Work equipment

Abstract

To improve the usability of the work equipment. [Solution] The impinger 60 includes an injection section 34 that supports the fasteners, a striking mechanism that strikes the fasteners supported by the injection section 34, a magazine section 12 that supplies the fasteners to the injection section 34, and a housing 10 (dust cover 7) that covers the injection section 34. The dust cover 7 has an opening that penetrates the magazine section 12 in the extending direction of the magazine section 12, and the magazine section 12 includes a magazine body that supports a plurality of the fasteners, and a magazine shroud 42a that closes the space between the magazine body and the edge of the opening.

Description

Technical Field

[0008] , , ,

[0001] The present invention relates to a working machine.

Background Art

[0002] As an example of a working machine, a nailing machine having a striking mechanism part such as a driver blade and a piston for striking a nail (fastener) supported by an injection part, and a magazine for supplying nails to the injection part and capable of accommodating a plurality of nails is known.

[0003] For example, Patent Document 1 discloses a nailing machine having a structure in which a magazine is attached to an injection part.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the nailing machine described in the above Patent Document 1, a magazine is detachably attached to an injection part.

[0006] On the other hand, in order to prevent dust from entering the striking mechanism part, a housing may be provided around the injection part. In this case, it is necessary to provide an opening for attaching the magazine in the housing.

[0007] However, when the magazine is configured to be detachably attached, it is necessary to provide a space between the magazine and the edge of the opening. That is, it is necessary to form the size of the opening provided in the housing for attaching and detaching the magazine larger than the magazine.

[0008] As a result, there is a risk that dust enters the striking mechanism part from the space, shortening the life of the nailing machine and impairing the convenience of the nailing machine.

[0009] The objective of this invention is to provide a work machine with improved convenience. [Means for solving the problem]

[0010] A work machine according to one embodiment includes an injection unit for supporting a fastener, a striking mechanism for striking the fastener supported by the injection unit, a magazine unit for supplying the fastener to the injection unit, and a housing covering the injection unit. The housing has an opening that penetrates the magazine unit in the extending direction of the magazine unit, and the magazine unit includes a magazine body for supporting a plurality of fasteners and a cover that closes the space between the magazine body and the edge of the opening. [Effects of the Invention]

[0011] According to the present invention, the convenience of the work machine can be improved. [Brief explanation of the drawing]

[0012] [Figure 1] This is a right-side view showing the structure of the leg-folded state in the work machine according to Embodiment 1 of the present invention. [Figure 2] Figure 1 is a left side view showing the structure of the work machine. [Figure 3] Figure 1 is a bottom view showing the structure of the work machine. [Figure 4] Figure 1 is a right-side view showing the structure of the working machine with its legs protruding. [Figure 5] Figure 4 is a left side view showing the structure of the work machine. [Figure 6] Figure 4 is a bottom view showing the structure of the work machine. [Figure 7] Figure 4 is a right-side view showing a partial cross-section of the internal structure of the work machine. [Figure 8] Figure 1 is an exploded perspective view of the assembly of the legs and magazine cover on the work machine. [Figure 9]It is a side view showing the state in which the legs are protruded and locked on the working machine of FIG. 1. [Figure 10] It is an external view showing the structure seen from the front side of FIG. 9. [Figure 11] It is a cross-sectional view showing the structure cut along the line A-A of FIG. 10. [Figure 12] It is an enlarged partial cross-sectional view showing the structure of the leg attachment part of FIG. 11. [Figure 13] It is a cross-sectional view showing the structure cut along the line B-B of FIG. 11. [Figure 14] It is a cross-sectional view showing the structure cut along the line C-C of FIG. 11. [Figure 15] It is a side view showing the state in which the lock of the legs is released on the working machine of FIG. 1. [Figure 16] It is an external view showing the structure seen from the front side of FIG. 15. [Figure 17] It is a cross-sectional view showing the structure cut along the line A-A of FIG. 16. [Figure 18] It is a cross-sectional view showing the structure cut along the line C-C of FIG. 17. [Figure 19] It is a cross-sectional view showing the structure cut along the line B-B of FIG. 17. [Figure 20] It is a side view showing the state in which the legs are stored on the working machine of FIG. 1. [Figure 21] It is an external view showing the structure seen from the front side of FIG. 20. [Figure 22] It is a cross-sectional view showing the structure cut along the line A-A of FIG. 21. [Figure 23] It is a cross-sectional view showing the structure cut along the line B-B of FIG. 22. [Figure 24] It is a cross-sectional view showing the structure cut along the line C-C of FIG. 22. [Figure 25] It is a right side view showing the structure of the magazine mounting state in the working machine of Embodiment 2 of the present invention in a partial cross-section. [Figure 26] It is a perspective view showing the state of the structure of the working machine shown in FIG. 25 seen from the back side. [Figure 27]Figure 25 is a right-side view showing the work machine with the magazine removed. [Figure 28] Figure 25 is a perspective view showing the work machine with the magazine removed. [Figure 29] This is an enlarged partial cross-sectional view showing the state of the opening around the magazine in the work machine of the comparative example of Embodiment 2. [Figure 30] This is an enlarged cross-sectional view showing the opening in Figure 28 closed by the cover attached to the magazine of the work machine shown in Figure 25. [Figure 31] Figure 25 is a plan view showing the structure of the lid that attaches to the magazine of the work machine shown. [Figure 32] Figure 31 is a side view showing the structure of the lid. [Figure 33] Figure 31 is a rear view showing the structure of the lid. [Figure 34] This is a side view showing the mounting position of the lid of the magazine attached to the work machine shown in Figure 25. [Figure 35] Figure 25 is a perspective view showing the structure of the magazine attached to the work machine, as seen from the front. [Figure 36] Figure 25 is a perspective view showing the structure of the magazine attached to the work machine, as seen from the front. [Figure 37] Figure 25 is a perspective view showing a partially cutaway view of the structure of the magazine attached to the work machine, as seen from below. [Figure 38] This is an enlarged partial perspective view showing the structure of part A in Figure 37. [Figure 39] Figure 25 is a left side view showing the structure of the magazine attached to the work machine. [Figure 40] This is an enlarged side view showing the structure of part A in Figure 39. [Figure 41] This is a rear view showing the structure of the magazine attached to the work machine shown in Figure 25. [Figure 42] This is an enlarged rear view showing the structure of part A in Figure 41. [Figure 43]Figure 25 is a right-side view showing the structure of the magazine attached to the work machine. [Figure 44] This is an enlarged side view showing the structure of part A in Figure 43. [Figure 45] Figure 25 is an exploded perspective view of the magazine assembly components attached to the work machine. [Figure 46] Figure 41 is an external view showing the structure as seen from the front. [Figure 47] This is a side view showing a partially cut section along line AA in Figure 46. [Figure 48] Figure 46 is a partial cross-sectional view showing the feeder and the dry-firing prevention mechanism in contact with each other in the structure cut along the BB line. [Figure 49] Figure 46 is a partial cross-sectional view showing the structure cut along the BB line, with the feeder and the dry-firing prevention mechanism separated. [Figure 50] This is a left side view showing the structure of the work machine according to Embodiment 3 of the present invention. [Figure 51] This is an enlarged side view of the leg portion of the work machine shown in Figure 50, with a portion of it cut away. [Figure 52] Figure 51 is an enlarged perspective view showing the structure of the leg. [Figure 53] Figure 52 is an enlarged perspective view showing the structure of the magazine cover to which the legs are assembled. [Modes for carrying out the invention]

[0013] (Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings. The work machine shown in Figures 1 to 7 is a driving machine suitable for driving fasteners such as nails into a mating material such as a concrete wall. In this Embodiment 1, driving machine 1 will be taken up as an example of a work machine, and nail 3 will be taken up as an example of a fastener and described.

