JP3245162U - wood splitting tool - Google Patents

Abstract

[Problem] To provide a firewood splitting tool that can reduce the overall size during storage and transportation, and can easily and safely perform firewood splitting work. A firewood splitting tool (10) includes a blade (12) for chopping firewood, and a base (14) that supports the blade (12). The blade portion 12 includes a blade body 18, a blade edge 16 formed at the upper end of the blade body 18 to be sharply pointed upward, and a first engagement portion 20 provided at the lower end of the blade body 18. The base portion 14 includes a base body 26 and a second mating portion 28 that is provided on the base body 26 and into which the first mating portion 20 is removably fitted from above. The second mating part 28 is constituted by a through hole 30 provided in the base body 26, and the first mating part 20 is formed to protrude downward from the lower surface 18a of the blade body 18. [Selection diagram] Figure 2

Description

The present invention relates to a firewood splitting tool used for manually splitting firewood.

Patent Documents 1 and 2 listed below disclose examples of conventional wood splitting tools. The wood splitting tool disclosed in Patent Document 1 is a "wood splitting stand" and has a base part placed on a foundation surface such as the ground, and a blade part and a ring part provided on the base part. The blade portion has an upwardly pointed cutting edge, and the ring portion is arranged around the cutting edge in a plan view. When splitting firewood using a "wood splitting table", the user places the firewood vertically on the cutting edge of the blade and supports the firewood with the ring part. Next, hit the upper end of the firewood with a hammer or the like to make the blade bite into the lower end of the firewood. Then, tap the top of the wood repeatedly until it is completely split.

According to this "wood splitting stand," the wood can be split by hitting the top end of the wood with a hammer, etc., so there is no need to swing the blade down like when using an ax, making the wood splitting process easy and safe. can be done. However, since the base portion, blade portion, and ring portion are integrally formed by welding or the like, there is a problem in that the overall size is large and storage and transportation are difficult.

The wood splitting tool disclosed in Patent Document 2 is a "wedge" and has a blade portion having a sharp cutting edge like a spear tip, and a head portion formed integrally with the blade portion. When splitting firewood using a "wedge," the user places the firewood vertically on the base and presses the cutting edge of the blade against the top end of the firewood. Next, hit the head with a hammer or the like to make the blade bite into the top end of the firewood. Then, hit the head repeatedly until the wood splits completely.

According to this "wedge", since it does not have a base part that supports the blade part, the overall size is small and it is easy to store and transport. However, the user has to support the firewood and the "wedge" with one hand while swinging down a hammer or the like with the other hand, which poses a problem in that the task of chopping firewood is highly difficult.

Design Registration No. 1747426 Design Registration No. 1710327 Publication

The present invention was devised to address the above-mentioned problems, and the purpose is to provide a firewood splitting tool that can reduce the overall size during storage and transportation, and that can perform firewood splitting operations easily and safely. shall be.

In order to achieve the above object, the firewood splitting tool according to the present invention is characterized by having a blade for splitting firewood, and a base for supporting the blade, wherein the blade has a blade body. and a cutting edge formed at the upper end of the blade body to be sharply pointed upward, and a first engaging portion provided at the lower end of the blade body, and the base portion is connected to the base body and the base. The second fitting part is provided on the main body, and the first fitting part is removably fitted from above.

According to this configuration, the blade part can be supported by the base part with the cutting edge facing upward, so the user can hit the upper end of the firewood with a hammer or the like while the firewood is placed vertically on the cutting edge. This allows you to easily and safely split firewood.

Moreover, the user can separate the blade part and the base part and put them together compactly, making it easy to store and transport. In other words, the overall size during storage and transportation can be reduced, making storage and transportation easier. Furthermore, since the first mating part and the second mating part are removably mated, the user can easily attach and detach them.

Another feature of the present invention is that the second mating part is formed of a through hole or a recess provided in the base body, and the first mating part is formed to protrude downward from the lower surface of the blade body. and when the first mating part is fitted into the second mating part, the lower surface of the blade body is brought into contact with the upper surface of the base body.

