Pole driving tool
The detachable pole driving tool with a cylindrical hammer body and multiple handles provides stable and efficient pole insertion and extraction, addressing the limitations of integrated tools and labor-intensive insertion methods.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-03-31
AI Technical Summary
Existing pole driving tools integrated with handles are limited to a single pole and struggle with efficient insertion into hard ground, especially when long poles are used, requiring unstable postures and heavy labor.
A detachable pole driving tool with a cylindrical steel hammer body, multiple operating handles, a weight member, and a chamfered pole insertion/removal opening, allowing for stable and efficient pole insertion and extraction with enhanced striking energy and convenience.
Facilitates easy, stable, and efficient driving and extraction of poles into the ground, reducing labor intensity and enabling reuse across multiple poles.
Smart Images
Figure 2026055812000001_ABST
Abstract
Description
Technical Field
[0001] [[IDID=5]]The present invention relates to a pole driving tool for driving poles.
Background Art
[0002] In civil engineering work and the like, poles may be installed in the ground or the like and used for various purposes. For example, poles are used as marks (signs) such as the boundary lines or dangerous areas of a construction site, or as marks during surveying work using surveying instruments. For example, at a construction site such as a ground construction site, poles may be installed at regular intervals at the boundary of the area where large heavy equipment operates and passes to take safety measures. In addition, poles are not limited to civil engineering work. For example, when installed along the road as a snow pole, it may be used as a mark indicating the boundary area of the road.
[0003] [[ID=I5]] Many such poles are provided with a pointed tip at the tip side, which makes it easier to drive the pole into the ground or the like. In addition, as poles, long poles with a total length of about 2 m are often used. In addition, in order to enhance visibility and convenience, red-and-white poles that are alternately colored red and white along the height direction are widely known.
[0004] Typically, an operation of driving a pole into the ground or the like is performed by hitting the upper end of the pole using a tool such as a hammer (mallet), but such driving work is heavy labor for workers. In addition, when installing a long pole in the ground, workers may be forced to perform the driving work in an unstable posture.
[0005] Patent Document 1 describes a pole integrally attached with a handle. Such a pole can be pushed and press-fitted into the ground by a worker holding the handle.
Prior Art Documents
Patent Documents
[0006] [Patent Document 1] Japanese Utility Model Publication No. 5-006317 [Overview of the Initiative] [Problems that the invention aims to solve]
[0007] However, since the handle described in Patent Document 1 is integrated with the pole, the handle cannot be used on other poles. Furthermore, in cases where the ground is hard, it may be difficult to efficiently push the pole into the ground even with the handle.
[0008] The technology disclosed herein was developed in view of the above-mentioned problems, and its purpose is to provide a pole driving tool that makes it easier to drive poles into the ground in a stable posture and is also highly convenient. [Means for solving the problem]
[0009] The technology relating to this disclosure is a pole driving tool that is detachable from a pole, A cylindrical steel hammer body having a cylindrical shape, wherein the upper end of the pole can be inserted into and removed from a pole insertion / removal opening formed on the lower end, and a striking part is positioned to strike the pole so as to close the upper end, An operating handle provided on the cylindrical hammer body, It is equipped with.
[0010] Furthermore, the cylindrical hammer body may be provided with a plurality of operating handles.
[0011] Furthermore, at least one of the multiple operating handles may be provided on the lower end side of the cylindrical hammer body.
[0012] Furthermore, a pair of operating handles may be provided on the cylindrical hammer body, and one operating handle and the other operating handle may extend toward opposite sides of the longitudinal axis of the cylindrical hammer body.
[0013] Furthermore, a pair of the aforementioned operating handles may be provided at different heights in the vertical direction of the cylindrical hammer body.
[0014] Furthermore, a weight member may be provided on the upper end and inside of the cylindrical hammer body.
[0015] Furthermore, a chamfered portion is formed at the pole insertion / removal opening, where the inner surface of the cylindrical hammer body is chamfered, and the chamfered portion may have a tapered shape in which the inner cross-sectional area of the cylindrical hammer body gradually widens towards the lower end of the cylindrical hammer body.
