-described embodiment, an example in which the handle portion 2 is folded in two and stored small is shown, but the handle portion of the engraving sword of the present invention is not limited to this. For example, the structure which folds three or more small piece parts like 3 folds and 4 folds may be sufficient.
Moreover, the handle | pattern part of this invention is not restricted to the structure which folds and makes it small. For example, the front end side portion and the rear end side portion of the handle are configured in a cylindrical state with different diameters, and the front end side portion and the rear end portion are moved by moving the front end side portion relative to the rear end side portion in the front-rear direction. A configuration may be adopted in which the other part is accommodated inside any one of the end side parts and the handle portion is folded small.
That is, it is only necessary that the handle can be folded down in a non-use state.

  In the above-described embodiment, the example in which the protection member 4 having the semi-annular guard portion 6 is employed has been described, but the protection member for the engraving sword of the present invention is not limited thereto. For example, the structure which the front-end | tip part of the guard part is spaced apart may be sufficient. That is, the guard part employed in the engraving sword of the present invention may be a wall-shaped guard part provided at each of both ends of the blade body in the width direction.

Moreover, in above-described embodiment, the protection member 4 provided with the operation part 7 provided with the rectangular flat plate-shaped main-body part 73a and the latching piece 73b which protrudes below from the front end of the main-body part 73a as the protection member 4. Although the example employ | adopted was shown, the protection member and operation part in the engraving knife of this invention are not restricted to this. For example, as shown in FIG. 25, the protective member 100 may include an operation portion 101 including an operation protrusion 102 c that has a substantially oval cross section and extends in the vertical direction, and a hook piece 102 b that protrudes upward.
The protective member 100 and the engraving sword 105 that employs such a protective member 100 will be described in detail below with reference to the drawings. The same reference numerals are given to the same parts as those in the above-described embodiment. A description thereof will be omitted.

  The protection member 100 includes an operation unit 101 including an operation unit main body 102 and a support piece 103.

  The operation unit main body 102 occupies most of the operation unit main body 102 and is an operation protrusion 102c that is a main body, a substantially rectangular flat plate-shaped connection plate part 102a that protrudes forward from the vicinity of the lower end of the front end surface of the operation protrusion 102c, It is formed of a latching piece 102b that projects substantially vertically upward from the upper surface of the front end of the plate portion 102a.

  At this time, a slip stopper is formed on the top surface of the operation projection 102c. Specifically, a plurality of small grooves extending in the width direction are provided on the top surface of the operation protrusion 102c, and these form a slip stopper in parallel over substantially the entire front and rear direction. Further, the latching piece 102 b is a protrusion having a substantially rectangular cross section and extending in the width direction of the operation unit 101, and extends over substantially the entire region of the operation unit 101 in the width direction.

  The support piece 103 is a portion having a substantially rectangular parallelepiped outer shape formed at a portion slightly ahead of the rear ends of the two standing wall portions 68 and 69. Two support pieces 103 are provided (one of which is not shown), and are positioned between the two protruding portions 70 and 71 and the operating portion main body 102, respectively, and the operating portion main body 102 and the two protruding portions. 70 and 71 are connected. Therefore, the two support pieces 103 are arranged symmetrically in the width direction of the protection member 100 and protrude inward from the two protrusions 70 and 71, respectively. In other words, the two support pieces 103 are in positions facing each other via the operation unit main body 102 and support the operation unit main body 102 so as to be sandwiched from both sides in the width direction.

  Next, the engraving sword 105 that employs such a protective member 100 will be described.

  In the engraving sword 105, as shown in FIG. 26, an engagement groove 106 is formed in the internal space of the handle body 12. The engagement groove 106 is formed above the internal space (above FIG. 26 and below during use) and is recessed upward. Further, when the engraving sword 105 is in the protective posture, the front end portion of the operation portion main body 102 of the protection member 100 is located in the internal space of the handle main body portion 12, and the latching piece 102 b is fitted in the engagement groove 106. It is in the state.

  As a result, when the engraved sword 105 is in the protective posture, the protective member 100 cannot move relative to the handle body 12.

  Further, when the engraving sword 105 is switched from the protective posture to the open posture, the operation protrusion 102c is pressed from above (upper side in FIG. 26). Then, since the operation unit 101 is a flexible member, the latching piece 102b moves downward (downward in FIG. 26), and the engagement between the latching piece 102b and the engagement groove 106 is released. Become. Then, by moving the operation unit 101 rearward in this state, the protection member 100 moves rearward relative to the handle body 12 and switches to the open posture. At this time, the handle body 12 is formed with a space (not shown) in a portion located below the operation unit 101 (downward in FIG. 26), and does not hinder the posture change of the operation unit 101. It has become.

  By the way, the shape of the grip part of this invention is not restricted to the shape of above-described embodiment. For example, as shown in FIGS. 27 and 28, grip portions 109 provided with grip portions 110 and 110 that are recessed from the outside toward the inside may be provided on both side surfaces facing each other in the width direction of the grip portion 109. Such a grip portion 109 has an advantage that a narrowed and narrow portion is formed in a part of the handle portion of the engraving sword, so that the user can easily hold the engraving sword and can easily perform excavation work.

  In the above-described embodiment, an example in which the blade edge 5 has a shape called a so-called flat blade is shown, but the blade edge shape of the engraving blade of the present invention is not limited to this. For example, a so-called stamp sword, round sword, Asamaru sword, triangular sword, flat sword, round curved sword, or the like may be used. The cutting edge shape of the engraving sword of the present invention may be changed as appropriate.

DESCRIPTION OF SYMBOLS 1,105 Carving sword 2 Handle part 3 Blade body part 4,100 Protection member 5 Cutting edge 6 Guard part 7,101 Operation part 12 Handle body part (tip side part)
13,109 Grip part (rear end side part)
35 Engagement groove 57 Internal space (storage part)

Claims (5)

In the engraving sword provided with a protective member having a handle portion , a blade body portion attached to the handle portion , and a guard portion that can be arranged at least near the blade edge of the blade body portion,
The protective member is attached to the handle portion or the blade body portion, and relatively movable with respect to the handle portion or the blade body portion,
By moving the protection member, it is possible to switch between a protective posture in which the guard portion is located in the vicinity of the blade edge and an open posture in which the guard portion moves away from the periphery of the blade edge,
The handle part can be switched between a use state that is developed in a long shape and a non-use state that is folded into a small piece,
A sword having a protective member in the protective posture in the non-use state.   2. The protective member is attached to the handle portion so as to protrude and retract, and protrudes from the handle portion in the protective posture and retracts into the handle portion in the open posture. The engraving sword described in 1. The handle portion includes a front end side portion located on the blade body portion side, and a rear end side portion,
The engraving sword according to claim 1 or 2, wherein the rear end side portion is rotatable relative to the front end side portion. The handle portion includes a front end side portion located on the blade body portion side, and a rear end side portion,
The rear end side portion has a storage portion that stores at least a part of the front end side portion,
The engraving sword according to any one of claims 1 to 3, wherein, in the non-use state, the distal end side portion is stored in the storage portion.   The engraving sword according to claim 1, wherein the guard portion has a semi-annular portion.

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