[0014] The driving machine 1 of this embodiment 1 has a cylinder case 2, a motor case 4, and a handle 6. One end of the motor case 4 and the handle 6 is connected to the cylinder case 2, and the other end of the motor case 4 and the handle 6 is connected to a connecting part 8. In other words, one end of the motor case 4 and the handle 6 are connected to each other via the cylinder case 2, and the other end of the motor case 4 and the handle 6 are connected to each other via the connecting part 8. That is, the cylinder case 2, the motor case 4, the handle 6, and the connecting part 8 are an integrated unit. Therefore, in the following description, the cylinder case 2, the motor case 4, the handle 6, and the connecting part 8 may be collectively referred to as the "housing 10".

[0015] The housing 10 is composed of two housing members made of synthetic resin such as nylon or polycarbonate. Specifically, the housing 10, which includes the cylinder case 2, motor case 4, handle 6, and connecting part 8, is formed by two housing members that are butted against each other.

[0016] Here, the longitudinal direction of the cylinder case 2 is defined as "up-down direction (first direction) X1," and the longitudinal direction of the motor case 4 is defined as "front-back direction (second direction) Y1." Furthermore, the direction perpendicular to the up-down and front-back directions is defined as "left-right direction (second direction, perpendicular direction) Z1." However, these definitions are merely for the sake of explanation.

[0017] According to the above definition, the motor case 4 is located below the handle 6 and extends rearward from the cylinder case 2. On the other hand, the handle 6 is located above the motor case 4 and extends diagonally upward from the cylinder case 2 towards the rear.

[0018] As shown in Figure 7, the cylinder case 2 houses the cylinder 20. Furthermore, the cylinder 20 houses the piston 21. The piston 21 housed in the cylinder 20 reciprocates within the cylinder 20 in the axial direction (up and down direction). Inside the cylinder 20, the inner surface of the cylinder 20 and the upper surface of the piston 21 form the piston upper chamber 22. The volume of the piston upper chamber 22 increases or decreases with the reciprocating motion (up and down movement) of the piston 21. Specifically, the volume of the piston upper chamber 22 is minimum when the piston 21 is at top dead center and maximum when the piston 21 is at bottom dead center.

[0019] A driver blade 23 is connected to the lower surface of the piston 21. The driver blade 23 is integrated with the piston 21 and reciprocates (moves up and down) together with the piston 21. The driver blade 23 moves downward and collides with the nail 3, striking the nail 3. In other words, the driver blade 23 is a component that strikes the nail 3 in the downward direction (first direction) X1. Furthermore, the downward direction (one side) in the vertical direction (first direction) in this embodiment 1 coincides with the direction in which the driver blade 23 strikes the nail 3.

[0020] A damper 24 made of rubber or urethane is provided at the bottom of the cylinder 20. The damper 24 receives the piston 21 when it reaches bottom dead center and prevents a collision between the piston 21 and the nose 27 located below the cylinder 20. A driver blade 23 extending downward from the piston 21 passes through the damper 24 and the cylinder 20 and protrudes downward from the cylinder 20.

[0021] In this embodiment 1, the piston 21 and driver blade 23, which are molded separately, are connected and integrated, but the piston 21 and driver blade 23 may be molded as a single unit.

[0022] Furthermore, a magazine section 12 is attached to the side of the housing 10. In the nail driving machine 1, the part above the magazine section 12, including the magazine section 12, is defined as the main body section 1a. On the other hand, an injection passage 31 is provided below the cylinder case 2. The magazine section 12 is capable of accommodating multiple nails 3 and is equipped with a supply mechanism such as a feeder section 33 that supplies the multiple nails 3 contained within to the injection passage 31 one by one.

[0023] Furthermore, the injection passage 31 is formed by a plurality of members (injection passage forming members), including a first blade guide 30 that extends downward from the cylinder case 2. In addition to the first blade guide 30, the injection passage forming members include a second blade guide 39 provided in the magazine section 12 and paired with the first blade guide 30, and a nose 27 positioned above the first blade guide 30 and the second blade guide 39. The first blade guide 30 holds the front side of the injection passage 31, i.e., around the push lever 29. On the other hand, the second blade guide 39 holds the rear side of the injection passage 31, i.e., the magazine section 12.

[0024] In this embodiment 1 of the nail driving machine 1, the mechanism including the piston 21, driver blade 23, cylinder 20, first blade guide 30, and second blade guide 39 is defined as the striking mechanism 5. Therefore, the nail 3 is struck by a part of the striking mechanism 5. The striking mechanism 5 is included in the main body 1a of the nail driving machine 1.

[0025] Furthermore, the driver blade 23 strikes the nail 3 that has been fed into the injection passage 31, which is formed by the injection passage forming member including the first blade guide 30. More specifically, the driver blade 23 strikes the head of the nail 3 that has been fed into the injection passage 31. The nail 3 that has been struck by the driver blade 23 passes through the injection passage 31 and is ejected from the injection passage 31. The first blade guide 30 and the second blade guide 39, which are members that form the injection passage 31, correspond to a part of the injection section 34 of this application. In other words, the injection section 34 supports the nail 3 so that it can be struck by the striking mechanism 5 and forms the injection passage 31 through which the struck nail 3 passes. Furthermore, a part of the injection section 34 protrudes downward (to one side) in the vertical direction X1 from the main body 1a. The magazine section 12 supplies the nails 3 contained in the magazine section 12 to the injection passage 31.

[0026] Furthermore, a pinwheel (winding section) 25 is provided to move the piston 21 from the bottom dead center side towards the top dead center side. The pinwheel 25 is fixed to a drive shaft 14 which is rotationally driven by a motor 13. The pinwheel 25 has a plurality of pins 25a provided at predetermined intervals along the circumferential direction (direction of rotation). On the other hand, the driver blade 23 has a plurality of racks provided at predetermined intervals along the axial direction (vertical direction).

[0027] The rotational driving force output from the motor 13 housed in the motor case 4 is transmitted to the drive shaft 14 to which the pinwheel 25 is attached via a planetary gear type reduction mechanism 15. The motor 13 is an electric brushless motor powered by electricity supplied from a battery 16 mounted on the rear of the housing 10 (the back of the connecting section 8). The connecting section 8 has a built-in controller 17 as the control unit. The controller 17 is a microcomputer composed of a CPU, ROM, RAM, etc., which controls the start / stop, rotation amount, rotation speed, etc. of the motor 13 according to predetermined conditions. The controller 17 is electrically connected to the motor 13 via wiring 18.

[0028] Furthermore, a chamber 26a forming a pressure accumulator 26 is provided above the cylinder 20. The pressure accumulator 26 is in communication with the piston upper chamber 22. In this embodiment 1, the diameter of the chamber 26a is larger than the diameter of the cylinder 20. In a structure in which the chamber 26a has a larger diameter than the cylinder 20, it is possible to keep the overall height of the driving machine 1, including the cylinder 20 and the chamber 26a, low while securing the required volume of the pressure accumulator 26.

[0029] The piston upper chamber 22 and the pressure accumulator chamber 26 are filled with high-pressure gas (compressed air in this embodiment 1). When the piston 21 is moved from the bottom dead center side to the top dead center side (when the piston 21 is raised), the motor 13 rotates forward under the control of the controller 17. When the motor 13 rotates forward, the pinwheel 25 rotates in a predetermined direction.

[0030] As the pinwheel 25 begins to rotate, the multiple pins 25a on the pinwheel 25 sequentially engage with the multiple racks on the driver blade 23. Subsequently, as the pinwheel 25 rotates until the pin 25a furthest downstream in the rotational direction engages with the lowest rack in the vertical direction X1, the piston 21 is pushed up to top dead center.