In this configuration, the first mating part is fitted into the second mating part, thereby suppressing movement of the blade part in the horizontal direction with respect to the base part. Furthermore, since the lower surface of the blade body is in contact with the upper surface of the base body, the force applied to the blade portion during wood-splitting work is received by the upper surface of the base body. Therefore, the wood-splitting tool can be stabilized during wood-splitting work, and the user can easily perform the wood-splitting work.

Another feature of the present invention is that the second mating part is composed of a polygonal through hole or recess in plan view, and the first mating part has a cross section having the same shape as the polygon. It is in.

In this configuration, since the first mating part is fitted into the second mating part, rotation of the blade part with respect to the base part is suppressed, so that the wood splitting tool can be stabilized during wood splitting work, and the user can makes it easy to split firewood.

Another feature of the present invention is that, when the direction in which the ridgeline of the cutting edge extends in plan view is the front-back direction, one surface and the other surface of the blade portion in the front-back direction are formed into flat surfaces that are parallel to each other. It is in.

With this configuration, the blade portion can be easily formed by cutting a plate-shaped material having two main surfaces that are parallel to each other.

Another feature of the present invention is that the blade body has a first portion that is continuous with the cutting edge, and the direction in which the ridgeline of the cutting edge extends in plan view is the front-back direction, and the front-back direction is orthogonal to the front-back direction and the up-down direction. When the direction is taken as the left-right direction, the length of the first portion in the left-right direction is determined to gradually increase from the upper end to the lower end of the first portion.

With this configuration, the overall shape of the cutting edge and the first part is wedge-shaped, so after creating a crack in the lower end of the firewood with the cutting edge, the first part can push out the crack, allowing the firewood to be split more efficiently. It can be divided.

Another feature of the present invention is that one side and the other side of the first portion in the left-right direction have curved surfaces concave toward the center of the first portion in the left-right direction.

In this configuration, since one side and the other side in the left-right direction of the first part have curved surfaces concave toward the center side in the left-right direction of the first part, the upper end of the first part The length of the part and its neighboring parts in the left-right direction becomes shorter. Therefore, the upper end portion of the first portion and its vicinity can be easily inserted into the cracks of the firewood, and each piece of the split firewood can be spread out smoothly along the curved surface.

Another feature of the present invention is that the blade body has a second part formed below the first part, and the length of the second part in the left-right direction is from the upper end to the lower end of the second part. The longest length of the second portion in the left-right direction is set to be longer than the longest length of the first portion in the left-right direction.

In this configuration, since the second part is interposed between the first part and the base part, the first part can be placed upwardly away from the base part, and the second part can be placed next to the first part. It can be wedged into cracks. Therefore, the cracks in the firewood can be sufficiently expanded, and even hard firewood such as hardwood can be reliably split.

Another feature of the present invention is that the upper and lower surfaces of the base portion are formed as flat surfaces parallel to each other, and the length of the base portion in the vertical direction is determined to be the same as the length of the blade portion in the front-rear direction. It is in.

With this configuration, the base portion can be easily formed by cutting a plate-shaped material having two main surfaces that are parallel to each other. Further, since the length of the base portion in the vertical direction is determined to be the same as the length of the blade portion in the front-rear direction, the base portion and the blade portion can be cut out from a common plate-shaped material.

FIG. 2 is a perspective view showing how to use the wood splitting tool according to the first embodiment. It is an exploded perspective view showing the composition of the firewood splitting tool concerning a 1st embodiment. It is a figure showing the composition of the firewood chopping tool concerning a 1st embodiment, (A) is a top view, (B) is a front view, (C) is a right view, and (D) is a bottom view. It is a sectional view showing how to use the firewood splitting tool according to the first embodiment. (A) is a perspective view showing the configuration of a blade according to a first modification, and (B) is a perspective view showing the configuration of a blade according to a second modification. It is an exploded perspective view showing the composition of the firewood chopping tool concerning a 2nd embodiment. It is a sectional view showing how to use a firewood splitting tool according to a second embodiment. It is an exploded perspective view showing the composition of the firewood chopping tool concerning a 3rd embodiment. It is an exploded perspective view showing the composition of the firewood chopping tool concerning a 4th embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a wood splitting tool according to the present invention will be described with reference to the drawings. Note that the directions "front, rear, left, right, top, and bottom" used in the following description correspond to the directions indicated by arrows in the drawings.

