Implement

Abstract

To improve convenience of an implement.SOLUTION: A nailing machine (an implement) 1 has: an injection part 7 supporting a fastener; a driver blade 32 striking the fastener supported by the injection part 7; a plunger 31 to which the driver blade 32 is fitted; and a spring 35 energizing the driver blade 32 to strike the fastener. Moreover, the nailing machine 1 has: a body housing 11 supporting the spring 35; and a magazine part 20 which supplies the injection part 7 with a new fastener when the fastener supported by the injection part 7 is struck. The magazine part 20 can support a plurality of kinds of fasteners and supply the injection part 7 with the fastener. The driver blade 32 is removable to / from the plunger 31 with the plunger 31 supported by the body housing 11.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a work machine such as a nail driver. [Background technology]

[0002] As an example of a working machine, a nail driver is known that includes an ejection part that supports a fastener, an impact part that strikes the fastener, and a magazine that supplies the fastener to the ejection part. Furthermore, as an example of such a nail driver, a nail driver having a structure in which the front end of the magazine is fixed to the ejection part is described in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-34618 A Summary of the Invention [Problem to be solved by the invention]

[0004] The nail driver described in Patent Document 1 is configured so that it can only drive in a specific type of fastener. Specifically, the front end of the magazine is fixed to the ejection part, and the ejection part, driver blade (striking part), and magazine are configured so that they can only handle a specific type of fastener.

[0005] Therefore, when a worker uses multiple types of fasteners, it is necessary to prepare multiple types of nail guns, and it has been desired to improve convenience by enabling multiple types of fasteners to be driven in with a single nail gun.

[0006] In particular, when attempting to drive multiple types of fasteners with a common driver blade, impact marks from the driver blade may be left around the fastener driven into the mating material, making it difficult to configure a single nailer to drive multiple types of fasteners.

[0007] An object of the present invention is to provide a work machine with improved convenience. [Means for solving the problem]

[0008] In one embodiment, the working machine has a support section that supports a fastener, a striking section that strikes a head of the fastener supported by the support section, a biasing section that biases the striking section to one side in a first direction to strike the fastener, a main section that supports the biasing section, and a supply section that supports a plurality of the fasteners and supplies a new fastener to the support section when the fastener supported by the support section is struck, wherein the supply section is capable of supporting a plurality of types of fasteners having different head shapes and is capable of supplying the fasteners to the support section, and the striking section is attachable to and detachable from the biasing section with the biasing section supported by the main section.

[0009] In another embodiment, the working machine has a support portion that supports a fastener, a striking portion that strikes a head of the fastener supported by the support portion, a biasing portion that biases the striking portion to one side in a first direction to strike the fastener, a main body portion that supports the biasing portion, and a supply portion that supports a plurality of the fasteners and supplies a new fastener to the support portion when the fastener supported by the support portion is struck, the striking portion includes a first striking portion and a second striking portion whose end shape on one side in the first direction is different from that of the first striking portion, and the first striking portion and the second striking portion are detachable from the biasing portion when the biasing portion is supported by the main body portion, and alternatively can be attached to the biasing portion. Effect of the Invention

