Peg hammer and peg hammer component

Abstract

To provide a peg hammer that can obtain sufficient striking force during use while achieving weight saving.SOLUTION: A peg hammer 1 comprises: a hammer head 11 having a bottomed cylindrical head body 111 and a lid body 112 which blocks the other end side opposite to one end side of a bottom wall side in a cylindrical shaft J1 direction of the head body 111; a long handle 12; and a fixing member 13 which fixes one end part in a longer direction of the handle 12 to a side wall of the head body 111. In a cross section orthogonal to the cylindrical shaft J1 direction of a midship part in the cylindrical shaft J1 direction of the head body 111, an area of a side wall part of the head body 111 is smaller than an area of an inside part of the head body 111. Further, the handle 12 has a groove 123 formed therein, and therefore, shapes on both sides thereof with a virtual plane VP1 sandwiched therebetween that passes a center of the handle 12 in the cylindrical shaft J1 direction of the head body 111 and is orthogonal to the cylindrical shaft J1 direction are asymmetrical.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a peg hammer and parts for a peg hammer.

Background Art

[0002] There has been proposed an assembled and storable hammer having an opening formed at one end of a handle, a storage space formed inside the handle body connected to the opening, a first female screw portion formed in the opening, a mounting portion provided at the other end of the handle body and having a mounting hole orthogonal to the longitudinal direction of the handle body, a second female screw portion formed in the mounting hole of the mounting portion, and a male screw portion formed in a striking body. By screwing the male screw portion into the second female screw portion, the striking body is in a use state attached at a right angle to the end of the handle body, and by screwing the male screw portion into the first female screw portion, a part of the striking body is in a storage state stored in the storage space (see, for example, Patent Document 1).

[0003] Also, there has been proposed a hammer including a hammer head provided with a recess on the inside, a plurality of types of weights having different weights that can be inserted into the recess of the hammer head, and a cap detachably engaged with the recess opening of the hammer head (for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, when setting up a tent, tarp, etc. during outdoor leisure activities, etc., it is common to drive a peg into the ground using a hammer. In this case, it is necessary to carry the peg, hammer, etc. for driving the peg into the ground on foot, by bicycle, etc. to the location where the tent, tarp, etc. is to be set up. In this case, when transporting members such as pegs to the location where the tent, tarp, etc. is to be set up, it is required to reduce their weight to lighten the load on the person carrying them. Also, it is required to be able to use the hammer appropriately even in a dark environment such as a campsite at night where the hammer cannot be clearly seen.

[0006] The present invention has been made in view of the above circumstances, and an object thereof is to provide a peg hammer and parts for a peg hammer that can obtain sufficient striking force during use while achieving weight reduction and can be appropriately used even in a dark environment.

Means for Solving the Problems

[0007] To achieve the above object, the peg hammer according to the present invention includes a hammer head having a bottomed cylindrical head body and a lid body that closes the other end side on the opposite side of the one end side on the bottom wall side in the cylinder axis direction of the head body, and a long handle, the lid body can take a first state in which the other end side of the head body is closed and fixed to the head body, and a second state in which the other end side of the head body is opened, in at least a cross section perpendicular to the cylinder axis direction at the central portion of the head body in the cylinder axis direction, the area of the side wall portion of the head body is smaller than the area of the inner portion of the head body, the handle has an asymmetric shape on both sides with respect to a virtual plane passing through the center of the handle in the cylinder axis direction of the head body and perpendicular to the cylinder axis direction.