(First embodiment)
FIG. 1 is a perspective view showing how to use a wood splitting tool 10 according to the first embodiment. FIG. 2 is an exploded perspective view showing the configuration of the wood splitting tool 10. 3 is a diagram showing the configuration of the wood splitting tool 10, in which FIG. 3(A) is a plan view, FIG. 3(B) is a front view, FIG. 3(C) is a right side view, and FIG. 3(D) is a bottom view. It is a diagram. In addition, in FIG. 2, the blade portion 12 of the wood splitting tool 10 in the completed state is shown by a chain double-dashed line (imaginary line).

As shown in FIG. 1, the firewood splitting tool 10 is used by being placed on a basic surface G such as the ground when splitting firewood E with the force of a user M, and has a blade part for splitting the firewood E. 12, and a base portion 14 that supports the blade portion 12 on the base surface G.

As shown in FIG. 2, the blade portion 12 includes a cutting edge 16, a blade body 18, and a first mating portion 20 provided at the lower end of the blade body 18. In the following explanation, the direction in which the ridgeline 16a of the cutting edge 16 extends in plan view is referred to as the "back-and-forth direction," the vertical direction is referred to as the "up-down direction," and the direction orthogonal to the "back-and-forth direction" and the "up-down direction" is referred to as the "left-right direction." "direction".

The entire blade portion 12 shown in FIG. 2 is cut out from a plate-shaped metal (such as iron) material using a laser cutting machine. Therefore, as shown in FIG. 3(C), one surface (front surface) 12a and the other surface (rear surface) 12b of the blade portion 12 in the front-rear direction are formed as flat surfaces that are parallel to each other. In other words, the blade edge 16, blade body 18, and first mating portion 20 shown in FIG. 2 are integrally formed with the same thickness.

The length (thickness) T in the front-rear direction of the blade portion 12 shown in FIG. 3(C) is not particularly limited, but is set to about 15 mm in this embodiment. In addition, in order to cut out the blade part 12 from an iron plate-shaped material using a laser cutting machine without difficulty, it is desirable that the length (thickness) T in the front-rear direction is determined to be shorter than 30 mm. Further, in order to efficiently split firewood E (FIG. 1), it is desirable that the length (thickness) T in the front-rear direction is set to be longer than 10 mm.

The blade edge 16 shown in FIG. 2 is a portion that bites into the lower end of the firewood E (FIG. 1) to create a crack F (FIG. 4), and is formed at the upper end of the blade body 18 so as to be pointed upward. In this embodiment, the longest length (width) of the cutting edge 16 in the left-right direction is set to about 3 mm. Note that the longest length (width) of the cutting edge 16 in the left-right direction is not particularly limited, and may be changed as appropriate within a range that allows it to bite into the firewood E.

The blade main body 18 shown in FIG. 2 is a portion that bites into the crack F (FIG. 4) of the firewood E split by the blade edge 16, and has a first portion 22 that is continuous with the blade edge 16. In the wood splitting tool 42 of the second embodiment shown in FIG. 6, the blade main body 18 of the blade part 44 has the first part 22 and the second part 46, whereas in the wood splitting tool 10 of this embodiment, the blade The main body 18 does not have the second portion 46, and the entire blade main body 18 serves as the first portion 22.

As shown in FIG. 3(B), the length (width) of the first portion 22 (i.e., the blade body 18) in the left-right direction is set to gradually increase from the upper end to the lower end of the first portion 22. It is being

In this embodiment, one surface (left surface) 22a of the first portion 22 in the left and right direction has a first curved surface 24a that is recessed toward the center of the first portion 22 in the left and right direction. The other surface (right surface) 22b has a second curved surface 24b that is recessed toward the center of the first portion 22 in the left-right direction. Therefore, the length (width) in the left-right direction of the upper end portion of the first portion 22 and its vicinity is shorter than that in the case where each of the left surface 22a and the right surface 22b is formed by one plane (FIG. 5(A)). Therefore, it is easy to get stuck in the cracks F of the firewood E shown in FIG.

The overall vertical length (height) H1 of the blade edge 16 and the blade body 18 shown in FIG. 3(B) is not particularly limited, but is set to about 60 mm in this embodiment.

