Driving tool

Abstract

The present application provides a driving tool. The driving tool (10) has a driving passage (2f) for supplying a staple (20). A driver (5) strikes the staple (20) in the driving passage (2f). The struck staple (20) abuts against a moving member (4) that protrudes to a protruding position toward the driving passage (2f). The moving member (4) that abuts against the staple (20) moves to a retreat position that retreats from the driving passage (2f) in a direction away from a supply side of the staple (20). Accordingly, the orientation of the staple can be corrected with a simpler structure.

Description

Technical Field

[0001] This invention relates to a driving tool. Background Technology

[0002] A U-shaped staple, for example, is U-shaped and used to install mounting components onto other components. One type of U-shaped staple is known for mounting electrical wires to wooden supports, etc. This type of U-shaped staple has a resin cover to prevent damage to the wire. More specifically, the U-shaped staple has a metal U-shaped body and a cover that covers the crown of the U-shaped body. Multiple U-shaped staples are arranged side-by-side and connected by ribs that connect the covers.

[0003] The connected U-shaped nails are housed in the nail magazine of the driving tool. The U-shaped nails are supplied one by one from the nail magazine into the driving channel of the tool body. In the driving channel, the U-shaped nails are struck by a driver. The driver drives the U-shaped nails in while breaking the ribs of the cover. Thus, the ribs act as resistance, causing the U-shaped nails to tilt. Specifically, the U-shaped nails are tilted around a rib located on one side at the rear, causing the tip of the U-shaped nail to tilt towards the rib side, and pass through the driving channel in this orientation.

[0004] Patent Document 1 describes an insertion tool with a protrusion extending into an insertion channel. This protrusion abuts against the end of a cover of a U-shaped nail that moves within the insertion channel in the supply direction. This corrects the orientation of the U-shaped nail. Furthermore, a brittle portion is formed at the point where the cover abuts the protrusion, and this brittle portion breaks upon impact with the protrusion. By breaking the brittle portion, the U-shaped nail is properly inserted through the protrusion. However, the aforementioned structure requires the brittle portion to be provided in the cover, which complicates the structure of the U-shaped nail and makes manufacturing difficult.

[0005] [Existing Technical Documents] [Patent Literature]

[0006] Patent Document 1: US Patent No. 10704583 Summary of the Invention

[0007] [The technical problem the invention aims to solve]

[0008] Therefore, there has always been a need for a driving tool that can correct the orientation of U-shaped nails with a simpler structure.

[0009] [Technical solutions used to solve technical problems]

[0010] According to one aspect of the present invention, a driving tool has a driving channel for supplying U-shaped nails. A driver strikes the U-shaped nail in the driving channel. The struck U-shaped nail abuts against a moving member at a protruding position protruding into the driving channel. The moving member abutting against the U-shaped nail moves away from the supply side of the U-shaped nail to a retracted position, retracting from the driving channel. Therefore, by abutting the U-shaped nail against the moving member, the orientation of the U-shaped nail can be changed to a more favorable direction. Furthermore, the moving member moves to the retracted position simultaneously with abutting against the U-shaped nail. Accordingly, the moving member does not obstruct the driving of the U-shaped nail, and the U-shaped nail can be driven in appropriately. Attached Figure Description

[0011] Figure 1 This is a right view of the injection tool involved in this invention after part of the housing has been removed.

[0012] Figure 2 This is a longitudinal sectional view of the injection head.

[0013] Figure 3 This is a three-dimensional view of the injection channel from above.

[0014] Figure 4 This is a three-dimensional view of the injection channel from below.

[0015] Figure 5 This indicates the state of the driver striking the U-shaped pin, equivalent to... Figure 2 A sectional view.

[0016] Figure 6 This indicates the state of contact between the U-shaped nail and the moving part, equivalent to... Figure 2 A sectional view.

[0017] Figure 7 This indicates the state of the moving part having moved to the retracted position, equivalent to... Figure 2 A sectional view.

[0018] Figure 8 This indicates the state in which the U-shaped nail is driven out, equivalent to... Figure 2 A sectional view.

[0019] Figure 9 This is a longitudinal sectional view of the injection head according to the second embodiment.

[0020] Figure 10 This is a top view of the contact arm.

[0021] Figure 11 It is a 3D diagram of the U-shaped nails.

[0022] Figure 12 This is a top view of a single U-shaped nail.

[0023] Figure 13 yes Figure 12 The XIII view shows the side view of a single piece of the U-shaped nail.