Effects of the Invention

[0008] According to the present invention, since the head body is bottomed cylindrical and hollow inside, the hammer head is lightweight accordingly, so that the load on the person carrying the peg hammer can be reduced. Then, after filling water, gravel, etc. inside the head body with the lid body in the aforementioned second state, by setting the lid body to the aforementioned first state, it can be used with the weight of the hammer head increased, so that a sufficient striking force can be obtained. In addition, since the orientation of the hammer head can be grasped based on the feel when gripping the handle, it can be used appropriately even in a relatively dark environment.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Modes for Carrying Out the Invention

[0010] (Embodiment 1) Hereinafter, a peg hammer according to an embodiment of the present invention will be described with reference to the drawings. The peg hammer according to the present embodiment includes a hammer head having a bottomed cylindrical head body and a lid body that closes the other end side opposite to one end side on the bottom wall side in the cylinder axis direction of the head body, a long handle, and a fixing member that fixes one end portion in the longitudinal direction of the handle to the side wall of the head body. The lid body can take a first state in which the other end side of the head body is closed and fixed to the head body, and a second state in which the other end side of the head body is opened.

[0011] For example, as shown in FIGS. 1(A) and (B), the peg hammer 1 includes a hammer head 11, a handle 12, and a fixing member 13, and is mainly used for hitting a peg used when setting up a tent into the ground. The hammer head 11 has a head body 111 and a lid body 112. The head body 111 has a bottomed cylindrical shape, and the diameter D1 is set to about 3 cm to 6 cm, for example. As shown in FIG. 2, one end side of the head body 111 on the side opposite to the bottom wall 111a side in the direction of the cylinder axis J1 is closed by the lid body 112. The head body 111 and the lid body 112 are formed of a relatively lightweight metal such as aluminum. Note that the material forming the head body 111 and the lid body 112 may be any material that can obtain the required durability even if the thickness is somewhat thin, and at least one of the head body 111 and the lid body 112 may be formed of a resin such as reinforced plastic. Here, in at least a cross-section orthogonal to the cylinder axis J1 direction at the central portion of the head body 111 in the cylinder axis J1 direction, the area of the side wall portion of the head body 111 is smaller than the area of the inner portion of the head body 111. Further, a protective plate 113 is provided on the hammer head 11 so as to cover the bottom wall 111a of the head body 111. The protective plate 113 is formed of a material having higher strength than the material forming the head body 111, and is formed of a metal such as carbon steel like SS400 or stainless steel. A male screw portion 111c is provided on the side wall 111b at the other end portion of the head body 111 on the side opposite to the bottom wall 111a side in the cylinder axis J1 direction. The lid body 112 has a bottomed cylindrical shape, and a female screw portion 112c that engages with the male screw portion 111c of the head body 111 is provided inside including the end portion on the side opposite to the bottom wall 112a side in the side wall 112b.

[0012] The handle 12 is a long rod-shaped member, and a groove 123 is formed extending from the central portion in the longitudinal direction thereof to the vicinity of the end portion on the side opposite to the hammer head 11 side in the longitudinal direction. The handle 12 is formed of, for example, wood or resin. Due to the formation of the groove 123, the handle 12 has an asymmetric shape on both sides sandwiching a virtual plane VP1 that passes through the center of the handle 12 in the direction of the cylinder axis J1 of the head body 111 and is orthogonal to the cylinder axis J1 direction. That is, the shape of the handle 12 on the +Y direction side and the shape on the -Y direction side with respect to the virtual plane VP1 are asymmetric. Further, a through hole 121a for fixing the fixing member 13 is formed at the other end portion in the longitudinal direction of the handle 12. A through hole 121a for inserting a string, a hook, etc. through the handle 12 is formed at the aforementioned one end portion of the handle 12.

[0013] The fixing member 13 is for fixing one end portion in the longitudinal direction of the handle 12 to the side wall 111b of the head body 111. The fixing member 13 has a fixing member body 131 that is in the shape of a rectangular plate and has a main piece 1311 fixed to the side wall 111b of the head body 111, and two leg pieces 1312 extending in the same direction along the thickness direction of the main piece 1311 from both end portions in the longitudinal direction of the main piece 1311, and a rivet 132 for fixing the fixing member 13 to the handle 12 in a state where the fixing member 13 is inserted through through holes 1312a penetrating each of the two leg pieces 1312 in the thickness direction and a through hole 12a formed at the tip end portion of the handle 12.