[0016] Furthermore, the cylindrical hammer body is provided with a locking portion that can lock onto the pole and is used when pulling the pole out of the ground after it has been driven into the ground. The locking portion may be capable of locking onto the pole when the longitudinal axis of the cylindrical hammer body is inclined with respect to the longitudinal axis of the pole.
[0017] Furthermore, the locking portion may be a notched portion formed by cutting out a part of the cylindrical hammer body, and may be capable of receiving the pole from the side of the cylindrical hammer body. [Effects of the Invention]
[0018] According to the present invention, a pole driving tool can be provided that makes it easy to drive poles into the ground or other surfaces in a stable posture and is also highly convenient. [Brief explanation of the drawing]
[0019] [Figure 1] Figure 1 is a front view of the pole driving tool. [Figure 2] Figure 2 is a view taken along arrow A in Figure 1. [Figure 3] Figure 3 is a view from arrow B in Figure 1. [Figure 4] Figure 4 is a longitudinal cross-sectional view of the pole driving tool. [Figure 5]FIG. 5 is a diagram for explaining a pole. [Figure 6] FIG. 6 is a diagram for explaining a situation where a pole is driven into the ground using a pole driving tool. [Figure 7] FIG. 7 is a diagram for explaining a situation where a pole is driven into the ground using a pole driving tool. [Figure 8] FIG. 8 is a diagram for explaining a situation where a pole is driven into the ground using a pole driving tool. [Figure 9] FIG. 9 is a diagram for explaining a situation where a pole is driven into the ground using a pole driving tool. [Figure 10] FIG. 10 is a front view of a pole driving tool according to a modified example. [Figure 11] FIG. 11 is a diagram for explaining a situation where a pole driven into the ground is pulled out using a locking portion of a pole driving tool according to a modified example.
MODE FOR CARRYING OUT THE INVENTION
[0020] Hereinafter, the pole driving tool according to the present disclosure will be described with reference to the drawings.
[0021] <Embodiment> FIG. 1 is a front view of a pole driving tool 1. FIG. 2 is a view taken in the direction of arrow A in FIG. 1. FIG. 3 is a view taken in the direction of arrow B in FIG. 1. FIG. 4 is a longitudinal sectional view of the pole driving tool 1.
[0022] The pole driving tool 1 is a tool used to drive the pole 10 shown in FIG. 5 into the ground or the like, and is configured to be detachable from the pole 10. The pole 10 includes, for example, a long pole body 11 having a rod shape, an arrowhead portion 12 provided on the lower end side of the pole body 11, an upper end portion 13 formed on the upper end side of the pole body 11, and the like. The material of the pole body 11 is not particularly limited, and it may be made of wood, or may be made of steel, aluminum, or the like.
[0023] Reference numeral 2 denotes the cylindrical hammer body of the pole driving tool 1, and reference numerals 3A and 3B denotes the handle. The cylindrical hammer body 2 is, for example, a cylindrical steel body having a cylindrical shape extending in one direction. Reference numeral 2A denotes the lower end (one end) of the cylindrical hammer body 2, and reference numeral 2B denotes the upper end (other end) of the cylindrical hammer body 2. The lower end 2A side of the cylindrical hammer body 2 is formed as an open end, and this open end forms the pole insertion / removal opening 4. On the other hand, the upper end 2B side of the cylindrical hammer body 2 is a closed end and is closed by a closing plate 5. In the following, the lower end 2A of the pole driving tool 1 (cylindrical hammer body 2) may be referred to as the "tip," and the upper end 2B may be referred to as the "base."
[0024] Reference numeral 6 denotes a side plate of the cylindrical hammer body 2. The side plate 6 has a cylindrical shape. A hollow section 7 is formed inside the cylindrical hammer body 2. The cylindrical hammer body 2 can receive the pole 10 into the hollow section 7 by inserting the upper end 13 side of the pole 10 through the pole insertion / removal opening 4. Conversely, the cylindrical hammer body 2 can pull the upper end 13 side of the pole 10 out of the hollow section 7 through the pole insertion / removal opening 4. The opening diameter of the pole insertion / removal opening 4 and the diameter of the hollow section 7 (inner diameter of the side plate 6) in the cylindrical hammer body 2 are designed to be slightly larger than, for example, the diameter of the pole body 11.