[0010] According to the present invention, the convenience of a work machine can be improved. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a side cross-sectional view showing an internal structure of a nail driver (working machine) according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view showing the external structure of the nail driver shown in FIG. [Diagram 3] FIG. 2 is a side cross-sectional view showing the nail driver shown in FIG. 1 in a state where a lid portion is open. [Figure 4] FIG. 4 is a front view showing the external structure of the nail driver shown in FIG. 3. [Diagram 5] FIG. 4 is a side cross-sectional view showing an ejection unit in an open state of the nail driver shown in FIG. [Figure 6] FIG. 6 is a front view showing the external structure of the nail driver shown in FIG. 5. [Figure 7] FIG. 6 is a side cross-sectional view showing the nail driver shown in FIG. 5 with the blade removed. [Figure 8] FIG. 8 is a front view showing the external structure of the nail driver shown in FIG. 7. [Figure 9] 2 is a front view showing the structure of a pin-type fastener that is struck by the nail driver shown in FIG. 1. FIG. [Figure 10] FIG. 10 is a side view showing the structure of the pin-type fastener shown in FIG. [Figure 11] 2 is a front view showing the structure of a U-shaped fastener that is struck by the nail driver shown in FIG. 1. FIG. [Figure 12] FIG. 12 is a side view showing the structure of the U-shaped fastener shown in FIG. [Figure 13] 2 is a front view showing the structure of a driver blade for a U-shaped fastener attached to the nail driver shown in FIG. 1. FIG. [Figure 14] 2 is a front view showing the structure of a driver blade for a pin-type fastener attached to the nail driver shown in FIG. 1. FIG. [Figure 15] 2 is a front view showing the structure of a blade guide (support portion) provided in the nail driver shown in FIG. 1. FIG. [Figure 16] 2 is a partially enlarged view showing the structure of part A shown in FIG. [Figure 17] 17 is a cross-sectional view showing the structure cut along line BB shown in FIG. 16. [Figure 18] 18 is a cross-sectional view showing a structure in which a pin-type fastener is arranged in the magazine shown in FIG. 17. [Figure 19] 18 is a cross-sectional view showing a structure in which a U-shaped stopper is arranged in the magazine shown in FIG. 17. [Figure 20] 2 is a front view showing the structure of the ejection section of the nail driver shown in FIG. 1 with the guide plate removed when a driver blade for a pin-type fastener is attached. FIG. [Figure 21] FIG. 21 is a front view showing a state in which the pin-type fastener is disposed in the ejection section of the nail driver shown in FIG. 20. [Figure 22] 2 is a front view showing the structure of the ejection section of the nail driver shown in FIG. 1 with the guide plate removed when a driver blade for a U-shaped fastener is attached. FIG. [Diagram 23] FIG. 23 is a front view showing a state in which the U-shaped fastener is disposed in the ejection section of the nail driver shown in FIG. 22. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The nail driver of this embodiment will be described with reference to the drawings.

[0013] The nail driver (working machine) 1 of this embodiment shown in FIG. 1 is suitable for driving fasteners 6 (see FIGS. 9 to 12) such as nails or staples into mating materials such as plate materials and plaster boards.

[0014] The nail driver 1 has a housing 10 and a magazine unit 20. The housing 10 includes a main housing 11, a handle 12, a motor case 13, and a connecting unit 14. One longitudinal end side of the handle 12 and the motor case 13 is connected to the main housing 11, and the other longitudinal end side of the handle 12 and the motor case 13 is connected to the connecting unit 14. In other words, the main housing 11, the handle 12, the motor case 13, and the connecting unit 14 are integrated. The housing 10 is made of synthetic resin such as nylon or polycarbonate. Therefore, the main housing 11, the handle 12, the motor case 13, and the connecting unit 14 that constitute the housing 10 are integrally formed by resin molding. The main housing 11 has a generally rectangular cylindrical shape as a whole.

[0015] Here, the longitudinal direction of the main body housing 11 shown in Fig. 1 is defined as the "up-down direction C1", and the longitudinal direction of the handle 12 and motor case 13 is defined as the "front-rear direction B1". A direction perpendicular to the up-down direction C1 and the front-rear direction B1 is defined as the "left-right direction E1" as shown in Fig. 2. Furthermore, in this embodiment, the up-down direction C1 is defined as the first direction, the front-rear direction B1 is defined as the third direction, and the left-right direction E1 is defined as the second direction. However, these definitions are merely for the convenience of explanation.

[0016] According to the above definition, the handle 12 is located above the motor case 13 and extends rearward from one side (rear side / back surface) of the main body housing 11. On the other hand, the motor case 13 is located below the handle 12 and extends rearward from one side (rear side / back surface) of the main body housing 11. Also, the connecting portion 14 connects the rear of the handle 12 to the rear of the motor case 13. That is, the third direction (front-rear direction) B1 in this embodiment corresponds to the extending direction of the handle 12 in the present invention.

[0017] The nail driver 1 also includes an ejection section (support section) 7 that supports the fastener 6, a striking section 30 that strikes the fastener 6 supported by the ejection section 7, a biasing section that biases the striking section 30 to one side (downward) in a first direction (vertical direction C1) to strike the fastener 6, and a main body section that supports the biasing section. The striking section 30 is an elongated driver blade 32 that is detachably attached to a plunger 31 arranged in the main body housing 11. The driver blade 32 is made of metal.

[0018] Also, the guide shaft 33 is fixed inside the main body housing 11. That is, in the nail driver 1, the guide shaft 33 and the main body housing 11 are provided as the main body. Furthermore, as the urging part, a spring 35 which expands and contracts along the guide shaft 33 and a plunger 31 which moves up and down along the guide shaft 33 together with the spring 35, which will be described later, are provided. Note that the center line A1 is the center of the guide shaft 33. The plunger 31 is attached to the guide shaft 33 which is the main body, and the driver blade 32 is movable in a direction along the center line A1.