[0014] The peg hammer 1 according to this embodiment is carried on foot, by bicycle, etc. to a place where a peg is to be driven into the ground using the peg hammer 1, for example, to set up a tent, tarp, etc. with the inner region S1 of the head main body 111 shown in FIG. 2 emptied. Then, when it is transported to the place where the peg hammer 1 is used, after removing the lid body 112 from the head main body 111 and putting it in a second state where the other end side opposite to the bottom wall 111a side of the head main body 111 is opened, sand, water, etc. at that place are filled into the inner region S1 of the head main body 111. Then, the lid body 112 is fixed to the head main body 111 again to make it into the first state where the other end side is closed with respect to the bottom wall 111a side of the head main body 111. Thereby, the weight of the hammer head 11 can be increased.

[0015] As described above, according to the peg hammer 1 according to this embodiment, since the head main body 111 is a bottomed cylindrical shape and hollow inside, the hammer head 11 is lightened accordingly, so the load on the person carrying the peg hammer 1 can be reduced. And after putting the lid body 112 in the aforementioned second state and filling water, gravel, etc. into the inside of the head main body 111, by making the lid body 112 into the aforementioned first state, it can be used with the weight of the hammer head 11 increased, so sufficient striking force can be obtained.

[0016] Also, the handle 12 of the peg hammer 1 according to this embodiment has the groove 123 formed, so that the shapes on both sides sandwiching the virtual plane VP1 passing through the center of the handle 12 in the direction of the cylinder axis J1 of the head main body 111 and perpendicular to the cylinder axis J1 direction are asymmetric. Thereby, the user of the peg hammer 1 can grasp the orientation of the hammer head 11 of the peg hammer 1 held by the handle 12 based on the feel of the hand when holding the handle 12. Therefore, even in a dark environment where the peg hammer 1 cannot be sufficiently visually recognized, such as at a campsite at night, the work can be carried out without misorienting the hammer head 11.

[0017] (Embodiment 2) The peg hammer according to this embodiment is different from the first embodiment in that the hammer head is formed continuously and integrally with the head body, and the hammer head has a fixing portion to which one end in the longitudinal direction of the long handle is fixed.

[0018] For example, as shown in FIGS. 3(A) and 3(B), the peg hammer 2 according to the present embodiment includes a hammer head 2011 and a handle 2012. The hammer head 2011 has a head body 2111, a lid body 2112, and a fixing portion 2118 for fixing the handle 2012 to the head body 2111. The head body 2111 is in the shape of a bottomed cylinder, and as shown in FIG. 4, the other end side opposite to the one end side on the bottom wall 2111a side in the cylinder axis J2 direction is closed by the lid body 2112. The head body 2111 and the lid body 2112 are formed of a relatively lightweight metal such as aluminum. Here, in at least a cross-section perpendicular to the cylinder axis J2 direction at the central portion of the head body 2111 in the cylinder axis J2 direction, the area of the side wall portion of the head body 2111 is smaller than the area of the inner portion of the head body 2111. Specifically, at least at the central portion of the head body 2111 in the cylinder axis J2 direction, the ratio of the thickness of the side wall of the head body 2111 to the diameter of the hollow portion inside the head body 2111 is set to be about 1 / 10. Also, the thickness of the bottom wall 2111a of the head body 2111 is thicker than the thickness of the side wall 2111b of the head body 2111. A male screw portion 2111c is provided on the side wall 2111b at the other end portion of the head body 2111 on the side opposite to the bottom wall 2111a side in the cylinder axis J2 direction. The lid body 2112 is in the shape of a bottomed cylinder, and a female screw portion 2112c that engages with the male screw portion 2111c of the head body 2111 is provided inside including the end portion on the side opposite to the bottom wall 2112a side in the side wall 2112b. Here, the number of turns of the male screw portion 2111c is set to be about 1.5. In the present embodiment, an example where the number of turns of the male screw portion 2111c is about 1.5 is described, but the number of turns of the male screw portion 2111c is not limited to about 1.5 turns and may be 3 or less. Thereby, after filling water, gravel, etc. inside the head body 2111, the lid body 2112 can be attached to the head body 2111 only by rotating the lid body 2112 about 1.5 turns. Therefore, for example, when setting up a tent, the peg hammer 2 can be prepared easily and quickly.