[0025] Reference numeral 8 denotes a weight member provided on the inside of the upper end 2B side of the cylindrical hammer body 2. The weight member 8 may be fixed to the inside (hollow portion 7 side) of the closing plate 5 so as to close the upper end 2B side of the cylindrical hammer body 2. The weight member 8 also serves as a striking part for striking the upper end 13 of the pole 10 (pole body 11) when driving the pole 10 using the pole driving tool 1. In other words, in the illustrated embodiment, the striking part is formed by the weight member 8. The weight member 8 may be, for example, a metal plate, and the weight member 8 may be fixed to the inner surface of the cylindrical hammer body 2 by welding or the like. The weight member 8 may be one or more disc-shaped metal plates.
[0026] The reference numeral X1 in Figure 4 represents the longitudinal axis (central axis) of the cylindrical hammer body 2 (pole driving tool 1). The reference numeral 40 in the enlarged view of section C in Figure 4 represents the chamfered portion provided at the pole insertion / removal opening 4 (on the lower end 2A side of the cylindrical hammer body 2) of the cylindrical hammer body 2. The chamfered portion 40 is formed by chamfering (or thinning) the inner surface 61 of the side plate 6. At the location of the chamfered portion 40, the inner surface 61 of the side plate 6 has a tapered shape, and the inner cross-sectional area of the cylindrical hammer body 2 (i.e., the cross-sectional area of the hollow portion 7) gradually increases (expands in diameter) toward the lower end 2A. Here, "cross-sectional area" refers to the cross-section perpendicular to the longitudinal axis (central axis) X1 of the cylindrical hammer body 2 (pole driving tool 1).
[0027] The pair of operating handles 3A and 3B are gripping members used by workers when driving the pole 10 into the ground using the pole driving tool 1. For example, the operating handles 3A and 3B are made of steel rods, steel pipes, etc., and are located on the side plates 6 of the cylindrical hammer body 2. It may be fixed to the outer surface 62 by welding or the like.
[0028] In this embodiment, as shown in Figures 1 and 4, a pair of operating handles 3A and 3B are provided at different levels in the direction of the longitudinal axis (central axis) X1 (i.e., the height direction) of the cylindrical hammer body 2. In other words, operating handles 3A and 3B are provided at different positions in the direction of the longitudinal axis (central axis) X1 (i.e., the height direction) of the cylindrical hammer body 2. As an example, one operating handle 3A is provided on the lower end 2A side of the cylindrical hammer body 2 (for example, near the lower end 2A), and the other operating handle 3B is provided on the central side of the cylindrical hammer body 2 in the height direction (for example, near the center).
[0029] Furthermore, in the circumferential direction of the cylindrical hammer body 2, one operating handle 3A and the other operating handle 3B extend in different directions. As shown in Figures 1 to 4, one operating handle 3A and the other operating handle 3B extend toward opposite sides of the longitudinal axis (central axis) X1 of the cylindrical hammer body 2. In Figure 3, the reference numeral C1 denotes the central axis (longitudinal axis) of the operating handle 3A, and the reference numeral C2 denotes the central axis (longitudinal axis) of the operating handle 3B.
[0030] Figures 6 to 9 illustrate the process of driving a pole 10 into the ground G using a pole driving tool 1. For example, as shown in Figure 6, the worker first attaches the pole driving tool 1 to the upper end 13 of the pole 10. As shown in Figure 6, at this point, for example, by positioning the pole 10 at an angle to the ground G, it is easy to attach the pole driving tool 1 to a long pole 10 from the upper end 13. The pole driving tool 1 is attached by inserting the pole 10 into the pole insertion / removal port 4 of the cylindrical hammer body 2 from the upper end 13.
[0031] Next, as shown in Figure 7, the pole 10 with the pole driving tool 1 attached is set in a predetermined position for driving into the ground G. For example, the pole 10 is set so that it is approximately perpendicular to the ground G. The symbol X2 shown in Figure 7 is the longitudinal axis (central axis) of the pole 10 (pole body 11). As an example, the pole 10 is set so that the longitudinal axis (central axis) X2 of the pole 10 (pole body 11) is in the vertical direction. Also, since the arrowhead portion 12 of the pole 10 is pointed, at least a part of the arrowhead portion 12 can be easily embedded into the ground G by the weight of the pole 10 with the pole driving tool 1 attached.