[0031] As the piston 21 is pushed up as described above, the compressed air in the piston upper chamber 22 is sent to the pressure accumulator chamber 26 and further compressed. Subsequently, as the pin wheel 25 rotates further, the engagement between the pin 25a on the pin wheel 25 and the rack on the driver blade 23 is released. Then, the pressure of the compressed air (air pressure) in the piston upper chamber 22 and the pressure accumulator chamber 26 causes the piston 21 to move from top dead center to bottom dead center, and the driver blade 23 to move downward. In other words, the piston 21 and the driver blade 23 descend.

[0032] The driver blade 23, descending toward the bottom dead center, strikes the nail 3 positioned in the ejection path 31. A push lever 29, movable in the vertical direction X1, is provided at the tip of the ejection section 34. The nail 3, struck by the driver blade 23, is guided by the push lever 29 and ejected from the ejection section 34, where it is driven into the mating material.

[0033] Next, the legs provided on the driving machine 1 of this embodiment 1 will be described.

[0034] The driving machine 1 is positioned differently from the injection unit 34 in the front-to-back direction (second direction) Y1 and is equipped with stabilizers (legs) 11 that protrude downward (on one side) in the vertical direction X1 from the main body 1a. The stabilizers 11 are components that form the legs of the driving machine 1 and are applied to the mating material when driving, supporting the main body 1a of the driving machine 1 so that the driving machine 1 maintains a straight posture. The stabilizers 11 have a roughly trapezoidal shape.

[0035] The push lever 29 protrudes downward from the stabilizer 11, but retracts when pressed against the mating material. The stabilizer 11 is positioned so that the retracted push lever 29 and the stabilizer 11 are at the same height. In other words, the stabilizer 11 is a guide component that maintains the posture of the nail driving machine 1 when driving a nail 3 perpendicularly into a mating material such as a concrete wall.

[0036] As shown in Figure 11, the stabilizer 11 of the driving machine 1 is connected to the main body 1a via a shaft (shaft portion 11a) 11m. Specifically, the stabilizer 11 is connected via the shaft 11m to a magazine cover 37 attached to a magazine portion 12, which is part of the main body 1a. The magazine cover 37 is a component attached to the magazine portion 12 and is a component that rotatably supports the stabilizer 11 via the shaft 11m. In other words, the shaft 11m connects the stabilizer 11 and the magazine cover 37 so that they can rotate relative to each other.

[0037] Furthermore, the stabilizer 11 can rotate around the shaft 11m, allowing it to switch between a protruding state in which it extends downward in the vertical direction X1 from the main body 1a, and a retracted state in which the amount of protrusion from the main body 1a is smaller than that of the protruding state.

[0038] Specifically, the state of the stabilizer 11 shown in Figures 1 to 3 is the stored state, in which the stabilizer 11 is folded towards the main body 1a via the shaft 11m. The amount of protrusion of the stabilizer 11 from the main body 1a in this stored state is H1.

[0039] On the other hand, the state of the stabilizer 11 shown in Figures 4 to 6 is the protruding state, in which the stabilizer 11 protrudes downward from the main body 1a via the shaft 11m. The amount of protrusion of the stabilizer 11 from the main body 1a in this protruding state is H2, and the amount of protrusion H2 in the protruding state is greater than the amount of protrusion H1 in the retracted state (H2 > H1).

[0040] In other words, the stabilizer 11 can be rotated via the shaft 11m to switch between a stored state in which it is folded and the amount of protrusion H1 is reduced, and a protruding state in which it protrudes from the main body 1a and the amount of protrusion H2 is increased.

[0041] Furthermore, the driving machine 1 has a restricting mechanism 35 that moves relative to the main body 1a, between a restricting position 28 that restricts the state of the stabilizer 11 from switching between the protruding state and the retracted state, and an allowable position 32 that allows the state of the stabilizer 11 to switch. In other words, the driving machine 1 has a restricting mechanism 35, and the restricting mechanism 35 moves relative to the main body 1a (magazine cover 37) between the restricting position 28 and the allowable position 32.

[0042] The regulated position 28 of the regulating mechanism 35 is the position where the shaft 11m protrudes from the magazine cover 37, as shown in Figures 9 to 12. On the other hand, the permissible position 32 of the regulating mechanism 35 is the position where the shaft 11m is recessed relative to the magazine cover 37, as shown in Figures 15 to 17.

[0043] Here, the configuration of the regulating mechanism 35 will be explained using Figure 8. First, the magazine cover 37 included in the main body 1a is arranged in the axial direction 11b with respect to the shaft portion 11a and has a substantially cylindrical first insertion portion 37a and a substantially cylindrical second insertion portion 37c through which the shaft portion 11a is inserted. On the other hand, the stabilizer 11 is arranged between the first insertion portion 37a and the second insertion portion 37c in the axial direction 11b of the shaft portion 11a and has a substantially cylindrical third insertion portion 11j through which the shaft portion 11a is inserted. The shaft portion 11a includes a shaft 11m and a sleeve 11c attached to the outer circumference of the shaft 11m.

[0044] The regulating mechanism 35 is a part that moves relative to the magazine cover 37 and includes a shaft 11m, a stabilizer 11 having a cylindrical third insertion part 11j through which the shaft 11m is inserted, and a sleeve 11c attached to the outer circumference of the shaft 11m. Of the components constituting the regulating mechanism 35, the component to which the sleeve 11c is attached to the shaft 11m is called the shaft portion 11a. Specifically, the shaft portion 11a is a rod-shaped component to which the sleeve 11c is attached to the shaft 11m and the shaft 11m and sleeve 11c are fixed by a roll pin 11d. The sleeve 11c has a cylindrical flange portion 11e, and the flange portion 11e is provided with a hole 11f that penetrates in the radial direction.

[0045] The regulating mechanism 35 is composed of a shaft portion 11a and a stabilizer 11 through which the shaft portion 11a is inserted into a third insertion portion 11j, and is a mechanism that moves relative to the magazine cover 37. The magazine cover 37 is provided with a cylindrical engaging portion, which consists of a first insertion portion 37a and a second insertion portion 37c, and the third insertion portion 11j of the stabilizer 11 is positioned between the first insertion portion 37a and the second insertion portion 37c.

[0046] Furthermore, regarding the shape of the shaft 11m, the shaft 11m is a rod-shaped member extending in the axial direction 11b, and includes a cylindrical portion 11r at the head end, a cylindrical portion 11r at the tip end, and a double-faced portion 11h positioned between them. A radial hole 11q is provided near the tip of the cylindrical portion 11r at the tip end of the shaft 11m. The double-faced portion 11h consists of two opposing planes and two opposing curved surfaces positioned on both sides of these two planes, and the size of its radial cross-section is larger than the radial cross-section of the cylindrical portion 11r. In other words, the double-faced portion 11h is a part in which the shapes of the two opposing faces are the same plane and the same curved surface, while the shapes of adjacent faces are different.

[0047] Next, the assembly of the shaft portion 11a and the stabilizer 11 to the magazine cover 37 will be described. First, the cylindrical third insertion portion 11j of the stabilizer 11 is placed between the cylindrical first insertion portion 37a and the cylindrical second insertion portion 37c of the magazine cover 37, and then the coil spring 11i is placed in the stepped through hole 37e of the first insertion portion 37a of the magazine cover 37. At this time, as shown in Figure 9, the position of the convex portion 37b of the first insertion portion 37a and the concave portion 11k of the third insertion portion 11j of the stabilizer 11 are aligned, and the convex portion 37b is fitted into the concave portion 11k.