[0019] The fixing portion 2118 is formed continuously and integrally with the head main body 2111 and is for fixing one end portion in the longitudinal direction of the handle 2012 to the side wall 2111b of the head main body 2111. The fixing portion 2118 has a cylindrical main portion 2118a whose one end portion in the cylindrical axis direction is continuous with the side wall 2111b of the head main body 2111, and two fins 2118b which are plate-shaped and extend from one end portion on the head main body 2111 side in the cylindrical axis direction of the main portion 2118a to both sides along the cylindrical axis direction of the head main body 2111 and are continuous with the side wall 2111b of the head main body 2111. The main portion 2118a has a shape in which the diameter increases as it moves away from the head main body 2111. Further, the cross-sectional shape inside the main portion 2118a has a flat shape in which the length in the direction orthogonal to the cylindrical axis direction of the head main body 2111 is shorter than the length in the cylindrical axis direction of the head main body 2111. Further, a through hole 2118c that penetrates the side wall in the thickness direction is formed at the end portion of the main portion 2118a on the side opposite to the head main body 2111 side.

[0020] The handle 2012 has a long rod-shaped main portion 2121, and a tip portion 2122 that extends along the longitudinal direction of the main portion 2121 from one end portion in the longitudinal direction of the main portion 2121 and is fitted inside the fixing portion 2118 of the hammer head 2011. And a groove 2123 is formed in the main portion 2121 that extends from the central portion in its longitudinal direction to the end portion on the side opposite to the hammer head 2011 side in its longitudinal direction. And due to the formation of the groove 2123 in the handle 2012, the shapes on both sides sandwiching a virtual plane VP2 that passes through the center of the handle 2012 in the direction of the cylinder axis J2 of the head body 2111 and is orthogonal to the cylinder axis J2 direction are asymmetric. That is, the handle 2012 has an asymmetric shape between the shape on the +Y direction side and the shape on the -Y direction side with respect to the virtual plane VP2. Also, the handle 2012 is formed of, for example, wood. As the wood, oak wood, which is relatively inexpensive, has excellent durability, has beautiful grain, and has been used for furniture, building materials, etc. in the Nordic region since ancient times, may be adopted. Note that as the handle 2012, for example, a rubber grip with a finger channel formed in a metal pipe-shaped member may be adopted. Also, due to the formation of the groove 2123 in the handle 2012, for example, when performing a so-called peg fixing operation using the peg hammer 2 in a relatively dark environment without lighting like a campsite at night, the direction of the hammer head 2011 can be grasped based on the feeling when gripping the handle 2012 provided with the groove 2123. The tip portion 2122 has a so-called tapered shape that tapers toward the tip side. The tip portion 2122 has a flat shape in which the length in the direction orthogonal to the longitudinal direction of the cross section is shorter than the length in one direction orthogonal to the longitudinal direction, and in a state where it is fitted inside the fixing portion 2118, the handle 2012 is prevented from rotating around the axis along the longitudinal direction of the handle 2012 with respect to the hammer head 2011. Also, a screw hole (not shown) for fixing the fixing portion 2118 of the hammer head 2011 is formed in the tip portion 2122 of the handle 2012.Then, with the tip 2122 of the handle 2012 inserted into the fixing part 2118, two wood screws (not shown) are screwed in while being inserted through the two through holes 2118c of the fixing part 2118 into the screw holes formed in the tip 2122 of the handle 2012, thereby fixing the handle 2012 to the hammer head 2011. In this way, since the hammer head 2011 is fixed to the handle 2012 by wood screws, it becomes easy to replace the handle 2012, and accordingly, it is expected to improve the usability of the user. Further, a through hole 2121a for inserting a string, a hook, etc. is formed at the other end of the handle 2012 on the side opposite to the hammer head 2011 side in the longitudinal direction of the handle 2012.

