Driving tool

Abstract

To provide a driving tool which can stabilize a machine regardless of a direction in which a contact part is placed in contact with a driven material when a nail is obliquely driven.SOLUTION: A driving tool 10 ejects a fastener from an ejection port 33b formed at a tip of a nose part 17 and includes a contact part 30 at the tip of the nose part 17. The contact part 30 includes a plurality of claw parts 36a which are disposed so as to enclose the ejection port 33b. When a tip of the contact part 30 is placed in contact with a flat driving surface 40 so that a center axis of the ejection port 33b is set at 45 degrees relative to the driving surface 40, the at least three claw parts 36a come into contact with the driving surface 40.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a driving tool for driving fasteners such as nails and pins into a workpiece, and more particularly to a driving tool having a structure advantageous for driving fasteners obliquely. [Background technology]

[0002] When using this type of nailing tool, there are cases where the nail needs to be driven at an angle (oblique driving) into the material being driven into, for example, when driving nails into a corner of a wall, etc. When driving at an angle like this, the contact area between the material being driven and the tip of the tool is narrow, making it easier for the tip of the tool to slip on the surface of the material being driven into.

[0003] To solve these problems, a driving tool is known that has a spike for oblique driving at the tip of the contact part that comes into contact with the workpiece (see, for example, Patent Document 1). With such conventional driving tools, the tip of the tool is positioned by piercing the spike into the workpiece during oblique driving. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6604067 Summary of the Invention [Problem to be solved by the invention]

[0005]

[0006]

[0007] Conventional driving tools are equipped with spikes to prevent misalignment when driving at an angle, but depending on the direction of the contact part, the spikes may not catch properly, which can result in insufficient effectiveness in preventing misalignment when driving.

[0008] Therefore, an object of the present invention is to provide a driving tool that can stabilize the machine when performing oblique driving work regardless of the direction in which the contact part is applied. [Means for solving the problem]

[0009]

[0010] In order to solve the above-mentioned problems, the present invention provides a driving tool that injects a fastener from an injection port formed at the tip of a nose portion, and is provided with a contact portion at the tip of the nose portion, and the contact portion has a cylindrical portion that forms the injection port, and the cylindrical portion has a plurality of claw portions arranged to surround the injection port, and a circular, blade-like protrusion with a sharp tip provided at the tip of the cylindrical portion, and the claw portions are arranged on the outer periphery of the protrusions, and are configured so that the claw portions abut against the driving surface when the tip of the contact portion is abutted against the driving surface so that the central axis of the injection port is at 45 degrees to the driving surface. [Effects of the Invention]

[0011]