[0048] In this state, the shaft 11m is passed through the through hole 37e of the first insertion part 37a, the through hole 11p of the third insertion part 11j, and the through hole 37f of the second insertion part 37c. Furthermore, the tip of the shaft 11m protruding from the second insertion part 37c is passed through the hole 11n of the sleeve 11c, and the sleeve 11c is inserted into the through hole 37f of the second insertion part 37c. Then, after inserting the tip of the shaft 11m up to the flange part 11e of the sleeve 11c, the roll pin 11d is inserted into the hole 11f of the flange part 11e and also into the hole 11q at the tip of the shaft 11m. This fixes the shaft 11m and the sleeve 11c. In other words, the shaft part 11a is formed. At that time, as shown in Figure 9, the position of the recess 37d of the third insertion portion 11j and the protrusion 11g of the flange portion 11e of the sleeve 11c are aligned and the protrusion 11g is fitted into the recess 37d.

[0049] As a result, as shown in Figures 9 and 10, the shaft 11m and the sleeve 11c are fixed together, and the stabilizer 11 is attached to the magazine cover 37. In other words, the regulating mechanism 35 shown in Figure 12 is formed by the integration of the shaft 11m, the sleeve 11c, and the stabilizer 11. This regulating mechanism 35 can be moved in the axial direction 11b of Figure 11 relative to the magazine cover 37. At that time, as shown in Figure 12, the regulating mechanism 35 including the stabilizer 11 can be moved along the axial direction 11b to the extent that the tip protrusion 11s of the third insertion portion 11j of the stabilizer 11 is attached to and detached (fitted / removed) from the tip recess 37g of the second insertion portion 37c of the magazine cover 37.

[0050] Furthermore, the two-sided width portion 11h of the shaft 11m is formed in a range that spans the first insertion portion 37a of the magazine cover 37 and the third insertion portion 11j of the stabilizer 11, but does not come into contact with the sleeve 11c. In addition, the shaft 11m (shaft portion 11a) is always biased forward in the axial direction 11b (see Figure 11) by the coil spring 11i.

[0051] Furthermore, the shaft portion 11a has a covered area P1 where the outer circumference of the shaft 11m is covered by the sleeve 11c, and an exposed area Q1 where the outer circumference of the shaft 11m is not covered by the sleeve 11c. In the shaft portion 11a, the exposed area Q1 is formed to span the first insertion portion 37a and the third insertion portion 11j, while the covered area P1 is formed to span the third insertion portion 11j and the second insertion portion 37c.

[0052] As described above, the shaft portion 11a has two points where it switches between the part that is inserted into the magazine cover 37 (main body portion 1a) and the part that is inserted into the stabilizer 11. At one of these points, the shaft 11m is exposed (exposed area Q1), and at the other point, the shaft 11m is covered by the sleeve 11c (covered area P1).

[0053] Furthermore, as shown in Figure 13, the shape of the through hole 37e that engages with the two-sided width portion 11h of the shaft 11m in the first insertion portion 37a of the magazine cover 37 is the same as the cross-sectional shape of the two-sided width portion 11h, so that the two-sided width portion 11h fits into the through hole 37e. Therefore, when the two-sided width portion 11h is fitted into the through hole 37e, the shaft 11m does not rotate relative to the magazine cover 37. In other words, when the two-sided width portion 11h of the shaft 11m is fitted into the through hole 37e of the magazine cover 37, the stabilizer 11 does not rotate relative to the magazine cover 37, and the stabilizer 11 is fixed relative to the magazine cover 37.

[0054] Furthermore, as shown in Figure 14, the shape of the through hole 11p in the third insertion portion 11j of the stabilizer 11 that engages with the two-sided width portion 11h of the shaft 11m is the same as the cross-sectional shape of the two-sided width portion 11h, so that the two-sided width portion 11h fits into the through hole 11p. Therefore, when the two-sided width portion 11h is fitted into the through hole 11p, the shaft 11m does not rotate relative to the stabilizer 11. In other words, even when the two-sided width portion 11h of the shaft 11m is fitted into the through hole 11p of the stabilizer 11, the stabilizer 11 does not rotate relative to the shaft 11m, and the stabilizer 11 remains fixed to the shaft 11m.

[0055] In other words, as shown in Figures 11 and 12, when the shaft 11m protrudes a predetermined amount from the magazine cover 37 along the axial direction 11b, the shaft 11m and the magazine cover 37 are fixed together, and the shaft 11m and the stabilizer 11 are also fixed together, as shown in Figures 13 and 14. Therefore, the stabilizer 11 is fixed to the magazine cover 37 (main body 1a), and the position of the shaft 11m in this state is the regulating position 28. That is, the regulating position 28 is the position in which the shaft 11m protrudes a predetermined amount from the magazine cover 37 along the axial direction 11b, and when the shaft 11m is positioned at the regulating position 28, the stabilizer 11 is fixed to the magazine cover 37 (main body 1a).

[0056] On the other hand, the states shown in Figures 15 to 17 represent the state in which the shaft 11m is moved to the rearward side along the axial direction 11b. In other words, the shaft portion 11a (shaft 11m) is moved to the rearward side along the axial direction 11b so that the shaft portion 11a is retracted relative to the magazine cover 37, and the position of the shaft 11m in this state is the allowable position 32. That is, the allowable position 32 is the position in which the shaft 11m is retracted relative to the magazine cover 37 more than the restricted position 28 along the axial direction 11b.

[0057] Thus, the regulating mechanism 35, including the shaft portion 11a (shaft 11m), moves between the regulated position 28 and the permitted position 32 by moving in the axial direction 11b of the shaft portion 11a. Note that the shaft portion 11a and the stabilizer 11 are integrated via the third insertion portion 11j. In other words, the stabilizer 11 moves integrally with the shaft portion 11a in the axial direction 11b.

[0058] Here, as shown in Figure 17, when the shaft 11m (regulating mechanism 35) is positioned in the allowable position 32, as shown in Figure 19, the portion of the shaft 11m that is positioned in the through hole 37e of the first insertion portion 37a of the magazine cover 37 is the cylindrical portion 11r. The diameter of the cylindrical portion 11r of the shaft 11m is smaller than the diameter of the two-sided width portion 11h. Therefore, a gap is formed between the through hole 37e and the cylindrical portion 11r, and the shaft 11m becomes rotatable relative to the first insertion portion 37a. In other words, when the shaft portion 11a (regulating mechanism 35) is positioned in the allowable position 32, the stabilizer 11, which is integrated with the shaft portion 11a, is rotatable relative to the first insertion portion 37a of the magazine cover 37.

[0059] Furthermore, when the shaft portion 11a is positioned at the allowable position 32, as shown in Figure 18, the shaft 11m has its two-sided width portion 11h positioned in the through hole 11p of the third insertion portion 11j of the stabilizer 11. Therefore, the shaft 11m does not rotate relative to the stabilizer 11. In other words, the shaft portion 11a and the stabilizer 11 are integrated.

[0060] As a result, when the shaft 11m (regulating mechanism 35) is positioned at the permissible position 32, the stabilizer 11, which is integrated with the shaft portion 11a, is rotatable relative to the magazine cover 37 (main body portion 1a).

[0061] As shown in Figure 9, when the shaft 11m (regulating mechanism 35) is positioned at the regulating position 28, the protrusion 37b on the outer circumference of the first insertion portion 37a of the magazine cover 37 engages with the recess 11k on the outer circumference of the third insertion portion 11j of the stabilizer 11. This makes the stabilizer 11 even more difficult to rotate relative to the magazine cover 37 (main body portion 1a). Furthermore, the protrusion 11g on the flange portion 11e of the sleeve 11c attached to the shaft 11m, which is integrated with the stabilizer 11, engages with the recess 37d on the outer circumference of the second insertion portion 37c of the magazine cover 37. As a result, the shaft portion 11a and the magazine cover 37, i.e., the stabilizer 11, become even more difficult to rotate relative to the magazine cover 37 (main body portion 1a).