[0021] As described above, according to the peg hammer 2 according to the present embodiment, the hammer head 2011 is formed continuously and integrally with the head main body 2111, and has a fixing part 2118 to which the end of the handle 2012 is fixed. Thereby, rattling of the hammer head 2011 with respect to the handle 2012 can be suppressed in a state where the hammer head 2011 is fixed to the tip 2122 of the handle 2012.

[0022] (Embodiment 3) The peg hammer according to the present embodiment is different from the first embodiment in that the head main body of the hammer head is square tube-shaped.

[0023] For example, as shown in FIGS. 5(A) and 5(B), the peg hammer 5 according to the present embodiment includes a hammer head 5011 and a handle 5012. The hammer head 5011 has a head main body 5111, a lid body 5112, a protection plate 5113, and a hook 5114. The head main body 5111 has a bottomed rectangular tube shape, and the other end side in the -Y direction side, which is the side opposite to the one end side on the bottom wall side in the direction of the tube axis J5, is closed by the lid body 5112. The head main body 5111 and the lid body 5112 are formed of a relatively lightweight metal such as aluminum or resin. Here, in at least a cross section orthogonal to the tube axis J5 direction at the central portion in the tube axis J5 direction of the head main body 5111, the area of the side wall portion of the head main body 5111 is smaller than the area of the inner portion of the head main body 5111. Further, two through holes (not shown) are provided in the upper side wall in FIG. 5(A) of the other end portion on the side opposite to the bottom wall side in the tube axis J5 direction of the head main body 5111, and one through hole (not shown) is provided in the lower side wall.

[0024] The lid body 5112 has a rectangular tube-shaped cylindrical portion 51123 and a main piece 51124 that is substantially rectangular plate-shaped, closes one end of the cylindrical portion 51123 in the axial direction of the cylinder, and has a peripheral portion that projects from one end of the cylindrical portion 51123 in a direction away from the cylinder axis of the cylindrical portion 51123. Further, two protrusions 51121 are provided protruding on the upper outer wall of the cylindrical portion 51123 shown in FIG. 7. Furthermore, a plunger 51122 that holds a pin 51122a biased in a protruding direction by a biasing member (not shown) is fixed to the side wall of the cylindrical portion 51123 on the -Z direction side shown in FIG. 7. Then, as shown in FIG. 5(B), in a state where the lid body 5112 is attached to the head body 5111 so as to close the other end on the -Y direction side of the head body 5111, the two protrusions 51121 are inserted into two through holes provided in the side wall on the +Z direction side of the head body 5111, and the pin 51122a of the plunger 51122 is fitted into a through hole provided in the side wall on the -Z direction side of the head body 5111. Here, as shown in FIG. 7, with the protrusion 51121 of the lid body 5112 inserted into the through hole on the +Z direction side of the head body 5111, when the end on the -Z direction side of the lid body 5112 is brought close to the end of the head body 5111 and the pin 51122a of the plunger 51122 is pressed against the end of the head body 5111 and then pushed in as it is, after the pin 51122a is once submerged, it protrudes again at a position facing the through hole of the head body 5111 and is fitted into the through hole to be in the state shown in FIG. 5(B). In this way, after filling the inside of the head body 5111 with gravel or the like, with the protrusion 51121 of the lid body 5112 inserted into the two through holes on the +Z direction side of the head body 5111, by simply bringing the end on the -Z direction side of the lid body 5112 into contact with the end of the head body 5111 and then pushing it in, the head body 5111 can be closed with the lid body 5112. Therefore, for example, when setting up a tent, the peg hammer 5 can be prepared easily and quickly. The protection plate 5113 is formed of a material having higher strength than the material forming the head body 5111, and is formed of a metal such as stainless steel, for example, as in the first embodiment.

[0025] The hook 5114 is fixed to the surface of the main piece 51124 of the lid body 5112 on the side opposite to the cylindrical portion 51123 side.