[0012] The present invention is as described above, and includes a cylindrical portion forming an injection port, the cylindrical portion having a plurality of claws arranged to surround the injection port, and annular, sharp-edged protrusions provided at the tip of the cylindrical portion, the claws being arranged on the outer periphery of the protrusions and configured to abut against the flat driving surface when the tip of the contact portion is abutted against the driving surface so that the central axis of the injection port is at 45 degrees relative to the driving surface. With this configuration, the annular protrusions can suppress slippage in a direction different from that of the claws at positions away from the claws, thereby stabilizing the posture of the machine through a synergistic effect with the claws. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. [Figure 2]FIG. 2 is a perspective view of a nose portion according to the first embodiment. [Figure 3] 1A is a side view of a nose portion according to a first embodiment, FIG. 1B is a bottom view, FIG. 1C is a cross-sectional view taken along line A1-A1 shown in FIG. 1B, and FIG. 1D is an enlarged view of part B1 shown in FIG. [Figure 4] FIG. 2 is a perspective view of the nose portion according to the first embodiment, showing a state in which the contact portion is rotated. [Figure 5] FIG. 10 is a perspective view of a nose portion according to a first modified example of the first embodiment. [Figure 6] 1A is a side view of a nose portion according to a first modified example of the first embodiment, FIG. 1B is a bottom view, FIG. 1C is a cross-sectional view taken along line A2-A2 shown in FIG. 1B, and FIG. 1D is an enlarged view of part B2 shown in FIG. 1C. [Figure 7] FIG. 10 is a perspective view of a nose portion according to a second modified example of the first embodiment. [Figure 8] 10A is a side view of a nose portion according to a second modified example of the first embodiment, FIG. 10B is a bottom view, FIG. 10C is a cross-sectional view taken along line A3-A3 shown in FIG. 10B, and FIG. 10D is an enlarged view of part B3 shown in FIG. [Figure 9] FIG. 10 is a perspective view of a nose portion according to a second embodiment. [Figure 10] 10A is a side view of a nose portion according to a second embodiment, FIG. 10B is a bottom view, FIG. 10C is a cross-sectional view taken along line A4-A4 in FIG. 10B, and FIG. 10D is an enlarged view of part B4 in FIG. [Figure 11] 10A, 10B, and 10C are a front view, a side view, and a perspective view, respectively, showing a state in which three claw portions according to a second embodiment have been stuck in the device. [Figure 12] 10A, 10B, and 10C are a front view, a side view, and a perspective view, respectively, showing a state in which four claw portions according to a second embodiment have been stuck in the device. [Figure 13] FIG. 10 is a perspective view of a nose portion according to a first modified example of the second embodiment. [Figure 14] 10A is a side view of a nose portion according to a first modified example of the second embodiment, FIG. 10B is a bottom view, FIG. 10C is a cross-sectional view taken along the line A5-A5 shown in FIG. 10B, and FIG. 10D is an enlarged view of a portion B5 shown in FIG. [Figure 15] FIG. 10 is a perspective view of a nose portion according to a second modification of the second embodiment. [Figure 16] 6A is a side view of a nose portion according to a second modification of the second embodiment, FIG. 6B is a bottom view, FIG. 6C is a cross-sectional view taken along line A6-A6 shown in FIG. 6B, and FIG. 6D is an enlarged view of part B6 shown in FIG. 6C. [Figure 17] FIG. 10 is a perspective view of a nose portion according to a third modified example of the second embodiment. [Figure 18] 10(a) is a side view of a nose portion according to a third modified example of the second embodiment, and FIG. 10(b) is an enlarged view of a portion B7 shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] (First embodiment) The driving tool 10 according to this embodiment injects a fastener from an injection port 33 b formed at the tip of the nose portion 17 .

[0015] The structure of the driving tool 10 is well known and will not be described in detail, but it is powered by, for example, compressed air, gas, or electricity, and is configured as shown in Figure 1. The driving tool 10 shown in Figure 1 has a rod-shaped grip 11 for an operator to hold. A trigger 12 that can be pulled is located at a position where the operator's index finger will rest when gripping the grip 11. When the trigger 12 is pulled, an internal drive mechanism (such as a piston-cylinder mechanism or a spring mechanism) is activated, and the fastener is driven.

[0016] An output section 16 is connected to the upper end of the grip 11 so as to be approximately perpendicular to the grip 11. A nose section 17 is formed to protrude from the tip of the output section 16. The nose section 17 is fixed to the tip of the output section 16. A fastener guide path is formed inside the nose section 17, and the exit of the fastener guide path is the ejection port 33b. A drive mechanism is built into the output section 16, and when the drive mechanism is activated, the fastener is ejected from the nose section 17. More specifically, a driver for ejecting the fastener is guided inside the output section 16 so as to be slidable toward the nose section 17. When the drive mechanism is activated, the driver impulsively slides toward the nose section 17, and the fastener waiting in the guide path of the nose section 17 is ejected by the tip of the driver.

[0017] In addition, a magazine 14 containing connecting fasteners is connected to the rear of the nose portion 17, and the fasteners in the magazine 14 are sequentially supplied into the guide path of the nose portion 17 by a fastener supply mechanism not shown.

[0018] A contact nose 20 is slidably mounted on the tip of the nose portion 17 according to this embodiment. This contact nose 20 is connected to a contact arm that is reciprocally movable relative to the output portion 16, and moves integrally with the contact arm. In its natural state, the contact nose 20 is biased to protrude toward the tip, preventing fastener driving in this state. On the other hand, when the tip of the contact nose 20 is pressed against the workpiece, the contact arm moves together with the contact nose 20, disengaging the safety mechanism and enabling fastener driving.

[0019] As shown in FIG. 2, the contact nose 20 according to this embodiment includes a main body portion 21 and a contact portion 30.

[0020] The main body 21 is a member connected to the tool main body, and in this embodiment, is connected to the contact arm. However, this main body 21 does not necessarily have to be connected to the contact arm. For example, the main body 21 may be fixed to the tip of the output part 16 (nose part 17) so that it cannot move. Alternatively, the main body 21 may be formed integrally with the nose part 17. Alternatively, the main body 21 may be formed integrally with the tip of the contact arm.