The shortest horizontal length (width) W1 of the first portion 22 shown in FIG. 3(B) is determined to be the same as the longest horizontal length (width) of the cutting edge 16, and in this embodiment, the It is set at 3mm. The longest horizontal length (width) W2 of the first portion 22 is determined in relation to the overall vertical length (height) H1 of the blade edge 16 and the blade body 18 to efficiently split the firewood E (Fig. 1). In this embodiment, it is set to approximately 50 mm.

The first mating part 20 shown in FIG. 2 cooperates with the second mating part 28 of the base part 14 to suppress horizontal movement of the blade part 12 placed on the upper surface 26a of the base body 26. It protrudes downward from the center of the lower surface 18a of the blade main body 18 and is formed in the shape of a rectangular parallelepiped with a rectangular (square in this embodiment) cross section.

In other words, the lower surface 18a of the blade main body 18 shown in FIG. In the embodiment, it is formed in the shape of a protrusion that protrudes downward from a square virtual area.

As shown in FIG. 2, the base portion 14 includes a base body 26 and a second mating portion 28, which is provided on the base body 26 and into which the first mating portion 20 is removably fitted from above. .

The entire base portion 14 shown in FIG. 2 is cut out from a plate-shaped metal (such as iron) material using a laser cutting machine. Therefore, as shown in FIG. 3(C), one surface (upper surface) and the other surface (lower surface) in the vertical direction of the base portion 14, that is, the upper surface 26a and the lower surface 26b of the base body 26 are flat surfaces that are parallel to each other. is formed.

The base main body 26 shown in FIG. 2 is a part that supports the blade part 12 during wood-splitting work, and is formed into a rectangular (square in this embodiment) plate shape with rounded corners in plan view.

As shown in FIG. 3(C), the vertical length (height) H3 of the base body 26 is determined to be the same as the longitudinal length (thickness) T of the blade portion 12, and in this embodiment, , is set at approximately 15 mm. The vertical length (height) of the base portion 14 matches the vertical length (height) H3 of the base body 26. Therefore, both the blade part 12 and the base part 14 can be cut out from a common plate-shaped material.

As shown in FIG. 3(D), the length W3 in the front-back direction and the length W4 in the left-right direction of the base body 26 are set to be equal to or longer than the length (width) in the left-right direction of the lower surface 18a of the blade body 18. In this embodiment, it is set to approximately 50 mm. The left-right length (width) of the lower surface 18a of the blade body 18 is the same as the longest left-right length (width) W2 of the first portion 22. Therefore, the upper surface 26a of the base body 26 can reliably receive the force applied to the blade portion 12 during the wood-splitting operation.

The second mating part 28 shown in FIG. 2 cooperates with the first mating part 20 of the blade part 12 to suppress horizontal movement of the blade part 12 placed on the upper surface 26a of the base body 26. The through hole 30 is formed in the center of the base body 26 and has a rectangular shape (square in this embodiment) in plan view.

As shown in FIG. 3(B), the vertical length of the through hole 30 is the same as the vertical length (height) H3 of the base body 26, and the vertical length ( height) is set slightly longer than H2. Therefore, when the first mating part 20 is fitted into the second mating part 28 as shown in FIG. 2, the lower surface 18a of the blade main body 18 is brought into surface contact with the upper surface 26a of the base main body 26.

As shown in FIG. 3(D), the length V1 in the front-back direction and the length U1 in the left-right direction of the through hole 30 are slightly longer than the length V2 in the front-back direction and the length U2 in the left-right direction of the first mating part 20. It is determined. Therefore, horizontal movement of the blade part 12 with respect to the base part 14 can be suppressed, and the first mating part 20 can be easily attached to and detached from the second mating part 28.

(How to use wood splitting tools)
FIG. 1 is a perspective view showing how to use the wood splitting tool 10, and FIG. 4 is a sectional view showing how to use the wood splitting tool 10. As shown in FIG. 1, when splitting firewood E using the wood splitting tool 10, the user M first places the wood splitting tool 10 on a foundation surface G made of the ground, stones, wood, and the like. The base surface G is desirably flat and hard in order to stabilize the wood splitting tool 10.