[0026] The fixing member 5013 is for fixing one end portion of the handle 5012 in the longitudinal direction to the side wall of the head main body 5111. The fixing member 5013 includes a fixing member main body 5131 having a square tube-shaped main portion 51311 and two tongue pieces 51312 protruding from one end portion of the main portion 51311 in the tube axis direction of the main portion 51311 to both sides along the tube axis J5 direction of the head main body 5111, and rivets 5132 and 5133. As shown in FIG. 6(A), a through hole 51311a is provided through the main portion 51311. Here, the through hole 51311a is provided through each of two positions in the main portion 51311 that face each other in the tube axis J5 direction of the head main body 5111. Further, as shown in FIG. 6(B), a through hole 5132a penetrating in the thickness direction is provided through each of the two tongue pieces 51312. Returning to FIGS. 5(A) and (B), the rivet 5132 fixes the fixing member 5013 to the handle 12 in a state of being inserted through each of two through holes (not shown) provided through the side walls of the main portion 51311 that face each other in the tube axis J5 direction of the head main body 5111. The rivet 5133 fixes the fixing member 5013 to the head main body 5111 in a state of being inserted through the through hole 51312a provided through the tongue piece 51312 of the fixing member main body 5131.

[0027] The handle 5012 has a long rod-shaped handle body 5121 and a gripping portion 5122 attached to one end of the handle body 5121 in the longitudinal direction. The handle body 5121 is formed of, for example, wood, and the gripping portion 5122 is formed of an elastic material such as rubber or elastomer. The other end of the handle body 5121 in the longitudinal direction is fitted inside the fixing member body 5131 of the fixing member 5013. The gripping portion 5122 has an asymmetric shape on both sides sandwiching a virtual plane VP5 that passes through the center of the handle body 5121 in the direction of the cylinder axis J5 of the head body 5111 and is orthogonal to the cylinder axis J5 direction. Specifically, in FIG. 5(B), on the +Y direction side of the gripping portion 5122 with respect to the virtual plane VP5, protruding portions 5122a and 5122b that protrude toward the +Y direction are formed at two positions slightly on the +Z direction side from the -Z direction side end portion and the central portion of the gripping portion 5122. Further, in FIG. 5(B), on the -Y direction side of the gripping portion 5122 with respect to the virtual plane VP5, a protruding portion 5122c that protrudes toward the -Y direction from the +Z direction side end portion of the gripping portion 5122, and a curved portion 5122d that is gently curved convexly toward the -Y direction from a portion adjacent to the protruding portion 5122c in the -Z direction side of the gripping portion 5122 to the -Z direction side end portion are formed.

[0028] As described above, according to the peg hammer 5 according to the present embodiment, the gripping portion 5122 of the handle 5012 has an asymmetric shape on both sides sandwiching a virtual plane VP5 that passes through the center of the handle body 5121 in the direction of the cylinder axis J5 of the head body 5111 and is orthogonal to the cylinder axis J5 direction. Thereby, when the user performs a so-called peg fixing operation using the peg hammer 5 in a relatively dark environment without illumination such as a campsite at night, the user can grasp the orientation of the hammer head 5011 based on the feeling when gripping the gripping portion 5122. Thereby, it is possible to prevent the user from accidentally hitting the lid body 5112 side opposite to the protective plate 5113 side of the hammer head 5011 against the peg and damaging the lid body 5112.

[0029] In addition, since the head body 5111 of the hammer head 5011 according to the present embodiment has a bottomed rectangular tube shape, the side wall on the +Z direction side of the hammer head 5011 can be brought into contact with a flat ground surface, and the peg hammer 5 can be temporarily placed in the work space with the handle 5012 extending vertically upward from the hammer head 5011. Therefore, when the operator repeats the work using the peg hammer 5 and other work, the operator can quickly grasp the handle 5012 of the peg hammer 5, so that the work efficiency can be improved.