[0021] 3(c), the main body 21 according to this embodiment includes a cylindrical portion 21b for mounting the contact portion 30. A ring holding groove 21a is formed around the inner peripheral surface of the cylindrical portion 21b. An O-ring 22 is inserted in a compressed state into the ring holding groove 21a.

[0022] The contact portion 30 is the portion that comes into contact with the workpiece when the fastener is driven. The contact portion 30 according to this embodiment is rotatably attached to the main body 21, and is thereby rotatable about the central axis X of the injection port 33b, as shown in Figures 2 and 4. If the contact portion 30 is not rotatable, the contact portion 30 may be fixed to the main body 21, or may be formed integrally with the main body 21.

[0023] As shown in FIG. 3(c), the contact portion 30 includes an insertion portion 31 that is inserted into the main body portion 21, and a cylindrical portion 33 that protrudes toward the tip of the main body portion 21.

[0024] The insertion portion 31 is cylindrical and matches the inner diameter of the main body 21, with an engagement groove 31a formed on its outer circumferential surface. This engagement groove 31a is a shallow groove that engages with the O-ring 22. When the insertion portion 31 is inserted into the main body 21 until it abuts against the flange 32, the O-ring 22 engages with the engagement groove 31a, as shown in FIG. 3(c), preventing the contact portion 30 from easily falling out of the main body 21. However, the contact portion 30 can be removed from the main body 21 by applying enough force to elastically deform the O-ring 22 and pulling it out. Furthermore, by connecting the contact portion 30 and the main body 21 using the O-ring 22 in this manner, the contact portion 30 is rotatable relative to the main body 21 in the circumferential direction of the O-ring 22.

[0025] The tubular portion 33 is a cylindrical portion as shown in Figure 3(c) and protrudes toward the tip of the main body portion 21. An injection path 33a for guiding a fastener is formed in the hollow portion of the tubular portion 33. This injection path 33a communicates with the inside of the nose portion 17 and forms part of the fastener guide path described above. An injection port 33b for injecting the fastener opens at the end of the injection path 33a.

[0026] As shown in Figure 3(d), the cylindrical portion 33 according to this embodiment has a tapered portion 34 formed on the outer peripheral surface of the tip portion that forms the injection port 33b. This tapered portion 34 is formed so that the outer diameter gradually decreases toward the tip. By providing this tapered portion 34, the injection port 33b can be brought as close as possible to the driving surface when driving a nail obliquely. By bringing the injection port 33b closer to the driving surface, the nail can be driven deeper, which reduces the lift of the nail when driving a nail obliquely.

[0027] The tapered portion 34 is provided with a thin-walled portion 34a that is thinner than the other portions (non-thin-walled portions 34b) in the circumferential direction. The thin-walled portion 34a is formed by cutting out the outer peripheral surface of the tip of the cylindrical portion 33 and is formed so as not to protrude from the outer shape of the cylindrical portion 33. The surface of the thin-walled portion 34a according to this embodiment is flat. The surface of the thin-walled portion 34a according to this embodiment is inclined at an angle different from that of the non-thin-walled portion 34b. As shown in FIG. 3(c), the angle of the surface of the thin-walled portion 34a is closer to parallel to the central axis X of the injection port 33b than the angle of the surface of the non-thin-walled portion 34b. The tip surface 35 of the cylindrical portion 33 at the thin-walled portion 34a is formed thinner than the tip surface 35 of the cylindrical portion 33 at the non-thin-walled portion 34b.

[0028] With this configuration, by bringing the thin portion 34a into contact with the driving surface during oblique driving, the injection port 33b can be brought closer to the driving surface than when the non-thin portion 34b is brought into contact with the driving surface.

[0029] When the contact portion 30 is brought into contact with the driving surface at an angle for oblique driving, the non-thin portion 34b may come into contact with the driving surface instead of the thin portion 34a, depending on how the contact portion 30 is brought into contact. In such a case, the contact portion 30 can be rotated as shown in Figure 4 to adjust the thin portion 34a to come into contact with the driving surface.