[0062] As described above, when the shaft 11m (regulating mechanism 35) is positioned at the regulating position 28, as shown in Figure 11, the rotation of the stabilizer 11 relative to the magazine cover 37 is made difficult via the shaft portion 11a, and the fitting of the outer circumference further makes it difficult for the stabilizer 11 to rotate relative to the magazine cover 37. In other words, when the shaft 11m is positioned at the regulating position 28, the stabilizer 11 is fixed so as not to rotate relative to the magazine cover 37 by both the shaft portion 11a and the outer circumference.

[0063] On the other hand, as shown in Figure 15, when the shaft 11m (regulating mechanism 35) is in the allowable position 32, the engagement between the protrusion 37b on the outer circumference of the first insertion portion 37a of the magazine cover 37 and the recess 11k on the outer circumference of the third insertion portion 11j of the stabilizer 11 is disengaged. Also, the engagement between the protrusion 11g on the flange portion 11e of the sleeve 11c attached to the shaft 11m, which is integrated with the stabilizer 11, and the recess 37d on the outer circumference of the second insertion portion 37c of the magazine cover 37 is disengaged. Therefore, when the shaft 11m is in the allowable position 32, the stabilizer 11, which is integrated with the shaft portion 11a, is rotatable relative to the magazine cover 37 (main body portion 1a), and the engagement of the outer circumference is also disengaged, so the stabilizer 11 becomes more rotatable relative to the magazine cover 37.

[0064] In other words, the stabilizer 11 restricts the switching of the stabilizer 11's state by fitting into the magazine cover 37 (main body 1a) when the shaft portion 11a (regulating mechanism 35) is in the regulating position 28 (fixing the stabilizer 11). Furthermore, the stabilizer 11 has a leg fitting portion U1 (see Figures 9 and 15) that allows the state of the stabilizer 11 to switch without fitting into the magazine cover 37 (main body 1a) when the shaft portion 11a is in the allowable position 32 (making the stabilizer 11 rotatable).

[0065] Furthermore, the shaft portion 11a restricts the switching of the stabilizer 11's state by fitting into the magazine cover 37 (main body portion 1a) when the shaft portion 11a (regulating mechanism 35) is in the regulating position 28 (fixing the stabilizer 11). In addition, the shaft portion 11a has shaft fitting portions V1 (see Figures 9 and 15) and shaft fitting portions V2 (see Figures 13 and 14) that allow the state of the stabilizer 11 to switch without fitting into the magazine cover 37 (main body portion 1a) when the shaft portion 11a is in the allowable position 32.

[0066] Next, the folded state of the stabilizer 11 will be described. Figures 20 to 24 show the stabilizer 11 in the folded state. When folding the stabilizer 11, as shown in Figure 17, the shaft 11m is positioned at the allowable position 32, making the stabilizer 11 rotatable relative to the magazine cover 37 (main body 1a). In this state, as shown in Figure 21, the stabilizer 11 is folded to the right of the second blade guide 39, that is, to the right of the magazine section 12 (see Figure 20). After folding the stabilizer 11, as shown in Figure 22, the shaft 11m is positioned at the restricting position 28, fixing the stabilizer 11 so that it does not rotate relative to the magazine cover 37 (main body 1a). In other words, as shown in Figure 23, the first insertion portion 37a of the magazine cover 37 and the shaft 11m engage with the through hole 37e of the first insertion portion 37a at the two-sided width portion 11h of the shaft 11m, so the shaft 11m does not rotate relative to the magazine cover 37. In other words, the stabilizer 11 is fixed to the magazine cover 37 (main body portion 1a). Furthermore, as shown in Figure 24, the third insertion portion 11j of the stabilizer 11 and the shaft 11m engage with the through hole 11p of the third insertion portion 11j at the two-sided width portion 11h of the shaft 11m, so the shaft 11m does not rotate relative to the stabilizer 11. In other words, the stabilizer 11 is fixed to the magazine cover 37 (main body portion 1a). As described above, the stabilizer 11 is fixed so as not to rotate even when folded.

[0067] As shown in Figure 7, the main body 1a of the nail driving machine 1 has a magazine section 12 that extends in the front-rear direction (second direction) Y1 to supply nails 3 to the striking mechanism 5. The magazine section 12 extends along the extension direction M1, and as shown in Figure 20, the shaft section 11a extends parallel to the magazine section 12. The stabilizer 11 is attached to the magazine section 12 via the shaft section 11a, and as shown in Figures 23 and 24, the shaft section 11a is positioned to the right of the center of the magazine section 12 in the left-right direction (third direction) Z1. Furthermore, the magazine section 12 has a case section 12a that houses a plurality of nails 3 inside, and a feeder section 33 (see Figure 5) that biases the nails 3 inside the case section 12a toward the striking mechanism 5. Furthermore, the feeder section 33 has an operating section 33a (see Figure 21) that is exposed to the left (one side) of the left-right direction Z1 from the case section 12a, and the shaft section 11a is positioned offset to the right (the other side) of the left-right direction Z1 relative to the center of the magazine section 12 in the left-right direction Z1.

[0068] Therefore, when folding the stabilizer 11, it is preferable to fold it to the right side of the magazine section 12, where there are no components such as the feeder section 33 including the operating section 33a. More specifically, as shown in Figures 1 to 3, since the left side of the magazine section 12 is provided with protruding components such as the feeder section 33 including the operating section 33a, it is preferable to fold and store the stabilizer 11 to the right side of the magazine section 12, where there are no protruding components on the side of the magazine section 12. By folding the stabilizer 11 to the right side of the magazine section 12, the stabilizer 11, in its stored state, is located within the arrangement range of the main body section 1a in the left-right direction Z1, as shown in Figure 3. In other words, by folding the stabilizer 11 to the right side of the magazine section 12, the stabilizer 11 can be stored so that it does not protrude from the main body section 1a.

[0069] According to the driving machine 1 of this embodiment 1, the stabilizer 11 can be folded and stored when it is needed. Specifically, the stabilizer 11 is folded via the shaft portion 11a attached to the magazine cover 37. As a result, when performing work that does not require the stabilizer 11 with the driving machine 1, the stabilizer 11 can be stored with a simple folding operation, improving the convenience of the driving machine 1 (working machine).

[0070] Furthermore, in the driving machine 1, the regulating mechanism 35, including the shaft portion 11a, can be moved to the regulating position 28, thereby fixing (locking) the stabilizer 11 so that it does not rotate when in use or when not in use. For example, if the stabilizer 11 moves when in use, it becomes inconvenient to use, but in the driving machine 1 of this embodiment 1, the shaft portion 11a (regulating mechanism 35) can be fixed (locked) so that the stabilizer 11 does not move by positioning it to the regulating position 28, thereby improving the usability of the driving machine 1.

[0071] Furthermore, when an external load is applied to the stabilizer 11, stresses that cause shearing stress are applied to the shaft 11m. By attaching the sleeve 11c to the outer circumference of the shaft 11m, a portion of the shaft 11m is covered by the sleeve 11c, thereby reducing the stress applied to the shaft 11m. In other words, the stress applied from the stabilizer 11 is reduced by the sleeve 11c, thereby increasing the durability of the shaft 11m.

[0072] Furthermore, the direction in which the shaft 11m extends is the same as the direction in which the magazine section 12 extends (extension direction M1). As a result, when the stabilizer 11 is folded and stored, the stabilizer 11 is stored on the side of the magazine section 12. At this time, the plate-shaped stabilizer 11 is stored on the side of the plate-shaped magazine section 12. In other words, since the plate-shaped stabilizer 11 is stored in the thickness direction of the plate-shaped magazine section 12 without protruding downwards or backwards, the stabilizer 11 can be stored within the range of the left-right direction Z1 of the main body 1a of the driving machine 1. As a result, the stabilizer 11 can be stored compactly even when considering the driving machine as a whole.