[0030] As described above, each embodiment of the present invention has been described, but the present invention is not limited to the configuration of the above-described embodiments. For example, as in the peg hammer 3 shown in Fig. 8(A), in the hammer head 3011, the lid body 3112 may be attached to the head body 3111 via a hinge 3114 so as to be openable and closable. In Figs. 8(A) and (B), the same components as those in the embodiment are denoted by the same reference numerals as those in Figs. 1(A) and (B). In this case, the hammer head 3011 includes a hook-type clamp 3116 provided on the side opposite to the hinge 3114 side across the cylindrical axis J1 at the end of the head body 3111 on the lid body 3112 side, an engaging portion 3115 provided on the side opposite to the hinge 3114 side across the cylindrical axis J1 in the lid body 3112 and engaging with the hook-type clamp 3116, and a sealing member 3117 interposed between the head body 3111 and the lid body 3112 and sealing the inner region of the head body 3111. Here, the hook-type clamp 3116 includes a support portion 3116b that rotatably supports a lever 3116a, and an annular hook 3116c rotatably attached to the lever 3116a in the vicinity of the central portion in the longitudinal direction of the lever 3116a. Further, the sealing member 3117 may be formed in an annular shape from, for example, rubber and provided over the entire circumference at the end of the head body 3111 on the lid body 3112 side.

[0031] In the peg hammer 3 according to this modification, when the hook 3116c is engaged with the engaging portion 3115 provided on the lid body 3112, as shown by the arrow AR21 in FIG. 8(B), the lever 3116a is pivoted about the support portion 3116b as a fulcrum, so that the hook 3116c is disengaged from the engaging portion 3115. Then, the lid body 3112 is pivoted about the hinge 3114 as a fulcrum to be opened.

[0032] This configuration also has the same operational effects as those of the embodiment.

[0033] In the second embodiment, for example, as shown in FIGS. 9(A) and (B), the handle 4012 may have the protrusion 4121b. In FIGS. 9(A) and (B), the same components as those in the second embodiment are denoted by the same reference numerals as those in FIGS. 3(A) and (B). The handle 4012 has a shape that is recessed in a direction in which both sides of the protrusion 4121b in its longitudinal direction approach the central axis along the longitudinal direction, and is curved so that the side opposite to the protrusion 4121b side in its short direction protrudes in a direction away from the central axis. According to this configuration, when the user uses the peg hammer in a relatively dark environment, the user can grasp the orientation of the hammer head 2011 based on the position of the protrusion 4121b. Thereby, it is possible to prevent the user from accidentally hitting the lid body 2112 side of the hammer head 2011 against the peg and damaging the lid body 2112.

[0034] In the third embodiment, for example, like the peg hammer 6 shown in FIGS. 10(A) and (B), a fluorescent plate 6115 coated with a fluorescent paint may be provided on the lid body 5112 of the hammer head 6011. In FIGS. 10(A) and (B), the same components as those in the third embodiment are denoted by the same reference numerals as those in FIGS. 5(A) and (B). Here, as the fluorescent paint, for example, a fluorescent material containing tritium can be adopted. Further, a hook 6015 may be provided at an end portion of the handle 5012 on the side opposite to the hammer head 6011 side.

[0035] According to this configuration, when the user uses the peg hammer 6 in a relatively dark environment, the user can grasp the orientation of the hammer head 6011 based on the position of the fluorescent plate 6115.

[0036] In each embodiment, the fixing member 13 may have a clamp (not shown) that detachably holds the tip of the handle 12. Further, for the handle 12, for example, it may be made by so-called bushcraft using wood that can be procured at the place where the user uses the peg hammer 1.

[0037] In Embodiment 1, without providing the protection plate 14, the thickness of the bottom wall 111a of the head body 111 may be made at least thicker than the thickness of the side wall of the head body 111, and may have sufficient strength so as not to deform even when an ordinary user strikes the bottom wall 111a against a peg.

[0038] In each embodiment, an example in which the head bodies 111 and 2111 and the lid bodies 112 and 2112 are each bottomed cylindrical has been described, but the present invention is not limited to this, and the head body and the lid body may each have other bottomed cylindrical shapes such as bottomed polygonal cylindrical shapes.