[0024] [Explanation of reference numerals in the attached figures] 10: Insertion tool; 11: Handle; 12: Trigger; 13: Trigger switch; 14: Battery mounting section; 15: Battery pack; 16: Controller; 17: Motor; 18: Reduction gear set; 19: Output shaft; 20: U-shaped pin; 21: U-shaped body; 22: Leg; 22a: Root; 23: Crown; 23a: Rear surface; 24: Cover; 25: Connecting part; 26: Clearance; 1: Tool body; 1a: Housing; 1b: Insertion mechanism; 1c: Piston; 1d: Engaged part; 1e: Shaft; 1f: Outer spring (compression spring); 1g: Inner spring (compression spring); 1h: Reeling mechanism; 1i: Wheel; 1j: Engaged part; 1k: Buffer; 2: Insertion head; 2a: Upper driver guide; 2b: Inlet / outlet channel; 2c: Guide slant 2d: Support part; 2e: Lower driver guide; 2f: Injection channel; 2g: Injection outlet; 2h: Contact arm (first embodiment); 2i: Spring; 2j: Switch; 2k: Cable guide; 2m: Leaf spring; 2n: Front part; 2p: Rear part; 2r: Rolling element; 3: Nail box; 4: Moving part; 4a: Upper region; 4b: Protrusion; 4c: Rear surface; 4d: Sliding inclined surface; 4e: Groove; 4f: Upper end; 5: Driver; 5a: Top; 5b: Bearing groove; 30: Injection head (second embodiment); 31: Contact arm; 31a: Hollow part; 31b: Engaging part; 32: Interference mechanism; 33: Compression spring; 34: Sensor; 35: Intermediate plate; 36: Front stop; 37: Rear stop; 40: Connecting U-shaped nail. Detailed Implementation

[0025] According to another embodiment of the present invention, the force-applying member applies force to the moving member toward the protruding position. Therefore, the moving member abuts against the U-shaped nail with appropriate force. Furthermore, the moving member retracts with appropriate force.

[0026] According to another embodiment of the present invention, a rolling element is provided between the force-applying component and the moving component. Therefore, the rolling element reduces the friction between the force-applying component and the moving component. Consequently, the moving component can easily move relative to the force-applying component.

[0027] According to another aspect of the invention, a groove for receiving the rolling element is formed in the moving member. Therefore, the rolling element enters the groove. Consequently, the rolling element can roll appropriately between the moving member and the force-applying member without falling to the outside.

[0028] According to another aspect of the invention, the groove is a shape that deepens as it approaches the impact direction of the driver. Therefore, the closer the rolling element is to the opposite side of the impact direction, the larger the portion protruding from the groove towards the force-applying member. This increases the distance between the moving member in the retraction position and the force-applying member, thus avoiding mutual interference. Furthermore, the initial position of the rolling element can be configured at the top edge of the groove in the impact direction. Accordingly, displacement of the rolling element relative to the moving member in the opposite direction of the impact direction, caused by the difference in the amount of movement of the moving member traveling in the impact direction, can be permitted.

[0029] According to another technical solution of the present invention, the force-applying component is a leaf spring. Therefore, it is possible to apply force to a moving component using such a simple structure as a leaf spring.

[0030] According to another embodiment of the invention, the base of the leaf spring in the striking direction of the actuator is supported on the tool body. The top of the leaf spring in the striking direction pushes against the moving member. Therefore, the top of the leaf spring in the striking direction pushes against the moving member. The base of the leaf spring is supported in a relatively wide position on the central side of the tool body. This increases the degree of freedom in the setting position of the leaf spring.

[0031] According to another embodiment of the invention, the driving tool has an inlet / outlet channel for a moving member. The front wall of the inlet / outlet channel in the striking direction has a guide ramp that extends in the supply direction of the U-shaped nail as it approaches the striking direction of the driver. Therefore, when the moving member is pushed in the striking direction by the U-shaped nail, it is guided by the guide ramp to move away from the supply side.

[0032] According to another technical solution of the present invention, the moving component has a sliding inclined surface, which engages with and slides on the guide inclined surface at its front end in the striking direction. Therefore, the moving component can easily slide along the guide inclined surface. Accordingly, the moving component can move to the retreat position with a stable attitude.

[0033] According to another technical solution of the present invention, a receiving groove is formed in the actuator, which extends in the impact direction to allow movement of the moving part. Therefore, the moving part will not interfere with the actuator when the U-shaped nail is driven in.

[0034] According to another technical solution of the present invention, a plurality of U-shaped nails arranged side by side have gaps between adjacent legs in the supply direction and are connected by a connecting part. The plurality of U-shaped nails are supplied one by one into the driving channel. Therefore, even if the U-shaped nail being driven is tilted in the opposite direction of the supply direction by the connecting part, the moving part can properly correct the orientation of the U-shaped nail.

[0035] According to another embodiment of the present invention, the U-shaped nail has a metal U-shaped body and a resin cover, wherein the cover covers at least a portion of the crown of the U-shaped body. Therefore, the cover inhibits damage to components such as wires that are struck.

[0036] According to another technical solution of the present invention, a compression spring is provided to apply force to the actuator in the striking direction. Therefore, the actuator can strike the U-shaped nail by the elastic force of the compression spring.

[0037] According to another aspect of the invention, the driving tool has a contact arm movably disposed on a driver guide having a driving channel, abutting against the workpiece or fixed object. The contact arm overlaps at least a portion of an interference mechanism consisting of a moving member, a force-applying member, and a rolling element in its thickness direction. Therefore, the interference mechanism and the contact arm are compactly arranged in the thickness direction (the direction intersecting the extension direction). Accordingly, the so-called center height of the driving head can be reduced.