[0073] Furthermore, since the shaft portion 11a, which is integrated with the stabilizer 11, is located on the right side of the magazine portion 12, it is preferable to fold the stabilizer 11 to the right side of the magazine portion 12. Structurally, since the feeder portion 33 and its operating portion 33a are provided on the left side of the magazine portion 12, it is also preferable to fold the stabilizer 11 to the right side of the magazine portion 12. This prevents interference between the feeder portion 33 and the stabilizer 11 when the feeder portion 33 is pulled backward.

[0074] Furthermore, by folding the stabilizer 11 to the right side of the magazine section 12, the stabilizer 11 can be hidden when viewed from the left side of the driving machine 1, thereby enhancing the aesthetic appearance of the driving machine body. In other words, the design of the driving machine body can be improved.

[0075] Furthermore, in the driving machine 1, the motor 13 is positioned offset to the right with respect to the driving axis within the driving machine body. In addition, the pin wheel 25 and other components are also offset to the right. The stabilizer 11 is housed below the motor 13, and by aligning it with the originally bulging part of the main body 1a, the stabilizer 11 is housed in a way that minimizes obstruction and allows for compact storage. Moreover, since the shaft portion 11a of the stabilizer 11 is positioned towards the right side of the magazine portion 12, the stabilizer 11 can be smoothly stored to the right of the magazine portion 12 by simply folding the stabilizer 11 to the right, with the shaft portion 11a positioned towards the right as the center.

[0076] (Embodiment 2) The work machine in this second embodiment is a driving machine 60 similar to the driving machine 1 in the first embodiment, and is suitable for driving fasteners such as nails into a concrete wall or other mating material. Furthermore, the structure of the driving machine 60 in this second embodiment is substantially the same as the structure of the driving machine 1 in the first embodiment, and the driving machine 60 is also an air-compression type driving machine. Therefore, redundant explanations of the structure of the driving machine 60 that are the same as those of the driving machine 1 in the first embodiment will be omitted.

[0077] In this second embodiment, we will again use nail 3 as an example of a fastener for explanation.

[0078] The nail driver 60 shown in Figure 25 includes an injection section 34 that supports the nails 3 (see Figure 7), a striking mechanism 5 that strikes the nails 3 supported by the injection section 34, a magazine section 12 that supplies the nails 3 to the injection section 34, and a housing 10 that covers the injection section 34. The magazine section 12 extends along the extending direction M1. A magazine cover 37 is provided at the rear of the magazine section 12, and a stabilizer 48 is attached to the magazine cover 37. The stabilizer 48 is designed to be foldable and housed in the magazine section 12.

[0079] The injection unit 34 is covered by a dust cover 7, which is an element of the housing 10, as shown in Figures 25 and 26. The injection unit 34 is provided with a first blade guide 30 and a second blade guide (end member) 39 that form an injection path 31 in which the nails 3 are placed. Therefore, the first blade guide 30 and the second blade guide 39 are covered by the dust cover 7. The dust cover 7 has an opening 10a (mesh part in Figure 29) for attaching and detaching the magazine unit 12 to the injection unit 34.

[0080] Furthermore, as shown in Figures 27 and 28, the magazine section 12 is attached to the injection section 34 by rotating relative to the injection section 34 around a rotation axis 47 that extends along the left-right direction (orthogonal direction) Z1, which is perpendicular to the extending direction M1 in Figure 25. In other words, the magazine section 12 can be attached to and detached from the injection section 34 by rotating relative to the injection section 34 around the rotation axis 47 that extends along the left-right direction Z1.

[0081] In detail, the magazine section 12 has a second blade guide 39 provided at its tip, with a projection (mounting projection) 42c that protrudes along the extending direction M1 and a projection direction N1 (see Figure 35) perpendicular to the left-right direction (orthogonal direction) Z1. On the other hand, the injection section 34 has a first blade guide 30 positioned in the injection section 34, into which the projection 42c (rotation axis 47) is inserted, and a mounting recess 34a is provided. Therefore, the magazine section 12 is attached to the injection section 34 by rotating the projection 42c (rotation axis 47) around the pivot point with the projection 42c inserted into the mounting recess 34a of the first blade guide 30.

[0082] Specifically, when removing the magazine section 12 from the injection section 34, the lever 12d shown in Figure 28 is operated, causing the latch 12c shown in Figure 27 to disengage from the hook 12b, thereby detaching the magazine section 12 from the motor case 4. At that time, the magazine section 12 is removed from the injection section 34 by rotating it relative to the injection section 34, around the projection 42c (rotation axis 47) at the tip of the magazine section 12, which is fitted into the mounting recess 34a of the first blade guide 30 of the injection section 34.

[0083] On the other hand, when attaching the magazine section 12 to the injection section 34, first, the projection 42c (rotation axis 47) at the tip of the magazine section 12 is fitted into the mounting recess 34a of the first blade guide 30 of the injection section 34. Next, while rotating the magazine section 12 relative to the injection section 34 around the projection 42c (rotation axis 47) of the magazine section 12, the magazine section 12 is attached to the motor case 4 and then to the injection section 34 so that the latch 12c engages with the hook 12b.

[0084] As described above, in the injection machine 60, the magazine section 12 can be attached and detached without tools by rotating the magazine section 12 relative to the injection section 34. However, because the magazine section 12 is attached and detached from the injection section 34 while rotating it relative to the injection section 34, the opening 10a of the dust cover 7 needs to be made larger than the widthwise cross-sectional size of the magazine section 12 to allow for some leeway.

[0085] As a result, a space is formed around the magazine section 12, and dust from the concrete wall can enter this space and enter the striking mechanism 5, potentially shortening the lifespan of the work machine and impairing its usability.

[0086] Therefore, in the nail driving machine 60 of this second embodiment, the magazine section 12 shown in Figure 29 has a magazine base (magazine body) 42 that supports a plurality of nails 3, and a magazine shroud 42a (see Figure 30) that closes the space between the magazine base 42 and the edge 10b of the opening 10a. The magazine base 42 is a thin, plate-shaped, elongated member, and as shown in Figure 30, a passage for the nails 3 is formed inside it. The dust cover 7 (housing 10) has an opening 10a that allows the magazine section 12 to pass through in the extending direction M1 of the magazine section 12. The magazine shroud 42a is a lid that closes the space (opening 10a of the dust cover 7) formed around the magazine base 42. The magazine shroud 42a is a plate-shaped member, and is an uneven member with multiple walls inverted on its front and back surfaces.

[0087] The magazine shroud 42a has openings 42b and 42i, as shown in Figures 31 to 33. Opening 42b is a hole into which the magazine base 42 shown in Figure 34 is fitted. Opening 42i is a hole into which the sensor part (movable member described later) 42d is positioned.

[0088] Furthermore, the magazine shroud 42a is provided on the magazine base 42 so as to be sandwiched between the second blade guide 39, which is attached to the tip of the magazine base 42, and the magazine base 42.

[0089] In detail, the magazine base 42 has a contact portion 42h that abuts against the magazine shroud 42a. The magazine shroud 42a is positioned relative to the magazine base 42 by being sandwiched between the second blade guide (end member) 39 and the contact portion 42h in the extending direction M1 of the magazine portion 12.