[0032] In this state, for example, the innermost part of the hollow section 7 of the pole driving tool 1 (cylindrical hammer body 2) is inserted into the pole driving tool 1 (cylindrical hammer body 2), and the upper end portion 13 of the pole 10 is in contact with the end face Fb of the weight member 8 located on the pole insertion / removal opening 4 side. In this embodiment, the pole 10 is driven into the ground, etc., by the weight member 8 of the cylindrical hammer body 2 striking the upper end portion 13 of the pole 10. Therefore, the weight member 8 of the pole driving tool 1 (cylindrical hammer body 2) also serves as the striking part, and the end face Fb of the weight member 8 can be called the "striking surface".
[0033] From this state, as shown in Figure 8, the worker, for example, grasps the operating handles 3A and 3B with both hands and lifts the pole driving tool 1 (cylindrical hammer body 2) so that the pole 10 (pole body 11) does not completely come out of the pole insertion opening 4, and slides the pole driving tool 1 (cylindrical hammer body 2) upward (in the direction of arrow D) along the pole 10 (pole body 11). Then, from this state, as shown by arrow E, the pole driving tool 1 (cylindrical hammer body 2) is dropped downward, causing the weight member 8, which acts as the striking part, to collide with the upper end 13 of the pole 10 (pole body 11). In this way, the collision energy of the cylindrical hammer body 2 that collides with the upper end 13 of the pole 10 (pole body 11) is used to drive the pole into the ground G. The pole 10 can be driven in efficiently. Then, as shown in Figure 9, the pole 10 is driven into the ground G to a predetermined depth, completing the pole 10 driving operation.
[0034] In this embodiment, the pole driving tool 1 is attached to the pole 10, and the pole 10 can be suitably struck by repeatedly lifting the cylindrical hammer body 2, which is slidable relative to the pole body 11, upward and dropping it downward. The cylindrical hammer body 2 itself functions as a weight for striking the pole 10, but in this embodiment, an additional weight member 8 is provided to the cylindrical hammer body 2, so that the gravitational acceleration when the cylindrical hammer body 2 falls toward the pole 10 increases, and the striking energy that strikes the pole 10 can be increased.
[0035] Furthermore, as described above, the pole driving tool 1 has a chamfered portion 40 formed on the pole insertion / removal opening 4 of the cylindrical hammer body 2. Therefore, when dropping the pole driving tool 1 downwards to drive in the pole 10, the inner surface 61 of the side plate 6 near the pole insertion / removal opening 4 is less likely to collide (interfere with) the pole 10 (pole body 11), thereby preventing scratches or damage to the pole 10 (pole body 11).
[0036] Furthermore, the pole driving tool 1 does not necessarily need to have an additional weight member 8 attached to the cylindrical hammer body 2. This is because the pole 10 can be struck using the weight of the cylindrical hammer body 2. In this embodiment, the sealing plate 5 of the cylindrical hammer body 2 is configured as a striking part that strikes the upper end 13 of the pole 10 (pole body 11), and the inner surface of the sealing plate 5 (the surface facing the hollow part 7) is configured as the striking surface.
[0037] In this embodiment, the pole driving tool 1, when attached to the pole 10, allows the operator to grip the operating handles 3A and 3B, which are positioned lower than the upper end 13 of the pole 10, and perform the pole driving work. This allows the operator to perform the pole driving work in a more stable posture compared to the conventional method of driving a hammer from above the upper end 13 of the pole 10. Furthermore, since the pole driving tool 1 is detachable from the pole 10, after the driving work on one pole 10 is completed, the pole driving tool 1 can be attached to another pole 10 and the driving work can be performed again, offering excellent convenience.
[0038] Furthermore, since the pole driving tool 1 has multiple operating handles 3A and 3B on the cylindrical hammer body 2, for example, the user can firmly grasp the operating handles 3A and 3B with both hands and perform the pole driving work in a stable posture.