[0038] According to another technical solution of the present invention, the contact arm has a hollow portion, and at least a portion of the interference mechanism is inserted into the hollow portion. Therefore, the interference mechanism and the contact arm can be arranged to overlap in the thickness direction with a simple structure.

[0039] Next, based on Figures 1 to 8 An embodiment of the present invention will be described. For example... Figure 1 As shown, the driving tool 10 is a mechanical spring type that uses the elasticity of a compression spring to drive the U-shaped nail 20. In the following description, the driving direction of the U-shaped nail 20 (the striking direction of the driver 5) is defined as forward, and the opposite direction is defined as rearward. The user holds the driving tool 10 by hand, positioned at the rear of the driving tool 10 (in... Figure 1 (The center is the left side of the paper). The vertical and horizontal directions are defined based on the user.

[0040] like Figure 1 As shown, the driving tool 10 has a tool body 1 on its upper part. The tool body 1 has a generally cylindrical housing 1a extending in the front-rear direction. A driving mechanism 1b is housed in the housing 1a. The driving mechanism 1b has a shaft portion 1e extending in the front-rear direction. A plunger 1c is mounted on the shaft portion 1e, and the plunger 1c can reciprocate in the front-rear direction. An outer spring 1f and an inner spring 1g, which are compression springs, are provided behind the plunger 1c. The elastic force of the outer spring 1f and the inner spring 1g acts as a thrust to propel the plunger 1c forward.

[0041] like Figure 1As shown, a cylindrical handle 11 extending vertically is provided at the lower part of the tool body 1. A trigger 12 is provided on the upper front surface of the handle 11. The user holds the handle 11 and pulls the trigger 12 with their fingertips. A trigger switch 13 is provided behind the trigger 12, which switches from an off state to an on state by pulling the trigger 12. The pulling of the trigger 12 is only effective when the switch 2j is in the on state by retracting the contact arm 2h.

[0042] A battery mounting section 14 extending in the front-to-back direction is provided below the handle 11. A battery pack 15 is detachably mounted on the battery mounting section 14. The battery pack 15 can be attached to and detached from the battery mounting section 14 by sliding in the front-to-back direction. The battery pack 15 operates as a power source supplying power to the motor 17 and other components described later. A controller 16 is disposed above the battery pack 15. The controller 16 mainly controls the drive of the motor 17.

[0043] A motor 17, serving as a drive source, is housed inside the lower part of the handle 11. The motor 17 is maintained in an orientation with its axis pointing vertically. The motor 17 is powered by the battery pack 15 and is activated by pulling the trigger 12. A reduction gear set 18 is provided above the motor 17. The reduction gear set 18 has an upwardly projecting output shaft 19. A winding mechanism 1h is provided above the output shaft 19. The motor 17, output shaft 19, and winding mechanism 1h are arranged coaxially. The rotational output of the motor 17 is reduced in speed by the reduction gear set 18 and then output to the winding mechanism 1h.

[0044] like Figure 1 As shown, the winding mechanism 1h is located below the input mechanism 1b and is housed inside the housing 1a. The winding mechanism 1h has a wheel portion 1i connected to the output shaft 19. The wheel portion 1i rotates integrally with the output shaft 19. Two upwardly protruding engaging portions 1j are provided on the upper surface of the wheel portion 1i. Each engaging portion 1j is a cylindrical shaft component extending in the vertical direction.

[0045] With switch 2j turned on, the motor 17 is activated when the user pulls trigger 12. As the wheel 1i rotates, the engaging part 1j of the winding mechanism 1h engages with the engaged part 1d of the plunger 1c from the front, pressing the plunger 1c backward. Accordingly, the plunger 1c moves to the position just before insertion, i.e., the top dead center. Then, as the wheel 1i continues to rotate further, the engaging part 1j disengages from the engaged part 1d. As a result, the plunger 1c advances under the elastic force of the outer spring 1f and the inner spring 1g. The advancing plunger 1c collides with the buffer 1k. The buffer 1k stops the forward movement of the plunger 1c and absorbs the impact during the collision. The buffer 1k prevents damage to the plunger 1c.

[0046] like Figure 1 As shown, a long, flat, plate-shaped actuator 5 is mounted on the upper front part of the plunger 1c. The actuator 5 moves integrally with the plunger 1c in the front-back direction. The top 5a of the actuator 5 enters the injection head 2. Figure 3 As shown, the top 5a of the driver 5 is adapted to the width of the U-shaped pin 20, forming a shape that is wider in the left-right direction. A concave receiving groove 5b extending in the front-back direction is formed in the center of the upper surface of the driver 5. The receiving groove 5b is used to avoid interference between the driver 5 and the moving part 4 (described later) when the driver 5 moves forward.