[0030] In this embodiment, as shown in FIG. 3(b), the thin-walled portions 34a and the non-thin-walled portions 34b are alternately arranged, and the plurality of thin-walled portions 34a are provided at equal intervals in the circumferential direction of the cylindrical portion 33. Specifically, three thin-walled portions 34a are provided at equal intervals in the circumferential direction of the cylindrical portion 33, i.e., they are arranged at 120-degree intervals. This configuration makes it easier to bring the thin-walled portions 34a into contact with the driving surface. Furthermore, even if the thin-walled portions 34a do not come into contact with the driving surface, the thin-walled portions 34a can be brought into contact with the driving surface by slightly rotating the contact portion 30.

[0031] As shown in FIG. 3(d) and other figures, the outer peripheral surface of the cylindrical portion 33 is provided with a protrusion 36 that protrudes outward. A plurality of claws 36a are formed at the tip of the protrusion 36. The claws 36a have a sharp shape that points in the same direction as the fastener injection direction and are used to hook onto the workpiece when the fastener is driven obliquely. The claws 36a are formed so as not to protrude distally beyond the tip surface 35 of the cylindrical portion 33, so that the claws 36a do not come into contact with the driving surface during flat driving (driving a nail perpendicular to the workpiece). In this embodiment, when viewed in the radial direction D of the cylindrical portion 33, the claws 36a are always located on the outer peripheral side of the thin-walled portion 34a. Therefore, when the thin-walled portion 34a is brought into contact with the driving surface during oblique driving, the claws 36a always face the driving surface.

[0032] In this embodiment, a plurality of claws 36a (two in this embodiment) are arranged on the outer periphery of the thin-walled portion 34a. By arranging the plurality of claws 36a in this manner, the machine can be supported at multiple points, and the posture of the machine during driving can be stabilized.

[0033] In this embodiment, claws 36b are also arranged on the outer periphery of the non-thin portion 34b. The claws 36b on the outer periphery of the non-thin portion 34b are formed to protrude further toward the tip than the claws 36a on the outer periphery of the thin portion 34a. With this configuration, when the thin portion 34a abuts on the driving surface during oblique driving, the large claws 36b can hook onto the workpiece on the side of the thin portion 34a, further stabilizing the machine's posture.

[0034] In this embodiment, as described above, the tip of the cylindrical portion 33 is provided with a thin-walled portion 34a that is thinner than the other portions when viewed in the circumferential direction. With this configuration, by abutting the thin-walled portion 34a against the driving surface, the injection port 33b can be brought as close as possible to the driving surface, allowing the fastener to be driven deeply. Furthermore, because only a portion of the contact portion 30 is thin-walled, the strength of the contact portion 30 is not significantly impaired.

[0035] Although the above-described embodiment provides the claws 36a with a sharp, pointed shape, the shape of the claws 36a is not limited thereto. For example, the claws 36c shown in FIGS. 5 and 6 may be provided. The claws 36c shown in FIGS. 5 and 6 have a wedge-shaped cutting edge formed in a straight line in a direction perpendicular to the fastener injection direction (i.e., the central axis X of the injection port). The claws 36c may be provided in a single layer, but providing them in multiple layers improves the anti-slip effect. For example, as shown in FIG. 6(d), multiple claws 36c may be provided in parallel in the radial direction D of the tubular portion 33 to form a wavy protrusion. In this case, by making the inner claws 36c protrude further toward the tip than the outer claws 36c, the multiple claws 36c can more easily strike the oblique driving surface.

[0036] Furthermore, although the thin-walled portion 34a in the above-described embodiment is formed to have a surface inclined with respect to the central axis X of the injection outlet 33b, the thin-walled portion 34a does not necessarily have to be an inclined surface. For example, as shown in Figures 7 and 8, the surface of the thin-walled portion 34a may be parallel to the central axis X of the injection outlet 33b. In this way, by making the angle of the surface of the thin-walled portion 34a closer to being parallel with the central axis X of the injection outlet 33b, the injection outlet 33b can be brought closer to the casting surface.

[0037] (Second embodiment) The driving tool 10 according to this embodiment injects a fastener from an injection port 33 b formed at the tip of the nose portion 17 .

[0038] The structure of the driving tool 10 is well known and will not be described in detail, but it is powered by, for example, compressed air, gas, or electricity, and is configured as shown in Figure 1. The driving tool 10 shown in Figure 1 has a rod-shaped grip 11 for an operator to hold. A trigger 12 that can be pulled is located at a position where the operator's index finger will rest when gripping the grip 11. When the trigger 12 is pulled, an internal drive mechanism (such as a piston-cylinder mechanism or a spring mechanism) is activated, and the fastener is driven.