[0019] Further, the ejection section 7 is attached to the main housing 11 so as to be exposed to the outside of the main housing 11. The ejection section 7 can be defined as a nose section, and is a support section that supports the fastener 6. The driver blade 32 moves in the vertical direction C1 and strikes the fastener 6 sent to the ejection section 7. The ejection section 7 has a blade guide 5 and a guide plate 38. The blade guide 5 may be made of either metal or synthetic resin. The ejection section 7 is provided with an ejection path 2 formed by the blade guide 5 and the guide plate 38. The ejection path 2 may be any of a groove, a passage, a hole, a gap, and a space. The driver blade 32 is movable within the ejection path 2.

[0020] In addition, a push lever 8 is attached near the tip of the ejection part 7. The push lever 8 can move and stop relative to the ejection part 7. Furthermore, the push lever 8 can come into contact with and separate from a counter material. In addition, the ejection part 7 comes into contact with the driver blade 32, thereby preventing the driver blade 32 from moving in a direction intersecting the center line A1.

[0021] A weight 34 attached to the guide shaft 33 is provided inside the main housing 11. The weight 34 suppresses the reaction force received by the housing 10. The weight 34 is made of metal, for example, and is movable in a direction along the center line A1.

[0022] Furthermore, a metal spring 35 is disposed in the main housing 11. The spring 35 is disposed between the plunger 31 and the weight 34 in the direction along the center line A1. The plunger 31 receives a downward urging force D1 from the spring 35 in the direction along the center line A1 toward the ejection part 7. Meanwhile, the weight 34 receives an upward urging force D2 from the spring 35 in the direction along the center line A1 away from the ejection part 7. In the main housing 11, a weight bumper 36 is provided above the weight 34, and a plunger bumper 37 is provided below the plunger 31. When the weight 34 moves upward, it collides with the weight bumper 36 and stops, and when the plunger 31 moves downward, it collides with the plunger bumper 37 and stops. Both the weight bumper 36 and the plunger bumper 37 are made of synthetic rubber.

[0023] A magazine section 20 is provided on the opposite side of the motor case 13 to the handle 12. The magazine section 20 supports a plurality of fasteners 6 (see Figs. 9 to 12), and is a supply section that supplies new fasteners 6 to the ejection section 7 when a fastener 6 supported by the ejection section (support section) 7 is struck by the driver blade 32. Specifically, the magazine section 20 can accommodate a plurality of fasteners 6 to be struck by the driver blade 32, and has a front end attached to the ejection section 7 and a part of the rear side screwed to the motor case 13. When a fastener 6 is struck by the driver blade 32, the magazine section 20 supplies new fasteners 6 to the ejection section 7.

[0024] As an example, the magazine unit 20 includes a plate-shaped magazine base 20a capable of accommodating a plurality of fasteners 6, and a feeder unit 20b that supplies the plurality of fasteners 6 one by one to the injection path 2. The fasteners 6 sent by the feeder unit 20b to the injection path 2 of the injection unit 7 are struck by a driver blade 32 moving downward D1. The fasteners 6 are then ejected from an injection port 3, which is the exit of the injection path 2, and driven into a mating material. More specifically, the tops of the fasteners 6 sent by the feeder unit 20b from the magazine base 20a of the magazine unit 20 to the injection path 2 are struck by the driver blade 32 moving downward D1.

[0025] Furthermore, in the nail driver 1, a battery pack 19 is attached to the connecting portion 14. The battery pack 19 is a power source unit, and is attached to the connecting portion 14 in an attachable and detachable manner. When a voltage is applied from the battery pack 19 to the electric motor 16 and the motor shaft 17 rotates forward, the rotational force of the motor shaft 17 is transmitted to the first gear 42. The rotational force of the first gear 42 is transmitted to the third gear 44 via the second gear 43.

[0026] A control unit 15 is provided within the connecting unit 14. The control unit 15 is a microcomputer having an input port, an output port, an arithmetic processing unit, and a storage unit. A switch 22 is provided on the upper part of the main body housing 11. The switch 22 is a detection unit that detects the position of the weight 34, and a wiring 23 is electrically connected to the switch 22. The wiring 23 is electrically connected to a wiring board included in the control unit 15 that is disposed at the rear of the handle 12. That is, the nail driver 1 has the wiring 23 that extends from the inside of the main body housing 11 to the inside of the handle 12.

[0027] The handle 12 is provided with a trigger 4 and a trigger switch 41. When the operator applies an operating force to the trigger 4, the trigger switch 41 turns on. When the operator releases the operating force applied to the trigger 4, the trigger switch 41 turns off.