[0039] Furthermore, it is preferable that the pole driving tool 1 has at least one of the multiple operating handles 3A, 3B provided on the lower end 2A side of the cylindrical hammer body 2. In the example shown in Figure 1, one of the pair of operating handles 3A, 3B, the operating handle 3A, is provided on the lower end 2A side of the cylindrical hammer body 2. By providing at least one operating handle on the lower end 2A side of the cylindrical hammer body 2 in this way, the worker can drive the pole 10 in a more stable posture.
[0040] Furthermore, the pole driving tool 1 has a pair of operating handles 3A and 3B that extend in opposite directions from each other, sandwiching the longitudinal axis (central axis) X1 of the cylindrical hammer body 2. According to this configuration, when driving a pole 10 using the pole driving tool 1, the worker can easily grasp the pair of operating handles 3A and 3B with both hands, and can perform the driving work in a more stable posture.
[0041] Furthermore, the pole driving tool 1 has a pair of operating handles 3A and 3B attached to the cylindrical hammer body. The handles 3A and 3B are arranged at different heights in the direction of the pole 10. This configuration makes it less likely for the longitudinal axis (central axis) X2 of the pole 10 to shift (tilt) relative to the intended direction (for example, the vertical direction) during the driving operation, compared to the case where the pair of operating handles 3A and 3B are arranged at the same height. More specifically, even if such unstable behavior seems likely to occur, the operator can easily correct the posture of the pole 10 to the intended posture by operating the handles 3A and 3B. This is because, with the operating handles 3A and 3B arranged at different heights, when the operator corrects the posture of the pole 10 while driving it in, a couple is applied to the cylindrical hammer body 2 via the operating handles 3A and 3B, allowing the posture of the pole 10 to be corrected with less force.
[0042] In the configuration shown in Figure 3, the central axis C1 of the operating handle 3A and the central axis C2 of the operating handle 3B are aligned in a straight line. However, this is merely one example of a configuration in which a pair of operating handles 3A and 3B extend toward opposite sides of the longitudinal axis (central axis) X1 of the cylindrical hammer body 2. The angle θ between the central axis C1 of the operating handle 3A and the central axis C2 of the operating handle 3B may or may not be 180°. For example, the angle θ may be designed to be in the range of 120° to 180°. This makes it easier for the operator to grasp the pair of operating handles 3A and 3B with both hands, allowing them to drive the pole 10 in a more stable posture. Furthermore, the central axes C1 and C2 do not necessarily intersect the longitudinal axis (central axis) X1 of the cylindrical hammer body 2.
[0043] The embodiments described above represent only one aspect of the pole driving tool 1 according to this disclosure, and various modifications can be adopted.
[0044] For example, in the pole driving tool 1, the number, position, shape, etc., of the operating handles provided on the cylindrical hammer body 2 are not particularly limited. For example, the cylindrical hammer body 2 may have a single operating handle, or it may have three or more operating handles. Also, the central axis C1 of operating handle 3A and the central axis C2 of operating handle 3B do not have to extend perpendicular to the longitudinal axis (central axis) X1 of the cylindrical hammer body 2. For example, the operating handle 3A (or operating handle 3B) may extend from the cylindrical hammer body 2 so as to be inclined in the height direction of the cylindrical hammer body 2.
[0045] Figure 10 is a front view of a modified pole driving tool 1A. The pole driving tool 1A has a locking part 9 provided on the cylindrical hammer body 2. Other aspects are the same as the pole driving tool 1 described above.
[0046] The locking portion 9 is formed, for example, as a notch cut out of a part of the cylindrical hammer body 2, allowing the pole 10 (pole body 11) to be received from the side of the cylindrical hammer body 2. The locking portion 9 (notch) is used when pulling out the pole 10 that has been driven into the ground G. In other words, the pole driving tool 1A relating to this modification is a driving tool for driving the pole 10 into the ground G, and also functions as a pulling tool for pulling out the pole 10 that has been driven into the ground G. The locking portion 9 (notch) is configured to lock the pole 10 (pole body 11) by receiving at least a part of the cross-section of the pole 10 (pole body 11) that has been driven into the ground G from the side of the cylindrical hammer body 2.