Next, the user M places the firewood E vertically on the cutting edge 16 of the blade part 12, supports the firewood E with one hand N, and holds the hammer Q with the other hand (not shown). Then, the upper end of the firewood E is hit with the hammer Q to cause the cutting edge 16 to bite into the lower end of the firewood E. When the cutting edge 16 bites into the lower end of the firewood E, a crack F (FIG. 4) is generated at the lower end.

Thereafter, the user M repeatedly strikes the upper end of the firewood E, causing the blade 12 to dig deep into the crack F (FIG. 4). As shown in FIG. 4, when the blade part 12 bites deep into the crack F, the lower end of each piece of the split firewood E hits the left surface 22a and right surface 22b of the first portion 22. Then, each piece is widened and divided along these surfaces 22a and 22b.

(Effects of the first embodiment)
According to the firewood splitting tool 10 according to the first embodiment, the following effects can be achieved by the above-mentioned configuration. That is, as shown in FIG. 1, since the blade part 12 can be supported by the base part 14 with the cutting edge 16 of the blade part 12 facing upward, the user M can place firewood E vertically on the cutting edge 16. The upper end of the firewood E can be struck with a hammer Q while the firewood E is placed, and the firewood E can be easily and safely split.

Moreover, the user M can separate the blade part 12 and the base part 14 and put them together compactly, so that they can be easily stored and transported. Furthermore, since the first mating part 20 and the second mating part 28 shown in FIG. 2 are mated in a detachable manner, the user M can easily attach and detach them.

As shown in FIG. 2, by fitting the first mating part 20 into the second mating part 28, horizontal movement of the blade part 12 with respect to the base part 14 is suppressed. Furthermore, since the lower surface 18a of the blade body 18 is brought into surface contact with the upper surface 26a of the base body 26, the force applied to the blade portion 12 during wood-splitting work is received by the upper surface 26a of the base body 26. Therefore, the firewood splitting tool 10 can be stabilized during the firewood splitting work, and the user M can easily perform the firewood splitting work.

By fitting the first mating part 20 shown in FIG. 2 into the second mating part 28, rotation of the blade part 12 with respect to the base part 14 is suppressed, so that the firewood splitting tool 10 is stabilized during the wood-splitting operation. This makes it easier for user M to split firewood.

As shown in FIG. 3(C), one surface (front surface) 12a and the other surface (rear surface) 12b in the front-rear direction of the blade portion 12 are formed as flat surfaces that are parallel to each other, so two surfaces that are parallel to each other are formed. The blade portion 12 can be easily formed by cutting a plate-shaped material having a main surface.

As shown in FIG. 2, the overall shape of the cutting edge 16 and the first portion 22 (that is, the blade body 18) is wedge-shaped, so after the cutting edge 16 creates a crack F (FIG. 4) at the lower end of the firewood E. , the first portion 22 (that is, the blade body 18) can spread out the crack F, and the firewood E can be split efficiently.

As shown in FIG. 3(B), one surface (left surface) 22a and the other surface (right surface) 22b of the first portion 22 in the left and right direction are curved surfaces 24a and 24b concave toward the center of the first portion 22 in the left and right direction. Therefore, the length of the upper end portion of the first portion 22 and its neighboring portion in the left-right direction becomes shorter. Therefore, the upper end of the first portion 22 and its vicinity can be easily inserted into the cracks F (FIG. 4) of the firewood E, and each piece of the split firewood E can be aligned along the curved surfaces 24a, 24b. Can be expanded smoothly.

As shown in FIG. 3(C), one surface (upper surface) and the other surface (lower surface) in the vertical direction of the base portion 14, that is, the upper surface 26a and the lower surface 26b of the base body 26 are formed into flat surfaces parallel to each other. Therefore, the base portion 14 can be easily formed by cutting a plate-shaped material having two main surfaces parallel to each other. Further, since the vertical length (height) H3 of the base portion 14 is determined to be the same as the length (thickness) T in the front-back direction of the blade portion 12, both the blade portion 12 and the base portion 14 can be mounted on a common board. It can be cut out from a shaped material.

(Modified example)
The implementation of the present invention is not limited to the first embodiment described above, and various changes can be made without departing from the purpose of the present invention. That is, in the first embodiment, the blade portion 12 and the base portion 14 are made of metal such as iron, but they may be made of a hard material other than metal such as ceramics.