[0028] As described above, when the operator applies an operating force to the trigger 4, the trigger switch 41 is turned on, and when the push lever 8 is pressed against the opposing material, the push lever switch (not shown) is turned on. Then, the control unit 15 applies a voltage to the electric motor 16 to rotate the motor shaft 17. The rotational force of the motor shaft 17 is amplified by the reducer 18 and transmitted to the first gear 42, and the first gear 42, the second gear 43, and the third gear 44 rotate. Then, the striking unit 30 rises from the standby position due to the engagement of at least one of the cam rollers of the first gear 42 and the cam rollers of the second gear 43. Also, the weight 34 descends due to the engagement of the cam roller of the third gear 44.

[0029] Next, when the cam roller of the first gear 42 and the cam roller of the second gear 43 are both released from engagement, the striking portion 30 descends due to the biasing force of the spring 35. Moreover, when the engagement of the cam roller of the third gear 44 is released, the weight 34 ascends due to the biasing force of the spring 35. The driver blade 32 strikes one of the fasteners 6 that has reached the ejection path 2 from the magazine base 20a, and the fastener 6 is driven into the opposing material.

[0030] After the driver blade 32 strikes the fastener 6, the plunger 31 collides with the plunger bumper 37. The plunger bumper 37 absorbs part of the kinetic energy of the striking portion 30. The weight 34 also collides with the weight bumper 36. The weight bumper 36 absorbs part of the kinetic energy of the weight 34. In this way, when the striking portion 30 moves downward D1 to strike the fastener 6, the weight 34 can reduce the recoil when the striking portion 30 strikes the fastener 6.

[0031] Furthermore, the control unit 15 continues to rotate the electric motor 16 even after the operator releases the push lever 8 from the counterpart material after the fastener 6 has been driven into the counterpart material and the trigger switch 41 is turned off. Then, the striking unit 30 rises from the bottom dead center against the biasing force of the spring 35, and the plunger 31 moves away from the plunger bumper 37. When the control unit 15 detects that the striking unit 30 has reached the standby position, it stops the electric motor 16.

[0032] Next, the fasteners 6 that can be struck by the nail driver 1 of this embodiment will be described. The nail driver 1 can strike a plurality of types of fasteners 6. The magazine unit 20 included in the nail driver 1 can support a plurality of types of fasteners 6 and can supply the plurality of types of fasteners 6 to the ejection unit 7. In other words, the magazine unit 20 can support a plurality of different types of fasteners 6 and can supply these plurality of types of fasteners 6 to the ejection unit 7.

[0033] In this embodiment, a case will be described in which the nail driver 1 can strike two types of fasteners 6. The fasteners 6 that the nail driver 1 can strike are, for example, a pin-type fastener 6a shown in Figs. 9 and 10 and a U-shaped fastener 6b shown in Figs. 11 and 12. The pin-type fastener 6a is a long and thin needle-shaped fastener 6 with a head 6c as shown in Figs. 9 and 10, and is also called, for example, a finish nail. On the other hand, the U-shaped fastener 6b is a U-shaped needle-shaped fastener 6 that is bent into a U shape and has approximately the same length on both the left and right sides as shown in Figs. 11 and 12, and is also called a staple. The U-shaped fastener 6b also has a head 6d, but its shape is different from the head 6c of the pin-type fastener 6a. Due to the difference in the shape of the head, the pin-type fastener 6a and the U-shaped fastener 6b have different ranges that are struck by the striking portion 30; specifically, the U-shaped fastener 6b has a wider striking range than the pin-type fastener 6a.

[0034] In the nail driver 1, two types of driver blades 32 can be used as the driver blades 32 capable of striking the above-mentioned two types of fasteners 6, respectively. Specifically, a first driver blade 32b (see FIG. 13) capable of striking the head 6d of the U-shaped fastener 6b and a second driver blade 32a (see FIG. 14) capable of striking the head 6c of the pin-type fastener 6a can be used separately. More specifically, the driver blade 32, which is the striking part 30, includes a first driver blade (first striking part) 32b capable of striking the U-shaped fastener 6b, and a second driver blade (second striking part) 32a, the shape of which at one (lower) end in the first direction (vertical direction C1) is different from that of the first driver blade 32b and capable of striking the pin-type fastener 6a.