[0047] like Figure 1 As shown, an injection head 2 is provided at the front of the tool body 1. The injection head 2 has an upper drive guide 2a and a lower drive guide 2e connected to each other in the vertical direction. Figure 2 As shown, an insertion channel 2f is formed between the upper driver guide 2a and the lower driver guide 2e. The rear end of the insertion channel 2f communicates with the interior of the housing 1a. The front end of the insertion channel 2f forms an ejection port 2g from which the U-shaped nails 20 are ejected. A generally rectangular box-shaped nail cartridge 3 extending vertically is connected to the lower surface of the lower driver guide 2e. Multiple U-shaped nails 20 arranged vertically are housed within the nail cartridge 3. The U-shaped nails 20 are supplied one by one from the nail cartridge 3 toward the insertion channel 2f.

[0048] like Figure 2 , Figure 3 As shown, the U-shaped nail 20 is a U-shaped nail for wires, used to fasten wires to a driven component such as a support. The U-shaped nail 20 has a U-shaped body 21, which is formed by bending a metal wire. The U-shaped body 21 has a pair of legs 22 and a crown 23 connecting the legs 22. Additionally, the U-shaped nail 20 has a resin cover 24 that covers the crown 23. The cover 24 opens rearward so that the rear surface of the crown 23 (the contact surface with the driver 5) is exposed rearward. The cover 24 protects the fastened wire and improves the insulation of the U-shaped nail 20. Each cover 24 is connected to each other adjacent to each other in the vertical direction by rib-shaped connecting portions 25. Thus, each U-shaped nail 20 is connected with a gap 26 in the vertical direction.

[0049] like Figure 2 , Figure 4 As shown, the injection head 2 has a contact arm 2h extending in the front-to-back direction. The contact arm 2h can slide in the front-to-back direction relative to the upper driver guide 2a. The contact arm 2h is forced forward relative to the upper driver guide 2a by a spring 2i. The contact arm 2h retracts along the upper driver guide 2a by being pressed against the injection object, wire, etc. The retraction of the contact arm 2h presses the switch 2j behind it (see reference). Figure 1 (and switch to the connected state.)

[0050] In addition, such as Figure 2 As shown, the injection head 2 has cable guides 2k on both sides of the contact arm 2h. Each cable guide 2k can slide independently relative to the upper drive guide 2a in the front-back direction. Each cable guide 2k is forced forward. The front end of each cable guide 2k is located further forward than the front end of the contact arm 2h. The U-shaped nail 20 is ejected with wires passing between the cable guides 2k, thereby allowing wires to pass appropriately between the legs 22 of the U-shaped nail 20.

[0051] like Figure 2 As shown, an inlet / outlet channel 2b extending vertically is formed in the upper driver guide 2a. The front wall of the inlet / outlet channel 2b in the impact direction is formed as a guide slope 2c that extends upwards as it moves forward. The guide slope 2c is inclined upwards at approximately 15 to 40 degrees relative to the front-rear direction. The guide slope 2c is provided in the inlet / outlet channel 2b in a manner that allows the moving member 4 to move relative to the upper driver guide 2a.

[0052] Additionally, a leaf spring 2m extending in the front-rear direction is provided on the upper drive guide 2a. The rear portion 2p of the leaf spring 2m is cantilevered by the support portion 2d of the upper drive guide 2a. The support portion 2d has four locations, each consisting of a pair of left and right protrusions formed by two protrusions spaced apart in the front and rear. Alternatively, the support portion 2d may also have a pair of left and right protrusions that are longer in the front and rear directions. Since the rear portion 2p of the leaf spring 2m is cantilevered, the front portion 2n can move up and down relative to the upper drive guide 2a. The rear portion 2p abuts against the rolling element 2r (described later) from above. The leaf spring 2m applies downward force to the moving member 4 via the rolling element 2r. Accordingly, the moving member 4 protrudes (protruding position) from the inlet / outlet channel 2b into the drive channel 2f in the initial state.

[0053] like Figure 3 , Figure 4 As shown, the moving part 4 is a generally rectangular parallelepiped-shaped metal component. The moving part 4 has an upper region 4a extending in a generally planar shape and protrusions 4b projecting downwards from the left and right centers of the upper region 4a. In the initial state, the protrusions 4b protrude from the opening of the inlet / outlet channel 2b into the insertion channel 2f. As... Figure 2 As shown, the protrusion 4b protrudes from the upper and lower center of the insertion channel 2f only on the upper side of the upper and lower center. Specifically, the protrusion 4b is located in a position that does not overlap with the vertical arrangement of the leg 22 of the U-shaped nail 20 when viewed from the side. In the protruding position, the upper region 4a is hooked onto the peripheral wall of the opening from above. Accordingly, it is possible to prevent the moving part 4 from completely falling off the upper driver guide 2a into the insertion channel 2f.

[0054] like Figure 2 As shown, the rear surface 4c of the moving member 4 forms a surface orthogonal to the front-rear direction. Furthermore, the front surface of the moving member 4 forms a sliding inclined surface 4d that extends obliquely upwards as it moves forward. The sliding inclined surface 4d is formed across the protrusion 4b and the upper region 4a. The inclination angle of the sliding inclined surface 4d corresponds to the angle of the guide inclined surface 2c of the access channel 2b. The sliding inclined surface 4d is in contact with the guide inclined surface 2c. This allows the moving member 4 to easily slide along the guide inclined surface 2c.