In the first embodiment, the blade part 12 and the base part 14 are formed by cutting a plate-shaped material with a laser cutting machine, but they can also be formed by other methods such as forging, casting, and 3D printing. You can.

In the first embodiment, the base body 26 is formed into a square in plan view, but the base body 26 may be formed in a rectangular shape in plan view, or a polygon other than a quadrangle, a circle, or an ellipse in plan view. It may be formed into a shape, irregular shape, etc.

In the first embodiment, the through hole 30 constituting the second mating portion 28 is formed in a square shape in plan view, but the through hole 30 may be formed in a rectangular shape in plan view, or may be formed in a rectangular shape in plan view. It may be formed into a polygon other than a quadrangle, a circle, an ellipse, an irregular shape, or the like. In this case, the cross section of the first mating portion 20 may be formed to have the same shape as the through hole 30 in plan view.

In the first embodiment, the second mating portion 28 is configured with the through hole 30, but the second mating portion 28 may be configured with a concave portion such as a bottomed hole or a groove.

In the first embodiment, the vertical length (height) H3 of the base body 26 is set to be the same as the front-back length (thickness) T of the blade portion 12, but these are set to different lengths. May be determined.

FIG. 5(A) is a perspective view showing the structure of the blade part 32 according to the first modification, and FIG. 5(B) is a perspective view showing the structure of the blade part 36 according to the second modification. In the first embodiment, the left surface 22a of the first portion 22 constituting the blade portion 12 has the first curved surface 24a, and the right surface 22b of the first portion 22 has the second curved surface 24b. 22a and the right side 22b may be formed only from flat surfaces.

For example, like the blade portion 32 shown in FIG. 5(A), the left surface 22a of the first portion 22 is formed by one plane 34a, and the right surface 22b of the first portion 22 is formed by one plane 34b. may be done.

Further, like the blade portion 36 shown in FIG. 5(B), the left surface 22a of the first portion 22 is formed of two planes 38a and 40a with different inclination angles, and the right surface 22b of the first portion 22 is It may be formed of two planes 38b and 40b with different inclination angles.

(Second embodiment)
FIG. 6 is an exploded perspective view showing the configuration of a wood splitting tool 42 according to the second embodiment. FIG. 7 is a sectional view showing how to use the wood splitting tool 42. In the wood splitting tool 10 of the first embodiment, the blade main body 18 of the blade part 12 has a first portion 22 that is continuous with the cutting edge 16, but as in the wood splitting tool 42 shown in FIG. The blade body 18 may include a second portion 46 in addition to the first portion 22.

As shown in FIG. 6 , the blade body 18 of the blade portion 44 includes, in addition to the first portion 22 , a second portion 46 formed below the first portion 22 . The length of the second portion 46 in the left-right direction is determined to gradually increase from the upper end of the second portion 46 toward the lower end thereof. Further, the longest length of the second portion 46 in the left-right direction is set to be longer than the longest length of the first portion 22 in the left-right direction.

Furthermore, the left surface 46a of the second portion 46 has a first curved surface 48a that is recessed toward the center of the second portion 46 in the left-right direction, and the right surface 46b of the second portion 46 has a first curved surface 48a that is recessed toward the center of the second portion 46 in the left-right direction. It has a second curved surface 48b that is recessed toward the center. Note that, similarly to the first portion 22 shown in FIGS. 5(A) and 5(B), the left surface 46a and the right surface 46b may be formed only of flat surfaces.

In this configuration, since the second part 46 is interposed between the first part 22 and the base part 14, the first part 22 can be placed at a position upwardly away from the base part 14, and The second portion 46 can be inserted into the cracks F (FIG. 7) of the firewood E. Therefore, as shown in FIG. 7, the cracks F in the firewood E can be sufficiently widened, and even hard firewood such as hardwood can be reliably split.

(Third embodiment)
FIG. 8 is an exploded perspective view showing the configuration of a wood splitting tool 50 according to the third embodiment. In the wood splitting tool 10 of the first embodiment, the second mating part 28 of the base part 14 is configured with the through hole 30, and the first mating part 20 of the blade part 12 has a protrusion shape that is mated with the through hole 30. However, as in the wood splitting tool 50 shown in FIG. The recess 56 may be fitted into the recess 28 .