[0090] As shown in Figures 35 and 36, the magazine section 12 has a second blade guide 39 attached to the front (one side) end of the magazine base 42 in the extending direction M1 and defining an ejection path 31 between it and the ejection section 34, and a bolt 46 that fixes the second blade guide 39 to the magazine base 42. As shown in Figures 37 and 38, the second blade guide 39 is attached to the end of the magazine base 42 opposite to the end to which the stabilizer 48 is attached. As shown in Figures 35, 43 and 44, the head 46a of the bolt 46 protrudes from the surface of the magazine base 42. The magazine shroud 42a is positioned rearward (on the other side) in the extending direction M1 from the head 46a of the bolt 46. In other words, the head 46a of the bolt 46 is positioned between the second blade guide 39 and the magazine shroud 42a. In other words, the second blade guide 39, bolt 46, and magazine shroud 42a are arranged in order from the end opposite to the end of the magazine base 42 to which the stabilizer 48 is attached (the front end).

[0091] Here, the assembly of the magazine shroud 42a to the magazine base 42 will be described. First, the magazine shroud 42a is inserted from the front end of the magazine base 42 through the opening 42b, and the magazine shroud 42a is positioned so that it contacts the contact portion 42h of the magazine base 42. In this state, the second blade guide 39 is fitted onto the front end of the magazine base 42, and then the bolt 46 is fastened via the washer 49b to fix the second blade guide 39 and the magazine base 42. At this time, the magazine shroud 42a is positioned and fixed by being sandwiched between the second blade guide 39 and the contact portion 42h of the magazine base 42.

[0092] Furthermore, as shown in Figures 39 to 42, a feeder section 33 and a dust cover 45 are provided on the side of the magazine section 12 opposite to the side where the head 46a of the bolt 46 is located.

[0093] Figure 45 shows the components assembled to the magazine section 12. The magazine section 12 has a second blade guide 39 and a magazine shroud 42a attached to its front end. Furthermore, it has an assembly component that is assembled to the magazine base 42 and detaches from the magazine base 42 by moving relative to the magazine base 42 in the forward direction M1 (one side). The magazine shroud 42a is provided on the forward side in the extending direction M1, facing the aforementioned assembly component. The second blade guide 39 and the magazine base 42 are fixed together by bolts 46 via washers 49a and 49b.

[0094] Here, the magazine base 42 has a slit portion 42g extending from the front (one side) end to the rear (the other side) in the extending direction M1. The assembly part is a dust cover 45 that covers the surface of the magazine base 42 by being inserted into the slit portion 42g from the front to the rear in the extending direction M1 (see Figure 46).

[0095] Furthermore, the assembly part has a ribbon spring (spring) 41 with a recessed hook portion 41a on the front side in the extending direction M1. The ribbon spring 41 is wound around a roller 41b and, as shown in Figure 47, is fixed to the magazine base 42 by the front end in the extending direction M1 on the magazine base 42 engaging with the hook portion 41a.

[0096] The roller 41b, which winds up the ribbon spring 41, is housed in the feeder section 33. The hook portion 41a at the tip of the ribbon spring 41 is sandwiched and fixed between the front end of the magazine base 42 and the magazine shroud 42a. The feeder section 33, which houses the roller 41b, is constantly biased forward (towards the second blade guide 39) by the ribbon spring 41, pushing the nail 3 shown in Figure 7 toward the ejection passage 31.

[0097] As shown in Figures 48 and 49, the magazine section 12 is positioned to penetrate the opening 42i (see Figure 31) of the magazine shroud 42a in the extending direction M1, and has a rod-shaped sensor section (movable member) 42d whose other end 42f moves in the extending direction M1 as one end 42e moves in the extending direction M1. As shown in Figure 49, the sensor section 42d is always biased to the rear in the extending direction M1 by a coil-shaped spring 42j.

[0098] Furthermore, as shown in Figure 48, the magazine section 12 has a feeder section (moving member) 33 that moves in accordance with the change in the remaining amount of nails 3 supported by the magazine base 42, and one end 42e of the sensor section 42d moves by coming into contact with the feeder section 33. The injection section 34 has a Hall IC 40 (see Figure 30), which is a detection unit that detects the movement of the other end 42f of the sensor section 42d.

[0099] As a result, when the amount of nails 3 remaining in the magazine section 12 falls below a predetermined amount, the feeder section 33 comes into contact with the sensor section 42d, and the sensor section 42d protrudes from the second blade guide 39. The hole IC 40 provided in the injection section 34 detects this sensor section 42d protruding from the second blade guide 39, and the nail driving operation of the nail driving machine 60 is stopped.

[0100] Thus, the driving machine 60 is provided with a dry-firing prevention mechanism that includes a ribbon spring 41 having a hook portion 41a, a feeder portion 33 biased by the ribbon spring 41, and a rod-shaped sensor portion 42d that is in contact with the feeder portion 33 and is movable to the outside of the magazine shroud 42a.

[0101] In other words, the driving machine 60 is equipped with a dry-firing prevention mechanism in the magazine section 12, and many of the parts on the magazine section 12 side enter the dust cover 7. For example, the rod-shaped sensor section 42d. The rod-shaped sensor section 42d penetrates the magazine shroud 42a and also protrudes from the second blade guide 39. Therefore, the opening 10a of the dust cover 7 for attaching and detaching the magazine section 12 also needs to be made large.

[0102] In the driving machine 60 of this second embodiment, a magazine shroud 42a is provided in the dust cover 7 that covers the injection unit 34, which closes the space between the magazine base 42 and the edge 10b of the opening 10a. This prevents dust from entering the dust cover 7. As a result, dust can enter the striking mechanism 5 inside the dust cover 7 and adversely affect the operation of the striking mechanism 5, thus preventing a shortened lifespan of the driving machine 60. In other words, the lifespan of the driving machine 60 can be extended and the convenience of the driving machine 60 can be improved.

[0103] Furthermore, since the bolt 46 that secures the magazine base 42 and the second blade guide 39 is positioned in front of the magazine shroud 42a (towards the second blade guide 39), the bolt 46 can be hidden by the magazine shroud 42a. As a result, the appearance of the driving machine 60 can be improved.

[0104] (Embodiment 3) The work machine in this third embodiment is a drive machine 70 similar to the drive machine 1 in the first embodiment, and is suitable for driving fasteners such as nails into a concrete wall or other mating material. Furthermore, the structure of the drive machine 70 in this third embodiment is substantially the same as the structure of the drive machine 1 in the first embodiment, and the drive machine 70 is also an air-compression type drive machine. Therefore, redundant explanations of the structure of the drive machine 70 that are the same as those of the drive machine 1 in the first embodiment will be omitted.

[0105] In this third embodiment, we will again use nail 3 as an example of a fastener for explanation.

[0106] The nail driver 70 shown in Figure 50 includes an ejection section 34 that supports the nails 3 shown in Figure 7, a striking mechanism 5 that strikes the nails 3 supported by the ejection section 34, a magazine section 12 that supplies the nails 3 to the ejection section 34, and a housing 10 that covers the ejection section 34. The magazine section 12 extends along the extending direction M1. A magazine cover 37 is provided at the rear of the magazine section 12, and a stabilizer 50 is attached to the magazine cover 37. The stabilizer 50 is structured to be housed in the main body section 1a by folding it towards the magazine section 12 via a shaft 11m.

[0107] The magazine cover 37 to which the stabilizer 50 is assembled is provided with a hook 37h extending downward, as shown in Figures 51 to 53. The hook 37h has a claw portion 37i that protrudes toward the rear, and a first side wall 37j and a second side wall 37k located to the left and right of the claw portion 37i. On the other hand, the stabilizer 50 has a fitting groove 50h into which the hook 37h fits, and the stabilizer 50 is fixed to the magazine cover 37 so as not to rotate when the claw portion 37i of the hook 37h fits into the fitting groove 50h of the stabilizer 50.

[0108] The hook 37h is provided to connect the claw portion 37i and the magazine cover 37, and the first side wall 37j and the second side wall 37k are provided on the left and right sides, forming a box shape with the bottom and rear open. This box shape increases the strength of the hook 37h and ensures its durability. This makes it possible to suppress damage to the hook 37h when the stabilizer 50 is subjected to impact.