[0055] like Figure 2 , Figure 3 As shown, a groove 4e extending in the left-right direction is formed on the upper surface of the moving member 4. The groove 4e is formed across the entire left-right region of the upper region 4a. The groove 4e is formed with an inclined shape that gradually deepens towards the front. A cylindrical rolling element 2r with its axis pointing left and right is provided in the groove 4e in a manner that allows it to move in the front-back direction. Due to the inclined shape of the groove 4e, the rolling element 2r is initially positioned in front of the groove 4e. The rolling element 2r extends longer than the left-right width of the upper region 4a. The diameter of the rolling element 2r is larger than the maximum depth of the groove 4e. Therefore, the rolling element 2r can protrude upwards from the upper surface of the moving member 4 even at any position in the front-back direction. The rolling element 2r rolls between the moving member 4 and the leaf spring 2m as the moving member 4 slides along the guide slope 2c. Accordingly, the rolling element 2r can reduce the friction between the moving member 4 and the leaf spring 2m. As a result, the moving member 4 can move smoothly relative to the leaf spring 2m. In particular, when the leaf spring 2m applies a downward force to the moving part 4, it can cause the moving part 4 to descend appropriately.

[0056] The following describes the series of procedures for the insertion action performed by the forward movement of the driver 5. Figure 2 This indicates that driver 5 is in the state between the standby position and the top dead center. Then, as... Figure 5 As shown, when the actuator 5 moves forward, the top 5a of the actuator 5 strikes the U-shaped nail 20 driven into the channel 2f. This strike causes the actuator 5 to break the connecting portion 25 of the U-shaped nail 20 driven into the channel 2f from the connecting portion 25 of the U-shaped nails 20 immediately following it. At this point, the connecting portion 25 becomes a resistance, thus causing the U-shaped nail 20 to tilt about the connecting portion 25. That is, the U-shaped nail 20 moves forward in an inclined posture with its tip pointing diagonally downwards.

[0057] like Figure 6As shown, by advancing the U-shaped nail 20 further, the upper front side of the cover 24 collides with the rear surface 4c of the protrusion 4b of the moving member 4 from the rear. Accordingly, the moving member 4 becomes a resistance, thereby causing the U-shaped nail 20 to tilt about the moving member 4. That is, the U-shaped nail 20 is switched to a tilted posture with its tip pointing diagonally upward.

[0058] Then, as Figure 7 As shown, the U-shaped nail 20 is pushed forward by the driver 5. Accordingly, the moving part 4 is pressed forward. Accordingly, the moving part 4 moves forward and rises while sliding along the guide ramp 2c of the inlet / outlet channel 2b. Accordingly, the protrusion 4b of the moving part 4 is pushed upward to a retracted position above the insertion channel 2f. By retracting the protrusion 4b, there is no longer an obstacle hindering the advancement of the U-shaped nail 20, allowing it to advance properly.

[0059] like Figure 7 As shown, the moving part 4 rises against the elastic force of the leaf spring 2m. Meanwhile, the rolling element 2r rolls as the moving part 4 moves forward. Therefore, the moving part 4 can move smoothly relative to the leaf spring 2m. The rolling element 2r retracts relative to the moving part 4. Accordingly, the rolling element 2r moves rearward towards the shallower depth of the groove 4e, thereby pressing the leaf spring 2m further upward. Therefore, the rolling element 2r can prevent interference between the upper end 4f of the rear surface 4c of the moving part 4 and the leaf spring 2m. Furthermore, the aforementioned upper end 4f is machined with a rounded corner by R. This more reliably prevents interference between the upper end 4f and the leaf spring 2m.

[0060] Then, as Figure 8 As shown, the U-shaped nail 20 passes through the moving member 4. Accordingly, the moving member 4 is forced downward by the elastic force of the leaf spring 2m. The moving member 4 descends along the guide ramp 2c, and the protrusion 4b protrudes into the insertion channel 2f. The protruding protrusion 4b is received by the receiving groove 5b of the actuator 5. Accordingly, interference between the moving member 4 and the actuator 5 can be avoided.

[0061] Furthermore, the U-shaped nail 20, via the moving part 4, is ejected from the injection port 2g with its tip facing upwards. This allows the U-shaped nail 20 to be easily and properly driven into the workpiece. Specifically, under normal circumstances, the tool body 1 of the driving tool 10 is subjected to a reaction force generated by the driving action. For example... Figure 1 As shown, the center of gravity of the driving tool 10 is located below the tool body 1 due to the motor 17 and battery pack 15. Therefore, the driving tool 10 is positioned at a lower position than the tool body 1. Figure 1 When viewed from the opposite direction, the actuator 5 sometimes rotates counterclockwise around the handle 11 held by the user due to the reaction force. In this case, the actuator 5 is positioned at an angle upwards.