(Fourth embodiment)
FIG. 9 is an exploded perspective view showing the configuration of a wood splitting tool 58 according to the fourth embodiment. In the firewood splitting tool 10 of the first embodiment, the first engagement part 20 of the blade part 12 is formed in a protrusion shape that engages with the through hole 30, but the blade part 60 of the wood splitting tool 58 shown in FIG. As such, the protruding first mating portion 20 (FIG. 2) may be omitted.

In the wood splitting tool 58 shown in FIG. 9, the second mating part 28 of the base part 62 is configured with a groove-shaped recess 64, and the lower end part of the blade main body 18 constituting the blade part 60 can be mated with the recess 64. It is composed of That is, the lower end portion of the blade main body 18 serves as the first mating portion 66.

According to this configuration, horizontal movement of the blade part 60 with respect to the base part 62 can be suppressed, and the first mating part 66 can be easily attached to and detached from the second mating part 28. Further, the bottom surface 64a of the recess 64 can reliably receive the force applied to the blade portion 60 during wood-splitting work.

E...Firewood, F...Crack, G...Foundation surface, M...User, N...One hand, Q...Hammer, 10...Firewood splitting tool, 12...Blade, 12a...One side (front), 12b...Other side (rear surface), 14...base part, 16...blade edge, 16a...ridge line, 18...blade body, 18a...bottom surface, 20...first mating part, 22...first part, 22a...one side (left side), 22b... Other surface (right surface), 24a...first curved surface, 24b...second curved surface, 26...base body, 26a...top surface, 26b...bottom surface, 28...second mating part, 30...through hole, 32...blade part, 34a , 34b...plane, 36...blade portion, 38a, 38b, 40a, 40b...plane, 42...wood splitter, 44...blade portion, 46...second portion, 46a...left surface, 46b...right surface, 48a...first curved surface, 48b...second curved surface, 50...wood splitting tool, 52...base portion, 54...blade portion, 56...recessed portion, 58...wood splitting tool, 60...blade portion, 62...base portion, 64...recessed portion, 64a...bottom surface, 66... First mating part.

Claims (8)

A firewood splitting tool comprising a blade for splitting firewood and a base for supporting the blade,
The blade portion includes a blade main body, a cutting edge formed at an upper end portion of the blade body to be sharply pointed upward, and a first mating portion provided at a lower end portion of the blade main body,
The base portion includes a base body and a second engagement portion provided on the base body and into which the first engagement portion is removably fitted from above. The second mating portion is composed of a through hole or a recess provided in the base main body,
The first mating part is formed to protrude downward from the lower surface of the blade main body,
The wood splitter according to claim 1, wherein when the first mating part is fitted into the second mating part, a lower surface of the blade body is brought into contact with an upper surface of the base body. The second mating portion is configured with a polygonal through hole or recess in plan view,
The wood splitting tool according to claim 2, wherein the first mating portion has a cross section having the same shape as the polygon. When the direction in which the ridgeline of the cutting edge extends in plan view is the front-back direction,
The wood splitting tool according to claim 1 or 2, wherein one surface and the other surface of the blade portion in the front-rear direction are formed as flat surfaces that are parallel to each other. The blade body has a first portion continuous with the blade edge,
When the direction in which the ridgeline of the cutting edge extends in plan view is defined as the front-back direction, and the direction perpendicular to the front-back direction and the up-down direction is defined as the left-right direction,
The wood splitter according to claim 1 or 2, wherein the length of the first portion in the left-right direction is determined to gradually increase from the upper end toward the lower end of the first portion. The wood splitting tool according to claim 5, wherein one side and the other side of the first portion in the left-right direction have curved surfaces concave toward the center of the first portion in the left-right direction. The blade body has a second portion formed below the first portion,
The length in the left-right direction of the second portion is determined to gradually increase from the upper end to the lower end of the second portion,
The wood splitter according to claim 5, wherein the longest length in the left-right direction of the second portion is set to be longer than the longest length in the left-right direction of the first portion. The upper surface and the lower surface of the base part are formed as flat surfaces parallel to each other,
The wood splitting tool according to claim 1 or 2, wherein the length of the base portion in the vertical direction is determined to be the same as the length of the blade portion in the front-rear direction.