[0035] The first driver blade 32b and the second driver blade 32a can be alternatively attached to the plunger (biasing portion) 31 of the nail driver 1. That is, when striking the U-shaped fastener 6b, the first driver blade 32b is attached to the plunger 31, while when striking the pin-type fastener 6a, the second driver blade 32a is attached to the plunger 31. In this way, the nail driver 1 alternatively uses the first driver blade 32b and the second driver blade 32a.

[0036] Here, as shown in Fig. 13, the first driver blade 32b has a flat end on one (lower) side in the first direction (vertical direction C1). That is, a wide flat portion 32d is provided at the lower end of the first driver blade 32b. The first driver blade 32b strikes the U-shaped fastener 6b with this flat portion 32d. Also, a hole portion 32e is provided at the upper portion of the first driver blade 32b.

[0037] On the other hand, the second driver blade 32a is provided with a protruding portion 32c protruding toward one side (downward) in the first direction (vertical direction C1) at an end portion on one side (downward) in the first direction (vertical direction C1) as shown in Fig. 14. That is, the protruding portion 32c is provided at an end portion on the lower side of the second driver blade 32a. The second driver blade 32a strikes the pin-type fastener 6a with this protruding portion 32c. Also, a hole portion 32e is provided at the upper portion of the second driver blade 32a.

[0038] In addition, when the total length of the first driver blade 32b in the vertical direction C1 is L1 and the total length of the second driver blade 32a in the vertical direction C1 (total length including the protruding portion 32c) is L2, it is preferable that L1 = L2. By having L1 = L2, the amount of driving of the fastener 6 into the mating material can be made the same regardless of which driver blade 32 is used.

[0039] In the nail driver 1 of this embodiment, the driver blade 32 can be attached to and detached from the plunger 31 while the plunger 31 is supported by the main housing 11. That is, in the nail driver 1, the driver blade 32 can be attached to and detached from the plunger 31 without disassembling the main housing 11.

[0040] Next, a method of replacing two types of driver blades 32 in the nail driver 1 of this embodiment will be described. As shown in FIG. 2, the nail driver 1 has an elongated opening 21 as shown in FIG. 4 on the front surface of the main body housing 11, and further includes a lid 9 capable of closing the opening 21. FIG. 2 shows a structure in which the lid 9 is closed, and the opening 21 shown in FIG. 3 is closed by the lid 9. In detail, as shown in FIG. 3, the lid 9 is provided on the main body housing 11 so as to be rotatable via a hinge 9a. Therefore, by rotating the lid 9 forward by approximately 90° R1, the vertically elongated opening 21 of the main body housing 11 can be opened as shown in FIG. 4. That is, a part of the front surface of the main body housing 11 can be opened.

[0041] The driver blade 32 is taken out or attached to the plunger 31 through the opening 21. As shown in FIG. 3, the nail driver 1 has a plate 11a disposed between the plunger 31 and the driver blade 32 in the front-rear direction B1. The plate 11a is made of, for example, metal. The plate 11a covers at least a part of the plunger 31 and the spring 35, and is disposed so that the plunger 31 and the spring 35 are not exposed from the opening 21 when the cover 9 is rotated R1. In other words, the plate 11a has a function of protecting the plunger 31 and the spring 35 so that the driver blade 32 is not touched when the driver blade 32 is taken out or attached to the plunger 31.

[0042] 4 and 8, the plate 11a has an elongated hole 11b. The plate 11a is supported by the main body housing 11 so that the elongated hole 11b is parallel to the up-down direction C1.

[0043] The plunger 31 has a pin-shaped protrusion 31a extending forward in the front-rear direction B1. The driver blade 32 has a hole 32e (see FIGS. 13 and 14) through which the protrusion 31a is inserted, and the plunger 31 and the driver blade 32 are engaged with each other by inserting the protrusion 31a into the hole 32e. In other words, the driver blade 32 is engaged with the plunger 31 only by inserting the protrusion 31a of the plunger 31 into the hole 32e. Therefore, the driver blade 32 is movable forward in the front-rear direction B1 relative to the plunger 31 and can be removed from the plunger 31.

[0044] Specifically, the engagement between the plunger 31 and the driver blade 32 can be released by sliding the driver blade 32 forward in the front-rear direction B1 relative to the protruding portion 31a of the plunger 31, and the driver blade 32 can be pulled out forward through the opening 21 as shown in Fig. 7. In other words, the striking portion 30 including the driver blade 32 is attached to and detached from the plunger (biasing portion) 31 through the opening 21. As a result, in this embodiment, the first driver blade 32b can be replaced with the second driver blade 32a, or the second driver blade 32a can be replaced with the first driver blade 32b, through the opening 21.