[0047] Figure 11 illustrates the situation in which a pole 10 driven into the ground G is pulled out using the locking portion 9 (notch) of the modified pole driving tool 1A. In Figure 11, the pole 10 driven into the ground G is received from the side of the cylindrical hammer body 2 by the locking portion 9 (notch) of the pole driving tool 1A. Also, as shown in Figure 11, the pole driving tool 1A has the cylindrical hammer body 2 with respect to the longitudinal axis X2 of the pole 10. The structure is configured so that the pole 10 (pole body 11) can be locked into the locking portion 9 (notch) while the longitudinal axis X1 is tilted. The edges 91 and 92 of the notch that form the locking portion 9 are, for example, tilted with respect to the longitudinal axis X1 of the cylindrical hammer body 2. The edges 91 and 92 of the locking portion 9 (notch) extend parallel to each other, for example.
[0048] As shown in Figure 11, the pole 10 (pole body 11) is received into the locking portion 9 (notch) with the longitudinal axis X1 of the cylindrical hammer body 2 inclined with respect to the longitudinal axis X2 of the pole 10. With the lower end 2A (pole insertion / removal opening 4) of the cylindrical hammer body 2 in contact with the ground surface G, the upper end 2B of the cylindrical hammer body 2 is lifted in the direction of arrow F. In other words, the upper end 2B is lifted in the direction in which the pole driving tool 1A (cylindrical hammer body 2) stands upright, using the lower end 2A (pole insertion / removal opening 4) that is in contact with the ground surface G as a fulcrum. This causes an upward pulling force to act on the pole 10 (pole body 11) that is locked in the locking portion 9 (notch) of the cylindrical hammer body 2, allowing the pole 10 (pole body 11) to be pulled out of the ground G.
[0049] By using the lower end 2A of the cylindrical hammer body 2 as the fulcrum, the upper end 2B as the point of effort, and the locking part 9 (notch) as the point of application, the pole 10 can be pulled out of the ground G with less force due to the principle of leverage. [Explanation of Symbols]
[0050] 1. Pole driving tool 2. Cylindrical hammer body 3A, 3B... Operating handles 4. Pole insertion / removal opening 5. Blocking plate 6. Side panels 7...Hollow part 8. Weight component 9. Locking part 10. Paul 11. Pole body
Claims
1. A pole driving tool that can be attached to and detached from a pole, A cylindrical steel hammer body having a cylindrical shape, wherein the upper end of the pole can be inserted into and removed from a pole insertion / removal opening formed on the lower end, and a striking part is positioned to strike the pole so as to close the upper end, An operating handle provided on the cylindrical hammer body, Equipped with, Pole driving tool.
2. The cylindrical hammer body is provided with a plurality of operating handles. The pole driving tool according to claim 1.
3. Of the multiple operating handles, at least one operating handle is provided on the lower end side of the cylindrical hammer body. The pole driving tool according to claim 2.
4. A pair of the aforementioned operating handles are provided on the cylindrical hammer body, One of the operating handles and the other operating handle are positioned so as to be on opposite sides of the longitudinal axis of the cylindrical hammer body. The pole driving tool according to claim 2 or 3.
5. A pair of the aforementioned operating handles are provided at different heights in the vertical direction of the cylindrical hammer body. The pole driving tool according to claim 4.
6. A weight member is provided on the upper end and inside of the cylindrical hammer body. A pole driving tool according to any one of claims 1 to 3.
7. The pole insertion / removal opening has a chamfered portion formed on the inner surface of the cylindrical hammer body, The chamfered portion has a tapered shape in which the inner cross-sectional area of the cylindrical hammer body gradually widens towards the lower end of the cylindrical hammer body. A pole driving tool according to any one of claims 1 to 3.
8. The cylindrical hammer body is provided with a locking portion that can lock onto the pole and is used when pulling the pole out of the ground after it has been driven into the ground. The locking portion is capable of locking the pole when the longitudinal axis of the cylindrical hammer body is inclined with respect to the longitudinal axis of the pole. A pole driving tool according to any one of claims 1 to 3.
9. The locking portion is a notched portion formed by cutting out a part of the cylindrical hammer body. The pole can be received from the side of the cylindrical hammer body. The pole driving tool according to claim 8.
Citation Information
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