[0062] If the U-shaped nail 20 were to advance in a downward-facing orientation without the moving part 4, it would be driven out at an angle away from the driver 5. This could cause the driver 5 to disengage from the U-shaped nail 20, resulting in improper driving. However, in this invention, the moving part 4 switches the orientation of the U-shaped nail 20 to an upward-facing orientation. Therefore, even if the driver 5 is oriented upwards by the reaction force during driving, the U-shaped nail 20 tilts in the same direction as the driver 5. Accordingly, the driver 5 can properly drive the U-shaped nail 20 into the driven part.

[0063] In addition, such as Figure 2 , Figure 6 As shown, the moving part 4 is positioned forward of the center of the upper driver guide 2a in the front-rear direction. Specifically, the moving part 4 is configured to switch the posture of the U-shaped nail 20 just before the tip of the U-shaped nail 20 is ejected from the injection port 2g (see reference). Figure 6 Therefore, it is easy to fire the U-shaped nail 20 immediately from the nozzle 2g after switching it to an upward-facing orientation. Furthermore, the moving part 4 can be configured so that the U-shaped nail 20 is not oriented upwards, for example, it can be oriented in a direction horizontal to the striking direction.

[0064] Based on the above, such as Figure 2 As shown, the driving tool 10 has a driving channel 2f for supplying U-shaped nails 20. The driver 5 strikes the U-shaped nail 20 in the driving channel 2f. The struck U-shaped nail 20 abuts against a moving member 4 protruding into the driving channel 2f. The moving member 4, abutting against the U-shaped nail 20, moves away from the supply side of the U-shaped nail 20 to a retracted position, thus retracting from the driving channel 2f. Therefore, by abutting the U-shaped nail 20 against the moving member 4, the orientation of the U-shaped nail 20 can be changed to a more favorable direction. Furthermore, the moving member 4 moves to the retracted position while abutting against the U-shaped nail 20. Accordingly, the moving member 4 does not obstruct the driving of the U-shaped nail 20, thereby enabling the U-shaped nail 20 to be driven in properly.

[0065] like Figure 2 As shown, the force-applying component applies force to the moving component 4 towards the protruding position. Therefore, the moving component 4 abuts against the U-shaped nail 20 with appropriate force. Then, the moving component 4 retracts with appropriate force.

[0066] like Figure 2 As shown, the rolling element 2r is disposed between the force-applying component and the moving component 4. Therefore, the rolling element 2r reduces the friction between the force-applying component and the moving component 4. Thus, the moving component 4 can move relative to the force-applying component more easily.

[0067] like Figure 2As shown, a groove 4e is formed in the moving part 4 to receive the rolling element 2r. Therefore, the rolling element 2r enters the groove 4e. Thus, the rolling element 2r will not fall to the outside and can roll properly between the moving part 4 and the force-applying part.

[0068] like Figure 2 As shown, the groove 4e has a shape that deepens as it approaches the impact direction of the driver 5. Therefore, the closer the rolling element 2r is to the opposite side of the impact direction, the larger the portion protruding from the groove 4e toward the force-applying member. Thus, the distance between the moving member 4 in the retraction position and the force-applying member can be increased, avoiding mutual interference. Furthermore, the initial position of the rolling element 2r can be configured at the top end of the impact direction inside the groove 4e. Accordingly, the relative displacement of the rolling element 2r relative to the moving member 4 in the opposite direction of the impact direction, caused by the difference in the amount of movement between the moving member 4 traveling in the impact direction and the rolling element 2r, can be allowed.

[0069] like Figure 2 As shown, the force-applying component is a leaf spring 2m. Therefore, a force can be applied to the moving component 4 using such a simple structure as the leaf spring 2m.

[0070] like Figure 2 As shown, the base of the leaf spring 2m in the striking direction of the driver 5 is supported on the tool body 1. The top of the leaf spring 2m in the striking direction pushes against the moving member 4. Therefore, the top of the leaf spring 2m in the striking direction pushes against the moving member 4. The base of the leaf spring 2m is supported in a relatively wide position on the center side of the tool body 1. In this way, the degree of freedom in the setting position of the leaf spring 2m is increased.

[0071] like Figure 2 As shown, the driving tool 10 has an inlet / outlet channel 2b for the moving part 4. The front wall of the inlet / outlet channel 2b in the striking direction has a guide ramp 2c, which extends in the supply direction of the U-shaped nail 20 in the striking direction toward the driver 5. Therefore, when the moving part 4 is pushed in the striking direction by the U-shaped nail 20, it is guided by the guide ramp 2c to move away from the supply side.

[0072] like Figure 2 As shown, the moving part 4 has a sliding inclined surface 4d, which engages with the guide inclined surface 2c at its leading edge in the striking direction and slides on the guide inclined surface 2c. Therefore, the moving part 4 can easily slide along the guide inclined surface 2c. Accordingly, the moving part 4 can move to the retreat position with a stable attitude.