[0039] An output section 16 is connected to the upper end of the grip 11, approximately perpendicular to the grip 11. A nose section 17 protrudes from the tip of the output section 16. The nose section 17 is fixed to the tip of the output section 16. A fastener guide path is formed inside the nose section 17, and the exit of the fastener guide path is the ejection port 33b. A drive mechanism is built into the output section 16, and when the drive mechanism is activated, the fastener is ejected from the nose section 17. More specifically, a driver for ejecting the fastener is guided inside the output section 16 so as to be slidable toward the nose section 17. When the drive mechanism is activated, the driver impulsively slides toward the nose section 17, and the fastener waiting in the guide path of the nose section 17 is ejected by the tip of the driver.

[0040] In addition, a magazine 14 containing connecting fasteners is connected to the rear of the nose portion 17, and the fasteners in the magazine 14 are sequentially supplied into the guide path of the nose portion 17 by a fastener supply mechanism not shown.

[0041] A contact nose 20 is slidably mounted on the tip of the nose portion 17 according to this embodiment. This contact nose 20 is connected to a contact arm that is reciprocally movable relative to the output portion 16, and moves integrally with the contact arm. In its natural state, the contact nose 20 is biased to protrude toward the tip, preventing fastener driving in this state. On the other hand, when the tip of the contact nose 20 is pressed against the workpiece, the contact arm moves together with the contact nose 20, disengaging the safety mechanism and enabling fastener driving.

[0042] The contact nose 20 does not necessarily have to be connected to the contact arm. For example, the contact nose 20 may be fixed to the tip of the output section 16 (nose portion 17) so that it cannot move. The contact nose 20 may also be formed integrally with the nose portion 17. The contact nose 20 may also be formed integrally with the tip of the contact arm.

[0043] As shown in Figures 9 and 10, the contact nose 20 according to this embodiment has a contact portion 30 at its tip. The contact portion 30 is the portion that comes into contact with the workpiece when the fastener is driven. As shown in Figure 10(c), this contact portion 30 has a cylindrical portion 33 that forms an injection path 33a that guides the fastener. The injection path 33a communicates with the inside of the nose portion 17 and forms part of the fastener guide path described above. An injection port 33b that injects the fastener opens at the end of the injection path 33a (the tip of the cylindrical portion 33).

[0044] As shown in Fig. 10(d), the tubular portion 33 according to this embodiment is a cylindrical portion that protrudes toward the tip of the contact portion 30. A tapered portion 34 is formed at the tip of this tubular portion 33. This tapered portion 34 is formed so that the outer diameter gradually decreases toward the tip. By providing this tapered portion 34, it is possible to bring the ejection port 33b as close as possible to the driving surface 40 when driving the nail obliquely. By bringing the ejection port 33b closer to the driving surface, the nail can be driven deeper, which reduces the lift of the nail when driving the nail obliquely.

[0045] Additionally, a plurality of claws 36a are arranged on the cylindrical portion 33 so as to surround the injection port 33b. These claws 36a are arranged on the outer circumferential side of the tip surface 35 of the cylindrical portion 33 which forms the injection port 33b. Furthermore, these claws 36a have a sharp shape that points in the same direction as the fastener injection direction, and are used to hook onto the workpiece when the fastener is driven obliquely. In this embodiment, the plurality of claws 36a are all formed to have the same size and shape, and are arranged at equal intervals in the circumferential direction.

[0046] The driving tool 10 according to this embodiment is configured to have a plurality of such small claws 36a, so that three or more claws 36a can support the machine's posture during oblique driving. Specifically, as shown in Fig. 11, when the tip of the contact portion 30 is brought into contact with the flat driving surface 40 so that the central axis X of the outlet 33b is at 45 degrees relative to the driving surface 40, at least three claws 36a come into contact with (pierce) the driving surface 40. Note that because at least three claws 36a pierce the driving surface 40, depending on how the contact portion 30 is brought into contact, four claws 36a may pierce the driving surface 40, as shown in Fig. 12.