[0039] As described above, the embodiments and modification examples of the present invention have been described, but the present invention is not limited to these. The present invention includes those in which the embodiments and modification examples are appropriately combined, and those in which appropriate changes are made thereto.

Industrial Applicability

[0040] The present invention is suitable as a hammer for driving pegs and pegs into the ground up to the place where a tent, tarp, etc. are set up.

Explanation of Reference Numerals

[0041] 1, 2, 3, 5, 6: Peg hammer, 11, 2011, 3011, 5011, 6011: Hammer head, 12, 2012, 4012: Handle, 12a, 121a, 1312a, 2121a, 51311a, 51312a: Through hole, 13, 5013: Fixed member, 111, 2111, 3111, 5111, 6111: Head body, 111a, 112a, 2111a, 2112a: Bottom wall, 111b, 112b, 2111b, 2112b: Side wall, 111c, 2111c: Male screw part, 112, 2112, 3112, 5112: Cover body, 112c, 2112c: Female screw part, 113, 5113: Protection plate, 131, 5131: Fixed member body, 132, 5132, 5134: Rivet, 123, 2123: Groove, 1311, 51124: Main piece, 1312: Leg piece, 2118: Fixed part, 2118a, 51311: Main part, 2118b: Fin, 2122: Tip part, 3114: Hinge, 3115: Engaging part, 3116: Hook-type clamp, 3116a: Lever, 3116b: Support part, 3116c, 5114, 6015: Hook, 4121b, 51121: Protrusion, 5121: Handle body, 5122: Gripping part, 5122a, 5122b, 5122c: Protruding part, 5122d: Curved part, 6115: Fluorescent plate, 51122: Plunger, 51122a: Pin, 51123: Cylindrical part, 51312: Tongue piece, S1: Region, J1: Cylindrical axis, VP1, VP2, VP5: Virtual plane

Claims

1. A hammer head having a bottomed cylindrical head body and a lid that closes the other end side of the head body on the opposite side of the one end side on the bottom wall side in the cylinder axis direction of the head body, and a long handle, wherein the lid can take a first state in which the other end side of the head body is closed and fixed to the head body, and a second state in which the other end side of the head body is opened, in a cross section orthogonal to the cylinder axis direction of at least the central portion of the head body in the cylinder axis direction, the area of the side wall portion of the head body is smaller than the area of the inner portion of the head body, the handle has an asymmetric shape on both sides across a virtual plane passing through the center of the handle in the cylinder axis direction of the head body and orthogonal to the cylinder axis direction, a peg hammer.

2. A fluorescent plate is provided on a portion of the lid that is exposed outside the hammer head. The peg hammer according to claim 1.

3. The head body is a bottomed cylindrical shape, and a male screw portion is provided on the side wall of the other end portion on the opposite side of the one end portion on the bottom wall side in the cylinder axis direction of the head body, the lid is a bottomed cylindrical shape, and a female screw portion that engages with the male screw portion is provided inside the side wall, the number of turns of the male screw portion is 3 or less, The peg hammer according to claim 1 or 2.

4. The bottom wall of the head body is covered with a protective plate formed of metal. The peg hammer according to claim 1 or 2.

5. The peg hammer further includes a fixing member that fixes one end portion in the longitudinal direction of the handle to the side wall of the head body. The peg hammer according to claim 1 or 2.

6. The hammer head is formed continuously and integrally with the head body, and has a fixing portion to which one end portion in the longitudinal direction of the handle is fixed. The peg hammer according to claim 1 or 2.

7. A hammer head having a bottomed cylindrical head body and a lid that closes the other end side of the head body on the opposite side of the one end side on the bottom wall side in the cylinder axis direction of the head body, wherein the lid can take a first state in which the other end side of the head body is closed and fixed to the head body, and a second state in which the other end side of the head body is opened, in a cross section orthogonal to the cylinder axis direction of at least the central portion of the head body in the cylinder axis direction, the area of the side wall portion of the head body is smaller than the area of the inner portion of the head body, A fluorescent plate is provided on a portion of the outside of the hammer head of the lid that is exposed. Parts for a peg hammer.

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