[0045] The plunger 31 and the driver blade 32 are movable up and down within the range of the long hole 11b of the plate 11a.

[0046] In addition, the opening 21 is elongated in the vertical direction C1 along the elongated shape of the driver blade 32 so that the driver blade 32 can be attached to and detached from the plunger 31. In addition, the cover 9 covering the opening 21 is also elongated as shown in FIG.

[0047] 5, by rotating the lever 38b of the guide plate 38 downward in the ejection section 7, the catch portion 38a of the guide plate 38 is disengaged from the hook 5b of the blade guide 5 shown in FIG. 3, and the guide plate 38 can be slid downward relative to the long hole 5a of the blade guide 5. This allows the entire driver blade 32 to be seen through the opened opening 21, as shown in FIG. 6. As a result, the driver blade 32 can be easily removed from and attached to the plunger 31 through the opening 21, as shown in FIG. 7.

[0048] Next, the ejection section (support section) 7 of the nail driver 1 will be described with reference to Figs. 15 and 16. The ejection section 7 includes a blade guide 5 shown in Fig. 15 and a guide plate 38 shown in Fig. 16. The blade guide 5 has a rear wall 7a extending in the left-right direction E1, and two side walls 7b standing upright from the rear wall 7a in the front-rear direction B1 (see Fig. 16) and aligned in the left-right direction E1. The guide plate 38 has a front wall 38c facing the rear wall 7a in the front-rear direction B1. That is, the ejection section 7 is provided with the rear wall 7a of the blade guide 5, two side walls 7b arranged on both the left and right sides of the rear wall 7a, and a front wall 38c of the guide plate 38 facing the rear wall 7a.

[0049] Furthermore, as shown in Fig. 15, a supply path 7c is provided in the rear wall 7a of the blade guide 5, through which fasteners 6 (see Figs. 9 to 12) are supplied from a magazine section (supply section) 20 shown in Fig. 16. This supply path 7c includes a common path 7d through which all of the multiple types of fasteners 6 pass.

[0050] In the case of the nail driver 1 of this embodiment, both of the two types of fasteners 6, the pin-type fastener 6a and the U-shaped fastener 6b, can pass through the supply passage 7c. Specifically, the supply passage 7c is formed in a U-shape. Of the bifurcated U-shaped supply passages 7c, the passage on the left side in the figure is the common passage 7d. That is, the pin-type fastener 6a passes through the common passage 7d on the left side in the figure. The common passage 7d is located close to one of the two side walls 7b in the left-right direction E1. In this embodiment, the common passage 7d is located close to the left side wall 7b of the two left and right side walls 7b.

[0051] On the other hand, the U-shaped stopper 6b passes through the entirety of the bifurcated U-shaped supply path 7c.

[0052] In this way, since the supply path 7c includes a common path 7d through which all of the multiple types of fasteners 6 pass, there is no need to provide multiple types of supply paths 7c, and the injection section 7 can be made smaller.

[0053] Next, the magazine section 20 of the nail driver 1 will be described with reference to Figs. 17 to 19. As shown in Fig. 17, the magazine section 20 is an example of a supply section capable of supporting a plurality of types of fasteners 6, such as pin-type fasteners 6a and U-shaped fasteners 6b, and supplying a plurality of types of fasteners 6 to the ejection section 7. The magazine section 20 is composed of a U-shaped feeder section 20b that pushes the fasteners 6 forward, a magazine base 20a that guides the movement of the feeder section 20b, a magazine cover 20c, and a plate-shaped section 20d. The feeder section 20b is assembled to the magazine cover 20c, and is biased toward the ejection section 7 side (forward side) shown in Fig. 16 by a spring 24 interposed between the feeder section 20b and the magazine cover 20c.

[0054] The plate-shaped portion 20d is included in the magazine cover 20c. In other words, the plate-shaped portion 20d is a part of the magazine cover 20c, and is disposed between the two feeders of the U-shaped feeder portion 20b.

[0055] Therefore, as shown in FIG. 18, when the pin type fastener 6a is loaded, the pin type fastener 6a is positioned by being sandwiched between the plate-like portion 20d and the magazine base 20a.

[0056] On the other hand, as shown in FIG. 19, when the U-shaped fastener 6b is loaded, the U-shaped fastener 6b is positioned so that the U-shaped fastener 6b sandwiches the plate-like portion 20d.