[0047] In order to ensure that at least three claw portions 36a come into contact with the impact surface 40 when impacting at an angle, it is desirable to set the distance between the tips of the multiple claw portions 36a to 5 mm or less, and it is even more desirable to set the distance between the tips to 3 mm or less.

[0048] With this configuration, the machine can be supported by three or more claws 36a at a typical oblique driving angle (approximately 45 degrees). That is, regardless of the circumferential position at which the contact part 30 is brought into contact (without the user being concerned about which claw 36a to hook), three or more claws 36a always come into contact with the driving surface 40, making it easy to stabilize the machine. Also, since it is not necessary to provide large claws as in the past and the machine can be stabilized with small claws 36a, the tip does not need to be large, and visibility of the working area at the tip of the nose part 17 can be improved.

[0049] In the above-described embodiment, the tip surface 35 of the cylindrical portion 33 is formed flat as shown in Fig. 10(d). However, this is not limiting, and the tip of the cylindrical portion 33 may be provided with an anti-slip shape.

[0050] For example, as shown in FIGS. 13 and 14, a circular protrusion 35a may be formed at the tip of the cylindrical portion 33. In the example shown in FIGS. 13 and 14, the protrusion 35a is provided so as to be continuous with the tapered portion 34 (so as to share the tapered surface of the tapered portion 34). The protrusion 35a is formed to protrude further toward the tip than the tip surface 35 of the cylindrical portion 33. The protrusion 35a is formed like a thin blade with a sharpened tip and is provided concentrically with the injection port 33b. The provision of such a circular protrusion 35a can further stabilize the machine's posture during oblique shooting. That is, the circular protrusion 35a can prevent slippage in a direction different from that of the claw 36a at a position away from the claw 36a, thereby stabilizing the machine's posture through a synergistic effect with the claw 36a.

[0051] 15 and 16, the tip surface 35 of the cylindrical portion 33 may be provided with irregularities at regular intervals in the circumferential direction. While the example shown in FIGS. 15 and 16 includes recesses 35b, protrusions may be provided instead. Furthermore, if protrusions are provided, the tips of the protrusions may have a tapered claw shape. Providing such irregularities can further stabilize the machine's posture during oblique striking. In other words, the irregularities can prevent slippage in a direction different from that of the claws 36a at positions away from the claws 36a, thereby stabilizing the machine's posture through a synergistic effect with the claws 36a.

[0052] In the above-described embodiment, the claw portions 36a are provided with sharp pointed shapes, but the shapes of the claw portions 36a may be different. For example, as shown in Figures 17 and 18, the claw portions 36a may be provided with spur teeth. With this configuration, it is possible to reduce the variation in shape during processing compared to when the claw portions 36a are formed with sharp points. [Explanation of symbols]

[0053] 10 Driving tools 11 Grip 12 Triggers 14 Magazine 16 Output section 17 Nose 20 Contact Nose 21 Main body 21a Ring retaining groove 21b Cylinder part 22 O-ring 30 Contact part 31 Insertion section 31a Engagement groove 32 Flange 33 Cylindrical part 33a Ejection Path 33b Injection port 34 Tapered section 34a Thin section 34b Non-thin section 35 Tip surface 35a protrusion 35b recess 36 Protrusion 36a Claw part 36b Claw part 36c Claw part 40 Driving surface D Radial direction of the cylindrical part X central axis of injection port

Claims

1. A driving tool that ejects a fastener from an ejection port formed at the tip of a nose portion, a contact portion is provided at the tip of the nose portion, the contact portion has a cylindrical portion that forms the injection port, the cylindrical portion having a plurality of claw portions arranged to surround the injection port, and a circular, blade-like protrusion with a sharpened tip provided at a tip of the cylindrical portion; The claw portion is disposed on the outer circumferential side of the protrusion, When the tip of the contact portion is brought into contact with the flat driving surface so that the central axis of the injection port is at an angle of 45 degrees with respect to the driving surface, the claw portion is configured to come into contact with the driving surface. Driving tool.

2. the cylindrical portion includes a tapered portion formed so that the outer diameter gradually decreases toward the distal end, The protrusion is formed so as to be continuous with the tapered portion. The driving tool according to claim 1 .

3. The plurality of claws are all formed in the same shape. The driving tool according to claim 1 or 2.

4. The plurality of claw portions are formed so as not to protrude further in a tip direction than the protrusion. The driving tool according to any one of claims 1 to 3.

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