[0073] like Figure 2 , Figure 3 As shown, the actuator 5 has a receiving groove 5b that extends in the impact direction, allowing the movement of the moving part 4. Therefore, the moving part 4 will not interfere with the actuator 5 when the U-shaped nail 20 is driven in.

[0074] like Figure 2 As shown, multiple U-shaped nails 20 arranged side by side have gaps 26 between adjacent legs 22 in the supply direction and are connected by a connecting part 25. The multiple U-shaped nails 20 are supplied one by one to the driving channel 2f. Therefore, even if the U-shaped nail 20 being struck is tilted in the opposite direction of the supply direction through the connecting part 25, the moving part 4 can properly correct the orientation of the U-shaped nail 20.

[0075] like Figure 2 , Figure 3 As shown, the U-shaped nail 20 has a metal U-shaped body 21 and a resin cover 24, wherein the cover 24 covers at least a portion of the crown 23 of the U-shaped body 21. Therefore, the cover 24 prevents damage to components such as wires that are struck.

[0076] like Figure 1 As shown, the actuator 5 has compression springs 1f and 1g that apply force to the actuator 5 in the striking direction. Therefore, the actuator 5 can strike the U-shaped nail 20 by the elastic force of the compression springs 1f and 1g.

[0077] Various modifications can be applied to the embodiments described above. The driving tool is exemplified as a mechanical spring type. Alternatively, a gas spring type, for example, can be used to drive in the U-shaped nail 20 using air pressure.

[0078] The moving part may not be the illustrated shape; for example, it may be a structure without a sliding inclined surface.

[0079] Besides leaf springs, the force-applying component can also be a compression spring. The rolling element 2r can be cylindrical or spherical.

[0080] exist Figure 9 , 10 The drawing shows the injection head 30 according to the second embodiment. The second embodiment differs from the first embodiment in that the contact arm and the relative positions of the contact arm and the moving part are different. Components and structures that do not require modification are referred to by the same reference numerals and their descriptions are omitted.

[0081] In the second embodiment, the structure used to cause the moving part 4 to interfere with the U-shaped nail 20 struck by the driver 5 is called the interference mechanism 32. The interference mechanism 32 is composed of the moving part 4, the leaf spring 2m (force-applying part), and the rolling element 2r in the first embodiment.

[0082] The contact arm 31 is configured to move within a certain range forward and backward along the insertion direction. An intermediate plate 35 is adjacent to the rear side of the contact arm 31. The intermediate plate 35 is forced forward by a compression spring 33. The compression spring 33 forces the contact arm 31 forward to the open position. The contact arm 31 retracts to the closed position against the compression spring 33. The closed position of the contact arm 31 is detected by a sensor 34 disposed above the intermediate plate 35.

[0083] Engaging portions 31b are provided on the left and right sides of the contact arm 31. The pair of engaging portions 31b are configured to protrude laterally. A pair of front stops 36 and a pair of rear stops 37 are provided on the upper surface of the lower driver guide 2e. The front stops 36 and rear stops 37 are respectively located on the left and right sides of the contact arm 31. The engaging portions 31b of the contact arm are located between the front stops 36 and the rear stops 37. The forward position of the contact arm 31 is defined by the engagement portion 31b abutting against the front stops 36. The backward position of the contact arm 31 is defined by the engagement portion 31b abutting against the rear stops 37.

[0084] The contact arm 31 in the second embodiment is positioned closer to the insertion channel 2f than the contact arm 2h in the first embodiment. The contact arm 31 in the second embodiment has a hollow portion 31a. The hollow portion 31a has a generally rectangular shape and extends relatively long along the front and back. A portion of the interference mechanism 32 is inserted into the hollow portion 31a.

[0085] In the second embodiment, the leaf spring 2m of the interference mechanism 32 is disposed within the hollow portion 31a. The support portion 2d supporting the rear of the leaf spring 2m is also disposed within the hollow portion 31a. Furthermore, the moving member 4 and the rolling element 2r are pushed upward by the U-shaped pin 20 through a driving action, thereby entering the hollow portion 31a.

[0086] By configuring a portion of the interference mechanism 32 into the hollow portion 31a of the contact arm 31 (so that it overlaps with the contact arm 31 in the thickness direction), the contact arm 31 can be configured closer to the injection channel 2f. Accordingly, compactness in the height direction of the injection head 30 (so-called compactness in the center height) can be achieved.

[0087] An explanation is given regarding the U-shaped nail 20. Figure 11 The diagram shows a connecting U-shaped nail 40 that connects multiple U-shaped nails 20 side by side. Figure 12 , 13 A single U-shaped nail 20 is shown as a single piece. Furthermore, the front-back, left-right, and up-down directions in the figure correspond to the orientation of the nail in the nail cartridge 3 and the orientation of the driving tool 10.

[0088] As described above, the U-shaped nail 20 has a metal U-shaped body 21 and a resin cover 24 covering the U-shaped body 21. The U-shaped body 21 has a pair of legs 22 on the left and right sides and a crown 23 connecting the two legs 22. The cover 24 covers the root 22a of the two legs 22 and a portion of the crown 23.