[0109] Furthermore, as shown in Figure 51, a damper 50j is attached to the stabilizer 50 so as to be interposed between the stabilizer 50 and the magazine cover 37. The damper 50j is made of rubber and is flat in shape, and is sandwiched between the stabilizer 50 and the magazine cover 37.

[0110] This reduces the reaction force that the stabilizer 50 receives from the magazine cover 37 when an impact is applied to the stabilizer 50. As a result, damage to the stabilizer 11 can be suppressed.

[0111] The stabilizer 50 is formed in an annular shape. Specifically, the annular portion 50g of the stabilizer 50 has a first bend 50a, a second bend 50b, a third bend 50c, a fourth bend 50d, a fifth bend 50e, and a sixth bend 50f. The bending angle of each of these bends is 90 degrees or more.

[0112] In this way, since all of the multiple bent sections of the stabilizer 50 have a bending angle of 90 degrees or more, the stress can be distributed when an impact is applied to the stabilizer 50, and damage to the stabilizer 50 can be suppressed.

[0113] Furthermore, the stabilizer 50 has a constricted portion 50i adjacent to the lower side of the fitting groove 50h. In the constricted portion 50i, the radial thickness of the annular stabilizer 50 is the first distance L1, which is shorter than the second distance L2, which is the radial thickness of other parts of the annular portion 50g (L1 <L2)。

[0114] In the stabilizer 50, the constricted portion 50i is provided on the upper part of the annular portion 50g and adjacent to the fitting groove 50h. This allows the constricted portion 50i to deform and distribute stress when an impact is applied to the stabilizer 50. This helps to prevent damage to the stabilizer 11.

[0115] The present invention is not limited to the above embodiments 1, 2, and 3, and can be modified in various ways without departing from its essence. For example, in embodiment 1, the case in which the magazine cover 37 and stabilizer 11 are assembled is described in which the magazine cover 37 is provided with a first insertion part and a second insertion part, and a third insertion part is provided on the stabilizer 11, which is positioned between the first and second insertion parts. However, the reverse relationship is also possible. That is, the stabilizer 11 may be provided with a first insertion part and a second insertion part, and a third insertion part may be provided on the magazine cover 37, which is positioned between the first and second insertion parts. [Explanation of symbols]

[0116] 1... Nail driving machine (working machine), 1a... Main body, 2... Cylinder case, 3... Nail (fastener), 4... Motor case, 5... Impact mechanism, 6... Handle, 7... Dust cover, 8... Connecting part, 10... Housing, 10a... Opening, 10b... Edge, 11... Stabilizer (leg), 11a... Shaft, 11b... Axial direction, 11c... Sleeve, 11d... Roll pin, 11e... Flange, 11f... Hole, 11g... Protrusion, 11h... Width across flats, 11i... Coil spring, 11j... Third insertion part, 11k... Recess, 11m... Shaft, 11 n...hole, 11p...through hole, 11q...hole, 11r...cylindrical part, 11s...protruding tip, 12...magazine part, 12a...case part, 12b...hook part, 12c...latch, 12d...lever, 13...motor, 14...drive shaft, 15...reduction mechanism, 16...battery, 17...controller, 18...wiring, 20...cylinder, 21...piston, 22...piston upper chamber, 23...driver blade, 24...damper, 25...pinwheel, 25a...pin, 26...pressure accumulation chamber (biasing part), 26a...chamber, 27...nose, 28...regulator 29…Push lever, 30…First blade guide, 31…Ejection path, 32…Allowable position, 33…Feeder section (moving member), 33a…Operating section, 34…Ejection section, 34a…Mounting recess, 35…Regulating mechanism, 37…Magazine cover (main body), 37a…First insertion section, 37b…Protrusion, 37c…Second insertion section, 37d…Recess, 37e, 37f…Through hole, 37g…Tip recess, 37h…Hook, 37i…Claw section, 37j…First side wall, 37k…Second side wall, 39…Second blade guide (end member), 40…Hole I C (detection unit), 41... Ribbon spring (assembly part, spring), 41a... Hook part, 41b... Roller, 42... Magazine base (magazine body), 42a... Magazine shroud (lid), 42b... Opening, 42c... Projection (mounting protrusion), 42d... Sensor part (movable member), 42e... One end, 42f... Other end, 42g... Slit part, 42h... Contact part, 42i... Opening, 42j... Spring, 45... Dust cover (assembly part), 46... Bolt, 46a... Head, 47... Rotating shaft, 48... Stabilizer, 49a,49b...Washer, 50...Stabilizer (leg), 50a...First bend, 50b...Second bend, 50c...Third bend, 50d...Fourth bend, 50e...Fifth bend, 50f...Sixth bend, 50g...Annular section, 50h...Matching groove, 50i...Neck section, 50j...Damper, 60...Driving machine (working machine), 70...Driving machine (working machine), H1, H2...Protrusion amount, M1...Extension direction, N1...Protrusion direction, P1...Covered area, Q1...Exposed area, U1...Leg fitting section, V1, V2...Shaft fitting section, X1...Up / down direction (first direction), Y1...Front / back direction (second direction), Z1...Left / right direction (third direction, orthogonal direction),

Claims

1. The injection part that supports the fastener, A striking mechanism for striking the stopper supported by the injection section, A magazine section that supplies the stopper to the injection section, It has a housing that covers the injection part, The housing has an opening that penetrates the magazine portion in the extending direction of the magazine portion, The work machine comprises a magazine section having a magazine body that supports a plurality of fasteners, and a cover that closes the space between the magazine body and the edge of the opening.

2. The work machine according to claim 1, wherein the magazine section is attached to the injection section by rotating relative to the injection section with respect to a rotation axis that extends in a direction perpendicular to the extending direction.

3. The magazine portion has mounting protrusions that protrude along the extending direction and the protruding direction perpendicular to the orthogonal direction, The injection section has a mounting recess into which the mounting projection is inserted, The work machine according to claim 2, wherein the magazine portion is attached to the injection portion by rotating the mounting projection as a pivot point while the mounting projection is inserted into the mounting recess.

4. The work machine according to claim 1, wherein the magazine section is arranged to penetrate the lid in the extending direction and has a movable member whose other end moves as one end moves in the extending direction.

5. The magazine section has a movable member that moves in accordance with the change in the remaining amount of the fastener supported by the magazine body. The one end of the movable member moves by contacting the moving member. The work machine according to claim 4, wherein the injection unit has a detection unit for detecting the movement of the other end of the movable member.

6. It has an assembly part that is attached to the magazine body and detaches from the magazine body by moving relative to the magazine body to one side in the extending direction, The work machine according to claim 1, wherein the cover is provided on one side in the extending direction, facing the assembly part.

7. The magazine body has a slit portion extending from one end in the extending direction to the other side, The assembly part is a dust cover that covers the surface of the magazine body by being inserted into the slit portion from one side to the other in the extending direction, according to claim 6.

8. The aforementioned assembly part has a spring with a recessed hook portion on one side in the extending direction, The work machine according to claim 6, wherein the spring is fixed to the magazine body by one end in the extending direction of the magazine body engaging with the hook portion.

9. The aforementioned magazine section is An end member attached to one end of the magazine body in the extending direction, which defines an injection path between itself and the injection section, It has a bolt that secures the terminal member and the magazine body, The head of the bolt protrudes from the surface of the magazine body. The work machine according to claim 1, wherein the cover is positioned on the other side in the extending direction of the bolt than the head of the bolt.

10. The magazine body has a contact portion that contacts the lid, The work machine according to claim 9, wherein the lid is positioned relative to the magazine body by being sandwiched between the end member and the contact portion in the extending direction.

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