[0057] As shown in Fig. 20 and Fig. 21, when striking the pin type fastener 6a, a plurality of pin type fasteners 6a are stored in the magazine section 20 shown in Fig. 16, and the second driver blade 32a is attached to the protruding portion 31a of the plunger (see Fig. 1). At that time, the protruding portion 32c at the tip of the second driver blade 32a is arranged so that its position in the left-right direction E1 overlaps with the common path 7d. That is, as shown in Fig. 21, the second driver blade 32a is attached so that the protruding portion 32c at the tip is arranged above the pin type fastener 6a arranged in the common path 7d of the ejection section 7.

[0058] This allows the pin-type fastener 6a to be driven in by the protruding portion 32c at the tip of the second driver blade 32a.

[0059] On the other hand, as shown in Fig. 22 and Fig. 23, when striking the U-shaped stopper 6b, a plurality of U-shaped stoppers 6b are stored in the magazine unit 20 shown in Fig. 16, and the first driver blade 32b is attached to the protruding portion 31a of the plunger (see Fig. 1). At that time, the flat portion 32d at the tip of the first driver blade 32b is arranged so that its position in the left-right direction E1 overlaps with the U-shaped supply path 7c. That is, as shown in Fig. 23, the first driver blade 32b is attached so that the flat portion 32d at the tip is arranged above the U-shaped stopper 6b arranged in the U-shaped supply path 7c of the ejection unit 7.

[0060] This allows the U-shaped fastener 6b to be driven in by the flat portion 32d at the tip of the first driver blade 32b.

[0061] According to the nail driver 1 of this embodiment, even when an operator uses a plurality of types of fasteners 6, the driver blade 32 can be attached to and detached from the plunger 31 while the main housing 11 supports the urging parts such as the plunger 31. That is, since the driver blade 32 can be attached to and detached from the plunger 31 through the opening 21 provided in the main housing 11, the driver blade 32 can be easily replaced without disassembling the main housing 11. In other words, the striking parts 30 such as the driver blade 32 can be easily replaced through the opening 21 provided in the main housing 11 without disassembling the driving mechanism.

[0062] As a result, even when an operator uses multiple types of fasteners 6, it is not necessary to prepare multiple types of nail drivers, and multiple types of fasteners 6 can be driven in with one nail driver 1. As a result, the convenience of the nail driver 1 can be improved.

[0063] In addition, the driver blade 32 can be easily replaced through the opening 21 provided in the main housing 11 without disassembling the main housing 11, etc., so instead of using a common driver blade 32 for multiple types of fasteners 6, it is possible to attach a dedicated driver blade 32 to each of different types of fasteners 6, such as a pin-type fastener 6a and a U-shaped fastener 6b, and drive them in.

[0064] This allows the use of driver blades 32 having shapes corresponding to the respective fasteners 6, and for example, makes it possible to prevent the driver blade 32 from forming a dent around the fastener 6 driven into the mating material. Specifically, when driving in a pin-type fastener 6a, a second driver blade 32a having a protrusion 32c at its tip can be attached, and the second driver blade 32a can be attached to the plunger 31 so that the protrusion 32c at the tip is positioned above the pin-type fastener 6a.

[0065] As a result, the pin-type fastener 6a can be struck by the protruding portion 32c at the tip of the second driver blade 32a. At that time, since the protruding portion 32c strikes the pin-type fastener 6a, it is possible to prevent the portion of the second driver blade 32a that is recessed from the protruding portion 32c at the tip from coming into contact with the mating material, and therefore it is possible to prevent the formation of a mark of the second driver blade 32a around the pin-type fastener 6a that has been driven into the mating material.

[0066] Next, a modified nail driver 1 will be described. The nail driver 1 shown in Fig. 1 is a working machine capable of driving in multiple types of fasteners 6, such as pin-type fasteners 6a and U-shaped fasteners 6b, by changing the driver blade 32 according to the type of fastener 6 for one type of ejection unit 7 and magazine unit 20, but the working machine may be a nail driver 1 capable of driving in multiple types of fasteners 6 by changing the ejection unit 7, the driver blade 32, and the magazine unit 20. In other words, the nail driver 1 may be a nail driver 1 in which the ejection unit 7 is detachable and multiple types of ejection units 7 or magazine units 20 can be selectively attached to the main body housing 11.