[0089] The posterior surface 23a of the crown 23 (the contact surface with the driver 5) is exposed and not covered by the cover 24. The posterior surface 23a of the crown 23 protrudes slightly from the rear end of the cover 24. The anterior surface (the side extending from the leg 22) and the left and right sides of the crown 23 are covered by the cover 24. A portion of the area (root 22a) on the side of the crown 23 along the length direction of the two legs 22 is also covered by the cover 24.

[0090] The resin cover 24 functions as a resin connector to connect multiple U-shaped nails 20 to each other in the conveying direction of the nail cartridge. For example, five connectors 25 are provided on the left and right sides of the cover 24 of each U-shaped nail 20. These five connectors 25 are arranged as follows: three along the length of the crown 23 and two adjacent to the root 22a of the left and right legs 22. Two adjacent U-shaped nails 20 are temporarily joined via these five connectors 25 to form a connecting U-shaped nail 40.

[0091] Multiple U-shaped nails 20 are connected side-by-side by a resin cover 24, and the connecting part 25 is easily broken when struck by the driver 5, thereby making it easy for the first U-shaped nail 20 to be struck to separate from the second and subsequent connecting U-shaped nails 40. The struck U-shaped nails 20 are separated with a small force without diminishing the striking force of the driver 5.

[0092] According to the second embodiment, the insertion tool 10 has a contact arm 31, which is movably disposed on the driver guide 2a having an insertion channel 2f and abuts against an object such as a wire. The contact arm 31 is configured to overlap at least a portion of an interference mechanism 32, which consists of a moving member 4, a force-applying member (leaf spring 2m), and a rolling element 2r, in the thickness direction. Therefore, the interference mechanism 32 and the contact arm 31 are compactly arranged in the thickness direction (the direction intersecting the extension direction of the contact arm 31). Accordingly, the so-called center height of the insertion head 30 can be reduced.

[0093] According to the second embodiment, the contact arm 31 has a hollow portion 31a, into which at least a portion of the interference mechanism 32 is inserted. Therefore, the interference mechanism 32 and the contact arm 31 can be arranged to overlap in the thickness direction with a simple structure.

[0094] In the second embodiment, further modifications can be made. For example, an example is shown where a hollow portion 31a is provided, and the interference mechanism 32 is located within the hollow portion 31a, overlapping with the contact arm 31 in the thickness direction. However, it is also possible to have the interference mechanism arranged on the left and right sides of the contact arm 31, overlapping with the contact arm in the thickness direction. In this case, the hollow portion 31a can be omitted.

[0095] In the first and second embodiments, a stapler for driving in U-shaped nails is exemplified as the driving tool; however, the illustrated interference mechanism 32 can also be applied to other driving tools, such as nailing machines. Therefore, the contact arm is not limited to contacting fixed objects such as wires, but also includes contacting the driven-in part such as ordinary sheet metal.

Claims

1. An injection tool, characterized in that, It has an injection channel, a moving part, and a driver, wherein, The insertion channel supplies U-shaped nails; The moving part moves between a protruding position and a retracted position, wherein the protruding position is a position protruding into the insertion channel, and the retracted position is a position retracting from the insertion channel in a direction away from the supply side of the U-shaped nail; The driver strikes the U-shaped nail. The moving part abuts against the driven U-shaped nail to change the orientation of the driven U-shaped nail, and the moving part moves from the protruding position to the retracted position when pressed by the driven U-shaped nail.

2. The insertion tool according to claim 1, characterized in that, It has a force-applying component that applies force to the moving component toward the protruding position.

3. The insertion tool according to claim 2, characterized in that, A rolling element is provided between the force-applying component and the moving component.

4. The insertion tool according to claim 3, characterized in that, The moving part has a groove for the rolling element to be inserted.

5. The insertion tool according to claim 4, characterized in that, The groove is a shape that deepens as it approaches the direction of impact of the driver, and when the rolling element moves in the opposite direction to the direction of impact, the rolling element protrudes further from the groove toward the force-applying component.

6. The driving tool according to any one of claims 2 to 5, characterized in that, The force-applying component is a leaf spring.

7. The insertion tool according to claim 6, characterized in that, The base of the leaf spring in the striking direction of the driver is supported on the tool body. The leaf spring pushes the moving part at its top in the direction of impact.

8. The driving tool according to any one of claims 1 to 7, characterized in that, The device has an inlet / outlet channel with the moving component, and the front wall of the inlet / outlet channel in the striking direction has a guide slope that extends toward the supply direction of the U-shaped nail as it approaches the striking direction of the driver.

9. The insertion tool according to claim 8, characterized in that, The moving component has a sliding inclined surface that engages with the guide inclined surface at its front end in the striking direction and slides on the guide inclined surface.

10. The driving tool according to any one of claims 1 to 9, characterized in that, The actuator has a bearing groove that extends in the impact direction and allows the moving part to move relative to the actuator in a manner that does not interfere with the actuator.

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