[0067] The present invention is not limited to the above-mentioned embodiment, and various modifications are possible without departing from the spirit of the present invention. For example, in the above-mentioned embodiment, the nail driver 1 is described as being capable of driving in a plurality of types of fasteners 6, such as the pin-type fastener 6a and the U-shaped fastener 6b, by replacing the driver blade 32. However, the nail driver 1 may be a nail driver 1 capable of driving in a plurality of types of U-shaped fasteners 6b having different widths by replacing the driver blade 32. [Explanation of symbols]

[0068] 1...Nail gun (working machine), 2...Ejection path, 3...Ejection port, 4...Trigger, 5...Blade guide, 5a...Long hole, 5b...Hook, 6...Fastener, 6a...Pin-type fastener, 6b...U-shaped fastener, 6c...Head, 6d...Head, 7...Ejection section (support section), 7a...Rear wall, 7b...Side wall, 7c...Supply path, 7d...Common path, 8...Push lever, 9...Cover section, 9a...Hinge section, 10...Housing, 11...Main body housing (main body section), 11a...Plate, 11b...Long hole, 12...Handle, 13...Motor case, 14...Connecting section, 15...Control section, 16...Electric motor, 17...Motor shaft, 18...Reduction gear, 19...Battery pack, 20...Magazine section (supply section), 20a...Magazine base, 20b...Feeder section, 20c...Magazine cover, 20d...Plate-shaped section, 21...Opening, 22...switch, 23...wiring, 24...spring, 30...striking portion, 31...plunger (urging portion), 31a...projection portion, 32...driver blade, 32a...second driver blade (second striking portion), 32b...first driver blade (first striking portion), 32c...projection portion, 32d...flat portion, 32e...hole portion, 33...guide shaft (main body portion), 34...weight, 35...spring (urging portion), 36...weight bumper, 37...plunger bumper, 38...guide plate, 38a...hook portion, 38b...lever, 38c...front wall, 41...trigger switch, 42...first gear, 43...second gear, 44...third gear, A1...center line, B1...front-rear direction, C1...up-down direction, D1...downward, D2...upward, E1...left-right direction, L1, L2...length, R1...rotation

Claims

1. A support portion that supports the fastener; a striking portion that strikes a head portion of the fastener supported by the support portion; a biasing portion that biases the striking portion to one side in a first direction to strike the stopper; A main body portion supporting the biasing portion; a supply section that supports a plurality of the fasteners and supplies a new fastener to the support section when the fastener supported by the support section is struck, the supply unit is capable of supporting a plurality of types of fasteners having different head shapes and supplying the fasteners to the support unit, The impact portion is detachable from the urging portion while the urging portion is supported by the main body portion.

2. The hitting portion includes a first hitting portion and a second hitting portion having an end portion on one side in the first direction that is different in shape from the first hitting portion, The work machine according to claim 1 , wherein the first impact portion and the second impact portion are selectively attachable to the biasing portion.

3. The first impact portion has a flat end on one side in the first direction, The work machine according to claim 2 , wherein the second striking portion is provided at an end portion on one side in the first direction with a protruding portion that protrudes toward the one side in the first direction.

4. the support portion has a rear wall extending in the first direction and a second direction perpendicular to the first direction, two side walls standing from the rear wall in a third direction perpendicular to the first direction and the second direction and aligned in the second direction, and a front wall facing the rear wall in the third direction, a supply passage through which the fastener is supplied from the supply section is provided in the rear wall; The supply path includes a common path through which all types of fasteners of the plurality of types of fasteners pass, The work machine according to claim 3 , wherein the protrusion is disposed so that its position in the second direction overlaps with the common path.

5. The work machine according to claim 4 , wherein the common path is disposed adjacent to one of the two side walls in the second direction.

6. The work machine according to claim 5 , wherein the fasteners include a U-shaped fastener and a pin-type fastener.

7. The body portion includes a housing having an opening, The work machine according to claim 5 , wherein the striking portion is attached to and detached from the biasing portion through the opening.

8. The work machine according to claim 5 , wherein the support portion is detachable, and a plurality of types of the support portion are selectively attachable to the main body portion.

9. the supply unit includes a magazine capable of supporting the plurality of types of fasteners, The work machine according to claim 5 , wherein the magazine is capable of supplying the plurality of types of fasteners to the support portion.

10. A support portion that supports the fastener; a striking portion that strikes a head portion of the fastener supported by the support portion; a biasing portion that biases the striking portion to one side in a first direction to strike the stopper; A main body portion supporting the biasing portion; a supply section that supports a plurality of the fasteners and supplies a new fastener to the support section when the fastener supported by the support section is struck, The hitting portion includes a first hitting portion and a second hitting portion having an end portion on one side in the first direction that is different in shape from the first hitting portion, A work machine, wherein the first impact portion and the second impact portion are detachable from the urging portion and alternatively attachable to the urging portion in a state in which the urging portion is supported by the main body portion.

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